Panasonic 26PEK2U6 26PEK2U6 Service Manual
Panasonic 26PEK2U6 Manual
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- Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 1
Order No. SM830203-11CE TECHNICAL DATA & SERVICE MANUAL Indoor Unit Outdoor Unit Model No. Shows S-26PU1U6 Outdoor Units Nominal Capacity Type Outdoor Units 26 36 42 U Single U-26PE1U6 U-26PS1U6 U-36PE1U6 U-36PS1U6 U-42PE1U6 U-42PS1U6 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 2
service the system so it operates safely and efficiently. For safe installation and trouble-free operation, you must: Carefully read this instruction problem, contact our sales/service outlet or your certified dealer for additional instructions rigid and strong enough to support or hold the unit, and - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 3
of this appliance, do not repair by yourself. Contact to the sales dealer or service dealer for a repair. WARNING • Do not sit or step on the unit, you : To assure continued compliance, follow the attached installation instructions. Any changes or modifications not expressly approved by the - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 4
Check of Density Limit The room in which the air conditioner is to be installed requires a design that in the event of refrigerant gas leaking out, its density will not exceed a set limit. The refrigerant (R410A), which is used in the air conditioner, is safe, without the toxicity or combustibility - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 5
3. Different tools required 3-1. Tool specifications have been changed due to the characteristics of R410A. Some tools for R22- and R407C-type refrigerant systems cannot be used. Item Manifold gauge Charge hose Vacuum pump Leak detector Flaring oil New tool? R407C tools compatible with R410A? - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 6
Chart 1-89 1-12. ELECTRICAL WIRING 1-97 1-13. Installation Instructions 1-100 Section 2: PROCESSES AND FUNCTIONS 2-1 2-1. Room Temperature DATA 3-1 3-1. Indoor Units...3-2 3-2. Outdoor Units...3-14 Section 4: SERVICE PROCEDURES 4-1 4-1. Meaning of Alarm Messages 4-2 4-2. Symptoms and Parts - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 7
Section 6: TEST RUN...6-1 6-1. Preparing for Test Run 6-2 6-2. Caution...6-3 6-3. Test Run Procedure 6-3 6-4. Items to Check Before the Test Run 6-4 6-5. Test Run Using the Remote Controller 6-4 6-6. Precautions...6-5 6-7. Table of Self-Diagnostic Functions and Corrections (Type F2, U2, T2, K2, - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 8
- MEMO - vii - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 9
1-82 1-10. External Static Pressure Setting 1-83 1-11. Air Throw Distance Chart 1-89 1-12. ELECTRICAL WIRING 1-97 1 1-13. Installation Instructions 1-100 Outdoor Unit 1. Tubing Size ...1-100 2. Check of density limit ...1-101 3. SELECTING THE INSTALLATION SITE 1-102 4. HOW TO INSTALL - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 10
1-1. Unit Specifications 1. Specifications Concealed Duct (Type F2) INDOOR MODEL S-26PF2U6 PANEL MODEL - - OUTDOOR MODEL U-26PE1U6 Branch pipe MODEL - PERFORMANCE TEST CONDITION ARI Standard 210/240 POWER SUPPLY PH, Hz V 1PH, 60Hz 1PH, 60Hz 208 230 - 208 230 - Min - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 11
1-1. Unit Specifications 1. Specifications Concealed Duct (Type F2) INDOOR MODEL S-36PF2U6 PANEL MODEL - - OUTDOOR MODEL U-36PE1U6 Branch pipe MODEL - PERFORMANCE TEST CONDITION ARI Standard 210/240 POWER SUPPLY PH, Hz V 1PH, 60Hz 208 230 - 1PH, 60Hz 208 230 - Min Max - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 12
1-1. Unit Specifications 1. Specifications 4-Way Cassette (Type U1) MODEL No. Indoor Unit S-26PU1U6 Outdoor Unit U-26PE1U6 POWER SOURCE 230 - 208V / 1 Phase / 60Hz PERFORMANCE Cooling Heating Capacity * [minimum~muximum] BTU / h 24,800 [9,500~24,800] 29,800 [8,000~29,800] (17˚F)** - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 13
1-1. Unit Specifications 1. Specifications 4-Way Cassette (Type U1) MODEL No. Indoor Unit S-36PU1U6 Outdoor Unit U-36PE1U6 POWER SOURCE 230 - 208V / 1 Phase / 60Hz PERFORMANCE Cooling Heating Capacity * [minimum~muximum] BTU / h 32,600 [9,500~32,600] 37,600 [8,000~37,600] (17˚F)** - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 14
1-1. Unit Specifications 1. Specifications 4-Way Cassette (Type U1) MODEL No. Indoor Unit S-42PU1U6 Outdoor Unit U-42PE1U6 POWER SOURCE 230 - 208V / 1 Phase / 60Hz PERFORMANCE Cooling Heating Capacity * [minimum~muximum] BTU / h 39,500 [9,500~39,500] 48,000 [8,000~48,000] (17˚F)** - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 15
1-1. Unit Specifications 1. Specifications 4-Way Cassette (Type U1) MODEL No. Indoor Unit S-26PU1U6 Outdoor Unit U-26PS1U6 POWER SOURCE 230 - 208V / 1 Phase / 60Hz PERFORMANCE Cooling Capacity * [minimum~muximum] BTU / h 24,800 [9,500~24,800] (17˚F)** BTU / h Moisture removal (High) - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 16
1-1. Unit Specifications 1. Specifications 4-Way Cassette (Type U1) MODEL No. Indoor Unit S-36PU1U6 Outdoor Unit U-36PS1U6 POWER SOURCE 230 - 208V / 1 Phase / 60Hz PERFORMANCE Cooling Capacity * [minimum~muximum] BTU / h 32,600 [9,500~32,600] (17˚F)** BTU / h Moisture removal (High) - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 17
1-1. Unit Specifications 1. Specifications 4-Way Cassette (Type U1) MODEL No. Indoor Unit S-42PU1U6 Outdoor Unit U-42PS1U6 POWER SOURCE 230 - 208V / 1 Phase / 60Hz PERFORMANCE Cooling Capacity * [minimum~muximum] BTU / h 39,500 [9,500~39,500] (17˚F)** BTU / h Moisture removal (High) - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 18
1-1. Unit Specifications 1. Specifications Wall Mounted (Type K1) MODEL No. Indoor Unit S-26PK1U6 Outdoor Unit U-26PE1U6 POWER SOURCE 230 - 208V / 1 Phase / 60Hz PERFORMANCE Cooling Heating Capacity * [minimum~muximum] BTU / h 25,200 [9,500~25,200] 29,200 [8,000~29,200] (17˚F)** BTU - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 19
1-1. Unit Specifications 1. Specifications Wall Mounted (Type K1) MODEL No. Indoor Unit S-26PK1U6 Outdoor Unit U-26PS1U6 POWER SOURCE 230 - 208V / 1 Phase / 60Hz PERFORMANCE Cooling Capacity * [minimum~muximum] BTU / h 25,200 [9,500~25,200] (17˚F)** BTU / h Moisture removal (High) - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 20
1-1. Unit Specifications 1. Specifications Ceiling (Type T1) MODEL No. Indoor Unit S-26PT1U6 Outdoor Unit U-26PE1U6 POWER SOURCE 230 - 208V / 1 Phase / 60Hz PERFORMANCE Cooling Heating Capacity * [minimum~muximum] BTU / h 24,400 [9,500~24,400] 30,800 [8,000~30,800] (17˚F)** BTU / h - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 21
1-1. Unit Specifications 1. Specifications Ceiling (Type T1) MODEL No. Indoor Unit S-36PT1U6 Outdoor Unit U-36PE1U6 POWER SOURCE 230 - 208V / 1 Phase / 60Hz PERFORMANCE Cooling Heating Capacity * [minimum~muximum] BTU / h 31,200 [9,500~31,200] 37,400 [8,000~37,400] (17˚F)** BTU / h - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 22
1-1. Unit Specifications 1. Specifications Ceiling (Type T1) MODEL No. Indoor Unit S-42PT1U6 Outdoor Unit U-42PE1U6 POWER SOURCE 230 - 208V / 1 Phase / 60Hz PERFORMANCE Cooling Heating Capacity * [minimum~muximum] BTU / h 39,000 [9,500~39,000] 44,500 [8,000~44,500] (17˚F)** BTU / h - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 23
1-1. Unit Specifications 1. Specifications Ceiling (Type T1) MODEL No. Indoor Unit S-26PT1U6 Outdoor Unit U-26PS1U6 POWER SOURCE 230 - 208V / 1 Phase / 60Hz PERFORMANCE Cooling Capacity * [minimum~muximum] BTU / h 24,400 [9,500~24,400] (17˚F)** BTU / h Moisture removal (High) Pints - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 24
1-1. Unit Specifications 1. Specifications Ceiling (Type T1) MODEL No. Indoor Unit S-36PT1U6 Outdoor Unit U-36PS1U6 POWER SOURCE 230 - 208V / 1 Phase / 60Hz PERFORMANCE Cooling Capacity * [minimum~muximum] BTU / h 31,200 [9,500~31,200] (17˚F)** BTU / h Moisture removal (High) Pints - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 25
1-1. Unit Specifications 1. Specifications Ceiling (Type T1) MODEL No. Indoor Unit S-42PT1U6 Outdoor Unit U-42PS1U6 POWER SOURCE 230 - 208V / 1 Phase / 60Hz PERFORMANCE Cooling Capacity * [minimum~muximum] BTU / h 39,000 [9,500~39,000] (17˚F)** BTU / h Moisture removal (High) Pints - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 26
1-1. Unit Specifications 1. Specifications Low Silhouette Ducted (Type F1) MODEL No. Indoor Unit S-26PF1U6 Outdoor Unit U-26PE1U6 POWER SOURCE 230 - 208V / 1 Phase / 60Hz PERFORMANCE Cooling Heating Capacity * [minimum~muximum] BTU / h 24,000 [9,500~24,000] 28,600 [8,000~28,600] (17 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 27
1-1. Unit Specifications 1. Specifications Low Silhouette Ducted (Type F1) MODEL No. Indoor Unit S-36PF1U6 Outdoor Unit U-36PE1U6 POWER SOURCE 230 - 208V / 1 Phase / 60Hz PERFORMANCE Cooling Heating Capacity * [minimum~muximum] BTU / h 31,200 [9,500~31,200] 36,200 [8,000~36,200] (17 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 28
1-1. Unit Specifications 1. Specifications Low Silhouette Ducted (Type F1) MODEL No. Indoor Unit S-26PF1U6 Outdoor Unit U-26PS1U6 POWER SOURCE 230 - 208V / 1 Phase / 60Hz PERFORMANCE Cooling Capacity * [minimum~muximum] BTU / h 24,000 [9,500~24,000] (17˚F)** BTU / h - Moisture - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 29
1-1. Unit Specifications 1. Specifications Low Silhouette Ducted (Type F1) MODEL No. Indoor Unit S-36PF1U6 Outdoor Unit U-36PS1U6 POWER SOURCE 230 - 208V / 1 Phase / 60Hz PERFORMANCE Cooling Capacity * [minimum~muximum] BTU / h 31,200 [9,500~31,200] (17˚F)** BTU / h - Moisture - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 30
1-1. Unit Specifications 1. Specifications 4-Way Cassette 36" × 36" (Type U2) INDOOR MODEL S-26PU2U6 PANEL MODEL CZ-36KPU3U - OUTDOOR MODEL U-26PE1U6 Branch pipe MODEL - PERFORMANCE TEST CONDITION ARI Standard 210/240 POWER SUPPLY PH, Hz V 1PH, 60Hz 1PH, 60Hz 208 230 - 208 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 31
1-1. Unit Specifications 1. Specifications 4-Way Cassette 36" × 36" (Type U2) INDOOR MODEL S-36PU2U6 PANEL MODEL CZ-36KPU3U - OUTDOOR MODEL U-36PE1U6 Branch pipe MODEL - PERFORMANCE TEST CONDITION ARI Standard 210/240 POWER SUPPLY PH, Hz V 1PH, 60Hz 208 230 - 1PH, 60Hz 208 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 32
1-1. Unit Specifications 1. Specifications 4-Way Cassette 36" × 36" (Type U2) INDOOR MODEL S-42PU2U6 PANEL MODEL CZ-36KPU3U - OUTDOOR MODEL U-42PE1U6 Branch pipe MODEL - PERFORMANCE TEST CONDITION ARI Standard 210/240 POWER SUPPLY PH, Hz V 1PH, 60Hz 1PH, 60Hz 208 230 - 208 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 33
1-1. Unit Specifications 1. Specifications Wall Mounted (Type K2) INDOOR MODEL S-26PK2U6 PANEL MODEL - - OUTDOOR MODEL U-26PE1U6 Branch pipe MODEL - PERFORMANCE TEST CONDITION ARI Standard 210/240 POWER SUPPLY PH, Hz V 1PH, 60Hz 208 230 - 1PH, 60Hz 208 230 - Min Max - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 34
1-1. Unit Specifications 1. Specifications Ceiling (Type T2) INDOOR MODEL S-26PT2U6 PANEL MODEL - - OUTDOOR MODEL U-26PE1U6 Branch pipe MODEL - PERFORMANCE TEST CONDITION ARI Standard 210/240 POWER SUPPLY PH, Hz V 1PH, 60Hz 1PH, 60Hz 208 230 - 208 230 - Min CAPACITY *1 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 35
1-1. Unit Specifications 1. Specifications Ceiling (Type T2) INDOOR MODEL S-36PT2U6 PANEL MODEL - - OUTDOOR MODEL U-36PE1U6 Branch pipe MODEL - PERFORMANCE TEST CONDITION ARI Standard 210/240 POWER SUPPLY PH, Hz V 1PH, 60Hz 208 230 - 1PH, 60Hz 208 230 - Min Max CAPACITY - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 36
1-1. Unit Specifications 1. Specifications Ceiling (Type T2) INDOOR MODEL S-42PT2U6 PANEL MODEL - - OUTDOOR MODEL U-42PE1U6 Branch pipe MODEL - PERFORMANCE TEST CONDITION ARI Standard 210/240 POWER SUPPLY PH, Hz V 1PH, 60Hz 1PH, 60Hz 208 230 - 208 230 - Min CAPACITY *1 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 37
