Heater, Disassembling And Assembling

The heater construction is largely the same as the construction of the heater and A/C unit on a manual climate control system. The installed evaporator only has the function of a placeholder for the heater. Depending on the heater version, there may be no evaporator installed. In this case, there is a honeycomb installed.

Depending on the heater version, there is either a foam piece installed instead of an expansion valve, or an expansion valve is installed, on which the open connections are sealed off with a closure cap.

The condensation water drain does not have a function due to the missing A/C system. Even though the condensation water drain does not have a function, it still must be installed properly. If it is not installed correctly, moisture can get into the vehicle interior or there may be noises when operating the heater.

Depending on the vehicle version, there may be no condensation water drain installed. In this case, the connection on the heater is sealed off with a plug.