Related Manuals for Carrier 42KCR009713
Summary of Contents for Carrier 42KCR009713
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Page 1: Service Manual
Cover Service Manual AIR CONDITIONER Hi-Wall Type 42/38KCR009713 42/38KCR012713 42/38KCR018713 42/38QCR009713 42/38QCR012713 42/38QCR018713... -
Page 2: Table Of Contents
Content Content Precaution ............................ 2 Safety Precaution .......................... 2 Warning ............................2 Function ............................3 Dimension ............................ 5 Indoor unit ............................. 5 Outdoor unit ........................... 5 Refrigerant cycle diagram ......................6 Operation limits..........................7 Cooling operation ........................... 7 Heating operation .......................... 7 Wiring diagram .......................... - Page 3 Content 10.3 Diagnostic chart ........................... 28 10.4 Resetting phenomenon often occurs during operation..............29 10.5 Operation lamp flashes and Timer lamp off................... 29 10.6 Operation lamp flashes and Timer lamp on.................. 29 10.7 Operation lamp off and Timer lamp flashes................... 30 10.8 Operation lamp on and Timer lamp flashes ..................
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Page 4: Precaution
Service manual 1. Precaution 1.1 Safety Precaution To prevent injury to the user or other people and property damage, the following instructions must be followed. Incorrect operation due to ignoring instruction will cause harm or damage. Before service unit, be sure to read this service manual at first. 1.2 Warning ... - Page 5 Service manual the unit is so equipped.) Operational There is risk of physical injury, electric shock, or product Do not expose the skin directly to cool air for long failure. When the product is soaked (flooded or periods of time.
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Page 6: Function
Service manual 2. Function Indoor unit Operation ON/OFF by remote controller Sensing by room temperature Room temperature sensor. Pipe temperature sensor. Room temperature control Maintain the room temperature in accordance with the setting temperature. Starting temperature control Indoor fan is delayed for 5 sec at the starting. Time Delay Safety control Restarting is for approx. -
Page 7: Outdoor Unit
Service manual Outdoor unit Power relay control The unit has 3 mins delay between continuously ON/OFF operations. Low noise air flow system Bird tail propeller fan makes the outdoor unit run more quietly. Hydrophilic aluminum fin The hydrophilic fin can improve the heating efficiency at operation mode. 4 way valve control It is only operated in the heating operation mode except defrosting operation. - Page 8 Service manual 3. Dimension 3.1 Indoor unit Dimension Mode 9K/12K 3.2 Outdoor unit Dimension Mode...
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Page 9: Refrigerant Cycle Diagram
Service manual Refrigerant cycle diagram Cooling only Heat pump mode... -
Page 10: Operation Limits
Service manual 4. Operation limits 5.1 Cooling operation Outdoor unit air temp.℃ DB Indoor air temp. ℃ DB Note: The chart is the result from the continuous operation under constant air temperature conditions. However, excludes the initial pull-down stage. 5.2 Heating operation Indoor air temp. -
Page 11: Wiring Diagram
Service manual 5. Wiring diagram Indoor： 42KCR009713 42KCR012713 42KCR018713... - Page 12 Service manual 42QCR009713 42QCR012713 42QCR018713...
- Page 13 Service manual Outdoor: 38KCR009713 38KCR012713 38KCR018713...
- Page 14 Service manual 38QCR009713 38QCR012713 38QCR018713...
