Sanyo CH2432 manual

85464849176000 REFERENCE NO. SM 830076 1 2 3 4 Section SPLIT SYSTEM AIR CONDITIONER SER VICE MANU AL FILE NO. XHS2432 / CH2432 XHS3632 / CH3632 INDOOR MODEL No. PRODUCT CODE No. OUTDOOR MODEL No. PRODUCT CODE No. XHS2432 854 013 40 CH2432 854 013 42 XHS3632 854 015 45 CH3632 854 014 57 Indoor Unit Outdoor Unit XHS3632 CH3632 XHS2432 CH2432[...]

Please Read Before Starting 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 instruction booklet[...]

– 3 – SM830076 WHO SHOULD USE THIS MANUAL This service manual is made to assist the service technician apply his knowledge and training to this model air conditioner. This manual is written both for experienced service persons and those who are new to air conditioning service. To help those with less experience or who are new to this kind of un[...]

– 4 – SM830076 2-9 Auto. Mode for Automatic Heating/Cooling Switching ........................................ 35 2-10 Defrosting Control, Outdoor Heat Exchanger Coil (Heating) .............................. 37 2-11 4-Way Valve, Solenoid Control ........................................................................... 38 (A) Normal Control Mo[...]

– 5 – SM830076 WHA T IS IN THIS MANU AL Introduction: Read Me First! This manual will help you understand and service the air conditioner. To help you find the information you need, we have divided it into 5 main sections. Each section is divided into chapters with charts, tables and explana- tions to help you find and repair problems. ❑ Sect[...]

– 6 – SM830076 1 1. SPECIFICA TIONS 1-1 Unit Specifications ........................................................................................... 7 1-2 Major Component Specifications .................................................................. 11 (A) Indoor Unit .......................................................................[...]

1 2 3 4 – 7 – SM830076 1. Specifications 1-1 Unit Specifications MODEL No. Indoor Unit XHS2432 Outdoor Unit CH2432 PO WER SOURCE 230 - 208 V / 1 Phase / 60 Hz PERFORMANCE Cooling Heating Capacity* BTU / h 24,000 23,400 25,000 24,300 (17 ° F)** 16,400 15,800 Moisture remov al (High) Pints / h 8.6 8.4 — Air circulation (Hi) cu.ft. / min. 540 /[...]

1. Specifications 1 2 3 4 – 8 – SM830076 1-1 Unit Specifications DIMENSIONS & WEIGHT Indoor unit Outdoor unit Unit dimensions Height in. (mm) 9-27/32 (250) 28-30/32 (735) Width in. (mm) 29-29/32 (760) 37 (940) Depth in. (mm) 29-29/32 (760) 13-12/32 (340) Net weight lbs. (kg) 49 (22) 157 (71) Indoor grille dimensions Height in. (mm) 3-1/16 ([...]

1 2 3 4 – 9 – SM830076 1. Specifications 1-1 Unit Specifications MODEL No. Indoor Unit XHS3632 Outdoor Unit CH3632 PO WER SOURCE 230 - 208 V AC / 1 Phase / 60 Hz PERFORMANCE Cooling Heating Capacity* BTU / h 34,500 33,500 37,500 36,500 (17 ° F)** 25,000 23,500 Moisture remov al (High) Pints / h 11.1 11.1 — Air circulation (Hi) cu.ft. / min. [...]

1. Specifications 1 2 3 4 – 10 – SM830076 1-1 Unit Specifications DIMENSIONS & WEIGHT Indoor unit Outdoor unit Unit dimensions Height in. (mm) 11-1/32 (280) 48-20/32 (1,235) Width in. (mm) 41-11/32 (1,050) 37 (940) Depth in. (mm) 29-29/32 (760) 13-12/32 (340) Net weight lbs. (kg) 60 (27) 203 (92) Indoor grille dimensions Height in. (mm) 3-1[...]

1 2 3 4 – 11 – SM830076 1. Specifications 1-2 Major Component Specifications (A) Indoor Unit MODEL No . XHS2432 Source 230 - 208 VAC / 1 phase / 60 Hz Remote controller (Accessory) RCS - 5HPS4U Controller P. C. B Ass'y CR - THS2432 Control circuit fuse 250 VAC, 3 A Controller Ass'y CR - 3XHS Fan (Number … diameter) in. (mm) Turbo (1[...]

1. Specifications 1 2 3 4 – 12 – SM830076 1-2 Major Component Specifications (A) Indoor Unit MODEL No . XHS3632 Source 230 - 208 VAC / 1 phase / 60 Hz Remote controller (Accessory) RCS - 5HPS4U Controller P. C. B Ass'y CR - THS2432 Control circuit fuse 250 VAC, 3 A Controller Ass'y CR - 3XHS Fan (Number … diameter) in. (mm) Turbo (1[...]

1 2 3 4 – 13 – SM830076 1. Specifications 1-2 Major Component Specifications (B) Outdoor Unit MODEL No. CH2432 Source 230 - 208 VAC / 1 phase / 60 Hz Controller P.C.B. Ass'y CR - CH2432 (Microprocessor) Control circuit fuse 250 VAC, 3 A Compressor Rotary (Hermetic) Model C - 2R160H6T Source 230 - 208 VAC / 1 phase / 60 Hz Nominal output W [...]

