Sanyo CH0951 Technical & Service Manual Download Page 65

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9-4. Air conditioner operates, but abnormalities are observed.

9-4-1. Operation does not switch from HEAT to COOL (or COOL to HEAT).

• Indoor PCB Ass'y is defective.

• Check voltage between terminals

No. 3(+) and No. 5 at terminal plate.

(DC 24V)

No voltage appears.

Outdoor PCB Ass'y is defective.

• Remote control unit may be defective.

• Measure resistance of 4–way valve's

winding.

Receiver in lamp Ass'y may be
defective.

COOL

➞

HEAT

• Check voltage between terminals

No. 3(+) and No. 5 at terminal plate.

(0V)

HEAT

➞

COOL

000-111

(18-68)

00.3.17

11:49

y [ W 61

Summary of Contents for CH0951

Page 1: ...TEM AIR CONDITIONER FILE NO Indoor Model No Product Code No KHS0951 1 852 069 13 KHS1251 1 852 069 14 KHS1852 S 1 852 069 15 Outdoor Model No Product Code No CH0951 1 852 069 16 CH1251 1 852 069 17 CH1852 1 852 069 18 Indoor Unit Outdoor Unit Destination U S A KHS0951 KHS1251 KHS1852 CH0951 CH0952 CH1852 ...

Page 2: ...g Be careful when picking up and moving the indoor and out door units Get a partner to help and bend your knees when lifting to reduce strain on your back Sharp edges or thin alu minum fins on the air conditioner can cut your fingers When Installing In a Ceiling or Wall Make sure the ceiling wall is strong enough to hold the unit s weight It may be necessary to construct a strong wood or metal fra...

Page 3: ...tion Site Selection 42 7 2 Remote Control Unit Installation Position 44 7 3 Address Switches 45 7 4 Recommended Wire Length and Diameter 46 8 FUNCTION 8 1 Room Temperature Control 47 8 2 Dry Operation Dehumidification 49 8 3 Automatic Switching between Cooling and Heating 49 8 4 Freeze Prevention Cooling 50 8 5 Overload Prevention Heating 50 8 6 Cold draft Prevention Heating 51 8 7 Defrosting Oper...

Page 4: ...ELECTRICAL COMPONENTS 10 1 Measurement of Insulation Resistance 64 10 2 Checking Continuity of Fuse on PCB Ass y 65 10 3 Checking Motor Capacitor 65 11 ARRANGEMENT OF ELECTRICAL COMPONENT 66 INSTRUCTION MANUAL APPENDIX ...

Page 5: ...emperature Indoor Air Intake Temp Outdoor Air Intake Temp Cooling Maximum 95 F D B 71 F W B 115 F D B Minimum 67 F D B 57 F W B 67 F D B Heating Maximum 80 F D B 67 F W B 75 F D B 65 F W B Minimum D B W B 17 F D B 15 F W B ...

Page 6: ...ubing connections Flare Max allowable tubing length at shipment ft m 25 7 5 Refrigerant tubing Narrow tube inch mm 1 4 6 35 diameter Wide tube inch mm 3 8 9 52 Dimensions Weight Indoor Unit Outdoor Unit Unit dimensions Height inch mm 10 5 8 270 21 1 4 540 Width inch mm 31 11 16 805 31 1 2 800 Depth inch mm 6 31 32 177 11 13 32 290 Package dimensions Height inch mm 9 13 16 249 23 31 32 609 Width in...

Page 7: ...Max allowable tubing length at shipment ft m 25 7 5 Refrigerant tubing Narrow tube inch mm 1 4 6 35 diameter Wide tube inch mm 1 2 12 7 Dimensions Weight Indoor Unit Outdoor Unit Unit dimensions Height inch mm 10 5 8 270 21 1 4 540 Width inch mm 31 11 16 805 31 1 2 800 Depth inch mm 6 31 32 177 11 13 32 290 Package dimensions Height inch mm 9 13 16 249 23 31 32 609 Width inch mm 33 21 32 855 38 5 ...

Page 8: ... at shipment ft m 25 7 5 Refrigerant tubing Narrow tube inch mm 1 4 6 35 diameter Wide tube inch mm 5 8 15 88 Dimensions Weight Indoor Unit Outdoor Unit Unit dimensions Height inch mm 11 7 32 285 24 19 32 625 Width inch mm 39 3 16 995 34 21 32 880 Depth inch mm 7 23 32 196 12 19 32 320 Package dimensions Height inch mm 10 7 8 276 27 15 16 710 Width inch mm 42 1 8 1 070 40 9 16 1 030 Depth inch mm ...

Page 9: ...C12V Coil resistance ambient temp 77 F 25 C Ω WHT BLU respectively 4 wires 380 7 Heat Exchanger Coil Coil Aluminum plate fin Copper tube Rows 2 Fin pitch inch mm 1 16 1 4 Face area ft2 m2 1 40 0 130 Fan Fan Motor Type Cross flow Q ty Dia and length inch mm 1 ø 3 3 4 L24 9 32 ø 95 L617 Fan motor model Q ty KFV4 21H1PA 1P Nominal output W 20 Coil resistance ambient temp 68 F 20 C Ω BLU BRN 100 9 BLU...

