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Troubleshooting Assisitant Index

Diagnosis Solutions are not a replacement for a qualified technician

Solutions are not in any particular order
Contactor

Problem		Solutions to assist with repair
Heater contactor won't engage but heater light is on		not wired correctly Low voltage Bad coil

Heater contactor won't engage and heater light is off		Check pressure switch Check thermostat Replace contactor

System contactor won't engage but ready light is on (mostly on DX type)		Pressure related problem Bad contactor or low voltage Short in spaside

System contactor won't engage and ready is is off (mostly on DX type)		Low votage or bad contactor Door not closed allowing interlock switch to engage Blown fuse

Contactor chattering		Water in spaside Bad coil Low voltage at contactor Wrong contactor installed (undersized)

Contactor has no power		Contactor is bad System High limit Door interlock not engaged

Contactor