1. Specifications 1 2 3 4 – 14 – SM830076 1-2 Major Component Specifications (B) Outdoor Unit MODEL No. CH3632 Source 230 - 208 VAC / 1 phase / 60 Hz Controller P.C.B. Ass'y CR - CH2432 (Microprocessor) Control circuit fuse 250 V, 3 A Compressor Rotary (Hermetic) Model C - R221H6R Source 230 - 208 VAC / 1 phase / 60 Hz Nominal output W 2,2[...]

1 2 3 4 – 15 – SM830076 1. Specifications 1-3 Other Component Specifications (A) Indoor Unit MODEL No . XHS2432 Power Transformer ATR – II174B Rated Primary 220 VAC, 60 Hz Secondary 14.8 VAC 0.55 mA, 14.8 VAC 0.6 mA Capacity — Coil resistance Ω WHT - WHT : 101 , BRN - BRN : 0.42 (Ambient temprature 77 ° F) Thermistor cut off temperature [...]

1. Specifications 1 2 3 4 – 16 – SM830076 1-3 Other Component Specifications (A) Indoor Unit MODEL No . XHS3632 Power Transformer ATR – II174B Rated Primary 220 VAC, 60 Hz Secondary 14.8 VAC 0.55 mA, 14.8 VAC 0.6 mA Capacity — Coil resistance Ω WHT - WHT : 101 , BRN - BRN : 0.42 (Ambient temprature 77 ° F) Thermistor cut off temperature [...]

1 2 3 4 – 17 – SM830076 1. Specifications 1-3 Other Component Specifications (B) Outdoor Unit MODEL No. CH2432 Compressor Motor Magnetic Contactor FMCA - 1UL Coil rated 240 VAC, 60 Hz Coil resistance (at 77 ° F) Ω 580 ± 15 % Contact rated (Main) 230 VAC, 20 A Contact rated (Auxiliary) 230 VAC, 3 A Power Relay HH62S Coil rated 240 VAC, 60 Hz[...]

1. Specifications 1 2 3 4 – 18 – SM830076 1-3 Other Component Specifications (B) Outdoor Unit MODEL No. CH3632 Compressor Motor Magnetic Contactor FMCA - 1SUL Coil rated 240 VAC, 60 Hz Coil resistance (at 68 ° F) Ω 588 ± 10 % Contact rated (Main) 240 VAC, 26 A Contact rated (Auxiliary) 240 VAC, 3 A Power Relay HH62S Coil rated 240 VAC, 60 H[...]

1 2 3 4 – 19 – SM830076 1. Specifications 1-4 Dimensional Data (A) Indoor Unit: XHS2432 33-27/32 3-15/16 29-29/32 19-11/16 19-11/16 11-23/32 1-3/16 8-1/16 6-1/2 1/2 1/2 1-7/8 33-27/32 32-9/32 (Ceiling opening) 32-9/32 (Ceiling opening) 28-3/4 (Suspention bolt pitch) Grille center 23-7/32 (Suspention bolt pitch) 13-2/4 1-3/8 Air intake Air outle[...]

1. Specifications 1 2 3 4 – 20 – SM830076 1-4 Dimensional Data (A) Indoor Unit: XHS3632 45-9/32 41-11/32 31-3/32 19-11/16 12-29/32 1-3/16 8-19/32 4-29/32 33-27/32 43-11/16 (Ceiling opening) 32-9/32 (Ceiling opening) 2-13/32 40-5/32 (Suspention bolt pitch) Panel center 23-7/32 (Suspention bolt pitch) 19-9/32 1-9/16 Air intake grille Air outlet R[...]

1 2 3 4 – 21 – SM830076 1. Specifications 1-4 Dimensional Data (B) Outdoor Unit: CH2432 15-3/4 14-31/32 13/32 1-3/16 1-31/32 28-15/16 11 12-1/16 37 Dimension : inch Hole for anchor bolt (4-ø1/2) Refrigerant tube joint (narrow tube) Flare connection 1/4 in (6.35 mm) Refrigerant tube joint (wide tube) Flare connection 3/4 in (19.05 mm) Refrigera[...]

1. Specifications 1 2 3 4 – 22 – SM830076 1-4 Dimensional Data (B) Outdoor Unit: CH3632 48-5/8 22-27/32 23-29/32 37 Dimension : inch Hole for anchor bolt (4-ø13) Refrigerant tube joint (narrow tube) Flare connection 3/8 in (9.52 mm) Refrigerant tube joint (wide tube) Flare connection 3/4 in (19.05 mm) Refrigerant tubing inlet Power supply inle[...]

1 2 3 4 – 23 – SM830076 1. Specifications 1-5 Refrigerant Flow Diagram Outdoor Unit: CH2432 Indoor Unit: XHS2432 1-6 Operating Range T emperature Indoor Air Intake Outdoor Air Intake Cooling Maximum 95 ° F DB, 71 ° F WB 115 ° F DB Minimum 67 ° F DB, 57 ° F WB 23 ° F DB Heating Maximum 80 ° F DB, 67 ° F WB 75 ° F DB, 65 ° F WB Minimum [...]

