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Sanyo CH1852 manual

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Table of contents for the manual

  • Page 1

    REFERENCE NO. SM 700447 W TECHNICAL & SERVICE MANUAL KHS0951 / CH0951 KHS1251 / CH1251 KHS1852 / CH1852 SPLIT SYSTEM 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 Un[...]

  • Page 2

    i IMPOR T ANT! Please Read Bef ore Star ting This air conditioning system meets strict safety and operating standards. As the 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 ins[...]

  • Page 3

    ii T able of Contents P age 1. OPERA TING RANGE ................................................................................................................ 1 2. SPECIFICA TIONS 2-1. Unit Specifications ............................................................................................................ 2 2-2. Major Component Specificati[...]

  • Page 4

    iii 10. CHECKING 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 ...............................[...]

  • Page 5

    1 1. OPERA TING RANGE Temperature 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. 000-111 SM (1-17) 00.3.17 11:44 AM y[W 1[...]

  • Page 6

    2 DATA SUBJECT TO CHANGE WITHOUT NOTICE. Remarks: Rating conditions are Cooling: 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 temperature 47°F D.B . / 43°F W.B. 2. SPECIFICA TIONS 2-1. Unit Specifications (1) Indoor unit KHS0951 Outdoor uni[...]

  • Page 7

    3 (2) Indoor unit KHS1251 Outdoor unit CH1251 DATA SUBJECT TO CHANGE WITHOUT NOTICE. Remarks: Rating conditions are Cooling: 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 temperature 47°F D.B . / 43°F W.B. Features Controls / Temperature con[...]

  • Page 8

    4 (3) Indoor unit KHS1852 Outdoor unit CH1852 DATA SUBJECT TO CHANGE WITHOUT NOTICE. Remarks: Rating conditions are Cooling: 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 temperature 47°F D.B . / 43°F W.B. Features Controls / Temperature con[...]

  • Page 9

    5 2-2. Major Component Specifications 2-2-1. Indoor Unit (1) Indoor unit KHS0951 DATA SUBJECT TO CHANGE WITHOUT NOTICE. Control PCB Part No. POW-KHS095A, POW-KHS095B Controls Microprocessor Control circuit fuse AC 115V – 3A Flap Motor Type Stepping motor Model MP24GA1 Rating DC12V Coil resistance (ambient temp. 77°F (25°C)) Ω WHT – BLU (res[...]

  • Page 10

    6 (2) Indoor unit KHS1251 DATA SUBJECT TO CHANGE WITHOUT NOTICE. Control PCB Part No. POW-KHS125A / POW-KHS095B Controls Microprocessor Control circuit fuse AC 115V – 3A Flap Motor Type Stepping motor Model MP24GA1 Rating DC12V Coil resistance (ambient temp. 77°F (25°C)) Ω WHT – BLU (respectively 4 wires): 380 ± 7% Heat Exchanger Coil Coil[...]

  • Page 11

    7 (3) Indoor unit KHS1852 DATA SUBJECT TO CHANGE WITHOUT NOTICE. Control PCB Part No. POW-KHS1852 Controls Microprocessor Control circuit fuse AC 208 / 230V – 3A Flap Motor Type Stepping motor Model MP24GA2 Rating DC12V Coil resistance (ambient temp. 77°F (25°C)) Ω Each terminals (1–2, 1–3, 1–4, 1–5) : 400 ± 7% Heat Exchanger Coil Co[...]

  • Page 12

    8 DATA SUBJECT TO CHANGE WITHOUT NOTICE. 2-2-2. Outdoor Unit (1) Outdoor unit CH0951 Control PCB Part No. POW-CH095 Controls — Control circuit fuse — Compressor Type Rotary (Hermetic) Compressor model C-1R75H2R Nominal output W 750 Compressor oil … Amount cc SUNISO 4GSD-T … 350 Coil resistance (ambient temp. 68°F (20°C)) Ω C – R: 0.84[...]

