F9 fault code on Glow-worm Flexicom?

DomHeating123 · 1 May 2018

Just received a call for a third time for a glow-worm flexicom going out on F9 fault code. First time I went to it I reset it and fired up no bother, second time I read up about faults related to it such as pressure sensor so I drained the boiler out of relief valve pressure readings okay on so refilled and boiler ran okay, this the third time now any ideas?

lightning · 1 May 2018

If pink pressure sensor then I would replace plus pump up expansion vessels

DomHeating123 · 8 May 2018

I pumped up the vessel and removed and cleaned sensor, was working fine but it conked out overnight again, its just a black pressure sensor, should I still replace?

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F9 fault code on Glow-worm Flexicom?

DomHeating123

lightning

DomHeating123

DIYnot Local

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