Page 10: ...nt temp 77 F 25 C Ω WHT BLU respectively 4 wires 380 7 Heat Exchanger Coil Coil Aluminum plate fin Copper tube Rows 2 Fin pitch inch mm 1 16 1 4 Face area ft2 m2 1 40 0 130 Fan Fan Motor Type Cross flow Q ty Dia and length inch mm 1 ø 3 3 4 L24 9 32 ø 95 L617 Fan motor model Q ty KFV4 21H1PA 1P Nominal output W 20 Coil resistance ambient temp 68 F 20 C Ω BLU BRN 100 9 BLU PNK 127 5 Run capacitor µ...

Page 11: ...mp 77 F 25 C Ω Each terminals 1 2 1 3 1 4 1 5 400 7 Heat Exchanger Coil Coil Aluminum plate fin Copper tube Rows 2 Fin pitch inch mm 1 16 1 3 Face area ft2 m2 1 68 0 156 Fan Fan Motor Type Cross flow Q ty Dia and length inch mm 1 ø 3 15 32 L29 3 8 ø88 L746 Fan motor model Q ty UF4 31D6P S 1P Nominal output W 30 Coil resistance ambient temp 68 F 20 C Ω WHT BRN 204 2 WHT PNK 158 3 Run capacitor µF 2...

Page 12: ...y devices Type External OLR Overload relay MRA99111 9200 Run capacitor µF 40 VAC 400 Crank case heater 115V 20W Fan Fan Motor Type Propeller Q ty Dia and length inch mm 1 16 17 32 ø 420 Fan motor model Q ty UE6 21BA1PA 1 No of poles rpm 115V High 6 630 Nominal output W 20 Coil resistance ambient temp 68 F 20 C Ω BLU BRN 45 3 BLU PNK 50 5 Run capacitor µF 8 VAC 220 Heat Exchanger Coil Coil Aluminum...

Page 13: ...Type External OLR Overload relay MRA98693 9200 Run capacitor µF 40 VAC 400 Crank case heater 115V 20W Heat Exchanger Coil Coil Aluminum plate fin Copper tube Rows 2 Fin pitch inch mm 1 16 1 4 Face area ft2 m2 3 37 0 313 External Finish Acrylic baked on enamel finish Fan Fan Motor Type Propeller Q ty Dia and length inch mm 1 16 17 32 ø 420 Fan motor model Q ty UE6 21BA1PA 1 No of poles rpm 115V Hig...

Page 14: ...es Type External OLR Overload relay MRA99117 9200 Run capacitor µF 35 VAC 400 Crank case heater 230V 20W Heat Exchanger Coil Coil Aluminum plate fin Copper tube Rows 2 Fin pitch inch mm 1 16 1 6 Face area ft2 m2 5 13 0 477 External Finish Acrylic baked on enamel finish Fan Fan Motor Type Propeller Q ty Dia and length inch mm 1 16 17 32 ø 420 Fan motor model Q ty KFG6 51E6PA 1 No of poles rpm 230V ...

Page 15: ...Resistance kΩ 32 F 0 C 15 2 Thermistor Room sensor in lamp Ass y DTN TKS134B Resistance kΩ 77 F 25 C 5 3 Thermistor Coil sensor DTN TKS131B Resistance kΩ 32 F 0 C 15 2 Thermistor Room sensor DTN TKS142B Resistance kΩ 77 F 25 C 5 3 DATA SUBJECT TO CHANGE WITHOUT NOTICE 2 Indoor unit KHS1251 Transformer ATR T4 Rating Primary AC 115V 60Hz Secondary 19V 0 5A DATA SUBJECT TO CHANGE WITHOUT NOTICE 3 Ind...

Page 16: ... 10 Contact rating AC 250V 20A PTC Thermistor PS2A E20 470 Resistance Ω at 77 F 25 C 47 25 2 Outdoor Unit CH1251 DATA SUBJECT TO CHANGE WITHOUT NOTICE 4 way Valve Solenoid coil LB69001 Coil VH79102 Valve Coil rating AC 120V 6W Thermostat Low temp cutoff 23A TRS02 M13MSR436 Operating temp F C OFF OPEN 5 F 15 C ON CLOSE 17 F 8 3 C Thermostat Defrost thermo 23D TRS02 12MSR Operating temp F C ON 54 4 ...

Page 17: ...stat Low temp cutoff 23A TRS02 M13MSR436 Operating temp F C OFF OPEN 5 F 15 C ON CLOSE 17 F 8 3 C Thermostat Defrost thermo 23D TRS02 12MSR Operating temp F C ON 54 4 F 12 2 C Diff 14 deg 8 deg below Power Relay PR DFU24D1 F Coil rating DC 24V Coil resistance Ω at 68 F 20 C 650 10 Contact rating AC 250V 20A 3 Outdoor Unit CH1852 ...