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Page 15: Installation Details
Service manual 6. Installation details Wrench torque sheet for installation Outside diameter Torque inch Kg.m φ 6.35 φ 9.52 φ 12.7 Connecting the cables The power cord of connect should be selected according to the following specifications sheet. Grade Unit Pipe length and the elevation Max. -
Page 16: Air Purging Of The Piping And Indoor Unit
Service manual Air purging of the piping and indoor unit Required tools: Hexagonal wrench; adjustable wrench; torque wrenches, wrench to hold the joints and gas leak detector. Note: The air in the indoor unit and in the piping must be purged. If air remains in the refrigeration piping, it will affect the compressor, reduce the cooling capacity, and could lead to a malfunction of unit. -
Page 17: Pumping Down (Re-Installation)
Service manual Pumping down (Re-installation) Procedure Confirm that both the 2-way and 3-way valves are set to the opened position. Remove the valve stem caps and confirm that the valve stems are in the opened position. Be sure to use a hexagonal wrench to operate the valve stems. Operate the unit for 10 to 15 minutes. -
Page 18: Re-Air Purging (Re-Installation)
Service manual Re-air purging (Re-installation) Procedure: Confirm that both the 2-way and 3-way valves are set to the closed position. Connect the charge set and a charging cylinder to the service port of the 3-way valve. Leave the valve on the charging cylinder closed. Air purging. -
Page 19: Balance Refrigerant Of The 2-Way, 3-Way Valves
Service manual Balance refrigerant of the 2-way, 3-way valves Procedure: Confirm that both the 2-way and 3-way valves are set to the open position. Connect the charge set to the 3-way valve’s service port. Leave the valve on the charge set closed. Connect the charge hose with the push pin to the service port. -
Page 20: Evacuation
Service manual Evacuation Procedure: Connect the vacuum pump to the charge set’s centre hose. Evacuation for approximately one hour. Confirm that the gauge needle has moved toward -0.1 Mpa (-76 cmHg) [vacuum of 4 mmHg or less]. Close the valve (Low side) on the charge set, turn off the vacuum pump, and confirm that the gauge needle does not move (approximately 5 minutes after turning off the vacuum pump). -
Page 21: Gas Charging
Service manual Gas charging Procedure: 1. Connect the charge hose to the charging cylinder. Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder. 2. Purge the air from the charge hose. ... -
Page 22: Electronic Function
Service manual 7. Electronic function Proper symbols and their meaning TA: Indoor ambient temperature TE: Indoor evaporator temperature TS: Setting temperature through the remote controller : Self-protection amp of compressor, continue three seconds until turns off the compressor. 3sec : Self-protection amp of compressor, continue five minutes until turns off the compressor. 5MIN : Self-protection amp of outdoor fan/indoor fans when they change from higher wind to lower wind. -
Page 23: Fan-Only Mode
Service manual If compressor turns off for continuously 4 times due to current protection in 5 minutes from Compressor On, the unit stops and LED displays failure information and can’t returns to normal operation automatically. Fan-only mode Fan speed is high/mid/low/ Auto Cooling mode The 4-way valve is closed at cooling mode. -
Page 24: Dehumidifying Mode
Service manual High fan Mid. fan Room temp. down Room temp. up Low fan T-Ts Anti-freezing control to indoor evaporator at cooling mode ( T: evaporator temp. ) Compressor and outdoor fan on EVAP. temp. down EVAP. temp. up Compressor and outdoor fan off (after 5 mins) Dehumidifying mode 8.6.1... -
Page 25: Heating Mode
Service manual Heating mode 8.7.1 Generally, the 4-way valve is open in heating mode, but it is closed in defrosting mode. 4-way valve must delay 2 minutes compared with compressor if the compressor changed into non-heating mode or turned off. 4-way valve doesn't delay in dehumidifying mode 8.7.2 Generally, the outdoor fan is turned off with the on-off action of compressor in heating mode, except for... -
Page 26: Defrosting Mode (Available For Heating Mode)
