Sanyo 24KHS72 Service Manual
Sanyo 24KHS72 - 24,200 BTU Ductless Single Zone Mini-Split Wall-Mounted Heat Pump Manual
 |
View all Sanyo 24KHS72 manuals
Add to My Manuals
Save this manual to your list of manuals |
Sanyo 24KHS72 manual content summary:
- Sanyo 24KHS72 | Service Manual - Page 1
TECHNICAL & SERVICE MANUAL KHS1872 + CH1872 KHS2472 + CH2472 FILE NO. Destination: North America DC INVERTER SPLIT SYSTEM AIR CONDITIONER Indoor Model No. KHS1872 KHS2472 Product Code No. 1 852 099 85 1 852 099 86 Outdoor Model No. Product Code No. CH1872 1 852 330 38 CH2472 1 852 330 39 - Sanyo 24KHS72 | Service Manual - Page 2
installer or service person, it is an important part of your job to install or service the system so it operates safely and efficiently. For safe installation and trouble-free operation, you must: Carefully read this instruction air baffle. In a Snowy Area (for Heat Pump-type Systems) Install the - Sanyo 24KHS72 | Service Manual - Page 3
...23 5-3. Cooling Capacity (Low Ambient 25 5-4. Heating Capacity ...27 5-5. Air Throw Distance Charts 29 6. ELECTRICAL DATA 6-1. Electrical Operation Functions ...38 8-2. Protective Functions ...40 9. TROUBLESHOOTING 9-1. Precautions before Performing Inspection or Repair 42 9-2. Method - Sanyo 24KHS72 | Service Manual - Page 4
before Servicing 55 11-3. Tools Specifically for R410A 56 11-4. Tubing Installation Procedures 56 11-5. In Case of Compressor Malfunction 57 11-6. In Case Refrigerant is Leaking 59 11-7. Charging Additional Refrigerant 60 11-8. Retro-Fitting Existing Systems 60 APPENDIX A INSTRUCTION MANUAL - Sanyo 24KHS72 | Service Manual - Page 5
1. OPERATING RANGE Cooling Heating Temperature Maximum Minimum Maximum Minimum Indoor Air Intake Temp. 95 °F D.B. / 71 °F W.B. 67 °F D.B. / 57 °F W.B. 80 °F D.B. / 67 °F W.B. _ D.B. / _ W.B. Outdoor Air Intake Temp. 115 °F D.B. 0 °F D.B. 75 °F D.B. / 65 °F W.B. 0 °F D.B. 5 - Sanyo 24KHS72 | Service Manual - Page 6
Timer, 1-Hour OFF Timer Auto and 3 steps / Auto (Hi, Me, Lo) Manual Auto Washable, Anti-Mold DC Twin Rotary (Inverter) R410A / 2.87 (1,300) Electric air temperature 80°F D.B. / 67°F W.B. Outdoor air temperature 95°F D.B. / 75°F W.B. Heating: Indoor air temperature 70°F D.B. Outdoor air - Sanyo 24KHS72 | Service Manual - Page 7
Timer, 1-Hour OFF Timer Auto and 3 steps / Auto (Hi, Me, Lo) Manual Auto Washable, Anti-Mold DC Twin Rotary (Inverter) R410A / 2.87 (1,300) Electric air temperature 80°F D.B. / 67°F W.B. Outdoor air temperature 95°F D.B. / 75°F W.B. Heating: Indoor air temperature 70°F D.B. Outdoor air - Sanyo 24KHS72 | Service Manual - Page 8
, 1-Hour OFF Timer Auto and 3 steps / Auto (Hi, Me, Lo) Manual Auto Washable, Anti-Mold DC Twin Rotary (Inverter) R410A / 4.30 (1,950) Electric Indoor air temperature 80°F D.B. / 67°F W.B. Outdoor air temperature 95°F D.B. / 75°F W.B. Heating: Indoor air temperature 70°F D.B. Outdoor air - Sanyo 24KHS72 | Service Manual - Page 9
, 1-Hour OFF Timer Auto and 3 steps / Auto (Hi, Me, Lo) Manual Auto Washable, Anti-Mold DC Twin Rotary (Inverter) R410A / 4.30 (1,950) Electric Indoor air temperature 80°F D.B. / 67°F W.B. Outdoor air temperature 95°F D.B. / 75°F W.B. Heating: Indoor air temperature 70°F D.B. Outdoor air - Sanyo 24KHS72 | Service Manual - Page 10
Component Specifications 2-2-1. Indoor Unit Indoor Unit KHS1872 Control PCB Part No. Controls Control Circuit Fuse Remote Control Unit Fan Type Q'ty ... Dia. and Length Fan Motor Type Model ... Q'ty No. of Poles Rough Measure RPM (Cool / Heat) Nominal Output Coil Resistance (Ambient Temp. 68 °F (20 - Sanyo 24KHS72 | Service Manual - Page 11
Indoor Unit KHS2472 Control PCB Part No. Controls Control Circuit Fuse Remote Control Unit Fan Type Q'ty ... Dia. and Length Fan Motor Type Model ... Q'ty No. of Poles Rough Measure RPM (Cool / Heat) Nominal Output Coil Resistance (Ambient Temp. 68 °F (20 °C)) Safety Device Type Over-Current - Sanyo 24KHS72 | Service Manual - Page 12
Unit Outdoor Unit CH1872 Control PCB Part No. Controls Control Circuit Fuse Compressor Type Compressor Model / Nominal Output Compressor Oil ... ty ... Dia. inch (mm) Fan Motor Type Model ... Q'ty No. of Poles Rough Measure RPM (Cool / Heat) Nominal Output Coil Resistance (Ambient Temp. 68 - Sanyo 24KHS72 | Service Manual - Page 13
Part No. Controls Control Circuit Fuse Compressor Type Compressor Model Model ... Q'ty No. of Poles Rough Measure RPM (Cool / Heat) Nominal Output Coil Resistance (Ambient Temp. 68 °F (20 °C)) Safety Device Type Over- Current Protection Over- Heat Protection Run Capacitor W Ohm Micro F VAC Heat - Sanyo 24KHS72 | Service Manual - Page 14