Page 18: ...0 1 5 8 41 0 Drain hose ø23 32 18 Narrow tube ø1 4 6 35 Wide tube Center of tubing hole 2 places Unit inch mm 6 7 32 172 5 Remote control unit 2 2 5 61 25 32 18 5 KHS0951 KHS1251 ø3 8 9 52 ø1 2 12 7 3 DIMENSIONAL DATA 3 1 Unit 3 1 1 Indoor Unit 1 Indoor unit KHS0951 KHS1251 ...

Page 19: ...5 1 25 32 45 39 3 16 995 147 5 5 13 16 147 5 5 13 16 7 23 32 196 1 8 3 Unit inch mm 1 25 32 45 6 7 32 172 5 Remote control unit 2 2 5 61 25 32 18 5 Drain hose ø18 Narrow tube ø6 35 1 4 Wide tube ø15 88 5 8 Center of tubing hole 2 places ...

Page 20: ...1 4 12 7 16 11 13 32 23 15 16 31 2 1 3 25 32 2 ø15 32 3 7 16 2 5 32 Narrow tube service valve Wide tube service valve 11 13 32 ø6 35 1 4 15 32 Unit inch mm CH0951 CH1251 ø3 8 9 52 ø1 2 12 7 3 1 2 Outdoor Unit 1 Outdoor unit CH0951 CH1251 ...

Page 21: ... unit CH1852 Air discharge Air intake 5 8 21 19 32 13 5 32 12 7 32 23 15 16 34 21 32 5 11 32 4 ø15 32 3 7 16 2 5 32 Narrow tube service valve Wide tube service valve ø6 35 1 4 ø15 88 5 8 15 32 12 19 32 Unit inch mm ...

Page 22: ...hanger Muffler Capillary tube Strainer Cooling cycle Heating cycle Indoor unit Outdoor unit O D 1 4 øø6 35 mm Capillary tube Check valve Indoor unit KHS1852 Outdoor unit CH1852 Compressor 4 way valve Accumulator Wide tube service valve Wide tube O D 5 8 ø15 88 mm Narrow tube service valve Narrow tube Heat exchanger Muffler Capillary tube Strainer Cooling cycle Heating cycle Indoor unit Outdoor uni...

Page 23: ...7 11 2 150 340 320 300 280 260 240 220 200 180 160 High pressure psig kg cm 2 G at wide tube serveice valve Heating Characteristics 10 12 2 60 15 6 20 6 6 30 1 1 40 4 4 50 10 0 60 15 6 70 21 1 80 26 7 10 12 2 70 21 1 80 26 7 90 32 2 100 37 8 110 43 3 120 48 9 60 15 6 Indoor inlet air D B temp F C 95 35 0 80 26 7 67 19 4 95 35 0 80 26 7 67 19 4 80 26 7 70 21 1 59 15 0 80 26 7 70 21 1 59 15 0 Overlo...

Page 24: ...racteristics 10 12 2 60 15 6 20 6 6 30 1 1 40 4 4 50 10 0 60 15 6 70 21 1 80 26 7 10 12 2 70 21 1 80 26 7 90 32 2 100 37 8 110 43 3 120 48 9 60 15 6 Indoor inlet air D B temp F C 95 35 0 80 26 7 67 19 4 95 35 0 80 26 7 67 19 4 80 26 7 70 21 1 59 15 0 80 26 7 70 21 1 59 15 0 10 5 23 9 22 5 21 1 19 7 18 3 16 9 15 5 14 1 12 7 11 2 150 340 320 300 280 260 240 220 200 180 160 Overload prevention operat...

Page 25: ...haracteristics 10 12 2 60 15 6 20 6 6 30 1 1 40 4 4 50 10 0 60 15 6 70 21 1 80 26 7 10 12 2 70 21 1 80 26 7 90 32 2 100 37 8 110 43 3 120 48 9 60 15 6 Indoor inlet air D B temp F C 95 35 0 80 26 7 67 19 4 80 26 7 70 21 1 59 15 0 80 26 7 70 21 1 59 15 0 95 35 0 80 26 7 67 19 4 10 5 23 9 22 5 21 1 19 7 18 3 16 9 15 5 14 1 12 7 11 2 150 340 320 300 280 260 240 220 200 180 160 Overload prevention oper...

Page 26: ...Heating Horizontal distance ft Axis air velocity ft sec Vertical distance ft Room air temp 80 F 26 7 C Fan speed High Cooling 0 5 10 15 0 5 10 15 20 25 30 Flap angle 0 Axis air velocity 0 Flap angle 30 Axis air velocity 30 0 5 10 15 0 5 10 15 20 25 30 Flap angle 45 Axis air velocity 45 Flap angle 60 Axis air velocity 60 1 Indoor Unit KHS0951 ...

Page 27: ...ntal distance ft Axis air velocity ft sec Vertical distance ft Room air temp 80 F 26 7 C Fan speed High Cooling 0 5 10 15 0 5 10 15 20 25 30 Flap angle 0 Axis air velocity 0 Flap angle 30 Axis air velocity 30 0 5 10 15 0 5 10 15 20 25 30 Flap angle 45 Axis air velocity 45 Flap angle 60 Axis air velocity 60 2 Indoor Unit KHS1251 ...