1. Specifications 1 2 3 4 – 24 – SM830076 1-5 Refrigerant Flow Diagram Outdoor Unit: CH3632 Indoor Unit: XHS3632 1-6 Operating Range T emperature Indoor Air Intake Outdoor Air Intake Cooling Maximum 95 ° F DB, 71 ° F WB 115 ° F DB Minimum 67 ° F DB, 57 ° F WB 23 ° F DB Heating Maximum 80 ° F DB, 67 ° F WB 75 ° F DB, 65 ° F WB Minimum [...]

1. Specifications 1 2 3 4 Section – 25 – SM830076 2. Processes and functions 2. PR OCESSES AND FUNCTIONS 2-1 Room Temperature Control .......................................................................... 26 (A) Cooling ..................................................................................................... 26 (B) Heating .....[...]

1 2 3 4 Section – 26 – SM830076 2. Processes and functions Fig. 1 Chart Summary and Explanations ❑ Once the compressor starts , it keeps running for 5 minutes. ❑ Once the compressor stops , it will not start running again for 3 minutes. ❑ If you change the operation mode ( HEAT, COOL, or FAN ) during the cooling cycle, the control circuit[...]

1. Specifications 1 2 3 4 Section – 27 – SM830076 2. Processes and functions (B) Heating Chart Summary and Explanations ❑ Once the compressor starts, it keeps running for 5 minutes. ❑ Once the compressor stops, it will not start running again for 3 minutes. ❑ If you change the operation mode ( HEAT, COOL or FAN ) during the heating cycle,[...]

1 2 3 4 Section – 28 – SM830076 2. Processes and functions 2-2 Cold Draft Prevention (Heating Cycle) The cold draft prevention function controls indoor fan speed so a strong draft of cold air will not blow out before the indoor heat exchange coils have warmed up. ❑ STANDBY shows on the remote controller when the indoor fan speed is LL (very l[...]

1. Specifications 1 2 3 4 Section – 29 – SM830076 2. Processes and functions Fig. 4 2-3 Automatic Fan Speed (Indoor Unit) (A) Cooling By pressing the FAN SPEED button on the remote controller, the fan speed can be set at one of four steps: AUTO., HI., MED., or LO. When set at AUTO. the indoor unit fan speed will be automatically adjusted to the[...]

1 2 3 4 Section – 30 – SM830076 2. Processes and functions 2-4 Outdoor Fan Speed Control To optimize the performance of air conditioner, the outdoor fan speed is selected automatically according to the outdoor temperature. ❑ Note that in both Cooling and Heating modes, the fan comes on at first at high speed (H mode) for 5 seconds. Since outd[...]

1. Specifications 1 2 3 4 Section – 31 – SM830076 2. Processes and functions 2-5 Freeze Prevention (Cooling) Freeze Prevention keeps the indoor heat exchange coil from freezing. Freezing reduces the efficiency of the unit, and frost buildup on the coil blocks cool air circulation from the indoor unit's fan. Fig. 8 Note: Freeze prevention i[...]

1 2 3 4 Section – 32 – SM830076 2. Processes and functions Fig. 9 2-6 Condensing T emperature Contr ol (Cooling) Condensing temperature is controlled by the outdoor heat exchanger coil temperature as sensed by sensor C2 . Chart Explanations and notes ❑ This chart shows how the outdoor fan speed and the electronic refrigerant control valve rea[...]

1. Specifications 1 2 3 4 Section – 33 – SM830076 2. Processes and functions Fig. 10 2-7 Overload Protection (Heating) This function prevents the air conditioner from overloading. Chart Explanations and notes ❑ This chart shows how the outdoor fan speed and the electronic refrigerant control valve react to coil temperature to keep the indoor [...]

1 2 3 4 Section – 34 – SM830076 2. Processes and functions 2-8 Discharge T emperature Contr ol (Cooling and Heating) This function prevents the compressor motor from burnout by overheating. Fig. 11 Chart Summary and Explanations ❑ Discharge temperature is sensed by TH8 (discharge gas sensor). ❑ When the temperature rises above 203°F the el[...]

1. Specifications 1 2 3 4 Section – 35 – SM830076 2. Processes and functions 2-9 Auto. Mode for A utomatic Heating/Cooling Switching ❑ When the AUTO mode is selected, the microprocessor calculates the difference between the set temperature and the room temperature, and automatically switches to the COOLING or HEATING mode to maintain the desi[...]

1 2 3 4 Section – 36 – SM830076 2. Processes and functions Chart summary and Explanations ❑ This chart shows how the Operation Mode ( COOLING or HEATING ) is determined by the microprocessor taking the room temperature into consideration. It also shows the temperature points at which the cooling or heating mode is switched, when the AUTO mode[...]

1. Specifications 1 2 3 4 Section – 37 – SM830076 2. Processes and functions 2-10 Defrosting Control, Outdoor Heat Exchanger Coil (Heating) When the outdoor temperature is low, frost may form on the outdoor heat exchanger coil. When this occurred, the defrosting system operates. The microprocessor in the outdoor unit monitors the relationship b[...]

