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Glow worm 30ci Fault F12?

Hi the display is showing a F12 with red light flashing the boiler is not working at all any advise?Thanks Bill
BILL, July 2008
I hava a fault on my boiler saying f12 fault and red light flashing, i have changed the pcb but with the new one it doesn't even work , the display doesn't go on.
What else can it be?

Kiko740, January 2016
I hava a fault on my boiler saying f12 fault and red light flashing, i have changed the pcb but with the new one it doesn't even work , the display doesn't go on.
What else can it be?

Kiko740, January 2016
I hava a fault on my boiler saying f12 fault and red light flashing, i have changed the pcb but with the new one it doesn't even work , the display doesn't go on.
What else can it be?

Kiko740, January 2016
user interface or distant control panel fault.....

sounds like a pcb, or possibly if you have remote programmable stats or something there may be a fault with it

T, July 2008
link Click here to see other fixes for Glow-worm 30ci.