We have a Ferrolli 77f combi boiler, that is ok with the domestic hot water , but the central heating doesnt work correctly. I have checked the wire at the room thermostat and there is no live feed going to it. The wiring seems to be ok, so the fault seems to be some thing in the boiler itself. The other thing is the central heating seems to work for a few seconds after the hot water tap has been run ?
Any advise would be much appreciatted.
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