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OPTIMA 701 Ferrori heating problem?
Optima failing to fire up?
Pilot light will not ignite?
how can i fix boiler?
how can i fix my ferolli optima 701?
Why does the Hawk II Optima keep turning on central heating without request?
optima 701 pressure rises when heatings on drops when off?
Big bang on ignition?
Why do my TRV's rattle?
how do i depressurise a ferrolli optima boiler?
high pressure when heatings on?
Trianco Optima Boiler Programmer Fault (QA73)?
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