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We have 27 questions about mending 'boiler optimax code' in category Heating, Home Heating Systems which have been answered
OPTIMA 701 Ferrori heating problem?
high pressure when heatings on?
Trianco Optima Boiler Programmer Fault (QA73)?
how can i fix boiler?
how can i fix my ferolli optima 701?
how do i depressurise a ferrolli optima boiler?
optima 701 pressure rises when heatings on drops when off?
Big bang on ignition?
Optima failing to fire up?