Operates At Max. Heating Only, Except W/Temperature At "Min".

Cause/remedy:
a) Interruption in in-car sensor or temperature sensor for heat exchanger or temperature selector or their feed lines.












Check temperature sensor (6 or 7), temperature selectors, and renew, if required or check their feed lines and connections for interruption and recondition, if required.







b) Electronic switching unit for temperature control (9) defective or its feed lines (sensor chain) defective.

Renew electronic switching unit (9) or recondition feed lines.