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Hi I have a potterton suprima boiler, when the thermostat in the hall swiches the heating on the light comes on on the 3 point valve and the motorised arm indicates the valve has moved and the heating comes on as it should but when the house is at desired temp the thermostat switches off...

I have just had an extension built and need to move the bathroom currently there are hot/cold 22mm pipes serving the bath and 15mm from the 22mm for the sink and toilet Would it be ok to join 15mm to the existing main 22mm pipes and the branch off for the bath sink and toilet feed i know 15mm...

Hi I have removed one radiator form a bathroom upstairs and used the feed and flow from it to add 2 new rads in an extension, when i turned the system back and bled air from every rad every thing is ok apart from one radiator down stairs that is now not working (completely cold) the pump was...