Service Manual
Page 2
...instructions when wiring. Provide a suitable air baffle. Escaped refrigerant gas, on a raised platform that no metal scraps or bits of Improper Installation The manufacturer shall in no refrigerant gas is leaking. Carefully refer to provide a solid, level foundation for Heat Pump-type Systems) Install the outdoor ...are used in severe personal injury or death. In Case of wiring have been left inside a room to check or repair electrical parts and wiring. • Keep your fingers and clothing away from any moving the indoor and outdoor units. Sharp edges or thin ...
...instructions when wiring. Provide a suitable air baffle. Escaped refrigerant gas, on a raised platform that no metal scraps or bits of Improper Installation The manufacturer shall in no refrigerant gas is leaking. Carefully refer to provide a solid, level foundation for Heat Pump-type Systems) Install the outdoor ...are used in severe personal injury or death. In Case of wiring have been left inside a room to check or repair electrical parts and wiring. • Keep your fingers and clothing away from any moving the indoor and outdoor units. Sharp edges or thin ...
Service Manual
Page 3
... Error Monitop Lamps 48 8-3. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT 9-1. Charging Additional Refrigerant 61 9-8. ELECTRICAL DATA 6-1. Precautions before Servicing 56 9-3. Trouble Diagnosis of Each Part 50 8-5. Tools Specifically for R410A 57 9-4. In Case Refrigerant is Leaking 60 9-7. FUNCTIONS 7-1. Protective Functions ...45 8. Trouble Diagnosis of Fan Motor 54 9. Unit Specifications ...6 2-2. Checking...
... Error Monitop Lamps 48 8-3. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT 9-1. Charging Additional Refrigerant 61 9-8. ELECTRICAL DATA 6-1. Precautions before Servicing 56 9-3. Trouble Diagnosis of Each Part 50 8-5. Tools Specifically for R410A 57 9-4. In Case Refrigerant is Leaking 60 9-7. FUNCTIONS 7-1. Protective Functions ...45 8. Trouble Diagnosis of Fan Motor 54 9. Unit Specifications ...6 2-2. Checking...
Service Manual
Page 12
...Part No. Control Operation cut -off control in abnormal ambient Temp. inch (mm) Fan Motor Type Model ... Major Component Specifications 2-2-1. Overload Relay Model Operation Temp. of Poles Rough Measure RPM (Cool) Nominal Output Coil Resistance (Ambient Temp. 68 °F (20 °C)) W Ohm Safety Device Type Over-Current Protection Over-Heat... Protection Run Capacitor Heat Exchanger Coil Coil Rows Fins per inch Face Area External Finish Micro F VAC ft2 (m2) 12 CB-...
...Part No. Control Operation cut -off control in abnormal ambient Temp. inch (mm) Fan Motor Type Model ... Major Component Specifications 2-2-1. Overload Relay Model Operation Temp. of Poles Rough Measure RPM (Cool) Nominal Output Coil Resistance (Ambient Temp. 68 °F (20 °C)) W Ohm Safety Device Type Over-Current Protection Over-Heat... Protection Run Capacitor Heat Exchanger Coil Coil Rows Fins per inch Face Area External Finish Micro F VAC ft2 (m2) 12 CB-...
Service Manual
Page 13
... Output Coil Resistance (Ambient Temp. 68 °F (20 °C)) W Ohm Safety Device Type Over-Current Protection Over-Heat Protection Run Capacitor Heat Exchanger Coil Coil Rows Fins per inch Face Area External Finish Micro F VAC ft2 (m2) 13 CB-CM2572 Microprocessor 250V... 25A DC Twin Rotary (Hermetic) 5KD240XAB21 / 1,700W FV50S ... 1.91 (900) U - W : 0.708 W - D18-1/8 (D460) DC Motor SIC-71FW-D490-1 ... 1 8 750 90 - Outdoor Unit CM2472 Control PCB Part...
