Split System Air Conditioner Technical & Service Manual

ManualsBrandsSanyo ManualsAir CompressorCH0952

REFERENCE NO. SM700447

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 Unit Outdoor Unit

Destination: U.S.A.

KHS0951

KHS1251

KHS1852

CH0951

CH0952

CH1852

000-111 SM (1-17) 00.3.17 11:44 AM y[W A

Summary of content (98 pages)

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000-111 SM (1-17) 00.3.17 11:44 AM y [ W A TECHNICAL & SERVICE MANUAL KHS0951 / CH0951 KHS1251 / CH1251 KHS1852 / CH1852 FILE NO. Destination: U.S.A. SPLIT SYSTEM AIR CONDITIONER Indoor Model No. Product Code No. Outdoor Model No. Product Code No. KHS0951 1 852 069 13 CH0951 1 852 069 16 KHS1251 1 852 069 14 CH1251 1 852 069 17 KHS1852-S 1 852 069 15 CH1852 1 852 069 18 Indoor Unit Outdoor Unit KHS0951 KHS1251 CH0951 CH0952 KHS1852 CH1852 REFERENCE NO.
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000-111 SM (1-17) 00.3.17 11:44 AM y [ W i IMPORTANT! Please Read Before Starting When Installing… 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. …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 frame to provide added support.
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000-111 SM (1-17) 00.3.17 11:44 AM y [ W ii Table of Contents Page 1. OPERATING RANGE ................................................................................................................ 1 2. SPECIFICATIONS 2-1. Unit Specifications ............................................................................................................ 2-2. Major Component Specifications...................................................................................... 2-3.
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000-111 SM (1-17) 00.3.17 11:44 AM y [ Wiii 10. CHECKING ELECTRICAL COMPONENTS 10-1. Measurement of Insulation Resistance ............................................................................ 10-2. Checking Continuity of Fuse on PCB Ass'y...................................................................... 10-3. Checking Motor Capacitor ................................................................................................ 64 65 65 11. ARRANGEMENT OF ELECTRICAL COMPONENT.................
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000-111 SM (1-17) 00.3.17 11:44 AM y [ W 1 1. OPERATING RANGE Temperature Cooling Heating Indoor Air Intake Temp. Outdoor Air Intake Temp. 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. 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.
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000-111 SM (1-17) 00.3.17 11:44 AM y [ W 2 2. SPECIFICATIONS 2-1.
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000-111 SM (1-17) 00.3.17 11:44 AM y [ W 3 (2) Indoor unit KHS1251 Outdoor unit CH1251 Cooling Voltage Rating Performance Capacity Cooling 11,700 3.43 BTU/h kW ft3/min (m3/min) Pints/h Air circulation (High) Moisture removal (High) Electrical Rating Available voltage range Running amperes Power input Power factor SEER (HSPF) Compressor locked rotor amperes Heater element Package dimensions Weight Height Width Depth Height Width Depth Net Shipping Shipping volume Heating 12,500 3.66 330 (9.35) 3.
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000-111 SM (1-17) 00.3.17 11:44 AM y [ W 4 (3) Indoor unit KHS1852 Outdoor unit CH1852 Cooling Voltage Rating Performance Capacity Cooling 17,000 / 16,500 4.98 / 4.
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000-111 SM (1-17) 00.3.17 11:44 AM y [ W 5 2-2. Major Component Specifications 2-2-1. Indoor Unit (1) Indoor unit KHS0951 Control PCB Part No. Controls Control circuit fuse POW-KHS095A, POW-KHS095B Microprocessor AC 115V – 3A Remote Control Unit RCS-1HS2U Fan & Fan Motor Type Q’ty … Dia. and length inch (mm) Fan motor model … Q’ty Nominal output W Coil resistance (ambient temp. 68°F (20°C)) Ω Run capacitor µF VAC Flap Motor Type Model Rating Coil resistance (ambient temp.
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000-111 SM (1-17) 00.3.17 11:44 AM y [ W 6 (2) Indoor unit KHS1251 Control PCB Part No. Controls Control circuit fuse POW-KHS125A / POW-KHS095B Microprocessor AC 115V – 3A Remote Control Unit RCS-1HS2U Fan & Fan Motor Type Q’ty … Dia. and length inch (mm) Fan motor model … Q’ty Nominal output W Coil resistance (ambient temp. 68°F (20°C)) Ω Run capacitor µF VAC Flap Motor Type Model Rating Coil resistance (ambient temp.
