Panasonic CU-E18RKUA E12RKUA Service Manual
Panasonic CU-E18RKUA Manual
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- Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 1
SET CHECK CLOCK RESET Indoor Unit CS-E9RKUAW CS-E12RKUAW CS-E18RKUAW CS-E24RKUAW Outdoor Unit CU-E9RKUA CU-E12RKUA CU-E18RKUA CU-E24RKUA Destination USA Canada Please file and use this manual together with the service manual for Model No. CU-2E18NBU and CU-5E36QBU, Order No. PHAAM1111120A1 and - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 2
manual).........71 17.3 Remote Control Button 72 18. Troubleshooting Guide 73 18.1 Refrigeration Cycle System 73 18.2 Breakdown Self Diagnosis Function...........75 18.3 Error Code Table 76 18.4 Self-diagnosis Method 78 19. Disassembly and Assembly Instructions ... 107 19.1 CS-E9RKUAW CS - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 3
these important contents are related to safety. The meaning of each indication used is as below. Incorrect installation or servicing due to ignoring of the instruction will cause harm or damage, and the seriousness is classified by the following indications. WARNING CAUTION This indication shows - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 4
21. After completion of installation or service, confirm there is no leakage of other parts except original parts describe in catalog and manual. 25. Using of refrigerant other than the Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 5
2. Specification Cooling Heating Model Indoor Outdoor CS-E9RKUAW CU-E9RKUA CS-E12RKUAW CU-E12RKUA Performance Test Condition ARI ARI Power Supply Phase, Hz V Single, 60 208 230 Single, 60 208 230 Min. Mid. Max. Min. Mid. Max. Min. - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 6
Row x Stage x FPI Size (W x H x L) inch Air Filter Material Type Power Supply Power Supply Cord A Thermostat Protection Device CS-E9RKUAW CU-E9RKUA Propeller PP DC (8 poles) - 40 C: 830 H: 780 0.6 (1.3) Cooling : 6.28 (222) Heating : 7.08 (250) Cooling : 7.40 (261) Heating - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 7
Model Indoor Outdoor CS-E9RKUAW CU-E9RKUA CS-E12RKUAW CU-E12RKUA DRY BULB WET BULB DRY BULB WET BULB Indoor Operation Range (Cooling) (°F / °C) Maximum Minimum 89.6 / 32 60.8 / 16 73.4 / 23 51.8 / 11 89.6 / 32 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 8
Cooling Heating Model Indoor Outdoor CS-E18RKUAW CU-E18RKUA CS-E24RKUAW CU-E24RKUA Performance Test Condition ARI ARI Power Supply Phase, Hz V Single, 60 208 230 Single, 60 208 230 Min. Mid. Max. Min. Mid. Max. Min. - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 9
Model Indoor Outdoor CS-E18RKUAW CU-E18RKUA CS-E24RKUAW CU-E24RKUA Type Propeller Propeller Material PP PP Outdoor Fan Motor Type DC Motor (8 poles) DC Motor (8 poles) Input Power W - - Output Power Speed Hi Moisture Removal - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 10
Model Indoor Outdoor CS-E18RKUAW CU-E18RKUA CS-E24RKUAW CU-E24RKUA DRY BULB WET BULB DRY BULB WET BULB Indoor Operation Range (Cooling) (°F / °C) Maximum Minimum 89.6 / 32 60.8 / 16 73.4 / 23 51.8 / 11 89.6 / 32 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 11
depletion substances refrigerant (R410A) Long Installation Piping o CS/CU-E9/12RK, long piping up to 65 feet (20 meters) o CS/CU-E18/24RK, long piping up to 100 feet (30 meters mode to reach the desired room temperature quickly Serviceability Improvement o Breakdown Self Diagnosis function 11 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 12
4.1 Indoor Unit Aluminium Fin Front Panel Auto OFF/ON button Air Filters Human activity sensor Horizontal Airflow Direction Louver • Manually adjustable (E9RK and E12RK). Air Purifying Filter POWER TIMER ECONAVI AUTO COMFORT POWERFUL QUIET Remote control receiver and Indicator Vertical - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 13
5. Dimensions 5.1 Indoor Unit 5.1.1 CS-E9RKUAW CS-E12RKUAW Air intake direction (8-7/16) 8-7/16 11-7/16 2-13/32 1-49/64 Left piping hole Air outlet - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 14
11-7/16 2-13/32 1-49/64 5.1.2 CS-E18RKUAW CS-E24RKUAW (9-15/32) Air intake direction 9-15/32 Left piping hole Air outlet direction 1/32~1/16 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 15
5.2 Outdoor Unit 5.2.1 CU-E9RKUA CU-E12RKUA Space necessary for installation 3-7/8 3-7/8 39-3/8 1 (4-1/8) Anchor > 1/2 11-13/32 (2-3/4) (2-3/8) (3/4) 21-9/32 Unit : inch 5.2.2 CU-E18RKUA CU-E24RKUA Space necessary for installation 3-7/8 3-7/8 39-3/8 1-5/64 (5-5/ - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 16
6. Refrigeration Cycle Diagram 6.1 CU-E9RKUA CU-E12RKUA INDOOR INTAKE TEMP. SENSOR PIPE TEMP. SENSOR LIQUID SIDE 2-WAY VALVE OUTDOOR DISCHARGE MUFFLER EXPANSION VALVE STRAINER INTAKE TEMP. SENSOR PIPE TEMP. SENSOR HEAT - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 17
6.2 CU-E18RKUA CU-E24RKUA INDOOR OUTDOOR INTAKE TEMP. SENSOR PIPE TEMP. SENSOR 1 PIPE TEMP. SENSOR 2 LIQUID SIDE RECEIVER EXPANSION VALVE STRAINER 2-WAY VALVE INTAKE TEMP. SENSOR PIPE TEMP. - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 18
7. Block Diagram 7.1 CS-E9RKUAW CU-E9RKUA CS-E12RKUAW CU-E12RKUA 18 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 19
7.2 CS-E18RKUAW CU-E18RKUA CS-E24RKUAW CU-E24RKUA 19 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 20
8. Wiring Connection Diagram 8.1 Indoor Unit 8.1.1 CS-E9RKUAW CS-E12RKUAW TERMINAL BOARD BL 1 2 3 R TO TEMP. W OUTDOOR FUSE UNIT 102°C (3A) AC306 (BLK) FUSE301 T3.15A L250V AUTO SW (SW01) AC303 (WHT) AC304 (RED) NOISE - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 21