1-2. Major Component Specifications (A) Indoor Unit MODEL No. Source Controller P. C. B Ass'y Fan (Number ... diameter) Fan motor Model Source No. of pole ... r.p.m. (230 V, High) Nominal output Run capacitor Heat exchanger Coil Rows...Fin pitch Face area Drain pump Rated Height from drain - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 38
1-2. Major Component Specifications (A) Indoor Unit MODEL No. Source Controller P. C. B Ass'y Fan (Number ... diameter) in. (mm) Fan motor Model Source No. of pole ... r.p.m. (230 V, High) rpm Nominal output W Run capacitor VAC, µF Heat exchanger Coil Rows...Fin pitch Face area - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 39
1-2. Major Component Specifications (A) Indoor Unit MODEL No. Source Remote controller (Supplied / Optional) Controller P. C. B Ass'y Control circuit fuse Fan (Number ... diameter) Fan motor Model Source No. of pole ... r.p.m. (230 V, High) Nominal output Coil resistance (Ambient temperature 68 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 40
1-2. Major Component Specifications (A) Indoor Unit MODEL No. Source Remote controller (Supplied / Optional) Controller P. C. B Ass'y Control circuit fuse Fan (Number ... diameter) Fan motor Model Source No. of pole ... r.p.m. (230 V, High) Nominal output Coil resistance (Ambient temperature 68 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 41
1-2. Major Component Specifications (A) Indoor Unit MODEL No. Source Remote controller (Supplied / Optional) Controller P. C. B Ass'y Control circuit fuse Fan (Number ... diameter) Fan motor Model Source No. of pole ... r.p.m. (230 V, High) Nominal output Coil resistance (Ambient temperature 68 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 42
1-2. Major Component Specifications (A) Indoor Unit MODEL No. Source Remote controller (Optional / Supplied) Controller P. C. B Ass'y Control circuit fuse Fan Number ... Dia. and length in. (mm) Fan motor Model Source No. of pole ... r.p.m. (230 V, High) rpm Nominal output W Coil - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 43
1-2. Major Component Specifications (A) Indoor Unit MODEL No. Source Remote controller (Supplied / Optional) Controller P. C. B Ass'y Control circuit fuse Fan (Number ... diameter) Fan motor Model Source No. of pole ... r.p.m. (230 V, High) Nominal output Coil resistance (Ambient temperature 68 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 44
1-2. Major Component Specifications (A) Indoor Unit MODEL No. Source Remote controller (Supplied / Optional) Controller P. C. B Ass'y Control circuit fuse Fan (Number ... diameter) Fan motor Model Source No. of pole ... r.p.m. (230 V, High) Nominal output Coil resistance (Ambient temperature 68 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 45
1-2. Major Component Specifications (A) Indoor Unit MODEL No. Source Remote controller (Supplied / Optional) Controller P. C. B Ass'y Control circuit fuse Fan (Number ... diameter) Fan motor Model Source No. of pole ... r.p.m. (230 V, High) Nominal output Coil resistance (Ambient temperature 68 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 46
1-2. Major Component Specifications (A) Indoor Unit MODEL No. Source Remote controller (Supplied / Optional) Controller P. C. B Ass'y Control circuit fuse Fan (Number ... diameter) Fan motor Model Source No. of pole ... r.p.m. (230 V, High) Nominal output Coil resistance (Ambient temperature 68 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 47
1-2. Major Component Specifications (A) Indoor Unit MODEL No. Source Remote controller (Supplied / Optional) Controller P. C. B Ass'y Control circuit fuse Fan (Number ... diameter) Fan motor Model Source No. of pole ... r.p.m. (230 V, High) Nominal output Coil resistance (Ambient temperature 68 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 48
1-2. Major Component Specifications (A) Indoor Unit MODEL No. Source Controller P. C. B Ass'y Fan (Number ... diameter) in. (mm) Fan motor Model Source No. of pole ... r.p.m. (230 V, High) rpm Nominal output W Safety device Heat exchanger Coil Rows ... Fins per inch Face area 1 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 49
1-2. Major Component Specifications (A) Indoor Unit MODEL No. Source Controller P. C. B Ass'y Fan (Number ... diameter) in. (mm) Fan motor Model Source No. of pole ... r.p.m. (230 V, High) rpm Nominal output W Safety device Heat exchanger Coil Rows ... Fins per inch Face area ft.2 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 50
1-2. Major Component Specifications (A) Indoor Unit MODEL No. Source Controller P. C. B Ass'y Fan (Number ... diameter) in. (mm) Fan motor Model Source No. of pole ... r.p.m. (230 V, High) rpm Nominal output W Safety device Heat exchanger Coil Rows ... Fins per inch Face area 1 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 51
1-2. Major Component Specifications (A) Indoor Unit MODEL No. Source Controller P.C.B. Ass'y Fan (Number...diameter / length) Fan motor Model Source No. of pole...r.p.m. (230 V, High) Coil resistance (Ambient temperature 68°F) Nominal output Safety device Heat exchanger Coil Rows...fins per inch - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 52
1-2. Major Component Specifications (A) Indoor Unit MODEL No. Source Controller P. C. B Ass'y Fan (Number ... diameter) Fan motor Model Source No. of pole ... r.p.m. (230 V, High) Nominal output Safety device Heat exchanger Coil Rows ... Fins per inch Face area 1 in. (mm) rpm W ft.2 (m2) 1. - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 53
1-2. Major Component Specifications (A) Indoor Unit MODEL No. Source Controller P. C. B Ass'y Fan (Number ... diameter) Fan motor Model Source No. of pole ... r.p.m. (230 V, High) Nominal output Safety device Heat exchanger Coil Rows ... Fins per inch Face area in. (mm) rpm W ft.2 (m2) 1. - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 54
1-2. Major Component Specifications (A) Indoor Unit MODEL No. Source Controller P. C. B Ass'y Fan (Number ... diameter) Fan motor Model Source No. of pole ... r.p.m. (230 V, High) Nominal output Safety device Heat exchanger Coil Rows ... Fins per inch Face area 1 in. (mm) rpm W ft.2 (m2) 1. - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 55
1-2. Major Component Specifications (B) Outdoor Unit MODEL No. Source Controller P.C.B. Ass'y Control circuit fuse (on the P.C.B."FIL-CH4872R") Compressor Model....number Nominal output Compressor oil Coil resistance (Ambient temperature 25 ° C) Safety control Microprocessor safety devices W gal. - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 56
1-2. Major Component Specifications (B) Outdoor Unit MODEL No. Source Controller P.C.B. Ass'y Control circuit fuse (on the P.C.B."FIL-CH4872R") Compressor Model....number Nominal output Compressor oil Coil resistance (Ambient temperature 25 ° C) Safety control Microprocessor safety devices W gal. - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 57
1-2. Major Component Specifications (B) Outdoor Unit MODEL No. Source Controller P.C.B. Ass'y Control circuit fuse (on the P.C.B."FIL-CH4872R") Compressor Model....number Nominal output Compressor oil Coil resistance (Ambient temperature 25 ° C) Safety control Microprocessor safety devices W gal. - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 58
1-2. Major Component Specifications (B) Outdoor Unit MODEL No. Source Controller P.C.B. Ass'y Control circuit fuse (on the P.C.B."FIL-CH4872R") Compressor Model....number Nominal output Compressor oil Coil resistance (Ambient temperature 25 ° C) Safety control Microprocessor safety devices W gal. - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 59
1-2. Major Component Specifications (B) Outdoor Unit MODEL No. Source Controller P.C.B. Ass'y Control circuit fuse (on the P.C.B."FIL-CH4872R") Compressor Model....number Nominal output Compressor oil Coil resistance (Ambient temperature 25 ° C) Safety control Microprocessor safety devices W gal. - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 60
1-2. Major Component Specifications (B) Outdoor Unit MODEL No. Source Controller P.C.B. Ass'y Control circuit fuse (on the P.C.B."FIL-CH4872R") Compressor Model....number Nominal output Compressor oil Coil resistance (Ambient temperature 25 ° C) Safety control Microprocessor safety devices W gal. - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 61
1-3. Other Component Specifications 1. Specifications Outdoor Unit MODEL No. U-26PE1U6, U-26PS1U6 Thermistor (Coil sensor) : TH2 to 5 Coil resistance kΩ 14 °F : 23.7 , 50 °F : 9.7 23 °F : 18.8 , 68 °F : 6.5 32 °F : 15.0 , 86 °F : 4.4 41 °F : 12.1 , 104 °F : 3.1 113 °F : 2.6 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 62
1-3. Other Component Specifications 1. Specifications Outdoor Unit MODEL No. Thermistor (Coil sensor) : TH2 to 5 Coil resistance kΩ Thermistor (Comp. discharge gas sensor) : TH6 Coil resistance kΩ Solenoid coil or 4 way valve 4 way valve Solenoid coil Electric expansion valve (MOV) 1 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 63
1-3. Other Component Specifications 1. Specifications Outdoor Unit MODEL No. U-42PE1U6, U-42PS1U6 Thermistor (Coil sensor) : TH2 to 5 Coil resistance kΩ 14 °F : 23.7 , 50 °F : 9.7 23 °F : 18.8 , 68 °F : 6.5 32 °F : 15.0 , 86 °F : 4.4 41 °F : 12.1 , 104 °F : 3.1 113 °F : 2.6 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 64
1-4. Dimensional Data Indoor Unit : Concealed Duct (Type F2) Air intake port side 1. Specifications Unit: inch (mm) g 6-49/64 (172) e 11-1/32 (280) 1 h 1-5/16 (33.4) D 2-1/8 (54) A(Suspension bolt pitch) B F-ø1/8 (ø3)holes 25-3/64 (636) Inspection access 23-5/8 × 23-5/8 (600 × 600 mm) ( - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 65
1-4. Dimensional Data Indoor Unit : 4-Way Cassette (Type U1) Type 26 4-7/8 10-9/32 8-11/16 Min. 2-15/32 Min. 19/32 3 1. Specifications 3-15/16 13-11/32 X-view 11-1/2 9-1/8 4-7/8 2-5/16 6-3/16 7-5/32 1 32-9/32 (Ceiling opening) 29-13/16 (Suspention bolt pitch) 12-1/8 4-7/8 1-7/8 1-3/ - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 66
1-4. Dimensional Data Indoor Unit : 4-Way Cassette (Type U1) Type 36, 42 4-7/8 11-15/32 9-19/32 13-11/32 3-15/16 1. Specifications Min. 2-15/32 Min. 19/32 3 X-view 11-1/2 9-1/8 2-5/16 6-3/16 4-7/8 7-5/32 1 32-9/32 (Ceiling opening) 13-5/16 1-3/16 33-27/32 29-13/16 (Suspention bolt - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 67
1-4. Dimensional Data Indoor Unit : Wall Mounted (Type K1) 1. Specifications Drain and wiring port (3-5/32) Refrigerant liquid line (3/8") Flare connection Refrigerant gas line (5/8") Flare connection 1 Drain hose OD 45/64 Dimension : inch 1-59 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 68
16 2-25/32 1 48-7/16 (Suspension bolt hole pitch) 1-3/8 50-13/32 26-3/8 9-7/8 Air intake 10 Air outlet or more (Service space) 51-3/16 Front 10 or more (Service space) 8-7/16 9-7/8 3-3/4 5-25/32 7-17/32 2 ft. or more 3-1/2 4-1/16 5-25/32 7-7/32 Dimension : inch Drain connection Drain - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 69
59-1/4 (Suspension bolt hole pitch) 1-3/8 61-7/32 26-3/8 5-1/2 7-3/4 9-7/16 9-7/8 Air intake 10 Air outlet or more (Service space) 62-1/32 Front 10 or more (Service space) 8-7/16 9-7/8 2 ft. or more 3-1/2 4-1/16 5-25/32 7-7/32 Dimension : inch Drain connection Drain connection for left - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 70
1-4. Dimensional Data Indoor Unit : Low Silhouette Ducted (Type F1) Type 26 10 7-15/32 1-3/8 2-3/4 5-1/8 11-7/32 31/32 6-7/8 12-7/32 8-9/32 31/32 13/32 31/32 6-5/16 31/32 1-3/16 2-3/4 24-13/16 3-11/32 Inspection access (17-23/32 × 17-23/32) (Field supply) 1 11 10-1/4 (Air outlet 15/16 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 71