  • Page 13

    9 DATA SUBJECT TO CHANGE WITHOUT NOTICE. (2) Outdoor unit CH1251 Control PCB Part No. POW-CH095 Controls — Control circuit fuse — Compressor Type Rotary (Hermetic) Compressor model C-R95H2E Nominal output W 950 Compressor oil … Amount cc SUNISO 4GSD-T … 570 Coil resistance (ambient temp. 68°F (20°C)) Ω C – R: 0.576 C – S: 3.070 Safe[...]

  • Page 14

    10 DATA SUBJECT TO CHANGE WITHOUT NOTICE. (3) Outdoor unit CH1852 Control PCB Part No. POW-CH095 Controls — Control circuit fuse — Compressor Type Rotary (Hermetic) Compressor model C-R132H6D Nominal output W 1,300 Compressor oil … Amount cc SUNISO 4GSD-T … 500 Coil resistance (ambient temp. 68°F (20°C)) Ω C – R: 1.442 C – S: 2.430 [...]

  • Page 15

    11 2-3. Other Component Specifications 2-3-1. Indoor Unit (1) Indoor unit KHS0951 Transformer ATR-T4 Rating Primary AC 115V, 60Hz Secondary 19V, 0.5A Thermistor (Coil sensor) DTN-TKS131B Resistance k Ω 32°F (0°C) 15 ± 2% Thermistor (Room sensor in lamp Ass’y) DTN-TKS134B Resistance k Ω 77°F (25°C) 5 ± 3% Thermistor (Coil sensor) DTN-TKS[...]

  • Page 16

    12 2-3-2. Outdoor Unit DATA SUBJECT TO CHANGE WITHOUT NOTICE 4-way Valve (Solenoid coil) LB69001 (Coil), V26-9201 (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 (°[...]

  • Page 17

    13 DATA SUBJECT TO CHANGE WITHOUT NOTICE 4-way Valve (Solenoid coil) LB69005 (Coil), V26-9201 (Valve) Coil rating AC 208-230V, 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°F[...]

  • Page 18

    14 31-11/16 (805) 10-5/8 (270) 6-31/32 (177) 3-29/32 (99.5) 2-5/16 (58.5) 1-5/8 (41.0) 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 D A T A 3-1. Unit 3-1-[...]

  • Page 19

    15 (2) Indoor unit KHS1852 11-7/32 (285) 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) 000-111 SM (1-17) 00.3.17 11:[...]

  • Page 20

    16 Air discharge Air intake 5/8" 21-1/4" 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 valv e 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) Outdo[...]

  • Page 21

    17 (2) Outdoor 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 valv e Wide tube service valve ø6.35 (1/4") ø15.88 (5/8") 15/32" 12-19/32" Unit: inch (mm) 000-111 SM (1-17) 00.3.17 [...]

  • Page 22

    18 4. REFRIGERANT FLO W DIA GRAM 4-1. Refrigerant Flow Diagram Indoor unit KHS0951 / KHS1251 Outdoor unit CH0951 / CH1251 Compressor 4-way valve Accumulator Wide tube service valve Wide tube O.D. 3/8" (ø9.52 mm) 1/2" (ø12.7 mm) Narrow tube service valve Narrow tube Heat exchanger Heat exchanger Muffler Capillary tube Strainer Cooling cy[...]

  • Page 23

    19 5. PERFORMANCE D A T A 5-1. P erformance Charts ■ Cooling Characteristics 115 V Indoor inlet air D.B. temp. ¡ F ( ¡ C) 13 12 11 10 9 8 7 6 70 (21.1) 80 (26.7) 90 (32.2) 100 (37.8) 110 (43.3) 120 (48.9) Outdoor inlet air D.B. temp. ¡ F ( ¡ C) Operating current (A) 115 V Indoor inlet air D.B. temp. ¡ F ( ¡ C) 13 12 11 10 9 8 7 6 20 (–6.6[...]