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000-111 SM (1-17) 00.3.17 11:44 AM y [ W 7 (3) Indoor unit KHS1852 Control PCB Part No. Controls Control circuit fuse POW-KHS1852 Microprocessor AC 208 / 230V – 3A Remote Control Unit RCS-1HS2U Fan & Fan Motor Type Q’ty … Dia. and length inch (mm) Fan motor model … Q’ty Nominal output W Coil resistance (ambient temp. 68°F (20°C)) Ω Run capacitor µF VAC Flap Motor Type Model Rating Coil resistance (ambient temp.
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000-111 SM (1-17) 00.3.17 11:44 AM y [ W 8 2-2-2. Outdoor Unit (1) Outdoor unit CH0951 Control PCB Part No. Controls Control circuit fuse POW-CH095 — — Compressor Type Compressor model Nominal output Compressor oil … Amount Coil resistance (ambient temp. 68°F (20°C)) Safety devices Rotary (Hermetic) C-1R75H2R 750 SUNISO 4GSD-T … 350 C – R: 0.841 C – S: 2.
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000-111 SM (1-17) 00.3.17 11:44 AM y [ W 9 (2) Outdoor unit CH1251 Control PCB Part No. Controls Control circuit fuse POW-CH095 — — Compressor Type Compressor model Nominal output Compressor oil … Amount Coil resistance (ambient temp. 68°F (20°C)) Safety devices Rotary (Hermetic) C-R95H2E 950 SUNISO 4GSD-T … 570 C – R: 0.576 C – S: 3.070 External (OLR) MRA98693-9200 40 400 115V, 20W W cc Ω Type Overload relay Run capacitor µF VAC Crank case heater Fan & Fan Motor Type Q’ty … Dia. and length inch.
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000-111 SM (1-17) 00.3.17 11:44 AM y [ W 10 (3) Outdoor unit CH1852 Control PCB Part No. Controls Control circuit fuse POW-CH095 — — Compressor Type Compressor model Nominal output Compressor oil … Amount Coil resistance (ambient temp. 68°F (20°C)) Safety devices W cc Ω Type Overload relay Run capacitor µF VAC Crank case heater Fan & Fan Motor Type Q’ty … Dia. and length inch. (mm) Fan motor model … Q’ty No. of poles … rpm (230V, High) Nominal output W Coil resistance (ambient temp.
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000-111 SM (1-17) 00.3.17 11:44 AM y [ W 11 2-3. Other Component Specifications 2-3-1. Indoor Unit (1) Indoor unit KHS0951 Transformer Rating ATR-T4 AC 115V, 60Hz 19V, 0.5A Primary Secondary Thermistor (Coil sensor) Resistance DTN-TKS131B 32°F (0°C) 15 ± 2% kΩ Thermistor (Room sensor in lamp Ass’y) Resistance kΩ DTN-TKS134B 77°F (25°C) 5 ± 3% DATA SUBJECT TO CHANGE WITHOUT NOTICE. (2) Indoor unit KHS1251 Transformer Rating ATR-T4 AC 115V, 60Hz 19V, 0.
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000-111 SM (1-17) 00.3.17 11:44 AM y [ W 12 2-3-2. Outdoor Unit (1) Outdoor Unit CH0951 PTC Thermistor PS2A E20-470 Ω Resistance at 77°F (25°C) 47 ± 25% Power Relay (PR) DFU24D1-F Coil rating DC 24V Ω Coil resistance at 68°F (20°C) 650 ± 10% Contact rating AC 250V, 20A Thermostat (Defrost thermo. 23D) Operating temp. TRS02-12MSR °F (°C) Thermostat (Low temp. cutoff 23A) Operating temp. ON 54 ± 4°F (12 ± 2°C) Diff. 14 deg (8 deg).
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000-111 SM (1-17) 00.3.17 11:44 AM y [ W 13 (3) Outdoor Unit CH1852 Power Relay (PR) DFU24D1-F Coil rating Coil resistance DC 24V Ω at 68°F (20°C) 650 ± 10% Contact rating AC 250V, 20A Thermostat (Defrost thermo. 23D) Operating temp. TRS02-12MSR °F (°C) Thermostat (Low temp. cutoff 23A) Operating temp. ON 54 ± 4°F (12 ± 2°C) Diff. 14 deg (8 deg). below TRS02-M13MSR436 °F (°C) OFF (OPEN) : 5°F (–15°C) ON (CLOSE) : 17°F (–8.
