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SPLIT INVERTER AIR CONDITIONERS
Service Manual
Comfort
Outdoor Unit:
IMPORTANT
NOTE:
Read this manual carefully before operating your
new air conditioning unit. Make sue to save this
manual for future reference.
Please check the applicable models, technical data,
F-GAS(if any) and manufacturer information from the "Owner's
Manual - Product Fiche " in the packaging of the outdoor unit.
Sta
恁）
CSL18CD CSL24CD
CSL36CD CSL48CD
CSL60CD
CSL18CD-M CSL24CD-M
CSL36CD-M CSL48CD-M
CSL60CD-M
且』
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Table of Contents
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Summary of Contents for ComfortStar CSL18CD
- Page 1 SPLIT INVERTER AIR CONDITIONERS Service Manual Comfort 恁） Outdoor Unit: CSL18CD CSL24CD CSL36CD CSL48CD CSL60CD CSL18CD-M CSL24CD-M CSL36CD-M CSL48CD-M CSL60CD-M 且』 IMPORTANT NOTE: Read this manual carefully before operating your new air conditioning unit. Make sue to save this manual for future reference.
- Page 2 Content Part 1 General Information ...................2 Part 2 Component Layout and Refrigerant Circuit............4 Part 3 Wiring Diagram....................8 Part 4 Diagnosis and Troubleshooting..............15...
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Page 3: General Information
DC Inverter Split Outdoor Unit - Part1 Part 1 General Information 1 Product lineup .............................2 2 Specifications ............................3... -
Page 4: Product Lineup
DC Inverter Split Outdoor Unit - Part1 1 Product lineup Model Capacity(Btu/h) Appearance CSL18CD 18000 CSL18CD-M CSL24CD 24000 CSL24CD-M CSL36CD 36000 CSL36CD-M CSL48CD 48000 CSL48CD-M CSL60CD 55000 CSL60CD-M... -
Page 5: Specifications
DC Inverter Split Outdoor Unit - Part1 2 Specifications... - Page 6 DC Inverter Split Outdoor Unit - Part2 Part 2 Component Layout and Refrigerant Circuit 1 Layout Functional Components ......................5 2 Piping diagrams ...........................7...
- Page 7 DC Inverter Split Outdoor Unit - Part2 1 Layout Functional Components CSL18CD, CSL18CD-M CSL24CD,CSL24CD-M...
- Page 8 DC Inverter Split Outdoor Unit - Part2 CSL36CD, CSL36CD-M CSL48CD, CSL48CD-M CSL60CD, CSL60CD-M...
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Page 9: Piping Diagrams
DC Inverter Split Outdoor Unit - Part2 2 Piping diagrams Component(Outdoor unit) Component(Outdoor unit) Compressor Filter Exhaust temperature sensor(TP) Liquid Stop Valve High pressure switch Gas Stop Valve Ambient temperature sensor(T4) Filter Condenser coil temperature sensor(3) Pressure sensor Condenser Gas-liquid separator Outdoor fan Low pressure switch Refrigerant cooling pipe... -
Page 10: Wiring Diagram
DC Inverter Split Outdoor Unit - Part3 Part 3 Wiring Diagram 1 Electric wiring diagram ........................9 2 PCB ..............................10 3 Low voltage wiring diagram ......................12... -
Page 11: Electric Wiring Diagram
DC Inverter Split Outdoor Unit - Part3 1 Electric wiring diagram... - Page 12 DC Inverter Split Outdoor Unit - Part3 2 PCB...
- Page 13 DC Inverter Split Outdoor Unit - Part3 Definition and uses of the button K1: Press “K1” once to enter the outdoor unit parameter inspection. K2: Press “K2” to view the parameters in sequence. K3: Press “K3” to view the parameters in reverse order. K4: "SET”...
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Page 14: Low Voltage Wiring Diagram
DC Inverter Split Outdoor Unit - Part3 3 Low voltage wiring diagram The following wiring diagram are suitable for the Indoor Unit and Outdoor Unit with 24V thermostat. - Page 15 DC Inverter Split Outdoor Unit - Part3...