  • Page 24

    20 ■ Cooling Characteristics 115 V Indoor inlet air D.B. temp. ¡ F ( ¡ C) 14 13 12 11 10 9 8 7 70 (21.1) 80 (26.7) 90 (32.2) 100 (37.8) 110 (43.3) 120 (48.9) Outdoor inlet air D.B. temp. ¡ F ( ¡ C) Operating current (A) 115 V Indoor inlet air D.B. temp. ¡ F ( ¡ C) 14 13 12 11 10 9 8 7 20 (–6.6) 30 (–1.1) 40 (4.4) 50 (10.0) 60 (15.6) 70 [...]

  • Page 25

    21 ■ Cooling Characteristics 230 V Indoor inlet air D.B. temp. ¡ F ( ¡ C) 12 11 10 9 8 7 6 5 70 (21.1) 80 (26.7) 90 (32.2) 100 (37.8) 110 (43.3) 120 (48.9) Outdoor inlet air D.B. temp. ¡ F ( ¡ C) Operating current (A) 230 V Indoor inlet air D.B. temp. ¡ F ( ¡ C) 12 11 10 9 8 7 6 5 20 (–6.6) 30 (–1.1) 40 (4.4) 50 (10.0) 60 (15.6) 70 (21.[...]

  • Page 26

    22 5-2. Air Thr ow Distance Char t Horizontal distance (ft.) Axis air velocity (ft./sec.) Vertical distance (ft.) Room air temp. : 70 ¡ F (21.1 ¡ C) Fan speed : High 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 : Fl[...]

  • Page 27

    23 Horizontal distance (ft.) Axis air velocity (ft./sec.) Vertical distance (ft.) Room air temp. : 70 ¡ F (21.1 ¡ C) Fan speed : High 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 veloci[...]

  • Page 28

    24 Horizontal distance (ft.) Axis air velocity (ft./sec.) Vertical distance (ft.) Room air temp. : 70 ¡ F (21.1 ¡ C) Fan speed : High 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 veloci[...]

  • Page 29

    25 5-3. Cooling Capacity 115V Single phase 60 Hz RATING CAPACITY : 9,100 BTU/h AIR FLOW RATE: 2 7 0 CFM EVAPORATOR CONDENSER ENT.TEMP.°F (°C ) AMBIENT TEMP °F (°C) WB DB 75 85 9 5 105 115 (23.9) (29.4) (35.0) (40.6) (46.1) T C 9,220 8,770 8,260 7,690 7,050 C I 0.64 0.7 0.76 0.82 0.9 72(22.2) SH C 6,720 6,490 6,240 5,960 5,650 59 76(24.4) S HC 7[...]

  • Page 30

    26 Indoor Unit KHS1251 Outdoor Unit CH1251 115 V Single phase 60 Hz y RATING CAPACITY : 11,700 BTU/h AIR FLOW RATE: 3 3 0 CFM EVAPORATOR CONDENSER ENT.TEMP.°F (°C) AMBIENT TEMP °F (°C) WB DB 75 85 9 5 105 115 (23.9) (29.4) (35.0) (40.6) (46.1) T C 11,850 11,280 10,620 9,890 9,070 C I 0.89 0.98 1.06 1.15 1.26 72(22.2) SH C 8,440 8,140 7,800 7,43[...]

  • Page 31

    27 Indoor Unit KHS1852 Outdoor Unit CH1852 208 V Single phase 60 Hz RATING CAPACITY : 17,000 BTU/h AIR FLOW RATE: 3 9 0 CFM EVAPORATOR CONDENSER ENT.TEMP.°F (°C) AMBIENT TEMP °F (°C) WB DB 75 85 9 5 105 115 (23.9) (29.4) (35.0) (40.6) (46.1) T C 17,220 16,390 15,440 14,370 13,180 C I 1.26 1.38 1.5 1.62 1.79 72(22.2) SH C 11,770 11,290 10,750 10[...]