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000-111 SM (1-17) 00.3.17 11:44 AM y [ W 14 3. DIMENSIONAL DATA 3-1. Unit 3-1-1. Indoor Unit (1) Indoor unit KHS0951 / KHS1251 31-11/16 (805) 10-5/8 (270) 6-31/32 (177) Drain hose ø23/32 (18) 6-7/32 (172.5) 1-5/8 (41.0) 1-5/8 (41.0) Remote control unit 2-2/5 (61) 3-29/32 2-5/16 (99.5) (58.5) Narrow tube ø1/4 (6.35) Center of tubing hole (2 places) Wide tube* 25/32 (18.5) * KHS0951 ø3/8 (9.52) KHS1251 ø1/2 (12.
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000-111 SM (1-17) 00.3.17 11:44 AM y [ W 15 (2) Indoor unit KHS1852 11-7/32 (285) 39-3/16 (995) 7-23/32 (196) 1/8 (3) 6-7/32 (172.5) 1-25/32 (45) 1-25/32 (45) Remote control unit 2-2/5 (147.5) 5-13/16 (147.5) 5-13/16 Drain hose ø18 Center of tubing hole (2 places) (61) 25/32 (18.5) Narrow tube ø6.35 (1/4") Wide tube ø15.
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000-111 SM (1-17) 00.3.17 11:44 AM y [ W 16 3-1-2. Outdoor Unit (1) Outdoor unit CH0951 / CH1251 Air intake 3-25/32" 11-13/32" 23-15/16" 12-7/16" 2-ø15/32" 15/32" Air discharge 31-2/1" 5/8" 21-1/4" 11-13/32" Narrow tube service valve ø6.35 (1/4") Wide tube service valve* * 2-5/32" CH0951 ø3/8 (9.52) CH1251 ø1/2 (12.
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000-111 SM (1-17) 00.3.17 11:44 AM y [ W 17 (2) Outdoor unit CH1852 Air intake 5-11/32" 12-7/32" 23-15/16" 13-5/32" 4-ø15/32" 15/32" Air discharge 34-21/32" 5/8" 21-19/32" 12-19/32" Narrow tube service valve ø6.35 (1/4") Wide tube service valve 2-5/32" ø15.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 18 4. REFRIGERANT FLOW DIAGRAM 4-1. Refrigerant Flow Diagram KHS0951 / KHS1251 CH0951 / CH1251 Outdoor unit Accumulator Heat exchanger Narrow tube Capillary tube Narrow tube service valve Capillary tube Cooling cycle Strainer O.D. 1/4" (øø6.35 mm) Check valve Heating cycle KHS1852 CH1852 Indoor unit Outdoor unit Accumulator Wide tube Wide tube service valve 4-way valve Muffler Heat exchanger O.D. 5/8" (ø15.88 mm) Receiver tank Narrow tube O.D.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 19 5. PERFORMANCE DATA 5-1. Performance Charts Indoor Unit Outdoor Unit KHS0951 CH0951 ■ Heating Characteristics ■ Cooling Characteristics 115 V Indoor inlet air D.B. temp. ¡F (¡C) 13 12 11 95 (35.0) 80 (26.7) 67 (19.4) 10 Indoor inlet air D.B. temp. ¡F (¡C) 13 Operating current (A) Operating current (A) 115 V 9 8 12 11 80 (26.7) 70 (21.1) 59 (15.0) 10 9 8 7 7 6 60 70 80 6 10 90 100 110 120 Outdoor inlet air D.B. temp. ¡F (¡C) Indoor inlet air D.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 20 Indoor Unit Outdoor Unit KHS1251 CH1251 ■ Heating Characteristics ■ Cooling Characteristics 115 V Indoor inlet air D.B. temp. ¡F (¡C) 14 13 95 (35.0) 80 (26.7) 12 Indoor inlet air D.B. temp. ¡F (¡C) 14 Operating current (A) Operating current (A) 115 V 67 (19.4) 11 10 9 13 80 (26.7) 70 (21.1) 59 (15.0) 12 11 10 9 8 8 7 60 70 80 7 10 90 100 110 120 Outdoor inlet air D.B. temp. ¡F (¡C) 40 50 60 70 80 115 V Indoor inlet air D.B. temp.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 21 Indoor Unit Outdoor Unit KHS1852 CH1852 ■ Heating Characteristics ■ Cooling Characteristics 230 V Indoor inlet air D.B. temp. ¡F (¡C) 12 11 10 95 (35.0) 80 (26.7) 67 (19.4) 9 Indoor inlet air D.B. temp. ¡F (¡C) 12 Operating current (A) Operating current (A) 230 V 8 7 11 10 80 (26.7) 9 70 (21.1) 8 59 (15.0) 7 6 6 5 60 70 80 5 10 90 100 110 120 Outdoor inlet air D.B. temp. ¡F (¡C) 130 (9.1) 300 (21.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 22 5-2. Air Throw Distance Chart (1) Indoor Unit KHS0951 Cooling Room air temp. : Fan speed : 80¡F (26.7¡C) High Horizontal distance (ft.) 0 5 10 15 20 25 30 Axis air velocity (ft./sec.) Vertical distance (ft.) 0 5 10 15 : Flap angle 0° , : Flap angle 30°, : Axis air velocity 0° : Axis air velocity 30° Heating Room air temp. : Fan speed : 70¡F (21.1¡C) High Horizontal distance (ft.) 0 5 10 15 20 25 Axis air velocity (ft./sec.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 23 (2) Indoor Unit KHS1251 Cooling Room air temp. : Fan speed : 80¡F (26.7¡C) High Horizontal distance (ft.) 0 5 10 15 20 25 30 Axis air velocity (ft./sec.) Vertical distance (ft.) 0 5 10 15 : Flap angle 0° , : Flap angle 30°, : Axis air velocity 0° : Axis air velocity 30° Heating Room air temp. : Fan speed : 0 70¡F (21.1¡C) High 5 Horizontal distance (ft.) 10 15 20 25 Axis air velocity (ft./sec.) Vertical distance (ft.