1 2 3 4 Section – 38 – SM830076 2. Processes and functions 2-11 4-W a y V alve, Solenoid Control The basic function of the 4-way valve is to direct the refrigerant in the correct direction according to the Operation Mode ( COOLING or HEATING ) selected. The following two charts show conditions of the controls and functions listed in the left ha[...]

1. Specifications 1 2 3 4 Section – 39 – SM830076 2. Processes and functions (B) AUTO Control Mode When the Compressor has stopped while in AUTO mode, the 4-way valve switches on (heating) or off (cooling) within 1 minute according to the following conditions: Fig. 16 2-12 Automatic Restart after Power Interruption This air conditionner has a p[...]

1 2 3 4 Section – 40 – SM830076 2. Processes and functions 2-13 Electronic Expansion V alve ❑ This valve allows very precise and smooth control of the amount of refrigerant flow in the system. Since the valve is operated by a step motor, the control circuits can open or close it in very exact amounts, so the degree of heating or cooling can b[...]

1. Specifications 1 2 3 4 Section – 41 – SM830076 2. Processes and functions 2-15 Compressor Current Detection Circuit ❑ The Compressor Current Detection Circuit detects the compressor current and, depending on the current range, can stop the compressor motor so it will not be damaged by overcurrent. ❑ Overcurrent can be caused by several f[...]

1 2 3 4 Section – 42 – SM830076 2. Processes and functions 2-16 Electronic Expansion V alve Control The circulation volume of the refrigerant is controlled by a pulse type electronic control valve. When the power is switched ON, the opening degree of the electronic control valve is controlled between 90 and 480 steps after setting the initial s[...]

1. Specifications 1 2 3 4 Section – 43 – SM830076 2. Processes and functions 2-17 V oltage Detection Contr ol When the power voltage falls below 160 V or rises above 260 V, operation lamp and stand-by lamp flash alternately to protect the compressor and electrical components.[...]

1 2 3 4 Section – 44 – SM830076 2. Processes and functions[...]

3. Electrical data 1 2 3 4 Section – 45 – SM830076 3. ELECTRICAL D A T A 3-1 Indoor Unit (Electric Wiring Diagram, Schematic Diagram) ............................... 46 3-2 Outdoor Unit (Electric Wiring Diagram, Schematic Diagram) ............................. 48[...]

3. Electrical data 1 2 3 4 Section – 46 – SM830076 3-1 Indoor Unit 1 1 1 1 1 XHS2432, XHS3632 TH1 TH2 TH3 2 1 2 1 2 1 3 1 2 1 LM P S Connector 3P(WHT) Connector 9P(WHT) MOV 3 1 FS 45 3 3 1 2 1 2 1 3 1 3 1 3 1 3 1 4 3 5 71 3 23 1 23 1 123456789 1 S P 23456789 123 123 1 Power Line To Outdoor Unit Control Line Terminal Plate(4P) • Electric Wirin[...]

3. Electrical data 1 2 3 4 Section – 47 – SM830076 3-1 Indoor Unit 1 1 1 1 1 XHS2432, XHS3632 • Schematic Diagram S 854-2-5268-772-00-0 (XHS) FMI 2 1 2 1 2 1 2 1 3 1 2 1 3 2 3 4 5 1 2 3 4 1 TR1 4P- U2 4P- U1 Indoor Coil Indoor Coil Room Thermistor E2 TH1 TH2 TH3 FS CR-THS2432 Controller E1 3 1 1 1 1 R 3 1 2 3 LM N COM RC1 2X 1X 3X RY1 RY2 2 1[...]

3. Electrical data 1 2 3 4 Section – 48 – SM830076 3-2 Outdoor Unit 1 1 1 1 1 CH2432 1 3 5 2 4 6 • Electric Wiring Diagram TH6 TH7 TH8 2 1 2 1 2 1 3 1 63PH 3 1 3 1 3579 1 3 1 1 3 BLK BLK BLK BLK WHT WHT TR AC 14V FMO CM PNK BRN GRY GRY WHT VLT YEL CT B A UV W RS T 3 1 32 2 1 2 1 S P 2 1 2 1 S P Connector 2P (WHT) CH 2 1 2 1 4 3 4 3 6 5 6 5 8 [...]

3. Electrical data 1 2 3 4 Section – 49 – SM830076 3-2 Outdoor Unit 1 1 1 1 1 CH2432 S 854-2-5268-582-00-2 (CH2432) Symbols Description CM FMO 52C 49FO 63PH CT RC1, RC2 TR CH 20S F1, F2 Compressor Motor Outdoor Fan Motor Compressor Motor Magnetic Contactor Outdoor Fan Motor Thermal Protector High Pressure Switch Current Transmitter Running Capa[...]

3. Electrical data 1 2 3 4 Section – 50 – SM830076 3-2 Outdoor Unit 2 2 2 2 2 CH3632 • Electric Wiring Diagram TH6 TH7 TH8 2 1 2 1 2 1 3 1 63PH 3 1 3 1 3579 1 1 3 BLK BLK BLK BLK WHT WHT TR AC 14V FMO2 CM PNK BRN GRY GRY WHT VLT YEL CT B A UV W RS T 3 1 32 2 1 2 1 S P 2 1 2 1 S P Connector 2P (WHT) CH 2 1 2 1 4 3 4 3 6 5 6 5 8 7 8 P Connector[...]

