Except With Temperature Dial Engaged In "Min"

COMPLAINT:
System operates at max. heating capacity only, except with temperature dial engaged in "MIN".






Cause/Remedy:
a) Interruption in in-car sensor (7) or temperature sensor for heat exchanger (6) or temperature dial or their supply lines.






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






b) Electronic switching unit for temperature control (9) defective, or their supply lines (sensor chain).

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

c) Control unit defective. Renew control unit.