  • Page 32

    28 Indoor Unit KHS1852 Outdoor Unit CH1852 230 V Single phase 60 Hz RATING CAPACITY : 17,000 BTU/h AIR FLOW RATE: 3 9 0 CFM EVAPORATOR CONDENSER ENT.TEMP.°F (°C) AMBIENT TEMP °F (°C) WB DB 75 85 95 105 115 (23.9) (29.4) (35.0) (40.6) (46.1) T C 17,220 16,390 15,440 14,370 13,180 C I 1.26 1.38 1.5 1.62 1.79 72(22.2) SH C 11,770 11,290 10,750 10,[...]

  • Page 33

    29 Outdoor temperature ( ¡ F DB) 0 10 20 30 40 50 60 70 80 90 100 110 120 Heating capacity ratio (%) 47 50 60 40 30 20 17 5-4. Heating Capacity Indoor unit KHS0951 / KHS1251 / KHS1852 Outdoor unit CH0951 / CH1251 / CH1852 1) ● … Point of rating condition Black dot in the chart indicates the following rating condition. Indoor: 70°F (21.1°C) D[...]

  • Page 34

    30 6. ELECTRICAL D A T A 6-1. Electrical Characteristics COOLING 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 7.4 8.5 Power Input kW 0.034 0.081 0.775 0.89 Full Load Conditions Running Amps. A 0.40 0.70 9.1 10.2 Power Input kW 0.034 0.081 0.98[...]

  • Page 35

    31 COOLING 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 9.4 10.5 Power Input kW 0.034 0.081 1.085 1.20 Full Load Conditions Running Amps. A 0.40 0.70 11.8 12.9 Power Input kW 0.034 0.081 1.365 1.48 Rating Conditions : Indoor Air Temperature 80[...]

  • Page 36

    32 COOLING 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 6.86 / 7.41 7.6 / 8.1 Power Input kW 0 .04 7 / 0.045 0.113 / 0.095 1.54 / 1.52 1.70 / 1.66 Full Load Conditions Running Amps. A 0.25 / 0.23 0.49 / 0.46 8.8 / 9.7 9.5 /[...]

  • 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. 000-111 SM (18-68) 00.3.17 11:49 AM y[W 33[...]

  • 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. 000-111 SM (18-68) 00.3.17 11:49 AM y[W 34[...]

  • 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. 000-111 SM (18-68) 00.3.17 11:49 AM y[W 35[...]

  • 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. 000-111 SM (18-68) 00.3.17 11:49 AM y[W 36[...]

  • Page 41

    37 (5) Printed circuit board POW-KHS095A (for KHS0951) Top view Bottom view 000-111 SM (18-68) 00.3.17 11:49 AM y[W 37[...]

  • Page 42

    38 (6) Printed circuit board POW-KHS125A (for KHS1251) Top view Bottom view 000-111 SM (18-68) 00.3.17 11:49 AM y[W 38[...]

  • Page 43

    39 (7) Printed circuit board POW-KHS095B (for KHS0951 and KHS1251) Top view Bottom view 000-111 SM (18-68) 00.3.17 11:49 AM y[W 39[...]

  • Page 44

    40 (8) Printed circuit board POW-KHS1852 (for KHS1852) Top view Bottom view 000-111 SM (18-68) 00.3.17 11:49 AM y[W 40[...]

  • Page 45

    41 (9) Printed circuit board POW-CH095 (for CH0951, CH1251 and CH1852) Top view 000-111 SM (18-68) 00.3.17 11:49 AM y[W 41[...]

  • Page 46

    42 7. INST ALLA TION INSTR UCTIONS 7-1. Installation Site Selection 7-1-1. Indoor Unit WARNING To prevent abnormal heat generation and the possibility of fire, do not place obsta- cles, enclosures and grilles in front of or surrounding the air conditioner in a way that may block air flow. Max. Allowable Tubing Limit of Tubing Limit of Elevation Req[...]