3. Electrical data 1 2 3 4 Section – 51 – SM830076 3-2 Outdoor Unit 2 2 2 2 2 CH3632 S 854-2-5268-621-00-0 (CH3632) Symbols Description CM FMO1, 2 52C 49FO1, 2 63PH CT RC1, 2, 3 TR CH 20S F1, F2 Compressor Motor Outdoor Fan Motor Compressor Motor Magnetic Contactor Outdoor Fan Motor Thermal Protector High Pressure Switch Current Transmitter Run[...]

3. Electrical data 1 2 3 4 Section – 52 – SM830076[...]

4. Service procedures 1 2 3 4 Section – 53 – SM830076 4. SER VICE PROCEDURES 4-1 Troubleshooting ............................................................................................. 54 (1) Check before and after Troubleshooting ................................................ 55 (2) General Troubleshooting Flow Chart: Diagnosis and Rem[...]

4. Service procedures 1 2 3 4 Section – 54 – SM830076 4-1 T roub leshooting This section explains: This unit is made to be trouble free, and not need much service. However, with time, moving parts wear out, electronic components break down, and sometimes misuse damages the unit. The purpose of this section is to help you when the unit is not wo[...]

4. Service procedures 1 2 3 4 Section – 55 – SM830076 (1) Check before and after Troubleshooting Many problems may happen because of wiring or power supply problems, so you should check these areas first. Problems here can cause false results in some of the other tests, and so should be corrected first. 1 1 1 1 1 . Check power supply wiring ❑[...]

4. Service procedures 1 2 3 4 Section – 56 – SM830076 (2) General Troubleshooting Flow Chart: Diagnosis and Remedy When you have found a major problem, such as refrigerant not flowing in the system or reduced air circulation, come to this section and find the box listing the problem. Connected to the box are the main causes of the problem and t[...]

4. Service procedures 1 2 3 4 Section – 57 – SM830076 (B) Heating Poor heating Is setting temp. suitable ? Change the setting temp. Is heating load too large ? Review heating load estimate. 4-way valve is defective. Replace the valve. Refrigerant shortage Charge with refrigerant. Refrigerant flow failure Electronic refrigerant control valve is [...]

4. Service procedures 1 2 3 4 Section – 58 – SM830076 (3) Meanings of alarm messages If an error occurred in the air conditioner, the error condition is presented by indicating the error code in the wired remote controller display or by the combination of lamp statuses for operation, timer and heat stand-by (OFF status and flashing status). Rem[...]

4. Service procedures 1 2 3 4 Section – 59 – SM830076 Wired remote controller display Wireless remote controller display Possible causes of troubles Operation lamp and heat stand-by lamp flash alternately. O : Operation lamp O : Timer lamp v : Heat stand-by lamp • Fault with compressor and its circuit • Thermistor failure F01 F02 F10 F04 F0[...]

4. Service procedures 1 2 3 4 Section – 60 – SM830076 (4) LED Indication on the Outdoor Unit’s P.C.B. Ass’y If something goes wrong with the outdoor unit, LED lamps on the outdoor P.C.B. Ass’y light up to show the cause of the trouble, in addition to the Alarm message on the remote controller. LED 2 on P.C. board Remote controller LED 1 o[...]

4. Service procedures 1 2 3 4 Section – 61 – SM830076 (5) Symptoms and parts to inspect 1) Symptom: LCD on the remote controller does not display and remote controller does not operate. No No No No No No No No No No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Start Replace the indoor unit PCB. Is there 12 V DC between 2 and 3 of the remote controll[...]

4. Service procedures 1 2 3 4 Section – 62 – SM830076 2) Symptom: LCD on the remote controller displays “CHECK E01”. (Unusual communication between remote controller and indoor unit.) 3) Symptom: LCD on the remote controller displays “CHECK E02”. (Unusual communication between remote controller and indoor unit) OK No NG Yes 0334_M_I Sta[...]

4. Service procedures 1 2 3 4 Section – 63 – SM830076 4) Symptom: LCD on the remote controller is displaying “CHECK E04”. (Unusual communication between the indoor and outdoor units.) 5) Symptom: LCD on the remote controller is displaying “CHECK E05”. (Unusual communication between the indoor and outdoor units) Yes No No Yes No Yes 0335[...]

4. Service procedures 1 2 3 4 Section – 64 – SM830076 6) Symptom: LCD on the remote controller is displaying “CHECK E06”. (Unusual communication between the indoor and outdoor units) * See the section of INSTALLATION INSTRUCTION concerning with flexible combination system. 7) Symptom: LCD on the remote controller is displaying “CHECK E08?[...]

4. Service procedures 1 2 3 4 Section – 65 – SM830076 9) Symptom: LCD on the remote controller displays “CHECK P01”. (Indoor fan protection thermostat operation warning) No No No Yes Yes Yes 1146_THS_I Start Is there 230-208 V AC between S4 and T20-3 on the indoor unit PCB? Is there 230-208 V AC between T20-3 and S4 after T20-1 and T20-3 on[...]

