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