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We have 57 questions about mending 'optimax water hot' in category Heating, Home Heating Systems which have been answered
how can i fix boiler?
how do i depressurise a ferrolli optima boiler?
how can i fix my ferolli optima 701?
OPTIMA 701 Ferrori heating problem?
high pressure when heatings on?
Trianco Optima Boiler Programmer Fault (QA73)?
optima 701 pressure rises when heatings on drops when off?
Optima failing to fire up?
Big bang on ignition?