4. Service procedures 1 2 3 4 Section – 66 – SM830076 10) Symptom: LCD on the remote controller displays “CHECK P02”. (Compressor / outdoor fan protection thermostat operation warning / power supply voltage abnormality) Yes Yes No Yes No No 1147_THS_I Start Is the outdoor fan wire winding protection thermostat (49FO) off? Replace the outdoo[...]

4. Service procedures 1 2 3 4 Section – 67 – SM830076 11) Symptoms: LCD on the remote controller displays “CHECK P03”. (Alarm for unusual discharge temp. of compressor) 12) Symptom: LCD on the remote controller displays “CHECK P04”. (High-pressure switch activation warning) 0343_M_I Start Unusual discharge gas temperature • Refrigeran[...]

4. Service procedures 1 2 3 4 Section – 68 – SM830076 13) Symptom: LCD on the remote controller displays “CHECK P05”. (Negative phase detection operation warning) 14) Symptom: LCD on the remote controller displays “CHECK E15”. Yes No No No Yes Yes 0345_M_I Start Check the power breaker etc. and repair No problem Correct the connection R[...]

4. Service procedures 1 2 3 4 Section – 69 – SM830076 15) Symptom: LCD on the remote controller displays “CHECK E16”. No No No Yes Yes 0647_M_S Start Repair the wiring. When the group of the units are installed, is there any mis-cross between inter unit control wiring and refrigerant tubing? Confirm less than 5 indoor units are connected. S[...]

4. Service procedures 1 2 3 4 Section – 70 – SM830076 18) Symptom: LCD on the remote controller displays “CHECK H01, H02, H03”. (compressor current detection) * Please check the related part described in the following chart after confirming the code setting (S4) of the outdoor unit’s capacity on the PCB in the outdoor unit. 19) Check the [...]

4. Service procedures 1 2 3 4 Section – 71 – SM830076 (6) Procedures When a Specific Component Does Not Work 1) Indoor fan does not operate. No Yes Is fan motor capacitor normal ? Is there voltage output of P.C.B. Ass'y for fan motor ? • Check resistance of fan motor winding. Replace the fan motor. Replace the capacitor. Replace the P.C.[...]

4. Service procedures 1 2 3 4 Section – 72 – SM830076 3) Compressor motor does not operate. 4) Outdoor fan does not operate. No Yes Does compressor motor magnetic contactor (52C) actuate ? Replace the compressor motor magnetic contactor. Check resistance of compressor motor winding. Replace the compressor. NG 0461_M_I No Yes No Yes Is fan motor[...]

4. Service procedures 1 2 3 4 Section – 73 – SM830076 (7) Service Functions of Optional Wired Remote Controller (Temperature displayed on the screen is not °F but °C.) From the remote controller you can control both the operation and settings of the unit as well as perform several useful service checks. This section explains how to use the re[...]

4. Service procedures 1 2 3 4 Section – 74 – SM830076 (B) Use the test run procedure ❏ The purpose of the test run function is to let you control the operation of the unit directly without turning the unit on or off by thermostat. As indicated in the following procedure, be sure to stop test run operation when you finish the procedure, or the[...]

4. Service procedures 1 2 3 4 Section – 75 – SM830076 (C) Check the sensor temperature readings The air conditioner has thermo sensors which are used to control the unit. ❏ Each sensor has an address which is made up of the indoor unit address, and the sensor address. The indoor unit address is used only when several units are hooked up to on[...]

4. Service procedures 1 2 3 4 Section – 76 – SM830076 NOTE Location of Sensor (Themistor) Relationship between the sensor address and the location of sensor Sensor Address (CODE No.) Indoor Unit 01 — 02 TH1 Indoor air suction Temp. 03 TH2 Indoor coil Temp. (E1) 04 TH3 Indoor coil Temp. (E2) 05 — 06 — 07 — 08 Electronic expansion valve o[...]

4. Service procedures 1 2 3 4 Section – 77 – SM830076 This picture shows the service check display. SERVICE R.C. No. CHECK UNIT No. No. CODE 0358_M_I CODE No. No. UNIT No. 1–1 Alarm message Refrigerant Circuit No. c . A maximum of 4 alarm messages can be accessed by pressing either SET TEMP button or as follows. 0359_M_I Present Past Present [...]

4. Service procedures 1 2 3 4 Section – 78 – SM830076 Never press CL (clear) button unless you want to erase the accessed data in memory. Follow the procedure below only when erasing is necessary. ❏ To erase accessed data, press the CL button. ❏ When erasing is finished,“----” mark appears on the controller’s display. After checking t[...]

4. Service procedures 1 2 3 4 Section – 79 – SM830076 (F) Execute the auto. address operation ❏ Auto. address operation is executed by pressing the A. ADD (S1) button of outdoor unit’s PCB usually. For your convenience it can be executed by remote controller also. a Press the TEST / CHK and ( ) buttons at the same time for more than 4 secon[...]