1-4. Dimensional Data Indoor Unit : Low Silhouette Ducted (Type F1) Type 36 10 7-15/32 1-3/8 2-3/4 5-1/8 11-7/32 31/32 6-7/8 12-7/32 8-9/32 31/32 13/32 31/32 6-5/16 31/32 1-3/16 2-3/4 24-13/16 3-11/32 Inspection access (17-23/32 × 17-23/32) (Field supply) 1-9/16 (5-29/32) 2-15/16 2-9/16 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 72
1-4. Dimensional Data Indoor Unit : Low Silhouette Ducted (Type F1) Flange for the air intake duct (Field supply) : For Concealed Ducted Type Thickness more than T1/16 inch 1. Specifications 2-ø1/8 (Hole) 13/32 31/32 31/32 13/32 1 1-7/32 F 1/4 (Hole) 8-9/32 12-1/32 10-1/4 (O.D.) 31/32 29/ - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 73
. Suspending the Indoor Unit Fix the suspension bolts securely in the ceiling using the method shown in the diagrams by attaching them to the ceiling support structure, or by any other method that ensures that the unit will be securely and safely suspended. Note: For DC Fan Motor Tap Setting - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 74
1 1-4. Dimensional Data Indoor Unit : Wall mounted (Type K2) 41-15/16(1065) unit : mm(inch) 1 Refrigerant tubing (liquid tube) Type18 Type24 6.35 (1/4) (flared) 9.52 (3/8) (flared) 2 Refrigerant tubing (gas tube) Type18 Type24 12.7 (1/2) (flared) 15.88 (5/8) (flared) 3 Drain hose VP13 ( - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 75
(Suspension bolt pitch) 1-4. Dimensional Data Indoor Unit : Cealing (Type T2) Required Minimum Space for Installation and Service Dimensions of suspension bolt pitch and unit Length Type 26 inch mm 36, 42 inch mm A 48-17/64 1226 62-43/64 1541 B 50- - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 76
1-4. Dimensional Data Outdoor Unit: U-26PE1U6, U-26PS1U6 U-36PE1U6, U-36PS1U6 1. Specifications 1 1-68 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 77
1-4. Dimensional Data Outdoor Unit: U-42PE1U6, U-42PS1U6 1. Specifications 1 1-69 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 78
1-5 Refrigerant Flow Diagram 1-5. Refrigerant Flow Diagram Outdoor Unit : U-26PE1U6, U-26PS1U6 Outdoor Unit :UU-3-62P6PEE1U1U6,6U, U-3-62P6PSS1U1U66 U-36PE1U6, U-36PS1U6 1. Specifications 1. Specifications Indoor Unit : 26, 30, 36 Types Indoor Unit : Type 26, 30, 36 Ø5/8 in. (Ø15.88) 1 Ø3/8 in. - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 79
11--55. RReeffrriiggeerraannttFFlloowwDDiiaaggrraamm OOuuttddoooorr UUnniitt:: UU--4422PPEE11UU66,, UU--4422PPSS11UU66 IInnddoooorr UUnniitt:: 4Ty2pTeyp4e2 11.. SSppeecciiffiiccaattiioonnss Ø5/8 in. (Ø15.88) 1 Ø3/8 in. (Ø9.52) 11--66. OOppeerraattiinnggRRaannggee CCoooolliinngg HHeeaattiinngg - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 80
1-7. Capacity Correction Graph According to Temperature Condition U-26PE1U6, U-26PS1U6 U-36PE1U6, U-36PS1U6 U-42PE1U6, U-42PS1U6 1. Specifications 1 1-72 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 81
1-8. Noise Criterion Curves 1. Specifications Concealed Duct (Type F2) MODEL : S-26PF2U6 SOUND LEVEL : HIGH 35 dB(A), NC 29/ LOW 26 dB(A), NC 20 CONDITION : 4.9 ft. directly below unit SOURCE : 208-230V,1Phase,60Hz 90 MODEL : S-36PF2U6 SOUND LEVEL : HIGH 39 dB(A), NC 33/ LOW 31 dB(A), NC - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 82
1-8. Noise Criterion Curves 4-Way Cassette (Type U1) MODEL : S-26PU1U6 SOUND LEVEL : HIGH 38 dB(A), NC 31 LOW 31 dB(A), NC 23 CONDITION : 4.9 ft. directly below unit SOURCE 60 : 208 - 230 V, 1 Phase, 60 Hz 1. Specifications MODEL : S-36PU1U6 SOUND LEVEL : HIGH 44 dB(A), NC 37 LOW 33 dB - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 83
1-8. Noise Criterion Curves Wall Mounted (Type K1) S-26PK1U6 CONDITION SOURCE : Distance 3.3 ft., Under the unit 3.3 ft. : 208 - 230 V, 1 Phase, 60 Hz 1. Specifications 1 1-75 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 84
1-8. Noise Criterion Curves Ceiling (Type T1) MODEL : S-26PT1U6 SOUND LEVEL : HIGH 40 dB(A), NC 34 LOW 36 dB(A), NC 26 CONDITION : Distance 3.3 ft., Under the unit 3.3 ft. SOURCE 60 : 208 - 230 V, 1 Phase, 60 Hz 1. Specifications MODEL : S-36PT1U6 SOUND LEVEL : HIGH 46 dB(A), NC 39 LOW - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 85
1-8. Noise Criterion Curves Low Silhouette Ducted (Type F1) MODEL : S-26PF1U6 SOUND LEVEL : HIGH 34 dB(A), NC 22 / LOW 27 dB(A), NC 18 CONDITION : 4.9 ft. directly below unit SOURCE : 208 - 230 V, 1 Phase, 60 Hz 1. Specifications MODEL : S-36PF1U6 SOUND LEVEL : HIGH 38 dB(A), NC 30 / LOW - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 86
1-8. Noise Criterion Curves 4-Way Cassette 36" × 36" (Type U2) MODEL : S-26PU2U6 SOUND LEVEL : High 37 dB(A) Low 28 dB(A) CONDITION : Under the unit 4.9 ft. SOURCE : 208-230V, 1 Phase, 60Hz 60 NC-60 Octave Band Level (dB) *0dB = 0.0002 µbar 50 NC-50 40 NC-40 30 NC-30 Approximate 1 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 87
1-8. Noise Criterion Curves Wall Mounted (Type K2) Sound pressure level (dB) (0dB = 0.0002 bar) MODEL : S-26PK2U6 SOUND LEVEL : High 48 dB(A) Low 38 dB(A) CONDITION : Distance 3.3 ft., Under the unit 3.3 ft. SOURCE : 208-230V, 1 Phase, 60Hz 90 80 70 NC-70 60 NC-60 50 NC-50 40 NC-40 30 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 88
Sound pressure level (dB) (0dB = 0.0002 bar) Sound pressure level (dB) (0dB = 0.0002 bar) 1-8. Noise Criterion Curves Ceiling (Type T2) MODEL : S-26PT2U6 SOUND LEVEL : High 39 dB(A) CONDITION Low 31 dB(A) : 3.3 ft. from front of outlet at height of 3.3 ft. SOURCE : 208-230V, 1 Phase, 60Hz - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 89
1-8. Noise Criterion Curves Outdoor Units U-26PE1U6, U-26PS1U6 1. Specifications UU--3366PPEE11UU66,, UU--3366PPSS11UU66 1 UU--4422PE1U6, U-42PS1U6 REMARKS: 1. Value obtained in the actual place where the unit is installed may be slightly higher than the values shown in this graph because of the - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 90
pressure is too great (due to long extension of ducts, for example), the air flow volume may drop too low at each air outlet. This problem may be solved by increasing the fan speed using the following procedure: (1) Remove 4 screws on the electrical component box and remove the cover plate - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 91
setting (set with the PC board) TP3 or TP1 short-circuit Refer to section "1-10-1. How to Set on PC Board". c. Manual setting Item code "b0" : 0~15 setting (*Note (3)) (* Note (4)) Refer to section 1-10-2 or 1-10-3. d. Auto airflow volume setting (* Note (4)) Item code "b0" : -2 setting Refer - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 92
". When amending the setting after selecting [ b. Manual setting] (due to airflow path changes, etc.), it is necessary to cancel [b. Manual setting] (disconnect short-circuit connector). When [b. Manual setting] has not been cancelled, [c. Manual setting] and [d. Auto airflow volume setting] will - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 93
1. Specifications 1-10-1. How to Set on PC Board 1. Turn off the power breaker to halt the supply of electricity to the PC board. 2. Open the lid of electrical equipment box and check where the shortcircuit pin on the indoor unit control PC board is located (Fig. 1-1) 3. Short circuit the - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 94
simultaneously for 4 or more seconds. 1 The "Maintenance func" screen appears on the LCD display. Maintenance func 20:30 (THU) 1. Outdoor unit error data 2. Service contact 3. RC setting mode 4.Test run Sel. Page [ ] Confirm 2. Press the or button to see each menu. If you wish to see the - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 95
, press the or button. Select "4. Test run" on the LCD display and press the button. Maintenance func 20:30 (THU) 1. Outdoor unit error data 2. Service contact 3. RC setting mode 4.Test run Sel. Page [ ] Confirm The "Test run" screen appears on the LCD display. Test run 20:30 (THU) Test - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 96
Indoor Fan Performance Item code " " 1. Specifications Heating Cooling Heating Cooling Heating Cooling Heating Cooling aatt sshhiippmmeenntt Heating Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling External static pressure Limit line - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 97
1-11. Air Throw Distance Chart 4-Way Cassette (Type U1) Type 26 HORIZONTAL DISTANCE (ft.) 03 7 10 13 17 20 0 AXIS AIR VELOCITY 3 AXIS AIR VELOCITY (ft./sec) VERTICAL DISTANCE (ft.) 7 10 13 2111_X_I AXIS AIR VELOCITY (ft./sec) VERTICAL DISTANCE (ft.) Type 36, 42 HORIZONTAL DISTANCE (ft.) - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 98
Axis air velocity (ft./sec.) Vertical distance (ft.) 1-11. Air Throw Distance Chart Wall Mounted (Type K1) Type 26 0 5 10 13 Horizontal distance (ft.) COOLING - - - - - HEATING 1 FAN SPEED HIGH HIGH ROOM AIR TEMP. 80°F 70° F FLAP ANGLE 0°, 22.5°, 45° 45°, 67.5° 1. Specifications 1-90 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 99
1-11. Air Throw Distance Chart Ceiling (Type T1) Type 26 AXIS AIR VELOCITY (ft./sec) VERTICAL DISTANCE (ft.) HORIZONTAL DISTANCE (ft.) 0 3 7 10 13 17 20 23 26 29 33 0 3 AXIS AIR VELOCITY 7 10 13 17 2115_T_I Type 36 AXIS AIR VELOCITY (ft./sec) VERTICAL DISTANCE (ft.) HORIZONTAL DISTANCE ( - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 100
1-11. Air Throw Distance Chart ● 4-Way Cassette 36"× 36" (Type U2) Type 26 Heating : Distribution of wind velocity (Strong wind : Discharge angle approx.65 ) 118 79 39 1. Specifications (Room temperature approx.70°F) 59in/s 118 39in/s 20in/s 79 12in/s 39 Vertical air flow distance (in.) - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 101
1-11. Air Throw Distance Chart ● 4-Way Cassette 36"× 36" (Type U2) Type 36, 42 Heating : Distribution of wind velocity (Strong wind : Discharge angle approx.65 ) 118 79 1. Specifications (Room temperature approx.70°F) 59in/s 39in/s 118 20in/s 12in/s 79 Vertical air flow distance (in.) 39 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 102
1-11. Air Throw Distance Chart ● Wall Mounted (Type K2) Type 26 Heating : Distribution of wind velocity 9.8 6.6 (Strong / Outlet Angle=60 ) (Rm. temp. 68°F) 4.9 ft/s 3.9 ft/s 2.9 ft/s 0.98 ft/s 2.0 ft/s Vertical air flow distance (ft.) 3.3 0 0.98 ft/s 0 3.3 6.6 9.8 13.1 16.4 Horizontal - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 103
Vertical air flow distance (in.) 1-11. Air Throw Distance Chart ● Ceiling (Type T2) Type 26 Heating : Distribution of wind velocity (Strong wind : Discharge angle approx.54 ) 0 59in/s 39 39in/s 20in/s 79 12in/s 118 (Room temperature approx.70°F) Vertical air flow distance (in.) 1570 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 104
1-11. Air Throw Distance Chart ● Ceiling (Type T2) Type 36, 42 Heating : Distribution of wind velocity (Strong wind : Discharge angle approx.54°) 0 59in/s 39 39in/s 20in/s 79 12in/s (Room temperature approx.70°F) Vertical air flow distance (in.) 118 Vertical air flow distance (in.) - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 105
1-12. ELECTRICAL WIRING 1. Specifications General Precautions on Wiring (1) Before wiring, confirm the rated voltage of the unit as shown on its nameplate, then carry out the wiring closely following the wiring diagram. WARNING (2) This equipment is strongly recommended to be installed with - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 106
with the remote controller unit (optional). Auto address setting can be executed by remote controller automatically. Refer to the installation instructions supplied with the remote controller unit (optional). (5) Ensure that the ground shield cable for inter-unit control wiring between outdoor - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 107
. WARNING A fire hazard may also occur. Therefore, ensure that all wiring is tightly connected. When connecting each power wire to the terminal, follow the instructions on "How to connect wiring to the terminal" and fasten the wire securely with the fixing screw of the terminal board. How to connect - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 108