8.1.2 CS-E18RKUAW CS-E24RKUAW TERMINAL BOARD 1 BL 2 3 R TO TEMP. W OUTDOOR FUSE UNIT 102°C (3A) AC306 (BLK) FUSE301 T3.15A L250V AUTO SW (SW01) AC303 (WHT) AC304 (RED) NOISE - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 22
8.2 Outdoor Unit 8.2.1 CU-E9RKUA CU-E12RKUA 22 POWER SUPPLY TO INDOOR UNIT L1 L2 1 2 3 (BLACK) (BLACK) (RED) WHT RED TERMINAL BOARD REACTOR GRY GRY ELECTRONIC-MAGNETIC COIL (EXPANSION VALVE) M Resistance - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 23
8.2.2 CU-E18RKUA CU-E24RKUA 23 POWER SUPPLY TO INDOOR UNIT REACTOR YLW/GRN GRN GRN L1 L2 TERMINAL BOARD TERMINAL BOARD 1 BLK WHT WHT BLK 23 RED GRY 2 2 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 24
9. Electronic Circuit Diagram 9.1 Indoor Unit 9.1.1 CS-E9RKUAW CS-E12RKUAW TERMINAL BOARD 1 BL 2 3 R TO TEMP. OUTDOOR FUSE W UNIT 102°C (3A) AC306 (BLK) FUSE301 T3.15A L250V AUTO SW (SW01) AC303 (WHT) AC304 (RED) NOISE - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 25
9.1.2 CS-E18RKUAW CS-E24RKUAW TERMINAL BOARD 1 BL 2 3 R TO TEMP. OUTDOOR FUSE W UNIT 102°C (3A) AC306 (BLK) FUSE301 T3.15A L250V AUTO SW (SW01) AC303 (WHT) AC304 (RED) NOISE - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 26
9.2 Outdoor Unit 9.2.1 CU-E9RKUA CU-E12RKUA 26 POWER SUPPLY TO INDOOR UNIT L1 L2 1 2 3 (BLACK) (BLACK) (RED) TERMINAL BOARD REACTOR ELECTRONIC-MAGNETIC COIL (EXPANSION VALVE) M HEATER FUSE 102 T3.15A - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 27
9.2.2 CU-E18RKUA CU-E24RKUA 27 POWER SUPPLY TO INDOOR UNIT REACTOR YLW/GRN GRN GRN YLW/GRN L1 L2 TERMINAL BOARD TERMINAL BOARD 1 2 3 BLK WHT WHT BLK RED - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 28
10. Printed Circuit Board 10.1 Indoor Unit 10.1.1 Main Printed Circuit Board 10.1.2 JP1 (Random Auto Restart enable/disable) Indicator Printed Circuit Board CN-FM CN-RMT CN-STM2 (E18/24RKUAW only) CN-STM1 CN-MSENS CN-DISP CN-TH CN-DISP 28 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 29
10.1.3 Comparator Printed Circuit Board CN-SENS1 CN-MSENS CN-SENS2 29 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 30
10.2 Outdoor Unit 10.2.1 Main Printed Circuit Board 10.2.1.1 CU-E9RKUA CU-E12RKUA FG1 CN-DCFM CN5 CN4 CN-STM CN-TANK CN-TH CN-HOT AC-BLK AC-WHT DATA CURRENT TRANSFORMER (CT) POWER TRANSISTOR (IPM) 30 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 31
10.2.1.2 CU-E18RKUA CU-E24RKUA CN-TH1 CN-EV CN-DIS CN-HT CN-HOT AC-BLK AC-WHT CURRENT TRANSFORMER (CT) DC-FMG CN-S CN-COM CN-FM1 DC-FM1 POWER TRANSISTOR (IPM) 31 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 32
10.2.2 Noise Filter Printed Circuit Board 10.2.2.1 CU-E18RKUA CU-E24RKUA 32 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 33
11. Installation Instruction (E9RK and E12RK) 11.1 Select the Best 49.2 ft (15 m) 9.8 ft 65.6 ft (3 m) (20 m) 0.2 oz/ft (20 g/m) 24.6 ft (7.5 m) Example: For E9RKUAW If the unit is installed at 32.8 ft (10 m) distance, the quantity of additional refrigerant should be 1.64 oz (50 g) .... (32.8 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 34
strength of INDOOR unit installation, it is highly recommended to locate " " at 5 position as shown. 9 17/32" (241.5 mm) 5 1/16" (128 mm) Model E9RKUAW, E12RKUAW or Dimension 1 2 3 4 5 6 19 9/32" 3 7/32" 17 9/32" 17" 1 11/16" 3 3/4" (490 mm) (82 mm) (439 mm) (432 mm) (43 mm) (95 mm - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 35
the bottom unit, and pull it slightly towards you to disengage the hooks from the unit. Insert the connection cable (720-38/40"m- 3mAb)5/o32u"t Guide surface Connection cable Connection cable Gas side piping Liquid side piping Drain hose (This can be used for left rear piping and bottom piping - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 36
Replace the drain hose Rear view for left piping installation Drain cap Drain hose Drain hose Connection cable Adjust the piping slightly downwards. • How to pull the piping and drain hose out, in case of embedded piping. Apply putty or caulking material to seal the wall opening. M3o7re13th/ - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 37
11.2.5 Wiring Stripping and connecting requirement Wire stripping 13/32" ± 1/16" (10±1 mm) No loose strand when inserted WARNING RISK OF FIRE JOINING OF WIRES MAY CAUSE OVERHEATING AND FIRE. Do not joint wires Indoor/outdoor connection terminal board 7/32" (5 mm) or more (gap between wires) - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 38
When installing at roof, please consider strong wind and earthquake. Please fasten the installation stand firmly with bolt or nails. A B C D Model A B C D E9RKUA, E12RKUA 22-7/16" (570 mm) 4-1/8" 23/32" (105 mm) (18.5 mm) 12-19/32" (320 mm) 11.3.2 Connect the Piping 11.3.2.1 Connecting - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 39
pipe) Liquid and Gas side of CS-E9RKUAW Torque Wrench for Flare Nut Liquid side of CS-E12RKUAW Packing Pipe Size Reducer Flare the vacuum pump. 5. Disconnect the vacuum pump house from the service port of the 3-way valve. 6. Tighten the service port caps of the 3-way valve at a torque of 13 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 40
cover (Metal and Resin) and the top panel to the original position with the screws. 11. For wire stripping and connection requirement, refer to instruction 11.2.5 of indoor unit. WARNING This equipment must be properly earthed. Earth lead wire shall be Yellow/Green (Y/G) in colour and shall be - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 41
12. Installation Instruction (E18RK and E24RK) 12.1 Select the Best Location 12.1.1 Indoor Unit Do not install the unit in excessive oil fume area such as kitchen, workshop - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 42
