Question about Watts 3/4 Pressure Relief Valve

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Boiler keeps losing pressure when the heatings off

I have a gloworm copact combi boiler which keeps losing pressure once my heatings turned off, it seems to be fine when the heating is on. also all the hot water seems to be working fine downstairs but not in the bathroom upstairs is this problem related to the pressure problem?

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  • Anonymous Jan 20, 2009

    gloworm compact keep losing pressure when heatings turned off

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Hi Leehardcast,

Yes the problems are related. The system is low on water. So now instead of water you have air in radiators which is easily compressed when it heats up. Then pressure loss when it cools down.

Add some water to your system until you have 15lb pressure and bleed out upstairs radiators at the same time.

Please rate this response and Good luck, Phil

Posted on Jan 14, 2009

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