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flashing f22 message?
No hot water [Valliant boiler, Turbomax VUW 242]?
Vallient boiler showing f28 but pressure is fine?
Valliant Boiler F22 Error?
Vallliant F75 error message?
Valliant Turbo Max Non Condensing RS boiler?
eco digital 831 manual request?
VCW GB 242 EH Valliant Boiler?
Valliant Boiler?
Boiler-Valliant Ecotec Plus-won't power up, display off?
Valliant Eco Tech 615 boiler ?
another with a Valliant showing F22 and 0.4 bar fault?