- Page 16 DC Inverter Split Outdoor Unit - Part3 Control Logic： Note： DH wiring is optional and requires a thermostat with a humidistat. DH functions as Passive Dehumidification and will downstage the indoor fan to first stage. System will operate according to normal sequence of operations if DH wiring is absent.
- Page 17 DC Inverter Split Outdoor Unit - Part4 Part 4 Diagnosis and Troubleshooting 1 Error code table ..........................16 2 Troubleshooting ..........................18 2.1 Safety Precautions ........................18 2.2 ATL Troubleshooting ........................21 2.3 E1/F0 Troubleshooting ......................22 2.4 F4/F5/F6/FC/FE/E2/E3/H8 Troubleshooting ................23 2.5 E8 Troubleshooting ......................... 24 2.6 E9 Troubleshooting .........................
- Page 18 Over current protection Discharge temperature protection T3 high temperature protection in cooling mode Compressor inverter module protection Indoor unit anti-freezing protection(Applicable only when communication is established between the ComfortStar outdoor unit and the ComfortStar indoor unit via RS485) IPM high temperature protection...
- Page 19 T3/TP temperature sensor loose protection Outdoor unit and indoor unit communication error (Applicable only when communication is established between the ComfortStar outdoor unit and the ComfortStar indoor unit via RS485) Indoor unit T1 temperature sensor fault (Applicable only when communication is established...
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Page 20: Troubleshooting
DC Inverter Split Outdoor Unit - Part4 2 Troubleshooting 2.1 Safety Precautions The following precautions here are quite important, so be sure to follow them carefully. Read these instructions carefully before installation. Keep this manual in a handy for future preference. Failure to adhere to all precautionary measures listed in this section may result in personal injury, damage to the unit or to property, or in extreme cases, death. - Page 21 DC Inverter Split Outdoor Unit - Part4 2.1.2 Information servicing(For flammable materials) Use this unit only on a dedicated circuit. Damage to the installation area could cause the unit to fall, potentially resulting in personal injury, property damage, or product failure. ...
- Page 22 DC Inverter Split Outdoor Unit - Part4 Use a firm stool or step ladder according to manufacturer procedures when cleaning or maintaining the unit. Do not install or operate the unit for an extended period of time in areas of high humidity or in an environment directly exposing it to sea wind or salt spray.
- Page 23 DC Inverter Split Outdoor Unit - Part4 2.2 ATL Troubleshooting ATL indicates ambient temperature out of bounds protection. The unit stops running and will not start operating until the ambient temperature returns to the allowable temperature range, error code is displayed on the communication board. The allowable ambient temperature range is 5~125℉(-15~52℃).
- Page 24 DC Inverter Split Outdoor Unit - Part4 2.3 E1/F0 Troubleshooting E1 indicates RS485 communication fault between outdoor unit and indoor unit(from indoor side). F0 indicates RS485 communication fault between outdoor unit and indoor unit(from outdoor side). The unit stops running and error code is displayed on the communication board ...
- Page 25 Measure sensor resistance. If the resistance is too low, the sensor has short-circuited. If the resistance is not consistent with the sensor’s resistance characteristics table, the sensor has failed. E2/E3 is applicable only when communication is established between the ComfortStar outdoor unit and the ComfortStar indoor unit via RS-485.
- Page 26 E8 indicates indoor fan motor current fault, E8 is applicable only when communication is established between the ComfortStar outdoor unit and the ComfortStar indoor unit via RS-485. The unit stops running and error code is displayed on the communication board ...
- Page 27 E8 indicates wired controller communication fault, E9 is applicable only when communication is established between the ComfortStar outdoor unit and the ComfortStar indoor unit via RS485. The unit stops running and error code is displayed on the communication board ...
- Page 28 DC Inverter Split Outdoor Unit - Part4 2.7 FA/FB Troubleshooting FA indicates EEPROM fault on the main PCB FB indicates EEPROM fault on the inverter module The unit stops running and error code is displayed on the communication board ...