4. Service procedures 1 2 3 4 Section – 80 – SM830076 (G) Confirm and change the indoor unit address ❏ The purpose of the above function is to let you confirm the indoor unit address after the auto. address operation, and change the indoor unit address if it is needed. a Press the TEST / CHK and ( ) buttons at the same time for more than 4 se[...]

4. Service procedures 1 2 3 4 Section – 81 – SM830076 e Set the required new indoor unit’s No. by pressing the , ( ) button. f Press the SET button. UNIT No, SET DATA (0008) and SETTING changes from flashing to ON state. g If you made a mistake, press the CL button. h Finally, press the TEST / CHK button. i If you want to change the indoor un[...]

4. Service procedures 1 2 3 4 Section – 82 – SM830076 (H) Change the shift temperature in heating mode ❏ If the indoor unit is installed at high location (ex. ceiling level), the thermostat tends to turn off at heating mode because of the hot air temperature around ceiling level. In order to solve the problem, the shift temp. (valid while hea[...]

4. Service procedures 1 2 3 4 Section – 83 – SM830076 ( I ) Set the indoor unit address ❏ This function is usable if the auto. address operation is not available. Indoor unit address can be set one by one by remote controller in such case. 1) In case of group control, branch wiring for group control should be removed temporarily. 2) In case o[...]

4. Service procedures 1 2 3 4 Section – 84 – SM830076 d Set the No. of R. C. which you want to set with , ( ) button. e Press the SET button. UNIT No., CODE No. 12, SETTING and SET DATA (0002) change from flashing to ON state. f Select the CODE No. 13 to set the indoor unit No. with the , (SET TEMP) button. g Set the indoor unit No. which you w[...]

4. Service procedures 1 2 3 4 Section – 85 – SM830076 i Select the code No. 14 to set group setting with the , (SET TEMP) button. j Set the No. of group setting as shown below with the , ( ) button. Nos. of group setting. 0 : Standard system (except group control) 1 : Main indoor unit in case of group control 2 : Sub indoor unit in case of grou[...]

4. Service procedures 1 2 3 4 Section – 86 – SM830076 (J) Change the period of the filter timer ❏ If the period of filter timer is not suitable (for example in case of dirty environment), the period can be shortened to half as follows: a Press the TEST / CHK button for more than 4 seconds. SET CL MODE FAN SPEED ON OFF • • SET TEMP . UNIT [...]

4. Service procedures 1 2 3 4 Section – 87 – SM830076 Fig. 21 Copper tube or metallic part Clip Insulation tester Probe Terminal plate 0639_X_S Fig. 22 Copper tube or metallic part Clip Insulation tester Probe 0640_X_S Fig. 23 From fan motor, compressor and other parts. Clip Probe Insulation tester Metallic part 0641_X_S Fig. 24 Earthed wire Cl[...]

4. Service procedures 1 2 3 4 Section – 88 – SM830076 (2) Checking the Protective Devices • Disconnect the connector, which consists of P (plug) and S (socket) when you want to check the protective device. • Then check continuity among plug’s (and/or socket’s) terminal as in Fig. 25 . • Normality of the protective device can be judged[...]

4. Service procedures 1 2 3 4 Section – 89 – SM830076 (3) Checking the Electrical Parts 1 Power transformer (TR1) ..................... Indoor unit *Measure the coil resistance. • Primary 230-208V ; Measure the resistance between No.1 and No.3 (WHT lead wires) terminals of 3P (WHT) socket connected to power transformer. • Secondary 14.8V ; [...]

4. Service procedures 1 2 3 4 Section – 90 – SM830076 Fan motor capacitor Compressor motor capacitor 1041_X_S Multimeter Ω Fig. 26 6 6 6 6 6 Continuity of fuse on P.C.B. Ass’y • Check for continuity using a multimeter as shown in Fig. 27. Method Used to Replace Fuse on PCB Ass’y 1. Remove the PCB Ass’y from the electrical compo- nent [...]

4. Service procedures 1 2 3 4 Section – 91 – SM830076 7 Solenoid coil of the electronic refrigerant *Measure the coil resistance. control valve (ERCV) ………… Indoor unit • Measure the resistance between No. 5 (GRY lead wire) and other terminals (another color of lead wires) of 5P (WHT) plug connected to the solenoid coil. Refer to “1-[...]

4. Service procedures 1 2 3 4 Section – 92 – SM830076 Indoor Unit • XHS2432 (4) Sensor and Solenoid Layout Diagram Outdoor Unit • CH2432 1154_THS_I TH6 (C1), (BLK) 20S 63PH TH7 (C2), (RED) TH8 (GRN) TH6, 7, 8 CM CH TH8 (GRN) ( Discharge gas) 1153_THS_I TH2 (E1), (RED) TH3 (E2), (BLK) Electronic expansion valve 1582_X_I[...]

4. Service procedures 1 2 3 4 Section – 93 – SM830076 Indoor Unit • XHS3632 (4) Sensor and Solenoid Layout Diagram Outdoor Unit • CH3632 TH6, 7, 8 CM CH TH8 (GRN) ( Discharge gas) 63PH 20S 0584_C_S 0585_C_S TH6 (C1), (BLK) TH7 (C2), (RED) TH3 (E2), (BLK) TH2 (E1), (RED) Electronic expansion valve 1583_X_I[...]

