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COMBI BOILER PRESSURE PROBLEM

When i turn the heating on the pressure just keeps rising until the pressure release valve blows and the boiler turns off

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  • franklynnash Jan 09, 2009

    pressure indicator very low and low level red light on.

    increased the water pressure to near maximun as read on indicator low leve light remained on and unable get the combi potterton boiler to work.

    there is an expansion valve attched which was added two years ago by the combi specialist.



    i am going to try to bleed the radiators any suggestion will be appreciated.

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  • 18 Answers

It sounds like the expansion tank is unable to cope with the expansion of the water in the system. It may have failed or there may be a blockage so water is unable to get to it.

Posted on Jan 04, 2009

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