Service manual Low fan Room temp. down Room temp. up Med fan T-Ts 8.7.6 Indoor evaporator high-temperature protection at heating mode (T=indoor exchanger temp.) Compressor off Fan off Compressor on Fan off T temp. down T temp. up Compressor on Fan on 8.7.7 The louver opens to Standard Angle ANGLHEAT when power is on for the first time... -
Page 27: Auto Mode
Service manual Defrost 7.5min Defrost 7.5 min Defrost 7.5min defrost10min 8.8.3 Ending condition of defrosting If one of following conditions is satisfied, end the defrost and turn into heating mode: A. The defrost time has reached to 7.5 or 10 minutes. B. -
Page 28: Sleep Mode
Service manual 8.10.3 All protections of remote control cooling are available at forced cooling operation 8.10.4 Forced Auto function Select forced auto function with the forced auto button or the switch. In forced auto status the A/C operates at remote control mode with a set temp. of 24℃ 8.11 Sleep mode 8.11.1 The sleep function is available at cooling, heating or auto mode 8.11.2 Cooling:... -
Page 29: Model And Parameters
Service manual 8. Model and Parameters Model 38KCR009713 38KCR012713 38KCR018713 38QCR009713 38QCR012713 38QCR018713 I3SEC 10.0A 12.0A I5MIN 8.5A IFAN 6.5A IRESTORE 5.5A IDEFROST 3.5A 6.5A 7.2A 28℃ 34℃ 32℃ 36℃ 30℃ 30℃ 26℃ 20℃ 4℃ 3℃ 10℃ 14℃ 60℃ 60℃ 53℃... -
Page 30: Troubleshooting
Service manual 9. Troubleshooting 10.1 Display board Operation The indicator flashes once every second after power is on and illuminates when the air conditioner is in operation. Timer indicator: The indicator illuminates then TIMER is set ON. PRE-DEF. indicator (For cooling & heating mode only) The air conditioner starts defrosting automatically if outdoor unit frosts in heating operating. -
Page 31: Diagnostic Chart
Service manual 10.3 Diagnostic chart After energizing, no indicator is lighted and the air conditioner can’t be operated. After energizing, the air conditioner can not be operated. Check if AC 220V power supply outputs to indoor PCB. Check if AC 220V exists at the primary coil of transformer. Indoor PCB is defective. -
Page 32: Resetting Phenomenon Often Occurs During Operation
Service manual 10.4 Resetting phenomenon often occurs during operation. (That is automatically entering to the status when power is on.) The reason is that the instantaneous voltage of main chip is less than 4.5V. Check according to the following procedure: Resetting phenomenon often occurs during operation. -
Page 33: Operation Lamp Off And Timer Lamp Flashes
Service manual 10.7 Operation lamp off and Timer lamp flashes Operation lamp off and Timer lamp flashes After changing the main control board, check if the failure realease. Indoor PCB is defective. The voltage of power supply is too low (less than 187V). Outdoor unit fault (such as the compressor). -
Page 34: Characteristic Of Temperature Sensor
Service manual 10. Characteristic of temperature sensor Resistance KΩ Resistance KΩ Resistance KΩ Temp.℃ Temp.℃ Temp.℃ 62.2756 14.6181 4.3874 58.7079 13.918 4.2126 56.3694 13.2631 4.0459 52.2438 12.6431 3.8867 49.3161 12.0561 3.7348 46.5725 11.5 3.5896 10.9731 3.451 41.5878 10.4736 3.3185 39.8239 3.1918 37.1988 9.5507... - Page 35 Cover Service Manual AIR CONDITIONER Hi-Wall Type 42/38KCR024713 42/38QCR024713...
- Page 36 Content Content Precaution 1.1 Safety Precaution 2 1.2 Warning 2 Function Dimension 3.1 Indoor unit 3.2 Outdoor unit 5 Refrigerant cycle diagram 6 Operation limits 7 5.1 Cooling operation 7 5.2 Heating operation 7 Wiring diagram Installation details 7.1 Wrench torque sheet for installation 7.2 Connecting the cables 10 7.3 Pipe length and the elevation 7.4 Air purging of the piping and indoor unit...
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Page 37: Precaution
Service manual 1. Precaution 1.1 Safety Precaution To prevent injury to the user or other people and property damage, the following instructions must be followed. Incorrect operation due to ignoring instruction will cause harm or damage. Before service unit, be sure to read this service manual at first. 1.2 Warning ... - Page 38 Service manual the unit is so equipped.) Operational There is risk of physical injury, electric shock, or product Do not expose the skin directly to cool air for long failure. When the product is soaked (flooded or periods of time.