Page 28: ...ntal distance ft Axis air velocity ft sec Vertical distance ft Room air temp 80 F 26 7 C Fan speed High Cooling 0 5 10 15 0 5 10 15 20 25 30 Flap angle 0 Axis air velocity 0 Flap angle 30 Axis air velocity 30 0 5 10 15 0 5 10 15 20 25 30 Flap angle 45 Axis air velocity 45 Flap angle 60 Axis air velocity 60 3 Indoor Unit KH1852 ...

Page 29: ...I 0 65 0 71 0 78 0 85 0 94 72 22 2 SHC 4 610 4 450 4 260 4 060 3 850 67 76 24 4 SHC 5 470 5 300 5 120 4 920 4 700 19 4 80 26 7 SHC 6 360 6 200 6 010 5 810 5 600 84 28 9 SHC 7 220 7 050 6 870 6 670 6 450 88 28 9 SHC 8 080 7 910 7 720 7 520 7 310 TC 10 460 10 090 9 700 9 270 8 800 CI 0 66 0 72 0 79 0 87 0 96 72 22 2 SHC 3 560 3 420 3 270 3 100 2 930 71 76 24 4 SHC 4 420 4 270 4 120 3 960 3 790 21 7 ...

Page 30: ...770 TC 12 760 12 260 11 700 11 080 10 400 CI 0 91 1 1 09 1 19 1 32 72 22 2 SHC 5 910 5 690 5 450 5 180 4 900 67 76 24 4 SHC 6 920 6 700 6 450 6 190 5 900 19 4 80 26 7 SHC 7 970 7 750 7 500 7 240 6 960 84 28 9 SHC 8 980 8 760 8 510 8 250 7 960 88 28 9 SHC 9 980 9 760 9 520 9 250 8 970 TC 13 440 12 980 12 470 11 920 11 310 CI 0 92 1 01 1 11 1 22 1 35 72 22 2 SHC 4 660 4 470 4 270 4 050 3 820 71 76 2...

Page 31: ... 13 150 TC 18 550 17 820 17 000 16 100 15 110 CI 1 29 1 41 1 54 1 68 1 86 72 22 2 SHC 8 600 8 240 7 850 7 430 6 990 67 76 24 4 SHC 9 790 9 440 9 050 8 630 8 180 19 4 80 26 7 SHC 11 040 10 680 10 290 9 880 9 430 84 28 9 SHC 12 230 11 880 11 490 11 070 10 620 88 28 9 SHC 13 430 13 070 12 680 12 260 11 810 TC 19 530 18 850 18 120 17 320 16 440 CI 1 3 1 42 1 56 1 72 1 9 72 22 2 SHC 7 040 6 740 6 420 6...

Page 32: ... 13 150 TC 18 550 17 820 17 000 16 100 15 110 CI 1 29 1 41 1 54 1 68 1 86 72 22 2 SHC 8 600 8 240 7 850 7 430 6 990 67 76 24 4 SHC 9 790 9 440 9 050 8 630 8 180 19 4 80 26 7 SHC 11 040 10 680 10 290 9 880 9 430 84 28 9 SHC 12 230 11 880 11 490 11 070 10 620 88 28 9 SHC 13 430 13 070 12 680 12 260 11 810 TC 19 530 18 850 18 120 17 320 16 440 CI 1 3 1 42 1 56 1 72 1 9 72 22 2 SHC 7 040 6 740 6 420 6...

Page 33: ...tion Indoor 70 F 21 1 C D B Outdoor 47 F 8 3 C D B 43 F 6 1 C W B 2 Above characteristics indicate instantaneous operation which does not take into account defrost operation 3 Fan speed High 4 Because this air conditioner heats a room by drawing in the heat of the outside air heat pump system the heating efficiency will fall off when the outdoor temperature is very low If sufficient heat cannot be...

Page 34: ...d Conditions Indoor Air Temperature 95 F 35 C D B 70 F 21 2 C W B Outdoor Air Temperature 115 F 46 1 C D B HEATING Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 115V Single phase 60Hz Rating Conditions Running Amps A 0 40 0 70 7 3 8 4 Power Input kW 0 034 0 081 0 775 0 89 Full Load Conditions Running Amps A 0 40 0 70 8 6 9 7 Power Input kW 0 034 0 081 0 935 1...

Page 35: ...emperature 95 F 35 C D B 70 F 21 2 C W B Outdoor Air Temperature 115 F 46 1 C D B HEATING Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 115V Single phase 60Hz Rating Conditions Running Amps A 0 40 0 70 9 2 10 3 Power Input kW 0 034 0 081 1 055 1 17 Full Load Conditions Running Amps A 0 40 0 70 10 9 12 0 Power Input kW 0 034 0 081 1 255 1 37 Rating Conditions ...