1-13. Installation Instructions Outdoor Unit 1. Tubing Size Single type Refrigerant tubing between the indoor and outdoor units should be kept as short as possible. The length of the - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 109
units should be installed within the same room. If multi type indoor units are installed in different rooms, temperature control may develop problems because thermostat operation must follow the thermostat condition of 1 indoor unit only (the main unit). WARNING Always check the gas density for - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 110
(concrete block, 4"×16" beams or equal), a minimum of 6" above ground level to reduce humidity and protect the unit against possible water damage and decreased service life. (Fig. 1-8) use lug bolts or equal to bolt down unit, reducing vibration and noise. Anchor bolts (4 pieces) 1-102 Fig. 1-8 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 111
exposure to the wind should be avoided as much as possible. Countermeasures against snow and wind In regions with snow and strong wind, the following problems may occur when the outdoor unit is not provided with a platform and snow-proof ducting: a) The outdoor fan may not run and damage to the - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 112
3-5. Dimensions of Wind Ducting Reference diagram for air-discharge chamber (field supply) For U-26PE(S)1U6 / U-36PE(S)1U6 unit ᶃ Air discharge chamber ᶄ Air discharge chamber (base) 3-ø5/32 hole 1. Specifications 9-7/8 (25/32) 2 21-13/16 6-ø15/64 hole (25/32) (25/32) 1 1 2 Rectangular - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 113
Dimensions of Outdoor Unit with air-discharge chamber (field supply) U-26PE(S)1U6 / U-36PE(S)1U6 unit 6-11/16 25-31/32 4-5/16 1/2 Wind direction 1/2 25/32 13/32 14-31/32 15-15/16 13-3/8 dWireincdtion 25/32 19/32 2-17/32 1/2 21-13/16 37 Wind direction 9-7/8 4-1/16 21-5/8 5-3/16 30-23/ - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 114
Reference diagram for air-discharge chamber (field supply) 1. Specifications U-26PE(S)1U6 / U-36PE(S)1U6 / U-42PE(S)1U6 Required space around outdoor unit If the air discharge chamber is used, the space shown below must be secured around the outdoor unit. If the unit is used without the required - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 115
3-6. Dimensions of Snow Ducting Reference diagram for snow-proof vents (field supply) For U-26PE(S)1U6 / U-36PE(S)1U6 unit ᶃ Unit top, snow-proof vent ᶄ Unit left side ᶅ Unit right side ᶆ Unit reverse side ᶇ Unit reverse side ᶈ Unit sides, reinforcement brackets for snow-proof vent 30-3/32 Fastened - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 116
Dimensions of outdoor unit with snow-proof vents (field supply) U-26PE(S)1U6 / U-36PE(S)1U6 unit 30-5/64 7-3/64 Wind direction Wind direction 1. Specifications 25/32 25/64 25-25/64 14-61/64 15-15/16 Wind direction Wind direction 37-1/64 3/4 19/32 11-57/64 1 Wind direction Wind - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 117
Reference diagram for snow-proof vents - 1 Space requirements for setting - (1) U-26PE(S)1U6 / U-36PE(S)1U6 / U-42PE(S)1U6 [Obstacle to the rear of unit] Top is open: (1) Single-unit installation (2) Obstacles on both sides 1. Specifications [Obstacle to the front of unit] Top is open: (1) Single- - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 118
Reference diagram for snow-proof vents - 2 Space requirements for setting - (2) U-26PE(S)1U6 / U-36PE(S)1U6 / U-42PE(S)1U6 1. Specifications [Obstacles to the front and rear of unit] The top and both sides must remain open. Either the obstacle to the front or the obstacle to the rear must be no - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 119
bolt (M10) 4-3. Routing the Tubing and Wiring The tubing and wiring can be extended out in 4 directions: front, rear, right, and down. The service valves are housed inside the unit. To access them, remove the inspection panel. (To remove the inspection panel, remove the 3 screws, then slide the - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 120
4-4. HOW TO PROCESS TUBING The liquid tubing side is connected by a flare nut, and the gas tubing side is connected by brazing. 1. Connecting the Refrigerant Tubing Use of the Flaring Method Many conventional split system air conditioners employ the flaring method to connect refrigerant tubes - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 121
caused by refrigerant leakage. In order to prevent damage to the flare caused by over-tightening of the flare nuts, use the table above as a guide when tightening. When tightening the flare nut on the liquid tube, use an adjustable wrench with a nominal handle length of 7-7/8 in. 1-113 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 122
Do not use a spanner to tighten the valve stem caps. Doing so may damage the valves. Depending on the installation conditions, applying excessive torque may cause the nuts to crack. Precautions for Packed Valve Operation If the packed valve is left for a long time with the valve stem cap removed, - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 123
4. Taping the Tubes (1) At this time, the refrigerant tubes (and electrical wiring if local codes permit) should be taped together with armoring tape in 1 bundle. To prevent condensation from overflowing the drain pan, keep the drain hose separate from the refrigerant tubing. (2) Wrap the armoring - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 124
all wiring for the test run has been completed. Remove the valve caps from both the gas and liquid service valves on the outdoor unit. Note that both liquid and gas tube service valves on the outdoor unit are kept closed at this stage. The refrigerant charge at the time of shipment - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 125
cylinder is used in a vertical standing position. (4) Do a leak test of all joints of the tubing (both indoor and outdoor) and both gas and liquid service valves. Bubbles indicate a leak. Wipe off the soap with a clean cloth after the leak test. (5) After the system is found to be free of leaks - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 126
(calculated from the liquid tube length as shown in Section "1-13. Installation Instructions, 1. Tubing Size, Table 1-4 Tubing Data for Models", Amount of additional refrigerant charge) using the liquid tube service valve. (Fig. 1-30) Use a balance to measure the refrigerant accurately. If the - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 127
uniformly cooled. select a location where the ceiling is strong enough to support the weight of the unit. select a location where tubing and tubing length (L) from the outdoor unit as detailed in the installation instructions packed with the outdoor unit. allow room for mounting the remote - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 128
) 26 42-1/64 (1,067) 36 57-3/4 (1,467) It is recommended that space be provided (23-5/8" × 23-5/8") (600 × 600 mm) for checking and servicing the electrical system. The detailed dimensions of the indoor unit is shown in Fig. 1-33 and Table 1-7. 1. Specifications Unit: inch (mm) A (Suspension - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 129
(use for upper and lower) Double nuts 1. Specifications Suspension bolt Suspension lug Suspension bolt (3/8" or M10) (field supply) Ceiling tiles Ceiling support Fig. 1-34 Suspension bolt Hexagonal nut Double nuts Notch Fig. 1-36 1 WARNING Fig. 1-35 Fig. 1-37 This shows an example of - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 130
should not be allowed to hang unsupported from its connection to the unit. Fasten the pipe to a wall, frame, or other support as close to the unit as possible. (Fig. 1-44) Support pieces Vinyl clamps (field supply) Fig. 1-40 NOTE Make sure the drain pipe has a downward slant (1/100 or more) and - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 131
29/32 (150) J H G H • To get clean air and to extend the service life of the air Type G H J K conditioner, an air filter must be installed 33/64 intake. For installation and cleaning the air filter, consult your dealer or service center. 26 mm 900 (Pitch 150 × 6) 25 13 18 36 inch - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 132
Fix the suspension bolts securely in the ceiling using the method shown in the diagrams (Figs. 1-46 and 1-47), by attaching them to the ceiling support structure, or by any other method that ensures that the unit will be securely and safely suspended. (2) Follow Fig. 1-47 and Table 1-8 to make the - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 133
6-7. Placing the Unit Inside the Ceiling (1) When placing the unit inside the ceiling, determine the pitch of the suspension bolts using the supplied full-scale installation diagram. (Fig. 1-49) The size of the opening for the indoor unit can be confirmed by attaching the full-scale installation - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 134
drain pipe. The pipe should not be allowed to hang unsupported from its connection to the unit. Fasten the pipe to a wall, frame, or other support as close to the unit as possible. (Fig. 1-56) Provide insulation for any drain pipe that is run indoors. Refer to " SUPPLEMENT ON DRAIN PIPING - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 135
pan to check drainage. (2) Do Test Run to check the drainage after completing installation. When performing Test Run, refer to the installation instructions attached to the outdoor unit. CAUTION Be careful since the fan will start turning when checking the drainage. (3) After drain checking is - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 136
Ceiling Panel CAUTION Never touch or attempt to move the air direction louver by hand or you may damage the unit. Instead, use the remote controller if you want to change the direction or air flow. 6-10. Before Installing the Ceiling Panel (1) Remove the air-intake grille and air filter from the - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 137
the safety cord in its original position before closing the air-intake grille. 6-12. When Removing the Ceiling Panel for Servicing When removing the ceiling panel for servicing, remove the air-intake grille and air filter, disconnect the wiring connector inside the electrical component box, and then - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 138
screws. (M4 × L1/2", 4 pcs) (c) Installing the indoor unit Install the indoor unit to the ceiling. (Install the indoor unit according to instructions enclosed with the outdoor unit.) Air-intake plenum CAUTION When installing in a preexisting location, install the indoor unit before installing the - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 139
(d) Installing the ceiling panel Attach the ceiling panel to the air-intake plenum. Drawing the panel downwards sets the panel in position temporarily with the panel catch (at 2 locations). Remove the socket cover of the air-intake plenum and pass the 8P sockets through it. (Fix the panel lead wire - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 140
Wall Mounted (Type K1) 6-14. Removing the Wall Fixture from the Unit Remove the set screws and take off the rear panel. (Fig. 1-64) NOTE Tubing can be extended in 3 directions as shown in Fig. 1-65. Select the direction that provides the shortest run to the outside unit. 6-15. Selecting and Making a - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 141
6-16. Installing the Rear Panel on the Wall Be sure to confirm that the wall is strong enough to suspend the unit. See either Item a) or b) below depending on the wall type. a) If Wooden Wall (1) Attach the rear panel to the wall with the 10 screws provided. (Fig. 1-70) If you are not able to line - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 142