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 24 (3) Indoor Unit KH1852 Cooling Room air temp. : Fan speed : 80¡F (26.7¡C) High Horizontal distance (ft.) 0 5 10 15 20 25 30 Axis air velocity (ft./sec.) Vertical distance (ft.) 0 5 10 15 : Flap angle 0° , : Flap angle 30°, : Axis air velocity 0° : Axis air velocity 30° Heating Room air temp. : Fan speed : 70¡F (21.1¡C) High Horizontal distance (ft.) 0 5 10 15 20 25 Axis air velocity (ft./sec.) Vertical distance (ft.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 25 5-3. Cooling Capacity Indoor Unit Outdoor Unit KHS0951 CH0951 115V Single phase 60 Hz RATING CAPACITY : EVAPORATOR ENT.TEMP.°F (°C) WB DB 59 (15.0) 63 (17.2) 67 (19.4) 71 (21.7) 75 (23.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(28.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(28.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(28.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(28.9) 76(24.4) 80(26.7) 84(28.9) 88(28.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 26 Indoor Unit Outdoor Unit KHS1251 CH1251 115 V Single phase 60 Hz y RATING CAPACITY : EVAPORATOR ENT.TEMP.°F (°C) WB DB 59 (15.0) 63 (17.2) 67 (19.4) 71 (21.7) 75 (23.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(28.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(28.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(28.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(28.9) 76(24.4) 80(26.7) 84(28.9) 88(28.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 27 Indoor Unit Outdoor Unit KHS1852 CH1852 208 V Single phase 60 Hz RATING CAPACITY : EVAPORATOR ENT.TEMP.°F (°C) WB DB 59 (15.0) 63 (17.2) 67 (19.4) 71 (21.7) 75 (23.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(28.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(28.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(28.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(28.9) 76(24.4) 80(26.7) 84(28.9) 88(28.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 28 Indoor Unit Outdoor Unit KHS1852 CH1852 230 V Single phase 60 Hz RATING CAPACITY : EVAPORATOR ENT.TEMP.°F (°C) WB DB 59 (15.0) 63 (17.2) 67 (19.4) 71 (21.7) 75 (23.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(28.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(28.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(28.9) 72(22.2) 76(24.4) 80(26.7) 84(28.9) 88(28.9) 76(24.4) 80(26.7) 84(28.9) 88(28.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 29 5-4. Heating Capacity Heating capacity ratio (%) Indoor unit Outdoor unit KHS0951 / KHS1251 / KHS1852 CH0951 / CH1251 / CH1852 120 110 100 90 80 70 60 50 40 30 20 10 0 17 20 30 47 40 50 60 Outdoor temperature (¡F DB) NOTE 1) ● … Point of rating condition Black dot in the chart indicates the following rating condition. Indoor: 70°F (21.1°C) D.B. Outdoor: 47°F (8.3°C) D.B. / 43°F (6.1°C) W.B.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 30 6. ELECTRICAL DATA 6-1. Electrical Characteristics Indoor Unit Outdoor Unit KHS0951 CH0951 COOLING Indoor Unit Fan Motor Performance at Rating Conditions Outdoor Unit Fan Motor Complete Unit Compressor 115V Single phase 60Hz Running Amps. Power Input Full Load Conditions Running Amps. Power Input A kW A kW 0.40 0.70 7.4 8.5 0.034 0.081 0.775 0.89 0.40 0.70 9.1 10.2 0.034 0.081 0.985 1.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 31 Indoor Unit Outdoor Unit KHS1251 CH1251 COOLING Indoor Unit Fan Motor Performance at Rating Conditions Outdoor Unit Fan Motor Complete Unit Compressor 115V Single phase 60Hz Running Amps. Power Input Full Load Conditions Running Amps. Power Input A kW A kW 0.40 0.70 9.4 10.5 0.034 0.081 1.085 1.20 0.40 0.70 11.8 12.9 0.034 0.081 1.365 1.48 Rating Conditions : Indoor Air Temperature 80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 32 Indoor Unit Outdoor Unit KHS1852 CH1852 COOLING Indoor Unit Fan Motor Performance at Rating Conditions Outdoor Unit Fan Motor Complete Unit Compressor 230 / 208V Single phase 60Hz Running Amps. Power Input Full Load Conditions Running Amps. Power Input A 0.25 / 0.23 kW 0.047 / 0.045 A 0.25 / 0.23 kW 0.047 / 0.045 0.49 / 0.46 6.86 0.113 / 0.095 1.54 0.49 / 0.46 8.8 0.113 / 0.095 1.98 / 7.41 7.6 / 1.52 / 8.1 1.70 / 1.66 9.7 9.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 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.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 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.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 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.