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Mend Boiler Heating Temperature

heating comes on without being called for?

HEATING COMES ON WITHOUT REQUEST ON ITS OWN ACCORD EVEN WHEN CONTROL IS IN HOT WATER MODE ONLY,HEATING UNTIL BOILER LOCKS OUT

JOHN
August 2008

Heating, Home Heating Systems Boiler Heating Temperature

I had the same problem with my biasi boiler called an engineer he quoted me £300 at the end I maange to diagnose the problem myself and got it working for £20. Common problem with this is that the CH pressure switch is buggered. Does you boiler has a small water leak, this will inside the boilder.

raj
October 2008

diverter valve problem

bosun
August 2008

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Boiler Coming On Itself? - Causes & Fixes