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Mend Glow-worm HXI 18 Glow Worm Replaced

glow worm boiler f9 code?

glow worm hxi 18 gas boiler, F9 fault code. have replaced main p,c,b board. still has same code, now i have replaced the fan assembly. still has the same code, when switched on the fan runs for a second then locks out with F9 code . can anybody help.

mark
November 2009
Glow-wormGlow-worm HXI 18Heating, Home Heating SystemsGlow Worm Replaced
does the pump run??? most likey problem

jimal
May 2012
Hi, I have recently experienced the same issue... had to reset the overheat thermostat....

But, the problem keeps on reoccurring - any permanent fix?

AC
January 2010
over heat has not tripped out. i will replace both thermisistors.and see what happens. f9 code is constant with flashing red light.

mark.
November 2009
I came across after searching the fault for mine. Mine flashes.

Chris
November 2009
is the f9 code flashing or constant? if its constant its likel to be either faulty thermisters or the overheat thermostat needs to be manually reset this is on the upper left hand side of the boiler next to the heat exchanger and has a red reset button

Brucey
November 2009
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