Control Assembly: Description and Operation

Front Climate Control Switches:

CONTROL SWITCH, REAR
Systems that have both front and rear control capabilities use both front and rear control assemblies. These systems provide the following settings for the blower motor (18527): OFF, REAR CONTROL, LOW, MED and HIGH. By setting the front heater blower motor switch (18578) to the REAR CONTROL position, the blower motor can be controlled by the heater blower motor switch in the rear control assembly.

FRONT CLIMATE CONTROL ASSEMBLY
The driver and front seat passenger have access to the front A/C control (19980) located in the instrument panel (04320). This is the main control and provides settings for temperature, function selector and main and auxiliary blower speed selection.
There are five combinations of front control assemblies available for Econoline vehicles with three having auxiliary heating and/or air conditioning controls:
1. Front Standard Heater Only.
2. Front A/C-Heater Only.
3. Front Heater w/Aux Heat.
4. Front A/C w/Aux A/C & Heat W/O Rear Control.
5. Front A/C w/Aux A/C & Heat W/Rear Fan Control.