... Output Coil Resistance (Ambient Temp. 68 °F (20 °C)) W Ohm Safety Device Type Over-Current Protection Over-Heat Protection Run Capacitor Heat Exchanger Coil Coil Rows Fins per inch Face Area External Finish Micro F VAC ft2 (m2) 13 CB-CM2572 Microprocessor 250V... 25A DC Twin Rotary (Hermetic) 5KD240XAB21 / 1,700W FV50S ... 1.91 (900) U - W : 0.708 W - D18-1/8 (D460) DC Motor SIC-71FW-D490-1 ... 1 8 750 90 - Outdoor Unit CM2472 Control PCB Part...
Service Manual
Page 14
...(Cool) Nominal Output Coil Resistance (Ambient Temp. 68 °F (20 °C)) W Ohm Safety Device Type Over-Current Protection Over-Heat Protection Run Capacitor Heat Exchanger Coil Coil Rows Fins per inch Face Area External Finish Micro F VAC ft2 (m2) 14 CB-CM3172 Microprocessor 250V 25A DC ...: 239 °F (115 °C), Close : 212 °F (100 °C) - inch (mm) Fan Motor Type Model ... Outdoor Unit CM3172 Control PCB Part No. Amount Pints (cc) Coil Resistance (Ambient Temp. 68 °F (20 °C)) Ohm Safety Device CT (Peak current cut -off control) Compressor Discharge Temp....
...(Cool) Nominal Output Coil Resistance (Ambient Temp. 68 °F (20 °C)) W Ohm Safety Device Type Over-Current Protection Over-Heat Protection Run Capacitor Heat Exchanger Coil Coil Rows Fins per inch Face Area External Finish Micro F VAC ft2 (m2) 14 CB-CM3172 Microprocessor 250V 25A DC ...: 239 °F (115 °C), Close : 212 °F (100 °C) - inch (mm) Fan Motor Type Model ... Outdoor Unit CM3172 Control PCB Part No. Amount Pints (cc) Coil Resistance (Ambient Temp. 68 °F (20 °C)) Ohm Safety Device CT (Peak current cut -off control) Compressor Discharge Temp....
Service Manual
Page 39
Electric Wiring Diagrams Outdoor Unit CM1972 To avoid electrical shock hazard, be sure to WARNING disconnect power before checking, servicing and/or cleaning any electrical parts. 8FA2-5257-58800-1 39 REACTANCE BLK UNIT COMPRESSOR THERMISTOR BLK BLK COMP 1234 1234 COIL/OUTDOOR 11 22 WU WV WW FM 1234567 1234 1234 A-...
Electric Wiring Diagrams Outdoor Unit CM1972 To avoid electrical shock hazard, be sure to WARNING disconnect power before checking, servicing and/or cleaning any electrical parts. 8FA2-5257-58800-1 39 REACTANCE BLK UNIT COMPRESSOR THERMISTOR BLK BLK COMP 1234 1234 COIL/OUTDOOR 11 22 WU WV WW FM 1234567 1234 1234 A-...
Service Manual
Page 40
... TO INDDOR UNIT UNIT UNIT UNIT To avoid electrical shock hazard, be sure to WARNING disconnect power before checking, servicing and/or cleaning any electrical parts. 8FA2-5257-59000-1 40 COMPRESSOR THERMISTOR BLK BLK COMP 1234 1234 COIL/OUTDOOR 11 22 WU WV WW FM 1234567 1234 1234 A-TH 1234 1234...
... TO INDDOR UNIT UNIT UNIT UNIT To avoid electrical shock hazard, be sure to WARNING disconnect power before checking, servicing and/or cleaning any electrical parts. 8FA2-5257-59000-1 40 COMPRESSOR THERMISTOR BLK BLK COMP 1234 1234 COIL/OUTDOOR 11 22 WU WV WW FM 1234567 1234 1234 A-TH 1234 1234...
Service Manual
Page 41
... UNIT UNIT UNIT TO INDDOR UNIT To avoid electrical shock hazard, be sure to WARNING disconnect power before checking, servicing and/or cleaning any electrical parts.
... UNIT UNIT UNIT TO INDDOR UNIT To avoid electrical shock hazard, be sure to WARNING disconnect power before checking, servicing and/or cleaning any electrical parts.