86 104 122 140 158 176 194 (0) (10) (20) (30) (40) (50) (60) (70) (80) (90) Temperature °F (°C) Resistance (k ohm) • Outdoor air temp sensor (Model:TKS295B) • Outdoor heat exchanger sensor (Model:TKS292B) 40 35 30 25 20 15 10 5 0 -4 5 14 23 32 41 50 59 68 (-20)(-15)(-10) (-5) (0) (5) (10) (15) (20 - Sanyo 24KHS72 | Service Manual - Page 15
3. DIMENSIONAL DATA Indoor Unit KHS1872 KHS2472 Unit: inch(mm) 15 - Sanyo 24KHS72 | Service Manual - Page 16
13-5/32 Outdoor Unit CH1872 11-17/32 23-15/16 5-11/32 15/32 34-21/32(880) 2-17/32 Wide tube service valve dia.1/2" (12.70) Narrow tube service valve dia.1/4" (6.35) 26-3/8(670) 2-5/32 4-3/8 6-17/32 23/32 1-13/16 2-13/32 16 3/32 5-23/32 Unit: inch(mm - Sanyo 24KHS72 | Service Manual - Page 17
-19/32 14-17/32 Outdoor Unit CH2472 11-17/32 23-15/16 5-11/32 15/32 35-7/16(900) 2-15/16 Narrow tube service valve dia.1/4" (6.35) Wide tube service valve dia.5/8" (15.88) 29-1/8(740) 4-7/16 23/32 5-29/32 1-21/32 2-7/8 17 2-1/32 4-1/2 Unit: inch(mm) - Sanyo 24KHS72 | Service Manual - Page 18
4-way valve Compressor Heat exchanger Heat exchanger Narrow tube Narrow tube service valve Capillary tube for Electric split flow expansion valve unit, both the wide and narrow tubes of this air conditioner become cold. To prevent heat loss and wet floors due to dripping of condensation, - Sanyo 24KHS72 | Service Manual - Page 19
speed : High fan) (60Hz, 230V) Low pressure at wide tube service valve psig(MPaG) (1) Low pressure performance chart 174 (1.2) 159 (1.1) (10) (15) (20) (25) (30) (35) (40) Outdoor inlet air D.B. temp.°F(°C) (2) Operating current performance chart 8 7 6 Lo fan Indoor A78ir50T°°eFFm((22p47 - Sanyo 24KHS72 | Service Manual - Page 20
service valve psig (MPaG) 494 (3.4) 421 (2.9) 348 (2.4) Indoor air tem7p0.°7F3°(F21(°2C3)°C) 63°F (17°C) 275 (1.9) 23 32 (-5) (0) 41 50 59 68 77 (5) (10) (15) (20) (25) Outdoor inlet air protect the air conditioner when outdoor ambient temperature becomes extremely high in heating mode. (Refer - Sanyo 24KHS72 | Service Manual - Page 21
High fan) (60Hz, 230V) Low pressure at wide tube service valve psig(MPaG) (1) Low pressure performance chart 174 (1.2) 159 (5) (10) (15) (20) (25) (30) (35) (40) Outdoor inlet air D.B. temp.°F(°C) (3) Indoor discharge air performance chart 68.0 (20) 64.4 (18) Lo fan Hi Fan 60.8 (16) 57 - Sanyo 24KHS72 | Service Manual - Page 22
service valve psig (MPaG) 494 (3.4) 421 (2.9) 348 (2.4) Indoor air tem7p0.°7F3°(F21(°2C3)°C) 63°F (17°C) 275 (1.9) 23 32 (-5) (0) 41 50 59 68 77 (5) (10) (15) (20) (25) Outdoor inlet air protect the air conditioner when outdoor ambient temperature becomes extremely high in heating mode. (Refer - Sanyo 24KHS72 | Service Manual - Page 23
,590 11,390 11,180 10,980 10,780 8,640 TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h) NOTE 1. Rating conditions (#) : Indoor Unit Entering Air Temp. 80 °F (26.7 °C) D.B. / 67 °F (19.4 °C) W.B. : Outdoor Ambient Temp. 95 °F (35 °C) D.B. 2. Above data does not take Freeze - Sanyo 24KHS72 | Service Manual - Page 24
,620 14,380 14,150 13,920 11,820 9,370 TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h) NOTE 1. Rating conditions (#) : Indoor Unit Entering Air Temp. 80 °F (26.7 °C) D.B. / 67 °F (19.4 °C) W.B. : Outdoor Ambient Temp. 95 °F (35 °C) D.B. 2. Above data does not take Freeze - Sanyo 24KHS72 | Service Manual - Page 25
) W.B. D.B. 17,500 BTU/h 0 (-17.8) TC 15,050 5 (-15.0) 15,040 AIR FLOW RATE: OUTDOOR AMBIENT TEMP. oF (oC) 15 (-9.4) 25 (-3.9) 35 (1.7) 15,010 540 10,270 TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h) NOTE 1. Above data does not take Freeze Prevention Protection - Sanyo 24KHS72 | Service Manual - Page 26
W.B. D.B. 24,200 BTU/h 0 (-17.8) TC 20,890 5 (-15.0) 20,930 AIR FLOW RATE: OUTDOOR AMBIENT TEMP. oF (oC) 15 (-9.4) 25 (-3.9) 35 (1.7) 20,770 650 12,520 TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h) NOTE 1. Above data does not take Freeze Prevention Protection - Sanyo 24KHS72 | Service Manual - Page 27
17,930 19,090 20,310 21,550 22,790 23,990 25,220 25,700 TH : Total Heating Capacity (BTU/h) NOTE 1. Rating conditions (#) : Indoor Unit Entering Air Temp. 70 °F (21.1 °C) D.B. : Outdoor Ambient Temp. 47 °F (8.3 °C) D.B. / 43 °F (6.1 °C) W.B. 2. Above data does not take Defrost Operation, Overload - Sanyo 24KHS72 | Service Manual - Page 28
25,550 27,160 28,860 30,580 32,300 32,390 32,250 32,150 TH : Total Heating Capacity (BTU/h) NOTE 1. Rating conditions (#) : Indoor Unit Entering Air Temp. 70 °F (21.1 °C) D.B. : Outdoor Ambient Temp. 47 °F (8.3 °C) D.B. / 43 °F (6.1 °C) W.B. 2. Above data does not take Defrost Operation, Overload - Sanyo 24KHS72 | Service Manual - Page 29