6-17. Removing the Grille to Install the Indoor Unit Basically, these models can be installed and wired without removing the grille. If access to any internal part is needed, follow the steps given below: How to remove the grille (1) Set the 2 flaps in the horizontal position. (2) Unscrew the 3 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 143
. The manufacturer will accept no responsibility for any damage or misoperation that occurs as a result of such unauthorized changes. 6-20. Wiring Instructions for Inter-Unit Connections (1) Insert the inter-unit wiring (according to local electrical codes) into the through-the-wall PVC pipe. Run - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 144
6-21. Shaping the Tubing (1) Shape the refrigerant tubing so that it can easily go into the hole. (Fig. 1-79) (2) Push the wiring, refrigerant tubing and drain hose through the hole in the wall. Adjust the indoor unit so it is securely seated on the wall fixture. (3) Carefully bend the tubing (if - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 145
type: (a) Insert suspension bolts as shown in Fig. 1-85. or (b) Use existing ceiling supports or construct a suitable support as shown in Fig. 1-86. WARNING It is important that you use extreme care in supporting the indoor unit from the ceiling. Ensure that the ceiling is sufficiently strong - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 146
(5) Before suspending the indoor unit, remove the 2 screws on the latch of the air-intake grilles, open the grilles, and remove them by pushing the claws of the hinges as shown in Fig. 1-88. Then remove both side panels sliding them along the unit toward the front after removing the two screws which - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 147
(7) Suspend the indoor unit as follows. (a) Mount a washer and two hexagonal nuts on each suspension bolt as shown in Fig. 1-92. (b) Lift the indoor unit with a lifting machine to the ceiling surface, and place it on the washers through the notches, to fix it in place. (Fig. 1-93) (c) Tighten the - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 148
7-3/32" 1-31/32" Fig. 1-98 Good Min. 1/100 CAUTION Check local electrical codes and regulations before obtaining wire. Also, check any specified instruction or limitations. Not good Fig. 1-99 Drain pipe clamp (supplied) Indoor unit Adhere with PVC adhesive. Hard PVC pipe (not supplied) Side - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 149
outlet ports are visible from below. The minimum space for installation and service is shown in Fig. 1-101 and Table 1-11. It is recommended that space be provided (17-23/32" × 17-23/32") for checking and servicing the electrical system. Fig. 1-102 and Table 1-12 show the detailed dimensions of - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 150
. Hole-in-anchor Hole-in-plug 1. Specifications Concrete Insert Suspension bolt (M10 or 3/8") (field supply) Fig. 1-103 Ceiling tiles Ceiling support Fig. 1-04 Nuts and washers (2 sets) Suspension bolt Suspension lug Upper Lower Fig. 1-105 Suspension bolt Hexagonal nut Fig. 1-106 1-142 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 151
Fig. 1-107 shows an example of installation. Air outlet duct Air-outlet grille Ceiling material Indoor unit 1. Specifications Bolt anchor Suspension bolt Air-intake duct Air-intake grille Fig. 1-107 1 6-28. Installing the Drain Piping (1) Prepare standard hard PVC pipe for the drain and use - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 152
drain pipe. The pipe should not be allowed to hang unsupported from its connection 1 to the unit. Fasten the pipe to a wall, frame, or other support as close to the unit as possible. (Fig. 1-113) Refer to " SUPPLEMENT ON DRAIN PIPING". 6-29. Checking the Drainage After wiring and drain piping - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 153
pressure is too great (due to long extension of duct, for example), the air flow volume may drop too low at each air outlet. This problem may be solved by increasing the fan speed as explained above. Refer to " SUPPLEMENT ON DRAIN PIPING". External Static Pressure Indoor Fan Performance Type 26 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 154
of the ceiling-mount hanger by using a level gauge (Prohibited) or vinyl tubing. (Prohibited) Fig. 1-116 6-32. Required Minimum Space for Installation and Service If the ceiling tiles cannot be removed, provide the opening holes on the lower side of the indoor unit for removing the unit in - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 155
SUPPLEMENT ON DRAIN PIPING 1. Specifications Checkpoint after installation After installation of indoor and outdoor units, panels and electrical wiring, check the following items. Checkpoint Symptom Check Remark 1 Make sure whether indoor and outdoor units are correctly installed. Fall, - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 156
cooled. select a location where the ceiling is strong enough to support the weight of the unit. 1 select a location where tubing total tubing length (L) from the outdoor unit as detailed in the installation manual packed with the outdoor unit. allow room for mounting the remote controller - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 157
Fix the suspension bolts securely in the ceiling using the method shown in the diagrams (Figs. 1-119 and 1-120), by attaching them to the ceiling support structure, or by any other method that ensures that the unit will be securely and safely suspended. (2) Follow Fig. 1-120 and Table 1-13 to make - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 158
6-36. Placing the Unit Inside the Ceiling This unit is equipped with the drain pump. Check a tape measure or carpenter's level. Before installing the ceiling panel, complete the work of drain pipe and refrigerant pipe installation. (1) When placing the unit inside the ceiling, determine the pitch - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 159
unit Fig. 1-125 Do not install an air bleeder as this may cause water to spray 1 from the drain pipe outlet. (Fig. 1-125) Separation of support bracket = 4.92 ft. (1.5 m) ~ 6.56 ft. (2 m) Do not provide U-trap or bell-shaped trap in the middle of the drain pipe. Doing so will cause abnormal - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 160
facing the screw of the hose band upward. (Torque: 22 - 30 lbf·inch (2.5 N·m - 3.4 N·m)) (If the screw is tightened beneath the drain hose, the troubles will be generated.) Pay attention not to make hose band overlap the circular projection rib and the sealed circulation projection of the drain port - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 161
1. Specifications 6-39. Checking the Drainage Be careful because the fan will start when you short the pin on the indoor control board. After wiring (refer to "1-12. ELECTRICAL WIRING".) and drain piping are completed, use the following procedure to check that the water will drain smoothly. For this - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 162
1. Specifications 6-40. General Precautions on Wiring (1) Before wiring, confirm the rated voltage of the unit as shown on its nameplate, then carry out the wiring closely following the wiring diagram. WARNING (2) This equipment is strongly recommended to be installed with Earth Leakage Circuit - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 163
6-42. How to Install the Ceiling Panel (1) Removing the air-intake grille 1) Remove the 2 screws on the latch of the air-intake grille. (Fig. 1-131) (Reattach the air-intake grille after installation of the ceiling panel.) 2) Slide the air-intake grille catches in the direction shown by the arrows - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 164
CAUTION If the screws are not sufficiently tightened, trouble such as that shown in the figure below may occur. Be sure to tighten the screws securely. Air leakage Air leakage from ceiling panel Staining - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 165
. (2) Operating the Wireless Remote Controller For details of installation, refer to the section "Wireless Signal Receiver" in the supplied installation instructions. (3) Selecting DC Fan Motor Tap (4-Way cassette 36" × 36") Check the optional parts accordingly in the following table. Table for - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 166
Stop the system before performing these steps. 1 Keep pressing the , and simultaneously for 4 or more seconds. buttons The "Maintenance func" screen appears on the LCD display. 1. Specifications 6 Press the button. The "Exit detailed settings and restart?" ( - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 167
(4) Setting the Flap Separately 1) The 4-air outlet flap can be adjusted separately during operation. When not adjusted separately, all flaps operate in the same manner. Air discharge port Flap (adjustment for up-down airflow direction) Stop the system before performing - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 168
Stop the system before performing these steps. 1 Keep pressing the , and simultaneously for 4 or more seconds. buttons The "Maintenance func" screen appears on the LCD display. 1. Specifications 2 Press the or button to see each menu. If you wish to see the - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 169
1. Specifications When the flap position is set to 4 or 5 and the unit is in the cooling or dry mode, the flap position is moved to 3 and the operation is started. (refer to Fig. 1-143) If you wish to change the selected indoor unit, follow the step 2. Stop the system before - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 170
mounting bracket Wire cover Figure Figure Q'ty Remarks 1 Card board Q'ty Remarks 1 1 Clamper Screw Part Name Operating Instructions Installation Instructions Warranty card Figure 1 For wire mounting 3 bracket and wire cover Q'ty Remarks 1 1 1 Use 3/8" (M10) for suspension bolts - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 171
Wall Mounted (Type K2) 6-45. Remove the Rear Panel from the Unit (1) Remove and discard the set screw on the rear panel. (Fig. 1-144) (2) Press the 2 marks on the frame cover and disengage the stationary tabs from the frame. (Fig. 1-145) (3) Remove the rear panel by grasping the sections shown in - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 172
(4) Using a sabre saw, keyhole saw or hole-cutting drill attachment, cut a hole in the wall. See Table 1-15 and Fig. 1-150. Table 1-15 Hole Dia. 3-5/32" (80 mm) (5) Measure the thickness of the wall from the inside edge to the outside edge and cut PVC pipe at a slight angle 1/4" (6 mm) shorter than - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 173
6-48. Removing and Installing the Grille Basically, these models can be installed and wired without removing the grille. If access to any internal part is needed, follow the steps as given below. Front panel 1. Specifications Arm How to remove the grille (1) Open the front panel until it is - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 174
unit on the rear panel: Hang the 3 mounting slots of the unit on the upper tabs of the rear panel. (Fig. 1-164) 6-50. Wiring Instructions General precautions on wiring (1) Before wiring, confirm the rated voltage of the unit as shown on its nameplate, then carry out the wiring closely following - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 175
of the rear plate. (Fig. 1-165) NOTE For tubing, choose either the right or left tubing direction and follow the steps below. Also, extend the support on the back of the indoor unit as a stand to make your work easier. (Fig. 1-166) 6-52. Right-side tubing (1) Shape the refrigerant tubing so - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 176
6-53. Left-side tubing (1) Lead the tubing and drain hose through the wall, allowing sufficient length for connection. Then bend the tubing using a tube bender to make the attachment. (Fig. 1-171) (2) Switch the drain hose and drain cap. Switching drain hose and drain cap (a) Locate the drain hose - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 177
