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