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We have 147 questions about mending 'optima' in category Heating, Home Heating Systems
high pressure when heatings on?
Optima failing to fire up?
Optima boiler?
Why does the Hawk II Optima keep turning on central heating without request?
Optima 701 Diverter Valve?
boiler turns off and on?
optima 701 pressure rises when heatings on drops when off?
No Hot Water OPTIMA 701 gas combi boiler?
Optima 701 Diverter?