Glow-worm 30CXI over pressure

6 Jan 2010
Reaction score
United Kingdom
Hi All
I am hoping someone can help me out.
Ive increased the pressure too much on my glowworm 30CXI boiler.
Its running at 3.1 bar even on standby (flashing on the display) and should be 1.0 Bar during normal operation.
Does anyone know how I can reduce this pressure?
Any help would be much appreciated!

many thanks
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It worked, thanks so much.
Would have also fixed that lukewarm radiator i drained I guess!

Thanks again

Another way to reduce the pressure is to take off the front cover of the boiler, two screws at the bottom and lift off, is to use the Pressure Release Valve (PRV) it is a red handled valve on LHS, press down briefly and watch the pressure drop on the display.
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don't use prv to drain system , probably cause more problems. just do it as burnerman said.

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