37MGRA PH 90 (High temperature protection of evaporator diagnosis and solution)

Diagnostic codes covered

PH 90

Description: When evaporator coil temperature is more than 60°C in heating mode, the unit stops. It starts again only when the evaporator coil temperature is less than 52°C. Recommended parts to prepare: Connection wires, Evaporator coil temperature sensor (T2), Indoor fan, Indoor main PCB