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Mend Ferroli Optimax HE 31C Heating Radiators Heat Hot Water

Ferroli Optimax HE 31C not heating radiators?

Ferroli Optimax HE31C won't heat the radiators. Hot water function is working fine. There are no error messages, the heating temperature increases quickly then switches to d2.

SittingChilly
September 2010

Ferroli Ferroli Optimax HE 31C Heating, Home Heating Systems Heating Radiators Heat Hot Water

diverter valve sticking

phil southall
October 2010

ferroli optimax he 38 c.
how do i set hot water

michelle
October 2010

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Ferroli Optimax HE 31C Not Heating - Fix