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 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.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 42 7. INSTALLATION INSTRUCTIONS 7-1. Installation Site Selection 7-1-1. Indoor Unit WARNING Indoor unit 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 flow. Drain hose AVOID: Outside drainage ● direct sunlight. ● nearby heat sources that may affect performance of the unit.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 43 7-1-2. Outdoor Unit NO AVOID: ● heat sources, exhaust fans, etc. (Fig. 4) ● damp, humid or uneven locations. Exhaust fan Hot air Heat source DO: Outdoor unit ● 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) Fig. 4 Obstacle above CAUTION ● Do not place objects on or sit on the outdoor unit.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 44 7-2. Remote Control Unit Installation Position 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 ● More than 26 ft.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 45 7-3. Address Switches 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. The switches of the remote control unit are shown in Fig. 8.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 46 WIRING SYSTEM DIAGRAM 7-4. Recommended Wire Length and Diameter Disconnect (Inter-unit) OUTDOOR UNIT INDOOR UNIT switch Power lines (Field supply) Terminal Terminal 1 2 3 4 5 6 NOTE Refer to the wiring system diagram (Fig. 11) Refer to your local codes or in the absence of local codes with the National Electric Code: ANSI/NFPA70.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 47 8. FUNCTION 8-1. Room Temperature Control ■ Cooling ● Room temperature control is obtained by cycling the compressor ON and OFF under control of the room temperature 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. Signal from remote control unit 3 minutes 3 minutes 3 minutes Thermo. OFF set temp. 3 minutes Thermo. ON Thermo.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 48 ■ Heating ● Room temperature control is obtained by cycling the compressor ON and OFF under control of the room temperature 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. Signal from remote control unit More than 5 minutes 3 minutes 3 minutes 3 minutes 3 minutes 3 minutes 3 minutes Thermo. ON set temp. Thermo. OFF Thermo.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 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 temperature. Room temp. Cooling operation T + 4 ¡F Set temp.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 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 the temperature rises above 46°F or 6 minutes has elapsed. Thermo. OFF Thermo. ON Room temp. T + 4 ¡F Set temp.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 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 switched to set speed regardless of indoor heat exchange coil temperature. Max. 10minutes 95 Indoor heat exch. coil temp.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 52 8-7. Defrosting Operation (Heating) ■ Defrosting Flowchart Compressor ON Release of overload prevention (Outdoor fan operates.) Overload prevention works. Does outdoor fan stop? YES NO A B Outdoor fan is either operated or stopped for more than 10 minutes. NO Is outdoor fan continuously operating for more than 10 minutes? C D Indoor heat exchanger coil temperature drops 1.4¡F per 6 minutes and it repeats 3 times in succession.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 53 ■ Defrosting Mode Timing Chart Release of defrosting Start of defrosting 32 seconds Compressor ON Outdoor fan ON OFF Max. 11 minutes ON ON 32 seconds OFF ON 2 seconds Solenoid coil (4 – way valve) Indoor fan Standby lamp ON OFF 2 seconds OFF ON ON Set speed OFF LL ON ON Indoor heat exch. coil 95¡F temp. 77¡F Set speed OFF * 1 Release of cold draft prevention NOTE *1: Refer to "8-6 Cold Draft Prevention". 8-8.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 54 9. TROUBLESHOOTING 9-1. Check before and after troubleshooting WARNING Hazardous voltage can cause ELECTRIC SHOCK or DEATH. Disconnect power or turn off circuit breaker before you start checking or servicing. 9-1-1. Check power 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.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 55 9-2. Air conditioner does not operate. 9-2-1. Circuit breaker trips (or fuse blows). 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 2M½ or less, insulation is defective (“NO”).