Service Manual
Page 47
...the indoor unit and outdoor unit include electronic control circuits. For example, if the outdoor control circuit board fuse has blown, approximately 30 minutes will be required for the charge to dissipate. High-capacity electrolytic capacitors are used inside the outdoor unit controller (inverter). ...311 V) even after the power is turned OFF, and some time is thought there might be required to touch any electrified parts before the control circuit board Power Lamp (red) turns OFF. Precautions before inspecting or repairing the outdoorside electronic circuits. 8. However, allow...
...the indoor unit and outdoor unit include electronic control circuits. For example, if the outdoor control circuit board fuse has blown, approximately 30 minutes will be required for the charge to dissipate. High-capacity electrolytic capacitors are used inside the outdoor unit controller (inverter). ...311 V) even after the power is turned OFF, and some time is thought there might be required to touch any electrified parts before the control circuit board Power Lamp (red) turns OFF. Precautions before inspecting or repairing the outdoorside electronic circuits. 8. However, allow...
Service Manual
Page 50
.... The electric expansion valve does not operate. Self-Diagnostics check Indoor controller (control unit) Indoor fan motor Room temperature sensor Heat exchanger temperature sensor Inter-unit cable Switch circuit board Outdoor control circuit board (1) Diode module HIC Electrolytic capacitor Fuse (2) Compressor... Branch tubing temperature sensor (7) Outdoor unit 50 Trouble Diagnosis of Each Part and Inspection Points For details about the inspection points, refer to the Inspection Points for Each part Indoor unit Indoor unit does not operate. Operation lamp does not illuminate...
.... The electric expansion valve does not operate. Self-Diagnostics check Indoor controller (control unit) Indoor fan motor Room temperature sensor Heat exchanger temperature sensor Inter-unit cable Switch circuit board Outdoor control circuit board (1) Diode module HIC Electrolytic capacitor Fuse (2) Compressor... Branch tubing temperature sensor (7) Outdoor unit 50 Trouble Diagnosis of Each Part and Inspection Points For details about the inspection points, refer to the Inspection Points for Each part Indoor unit Indoor unit does not operate. Operation lamp does not illuminate...
Service Manual
Page 51
... board connector when power is being supplied to 8-3-1. Operation lamp blinking. Indoor fan dose not turn . of Inspection Points for Each Part (1) Outdoor control circuit board Refer to it. (The controller will be damaged.) (2) Fuse Check it visually or the continuity with ... The compressor stops on occasion. Problems Indoor unit Inspection points Breaker Refrigerant gas pressure Outdoor unit Others No. Inspection Points for Each part (8) (9) 8-4-2. The compressor (only) does not operate. Checking the outdoor unit. Outdoor unit does not operate. The electric expansion ...
... board connector when power is being supplied to 8-3-1. Operation lamp blinking. Indoor fan dose not turn . of Inspection Points for Each Part (1) Outdoor control circuit board Refer to it. (The controller will be damaged.) (2) Fuse Check it visually or the continuity with ... The compressor stops on occasion. Problems Indoor unit Inspection points Breaker Refrigerant gas pressure Outdoor unit Others No. Inspection Points for Each part (8) (9) 8-4-2. The compressor (only) does not operate. Checking the outdoor unit. Outdoor unit does not operate. The electric expansion ...
Service Manual
Page 52
...Open and close the valve. Sequence CM1972 MV0 MV1 MV2 CM2472 CM3172 MV0 MV1 MV2 MV3 Check the illumination of the electric expansion valve. This part is 46 + / - 4ohm at the inlet and outlet tubes of the red Power Lamp. Then start the unit and measure the temperature...temperature difference between the gray lead wire and the other means while welding. Controller check No voltage on circuit board Voltage varies Use a multi-meter to identify them. (6) Electric expansion valve When replacing the electric expansion valve and coil, be sure to reapply the outdoor power...
...Open and close the valve. Sequence CM1972 MV0 MV1 MV2 CM2472 CM3172 MV0 MV1 MV2 MV3 Check the illumination of the electric expansion valve. This part is 46 + / - 4ohm at the inlet and outlet tubes of the red Power Lamp. Then start the unit and measure the temperature...temperature difference between the gray lead wire and the other means while welding. Controller check No voltage on circuit board Voltage varies Use a multi-meter to identify them. (6) Electric expansion valve When replacing the electric expansion valve and coil, be sure to reapply the outdoor power...