Page 36: ...emperature 95 F 35 C D B 70 F 21 2 C W B Outdoor Air Temperature 115 F 46 1 C D B HEATING Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 230 208V Single phase 60Hz Rating Conditions Running Amps A 0 25 0 23 0 49 0 46 6 36 6 81 7 1 7 5 Power Input kW 0 047 0 045 0 113 0 095 1 45 1 40 1 61 1 54 Full Load Conditions Running Amps A 0 25 0 23 0 49 0 46 8 6 9 4 9 3 ...

Page 37: ...33 6 2 Electric Wiring Diagrams 1 Indoor unit KHS0951 KHS1251 WARNING To avoid electrical shock hazard be sure to disconnect power before checking servicing and or cleaning any electrical parts ...

Page 38: ...34 2 Indoor unit KHS1852 WARNING To avoid electrical shock hazard be sure to disconnect power before checking servicing and or cleaning any electrical parts ...

Page 39: ...35 3 Outdoor unit CH0951 CH1251 WARNING To avoid electrical shock hazard be sure to disconnect power before checking servicing and or cleaning any electrical parts ...

Page 40: ...36 4 Outdoor unit CH1852 WARNING To avoid electrical shock hazard be sure to disconnect power before checking servicing and or cleaning any electrical parts ...

Page 41: ...37 5 Printed circuit board POW KHS095A for KHS0951 Top view Bottom view ...

Page 42: ...38 6 Printed circuit board POW KHS125A for KHS1251 Top view Bottom view ...

Page 43: ...39 7 Printed circuit board POW KHS095B for KHS0951 and KHS1251 Top view Bottom view ...

Page 44: ...40 8 Printed circuit board POW KHS1852 for KHS1852 Top view Bottom view ...

Page 45: ...41 9 Printed circuit board POW CH095 for CH0951 CH1251 and CH1852 Top view ...

Page 46: ... INDOOR UNIT Tubing length L OUTDOOR UNIT Elevation difference H Fig 3a Indoor unit Floor level Wall Minimum height from floor level 5 ft 1 5 m Fig 3b For stable operation of the air conditioner do not install wall mounted type indoor units under 5 ft 1 5 m from floor level CAUTION Table 1 AVOID direct sunlight nearby heat sources that may affect performance of the unit areas where leakage of flam...

Page 47: ...stall the outdoor unit above snowfall line Do not place objects on or sit on the out door unit Also never block the air intake outlet or exhaust Distortion of the outdoor unit or incomplete combustion may result Do not introduce foreign matter into the air intake outlet or exhaust Do not poke them with such objects as a stick provide a solid base level concrete pad concrete block 4 in 16 in 10 40 ...

Page 48: ...position 3 After confirming correct operation use a screw driver to screw the supplied special mounting screw into the wall Fig 6 4 Hang the remote control unit from the mounting screw b Non removable mounting 1 Momentarily hold the remote control unit at the desired mounting position 2 Confirm that the air conditioner responds cor rectly when you press keys on the remote con trol from that positi...

Page 49: ...ts Remove the casing then follow the steps below a Unscrew the cover plate of the electrical component box Remove the PCB Locate and cut the jumper wire Figs 9 and 10 b Table 2 shows the positions you can use for up to 2 indoor units installed in the same room Figs 8 9 and 10 Table 2 Indoor Unit Remote Control Unit Address Fig 8 WARNING Risk of Electric Shock Be sure to turn the air con ditioner o...

Page 50: ...e 115V 60Hz L1 L2 INDOOR UNIT Terminal Disconnect switch Field supply 1 2 3 4 5 6 1 2 3 4 5 6 7 8 G G G Grounding line Inter unit Power lines Inter unit Control lines Terminal OUTDOOR UNIT Power supply line Single phase 230 208V 60Hz L1 L2 Fig 11 CAUTION Be sure to connect the power supply line to the outdoor unit as shown in the wiring diagram The indoor unit draws its power from the outdoor unit...

Page 51: ...rigerant pres sure the control circuit has a built in automatic time delay to allow the internal pressure to equalize As a protective measure the control circuit switches the compressor OFF after 5 minutes or more of compressor operation Thermo ON When the room temperature is above T 2 F T C is set temperature Compressor ON Thermo OFF When the room temperature is equal to or below set temperature ...

Page 52: ... As a protective measure the control circuit switches the compressor OFF after 5 minutes or more of compressor operation Thermo ON When the room temperature is below T 2 F T C is set temperature Compressor ON Thermo OFF When the room temperature is equal to or above set temperature T F Compressor OFF 1 Refer to 8 6 Cold Draft Prevention NOTE 3 minutes 3 minutes 3 minutes 3 minutes 3 minutes 3 minu...

Page 53: ...or calculates the difference between the set temperature and the room temperature and automatically switches to COOLING or HEATING mode to maintain the desired tem perature Room temp Set temp COOL Room temp Set temp HEAT This means that if the room temperature is higher than or equal to the set temperature COOLING operation begins If the room temperature is lower than the set temperature HEATING o...

