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We have 14 questions about mending 'optimax c combi' in category Heating, Home Heating Systems which have been answered
how can i fix my ferolli optima 701?
optima 701 pressure rises when heatings on drops when off?
Trianco Optima Boiler Programmer Fault (QA73)?
high pressure when heatings on?
OPTIMA 701 Ferrori heating problem?
Big bang on ignition?
how can i fix boiler?
how do i depressurise a ferrolli optima boiler?
Optima failing to fire up?