velocity (ft./sec.) Vertical distance (ft.) 5 10 15 ::FFlalappaanngglele00 , ::FFlalappaanngglele3300,, ::AAxxisisaairirvveeloloccitiyty00 ::AAxxisisaairirvveeloloccitiyty3300 Heating Room air temp. : 70°F (21.1°C) Fan speed : High Horizontal distance (ft.) 0 5 10 15 - Sanyo 24KHS72 | Service Manual - Page 30
(ft./sec.) Vertical distance (ft.) 5 10 15 : :FFlalappaanngglele00 ,, : :FFlalappaanngglele3300,, : :AAxixsisaiarirvevleolcoictyity00 : :AAxixsisaiarirvevleolcoictyity3030 Heating Room air temp. : 70°F (21.1°C) Fan speed : High Horizontal distance (ft.) 0 5 10 15 20 - Sanyo 24KHS72 | Service Manual - Page 31
0.3 32 Outdoor Unit Fan Motor + Compressor 230V Single-phase 60Hz 6.7 1,468 Rating conditions: Indoor air temperature: 80°F (26.7°C) D.B. / 67°F (19.4°C) W.B. Outdoor air temperature: 95°F (35°C) D.B. Heating Performance at Rating conditions Rating conditions: Running amp. Power input Indoor - Sanyo 24KHS72 | Service Manual - Page 32
0.5 55 Outdoor Unit Fan Motor + Compressor 230V Single-phase 60Hz 10.3 2,300 Rating conditions: Indoor air temperature: 80°F (26.7°C) D.B. / 67°F (19.4°C) W.B. Outdoor air temperature: 95°F (35°C) D.B. Heating Performance at Rating conditions Rating conditions: Running amp. Power input Indoor - Sanyo 24KHS72 | Service Manual - Page 33
Wiring Diagrams Indoor Unit KHS1872 KHS2472 To avoid electrical shock hazard, be sure to WARNING disconnect power before checking, servicing and/or cleaning any electrical parts. TO OUTDOOR UNIT EVAPORATOR TERMINAL BASE BLK 1 WHT 2 RED 3 GRN/YEL IND LAMP ASSY CONNECTOR 1 1 RED 2 2 PNK FLAP - Sanyo 24KHS72 | Service Manual - Page 34
Outdoor Unit CH1872 To avoid electrical shock hazard, be sure to WARNING disconnect power before checking, servicing and/or cleaning any electrical parts. 3P-CONNECTOR (WHT) RED (PNK) WHT BLU REACTANCE TO INDOOR UNIT 123 123 2P-CONNECTOR (WHT) WHT WHT GRN/YEL GRN/YEL 12 12 RED - Sanyo 24KHS72 | Service Manual - Page 35
Outdoor Unit CH2472 To avoid electrical shock hazard, be sure to WARNING disconnect power before checking, servicing and/or cleaning any electrical parts. 3P-CONNECTOR (WHT) RED (PNK) WHT BLU REACTANCE TO INDOOR UNIT 2P-CONNECTOR (WHT) WHT WHT GRN/YEL GRN/YEL 1P-CONNECTOR (WHT) 11 12 - Sanyo 24KHS72 | Service Manual - Page 36
two indoor units are installed near each other. The address is normally set to "A." To set a different address, it is necessary to change the address on the second remote controller. NOTE Once changed, you cannot restore the original address setting of the air conditioner. (1) Switch on the power - Sanyo 24KHS72 | Service Manual - Page 37
7-2. Disconnecting and Connecting Positive Connector for Outdoor Unit Pull the cover upward One of the two types of connectors illustrated at left is used. Their basic structure is the same for each. How to Disconnect Hold the resin connector cover, and pull the connector off. You cannot - Sanyo 24KHS72 | Service Manual - Page 38
temp. Zone A Set temp. 74 Zone B Zone C Zone C Zone B Zone A Compressor Operation mode More than 1 hour ON OFF Cooling Within 1 hour ON OFF Heating ON Cooling SENSOR DRY During DRY operation, the system adjusts the room temperature and fan speed according to the conditions in the room - Sanyo 24KHS72 | Service Manual - Page 39
cooling is needed. Setting temperature 2°F(1°C) 2°F(1°C) Press the NIGHT SETBACK button 30 min. 30 min. Time HEAT mode When the night setback mode is selected, the air conditioner automatically lowers the temperature setting 4°F(2°C) when 30 minutes have passed after the selection was made - Sanyo 24KHS72 | Service Manual - Page 40
for 2 minutes or longer), the compressor stops. Once the freeze condition is detected, the air conditioner will work less than the maximum frequency until it is turned off. Cold-air prevention during heating During heating, the fan speed is set to "LL" (very low) or stopped. As the temperature - Sanyo 24KHS72 | Service Manual - Page 41
orange illumination. Releasing of defrosting Outdoor heating exchanger temp. is over 57.2°F (14°C). Defrosting operation lasts 12 minutes (maximum). 2 minutes after it is stopped, compressor is ON. 4-way valve is ON. Outdoor fan is ON. NOTE If the air conditioner is turned off during the defrosting - Sanyo 24KHS72 | Service Manual - Page 42
parts before problem, or the ROM has not been installed. 2: The failure mode is stored in memory even when the power is not ON. Follow the procedure below to perform diagnostics. < Clock display > Test run mode Self-diagnostics mode PROCEDURE After turning on power to the air conditioner trouble - Sanyo 24KHS72 | Service Manual - Page 43