12.2 Indoor Unit 12.2.1 How to Fix Installation Plate The mounting wall shall be strong and solid enough to prevent it from the vibration. Wall More than 1 Wall More than 1 Wall Indoor unit 2 screw More than 2 3 4 Measuring Tape 9 17/32" (241.5 mm) 5 1/16" (128 mm) 5 1/16" (128 mm) 6 5 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 43
the bottom unit, and pull it slightly towards you to disengage the hooks from the unit. Insert the connection cable (720-38/40"m- 3mAb)5/o32u"t Guide surface Connection cable Connection cable Gas side piping Liquid side piping Drain hose (This can be used for left rear piping and bottom piping - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 44
Replace the drain hose Rear view for left piping installation Drain cap Drain hose Drain hose Connection cable Adjust the piping slightly downwards. • How to pull the piping and drain hose out, in case of embedded piping. Apply putty or caulking material to seal the wall opening. M4o5(r1e91/ - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 45
12.2.5 Wiring Stripping and connecting requirement Wire stripping 13/32" ± 1/16" (10±1 mm) No loose strand when inserted WARNING RISK OF FIRE JOINING OF WIRES MAY CAUSE OVERHEATING AND FIRE. Do not joint wires Indoor/outdoor connection terminal board 7/32" (5 mm) or more (gap between wires) - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 46
12.3 Outdoor Unit 12.3.1 Install the Outdoor Unit After selecting the best location, start installation according to indoor/outdoor unit installation diagram. 1 Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut ø13/32" (ø10 mm). 2 When installing at roof, please consider - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 47
Flare Nut and Pipe Size Reducer Applicable to Gas side of CS-E18RKUA CS-E24RKUA 12.3.2.4 Gas Leak Checking Pressure test to system to the vacuum pump. 5. Disconnect the vacuum pump house from the service port of the 3-way valve. 6. Tighten the service port caps of the 3-way valve at a torque of 13 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 48
(Metal and Resin) and the top panel to the original position with the screws. 11. For wire stripping and connection requirement, refer to instruction 12.2.5 of indoor unit. WARNING This equipment must be properly earthed. Earth lead wire shall be Yellow/Green (Y/G) in colour and longer than - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 49
by measuring the temperature of the environment and performing temperature shifting. The compressor at outdoor unit is operating following the frequency instructed by the microcomputer at indoor unit that judging the condition according to internal setting temperature and intake air temperature. 13 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 50
Fh, RC RC RC RC Fhmin, RC QuietLo Thermo Off, Hot start Thermo Off E9RKUAW rpm 1210 1120 1010 910 810 710 610 550 540 E12RKUAW rpm 1350 1230 1110 1000 970 690 580 E24RKUAW rpm 1500 1400 1320 1240 1160 1090 1000 690 580 E9RKUAW rpm 1340 1250 1140 1040 930 830 730 570 560 E12RKUAW rpm 1450 1380 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 51
13.3 Indoor Fan Motor Operation 13.3.1 Basic Rotation Speed (rpm) Manual Fan Speed [Cooling, Dry] o Fan motor's number of rotation is determined according to remote control setting. Remote control ○ ○ ○ ○ ○ Tab Hi Me+ Me Me- Lo [Heating] o - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 52
using remote control). 13.5.1 Vertical Airflow 13.5.1.1 CU-E9RKUA CU-E12RKUA Operation Mode Airflow Direction Heating Cooling Soft Dry A Auto with Heat Exchanger Temperature B C Manual Auto Manual Auto Manual 13.5.1.2 CU-E18RKUA CU-E24RKUA Vane angle (°) 1 2 3 4 5 20 57 32 20 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 53
13.5.3 Horizontal Airflow (CU-E18RKUA CU-E24RKUA) Automatic horizontal airflow direction Indoor Heat Exchanger Temperature Figure 1 104.0°F 0° Top View 1 5 2 4 3 Figure 2 Manual vertical airflow direction can be set using remote control; the angles of the vane are as stated below and - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 54
changed from normal setting to quiet setting of respective fan speed. This is to reduce sound of Hi, Me, Lo for 3dB. o Fan speed manual Manual fan speed for quiet operation is -1 step from setting fan speed. 13.8 Powerful Mode Operation When the powerful mode is selected, the internal setting - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 55
13.10 Auto Restart Control When the power supply is cut off during the operation of air conditioner, the compressor will re-operate within three to four minutes (there are 10 patterns between 2 minutes 58 seconds and 3 minutes 52 seconds to be selected randomly) after power supply resumes. This - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 56
2. Circuit Abnormal (Fix Output Lo) a. Abnormal judgment start condition. After ECONAVI and AUTO COMFORT Sensor unit power ON, and after pressed 70 seconds. b. Control content. Judge ECONAVI and AUTO COMFORT Sensor power level every 100ms. c. Abnormal Judgment condition. When ECONAVI and AUTO - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 57
ECONAVI Start condition. Press ECONAVI button. ECONAVI Stop condition. Press ECONAVI button again. OFF Timer activates. Press OFF/ON button to turn off the air conditioner. Press AUTO OFF/ON button to turn off the air conditioner. Press POWERFUL/QUIET button. AUTO COMFORT Start - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 58