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 56 B. Circuit breaker trips in several minutes after turning the air conditioner on. ● There is a possibility of short circuit. • Check capacity of circuit breaker. Replace with suitable one (larger capacity). NO Capacity of circuit breaker is suitable. In case of Heating operation : • Measure resistance of 4-way valve's winding. • Measure resistance of outdoor fan motor winding. • Measure resistance of compressor motor winding. 9-2-2.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 57 C. Check remote control unit. • Try to run with another remote control unit. OK First remote control unit is defective. • Check for residue buildup on transmitter of remote control unit. Clean transmitter. • Check for residue buildup on remote control receiver on front of indoor unit. Clean receiver. D. Check fuse on the indoor PCB Ass'y. • Check fuse on indoor PCB Ass'y for continuity.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 58 9-2-3. Only outdoor unit does not run. A. Check setting temperature. COOL HEAT Is room temperature too low ? Is room temperature too high ? NO NO Try to lower setting temperature by temperature setting button ( button). Try to raise setting temperature by temperature setting button ( button). Outdoor unit still does not run. Outdoor unit still does not run. • Try to run using another remote control unit. • Try to run using another remote control unit.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 59 9-3. Some part of air conditioner does not operate. 9-3-1. Only indoor fan does not run. • Check fan rotation. Turn fan gently once or twice by hand. • Check fan casing foreign matter on inside. Fan cannot be turned. Fan motor burnout or foreign matter in bearings. • Measure resistance of indoor fan motor winding. OK • Check fan motor capacitor. 9-3-2. Only flap motor does not run. • Measure resistance of flap motor winding.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 60 9-3-4. Only outdoor fan does not run. • Check fan casing foreign matter on inside. Fan cannot be turned. • Check fan rotation. Turn fan gently once or twice by hand. Fan motor burnout or foreign matter in bearings. Remove foreign matter or repair. Repair or replace. • Measure resistance of indoor fan motor winding. OK • Check fan motor capacitor. 9-3-5. Only compressor does not run. • Check compressor motor capacitor.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 61 9-4. Air conditioner operates, but abnormalities are observed. 9-4-1. Operation does not switch from HEAT to COOL (or COOL to HEAT). • Remote control unit may be defective. Receiver in lamp Ass'y may be defective. • Measure resistance of 4–way valve's winding. COOL ➞ HEAT • Check voltage between terminals No. 3(+) and No. 5 at terminal plate. (DC 24V) OK Outdoor PCB Ass'y is defective. No voltage appears. • Indoor PCB Ass'y is defective.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 62 9-4-2. Poor cooling or heating. • Check position of remote control unit. • Cool or warm air from air conditioner reaches position directly. YES Change position of remote control unit. • Wide and narrow tubes between indoor unit and outdoor unit are insulated. NO Insulate both wide and narrow tubes separately and then tape together. YES • Measure temperature of suction and discharge air of air conditioner. Temperature difference is small.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 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 both compressor and outdoor fan motor periodically ON and OFF for several minutes. (Refer to "8-3. Freeze Prevention") B.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 64 10. CHECKING ELECTRICAL COMPONENTS 10-1. Measurement of Insulation Resistance Ground wire Clip ● The insulation is in good condition if the resistance exceeds 2M½. Probe 10-1-1. Power Supply Wires Insulation tester 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 power wires. (Fig. 1) Fig.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 65 10-2. Checking Continuity of Fuse on PCB Ass'y Fuse ● Remove the PCB Ass’y from the electrical component box. Then pull out the fuse from the PCB Ass’y. (Fig. 5) PCB Ass’y ● Check for continuity using a multimeter as shown in Fig. 6. Fig. 5 10-3. Checking Motor Capacitor Remove the lead wires from the capacitor terminals, and then place a probe on the capacitor terminals as shown in Fig. 7.