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Mend Glow-worm 40B Heating Radiators Hot Water

how can i fix my glow worm boiler model 40B?

radiators get warm when hot water on

Derek
August 2010
Glow-wormGlow-worm 40BHeating, Home Heating SystemsHeating Radiators Hot Water
sounds like the c/h zone valve or mid position valve is letting by....d/down system and replace mate.

Neill the gas
August 2010

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