Hi have a 2 yr old Worcester Greenstar 30i Combi. HE is working ok but CH not working. Thermostat is ok + calling for heating (just changed the batteries), but CH won't come on via timer or manual switch either. Have the thermostat set at 30deg. I've tried reset of boiler + switching off via spur also. All TRV's are new + working fine also.
It has been coming on occasionally every day but then goes off itself for moat of the day. Only change recently was I refilled the boiler as pressure dropped a little since original installation Jan 2016.
Any ideas most appreciated?
It has been coming on occasionally every day but then goes off itself for moat of the day. Only change recently was I refilled the boiler as pressure dropped a little since original installation Jan 2016.
Any ideas most appreciated?