While you wait for answers, we may have found some information which could help you.
Success
Message
optima 701 pressure rises when heatings on drops when off?
high pressure when heatings on?
Trianco Optima Boiler Programmer Fault (QA73)?
Why do my TRV's rattle?
OPTIMA 701 Ferrori heating problem?
Big bang on ignition?
Optima failing to fire up?
how can i fix boiler?
Pilot light will not ignite?
Why does the Hawk II Optima keep turning on central heating without request?
how can i fix my ferolli optima 701?
how do i depressurise a ferrolli optima boiler?
howtomendit.com for free repair help, information and advice.