Page 54: ...nts overheating of the indoor heat exchange coil When the temperature of the indoor heat exchange coil rises above 139 F and if the indoor fan is L low speed then the fan speed changes from L low speed to M medium speed When the temperature of the indoor heat exchange coil rises above 141 F the outdoor fan stops ON ON OFF ON H or M or L H H M M L M 141 139 126 120 Indoor heat exch coil temp F Outd...

Page 55: ...xchange coil have sufficiently warmed up STANDBY lamp on front of the indoor unit lights up when this function is working when 10 minutes has elapsed the fan speed is automatically switched to set speed regardless of indoor heat exchange coil temperature OFF ON LL OFF Set speed Indoor fan Standby lamp Indoor heat exch coil temp F 95 77 Max 10minutes ...

Page 56: ...re than 1 5 hours Thermo OFF Compressor OFF C D Temperature of indoor heat exchanger coil is below 113 F Temperature of indoor heat exchanger coil is below 113 F Continuous operating time of compressor is more than 20 minutes Outdoor fan is either operated or stopped for more than 10 minutes A Is outdoor fan continuously operating for more than 10 minutes Integrated operating time of compressor is...

Page 57: ...h compressor and outdoor fan stop if the outdoor temperature drops around 5 F However the indoor fan continues to operate even after the compressor has stopped Note that standby lamp does not lights up during this period 5 F 17 F Outdoor air temp Compressor and Outdoor fan Indoor fan Standby lamp ON OFF OFF ON ON ON ON NOTE ON ON ON ON ON ON ON ON Set speed OFF OFF OFF OFF 32 seconds Max 11 minute...

Page 58: ...ified range 10 of the rating Check that power is being supplied 9 1 4 Check lead wires and connectors in indoor and outdoor units Check that coating of lead wires is not damaged Check that lead wires and connectors are firmly connected Check that wiring is correct 1 2 4 5 6 8 1 2 3 4 5 6 Indoor unit Outdoor unit Inter unit power wiring Inter unit control wiring 7 Power supply Single phase 60Hz 115...

Page 59: ...O Set circuit breaker to OFF Measure insulation resistance of electrical parts in indoor unit 1 Remove both power supply wires and inter unit wires from terminal plate in outdoor unit Measure insulation resistance of outdoor unit 2 Remove inter unit wires from terminal plate in indoor unit Measure insulation resistance of indoor unit Insulation of outdoor unit is defective Insulation of indoor uni...

Page 60: ...elector switch to ON Lamp Ass y or indoor PCB Ass y is defective NO Check power supply Power is being supplied to the outdoor unit Circuit breaker is tripped Power failure Reset breaker Wait for recovery or contact power company Replace with suitable one larger capacity NO Check capacity of circuit breaker Capacity of circuit breaker is suitable Measure resistance of outdoor fan motor winding Meas...

Page 61: ... and secondary winding of transformer TR Indoor PCB Ass y or switch Ass y is defective OK OK Measure resistance of indoor and or fan motor winding FM Measure resistance of compressor motor winding CM OK Measure coil resistance of power relay PR Replace the fuse If fuse has been blown OK Try to run with another remote control unit First remote control unit is defective Check for residue buildup on ...

Page 62: ... voltage appears Outdoor PCB Ass y is defective OK OK NO Is room temperature too low Try to lower setting temperature by temperature setting button button Outdoor unit still does not run Remote control unit is defective Try to run using another remote control unit COOL OK NO Is room temperature too high Try to raise setting temperature by temperature setting button button Outdoor unit still does n...

Page 63: ...re resistance of flap motor winding Fan cannot be turned OK Check fan rotation Turn fan gently once or twice by hand Check fan casing foreign matter on inside Fan motor burnout or foreign matter in bearings Remove foreign matter or repair Repair or replace Measure resistance of indoor fan motor winding Check fan motor capacitor ...

Page 64: ... Temperature of compressor is abnormally high Refrigerant gas shortage Charge refrigerant gas R22 Rotor may be locked up Measure Power supply voltage The voltage is too low No Fan cannot be turned OK Check fan rotation Turn fan gently once or twice by hand Check fan casing foreign matter on inside Fan motor burnout or foreign matter in bearings Remove foreign matter or repair Repair or replace Mea...

Page 65: ...y is defective Check voltage between terminals No 3 and No 5 at terminal plate DC 24V No voltage appears Outdoor PCB Ass y is defective OK Remote control unit may be defective Measure resistance of 4 way valve s winding Receiver in lamp Ass y may be defective COOL HEAT Check voltage between terminals No 3 and No 5 at terminal plate 0V HEAT COOL ...

Page 66: ...re Possibility of gas shortage YES Check position of remote control unit Cool or warm air from air conditioner reaches position directly Change position of remote control unit Wide and narrow tubes between indoor unit and outdoor unit are insulated Insulate both wide and narrow tubes separately and then tape together Measure temperature of suction and discharge air of air conditioner Charge refrig...

Page 67: ...he air conditioner will be in the following conditions as the controller tries to detect extremely low room temperature In Cooling mode The air conditioner soon stops and will not start again Thermo OFF Neither outdoor fan nor compressor runs B Short When thermistor is short the air conditioner will be in the following conditions as the controller tries to detect extremely high room temperature In...