, the corresponding parts listed below may not be present in some models. Indication on E03 E04 E05 E06 E07 E08 E09 Outdoor air temperature sensor failure Outdoor electrical current detection failure way valve failure (heat pump model only) (2) Outdoor PCboard failure (1) Service valve not opened. - Sanyo 24KHS72 | Service Manual - Page 44
(2) If the self-diagnostics function fails to operate Check the indoor unit. Is the fuse blown? Normal Replace the controller. No indicators illuminate and the indoor fan does not rotate. Check the power voltage. Blown Replace the circuit board or the fuse. 44 - Sanyo 24KHS72 | Service Manual - Page 45
jig and check that the LED flickers once every 8 seconds. If there are no problems with the above, then check the outdoor unit. For the "Test run" procedure, refer to the Appendix B "Installation Instructions". (2) Checking the outdoor unit No. Control Check items (unit operation) 1 Apply the - Sanyo 24KHS72 | Service Manual - Page 46
8. Overload Relay failure 9. Magnetic Coil failure (defective insulation, short-circuit, etc.) 10. Compressor failure (defective insulation, etc.) (3-1) Condition: E01 Troubleshooting Serial Communication Is the voltage of about DC12V or more given between the terminals 2 and 3 on the outdoor unit - Sanyo 24KHS72 | Service Manual - Page 47
( Continued from the previous page A. ) A ( Continued from the previous page B. ) B Yes Defect or connection error in the inter-unit cable Is the voltage of about DC22V to 24V given between the terminals 2 and 3 on the indoor unit terminal strip (Serial Communication Line) ? (Fig. 2) No Defect in - Sanyo 24KHS72 | Service Manual - Page 48
(3-2) Condition: E12 Troubleshooting Serial Communication 1. Turn off the power and wait until the power lamp (LED) of the outdoor unit controller is turned OFF. 2. Disconnect the cable from - Sanyo 24KHS72 | Service Manual - Page 49
again, turn OFF the unit once using the remote controller, and then start the air conditioner again. [Trouble symptom 1] The fan does not stop when the unit stops. Indoor unit controller trouble. [Trouble symptom 2] The fan motor does not rotate when the unit is operating. (Diagnostic procedure - Sanyo 24KHS72 | Service Manual - Page 50
to measure the coil resistance, and the following procedure should be used to check the motor. Perform the trouble diagnosis by Test Run mode described on Installation Instructions. Important: (A) Turn OFF the power before connecting or disconnecting the motor connectors. (B) When performing voltage - Sanyo 24KHS72 | Service Manual - Page 51
A noise filter is installed for ordinary use, preventing these problems. However, depending on the installation conditions, these effects may (televisions, radios, etc.) located nearby. Locations most susceptible to noise Trouble Correction 1. A television or radio is located near the A/C and - Sanyo 24KHS72 | Service Manual - Page 52
terminal screw on the terminal plate. (Fig. 2) Note that the ground line terminal should be skipped for the check. 10-1-3. Outdoor Unit Clamp a metallic part of the unit with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on each terminal screw where - Sanyo 24KHS72 | Service Manual - Page 53
10-2. Checking Continuity of Fuse on PCB Ass'y Remove the PCB Ass'y from the electrical component box. Then pull out the fuse from the PCB Ass'y. (Fig. 5) Check for continuity using a multimeter as shown in Fig. 6. Fuse PCB Ass'y Fig. 5 Fuse Fig. 6 53 - Sanyo 24KHS72 | Service Manual - Page 54
REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT 11-1. Characteristics of New it is in gaseous or liquid phase, and the basic performance of the air conditioner will be degraded if it is charged while the refrigerant is in gaseous state compared with conventional models are required. 54 - Sanyo 24KHS72 | Service Manual - Page 55
11-2. Checklist before Servicing Use a clutch-type flare tool for R410A or the with caps or tape prior to installation. Never use 0.0276" (0.7 mm)-thick copper tubing or tubing which is less than 0.0315" (0.8 mm) in thickness, since air conditioners with R410A are subject to higher pressure - Sanyo 24KHS72 | Service Manual - Page 56
the above vacuum pump (*1, *2) and vacuum pump adapter (*3), service port screw has been altered. R410A : 5/16" R22, R407C : 1/4" 11-4. Tubing Installation installation procedures, refer to the installation manuals attached to the indoor unit and outdoor unit. 56 - Sanyo 24KHS72 | Service Manual - Page 57
