How to mend Glow-worm Flexicom 15h

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My central heating is not working?

Central heating not working?

BMU error code?

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

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

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

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Suprima 50?

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fitting thermostat?

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Home heating systems?