  • Page 47

    43 Fig. 5b 7-1-2. Outdoor Unit AVOID: ● heat sources, exhaust fans, etc. (Fig. 4) ● damp, humid or uneven locations. DO: ● choose a place as cool as possible. ● choose a place that is well ventilated. ● allow enough room around the unit for air intake/ exhaust and possible maintenance. (Fig. 5a) Outdoor unit Hot air Heat source Exhaust fa[...]

  • Page 48

    44 7-2. Remote Control Unit Installation P osition 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: ● In direct sunlight ● Behind a curtain or other place where it is covered [...]

  • Page 49

    45 7-3. Address Switc hes If you are installing more than 1 indoor unit (up to 2) in the same room, it is necessary for you to assign each unit its own address so each can be operated by its own remote control unit. You assign the addresses by matching the switch positions of each indoor unit with the switch positions of its remote control unit. Th[...]

  • Page 50

    46 7-4. Recommended Wire Length and Diameter Regulations on wiring diameter differ from locality to locality. For field wiring requirements, please refer to your local electrical codes. Carefully observe these reg- ulations when carrying out the installation. Refer to the wiring system diagram (Fig. 11) Refer to your local codes or in the absence o[...]

  • Page 51

    47 8. FUNCTION 8-1. Room T emperature Control ■ Cooling ● Room temperature control is obtained by cycling the compressor ON and OFF under control of the room tem- perature sensor in the remote control unit. ● The room temperature (and other information) is transmitted every 3 minutes by the remote control unit to the controller in the indoor [...]

  • Page 52

    48 ■ Heating ● Room temperature control is obtained by cycling the compressor ON and OFF under control of the room tem- perature sensor in the remote control unit. ● The room temperature (and other information) is transmitted every 3 minutes by the remote control unit to the controller in the indoor unit. ● The control circuit will not atte[...]

  • Page 53

    49 8-2. Dry Operation (Dehumidification) ● Dry operation uses the ability of the cooling cycle to remove moisture from the air, but by running at low level to dehumidify without greatly reducing the room temperature. The air conditioner repeats the cycle of turning ON and OFF automatically as shown in the chart below according to the room tempera[...]

  • Page 54

    50 8-4. Freeze Prevention (Cooling) ● This function prevents freezing of the indoor heat exchange coil. ● When the compressor has been running for 10 minutes or more and the temperature of the indoor heat exchange coil falls below 30°F, the control circuit stops the compressor for at least 6 minutes. The compressor does not start again until t[...]

  • Page 55

    51 8-6. Cold draft Prevention (Heating) ● This function controls indoor fan speed so a strong draft of cold air will not blow out before the indoor heat exchange 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 swi[...]

  • Page 56

    52 8-7. Defr osting Operation (Heating) ■ Defrosting Flowchart Compressor ON Indoor heat exchanger coil temperature drops 1.4 ¡ F per 6 minutes and it repeats 3 times in succession. Integrated operating time of compressor is more than 3 hours. Defrosting begins. Cold-draft prevention Temperature of outdoor heat exchange coil is higher than 54 ¡[...]

  • Page 57

    53 ■ Defrosting Mode Timing Chart *1: Refer to "8-6 Cold Draft Prevention". 8-8. Low T emperature Cutff (Heating) ● This function protect the compressor from being damaged due to flow back of the liquid refrigerant to the com- pressor when the outdoor temperature is very low. ● Low ambient operation during heating can cause the outd[...]

  • Page 58

    54 9. TR OUBLESHOO TING 9-1. Chec k before and after tr oubleshooting 9-1-1. Check po wer supply wiring. ● Check that power supply wires are correctly connected to terminals No. 7 (L1) and No. 8 (L2) on the terminal plate in the outdoor unit. 9-1-2. Check inter-unit wiring. ● Check that inter-unit wiring is correctly connected to the indoor uni[...]

  • Page 59

    55 9-2. Air conditioner does not operate . 9-2-1. Circuit breaker trips (or fuse b lows). A. When the circuit breaker is set to ON, it is tripped soon. (Resetting is not possible.) ● There is a possibility of ground fault. ● Check insulation resistance. If resistance value is 2M ½ or less, insulation is defective (“NO”). Measure insulation[...]