13.12.1 Human Activity Sensor Check Mode To enable Human Activity sensor abnormality check mode, during ECONAVI operation ON: Remote control normal mode Press continously for 5s SET SET Transmit ECO demo code and after 30 seconds return to normal mode. TEMP TEMP SET Transmit sunlight sensor - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 59
14. Operation Control (For Multi Split Connection) During multi split connection, indoor unit's operation controls are same with single split connection unless specified in this chapter. 14.1 Cooling operation 14.1.1 Thermostat control Capability supply to indoor unit is OFF (Expansion valve - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 60
14.4 Automatic Operation (For Multi Split Connection Only) This mode can be set using remote control and the operation is decided by remote control setting temperature, remote control operation mode, indoor intake and outdoor air temperature. During operation mode judgment, indoor fan motor ( - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 61
total running current (AC) exceeds X value, the frequency instructed for compressor operation will be decreased. If the running current , compressor will be stopped immediately for 3 minutes. Model A Cool (X) B C Heat (X) Y E9RKUA 3.89 A 3.28 A 3.28 A 5.27 A 15.01 A E12RKUA 6.55 A 6.10 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 62
15.1.5 Compressor Overheating Prevention Control Instructed frequency for compressor operation will be regulated by compressor discharge temperature. The changes of frequency are as below. If compressor discharge temperature exceeds 224.6°F, compressor - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 63
15.2 Protection Control For Cooling & Soft Dry Operation 15.2.1 Outdoor Air Temperature Control The maximum current value is regulated when the outdoor air temperature rise above 57.2°F in order to avoid compressor overloading. 101.3°F Compressor ON Compressor OFF 99.5°F Outdoor Air - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 64
15.2.5 Dew Prevention Control 1 To prevent dew formation at indoor unit discharge area. This control will be activated if: o Outdoor air temperature and Indoor pipe temperature judgment by microcontroller is fulfilled. o When Cooling or Dry mode is operated more than 20 minutes or more. This - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 65
15.2.6.3 Overload Protection Control The compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown below. If the heat exchanger temperature exceeds 140.0°F, compressor will stop. 140°F 131°F OFF Frequency Reduced Frequency Limited 120.2°F Free - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 66
cycle and return back to the outdoor unit. 16.1.3 Total Running Current Control When the outdoor unit total running current (AC) exceeds X value, the frequency instructed for compressor operation will be decreased. If the running current does not exceed X value for 5 seconds, the frequency - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 67
16.1.5 Compressor Overheating Prevention Control Instructed frequency for compressor operation will be regulated by compressor discharge temperature. The changes of frequency are as below. If compressor discharge temperature exceeds 233.6°F, compressor - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 68
The compressor will be stopped at outdoor air temperature ≤ -4°F. The unit still operate within the temperature range. -0.4°F Compressor ON -4°F Compressor OFF Outdoor Air Temperature 16.2.2 Cooling Overload Control Pipe temperature limitation / restriction. o Detects the outdoor pipe - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 69
16.2.6.2 Outdoor Air Temperature Control The Max current value is regulated when the outdoor air temperature rise above 57.2°F in order to avoid compressor overloading. The compressor will be stopped at outdoor air temperature ≤ -4°F. The unit still operate within the temperature range. -0.4°F - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 70
can be used to operate air conditioner with limited function if remote control is misplaced or malfunction. 2 TEST RUN OPERATION (FOR PUMP DOWN/SERVICING PURPOSE) The Test Run operation will be activated if the Auto OFF/ON button is pressed continuously for more than 5 seconds. A "beep" sound - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 71
Control Receiving Sound OFF/ON Mode is restarted. 17.2 Cooling Only Operation (Single connection Only, Multi connection please refer to Multi outdoor manual) 17.2.1 How to activate and deactivate Cooling Only Operation AUTO SW is pressed 5s 8s 11s 16s 21s 26s 36s Emergency Operation Forced - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 72
17.3 Remote Control Button 17.3.1 SET Button To check remote control transmission code and store the transmission code to EEPROM o Press "Set" button continuously for 10 seconds by using pointer o Press "Timer Set" button unit a "beep" sound is heard as confirmation of transmission code change. 17 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 73
18. Troubleshooting Guide 18.1 Refrigeration Cycle System In order to diagnose malfunctions, make sure that there are no electrical problems before inspecting the refrigeration cycle. Such problems include insufficient insulation, problem with the power source, malfunction of a compressor and a fan. - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 74
18.1.1 Relationship between the condition of the air conditioner and pressure and electric current Cooling Mode Heating Mode Condition of the air conditioner Low Pressure High Pressure Electric current during operating Low Pressure High Pressure Electric current during operating - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 75
