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Mend Glow-worm Ultimate Clock Override Glowworm Boiler

Glow-worm Ultimate Clock Override ?

My boiler keeps switching itself on and off when the clock is off.
I have replaced the clock.
I thought this couldn't happen!

Tony
September 2009
Glow-wormGlow-worm Ultimate Clock OverrideHeating, Convector HeatersGlowworm Ultimate Boiler

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Glow-worm Boiler Override - Fixes & Help