McQuay All models error codes
Codes
- ER48Error codeDigital Compressor Overload
- ER49Error codeFix 1 Compressor Overload
- ER50Error codeFix 2 Compressor Overload
- ER51Error codeFix 3 Compressor Overload
- ER52Error codeDischarge pressure too high
- ER53Error codeSuction pressure is too low
- ER54Error codeOutdoor unit’s IC error
- ER56Error codeDischarge temperature is too high
- ER58Error code4 way valve failure
- ER59Error codeAmbient temperature is beyond the limit
- ER64Error codeTH1 temperature sensor failure
- ER65Error codeTH2 temperature sensor failure
- ER66Error codeTH3 temperature sensor failure
- ER67Error codeTH4 temperature sensor failure
- ER68Error codeTH5 temperature sensor failure
- ER69Error codeTH6 temperature sensor failure
- ER70Error codeTH7 temperature sensor failure
- ER71Error codeTH8 temperature sensor failure
- ER72Error codeTH9 temperature sensor failure
- ER73Error codeTH10 temperature sensor failure
- ER74Error codeTH11 temperature sensor failure
- ER75Error codeTH12 temperature sensor failure
- ER76Error codeDischarge pressure sensor failure
- ER77Error codeSuction pressure sensor failure
- ER78Error codeAll indoor units Communication Failure
- F0Error codeOutdoor Storage Malfunction
- F1Error codeSensor Broken (indoor inlet coil)
- F2Error codeSensor Broken (indoor mid coil)
- F3Error codeDischarge Pipe Overheating
- F4Error codeSensor Broken (indoor return air)
- F5Error codeSensor Broken (indoor supply air)
- F6Error codeOutdoor Heat Exchanger Overheating
- F9Error codeRefrigerant leakage
- H0Error codeCompressor Sensor System Abnormality
- H1Error codeFixed Comp1 overload
- H2Error codeFixed Comp2 overload
- H3Error codeHigh Pressure Switch Defect
- H4Error codeHigh pressure too high
- H5Error codeSensor broken, high pressure
- H6Error codePosition Sensor Abnormality
- H6-2Error codeLow Temp 1 Sensor Common
- H6-3Error codeLow Temp 1 Sensor Signal
- H6-4Error codeLow Pressure Switch 1 Source Voltage
- H6-5Error codeLow Pressure Switch 1 Signal
- H6-6Error codeReversing Valve 1 Common
- H6-7Error codeReversing Valve 1 Output
- H8Error codeAC Current (CT) Sensor Issue
- H8-2Error codeIsolation Valve/Pump Request Relay N/C
- H9Error codeOutdoor Air Thermistor Fault
- H9-2Error codeReturn Air Temperature Common