18.2 Breakdown Self Diagnosis Function 18.2.1 Self Diagnosis Function (Three Digits Alphanumeric Code) Once error occurred during operation, the unit will stop its operation, and Timer LED blinks. Although Timer LED goes off when power supply is turned off, if the unit is operated under a - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 76
18.3 Error Code Table Diagnosis Abnormality / display Protection control Abnormality Judgement Protection operation Problem Check location H00 No memory of failure - Normal operation - - H11 Indoor/outdoor abnormal communication After operation for Indoor fan only 1 minute - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 77
Diagnosis Abnormality / display Protection control Abnormality Judgement Protection operation Problem Check location H59 ECONAVI sensor abnormality Continuous for 25s H64 Outdoor high pressure Continuous for 1 sensor abnormality minutes - ECOANVI sensor open or • ECONAVI sensor ( - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 78
wires between the indoor and outdoor units. Indoor unit-outdoor unit signal transmission error due to disturbed power supply waveform. Troubleshooting When abnormality indication starts again. Check the indoor-outdoor units' connection wires. For safety reason and to prevent component breakdown - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 79
. Indoor-outdoor unit signal transmission error due to breaking of wire 3 in the connection wires between the indoor and outdoor units. Troubleshooting When abnormality indication starts again. Check the indoor and outdoor unit connection wires. Is there any wiring error? NO Check indoor and - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 80
intake air temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB. Troubleshooting When abnormality indication starts again. Check the connector connection: Turn off the power. Check the connector connection. Is the - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 81
compressor temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB. Troubleshooting When abnormality indication starts again. Check the connector connection: Turn off the power. Check the connector connection. Is the - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 82
value for 3 minutes. Malfunction Caused Lack of gas. Broken CT (current transformer). Broken Outdoor PCB. Troubleshooting When abnormality indication starts again. Refer to Service Manual Technical Graph for Temp vs Current and Pressure. For safety reason and to prevent component breakdown - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 83
due to breaking of fan motor lead wires. Operation stops due to Hall IC malfunction. Operation error due to faulty indoor unit PCB. Troubleshooting When abnormality indication starts again. Turn off power supply and rotate fan by hand. Does fan rotate smoothly? YES Turn power supply on and - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 84
heat exchanger temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB. Troubleshooting When abnormality indication starts again. Check the connector connection: Plug out connector from the indoor unit PCB. Measure the - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 85
outdoor air temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB. Troubleshooting When abnormality indication starts again. Check the connector connection: Turn off the power. Check the connector connection. NO Is - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 86
pipe temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB. Troubleshooting When abnormality indication starts again. Check the connector connection: Turn off the power. Check the connector connection. Is the - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 87
pipe temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB. Troubleshooting When abnormality indication starts again. Check the connector connection: Turn off the power. Check the connector connection. Is the - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 88
exchanger temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB. Troubleshooting When abnormality indication starts again. Check the connector connection: Turn off the power. Check the connector connection. Is the - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 89
Malfunction Caused Wrong models interconnected. Wrong indoor unit and outdoor unit PCBs used. Indoor unit or outdoor unit PCB defective. Troubleshooting When abnormality indication starts again. Check indoor and outdoor units model number. For safety reason and to prevent component breakdown - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 90
gas pipe temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB. Troubleshooting When abnormality indication starts again. Check the connector connection: Turn off the power. Check the connector connection. Is the - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 91
liquid pipe temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB. Troubleshooting When abnormality indication starts again. Check the connector connection: Turn off the power. Check the connector connection. Is the - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 92
continuously for 25 seconds during ECONAVI or AUTO COMFORT operation. Feedback signal is detected during ECONAVI or AUTO COMFORT off. Troubleshooting When abnormality indication starts again. Check the connector connection: Turn off the power. Check the connector connection. Is the connector - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 93
