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glowworm/combiboiler/swiftflow?

looses water pressure when in stand-by. when you recharge the pressure and use it the system goes upto 2.5 bars pressure, then drops below 0.5. in stand-by
the minimum pressure should be 0.7 wich is what i charge it to.
jonathon@markwhite999.freeserve.co.uk, March 2006
have you got water coming out of the overflow outside??

if so the pressure release valve is stuck ope like mine was, had it replaced and it was fine, only cost about £10

Trigger, April 2006
Check the pressure in the expansion vessel using a tyre pressure guage when the system is under zero pressure. It should be about 0.8 bar. If not pump it up with a bicycle pump.

Gaz, March 2006