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We have 1965 questions about mending 'will not switch off' in category Heating, Home Heating Systems which have been answered
Vaillant F22 fault?
Remove boiler cover?
Boiler cycle?
Worcester boiler dripping water?
Siemens RDJ10RF thermostat problem?
Vaillant ecotec 831 plus?
Fan tries to run every 15 seconds then stops immediately?
How do I work my Storad storage heater?
Worcester Bosch 532/i Combi Boiler?