To unmount indoor unit (1) Remove the screw cover on the bottom surface. (Fig. 1-176) (2) Fasten the frame to the rear panel using the 2 supplied tapping screws 5/32 × 13/32" (4 × 10 mm). (Fig. 1-176) (3) Press the 2 marks on the lower part of the indoor unit and unlatch the tabs. Then lift the - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 178
cooled. select a location where the ceiling is strong enough to support the weight of the unit. select a location where tubing and tubing length (L) from the outdoor unit as detailed in the Installation Instructions packed with the outdoor unit. allow room for mounting the remote controller - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 179
(Suspension bolt pitch) 6-56. Required Minimum Space for Installation and Service (1) Dimensions of suspension bolt pitch and unit Length Type 26 inch mm 36, 42 inch mm A 48-17/64 1226 62-43/64 1541 B 50- - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 180
the ceiling type: a) Insert suspension bolts (Fig. 1-191). or b) Use existing ceiling supports or construct a suitable support (Fig. 1-192). Hole-in-anchor Hole-in-plug Concrete Insert Ceiling tiles Ceiling support Screw Side plate Fig. 1-187 1-172 Suspension bolt (M10 or 3/8") (not supplied - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 181
the indoor unit from the ceiling. Ensure that the ceiling is strong enough to support the weight of the unit. Before hanging the ceiling unit, test the strength of each attached suspension bolt. (5) Screw in the suspension bolts, allowing them - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 182
NOTE The hole should be made at a slight downward slant to the outside. Indoor side Outdoor side PVC pipe (not supplied) INSIDE Fig. 1-200 Wall OUTSIDE 1. Specifications * If the drain hose is routed through the left side, refer to Fig. 1-198, and follow the procedure above to install the - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 183
. Safety string Part Name Wire cover Figure Q'ty Remarks 1 For control box Screw 1 For wire cover Part Name Operating Instructions Installation Instructions Warranty card Figure Q'ty Remarks 1 1 1 Use 3/8" (M10) for suspension bolts. Field supply for suspension bolts and nuts. Fig - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 184
7. HOW TO INSTALL THE WIRELESS REMOTE CONTROLLER 1. Specifications IMPORTANT When using this air conditioner with the wireless remote controller it may sometimes be impossible to change the operation modes while other indoor unit is running. When this happens, a double beep tone sounds, the ( - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 185
7-2. Room Temperature Sensor Setting 1. Specifications The room temperature sensors are built into the indoor unit and the wireless remote controller. Either of these room temperature sensors can operate. The system is shipped from the factory set to the indoor unit sensor. To switch to the remote - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 186
4-Way Cassette Type (Type U1) 7-5. Indicator Section Installation Remove the ceiling panel and indicator cover and install the indicator section. (1) Remove the ceiling panel. (2) Remove the corner cover behind the mark section. (3 screws) (3) Remove the mark section inside the ceiling - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 187
Ceiling (Type T1) 7-7. Indicator Section Installation Remove the side panel to install the indicator section. (Fig. 1-214) (1) Remove the side panel. Open the air intake grille, remove the screw at one place and then remove the side panel by sliding it toward the front (arrow direction). (2) Remove - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 188
7-9. Electrical Wiring Signal receiving unit Indoor PCB WL 1 2 W1 (4.3 ft.) WHT BLK Operating controller W2 CN1 CN2 (0.7 ft.) BLU YEL PNK RED GRY BLK W3 Indicator section (4.3 ft.) CN1 BLU YEL PNK RED GRY BLK Relay connector 1. Specifications Fig. 1-216 Connection method (1) Connect W1 to - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 189
the indoor unit. (See Table 1-16 and Fig. 1-218.) Table 1-16 Alarm (OPERATION lamp) (TIMER lamp) (STANDBY lamp) Cause of Trouble S.C. errors* between the indoor unit's controller (PCB) and the remote controller. Compressor protector is working. S.C. errors between indoor and outdoor units - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 190
three clips are correctly located, and then fix it in place with the screws. Make sure the wire is not caught. Refer to the installation instructions supplied with the panel. Bend the part (shaded area) with a screwdriver or similar implement to allow the wire to pass through. Fix it in place - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 191
is installed in the same room, setting addresses prevents interference. For how to change addresses of wireless remote controllers, see the operating instructions of wireless remote controllers. To change the receiver's address, remove the cover from the receiver's PCB and set No.1 to No.3 of - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 192
CZ-RWST2U 7-17. Supplied Accessories Wireless Remote Remote Control Controller Holder (1) (1) Supplied Accessories AAA Size Battery (2) Operating Instructions (1) Wood Screw (2) Clamper (1) 1. Specifications 7-18. Installing the Receiver 1 Open the air inlet grill on the side panel. - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 193
alarm contents displayed when the wired remote controller is connected. For how to handle the alarms, see installation instructions of indoor units or technical guide. Detected contents Communication error in the remote controller circuit Communication error either in the in/ outdoor operation line - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 194
1. Specifications CAUTION If the signal receiving unit is installed near a rapid-start or inverter type fluorescent lamp (neither one uses glow lamps), it may be impossible to receive signals from the wireless remote controller. To avoid signal interference from fluorescent lamps, - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 195
the notch in the lower section and prying it off. (2) Cut out a section (3-3/4"×2-1/32") on the ceiling using the paper pattern (supplied) as a guide. (3) Run the wire through the mounting carrier and insert into the installation hole as shown in Fig. 1-234. Fig. 1-234 B (4) Fit securely into - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 196
7-21. Electrical Wiring CAUTION Be sure to do the wiring correctly (incorrect wiring will damage the equipment). Recommended wire diameter and allowable length for signal receiving unit wiring and its branch wiring: AWG #18, MAX 1,300 ft. Terminal board for indoor unit 1 remote control 2 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 197
receiving unit, refer to the instruction manual that came with the dedicated service check lines. 1. Operation Display Service connector 1. Specifications ALL• STANDBY lamp Bright Alternately Alternately Concurrent Concurrent Cause of Trouble No power supply or mis-wiring of signal receiving - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 198
7-24. Basic Wiring Diagram CAUTION Be sure to do the wiring correctly (incorrect wiring will damage the equipment). Remote Controller 12 Wire joint 12 Indoor unit No. 1 U1 U2 Inter-unit control wiring U1 U2 Outdoor unit : Ground (earth) 1 Wiring procedure Carry out the wiring according to - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 199
7-25. Wiring System Diagram for Group Control This diagram shows when several units (maximum of 8) are controlled by a signal receiving unit (main unit). In this case, a signal receiving unit can be connected at any indoor unit. 1. Specifications Wiring procedure Wire according to the diagram at - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 200
7-26. Wiring System Diagram for Multiple Remote Controllers 1. Specifications When installing multiple remote controllers This multiple system is used for operating the unit(s) at different positions. (A maximum of 2 signal receiving units can be installed.) Setting method To execute this control, - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 201
Run (1) Turn ON the remote power switch at least 12 hours before the test run in order to charge the crankcase heater. (2) Fully open the service valves on the gas-tube and liquid-tube sides. (3) Set the sliding switches on the inside of the wireless remote controller cover to the correct - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 202
is approximately 26 ft., however this distance is only a guide. The actual distance may vary somewhat depending on battery capacity and If normal operation is not possible, the lamps on the display will indicate the problem. Refer to "7-32. Diagnosis Table". (5) After the test run is completed, - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 203
Request that the customer be present at the time the test run is performed. Explain the Operating Instructions to the customer, and then have the customer actually operate the system. Be sure to pass the manual and warranty certificate to the customer. Verify that the AC 208 / 230 V wiring is not - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 204
7-31. When Setting Indoor Unit Control PCB Switch for Wall Mounted Indoor Unit 1. Specifications When using both the wired and wireless remote controller, refer to the procedure below. If this setting is not made correctly an alarm will occur. (The operation lamp on the display blinks.) This - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 205
7-32. Diagnosis Table Wired remote Indoor unit spcontroller dilay receiver lamp Nothing is displayed Nothing is displayed E 0 1 displayed Operating lamp E 0 2 displayed is blinking. E 0 9 displayed E 1 4 displayed E 0 4 displayed Cause 1:1 connection (single type) Group connection - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 206
8. HOW TO INSTALL THE TIMER WIRED REMOTE CONTROLLER NOTE Refer to the Instruction Manual attached to the Timer Remote Controller. 1. Specifications 1 1-198 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 207
2. PROCESSES AND FUNCTIONS 2-1. Room Temperature Control 2-2 2-2. Cold Draft Prevention (Heating Cycle 2-4 2-3. Automatic Fan Speed (Indoor Unit 2-5 2-4. Control Functions ...2-6 2-5. Outdoor Unit Control PCB 2-9 2-6. Outdoor Unit Control PCB (CR-CH4272R 2-10 2 2-1 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 208
2. Processes and functions 2-1. Room Temperature Control The unit adjusts room temperature by turning the outdoor unit's compressor ON and OFF. This process is controlled by the thermostat located in the remote control unit. The figures on this and the next pages show how each part of the system - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 209
2. Processes and functions (B) Heating REMOTE CONTROL SENSOR (Only for wireless remote controller) SET. +2 °F SETTING TEMP. SET. -2 °F THERMO. ON THERMO. ON THERMO. OFF THERMO. OFF THERMO. ON BODY SENSOR +2°F SET TEMP.+7 °F SHIFT -2°F THERMO. ON THERMO. OFF THERMO. ON THERMO. OFF THERMO. ON - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 210
2. Processes and functions 2-2. Cold Draft Prevention (Heating Cycle) The cold draft prevention function controls indoor fan speed so a strong draft of cold air will not blow out before the indoor heat exchange coils have warmed up. STANDBY shows on the remote controller when the indoor fan speed is - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 211
2. Processes and functions 2-3. Automatic Fan Speed (Indoor Unit) By pressing the FAN SPEED button on the remote controller, the fan speed can be set at one of four steps: AUTO., HI., MED., or LO. When set at AUTO. the indoor unit fan speed will be automatically adjusted to the room temperature as - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 212
