centurion
Well-Known Member
Re: E60 A/C problem. It is common fault?
air come out hot for few minutes then cold.
Aircon is never pure cold. There is a place where there is a heat exchanger when engine coolant is piped into it (for heater purpose) to mix the hot air with the cold air production place where air con coolant cools the air.
Engine coolant flow to Heat exchanger is controlled by a heater valve. If the heater valve is stuck, or the acutator is faulty, or the sensor for the acutator is faulty.
Either way I cannot think of anything else except the VALVE issue.
air come out hot for few minutes then cold.
Aircon is never pure cold. There is a place where there is a heat exchanger when engine coolant is piped into it (for heater purpose) to mix the hot air with the cold air production place where air con coolant cools the air.
Engine coolant flow to Heat exchanger is controlled by a heater valve. If the heater valve is stuck, or the acutator is faulty, or the sensor for the acutator is faulty.
Either way I cannot think of anything else except the VALVE issue.