Flexicom 30cx Boiler F14 error code. Help please

kPATm

kPATm

kPATm

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Joined
7 Apr 2009
Posts
1,827
Location
Greenock, Scotland
Evening all. My boiler has just started throwning a F14 error code. If I do a reset the system will work for a bit then throw the same code aftrer a few minutes. Any help is greatly appreciated
 
It says

"defective gas valve. However, check there is power from the PCB to the gas valve. If not, it's not the gas valve at all, but either the PCB or the wiring harness"
 
Im still getting this error. Has anyone tried to flush out the heat exchanger on one of these?
 
We have had the house for 7 years and it hasnt been serviced in that time. Is it possible to clean the heat exchanger by my self. I have pretty good access to remove it but not sure the steps I need to take before doing so?
 
Can you elaborate on the PCB fauly. Is it usually anything specific component wise?
 
It seems to work on just the heating but as soon as I turn on the hot water more times than not it will throw the code
 
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