Service Manual
Page 64
... power to a hazard or unsafe practice which can produce dangerously toxic gas. • Confirm upon completing installation that is an important part of Improper Installation The manufacturer shall in this instruction booklet before connecting them, then tighten the nut with a torque wrench for a ...to check or repair electrical parts and wiring. • Keep your fingers and clothing away from any moving the indoor and outdoor units. Provide a suitable air baffle. ...In a Snowy Area (for Heat Pump-type Systems) Install the outdoor unit on the air conditioner can result in contact...
... power to a hazard or unsafe practice which can produce dangerously toxic gas. • Confirm upon completing installation that is an important part of Improper Installation The manufacturer shall in this instruction booklet before connecting them, then tighten the nut with a torque wrench for a ...to check or repair electrical parts and wiring. • Keep your fingers and clothing away from any moving the indoor and outdoor units. Provide a suitable air baffle. ...In a Snowy Area (for Heat Pump-type Systems) Install the outdoor unit on the air conditioner can result in contact...
Service Manual
Page 65
...as detailed in the outdoor unit. 1-3. Cut each (3/8" 1/2") 5. Foamed polyethylene insulation for deburring) 16. Refer to install the air conditioning system. Also, check any specified instructions or limitations. Thickness 1/4" (6.35 mm) 0.0314" (0.8 mm) 1/4" (6.35 mm... pump (For R410A) 17. Manifold valve Figure Q'ty Parts 4 Reducer (1/2" 3/8") 1972 1 Figure Q'ty 2472 1 3172 2 Packed in Table 2. Wire size varies with Unit Table 1 Parts Figure Q'ty Parts ... lengths 1' to 1'4" (30 cm to 40 cm) to precise length of tubing. Consult your nearest sales outlet or ...
...as detailed in the outdoor unit. 1-3. Cut each (3/8" 1/2") 5. Foamed polyethylene insulation for deburring) 16. Refer to install the air conditioning system. Also, check any specified instructions or limitations. Thickness 1/4" (6.35 mm) 0.0314" (0.8 mm) 1/4" (6.35 mm... pump (For R410A) 17. Manifold valve Figure Q'ty Parts 4 Reducer (1/2" 3/8") 1972 1 Figure Q'ty 2472 1 3172 2 Packed in Table 2. Wire size varies with Unit Table 1 Parts Figure Q'ty Parts ... lengths 1' to 1'4" (30 cm to 40 cm) to precise length of tubing. Consult your nearest sales outlet or ...
Service Manual
Page 73
... K I B J H C K 4- 1/4" G (4- 6.5 mm) AE G F B G Fig. 5g D Fig. 5h For Air Intake Dimensions A B C D E F G Model CLM1972, CLM2472 (inch) 25-3/16 25/32 1-31/32 25 10-5/8 10-5/8 25/64 (mm) 640 20 50 635 270 270 10 CLM3172 (inch) 25-3/16 25/32 1-3/8 30-29/32 13-25/32 13-25/32 25/64...25 Material to be used: Metal plate with corrosion protection treatment Plate thickness: 0.0394 to 0.0472" (1.0 to 1.2 mm) (2) Parts required (field supply except for screws) Air Intake Baffle Item Q'ty Remarks Baffle plate 1 Screw 5/32 × 15/32" (4 × 12 mm) tapping 2 ...
... K I B J H C K 4- 1/4" G (4- 6.5 mm) AE G F B G Fig. 5g D Fig. 5h For Air Intake Dimensions A B C D E F G Model CLM1972, CLM2472 (inch) 25-3/16 25/32 1-31/32 25 10-5/8 10-5/8 25/64 (mm) 640 20 50 635 270 270 10 CLM3172 (inch) 25-3/16 25/32 1-3/8 30-29/32 13-25/32 13-25/32 25/64...25 Material to be used: Metal plate with corrosion protection treatment Plate thickness: 0.0394 to 0.0472" (1.0 to 1.2 mm) (2) Parts required (field supply except for screws) Air Intake Baffle Item Q'ty Remarks Baffle plate 1 Screw 5/32 × 15/32" (4 × 12 mm) tapping 2 ...
