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

I have a 30cx Glow worm boiler suddenly started to give cold water only. I don.t know how to fix it? I switched the mains off and on. The boiler starts and restarts but then the error
F4 comes up. Can you guide please?

Sheri
June 2019

Heating, Home Heating Systems Water Worm Boiler

https://job-prices.co.uk/glow-worm-flexicom-fault/

http://www.boilererror.co.uk/errors.php?merk=7&ketel=90&storing=1584&subcode=0

https://www.diynot.com/diy/threads/glow-worm-flexicom-30cx-error-code-f4.207734/

Shhshh
June 2019

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

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

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

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Worcester boiler dripping water?

Vaillant ecotec 831 plus?

Remove boiler cover?

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