- Page 29 DC Inverter Split Outdoor Unit - Part4 2.8 FD Troubleshooting FD indicates pressure sensor fault The unit stops running and error code is displayed on the communication board Ensure the pressure sensor is connected Pressure sensor connection is loose properly Pressure sensor is short-circuited or failed Replace the pressure switch.
- Page 30 DC Inverter Split Outdoor Unit - Part4 2.9 FF/P1/H2 Troubleshooting FF indicates high pressure switch fault for 20 minutes. P1 indicates high pressure switch fault for 4 seconds. H2 indicates FF protection appears 3 times in 150 minutes can't be recovered until re-power on. ...
- Page 31 DC Inverter Split Outdoor Unit - Part4 2.10 F9/L1/L2 Troubleshooting F9 indicates AC voltage is too high or too low protection L1 indicates DC bus low voltage protection L2 indicates DC bus high voltage protection Allowable voltage range of power source 178~265V Upper limit of DC generatrix voltage 430V...
- Page 32 DC Inverter Split Outdoor Unit - Part4 2.11 P2/H5 Troubleshooting P2 indicates low pressure protection in cooling mode. H5 indicates P2 protection appears 3 times in 240 minutes can't be recovered until re-power on. The unit stops running and error code is displayed on the communication board ...
- Page 33 DC Inverter Split Outdoor Unit - Part4 2.12 P3 Troubleshooting P3 indicates over current protection The unit stops running and error code is displayed on the communication board The refrigerant pressure is too high which caused by high pressure switch fault, poor Refer to FF/P1 troubleshooting heat exchange or blockage on the outdoor unit...
- Page 34 DC Inverter Split Outdoor Unit - Part4 2.12 P4/H6 Troubleshooting P4 indicates discharge temperature protection H6 indicates P4 protection appears 3 times in 100 minutes can't be recovered until re-power on. The unit stops running and error code is displayed on the communication board. ...
- Page 35 DC Inverter Split Outdoor Unit - Part4 2.13 P5 Troubleshooting P5 indicates T3 high temperature protection in cooling mode The unit stops running and error code is displayed on the communication board. Ensure that the outdoor unit has good Poor heat exchange caused by Poor ventilation and remove dust and other ventilation of the outdoor unit or blockage...
- Page 36 DC Inverter Split Outdoor Unit - Part4 2.14 P6 Troubleshooting P6 indicates compressor inverter module protection. The unit stops running and error code is displayed on the communication board. Situation1: P6 appears immediately when the outdoor unit is powered-on The control PCB is damaged Replace the control PCB Situation2: P6 appears immediately after the compressor starts up...
- Page 37 The unit stops running and error code is displayed on the communication board. P7/PC is applicable only when communication is established between the ComfortStar outdoor unit and the ComfortStar indoor unit via RS485. P7/PC Ensure that the indoor unit has good...
- Page 38 DC Inverter Split Outdoor Unit - Part4 2.15 P8 Troubleshooting P8 indicates IPM high temperature protection The unit stops running and error code is displayed on the communication board. Adjust the power supply and make sure the Power supply voltage is too high or too low. power supply is stable Poor ventilation at installation position or Install the outdoor unit in the place with...
- Page 39 DC Inverter Split Outdoor Unit - Part4 2.15 P9 Troubleshooting P9 indicates fan motor inverter module protection The unit stops running and error code is displayed on the communication board. Check if the outdoor fan is jammed and Outdoor fan is blocked ensure that the fan is operating normally.
- Page 40 DC Inverter Split Outdoor Unit - Part4 2.16 H0 Troubleshooting H0 indicates Inverter module and main PCB communication error The unit stops running and error code is displayed on the communication board. There is only one control PCB in the electric control box which integrates the functions of main control board and inverter module, maintenance personnel has to replace the PCB when H0 fault occurs.
- Page 41 DC Inverter Split Outdoor Unit - Part4 3. Temperature Sensor Resistance Characteristics Outdoor ambient temperature sensor(T4) and condenser coil temperature sensor(T3) resistance characteristics.
- Page 42 DC Inverter Split Outdoor Unit - Part4 Compressor exhaust temperature sensor (TP) resistance characteristics.
- Page 43 6020350A0001...
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