In-Car Temperature Fluctuates Irregularly Up and Down.

Cause/remedy:
a) Loose electric connection on in-car sensor, sensor for heat exchanger, temperature selectors, dual valve or on electronic switching unit for temperature control.

Check connections and re-bend, if required.







b) Electronic switching unit (9) for temperature control damaged.

Renew electronic switching unit.







c) Dual valve (8) temporarily sticking.

Renew dual valve.