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We have 115 questions about mending 'wont switch off' in category Heating, Home Heating Systems which have been answered
Vaillant F22 fault?
Boiler cycle?
Worcester boiler dripping water?
Siemens RDJ10RF thermostat problem?
How do I work my Storad storage heater?
Fan tries to run every 15 seconds then stops immediately?
Worcester Bosch 532/i Combi Boiler?
Remove boiler cover?
Vaillant ecotec 831 plus?