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home Fix label Heating label_important Home Heating Systems category Heatslave

Heatslave pump keeps running when not selected?

My heatslave pump keeps running when hot and heating is not selected. Changed PCB but problem is still there....any clues? Linked out programmer.
Norman Burgess., August 2008
home Fix label Heating label_important Home Heating Systems category Heatslavedone
maybe a faulty thermister, boiler thinks its too hot and is running the pump (know as pump overrun) to dissipate the excess heat......

T, August 2008
link Click here to see other fixes for Heatslave.

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