  • Page 60

    56 B. Circuit breaker trips in several minutes after turning the air conditioner on. ● There is a possibility of short circuit. 9-2-2. Neither indoor nor outdoor unit runs. A. Power is not supplied. B. Check "OPERATION selector" switch in the indoor unit. YES NO • OPERATION selector switch is set in ON position. Set OPERATION selector[...]

  • Page 61

    57 C. Check remote control unit. D. Check fuse on the indoor PCB Ass'y. E. Check TIMER on the remote control unit. • Timer is turned ON. Check to see if is displayed on remote control. YES Cancel the timer mode. ON OK OK • Check fuse on indoor PCB Ass'y for continuity. (F) • Check operation lamp to see if light is ON. Light is OFF ?[...]

  • Page 62

    58 9-2-3. Only outdoor unit does not run. A. Check setting temperature. B. Check PCB Ass'y in either indoor or outdoor unit. 9-2-4. Only indoor unit does not run. • Indoor PCB Ass'y is defective. • Indoor PCB Ass'y is defective. • Check voltage between terminals No. 3(+) and No. 4 at terminal plate. (DC 24V) No voltage appears.[...]

  • Page 63

    59 9-3. Some par t of air conditioner does not operate. 9-3-1. Only indoor fan does not run. 9-3-2. Only flap motor does not run. • Measure 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 [...]

  • Page 64

    60 9-3-4. Only outdoor fan does not run. 9-3-5. Only compressor does not run. • Check compressor motor capacitor. • Measure resistance of PTC thermistor. • Measure resistance of compressor motor winding. • Measure resistance of power relay. (PR) NO YES YES Overload relay is working. YES Temperature of compressor is abnormally high. Refriger[...]

  • Page 65

    61 9-4. Air conditioner operates, b ut abnormalities are obser ved. 9-4-1. Operation does not switc h from HEA T to COOL (or COOL to HEA T). • 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. OK • Remote control unit ma[...]

  • Page 66

    62 9-4-2. P oor cooling or heating. 9-4-3. Excessive cooling or heating. NO NO • Set temperature is suitable. Set temperature to higher or lower value using temperature setting buttons of the remote control unit. • Remote control unit is placed where it can detect room temperature properly. Change position of remote control unit. Air filter is [...]

  • Page 67

    63 9-5. If a sensor is defective. 9-5-1. Indoor coil temp. thermistor (TH1) is defective . A. Open When thermistor opens, the air conditioner will be in the following conditions as the controller tries to detect extremely low indoor coil temperature. In Cooling mode: Function of freeze prevention continues to work. That is, the controller turns bot[...]

  • Page 68

    64 10. CHECKING ELECTRICAL COMPONENTS 10-1. Measurement of Insulation Resistance ● The insulation is in good condition if the resistance exceeds 2M ½ . 10-1-1. P ower Suppl y Wires Clamp the ground wire of the power supply wires with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on either of the [...]

  • Page 69

    65 10-2. Chec king Continuity of Fuse on PCB Ass'y ● Remove the PCB Ass’y from the electrical compo- nent box. Then pull out the fuse from the PCB Ass’y. (Fig. 5) ● Check for continuity using a multimeter as shown in Fig. 6. 10-3. Chec king Motor Capacitor Remove the lead wires from the capacitor terminals, and then place a probe on th[...]

  • Page 70

    66 11. ARRANGEMENT OF ELECTRICAL COMPONENT 16 5 4 3 2 G Fan motor capacitor Coil temp. thermistor Room temp. thermistor Flap motor Lamp Ass'y Terminal base Controller (PCB Ass'y) Transformer SEC. PRY. Indoor Unit KHS1852 16 5 4 3 2 G Coil temp. thermistor Room temp. thermistor Flap motor Lamp Ass'y Terminal base Controller A (PCB Ass[...]

