potterton promax he plus stuck on!!!

bradfordboy · 5 Jan 2009

I have a potterton promax he plus controlled by a myson mep2. Been working brilliantly in a new Barrets house, however the boiler won't switch off now. The myson seems to be working fine and will switch it on and advance to the next program and switches off, however the boiler just keeps burning away, and the only way to stop it is to reset it. It stays off then until the next timer setting!! Any ideas!!
Thanks

diynot

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potterton promax he plus stuck on!!!

bradfordboy

DIYnot Local

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