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We have 33 questions about mending 'combi high problem' in category Heating, Home Heating Systems which have been answered
Fan tries to run every 15 seconds then stops immediately?
Remove boiler cover?
Boiler cycle?
Siemens RDJ10RF thermostat problem?
Worcester Bosch 532/i Combi Boiler?
Worcester boiler dripping water?
Vaillant ecotec 831 plus?
Vaillant F22 fault?
How do I work my Storad storage heater?