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Why does my central heating go on and off without any time settings?
Valliant boiler making noises?
Valliant VCW GB 242EH Boiler trips out?
Increase pressure in Valliant Ecomax Boiler?
my central heating comes on when the programmer is set to off?
Valliant Gas (Butane) Water Heater won't fire up (yes- pilot on) ?
valiant boiler?
no flames for hot water?
Vallient boiler showing f28 but pressure is fine?
is it safe?
Valliant Eco Tech 615 boiler ?
flashing f22 message?