McQuay All models error codes
Codes
- HP2-1Error codeHigh pressure switch for circuit 2
- HP2-2Error codeHigh pressure switch for circuit 2
- J1Error codePressure Sensor Malfunction
- J3Error codeCompressor Discharge Pipe Thermistor Fault
- J5Error codeSuction Pipe Thermistor Fault
- J6Error codeOutdoor Heat Exchanger Thermistor Fault
- J7Error codeSubcooling Heat Exchanger Thermistor Fault
- J8Error codeLiquid Pipe Thermistor Fault
- J9Error codeGas Pipe Thermistor Fault
- JP2Error codeFan operation only applies to network controls
- JP5Error codeSet point adjustment range only applies to network controls with a room temperature sensor
- JP6Error codeShorted for room temperature sensor control, MicroTech III only
- L1Error codeLow pressure too low
- L2Error codeSensor broken, low pressure
- L3Error codeElectrical Box Temperature Rise
- L4Error codeInverter Heatsink Overheating
- L9Error codeStall Prevention Error
- LCError codeTransmission Error (Inverter to Control PCB)
- M1Error code2 Pipes without Aux. Heater
- M2Error code2 Pipes with Aux. Heater
- M3Error code4 Pipes + Boiler
- M4Error code4 Pipes + Boiler
- P1Error code
- P4Error codeHeatsink Thermistor Fault
- PJError codeCapacity Setting Error
- U2Error codeDC Voltage Out of Range / Drop
- U4Error codeIndoor/Outdoor Communication Error
- U7Error codeOutdoor PCB Signal Transmission Issue