With Temperature Dial Engaged In "Min"

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

Cause/Remedy:
a) Fuse blown.
Renew fuse. Eliminate short, if required.






b) Connections on monovalve (11) loose. Rebend sleeve of 2-point coupling on monovalve.
c) Monovalve (11) defective. Renew monovalve.
d) Supply line from fusebox to monovalve or from monovalve to control unit interrupted.

(2-point coupling from monovalve should be connected to voltage) Repair, if required.






e) Control unit (4) or temperature dial (3) defective.
Check control unit or temperature dial and renew, if required.