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Potterton Netaheat Electronic Boiler?

My Potterton Netaheat Electronic Boiler won't fire up to heat the water unless the central heating is also on.

The central heating and water work fine when both are on but the boiler will not heat the hot water by itself.

Any ideas?

Thanks
Dan, July 2010
So your boiler is OK.OK, so is the pump, I'm guessing you have two motorised valves. and if so, it's probably the micro switch on the ot water valve that's faulty.

Alex, July 2010
link Click here to see other fixes for Potterton.