  • Page 71

    67 12 3 4 6 58 7 NO COM NC PR TH UNIT FM1 FM G SUPPLY 20S CONTROLLER PTC Thermistor (Only for 115V models) Compressor 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 te[...]

  • Page 72

    68 INSTR UCTION MANU AL KHS0951 + CH0951 KHS1251 + CH1251 KHS1852 + CH1852 APPENDIX 000-111 SM (18-68) 00.3.17 11:49 AM y[W 68[...]

  • Page 73

    Features This air conditioner is equipped with cooling, heating and drying functions. Details on these functions are provided below; refer to these descriptions when using the air conditioner . • Microprocessor Controlled Operation The interior compartment of the remote control unit contains several features to facilitate automatic operation, eas[...]

  • Page 74

    Contents Page Features .................................................................................................................. 2 Product Information .............................................................................................. 3 Alert Symbols ...............................................................................[...]

  • Page 75

    Installation Location • We recommend that this air conditioner be installed properly by qualified installation technicians in accordance with the Installation Instructions provided with the unit. • Before installation, check that the voltage of the electric supply in your home or office is the same as the voltage shown on the nameplate. • Do [...]

  • Page 76

    Names of Parts NOTE This illustration is based on the external appearance of a standard model. Consequently, the shape may differ from that of the air conditioner which you have selected. This air conditioner consists of an indoor unit and an outdoor unit. Y ou can control the air conditioner with the remote control unit. Air Intakes Air from the r[...]

  • Page 77

    Unit Display and Operation Selector Remote control receiver This section picks up infrared signals from the remote control unit (transmitter). Operation selector ON position This position is for operating the air conditioner with the wireless remote control unit. Set the selector normally in this position. OFF position Switch the selector to the OF[...]

  • Page 78

    Remote Control Unit (Display) SET TEMP. ON OFF 1 HR. H (1) Operation mode AUTO ....................................... HEA T ........................................ MILD DRY................................ COOL ....................................... (2) Fan speed AUTO ....................................... HIGH ..................................[...]

  • Page 79

    Remote Control Unit NOTE The illustration above pictures the remote control unit after the cover has been lowered and removed. T ransmitter When you press the buttons on the remote control unit, the mark appears in the display and the setting changes are transmitted to the receiver in the air conditioner . Display Information on the operating statu[...]

  • Page 80

    Remote Control Unit (continued) MODE selector button Green or red (AUTO) Red (HEA T) Orange (DRY) Green (COOL) Use this button to select the AUTO, HEAT, DRY and COOL mode. : When this setting is selected, the air conditioner calculates the difference between the thermostat setting and the room temperature and automatically switches to the “COOL?[...]

  • Page 81

    Using the Remote Control Unit How to Install Batteries NOTE • The batteries last about six months, depending on how much you use the remote control unit. Replace the batteries when the remote control unit' s display fails to light, or when the remote control cannot be used to change the air conditioner’ s settings. • Use two fresh leak-p[...]

  • Page 82

    Using the Remote Control Unit (continued) Mounting the Remote Control Unit Mounting on a wall A. Removable mounting 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, [...]

  • Page 83

    Operation with the Remote Control Unit 1. Automatic Operation NOTE Check that the circuit breaker on the power panel is turned on and that the operation selector of the indoor unit is in the ON position. Once the mode is selected and the unit is preset by following the steps below , you can have the air conditioner automatically bring the room to t[...]

  • Page 84

    Operation with the Remote Control Unit (continued) Press TEMP . to change the temperature setting. • Although the fan speed is set automatically , you can change the fan speed by pressing the F AN SPEED selector button. T o stop the air conditioner , press the ON/OFF operation button again. TEMP. T o raise the temperature setting T o lower the te[...]

  • Page 85

    Operation with the Remote Control Unit (continued) 2. Manual Operation NOTE Check that the circuit breaker on the power panel is turned on and that the operation selector of the indoor unit is in the ON position. If the automatic operation settings of the unit do not meet your needs, press the setting buttons as described below and change the setti[...]