2. Processes and functions 2-4. Control Functions Electronic control valve control Opening of the electronic control valve is controlled so that the appropriate operating conditions are maintained, based on the signal from each sensor (discharge temperature [TD], intake temperature [TS], outdoor - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 213
2. Processes and functions Overcurrent protection control (1) If the overcurrent protection circuit detects abnormal current, the compressor is stopped. (Error count = 1.) The compressor then restarts after 3 minutes. (2) If compressor start/stop is repeated 4 times (error count = 4), alarm "P26", - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 214
Defrost control Defrost control Defrost sequence Heating operation (25-minute mask) 1 Frost detection 2. Processes and functions Defrost start (reverse cycle defrost) • Operating frequency: 61.8 Hz Defrost in progress • Outdoor unit fan: OFF • Electronic control valve: step 300 • 4-way valve: - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 215
2-5. Outdoor Unit Control PCB (1) Layout Diagram (CR-CH4872R) 2. P2r.oPceroscseesssaensdafnudnfcutinocntsions Suction temperature (TS) sensor Heat exchanger temperature (C1) sensor Heat exchanger temperature (C2) sensor MDC Outdoor air temperature (TO) sensor Compressor discharge temperature (TD) - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 216
2-6. Outdoor Unit Control PCB (CR-CH4272R) (1) Explanation of Functions 2. Processes and functions S001 S002 2 S003 S005 Test (CN036) EXCT (CN026) Push-button switch (black): Automatic address setting switch • If the system address switch (S002: set to 0 at time of shipment) setting is other than - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 217
2. Processes and functions Terminal plug (CN015) Quiet mode (CN028) 3P plug (black): Terminal plug for the communications line • At the time of shipment from the factory, the short-circuiting socket (2P, black) is installed between pins 1 and 2 on the terminal plug (terminal = yes). • When central - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 218
- MEMO - 2-12 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 219
3. ELECTRICAL DATA 3-1. Indoor Units ...3-2 3-2. Outdoor Units ...3 -14 3 3-1 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 220
3-1. Indoor Units Concealed Duct Type : S-26PF2U6, S-36PF2U6 3. Electrical data 3 3-2 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 221
4-Way Cassette Type : S-26PU1U6, S-36PU1U6, S-42PU1U6 3. Electrical data 3 3-3 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 222
4-Way Cassette Type : S-26PU1U6, S-36PU1U6, S-42PU1U6 3. Electrical data 3 3-4 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 223
Wall Mounted Type : S-26PK1U6 3. Electrical data 3 3-5 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 224
Wall Mounted Type : S-26PK1U6 3. Electrical data 3 3-6 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 225
Ceiling Type : S-26PT1U6, S-36PT1U6, S-42PT1U6 3. Electrical data 3 3-7 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 226
Ceiling Type : S-26PT1U6, S-36PT1U6, S-42PT1U6 3. Electrical data 3 3-8 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 227
Low Silhouette Ducted Type : S-26PF1U6, S-36PF1U6 3. Electrical data 3 3-9 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 228
Low Silhouette Ducted Type : S-26PF1U6, S-36PF1U6 3. Electrical data 3 3-10 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 229
3 3-11 ELECTRIC CIRCUIT DIAGRAM POWER SUPPLY 208 / 230V 60Hz 1PH TERMINAL BOARD L1 R L2 W G INDOOR AIR TEMP. SENSOR (TA) BL t BL INDOOR HEAT EXCHANGER TEMP. SENSOR (E1) t BL BL INDOOR HEAT EXCHANGER TEMP. SENSOR (E2) t BL BL REMOTE CONTROLLER R1 W R2 BL TO THE OUTDOOR UNIT or INDOOR - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 230
Wall Mounted Type : S-26PK2U6 3. Electrical data 3 3-12 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 231
3 3-13 ELECTRIC CIRCUIT DIAGRAM POWER SUPPLY 208 / 230V 60Hz 1PH TERMINAL BOARD L1 R L2 W G FUSE F301 1 T5A L250V AC IN(BLK) 3 E CONTROL BOARD (MAIN) NOISE FILTER RECTIFICATION CIRCUIT CIRCUIT TOOL (BLK) DCM (WHT) 1 4 5 6 R BL W Y 1 OP1(YEL) 1 10 7 B INDOOR AIR TEMP. SENSOR (TA) t - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 232
3-2. Outdoor Units U-26PE1U6 3. Electrical data 3 3-14 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 233
U-26PE1U6 3. Electrical data 3 3-15 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 234
U-26PS1U6 3. Electrical data 3 3-16 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 235
U-26PS1U6 3. Electrical data 3 3-17 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 236
U-36PE1U6 3. Electrical data 3 3-18 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 237
U-36PE1U6 3. Electrical data 3 3-19 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 238
U-36PS1U6 3. Electrical data 3 3-20 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 239
U-36PS1U6 3. Electrical data 3 3-21 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 240
U-42PE1U6 3. Electrical data 3 3-22 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 241
U-42PE1U6 3. Electrical data 3 3-23 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 242
U-42PS1U6 3. Electrical data 3 3-24 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 243
U-42PS1U6 3. Electrical data 3 3-25 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 244
− MEMO − 3-26 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 245
4. SERVICE PROCEDURES 4-1. Meaning of Alarm Messages 4-2 4-2. Symptoms and Parts to Inspect 4-5 4-3. Details of Alarm Messages 4-8 4-4. Table of Thermistor Characteristics 4-16 4 4-1 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 246
of remote controller switch alarm display Possible cause of malfunction 4. Service procedures ON: Blinking: OFF: Wired remote control display Wireless unit detected Error in transmitting serial communications signal E17 trouble in the signal from another indoor unit Error in receiving - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 247
Possible cause of malfunction 4. Service procedures Wired remote control display Wireless remote controller Drain pump locked. P11 DC fan error. P12 Outdoor protection Discharge temperature trouble P03 High pressure switch or compressor motor thermal protector is activated. P04 Open - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 248
(2) LED Indicator Messages on Outdoor Control PCB 4. Service procedures LED 1 LED 2 Remarks Power ON sequence 1. No communication from indoor units in system 2. Communication received from 1 or more indoor units in system 3. Regular communication - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 249
4-2. Symptoms and Parts to Inspect 4. Service procedures Remote controller alarm display Alarm contents MAX (C1,C2) is 142°F or Recovery at restart 1. Refrigerant cycle protection trouble higher, the compressor stops overload operation one. The compressor restarts 2. Outdoor coil temperature - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 250
4. Service procedures Remote controller alarm display Alarm contents Judgment condition Clear condition Judgment and correction P29 Current detection Inverter stops after alarm is Recovery at restart 1. Stops immediately when circuit trouble detected. Alarm is output restarted. • AC - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 251
4. Service procedures Remote controller alarm display Alarm contents F31 EEPROM trouble Judgment condition Reading/writing failure stops after alarm is detected. Recovery at restart 1. Refrigerant cycle trouble, overload operation 2. Loose screws between HIC control PCB and radiating plate - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 252
Compressor does not run. Breakdown Motor current detection circuit trouble No Is power OK? Correct power line. Yes Is current detection No circuit wiring OK? Check and correct wiring. 4. Service procedures Are wiring and connector No connections OK? Yes Is compressor No OK - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 253
(2) [Alarm "P26"] HIC PCB trouble) IGBT short-circuit protection on inverter control (IPDU) PCB 4. Service procedures No Is power OK? Correct power line. Yes Are circuit wiring, connector No connections, and reactor connections OK? Yes Correct. Has filter PCB No - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 254
HIC-CH4872R (Type 42) 4. Service procedures HIC-CH2672R (Type 26, 36) Resistance Between terminals HIC + HIC - HIC + more 200 kΩ or more 200 kΩ or more 4 (3) [Alarm "E31"] (communications trouble within unit) IGBT short-circuit protection Is "E31" displayed even after No the power voltage - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 255
Outdoor unit fan motor drive circuit trouble 4. Service procedures Are connectors CN003 and or ∞ (open) 4 Yes Fan motor is OK; outdoor unit control PCB has failed. → Replace. Fan motor trouble → Replace. Note: In the case of a GND circuit failure inside the motor, the results of the above - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 256
(5) [Alarms "F04," "F06," "F07," "F08," "F12"] Sensor trouble 4. Service procedures Are connectors CN020, 021, 022, 023, and 024 (TD, TO, C1, C2, and No TS sensors) connected correctly to the outdoor unit control PCB? - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 257
hold the and buttons simultaneously for 4 seconds or longer. (2) T he unit No. "X-X" (main unit No.), item code "XX" (sensor address), and servicing monitor " " (sensor temperature) are displayed on the remote controller LCD display. (See Fig. 1 at right.) (3) P ress the temperature setting - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 258
. Maintenance func 20:30 (THU) 1. Outdoor unit error data 2. Service contact 3. RC setting mode 4.Test run Sel. Page [ ] Confirm 01 0028 02 0026 Scroll Refer the information by pressing the or button. 4. Service procedures Sensor info. Unit no. 1-1 Scroll Code no. 00 01 02 20:30 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 259
4. Service procedures Sensor Temperature Display Function (Displayed both when operating and stopped) 3 "Xtu-rXe"s(.main unit No.), item code " " 2 (sensor address), and servicing monitor " " ture) are displayed on the remote ˃ ˃ (1) - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 260
4. Service procedures Check Pin Short-circuit the cooling check pin (or heating check pin) on the outdoor unit control PCB to perform the control described below. 1. - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 261
5. OUTDOOR UNIT MAINTENANCE REMOTE CONTROL In the case of CZ-RTC2 5-1. Overview ...5-2 5-2. Functions ...5-2 5-3. Normal Display Operations and Functions 5-3 5-4. Monitoring Operations: Display of Indoor Unit and Outdoor Unit Sensor Temperatures ...5-6 5-5. Monitoring the Outdoor Unit Alarm History - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 262
No:CV6231785082) Remote controller Outdoor unit control PCB Indoor unit Indoor unit Remote controller Remote controller * The special service checker wiring is required in order to connect the outdoor unit maintenance remote controller to the outdoor unit PCB. * Even when the outdoor - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 263
checker wiring to the outdoor unit PCB. The connection is shown in the figure below. RC (3P, blue) PCB connector (3P, blue) Special service checker wiring Outdoor unit PCB Relay connector (2P, white) Remote controller Assy * It is not necessary to disconnect the communications line in the - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 264
5. Outdoor unit maintenance remote control Display (functions) • Use the temperature setting and buttons to change the item code. Item code Display contents Remarks 00 (1) Outdoor unit alarm contents (code): OFF when normal Blinking 8-alarm code display at pre-trip, LED (2) At initial status - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 265