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 66 11. ARRANGEMENT OF ELECTRICAL COMPONENT Indoor Unit KHS0951 / KHS1251 Controller B (PCB Ass'y B) Controller A (PCB Ass'y A) SEC. PRY. Transformer Terminal base 1 2 3 4 5 6 G Coil temp. thermistor Lamp Ass'y Room temp. thermistor KHS1852 Fan motor capacitor 1 2 3 4 Transformer Controller (PCB Ass'y) PRY. Coil temp. thermistor SEC. Indoor Unit Flap motor 5 6 Terminal base G Room temp.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 67 Outdoor Unit CH0951 / CH1251 / CH1852 ● Electric Parts Power relay Terminal base PTC Thermistor (Only for 115V models) 5 G TH UNIT 3 PR 4 NC COM NO 6 (L1) (L2) 7 8 Fan motor capacitor 1 2 CONTROLLER 20S FM1 SUPPLY FM Controller (PCB Ass'y) Compressor motor capacitor ● Parts Layout in Unit Electric compornet box Thermostat (Low temp.
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000-111 SM (18-68) 00.3.
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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, easy logically displayed for easy use.
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Contents Page Features .................................................................................................................. 2 Product Information .............................................................................................. 3 Alert Symbols ........................................................................................................ 3 Installation Location ..............................................................................................
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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 not install this air conditioner where there are fumes or flammable gases, or in an extremely humid space such as a greenhouse.
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Names of Parts INDOOR UNIT Air intakes Air outlet Remote control unit Drain hose Refrigerant tubes OUTDOOR UNIT Air outlet 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. You can control the air conditioner with the remote control unit.
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Unit Display and Operation Selector INDOOR UNIT KHS1852 Operation selector INDOOR UNIT KHS0951 KHS1251 ON OFF TEST ON OFF TEST Operation selector OPERATION lamp TIMER lamp OPERATION STANDBY Remote control receiver TIMER Remote control receiver STANDBY lamp OPERATION TIMER STANDBY IMPORTANT Avoid using radio equipment such as mobile phones near (within 1 m of) the indoor unit. Some radio equipment may cause the unit to malfunction.
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Remote Control Unit (Display) Displayed when setting temperature Displayed when transmitting data SET TEMP. 1HR. ON H OFF Displayed when setting timer Symbols (1) Operation mode AUTO....................................... (3) Temperature setting 60 – 88 °F When set to 82 °F ........... Current temperature indication ......................... HEAT........................................ (4) Timer MILD DRY................................ COOL .......................................
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Remote Control Unit Transmitter SET TEMP. 1HR. ON H OFF Display (Cover closed) ON/OFF operation button ON OFF 1HR. TIMER TEMP. 1 HR. TIMER button TEMP. setting buttons FAN SPEED selector button FLAP button FLAP FAN SPEED MODE TIMER ON button ON TIMER OFF button SET button MODE selector button OFF SET NIGHT CANCEL SETBACK BATTERIES CANCEL button NIGHT SETBACK button ACL ACL button A B ADDRESS switch Battery compartment (Pull off the cover to expose the batteries.
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Remote Control Unit (continued) MODE selector button Green or red (AUTO) Red (HEAT) Orange (DRY) Green (COOL) FLAP button NOTE 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” or “HEAT” mode as appropriate. : The air conditioner makes the room warmer. : The air conditioner reduces the humidity in the room.
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Using the Remote Control Unit How to Install Batteries 1. Slide the cover in the direction indicated by the arrow and remove it. 2. Install two AAA alkaline batteries. Make sure the batteries point in the direction marked in the battery compartment. ACL button 3. Use a thin object such as the tip of a pen to press the ACL button. Cover NOTE • • • • How to Use the Remote Control Unit The batteries last about six months, depending on how much you use the remote control unit.