Page 68: ... 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 resis tance by placing a probe on each terminal screw where power supply lines are connected on the terminal plate Fig 2 10 1 4 Measurement of Insulation Resistance for Electrical Parts Disconnect the lead wires of the desired electric part from terminal plate capacit...

Page 69: ...s and then place a probe on the capacitor terminals as shown in Fig 7 Observe the deflection of the pointer setting the resistance measuring range of the multime ter to the maximum value The capacitor is good if the pointer bounces to a great extent and then gradually returns to its original position The range of deflection and deflection time differ according to the capacity of the capacitor Fuse...

Page 70: ... temp thermistor Flap motor Lamp Ass y Terminal base Controller PCB Ass y Transformer SEC PRY Indoor Unit KHS1852 1 6 5 4 3 2 G Coil temp thermistor Room temp thermistor Flap motor Lamp Ass y Terminal base Controller A PCB Ass y A Controller B PCB Ass y B Transformer SEC PRY Indoor Unit KHS0951 KHS1251 ...

Page 71: ...pressor motor capacitor Fan motor capacitor Power relay Terminal base Controller PCB Ass y L1 L2 Solenoid coil 4 way valve Defrost thermostat Fan Motor Electric compornet box Crankcase heater Compressor motor Thermostat Low temp cut off FM CM Electric Parts Parts Layout in Unit Outdoor Unit CH0951 CH1251 CH1852 ...

Page 72: ...68 INSTRUCTION MANUAL KHS0951 CH0951 KHS1251 CH1251 KHS1852 CH1852 APPENDIX ...

Page 73: ...ting air in a sweeping motion around the room and providing comfort in every corner Automatic Switching between Cooling and Heating This unit automatically switches between cooling operation and heating operation according to the difference between the room temperature and the temperature setting Hot Start Heating System Right from the start the air is warm and comfortable This system prevents any...

Page 74: ...Tips for Energy Saving 25 Troubleshooting 26 Operating Range 26 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 the cabinet Model No Serial No Date of purchase Dealer s address Phone number Alert Symbols The following symbols used in this manual alert you to ...

Page 75: ...ugh the supply wiring 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 Use this only for its intended purpose as described in this Instruction Manual Never us...

Page 76: ...ut of the air conditioner through the air outlet Remote Control Unit The wireless remote control unit controls power on off operation mode selection temperature fan speed timer setting night setback and air sweeping Refrigerant Tubes The indoor and outdoor units are connected by copper tubes through which refrigerant gas flows Drain Hose Moisture in the room condenses and drains off through this h...

Page 77: ...position for normal operation OPERATION lamp This lamp lights when the system is in the continuous HEAT DRY and COOL mode TIMER lamp This lamp lights when the system is being controlled by the timer ON OFF TEST OPERATION lamp Operation selector Remote control receiver INDOOR UNIT KHS1852 TIMER STANDBY lamp lamp IMPORTANT Avoid using radio equipment such as mobile phones near within 1 m of the indo...

Page 78: ...etting 60 88 F When set to 82 F Current temperature indication 4 Timer 12 hour ON Timer 12 hour OFF Timer 1 hour OFF Timer 5 NIGHT SETBACK 6 Confirmation of transmission 7 Flap Angle indication Sweep indication ON Displayed when transmitting data Displayed when setting temperature Displayed when setting timer OFF 1HR Symbols 7 OI 202 09EG ...

Page 79: ...ntrol unit automatically adjusts the set temperature to save energy TEMP setting buttons Press the button to increase the temperature setting Press the button to reduce the temperature setting ON OFF operation button This button is for turning the air conditioner on and off TIMER ON button ON The air conditioner starts at the set time TIMER OFF button OFF The air conditioner stops at the set time ...

Page 80: ...n in the manual mode hold down the FLAP button FAN SPEED selector button The air conditioner automatically decides the fan speed High fan speed Medium fan speed Low fan speed 1 HR TIMER button 1 hour off timer 1HR When you press this button regardless of whether the unit is operating or stopped the unit operates for one hour and then shuts down ACL button All clear Puts the remote control unit int...

Page 81: ...rated either from a non fixed position or from 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 or other places where it is covered More than 26 feet 8 m away from the air conditioner In the path of the air conditioner s airstream Where it may become extremely hot ...

Page 82: ...ing 1 Momentarily hold the remote control unit at the desired mounting position 2 Confirm that the air conditioner responds correctly when you press keys on the remote control from that position 3 After confirming correct operation use a screwdriver to screw the mounting screw into the wall 4 Remove the batteries of the remote control unit 5 Use a screwdriver to screw the remote control unit secur...

Page 83: ...e desired temperature simply by pressing the ON OFF operation button STEP 1 Press the MODE selector to select STEP 2 Press the ON OFF operation button To stop the air conditioner press the ON OFF operation button again NOTE To change the temperature setting press the temperature setting buttons and change the setting to the desired temperature The temperature setting changes by two degrees each ti...

