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Ferroli Optimax HE31c a26 problem?
Hi how to increase the water pressure on ferroli optimax 25C?
ferroli plus 31c has a code b2 any ideas?
I have a Ferroli FF 77 the pilot light has gone out will not stay on ?
Ferroli domicondens he26 C fires up but doesn't appear to rectify ?
Replace a diverter valve?
F40 fault?
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How can i repair a noCN fault on my boiler?
i have a ferroli combi boiler i have 1/2 the radiators working and 1/2 not ?