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Using the Remote Control Unit (continued) Mounting the Remote Control Unit Removable mounting Non-removable mounting Wall Wall (Packed with the indoor unit) (Packed with the indoor 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.
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Operation with the Remote Control Unit 1. Automatic Operation SET TEMP. 1HR. TIMER ON OFF TEMP. STEP 2 FLAP FAN SPEED MODE ON SET NOTE STEP 1 OFF NIGHT CANCEL SETBACK 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.
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Operation with the Remote Control Unit (continued) Press TEMP. to change the temperature setting. To raise the temperature setting TEMP. To lower the temperature 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.
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Operation with the Remote Control Unit (continued) 2. Manual Operation SET TEMP. 1HR. TIMER ON OFF TEMP. STEP 2 STEP 3 STEP 4 STEP 5 FLAP FAN SPEED MODE STEP 1 ON SET NOTE OFF NIGHT CANCEL SETBACK 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 settings as desired.
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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 automatically after five minutes. 3. Adjusting the Fan Speed A. Automatic Simply set the FAN SPEED selector button to the position.
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Operation with the Remote Control Unit (continued) 4. Night Setback Mode SET TEMP. 1HR. TIMER ON OFF TEMP. FLAP FAN SPEED MODE ON OFF SET NIGHT CANCEL SETBACK BATTERIES ACL The Night Setback Mode is used for saving energy. Press the NIGHT SETBACK button while the air conditioner is operating. mark appears in the display. The To cancel the night setback function, press the NIGHT SETBACK button again.
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Operation with the Remote Control Unit (continued) 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, regardless of the indoor temperature when night setback was selected. This enables you to save energy without sacrificing comfort. This function is convenient when gentle cooling is needed.
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Special Remarks ``DRY'' ( ) Operation How it works? • • • Heating ( 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 VERY LOW (for 10 seconds). “DRY” operation is not possible if the indoor temperature is 59°F or less.
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Using the 12-Hour ON and OFF Timer After the length of time set for TIMER ON elapses, the unit begins operating. 1. TIMER ON mode (Example) The display depicted at left indicates that the air conditioner will begin operating in three hours. ON Setting procedure: H 1HR. TIMER ON OFF STEP 1 Press the MODE selector button and select the desired operation mode. (See “Operation with the Remote Control Unit,” page 14.) STEP 2 Press the TIMER ON button.
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Using the 1-Hour OFF Timer 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 1HR. indicator in the display indicates that this function is operating. 1HR. ON OFF 1HR. TIMER TEMP. Setting procedure: Regardless of whether the unit is operating or stopped, press the 1 HR. TIMER button. 1HR. appears in the display.
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Adjusting the Airflow Direction 1. Horizontal CAUTION 2. Vertical The horizontal airflow can be adjusted by moving the vertical vanes with your hands to the left or right. 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 or left, condensation may begin to form around the air vent and drip down.
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Operation without the Remote Control Unit INDOOR UNIT KHS0951 KHS1251 If you have lost the remote control unit or it has trouble, follow the steps below. ON OFF TEST KHS1852 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. Operation selector NOTE The set temperature and fan speed are automatically set at the last selection before stopping. 2.
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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. Air intake grille 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. Anti-mold filter Cleaning How to replace the anti-mold filter Use a vacuum cleaner to remove light dust.
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Care and Cleaning (continued) Air cleaning filter (not provided) NOTE The air cleaning filter removes dust and dirt from the air, and reduces odors and smoke from tobacco. 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 necessary to get the STK-ARF4B model with frame. When changing the filter subsequently, it is only necessary to replace the filter itself (model STK-F4B).
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Care and Cleaning (continued) Removing and remounting the air intake grille CAUTION Washing the grille with water • With the air intake grille open all the way, grip both arms with your hands and pull toward you to remove. To 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 into place. Air intake grille Arm When using a footstool or the like, be careful not to let it tip over.
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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 Air conditioner does not run at all. OPERATION lamp flashes and air conditioner does not operate. Compressor runs but soon stops. Poor cooling (or heating) performance. Clicking sound is heard from the air conditioner. OPERATION lamp lights but outdoor unit will not run. Possible Cause 1.
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000-111 SM (18-68) 00.3.17 11:49 AM y [ W 69 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.