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princeknight
got an unvented cylinder, not heating up water, just very tepid. two port valve working okay. connected to vailant system boiler which is always losing pressure, and when using filling loop does not fill over 1.2bar???? mains water pressure ok so dont understand y this is.
supect that thermostat needs replacing but would like verification by you guys if anything else needs to be checked before hand just incase this is not the correct diagnosis.
thanks
supect that thermostat needs replacing but would like verification by you guys if anything else needs to be checked before hand just incase this is not the correct diagnosis.
thanks