  • Page 86

    Operation with the Remote Control Unit (continued) NOTE • This appliance has a built-in 5-minute time delay circuit to ensure reliable operation. When the operation button is pressed, the compressor will start running within three minutes. In the event of power failure, the unit will stop. When the power is restored, the unit will restart automat[...]

  • Page 87

    Operation with the Remote Control Unit (continued) 4. Night Setback Mode The Night Setback Mode is used for saving energy . Press the NIGHT SETBACK button while the air conditioner is operating. The mark appears in the display . T o cancel the night setback function, press the NIGHT SETBACK button again. 1HR. TIMER ON OFF TEMP. FAN SPEED MODE ON OF[...]

  • Page 88

    Operation with the Remote Control Unit (continued) 17 OI-202-19EG oi202000 A. In Cooling and DRY Mode: ( and ) When the night setback mode is selected, the air conditioner automatically raises the temperature setting 2 ° F when 30 minutes have passed after the selection was made, and then another 2 ° F after another 30 minutes have passed, regard[...]

  • Page 89

    Special Remarks ` `DRY'' ( ) Operation How it works? • Once the room temperature reaches the level that was set, the unit repeats the cycle of turning on and off automatically . • During DRY operation, the fan speed is automatically set to LOW or VERY LOW ; the fan speed then switches back and forth between LOW (for 20 seconds) and VE[...]

  • Page 90

    Using the 12-Hour ON and OFF Ti mer 1. TIMER ON mode (Example) After the length of time set for TIMER ON elapses, the unit begins operating. ON H The display depicted at left indicates that the air conditioner will begin operating in three hours. Setting procedure: STEP 1 Press the MODE selector button and select the desired operation mode. (See ?[...]

  • Page 91

    Using the 1-Hour OFF Ti mer 1. 1-Hour OFF Timer This function causes the unit to operate for one hour and then stop, regardless of whether the unit is on or off when the button is pressed. The 1 HR. indicator in the display indicates that this function is operating. Setting procedure: Regardless of whether the unit is operating or stopped, press th[...]

  • Page 92

    Adjusting the Airflow Direction 1. Horizontal The horizontal airflow can be adjusted by moving the vertical vanes with your hands to the left or right. CAUTION When the humidity is high, the vertical vanes should be in the front position during the cooling or dehumidifying operation. If the vertical vanes are positioned all of the way to the right [...]

  • Page 93

    Operation without the Remote Control Unit If you have lost the remote control unit or it has trouble, follow the steps below . 1. When the air conditioner is not running If you want to turn on the air conditioner , switch the operation selector to the OFF position, and then to the ON position. NOTE The set temperature and fan speed are automaticall[...]

  • Page 94

    Care and Cleaning (continued) Anti-mold filter The anti-mold filter behind the air intake grille should be checked and cleaned at least once every two weeks. How to remove the anti-mold filter 1. Grasp both ends of the air intake grille and pull it out and up. 2. Push the anti-mold filter up slightly , and then pull it down. Cleaning Use a vacuum c[...]

  • Page 95

    Care and Cleaning (continued) Air cleaning filter (not provided) The air cleaning filter removes dust and dirt from the air , and reduces odors and smoke from tobacco. NOTE KHS0951/KHS1251 The air cleaning filter is not provided with the air conditioner and must be purchased separately . The first time that you buy the air clean filter , it is nece[...]

  • Page 96

    Care and Cleaning (continued) Removing and remounting the air intake grille • With the air intake grille open all the way , grip both arms with your hands and pull toward you to remove. T o remount, hold the air intake grille roughly horizontal and push it in until the arm shafts fit into the indentations in the main unit, then fit the grille int[...]

  • Page 97

    T roubleshooting 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 . T rouble Possible Cause Remedy Air conditioner does not run at all. 1. Power failure. 1. Restore power . 2. Leakage circuit breaker tripped. 2. Con[...]

  • Page 98

    For Parts 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 000-111 SM (18-68) 00.3.17 11:49 AM y[W 69[...]