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Mend Glow Worm Swift Flow Boiler Heating Vibration

Glow Worm Swift Flow 1997 condensing boiler?

My Glow Worm Swift Flow condensing boiler when i turn the hot water tap on i get hot water but the pressure gage bounces up and down and makes a low
vibrating noise, please can anyone give me any advice on how to fix this?

Oz1
July 2009
Glow WormGlow Worm Swift FlowHeating, Home Heating SystemsBoiler Heating Vibration
The mini expansion vessel on the cold water inlet below the dhw flow switch will need to be re-pressurised.

Ian
July 2009

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Glow Worm Swift Flow Boiler Pressure Issue