ComfortStar Split System AC Error Codes And Troubleshooting

ComfortStar AC Error Codes and Identification Codes. When codes appear on your Indoor ComfortStar ductless mini-split AC digital display, this tells you a certain option is turned ON or a problem has occured with the AC system. The error code or ident code that displays is letting you know the problem or what is occurring within your AC. Here are all the codes and what they mean. Below is also info for troubleshooting, maintenance, and cleaning the filter on a ComfortStar AC Split System.

ComfortStar Split System AC Codes And TroubleshootingComfortStar Split System AC Codes And Troubleshooting

By knowing the meaning of the identification code or error code (if an error code does appear) you will know what action needs to be taken to fix your AC (if something is not working properly). You can then troubleshoot the issue and repair your air conditioner. Whether it be a certain operation that is taking place within the AC, the AC changes modes, troubleshooting is needed, normal maintenance is required, or parts that require repair.

ComfortStar AC Error Codes (Indoor Unit – Identification Codes)

ComfortStar AC Error Codes “E0”, “E1”, “E2”, “F1”, “F2”, “F3”, “P1”, “P2”, “P3” appear:
-The unit may stop operation or continue to run safely.
-If the indicator lamp continues to flash or error codes appear, wait for about 10 minutes.
-The problem may resolve itself.
-If not, remove the unit from power and connect it again.
-Turn the unit on.
-If the problem persists, disconnect the power, contact your nearest customer service center 1-866-524-9898 or see the error code meanings below to troubleshoot the issue yourself.

ComfortStar AC Error Code = E0 Indoor unit EEPROM error.

ComfortStar AC Error Code = E1 Communication malfunction between indoor and outdoor units.

ComfortStar AC Error Code = E3 Indoor fan speed has been out of control.

ComfortStar AC Error Code = E4 Indoor room temperature sensor T1 open circuit or short circuit.

ComfortStar AC Error Code = E5 Evaporator coil temperature sensor T2 open circuit or short circuit.

ComfortStar AC Error Code = EC Refrigerant leakage detection.

ComfortStar AC Error Code = EE Water-level alarm malfunction.

ComfortStar AC Error Code = F1 Open circuit or short circuit of outdoor ambient temperature sensor T4.

ComfortStar AC Error Code = F2 Open circuit or short circuit of condenser coil temperature sensor T3.

ComfortStar AC Error Code = F3 Open circuit or short circuit of Compressor discharge temperature sensor T5.

ComfortStar AC Error Code = F4 Outdoor unit EEPROM error.

ComfortStar AC Error Code = F5 Outdoor fan speed has been out of control.

ComfortStar AC Error Code = F6 Outdoor unit low side value temperature sensor (T2B) open circuit or short circuit. (T2B means indoor unit coil outlet temperature sensor located on the outdoor unit low side value).

ComfortStar AC Error Code = F7 Lifting-panel communication error.

ComfortStar AC Error Code = F8 Lifting-panel malfunction.

ComfortStar AC Error Code = F9 Lifting-panel is not closed.

ComfortStar AC Error Code = P0 IPM malfunction.

ComfortStar AC Error Code = P1 Over voltage or over low voltage protection.

ComfortStar AC Error Code = P2 High temperature protection of compressor top. High pressure protection. Low pressure protection.

ComfortStar AC Error Code = P3 Outdoor low temperature protection.

ComfortStar AC Error Code = P4 Inverter compressor drive error.

ComfortStar AC Error Code = P5 Mode conflict.

ComfortStar AC Error Code = P7 Outdoor IGBT temperature sensor error.

ComfortStar AC Error Code = HC Check indoor unit board.

ComfortStar AC Code = “dF” when defrosting.

ComfortStar AC Code = “SC” when unit is self-cleaning.

ComfortStar AC Code = “FP” when freeze protection is turned on.

ComfortStar AC Code = “ON” for 3 seconds when:
-TIMER ON is set.
-FRESH, SWING, TURBO, or SILENCE features are turned on.

ComfortStar AC Code = “OF” for 3 seconds when:
-TIMER OFF is set.
-FRESH, SWING, TURBO, or SILENCE features are turned off.

ComfortStar AC Code = “cF” when anti-cold air feature is turned on.

ComfortStar AC Error Codes Chart - Indoor UnitComfortStar AC Error Codes Chart – Indoor Unit

Normally your ComfortStar AC Unit will display:
The AC unit will display the room temperature in Fan mode.
The AC unit will display your temperature setting in other modes.

ComfortStar Split System AC - Troubleshooting 1ComfortStar Split System AC - Troubleshooting 2ComfortStar Split System AC - Troubleshooting 3ComfortStar Split System AC - Troubleshooting 4ComfortStar Split System AC - Troubleshooting 5ComfortStar Split System AC - Troubleshooting 6Troubleshooting problems and issues with your ComfortStar AC

 

 

 

ComfortStar Split System AC - Maintenance 1ComfortStar Split System AC - Maintenance 2Periodic maintenance on your ComfortStar AC

 

 

ComfortStar Split System AC - How To Clean Air Filter 1ComfortStar Split System AC - How To Clean Air Filter 2ComfortStar Split System AC - How To Clean Air Filter IllustrationReplacing/Cleaning the Air Filter in your ComfortStar AC

 

 

ComfortStar Split System AC - Can operate without remoteComfortStar Split System AC - How To operate without remoteUsing your ComfortStar AC Without the Remote Control

 

DO the following to optimize the performance of your ComfortStar AC unit:
– Make sure not to block the air inlets or the outlets of the AC.
– Regularly check and clean the air filters.
– Keep your doors and windows closed.
– Limit the energy usage by using the TIMER ON and TIMER OFF function.