do not use oxygen or any flammable gas. (4) Evacuation Use a solenoid valve-installed vacuum pump so that even if power is cut off in the middle of evacuation of air due to a power interruption, the valve will prevent the pump oil from flowing back. The equipment may be damaged if moisture remains - Sanyo 24KHS72 | Service Manual - Page 58
state using the service port of the wide tube service valve. The to the charging cylinder before using it to charge the air conditioning unit. Example: In case of charging refrigerant to Kg) For the remaining refrigerant, refer to the instructions of the refrigerant manufacturer. If using a charging - Sanyo 24KHS72 | Service Manual - Page 59
or any flammable gas. (4) Check for sealing OK (5) Evacuation Use a solenoid valve-installed vacuum pump so that even if power is cut off in the middle of evacuation of air due to a power interruption, the valve will prevent the pump oil from flowing back. The equipment may be damaged if moisture - Sanyo 24KHS72 | Service Manual - Page 60
service manual or the installation manual that came with the indoor unit. Charge additional refrigerant in liquid state only. CAUTION Never charge additional refrigerant if refrigerant is leaking from the unit. Follow instructions will cause the air conditioner to operate - Sanyo 24KHS72 | Service Manual - Page 61
APPENDIX A INSTRUCTION MANUAL KHS1872 + CH1872 KHS2472 + CH2472 (OI-852-6-4180-801-00-2) A-1 - Sanyo 24KHS72 | Service Manual - Page 62
; refer to these descriptions when using the air conditioner. • Microprocessor Controlled Operation The interior compartment of • Hot Start Heating System Right from the start, the air is warm and comfortable. This system prevents any cold blasts at the beginning while the heat pump is warming up - Sanyo 24KHS72 | Service Manual - Page 63
Operation without the Remote Control Unit 22 Care and Cleaning 22 Troubleshooting...25 Operating Range...25 Product Information If you have problems or questions concerning your Air Conditioner, you will need the following information. Model and serial numbers are on the nameplate on the bottom of - Sanyo 24KHS72 | Service Manual - Page 64
3. Wiring must be done by a qualified electrician. Safety Instructions • Read this Instruction Manual carefully before using this air conditioner. If you still have any difficulties or problems, consult your dealer for help. • This air conditioner is designed to give you comfortable room conditions - Sanyo 24KHS72 | Service Manual - Page 65
of Parts Air intakes INDOOR UNIT Air outlet Remote control unit Drain hose Refrigerant tubes OUTDOOR UNIT Air outlet NOTE This illustration is based on the external view of a standard model. Consequently, the shape may differ from that of the air conditioner which you have selected. This air - Sanyo 24KHS72 | Service Manual - Page 66
cause malfunction of the unit. If the trouble happens, disconnect power and restart the air conditioner after a few minutes. QUIET OPERATION lamp TIMER When the remote control cannot be used, pressing this button enables heating and cooling operation. Each time this button is pressed, the type - Sanyo 24KHS72 | Service Manual - Page 67
unit sensor is in use Displayed when setting temperature Displayed when temperature is shown Displayed when setting timer (1) Operation mode AUTO HEAT MILD DRY COOL FAN 2) Fan speed Automatic operation HIGH MEDIUM LOW (3) Temperature setting 60 - 86 °F When set to 80 °F temperature - Sanyo 24KHS72 | Service Manual - Page 68
: This button is for turning the negative ions generated during operation on and off. ON/OFF operation button This button is for turning the air conditioner on and off. 1 HR. TIMER button (1-HOUR OFF TIMER) : When you press this button, regardless of whether the unit is operating or stopping, the - Sanyo 24KHS72 | Service Manual - Page 69
temperature and automatically switches to the ''COOL'' or ''HEAT'' mode as appropriate. : The air conditioner makes the room warmer. : The air conditioner reduces the humidity in the room. : The air conditioner makes the room cooler. : The air conditioner works only as a circulation fan. FAN SPEED - Sanyo 24KHS72 | Service Manual - Page 70
loss of the remote control unit or other trouble, the air conditioner will switch to the temperature sensor which is air conditioner's settings. • Use two fresh leak-proof type-AAA alkaline batteries. • In replacing batteries, follow the instructions as mentioned in the sub- section "How to Install - Sanyo 24KHS72 | Service Manual - Page 71
Unit The remote control unit may be operated either from a non-fixed position or from Installation Position a wall-mounted position. To ensure that the air conditioner operates correctly, DO NOT install the remote control unit in the following places: DO NOT • In direct sunlight • Behind a curtain - Sanyo 24KHS72 | Service Manual - Page 72