Service Manual
Page 74
...is between 13/32 - 19/32 inch (10 - 15 mm). 4. Finish the edges of the windbaffle to prevent contact of the bolts and heat exchanger and other parts inside the unit, install the windbaffle using bolts from inside the unit and fasten the bolts with nuts from the unit and drill 4 holes...is between 19/32 - 25/32 inch (15 - 20 mm). 5. Remove the panel side L, and drill 3 holes of ø1/4 inch (6.5 mm) at the prescribed position. 3. Air Discharge Baffle 1. Install the windbaffle on the unit, the unit has higher wind resistance. Particular care must be used are used are 15/64" (M6...
...is between 13/32 - 19/32 inch (10 - 15 mm). 4. Finish the edges of the windbaffle to prevent contact of the bolts and heat exchanger and other parts inside the unit, install the windbaffle using bolts from inside the unit and fasten the bolts with nuts from the unit and drill 4 holes...is between 19/32 - 25/32 inch (15 - 20 mm). 5. Remove the panel side L, and drill 3 holes of ø1/4 inch (6.5 mm) at the prescribed position. 3. Air Discharge Baffle 1. Install the windbaffle on the unit, the unit has higher wind resistance. Particular care must be used are used are 15/64" (M6...
Service Manual
Page 80
...21 adapter correctly. Note that both narrow and wide tube service valves on wide tube side I Air Purging with a Vacuum Pump (for Test Run) With push-pin G In order to protect the earth's environment, be...of refrigerant may lead to corrosion of parts in (70 - 110 kgf·cm) (Tighten by hand, then use a manifold valve for R410A) Fig. 20 Vacuum pump CAUTION In order to prevent charging errors... small amount of the manifold valve must be sure to use a wrench to turn approximately 30 .) pressure gauges) to turn.) (2) Using an adjustable wrench or box wrench, remove the...
...21 adapter correctly. Note that both narrow and wide tube service valves on wide tube side I Air Purging with a Vacuum Pump (for Test Run) With push-pin G In order to protect the earth's environment, be...of refrigerant may lead to corrosion of parts in (70 - 110 kgf·cm) (Tighten by hand, then use a manifold valve for R410A) Fig. 20 Vacuum pump CAUTION In order to prevent charging errors... small amount of the manifold valve must be sure to use a wrench to turn approximately 30 .) pressure gauges) to turn.) (2) Using an adjustable wrench or box wrench, remove the...
Service Manual
Page 83
....) Max. Wrong wiring may cause the unit to misoperate or become damaged. (5) Do not allow wiring to touch the refrigerant tubing, compressor, or any moving parts of the fan. (6) Unauthorized changes in accordance with a power supply disconnect and circuit breaker for any damage or misoperation that occurs as a result of the...
....) Max. Wrong wiring may cause the unit to misoperate or become damaged. (5) Do not allow wiring to touch the refrigerant tubing, compressor, or any moving parts of the fan. (6) Unauthorized changes in accordance with a power supply disconnect and circuit breaker for any damage or misoperation that occurs as a result of the...
Service Manual
Page 84
...G Grounding is necessary, especially for antenna, signal, or power lines of television, radio, stereo, telephone, security system, or intercom any moving part. G Be sure to connect the power supply line to the outdoor unit as shown in order to release charged electricity and electrical noise caused by... national or local codes. WARNING G Be sure to comply with local codes on terminals of electric shock, each air conditioner unit must be firmly connected. G Each wire must be grounded. G Be sure to connect power wires correctly match- Electrical noise may...
...G Grounding is necessary, especially for antenna, signal, or power lines of television, radio, stereo, telephone, security system, or intercom any moving part. G Be sure to connect the power supply line to the outdoor unit as shown in order to release charged electricity and electrical noise caused by... national or local codes. WARNING G Be sure to comply with local codes on terminals of electric shock, each air conditioner unit must be firmly connected. G Each wire must be grounded. G Be sure to connect power wires correctly match- Electrical noise may...
