Auxiliary Heating Operation -1

When an auxiliary warm air request is made the auxiliary HVAC control processor will send a high voltage signal to the auxiliary air temperature actuator on the auxiliary air temperature door position signal circuit. This voltage signal is a varied 12 volt signal. This signal is monitored by the logic incorporated in the actuator and it will move the actuator in the desired direction when a position change is requested. The signal from the auxiliary HVAC control assemblies to the auxiliary HVAC control processor is a varied 12 volt signal. This signal, when warm air is requested, is a high voltage signal.