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boiler fault ariston a/23 mffi?

Dear all,
Could you please advise.
My daughter has a Euro combi A/23 MFFI boiler that works for about 15 minutes and then the ignition lock out LED light comes on and stops the system. I have changed the overheat thermostat and the heating temperature censors but it still trips out.
There doesn't seem to be a serious problem with the system but obviously something is wrong.

Here's hoping you can assist,

part 2


Hi,
A bit more info about my boiler,

The boiler and the system have now been fully flushed though and showed no signs of any flow or overheating problems. When the boiler is working, all variable temperatures were checked and verified by another meter.

When the problem starts I can see the boiler flame working properly and then it try's to go out and then start again 2 or 3 times and then goes out, a few seconds later and the red light comes on, which shuts the boiler down.

There doesn't seem to be an ignition problem.

Any advice will be appreciated.

Regards,
kb, January 2009
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