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Mend Baxi 105e Pressure Heating Demand

baxi 105e combi boiler pump over run always on?

the pump will always run on a demend condition even though the heating or hot water is still off.I was wondering if it could be the water pressure differential pressure switch.Or a latched relay on the main driver board?

Richard taylor
February 2008

Baxi Baxi 105e Heating, Home Heating Systems Pressure Heating Demand

Worcester 240 boilers have a pump overrun stat that keeps the pump running until, with no demand, the hot water temps falls below 60'C. Your Baxi may have something similar and the pump overrun stat may be faulty. If you have the manual for the Baxi it may have a diagnostics section.

Fitzy
August 2008

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Baxi 105e Pump Overrun - Common Issue?