(Light Sensor Abnormality) Malfunction Decision Conditions Feedback signal of light sensor. Malfunction Caused Feedback value is 0 VDC continuously. Troubleshooting When abnormality indication starts again. Check the connector connection: Turn off the power. Check the connector connection. Is - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 94
due to breaking of fan motor lead wires. Operation stops due to Hall IC malfunction. Operation error due to faulty outdoor unit PCB. Troubleshooting When abnormality indication starts again. Turn off power supply and rotate fan by hand. Does fan rotate smoothly? YES Turn power supply on and - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 95
in heating mode. Malfunction Caused Indoor heat exchanger thermistor. Clogged air filter or heat exchanger. Over-bent pipe (liquid side). Troubleshooting When abnormality indication starts again. Check the indoor unit intake air filter. For safety reason and to prevent component breakdown - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 96
motor. Refrigerant shortage (refrigerant leakage). Clogged expansion valve or strainer. Faulty indoor pipe temperature sensor. Faulty indoor unit PCB. Troubleshooting When abnormality indication starts again. Check the air passage. Is there any short circuit? YES For safety reason and to - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 97
Indoor heat exchanger (pipe) thermistor 4-way valve malfunction Troubleshooting When abnormality starts again. Check the indoor pipe temperature thermistor: thermistor matches the value specified in its characteristic chart? YES Problem occurs in heating mode only? ● Defect in indoor pipe - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 98
corresponding indoor unit and H39 to other indoor unit(s). Malfunction Caused Wrong wiring connection Faulty sensor Faulty expansion valve Troubleshooting When F17 indication happens. Check the system wiring connection. For safety reason and to prevent component breakdown, always switch off - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 99
the DC level. When DC voltage detected is HIGH (391Vdc - 425Vdc), active LOW signal will send by the controller to turn OFF relay RY-C. Troubleshooting When abnormality indication starts again. Reset the error code and turn on the unit again. Is AC power supply normal fluctuation? YES Verify PFC - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 100
is low while the compressor is running at higher than the setting frequency. Malfunction Caused Lack of gas. 3-way valve close. Troubleshooting When F91 indication happens. Check 3 way valve. For safety reason and to prevent component breakdown, always switch off the power before remove and - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 101
running condition through the position detection circuit. Malfunction Caused Compressor terminal disconnect. Faulty Outdoor PCB. Faulty compressor. Troubleshooting When F93 indication happens. Check the U, V and W connector connection: - Turn OFF the power. - Check the U, V and W connector - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 102
rise due to defective outdoor heat exchanger thermistor. Outdoor heat exchanger temperature rise due to defective of outdoor unit PCB. Troubleshooting When abnormality indication starts again. Check the outdoor unit installation condition (during cooling or soft dry operation). Is there any - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 103
of IPM. IPM overheats due to defective IPM temperature sensor. Multi Models Only o Compressor OL connector poor contact. o Compressor OL faulty. Troubleshooting When F96 indication happens. Check the outdoor unit installation condition (during cooling or soft-dry operation). Is there any improper - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 104
compressor tank temperature sensor 2/3 way valve closed Refrigerant shortage (refrigerant leakage) Faulty outdoor unit PCB Faulty compressor Troubleshooting When F97 indication happens. Check the compressor tank temperature sensor. For safety reason and to prevent component breakdown - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 105
value being detected by current transformer (CT) with the compressor running. Malfunction Caused Excessive refrigerant. Faulty outdoor unit PCB. Troubleshooting When F98 indication happens. Get restarted and measure the input current. For safety reason and to prevent component breakdown - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 106
DC current peak due to defective power transistor(s). DC current peak due to defective outdoor unit PCB. DC current peak due to short circuit. Troubleshooting When abnormality indication starts again. Reset the error code and turn on the unit again. Is there a sound when compressor starts? NO - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 107
Disassembly and Assembly Instructions WARNING High Voltage is generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks. 19.1 CS-E9RKUAW CS-E12RKUAW 19 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 108
9. Pull out the main electronic controller and power electronic controller halfway. 10. Detach 3 or 4 connectors as labeled from the electronic controller. Then pull out main controller gently 8. Remove screw to remove terminal board complete. 7. Detach the CN-DISP connector then remove the - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 109
19.1.1.5 To remove cross flow fan and indoor fan motor Figure 7 14. Remove the screw that holding the cross flow fan and fan motor axis. 16. Remove the bearing by pulling it out gently 15. Remove the screw from the evaporator. Figure 8 17. Push the holdfast to the left and lift up the evaporator - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 110
