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Mend Glow-worm Flexicom 30cx Boiler Fault Code Heating

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

I had a new boiler fitted in April this year. Last eve it stopped working, showing f 11. We have not been using the central heating, only hot water, for several months. In May it showed F25, but we bled the radiators and reset boiler and it has provided hot water ever since - but we have not used the central heating system since. Please advise what is wrong and can I reset it, or should I call out the fitter?

K Venn
August 2016
Glow-wormGlow-worm Flexicom 30cxHeating, Home Heating SystemsBoiler Fault Code Heating
If combo boiler heater check the gauge on the dashboard it must read 1.5-2.0, underneath the heater/boiler there will be a thin copper pipe with a tap at each end, open both taps inline with the pipes and watch the gauge till it reaches at least 1.5 then turn them both off, your machine should then work,
It is a safety measure to stop the pipes being burnt out through lack of water in the system.

Rick
August 2016
Superficial research suggests flow/return thermistor issues

Probably best to call in a specialist

Good Luck...
August 2016

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Glow-worm Flexicom 30cx F11 Error - Fix or Call?