ComfortStar PDF ManualComfortStar Split System AC Error Codes And Troubleshooting PDF Manual

ComfortStar Multi Outdoor Unit PDF Service Manual – Multi Zone (CONDENSING UNITS)
(ComfortStar Model Numbers CM2-18-2Z, CM3-27-3Z, CM4-48-4Z, and CM5-54-5Z)

 

ComfortStar Alegria Gold SeriesThe above codes and troubleshooting are for the ComfortStar ALEGRIA GOLD SERIES DUCTLESS MINI-SPLITS (Indoor Unit)
Indoor Unit Model CPG009CA, CPG012CA, CPG009CD, CPG012CD, CPG018CD, CPG024CD, CPG030CD, CPG036CD.

The above codes and troubleshooting are for the ComfortStar ALEGRIA GOLD SERIES DUCTLESS MINI-SPLITS (Outdoor Unit)
Outdoor Unit Model CPG009CA, CPG012CA, CPG009CD, CPG012CD, CPG018CD, CPG024CD, CPG030CD, CPG036CD.

 

ComfortStar Alegria Platinum SeriesThe above codes and troubleshooting are for the ComfortStar ALEGRIA PLATINUM SERIES DUCTLESS MINI-SPLITS (Indoor Unit)
Indoor Unit Model CPP009CA, CPP012CA, CPP009CD, CPP012CD, CPP018CD, CPP024CD.

The above codes and troubleshooting are for the ComfortStar ALEGRIA PLATINUM SERIES DUCTLESS MINI-SPLITS (Outdoor Unit)
Outdoor Unit Model CPP009CA, CPP012CA, CPP009CD, CPP012CD, CPP018CD, CPP024CD.

 

The above codes are for the ComfortStar Ducted CPA-09, CPA-12, CPA-18, CPA-24.

The above codes are for the ComfortStar Floor ceiling FPA-18, FPA-24.

The above codes are for the ComfortStar Cassette TPA-09, TPA-12, TPA-18, TPA-24.

The above codes are for the ComfortStar Wall Mounted CPP009CD, CPP012CD, CPP018CD, CPP024CD.

 

Have a warranty or error code question…
Call ComfortStar Air Conditioning and Heating Customer Service:
1-866-524-9898
Mon – Fri 8:00am – 6:00pm EST

ComfortStar AC and Heating Warranty Issues

Need help with your ComfortStar AC displaying error codes or troubleshooting an issue? Please leave a comment below and we will be happy to assist.

7 thoughts on “ComfortStar Split System AC Error Codes And Troubleshooting”

  1. Comfort star un sure of the model number inside units throwing p1 p0 codes outside unit is throwing a p6 code.. neither inside units that are connected to the outside unit are working both showing same codes.. am thinking it’s a power connection issue or freon issue but not sure please help if possible.

  2. Have a comfort star plus condenser model no. CMO28B-3, 27000 btu cooling/ 28000 btu heating capacity, voltage / phase 208/230V/1 ( the system is a 3-unit, 9+12+18).
    The inside unit was giving me an error E6
    Plumber AC expert checked and confirmed the solenoid (Electronic Expansion Valve of the condenser) was not working.
    After an extensive search got a hold of Comfort Star and gave me a part number 43000109R (for round top) or 43000109F (for flat top)
    We can’t find that part anywhere!!

    Can anyone help?

  3. I have Comfort Star AC model number CHHO18CD A/DO
    The red light is on in the inside unit when the green light is on and it is blowing hot air.
    Is there a reset button?
    The breaker blew one day and is there a fuse somewhere?
    I have called customer service at the number you listed and they kept telling me I had to be a service person to talk to Tech.
    I just want to know what the red button means it is giving me NO error codes.
    Why can’t I get a simple answer as a consumer who bought your product.

  4. Hi Trevor, did you ever find the solution to your df problem? Mine seems to be doing the same thing, every 45 minutes or so, only with the heat on which I found kind of strange, I thought that the defrost had something to do with the A.C. Thanks Mario

  5. Would like to know the age of a ductless Comfortstar unit GH-12000H I cloud not find a serial number anywhere, I did find this number at the bottom CSW6000823.

  6. We have a COMFORTSTAR PLUS unit (MODEL: CHH012CD-13) installed new Jan 2007.

    Until just recently ( June 15, 2018 ) it was working just fine.

    Lately, the OUTSIDE unit works fine, but the INSIDE unit runs for about 15 minutes and shuts down.

    We can hear the cold air trying to come thru the INSIDE unit and we can feel COLD air dribbling out of the INSIDE unit, but the blower won’t keep going.

    Is there any way to fix this? Could it be a clogged drain from the INSIDE unit?

    Could it be a THERMISTOR problem?

    How can I go about getting this unit fixed without having to replace the entire mini-split system.

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