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continuosly running pump?

Hi
I was having trouble getting my potterton 28i to fire up and it turned out to be a hole in the dhw sensor diaphram every thing worked fine for a couple of hours but now the pump runs contiuously. Can anyone help
cheers
mark, May 2009
Are you sure you have fitted the diaphragm properly, sounds like the pin on the front of the diaphragm housing may be stuck out and making the Micro switch on the front cover.(you will be able to see if this is happening quite easily)

www.elanar.co.uk, May 2009
link Click here to see other fixes for Potterton.