Symptoms of valve damage of BMW heater

Symptoms of BMW heater valve failure There are basically three symptoms of BMW heater valve failure. 1. If it can't be turned off (air leakage), turn down the temperature, and the air outlet still emits hot air. 2. If it can't be opened, raise the temperature, and there is no hot air blowing out of the air outlet. 3. The adjustment is invalid. The phenomenon is that the automatic air conditioner cannot keep the temperature constant. If the heater valve is broken, the user can directly remove the heater valve and let the water flow directly to the heater water tank, or replace it with a new heater valve. The warm air device uses the heat taken away from the engine by the engine coolant to defrost the cab glass in winter, heat the driver and improve the driver's working conditions. The inlet valve on the outlet pipe of the engine cylinder head is opened (turn the valve handle to the vertical position), and the cooling water in the engine enters the warm air radiator from the cylinder head through the inlet pipe, and then enters the water pump for circulation through the outlet pipe. @20 19