heating operation according to the difference between the room temperature and the temperature setting. STEP 2 STEP 1 NOTE Check that the circuit breaker on the power panel is turned on. Once mode is selected and the unit is preset by following the steps below, you can have the air conditioner - Sanyo 24KHS72 | Service Manual - Page 73
2. Manual Operation Operation with the Remote Control Unit (continued) OI-801-13EG STEP and select the desired mode. For heating operation → For dehumidifying operation → For cooling operation → For fan only operation → To start the air conditioner, press the ON/OFF operation button. - Sanyo 24KHS72 | Service Manual - Page 74
also acts as the sensor for room comfort and transmits the operating instructions. Once you've found this best position, always keep the remote manually during operation, just set the FAN SPEED selector button as desired. [ , , or ] 4. Fan Only STEP 2 STEP 3 STEP 1 If you want to circulate air - Sanyo 24KHS72 | Service Manual - Page 75
is convenient when gentle cooling is needed. 2 °F Setting temperature 2 °F B. In Heating Mode: ( ) Press the NIGHT SETBACK button 30 min. 30 min. Time When the night setback mode is selected, the air conditioner automatically lowers the temperature setting 4 °F when 30 minutes have passed - Sanyo 24KHS72 | Service Manual - Page 76
at the same time. NOTE • When set to High fan speed during heating operation, the fan runs at High fan speed even though the mark is displayed ION mode is used during operation to generate negative ions that freshen up the air in the room. Press the ION button. The mark appears in the display. - Sanyo 24KHS72 | Service Manual - Page 77
Heating ( ) Operation Heating performance • Because this air conditioner heats a room by drawing in the heat of the outside air (heat pump system), the heating heard from • In heating or cooling operation, any plastic parts may expand or shrink due to the air conditioner a sudden temperature change - Sanyo 24KHS72 | Service Manual - Page 78
the time rapidly in 10-minute increments. This completes the setting of the current time. 2. How to set the OFF time (Example) To stop the air conditioner at 11:00 am. 1. Press the OFF TIME setting button once. 2. Press the Advance, Return ( , ) button until AM 11:00 is displayed. 3. Wait a few - Sanyo 24KHS72 | Service Manual - Page 79
indication stops blinking and the present time is displayed. 4. How to set DAILY ON/OFF (Example) To start operation at 7:10 am. and stop the air conditioner at 11:00 am. REPEAT timer 10:30 pm. Present time 7:10 am. ON 11:00 am. OFF 1. Set the timer ON/OFF times as - Sanyo 24KHS72 | Service Manual - Page 80
Timer setting is given priority over the DAILY ON/OFF REPEAT DAILY ON/OFF REPEAT Timer setting. Tips for Energy Saving Do not • Block the air intake and outlet of the unit. If they are obstructed, the unit will not work well, and may be damaged. • Let direct sunlight into the - Sanyo 24KHS72 | Service Manual - Page 81
FAN SWEEP SWEEP A. Sweep function The flap starts moving up and down to deliver air over the sweep range. C. Auto flap function The flap is set to the recommended position. HEAT B. Setting the airflow manually Referring to the above illustration, use the FLAP button to set the airflow direction - Sanyo 24KHS72 | Service Manual - Page 82
trouble, follow the steps below. When the air conditioner heating operation, and the fan speed and flap are set to Auto. Care and Cleaning 1. For safety, be sure to turn the air conditioner a clean, soft cloth. If these parts are stained, use a clean cloth parts. 3. The internal coil and - Sanyo 24KHS72 | Service Manual - Page 83
slide into the top of the indoor unit, and then insert it all the way inside. FRONT mark Hook Groove Pin Air intake grille OI-801-23EG 3. To attach the air intake grille to the indoor unit, press its bottom right and left corners as well as its bottom center into place - Sanyo 24KHS72 | Service Manual - Page 84
heating appliances. Otherwise there is a risk of suffocation in extreme cases. How to install the air clean filter The air clean filter needs to be installed behind the air intake grille. 1. Remove the air intake grille. 2. Install the air local dealer. (model STK-FDXB) the air conditioner off parts - Sanyo 24KHS72 | Service Manual - Page 85
Troubleshooting If your air conditioner does not work properly, first check the following points before requesting service. If it still does not work properly, contact your dealer or service center. Trouble Possible Cause Remedy Air conditioner does not run at all. 1. Power failure. 1. - Sanyo 24KHS72 | Service Manual - Page 86
