MCQUAY Air Conditioner Fault Code
Fault display: (only applies to SLM APM01C controller) failure code fault E0 E1 controller system fault an external fault input (current overload of the compressor) E2 External fault input (low voltage protection compressor system) E3 External fault input (compressor and high pressure protection) return air temperature sensor in E4 E5 indoor coil sensor missing or …