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Page 39: Function
Service manual 2. Function Indoor unit Operation ON/OFF by remote controller Sensing by room temperature Room temperature sensor. Pipe temperature sensor. Room temperature control Maintain the room temperature in accordance with the setting temperature Starting temperature control Indoor fan is delayed for 5 sec at the starting. Room temperature control Time Delay Safety control Compressor failure... -
Page 40: Outdoor Unit
Service manual Outdoor unit Power relay control The unit has 3 mins delay between continuously ON/OFF operations. Low noise air flow system Bird tail propeller fan makes the outdoor unit run more quietly. Hydrophilic aluminum fin The hydrophilic fin can improve the heating efficiency at operation mode. 4 way valve control It is only operated in the heating operation mode except defrosting operation. - Page 41 Service manual 3. Dimension 3.1 Indoor unit Model 1030 3.2 Outdoor unit Dimension Mode...
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Page 42: Refrigerant Cycle Diagram
Service manual 4. Refrigerant cycle diagram Cooling only Heat pump mode... -
Page 43: Operation Limits
Service manual 5. Operation limits 5.1 Cooling operation Outdoor unit air temp.℃ DB Indoor air temp. ℃ DB Note: The chart is the result from the continuous operation under constant air temperature conditions. However, excludes the initial pull-down stage. 5.2 Heating operation Indoor air temp. -
Page 44: Wiring Diagram
Service manual 6. Wiring diagram Indoor： 42KCR024713 42QCR024713 Outdoor： 38KCR024713... - Page 45 Service manual 38QCR024713...
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Page 46: Installation Details
Service manual 7. Installation details Wrench torque sheet for installation Outside diameter Torque inch Kg.m φ 9.52 φ 12.7 φ 15.88 Connecting the cables The power cord of connect should be selected according to the following specifications sheet. Grade Unit Pipe length and the elevation Max. -
Page 47: Air Purging Of The Piping And Indoor Unit
Service manual Air purging of the piping and indoor unit Required tools: Hexagonal wrench; adjustable wrench; torque wrenches, wrench to hold the joints and gas leak detector. Note: The air in the indoor unit and in the piping must be purged. If air remains in the refrigeration piping, it will affect the compressor, reduce the cooling capacity, and could lead to a malfunction of unit. -
Page 48: Pumping Down (Re-Installation)
Service manual Pumping down (Re-installation) Procedure Confirm that both the 2-way and 3-way valves are set to the opened position. Remove the valve stem caps and confirm that the valve stems are in the opened position. Be sure to use a hexagonal wrench to operate the valve stems. Operate the unit for 10 to 15 minutes. -
Page 49: Re-Air Purging (Re-Installation)
Service manual Re-air purging (Re-installation) Procedure: Confirm that both the 2-way and 3-way valves are set to the closed position. Connect the charge set and a charging cylinder to the service port of the 3-way valve. Leave the valve on the charging cylinder closed. Air purging. -
Page 50: Balance Refrigerant Of The 2-Way, 3-Way Valves
Service manual Balance refrigerant of the 2-way, 3-way valves Procedure: Confirm that both the 2-way and 3-way valves are set to the open position. Connect the charge set to the 3-way valve’s service port. Leave the valve on the charge set closed. Connect the charge hose with the push pin to the service port. -
Page 51: Evacuation
Service manual Evacuation Procedure: Connect the vacuum pump to the charge set’s centre hose. Evacuation for approximately one hour. Confirm that the gauge needle has moved toward -0.1 Mpa (-76 cmHg) [vacuum of 4 mmHg or less]. Close the valve (Low side) on the charge set, turn off the vacuum pump, and confirm that the gauge needle does not move (approximately 5 minutes after turning off the vacuum pump). -
Page 52: Gas Charging
Service manual Gas charging Procedure: 1. Connect the charge hose to the charging cylinder. Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder. 2. Purge the air from the charge hose. ... -
Page 53: Electronic Function
Service manual 8. Electronic function 8.1 Electronic control working environment Input voltage: 175~253V Input power frequency: 60Hz Ambient temperature: -7C~45C Indoor fan normal working amp is less than 1A Outdoor fan normal working amp is less than 1.5A Four-way valve normal working amp is less than 1A Swing motor: DC12V Compressor: single-phase power supply. - Page 54 Service manual 8.4 Protection 8.4.1 3 minutes delay at restart for compressor. 8.4.2 Sensor protection at open circuit and breaking disconnection 8.4.3 Fan Speed is out of control. When Indoor Fan Speed is too high(higher than High Fan+300RPM)or too low(lower than 400RPM), the unit stops and LED displays failure information and can’t returns to normal operation automatically.
