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We have 285 questions about mending '3 way valves' in category Heating, Home Heating Systems which have been answered
Fan tries to run every 15 seconds then stops immediately?
Worcester Bosch 532/i Combi Boiler?
Boiler cycle?
Remove boiler cover?
Vaillant F22 fault?
Siemens RDJ10RF thermostat problem?
How do I work my Storad storage heater?
Vaillant ecotec 831 plus?
Worcester boiler dripping water?