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We have 34 questions about mending 'optimax 31c boiler' in category Heating, Home Heating Systems which have been answered
Big bang on ignition?
high pressure when heatings on?
Trianco Optima Boiler Programmer Fault (QA73)?
how can i fix boiler?
Optima failing to fire up?
optima 701 pressure rises when heatings on drops when off?
how can i fix my ferolli optima 701?
how do i depressurise a ferrolli optima boiler?
OPTIMA 701 Ferrori heating problem?