APPENDIX B INSTALLATION INSTRUCTIONS KHS1872 + CH1872 KHS2472 + CH2472 (II-852-6-4189-989-00-3) A-2 - Sanyo 24KHS72 | Service Manual - Page 87
INSTALLATION INSTRUCTIONS - Inverter Split System Air Conditioner - COOL/DRY/HEAT Model This air conditioner uses the new refrigerant R410A. NOTE Refrigerant service valve size = 5/16" Contents Page IMPORTANT! Please Read Before Starting 2 1. GENERAL 3 1-1. Tools Required for Installation ( - Sanyo 24KHS72 | Service Manual - Page 88
installer or service person, it is an important part of your job to install or service the system so it operates safely and efficiently. For safe installation and trouble-free operation, you must: G Carefully read this instruction air baffle. ...In a Snowy Area (for Heat Pump-type Systems) Install - Sanyo 24KHS72 | Service Manual - Page 89
install the air conditioning system. Please read over the entire set of instructions for the indoor and outdoor units and make sure all accessory parts listed are with the system before beginning. 1-1. Tools Required for Installation any specified instructions or limitations. Table 2 Model KHS1872 - Sanyo 24KHS72 | Service Manual - Page 90
Installation Site Selection 2-1. Indoor Unit WARNING AVOID: To prevent abnormal heat generation and the possibility of fire, do not place obstacles, enclosures and grilles in front of or surrounding the air conditioner in a way that may block air Fig. 3b Model KHS1872 KHS2472 Max Service Manual. 4 - Sanyo 24KHS72 | Service Manual - Page 91
service life. (Figs. 5c and 5d or 5e) A solid base must not cover CAUTION the hole of the bottom plate. G Install cushion Hot air Outdoor unit Exhaust fan Heat source Air discharge Obstacle Fig. 4 (CH1872) Air intake Min. 4" (10 cm) Valve side Min. 10" (25 cm) Min. Air discharge Min - Sanyo 24KHS72 | Service Manual - Page 92
3. How to Install the Indoor Unit 3-1. Remove the Rear Panel from the Unit (1) Remove and discard the set screw on the rear panel. (Fig. 6) (2) Press the 2 L marks on - Sanyo 24KHS72 | Service Manual - Page 93
stud locations and then mount the rear panel. (2) Double check with a carpenter's level or tape measure that the panel is level. This is important to install the unit properly. (Fig. 14) (3) Make sure the panel is flush against the wall. Any space between the wall and unit will cause noise and - Sanyo 24KHS72 | Service Manual - Page 94
3-4. Remove 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 as given below. How to remove the grille (1) Grasp both ends of the air intake grille, and remove it by opening - Sanyo 24KHS72 | Service Manual - Page 95
on the upper tabs of the rear panel. (Fig. 22) 3-6. Wiring Instructions General precautions on wiring (1) Before wiring, confirm the rated voltage of the unit allow wiring to touch the refrigerant tubing, compressor, or any moving parts of the fan. (6) Unauthorized changes in the internal wiring can - Sanyo 24KHS72 | Service Manual - Page 96
of local codes see the National Electric Code: ANSI/NFPA70. Table 5 AWG Model CH1872, CH2472 (A)+(B) (A) Power Supply Wiring Length (ft) (B) Power Line Length the risk of electric shock, each air conditioner unit must be grounded. G For the installation of a grounding device, please observe - Sanyo 24KHS72 | Service Manual - Page 97
Instructions for Inter-unit Connections (1) Insert the inter-unit wiring (according to local codes) into the through-the-wall PVC pipe. Run the wiring toward the indoor side allowing approx. 10" (25 cm) to extend from the wall face. (Fig. 24) (2) Grasp both ends of the air installing the air intake - Sanyo 24KHS72 | Service Manual - Page 98
hazard may also exist. Therefore, be sure all wiring is tightly connected. When connecting each power wire to the corresponding terminal, follow the instructions "How to connect wiring to the terminal" and fasten the wire securely tight with the fixing screw of the terminal plate. How to connect - Sanyo 24KHS72 | Service Manual - Page 99
3-9. Mounting (1) To install the indoor unit, mount the indoor unit onto the 2 tabs on the upper part of the rear plate. (2) Hold down the air discharge outlet and press the lower part of the indoor unit until it clicks to securely fasten to the 2 tabs on the lower part of the rear plate. (Fig. 33) - Sanyo 24KHS72 | Service Manual - Page 100
(If it is difficult to push in, wet the cap with water first.) (3) Install the indoor unit on the rear panel. (4) Connect the tubing and wiring led inside from with clamps. (Figs. 40a and 41) Hole in wall Rear panel Bent part Fig. 38 Wide tube Narrow tube Drain hose Fig. 39 Drain cap Drain - Sanyo 24KHS72 | Service Manual - Page 101
