How to mend Glow-worm Fuel Saver Mk 11

glow worm 30cxi bolier?

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I have a 30cx glowwarm that is showing F4 as fault.I have no hot water?

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Which way to turn slotted screw to adjust water pressure up on a glow worm ?

fitting thermostat?

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what causes the sabre he 25 to come on, on its own?

Suprima 50?

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I have moved into a flat am dissabled carnt get heating on unit flashing F1?

Is it normal that the flame is burning all the time?

Glowing 30hxi?

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Central heating not working?

how can i fix my central heating. Glow-worm ultimate?

My radiators not heating up?

What can I do about a Glow-worm Flexicom 30cx fault code F11?

How can I fix my glow worm flexicom 30cx ?

performa 30 he fault fan flue lights on ?

My central heating is not working?

Home heating systems?

Glow Worn Micron 50FF?