Cross Flow Fan Figure 10 Reminder: To reinstall the cross flow fan, ensure cross flow fan is in line as shown in figure 10 110 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 111
capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks. 19.2 CS-E18RKUAW CS-E24RKUAW 19.2.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 19.2.1.1 To remove front grille 2. Remove - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 112
19.2.1.3 To remove discharge grille 11. Pull out to remove the drain hose from the discharge grille. 19.2.1.4 12. Then pull the discharge grille downward gently to dismantle it. Figure 5 To remove control board 13. Remove 4 screws holding the control board then pull out the control board. Figure - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 113
16. Remove the bearing by pulling it out gently. 15. Remove the screw from the evaporator. Figure 8 17. Push the holdfast to the left and lift up the evaporator. Evaporator Cross flow fan 18. Remove the cross flow fan from the unit by pulling it to the left and downward. Figure 9 19. Fan motor - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 114
19.3 Outdoor Electronic Controller Removal Procedure 19.3.1 CU-E9RKUA CU-E12RKUA Caution! When handling electronic controller, be careful of electrostatic discharge. 1 Remove the 3 screws of the Top Panel. 5 Remove the Control Board as follows: Screw - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 115
19.3.2 CU-E18RKUA CU-E24RKUA Caution! When handling electronic controller, be careful of electrostatic discharge. 1 Remove the 8 screws of the Top Panel. 4 Remove the Control Board. Screws Screws Release - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 116
. 20.1 Cool Mode Performance Data Unit setting: Standard piping length, Hi Fan, Cool mode at 60.8°F Voltage: 230V 20.1.1 CS-E9RKUAW CU-E9RKUA Rated frequency (compressor speed is fixed during forced heating or cooling for capacity measurement and diagnosis purpose) Indoor (°C / °F) Outdoor - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 117
TC SHC IP 11804 10978 1169 13026 6858 1184 10802 10694 1234 11892 8144 1257 9961 9861 1212 11126 4523 1321 20.1.4 CS-E24RKUAW CU-E24RKUA Rated frequency (compressor speed is fixed during forced heating or cooling for capacity measurement and diagnosis purpose) Indoor (°C / °F) DB WB 27 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 118
20.1.5 CS-E9RKUAW CU-E9RKUA Maximum Capacity Indoor (°C / °F) Outdoor (°C / °F) DB WB -20 7391 6873 829 8066 4892 792 6695 6628 850 7609 5365 842 6057 5996 768 6773 5034 864 20.1.6 CS-E12RKUAW CU-E12RKUA Maximum Capacity Indoor (°C / °F) Outdoor (°C / °F) DB WB -20 (-4) -10 (14) - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 119
1808 46 (114.8) TC SHC IP 11803 10740 1169 13024 6710 1184 10803 10695 1234 12014 8051 1290 10107 10006 1268 11332 4508 1387 20.1.8 CS-E24RKUAW CU-E24RKUA Maximum Capacity Indoor (°C / °F) DB WB 27 (80.6) 23 (73.4) 20 (68) 19 (66.2) 22 (71.6) 15.7 (60.26) 18.4 (65.12) 13.3 (55 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 120
20.2 Heat Mode Performance Data Unit setting: Standard piping length, Hi Fan, Heat mode at 86°F Voltage: 230V 20.2.1 CS-E9RKUAW CU-E9RKUA Rated frequency (compressor speed is fixed during forced heating or cooling for capacity measurement and diagnosis purpose) Indoor (°C / °F) DB 24 (75.2) 20 (68) - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 121
20.2.5 CS-E9RKUAW CU-E9RKUA Maximum Capacity Indoor (°C / °F) DB 24 (75.2) 20 (68) 16 (60.8) IP 14534 1525 14390 1491 15253 1466 23.9 (75.02) TC IP 15225 1424 16093 1393 15700 1369 20.2.6 CS-E12RKUAW CU-E12RKUA Maximum Capacity Indoor (°C / °F) DB 24 (75.2) 20 (68) 16 (60.8) -20 (-4) TC - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 122
Outlet Air (°F) 21. Service Data Service data provided are based on the air conditioner at 60.8°F, Hi fan - Compressor frequency: Rated for cooling operation - Piping length: 24.6ft - Voltage: 230V 21.1.1 CS-E9RKUAW CU-E9RKUA 230 64.5 64.0 63.5 63.0 62.5 62.0 61.5 61.0 60.5 60.0 59.5 59.0 -4 6 16 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 123
Outlet Air (°F) Current (A) Gas Side Piping Pressure (PSI) 21.1.2 CS-E12RKUAW CU-E12RKUA 230 62.0 61.5 61.0 60.5 60.0 59.5 59.0 58.5 58.0 57.5 57.0 -4 6 16 26 36 46 56 66 76 86 96 106 116 Outdoor - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 124
Outlet Air (°F) Current (A) Gas Side Piping Pressure (PSI) 21.1.3 CS-E18RKUAW CU-E18RKUA 230 68.0 66.0 64.0 62.0 60.0 58.0 56.0 54.0 52.0 -4 6 16 26 36 46 56 66 76 86 96 106 116 Outdoor Air Temperature (°F) 6.5 6.0 5.5 5.0 4.5 4.0 -4 6 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 125
Outlet Air (°F) Current (A) Gas Side Piping Pressure (PSI) 21.1.4 CS-E24RKUAW CU-E24RKUA 230 60.0 59.0 58.0 57.0 56.0 55.0 54.0 53.0 52.0 51.0 50.0 49.0 48.0 -4 6 16 26 36 46 56 66 76 86 96 106 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 126
: Standard piping length, forced heating at 86°F, Hi fan - Compressor frequency: Rated for Heating operation - Piping length: 24.6ft - Voltage: 230V 21.2.1 CS-E9RKUAW CU-E9RKUA Outlet Air (°F) Current (A) 230 102.0 100.0 98.0 96.0 94.0 92.0 90.0 88.0 86.0 84.0 82.0 -4 1 6 11 16 21 26 31 36 41 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 127
21.2.2 CS-E12RKUAW CU-E12RKUA Outlet Air (°F) Current (A) 110.0 108.0 106.0 104.0 102.0 100.0 98.0 96.0 94.0 92.0 90.0 88.0 -4 1 5.8 5.6 5.4 5.2 5.0 4.8 4.6 4.4 4.2 -4 1 420.0 400.0 380.0 360.0 340.0 320.0 300.0 280.0 260.0 -4 1 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 128
