How to solve Glowworm 35ci pressure loss(13 months old)?

Very simple solution - solved it myself by gently bending the pipe leading to the expansion bottle. A build up of silt blocked the expansion bottle.

Barry Abel
November 2007

sounds like your expansion tank is bust (it happened to mine also after 23 months). You can fit an external one and forget about the awkward one at the back of the boiler to cure it (this is shown as optional in the manual). Cost will be in the region of £125 to get it done professionally.

Marty
September 2007

have you checked all radiator pipes, not leaking under floor boards. or check your expanssion vessel may need charging up with pressure or bladder split inside, but rare for 13 months old.

hi-spec plumbing
December 2006