4. Service procedures 1 2 3 4 Section – 94 – SM830076 (2) Indoor heat exch. coil sensor : TH2(E1), TH3(E2) Outdoor heat exch. coil sensor : TH6(C1), TH7(C2) ( PBC-41E) (5) Thermistor Characteristic Curve (1) Room temp. sensor : TH1 (KTEC-35) – 4 5 1 42 33 24 15 05 96 8 0 5 10 15 20 25 30 35 40 T emperature ( ° F) Resistance (kn ) 1045_M_I Re[...]

4. Service procedures 1 2 3 4 Section – 95 – SM830076 (6) P.C.B. Setting ● Setting of outdoor control P.C.B. (A) Standard control (single outdoor unit) In case of single outdoor unit installation, no indoor unit’s setting is necessary for twin, triple or quartet types (2, 3 or 4 indoor units). Leave R.C. address setting at “0” as factor[...]

4. Service procedures 1 2 3 4 Section – 96 – SM830076 (7) R.C. Address Setting Method Outdoor unit R.C. address setting method In case of group control or central control, set the R.C. address to 1, 2, 3, ... according to the No. of outdoor units. (“0” when shipped from factory) 1 ON ON side OFF side 2 1 ON ON side OFF side 2 1 ON ON side O[...]

4. Service procedures 1 2 3 4 Section – 97 – SM830076 (8) Automatic Address Setting Method — For group control and central control with multiple outdoor units — Carry out automatic address setting with the remote controller. 1) All auto. address operation 1 Press the TEST / CHK and ( ) buttons at the same time for more than 4 seconds. 2 Pre[...]

4. Service procedures 1 2 3 4 Section – 98 – SM830076 (10) Items to Check Prior to Test Run 1) Turn on the power supply switch more than 5 hours before in order to charge the crank case heater. 2) Fully open the outdoor service valve after making the leak inspection of field connected tubing, vacuuming, and gas charging if necessary. 3) Check t[...]

4. Service procedures 1 2 3 4 Section – 99 – SM830076 (11) Test Run (11)-1. Preparing for Test Run Before starting the air conditioner, check the followings: (1) Remove all loose matter from the cabinet espe- cially metal filings, bits of wire, and clips. (2) Connect the control wiring correctly and tighten all electrical connections. (3) Remov[...]

4. Service procedures 1 2 3 4 Section – 100 – SM830076 Important NOTE Set the Operation Selector at the “ON” position. Other- wise the unit will stop or will not run correctly. The TEST RUN switch is used only for servicing the air conditioner. DO NOT use this switch for normal operation. Otherwise, it may put stress on the system. ● Duri[...]

4. Service procedures 1 2 3 4 Section – 101 – SM830076 (11)-3. Test Run Procedure 1) One of CN4 of all linked outdoor units shold be short. 2) In case of using system controller, zone registration is required after finishing Test run. Regarding the zone registration, please refer to Installation Instructions attached with system controller. NOT[...]

4. Service procedures 1 2 3 4 Section – 102 – SM830076 (12) P.C.B. and Parts Location ● P.C.B. (CR-THS2432) FOR INDOOR UNITS 1128_THS_I CN42 (BLU) : For wireless remote controller CN35 (GRN) : PNL CN5 (WHT) : FORCED OPR CN9 (RED) : FS CN73 (BLK) : SUP CN74 (WHT) : PRY CN77 (GRN) : LM CN80 (RED) : 26H CN3 (WHT) : TEST PIN CN2 (WHT) : CHECK PIN[...]

4. Service procedures 1 2 3 4 Section – 103 – SM830076 (12) P.C.B. and Parts Location ● P.C.B. (CR-CH2432) FOR OUTDOOR UNITS ON 3 4 2 1 0 ON 1 2 CR-CH2432 1129_THS_I CN1 (WHT) : SEC D14 (RED) : POWER LAMP CN12 (WHT) : CT1 F3 : Fuse 125V / 0.5A F1 : Fuse 250V / 3A F2 : Fuse 250V / 3A CN2 (BLU) : SG1 CN3 (BRN) : SG2 CN19 (BLU) : SUP CN4 (BLK) :[...]

4. Service procedures 1 2 3 4 Section – 104 – SM830076 (13) Checking procedure for each P.C.B. The indoor and outdoor P.C.B. have functions to check the signal transmission and reception of the serial circuit and to check the microcomputer operation. (Self-diagnosis function) ● Precautions required when checking 1. After turning off the power[...]

4. Service procedures 1 2 3 4 Section – 105 – SM830076 (14) Check Pins When shorting check pins on the indoor and outdoor PCBs, operations shown on the above table will be performed on each indoor and outdoor unit. Use check pins to perform a quick check. • When checking pin operation, stop the indoor and outdoor units with the remote control[...]

SANYO FISHER Service Company CENTRAL REGION 1739 Sands Place, Suite G Marietta, GA 30067 Phone: (770) 951-8284 Fax: (770) 951-2077 Jan. / 2000 Printed in U.S.A. • The specifications, designs, and information in this brochure are subject to change without notice.[...]