5. Outdoor unit maintenance remote control *2: 7-segment, 4-digit display for remote controller timer display The connected unit Nos. are displayed as shown below, using the 7-segment 4-digit ( ) display and the colon. Display for unit Nos. 1 - 20 Not lit 1 34 2 Not lit 6 89 7 Not lit 11 13 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 266
> (1) Press and hold the button and button simultaneously for 4 seconds or longer to switch to temperature monitor mode. During temperature monitoring, "Service Monitor" is lit. (The display and operations are the same as when monitor mode is started from the unit remote controller.) (2) Press - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 267
hold the button and button simultaneously for 4 seconds or longer to change to outdoor unit alarm history mode. During the alarm history display, "Service Check" is lit. The display and operations are the same as the monitoring of the alarm device (3) history that is performed using the unit - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 268
List of Item Codes 5. Outdoor unit maintenance remote control Item code Parameter 01 Control system schedule Do not set 02 Control system schedule Do not set 03 Control system schedule Do not set 04 Snowfall sensor operation 0 = No sensor, control performed 1 = No sensor, control not - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 269
Setting mode 2 5. Outdoor unit maintenance remote control (1) Press and hold the button, button, and button simultaneously for 4 seconds or longer. (2) Use the temperature setting and buttons to change the item code. The item codes and setting data are shown in the table - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 270
List of Item Codes Item code 80 Refrigerant type 81 Outdoor unit capacity* 82 Control system schedule 83 Control system schedule 84 3-phase or single-phase 85 Power frequency 86 Control system schedule 87 Control system schedule 88 Control system schedule 89 Crank case heater control 8A Control - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 271
CZ-RTC4 Inter-unit control wiring Interface for outdoor unit Outdoor unit maintenance control PCB remote controller Remote controller Ass'y (Servicing No.: " CV6231616171) Operation manual included in package. Indoor unit Indoor unit Remote controller Remote controller l The special - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 272
5-8. Functions n Functions on the ordinary display 5. Outdoor unit maintenance remote control (1) Functions: Button operations can be used to perform the following functions. • Start/stop of all indoor units • Switching between cooling and heating • Test run of all indoor units • Double-speed - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 273
controller CZ-RTC4, cut out the wire as shown in the figure below because the connector of the remote controller cannot be used directly. Special service checker wiring Relay connector (2P, WHT) RC Outdoor unit PCB (3P, BLU) CUT Top case (Back side) CZ-RTC4 (2P, WHT) Bottom case (Back side - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 274
l All units start/stop (Fig. 3) 5. Outdoor unit maintenance remote control The (Start/Stop operation) button can be used to start and stop all the indoor units. • The LED illuminates if any indoor units is operating. LED • The LED blinks if an alarm at any of the operating - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 275
5. Outdoor unit maintenance remote control Display (functions) • Use the temperature setting and buttons to change the item code. À Item code Á Item Remarks 00 Outdoor unit alarm contents (code): OFF when normal Blinking 8-alarm code display at pre-trip, LED At initial status 01 No. of - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 276
 XX-YY R.C. Displays the outdoor unit sub-bus address which is currently selected. XX = Outdoor system address on main bus line (1 - 30) YY = Outdoor unit sub-bus address (1 - 4) "1" appears when there is only 1 outdoor unit. 5. Outdoor unit maintenance remote control Locations where À, Á and  - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 277
5. Outdoor unit maintenance remote control n Concerning the 7-segment, 4-digit display remote controller timer display The unit Nos. of connected units are indicated by four 7-segment digits ( ) and a colon. l Display of unit Nos. 1 − 20 OFF 1 34 2 5 ON OFF 6 89 7 10 ON OFF 11 13 14 12 OFF 16 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 278
5-10. Monitoring Operations: Display of Indoor Unit and Outdoor Unit Sensor Temperatures À Press and hold the (Check) button and buttons simultaneously for 4 seconds or longer to engage temperature monitor mode. During temperature monitoring, is illuminates. (The display - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 279
Display of unit No. 1 (main unit) 5. Outdoor unit maintenance remote control Indoor unit data Outdoor unit data Item code 02 03 04 05 06 07 08 09 0A 0b 0C 0d 0E 0F 10 11 12 13 14 15 19 Meaning of Code Indoor unit intake temp. Indoor unit heat exchanger temp. (E1) Indoor unit heat exchanger temp. - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 280
5. Outdoor unit maintenance remote control 5-11. Mounting the Outdoor Unit Alarm History : Display of Outdoor Unit Alarm History • D isplays outdoor unit alarms only. • C heck the indoor unit alarm histories separately using the indoor unit remote controllers or other control device. - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 281
6. Mode Settings 5-12. Setting Modes : Setting the Outdoor Unit EEPROM Setting mode 1 À Press and hold the (Check) button and (Ventilation) button simultaneously for 4 seconds or longer. Á Press the temperature setting and buttons to change the item code. The item codes - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 282
List of Item Codes 5. Outdoor unit maintenance remote control Item code Parameter 01 Control system schedule Do not set 02 Control system schedule Do not set 03 Control system schedule Do not set 04 Snowfall sensor operation 0 = No sensor, control performed 1 = No sensor, control not - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 283
List of Item Codes (continued) Item code 80 Refrigerant type 81 Outdoor unit capacity* 82 Control system schedule 83 Control system schedule 84 3-phase or single-phase 85 Power frequency 86 Control system schedule 87 Control system schedule 88 Control system schedule 89 Crank case heater control 8A - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 284
− MEMO − 5-24 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 285
6. TEST RUN 6-1. Preparing for Test Run 6-2 6-2. Caution ...6-3 6-3. Test Run Procedure 6-3 6-4. Items to Check Before the Test Run 6-4 6-5. Test Run Using the Remote Controller 6-4 6-6. Precautions ...6-5 6-7. Table of Self-Diagnostic Functions and Corrections (Type F2, U2, T2, K2, U1, K1, T1 - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 286
hot to the touch. (Fig. 6-1) (6) Both the gas and liquid tube service valves are open. If not, open them now. (Fig. 6-2) (7) Request that the customer be present for the trial run. Explain the contents of the instruction manual, then have the customer actually operate the system. (8) Be sure to give - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 287
for operation were made at the time of shipment. Only the correct combination of indoor and outdoor units can be used. This test run manual describes primarily the procedure when using the wired remote controller. 6-3. Test Run Procedure Recheck the items (see 6-4) to check before the test run - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 288
Diagnostic Functions and Corrections" on the next page, and correct the problem. (4) After the test run is completed, press the button 20:30 (THU) Maintenance func 20:30 (THU) 1. Outdoor unit error data 2. Service contact 3. RC setting mode 4.Test run Sel. Page [ ] Confirm Change the display - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 289
Request that the customer be present when the test run is performed. At this time, explain the operation manual and have the customer perform the actual steps. Be sure to pass the manuals and warranty certificate to the customer. Check that the AC 230 / 208 V power is not connected to the - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 290
6. Test run 6 6-6 6-76.-7T.aTbalbeleoof fSSeellf-DDiiaaggnnoostsictiFcuFncutniocntsioannsd CaonrdreCctoiornrsec(tXio, Tn,sU,(TKyTpyepeF) 2, U2, T2, K2, U1, K1, T1 and F1) Wired remote Indoor unit controller display receiver lamp Nothing is displayed Nothing is displayed E 0 1 displayed - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 291
6-8. Examples of Wiring Diagrams Basic wiring diagram 1 Single-type system Be careful to avoid miswiring when connecting the wires. (Miswiring will damage the units.) Power supply Single-phase 230 / 208 V 0 System address rotary switch (Set to "0" at the time of shipment.) Ground Outdoor unit - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 292
Basic wiring diagram 2 Group control (when a central control device is not used) 6. Test run Simultaneous-operation multi system A maximum of 8 indoor units can be connected to 1 remote controller. Set the system address (refrigerant tubing system address) before turning on the remote power switch - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 293
Setting the outdoor unit system addresses For basic wiring diagram 2 (Set the system addresses: 1, 2, 3...) Outdoor unit control PCB System address rotary switch (Set to "0" at time of shipment) 3 - 5HP System address rotary switch 0 System address 10s 20s DIPswitch ON ON System address - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 294
1. Keep pressing the , and buttons simultaneously for 4 or more seconds. The "Maintenance func" screen appears on the LCD display. 2. Press the or button to see each menu. If you wish to see the next screen instantly, press the or button. Select "9. - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 295
Indicating (marking) the indoor and outdoor unit combination number Indicate (mark) the number after automatic address setting is completed. 6. Test run (1) So that the combination of each indoor unit can be easily checked when multiple units are installed, ensure that the indoor and outdoor unit - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 296
" by pressing the or button. Then press the button. Code no. 01 02 32 6. Test run Maintenance func 20:30 (THU) 1. Outdoor unit error data 2. Service contact 3. RC. setting mode 4. Test run Sel. Page [ ] Confirm RC. setting mode Code no. 01 Sel. Next 20:30 (THU) Set data 0001 ITEM Main - Panasonic 26PEK2U6 | 26PEK2U6 Service Manual - Page 297
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85464849303004
REFERENCE NO
.
SM830203-04
TECHNICAL DATA & SERVICE MANUAL
Model No.
Outdoor Units
Remarks
Remarks
42
36
26
42
36
26
Type
Type
U
Single
U-26PE1U6
U-36PE1U6
U-42PE1U6
Cooling/Heating
U-26PS1U6
U-36PS1U6
U-42PS1U6
Cooling
Indoor Units
Nominal Capacity
Nominal Capacity
Indoor Units Type
Outdoor Units
4-Way Cassette
S-26PU1U6
S-36PU1U6
S-42PU1U6
with Wired Remote Controller: CZ-RTC2
with Wireless Remote Controller: CZ-RWSK1U
S-26PK1U6
Wall Mounted
Ceiling
S-26PT1U6
S-36PT1U6
S-42PT1U6
S-42PU2U6
with Wired Remote Controller: CZ-RTC2
with Wired Remote Controller: CZ-RTC2
S-36PF1U6
S-26PF1U6
Low Silhouette Ducted
U1
K1
T1
F1
F2
S-36PF2U6
S-26PF2U6
Concealed Duct
S-36PU2U6
S-26PU2U6
(CZ-36KPU3U)*
(CZ-36KPU3U)*
(CZ-36KPU3U)*
4-Way Cassette 36” × 36”
U2
K2
S-26PK2U6
Wall Mounted
T2
S-26PT2U6
Ceiling
Outdoor Unit
Shows S-26PU1U6
Shows U-26PE1U6
Indoor Unit
Order No. SM830203-11CE
* Panel (optional parts)
S-42PT2U6
S-36PT2U6