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We have 147 questions about mending 'optima' in category Heating, Home Heating Systems
Oil fired boiler thermostat?
One radiator in a bedroom is always cold?
Firebird super Q 50/82?
Vaillant F22 fault?
F40 fault?
Greenstar Highflow 440?
Remove cover off gas boiler?
How do i stop the time from flashing on the Siemens RDJ100RF?
Advice?
Vaillant ecotec 831 plus?
Worcester boiler dripping water?
Worcester 30 Cadillac combi boiler won’t fire up and the EA?
Greenstar 24Ri boiler, fast flashing - can I reset?
Greenstar 25 combo boiler?
How can i mend my baxi combi 105a?
Ideal Isar H30?
How to fix my fireplace?
How do I work my Storad storage heater?
Worcester Bosch 532/i Combi Boiler?
BMU error code?
British Gas 532/i Gas Combi Boiler?
Have I got got a faulty programmer?
Boiler cycle?
Thorn Harcal 460?
Morco gb 24?
Reset my worcester dt10rf programmer?
Britony Combi Se boiler 40 & 80 lights flashing?
Remove boiler cover?
Siemens RDJ10RF thermostat problem?
Fan tries to run every 15 seconds then stops immediately?