Page 84: ...ature setting Although the fan speed is set automatically you can change the fan speed by pressing the FAN SPEED selector button To stop the air conditioner press the ON OFF operation button again TEMP To raise the temperature setting To lower the temperature setting 13 OI 202 15EG ...

Page 85: ...select the desired mode For heating operation For dehumidifying operation For cooling operation STEP 2 To start the air conditioner press the ON OFF operation button STEP 3 Press the TEMP setting buttons to change the temperature setting to the desired temperature Adjustable temperature range 88 F max 60 F min STEP 4 Set the FAN SPEED selector button to the setting you want NOTE If the fan speed i...

Page 86: ...itioner automatically controls the fan speed when the mode is selected When the air conditioner starts operating the difference between the room temperature and the set temperature is detected by the microcomputer which then automatically switches the fan speed to the most suitable level Cooling and DRY mode When difference between room temperature and set temperature is FAN SPEED 4 F and over Hig...

Page 87: ...or saving energy Press the NIGHT SETBACK button while the air conditioner is operating The mark appears in the display To cancel the night setback function press the NIGHT SETBACK button again 1HR TIMER ON OFF TEMP FAN SPEED MODE ON OFF SET CANCEL NIGHT SETBACK ACL BATTERIES SET TEMP FLAP 16 OI 202 18EG ...

Page 88: ...rt This function is convenient when gentle cooling is needed Setting temperature Press the NIGHT SETBACK button 2 F 2 F 30 min 30 min Time B In Heating Mode When the night setback mode is selected the air conditioner automatically lowers the temperature setting 4 F when 30 minutes have passed after the selection was made and then another 4 F after another 30 minutes have passed regardless of the i...

Page 89: ...nutes This interval will vary slightly depending upon the outdoor temperature and the way in which frost forms STANDBY lamp For several minutes after the start of heating operation the indoor fan will not start running until the indoor heat exchanger coil has warmed up sufficiently This is because the COLD DRAFT PREVENTION SYSTEM is operating During this period the STANDBY lamp remains lit The STA...

Page 90: ... is counting down press the SET button Cancellation procedure Press the CANCEL button 2 TIMER OFF mode Example After the length of time set for TIMER OFF elapses the unit stops operating OFF H The display depicted at left indicates that the air conditioner will stop operating in five hours Setting procedure STEP 1 Press the TIMER OFF button For example to set the timer to turn off the air conditio...

Page 91: ...function is operating the OFF Timer is cancelled and the unit stops operating one hour later 2 Combining the 1 Hour OFF Timer and 12 Hour ON Timer By combining the 1 Hour OFF Timer and 12 Hour ON Timer it is possible to have the unit operate for just one hour from the present time and then have it switch on again later at a time specified by you Example Having the unit operate for just one hour fr...

Page 92: ...illustration use the FLAP button to set the airflow direction within the range used during the heating cooling or dehumidifying operation NOTE The flap automatically closes when the unit is off During the heating operation the fan speed will be very low and the flap will be in the horizontal position position 6 until the air being blown out of the unit begins to warm Once the air warms up the flap...

Page 93: ...ean it This will damage the internal components and cause an electric shock hazard Casing and Grille Indoor Unit Clean the casing and grille of the indoor unit with a vacuum cleaner brush or wipe them with a clean soft cloth If these parts are stained use a clean cloth moistened with a mild liquid detergent When cleaning the grille be careful not to force the vanes out of place CAUTION 1 Never use...

Page 94: ...cleaner to remove light dust If there is sticky dust on the filter wash the filter in lukewarm soapy water rinse it in clean water and dry it How to replace the anti mold filter 1 With the FRONT mark facing you slide the anti mold filter up into the unit and then lower the handle into the groove on the unit 2 After installing the anti mold filter press the locations marked by the arrows and close ...

Page 95: ...s Otherwise there is a risk of suffocation in extreme cases How to install the air cleaning filter The air cleaning filter needs to be installed behind the anti mold filter 1 Remove the anti mold filter 2 To mount the STK F4B set the air clean filter sold separately at the mounting position with the black side facing the rear To mount the STK ARF4B mount the air clean filter in the position shown ...

Page 96: ...wipe away any remaining moisture Neutral detergent may be used to remove stubborn dirt Then rinse thoroughly with water and wipe away any remaining moisture 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 room Use sunshades blinds or curtains If the walls and ceiling of the ...

Page 97: ... are open 3 Shut them to keep the heat or cold out 4 Obstacle near air intake or air discharge port 4 Remove it to ensure good airflow 5 Thermostat is set too high for cooling or too low for heating 5 Set the temperature lower or higher 6 Outdoor temperature is too low 6 Consult your dealer or try to use a back up heater Clicking sound is heard from the air conditioner In heating or cooling operat...

Page 98: ...arts or Service Contact SANYO FISHER SERVICE CORPORATION A DIVISION OF SANYO LOGISTICS CORPORATION 1411 West 190th Street Suite 800 Gardena CA 90248 U S A 50 Beth Nealson Drive Toronto Ontario M4H 1M6 CANADA ...

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Sanyo CH0951, Technical & Service Manual

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