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Ok Thanks i'll check out at the 3 way motorised valve end. I did have a problem with this valve and replaced the head 6 months ago, with a new one. Yes i'm fine with electricity... If I turn both the HW and the CH off at the controller, then the boiler won't fire, so am I right to doubt the...

I do use hot water, but i mean the boiler is coming on and off far too much when hot water has not been used (so should just be keeping the tank content at temp). Turning the boiler off and then on before i want to use hot water is not a sensible idea, as it would take ages to warm the tank.

anyone? must be costing me a fortune in gas!

Hi, I've a potterton suprima boiler. It keep lighting up and running for 30 between 5 - 30 seconds. Far more often then it usually does. I've turned my heating circuit off and also turned down the hot water tank to 60C, but the problem is still there. It's the water that it's trying to...

OK thanks very much all. Kev

anyone please?

Ah yes that makes sense. It'll be the pump. Should I keep it on middle position, is there any benifit of slowing or speeding up ? Thanks. Kev

While diagnosing my faulty potterton 3 port valve on my heating system I discovered what seems to be a electrically switch (by hand) 3 position flow restrictor. It's on the line from the boiler and feeds the potterton 3 port valve. Can you please tell me the function of this valve, it's...

Hi, My heating is failing to go off at times. I've tested the thermostat and controller and come to the conclution it's my 3 port valve. But since I've disturbed it, it now seems fine. Will it be the acctuator at fault or do you think it will be that the valve was not seated correctly? I've...