How to mend Glow-worm Swiftflow 75/80/100

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

Central heating not working?

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Suprima 50?

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My central heating is not working?

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water from taps is boiling hot?

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BMU error code?

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

glow worm 2boiler fires up for 10 to 20 mins then shuts off whats wrong?

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

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fitting thermostat?

Home heating systems?

glow work swiftflow 75/80/100?

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My radiators not heating up?

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How can I fix my glow worm flexicom 30cx ?