To unmount indoor unit Press the 2 L marks on the lower part of the indoor unit and unlatch the tabs. Then lift the indoor unit and unmount. (Fig. 42) 3-10. Drain Hose a) The drain hose should be - Sanyo 24KHS72 | Service Manual - Page 102
First refer to Section 2. Installation Site Selection. 4-1. Wiring Instructions for the Outdoor Unit Regulations on wire size differ from locality to locality. For field wiring requirements, please refer to your local electrical codes. Make sure that the installation fully complies with all local - Sanyo 24KHS72 | Service Manual - Page 103
5. Refrigerant Tubing 5-1. Use of the Flaring Method Many of the conventional split system air conditioners employ the flaring method to connect refrigerant tubes which run between indoor and outdoor units. In this method, the copper tubes are flared at each - Sanyo 24KHS72 | Service Manual - Page 104
the armoring tape too tightly, since this will decrease the heat insulation effect. Also, be sure the condensation drain hose splits away from the bundle and drips clear of the unit and the tubing. 5-7. Finishing the Installation After finishing insulating and taping over the tubing, use sealing - Sanyo 24KHS72 | Service Manual - Page 105
heating) efficiency drops G moisture in the air may freeze and block capillary tubing G water may lead to corrosion of parts in the refrigerant system I Air Purging with a Vacuum Pump R410A) Pressure gauge Lo Hi CAUTION The service port on the wide tube service valve uses a Schrader core valve to - Sanyo 24KHS72 | Service Manual - Page 106
liquid soap to check for any gas leaks around the service valves or caps. (14) If there is no leakage, stop the air conditioner. (15) Wipe off the soap on the tubing. This completes air purging with a vacuum pump and the air conditioner is ready for actual operation. 90° (1/4 turn) Narrow tube Hex - Sanyo 24KHS72 | Service Manual - Page 107
" and "oP-1" will disappear from the remote controller display area. NOTE Troubleshooting: In the event that the green "Operation Light" is blinking upon powering press the ACL (reset) button to return to normal mode. The air conditioner will not operate correctly if this is not done. 21 ION button - Sanyo 24KHS72 | Service Manual - Page 108
(3-Way) O-ring Valve cap Stem Operating and test running the air conditioner Fully OPEN Fully OPEN Measuring pressure * and gas charging Air purging with a vacuum pump CLOSED * The service port on the wide tube ser- * vice valve uses a Schrader core valve to access the refrigerant - Sanyo 24KHS72 | Service Manual - Page 109
The remote control unit can be operated from either a non-fixed position or a wall-mounted position. To ensure that the air conditioner operates correctly, do not install the remote control unit in the following places: G In direct sunlight G Behind a curtain or other place where it is covered - Sanyo 24KHS72 | Service Manual - Page 110
when two Sanyo indoor units are installed near each other. The address is normally set to "A." To set a different address, it is necessary to change the address on the second remote controller. NOTE Once changed, you cannot restore the original address setting of the air conditioner. (1) Switch on - Sanyo 24KHS72 | Service Manual - Page 111
SANYO Commercial Solutions A Division of SANYO North America Corporation 1300 Michael Drive, Suite A Wood Dale, IL 60191, U.S.A. Sanyo Canada Inc. 1-300 Applewood Crescent, Concord, Ontario L4K 5C7, CANADA Jan. / 2009 (T)
-
1 -
2 -
3 -
4 -
5 -
6 -
7 -
8
-
9
-
10
-
11
-
12
-
13
-
14
-
15
-
16
-
17
-
18
-
19
-
20
-
21
-
22
-
23
-
24
-
25
-
26
-
27
-
28
-
29
-
30
-
31
-
32
-
33
-
34
-
35
-
36
-
37
-
38
-
39
-
40
-
41
-
42
-
43
-
44
-
45
-
46
-
47
-
48
-
49
-
50
-
51
-
52
-
53
-
54
-
55
-
56
-
57
-
58
-
59
-
60
-
61
-
62
-
63
-
64
-
65
-
66
-
67
-
68
-
69
-
70
-
71
-
72
-
73
-
74
-
75
-
76
-
77
-
78
-
79
-
80
-
81
-
82
-
83
-
84
-
85
-
86
-
87
-
88
-
89
-
90
-
91
-
92
-
93
-
94
-
95
-
96
-
97
-
98
-
99
-
100
-
101
-
102
-
103
-
104
-
105
-
106
-
107
-
108
-
109
-
110
-
111
 |
 |
IMPORTANT
These air conditioners employ new
refrigerant R410A.
Pay special attention when
servicing the unit.
TECHNICAL & SERVICE MANUAL
KHS1872 + CH1872
KHS2472 + CH2472
DC INVERTER SPLIT SYSTEM AIR CONDITIONER
Destination: North America
Outdoor Model No.
CH1872
CH2472
Product Code No.
1 852 330 38
1 852 330 39
Indoor Unit
Outdoor Unit
KHS1872
KHS2472
CH1872
CH2472
Indoor Model No.
KHS1872
KHS2472
Product Code No.
1 852 099 85
1 852 099 86
REFERENCE NO.
SM
700656-05
FILE NO.