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We have 374 questions about mending 'heat exchanger gone' in category Heating, Home Heating Systems which have been answered
Fan tries to run every 15 seconds then stops immediately?
Vaillant F22 fault?
Worcester boiler dripping water?
Vaillant ecotec 831 plus?
Siemens RDJ10RF thermostat problem?
Boiler cycle?
Worcester Bosch 532/i Combi Boiler?
How do I work my Storad storage heater?
Remove boiler cover?