- Page 55 Service manual Auto fan at cooling mode: High fan Mid. fan Room temp. down Room temp. up Low fan T-Ts Anti-freezing control to indoor evaporator at cooling mode ( T: evaporator temp. ) Compressor and outdoor fan on EVAP. temp. down EVAP.
- Page 56 Service manual defrosting mode or the end of defrost. 8.8.3 Action of compressor and outdoor fan motor at heating mode: compressor must run for 7 minutes after starting and then judge temperature. Meanwhile other protections are still valid. Compressor and outdoor fan off Room temp.
- Page 57 Service manual Compressor off Fan off Compressor on Fan off T temp. down T temp. up Compressor on Fan on The louver opens to Standard Angle ANGLHEAT when power is on for the first time 8.9 Defrosting mode(available for heating mode) 8.9.1 Defrosting condition: Defrost starts when either of the following: The compressor works under the condition that T3 lower than 0’C add up to more than 40 minutes, and under...
- Page 58 Service manual Heating (fan only at cooling) Fan only Cooling TA-TS 8.10.2 The indoor fan blows automatically in corresponding selected mode； 8.10.3 The motion of indoor fan’s blade should accord with the selected operation mode； 8.10.4 One mode should be carried out for at least 15 minutes once selected. If the compressor cannot start for 15 minutes, reselect the operation mode according to the room temp.
- Page 59 Service manual The set temperature decrease 1℃ per hour. Two hours later, the set temperature will maintain as a constant and the air circulation is kept at low speed (Anti-cold function takes precedence over all). Room temperature Time 8.12.4 Auto: After an hour running under economic mode, the set temp will rise 1℃, if it is under cooling mode;...
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Page 60: Model And Parameters
Service manual 9. Model and Parameters Model 38KCR024713 38QCR024713 I3SEC I5MIN IFAN 25℃ 32℃ 30℃ 20℃ 2℃ 12℃ 63℃ 55℃ 50℃ ANGLCOOL ANGLHEAT ANGLOFF... -
Page 61: Troubleshooting
Service manual 10. Troubleshooting Display board 10.1 Operation The indicator flashes once every second after power is on and illuminates when the air conditioner is in operation. Timer indicator: The indicator illuminates then TIMER is set ON. PRE-DEF. -
Page 62: Diagnostic Chart
Service manual NOTE: For cool only model, the defrosting lamp is replaced with fan lamp, but malfunction display remains. Diagnostic chart 10.3 After energizing, no indicator is lighted and the air conditioner can’t be operated. After energizing, the air conditioner can not be operated. Check if AC 220V power supply outputs to indoor PCB. -
Page 63: Resetting Phenomenon Often Occurs During Operation
Service manual Resetting phenomenon often occurs during operation. 10.4 (That is automatically entering to the status when power is on.) The reason is that the instantaneous voltage of main chip is less than 4.5V. Check according to the following procedure: Resetting phenomenon often occurs during operation. - Page 64 Service manual 10.6 Temperature sensor error. Including the indoor room, indoor evaporator and outdoor condenser temperature sensor. Is connector connection good? Repair the connector. Replace the sencor, 10.7 Outdoor unit protects Check if the power supply is good Power supply failure Change outdoor PCB and check if the error is still exit Outdoor PCB failure...
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Page 65: Characteristic Of Temperature Sensor
Service manual 11. Characteristic of temperature sensor Resistance KΩ Resistance KΩ Resistance KΩ Temp.℃ Temp.℃ Temp.℃ 62.2756 14.6181 4.3874 58.7079 13.918 4.2126 56.3694 13.2631 4.0459 52.2438 12.6431 3.8867 49.3161 12.0561 3.7348 46.5725 11.5 3.5896 10.9731 3.451 41.5878 10.4736 3.3185 39.8239 3.1918 37.1988 9.5507...
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