21.2.3 CS-E18RKUAW CU-E18RKUA Outlet Air (°F) Current (A) 230 106.0 104.0 102.0 100.0 98.0 96.0 94.0 92.0 90.0 88.0 -4 1 6 11 16 21 26 31 36 41 46 51 56 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 129
21.2.4 CS-E24RKUAW CU-E24RKUA Outlet Air (°F) Current (A) 122.0 120.0 118.0 116.0 114.0 112.0 110.0 108.0 106.0 104.0 102.0 -4 1 12.0 11.5 11.0 10.5 10.0 9.5 9.0 -4 1 520.0 500.0 480.0 460.0 440.0 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 130
.3 Piping Length Correction Factor The characteristic of the unit has to be corrected in accordance with the piping length. 21.3.1 CS-E9RKUAW CU-E9RKUA CS-E12RKUAW CU-E12RKUA Cooling Capacity Correction Factor 1.040 1.030 1.020 1.010 1.000 0.990 0.980 0.970 0.960 9.5 1.060 1.050 1.040 1.030 1.020 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 131
21.3.2 CS-E18RKUAW CU-E18RKUA CS-E24RKUAW CU-E24RKUA Cooling Capacity Correction Factor 1.020 1.010 1.000 0.990 0.980 0.970 0.960 0.950 9.5 1.010 1.000 0.990 0.980 0.970 0.960 9.5 230 19.5 29.5 39.5 49.5 59.5 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 132
22. Exploded View and Replacement Parts List 22.1 Indoor Unit 22.1.1 CS-E9RKUAW CS-E12RKUAW O/I 46 I/I 47 I/I 48 4 3 40 CWH55025J 45 CWH55051J 44 17 20 18 54 22 21 5 8 9 2 7 1 27 of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts. 132 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 133
BAG COMPLETE - INSTALLATION SCREW OPERATING INSTRUCTION INSTALLATION INSTRUCTION INSTALLATION INSTRUCTION REMOTE CONTROL HOLDER BAG QTY. 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 8 2 1 1 1 1 1 1 1 2 2 2 1 1 1 1 1 1 1 1 CS-E9RKUAW CWD50C1633 L6CBYYYL0055 CWH02C1076 CWH64K007 CWH551146 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 134
PART NAME & DESCRIPTION SHOCK ABSORBER ( L ) SHOCK ABSORBER ( R ) C.C.CASE AIR PURIFYING FILTER BAG COMPLETE (TUBE CONNECTOR) QTY. 1 1 1 1 1 CS-E9RKUAW CWG713386 CWG713387 CWG567355 CWD00C1141 CWH82C2030 (Note) All parts are supplied from PHAAM, Malaysia (Vendor Code: 00029488). "O" marked - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 135
22.1.2 CS-E18RKUAW CS-E24RKUAW O/I 46 I/I 47 I/I 48 4 3 40 CWH55025J 45 CWH55051J 17 20 18 22 21 54 37 2 5 8 9 7 38 39 41 42 44 1 27 6 The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts. 135 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 136
INSTRUCTION INSTALLATION INSTRUCTION INSTALLATION INSTRUCTION QTY. 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 1 1 2 3 3 1 1 1 1 1 1 CS +16CFJ CWH521227 CWH851173 CWH361098 CWH82C1705 CWF569756 CWF616730 CWF616731 CS-E24RKUAW CWB30C3967 ← CWT251033 ← ← ← CWA73C9159 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 137
51 SHOCK ABSORBER ( L ) 52 SHOCK ABSORBER ( R ) 53 C.C. CASE 54 AIR PURIFYING FILTER 55 BAG COMPLETE (TUBE CONNECTOR) QTY. 1 1 1 1 1 1 1 CS-E18RKUAW CWH361078 CWG861498 CWG713402 CWG713403 CWG567455 CWD00C1141 CWH82C2030 (Note) All parts are supplied from PAPAMY, Malaysia (Vendor Code - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 138
22.2 Outdoor Unit 22.2.1 CU-E9RKUA CU-E12RKUA 38 49 34 48 47 29 31 28 11 2 45 46 6 7 4 5 20 50 51 30 40 3 19 23 36 37 24 39 43 41 Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts. 138 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 139
) BAG BASE BOARD-COMPLETE SHOCK ABSORBER ( R ) SHOCK ABSORBER ( L ) C.C.CASE QTY. 1 1 2 1 4 1 1 1 3 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 CU-E9RKUA CWD50K2081A CWD541089 CWH551217 ARW6404AC CWH55252J CWH03K1014 CWH56053J 5RS102XHA21 CWH50077 CWH561096 CWB32C3394 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 140
SAFETY REF. NO. 50 51 PART NAME & DESCRIPTION SOUND PROOF MATERIAL SOUND PROOF MATERIAL QTY. 1 1 CU-E9RKUA CWG302292 CWG302569 (Note) All parts are supplied from PHAAM, Malaysia (Vendor Code: 00029488). "O" marked parts are recommended to be kept in stock. CU-E12RKUA ← ← REMARK 140 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 141
22.2.2 CU-E18RKUA CU-E24RKUA 35 31 34 30 5 6 10 8 9 19 52 33 25 51 21 3 20 4 11 45 28 41 14 50 49 40 39 The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts. 24 44 27 26 32 46 29 22 18 17 141 - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 142
46 CONTROL BOARD COVER 47 BAG 48 BASE BOARD-COMPLETE QTY. 1 3 1 3 1 1 3 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3 1 1 1 1 1 1 1 1 1 1 142 CU-E18RKUA CWD52K1228A CWH50055 5KD240XAF21 CWH561049 CWD541127 EHDS80CAC CWH551217 CWH551323 CWH00K1006 CWH561092 CWB32C3516 CWB051018J - Panasonic CU-E18RKUA | E12RKUA Service Manual - Page 143
REF. NO. 49 50 51 52 PART NAME & DESCRIPTION SHOCK ABSORBER ( R ) SHOCK ABSORBER ( L ) C.C. CASE ELECTRONIC CONTROLLER - NF QTY. 1 1 1 1 CU-E18RKUA CWG712880 CWG712879 CWG565614 CWA747077 (Note) All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). "O" marked parts are
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© Panasonic Corporation 2015.
Order No: PAPAMY1501049CE
Indoor Unit
Outdoor Unit
CS-E9RKUAW
CS-E12RKUAW
CS-E18RKUAW
CS-E24RKUAW
CU-E9RKUA
CU-E12RKUA
CU-E18RKUA
CU-E24RKUA
Destination
USA
Canada
Please file and use this manual together with the service manual for Model No. CU-2E18NBU and CU-5E36QBU, Order No.
PHAAM1111120A1 and
PAPAMY1312037CE.
AUTO
COMFORT
POWERFUL/
QUIET
AIR SWING
FAN SPEED
ECONAVI
FAN
SPEED
AIR
SWING
AUTO
HEAT
COOL
DRY
FAN
/
OFF/ON
AUTO
COMFORT
POWERFUL/
QUIET
FAN SPEED
ECONAVI
AUTO
HEAT
COOL
DRY
FAN
FAN
SPEED
AIR
SWING
AIR SWING
/
OFF/ON
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to
service or repair the products dealt with in this service information by anyone else could result in serious injury or death.
PRECAUTION OF LOW TEMPERATURE
In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.