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Hi hope someone can help with this intermittent problem !!

On a Thorn Apollo 30/50 , we have recently had gas valve replaced.

However , after about a week the pilot light now leaves a soot deposit on the end of the thermocouple which I assume restricts the heat getting to it , and therefore shuts down the pilot flame. When the soot is cleaned off it relights and stays on , usually for about a week at a time.

I have removed the pilot tube & blown out any dirt & also renewed the pilot injector .

We have had Corgi tradesmen to date but its still not reliable.
Is there any other cause & solution of this problem I can try please?

Hi,

Could be the thermo starting to break down.
Soot in a small amount should not do this,but, if its a lot of soot then thats a worry-- get an RGI

Thanks steve. The T/c is fairly recent , but for the avoidance of doubt in case its a faulty one I'll try renewing it & see if this works. Failing that
I'll go to the experts.

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Could you try turning down the pilot flame on the gas valve? or another sugestion is to double check to see if the thermocouple is positioned correctly?

Dan

Is the flame yellow? if so get in an expert and do not use the fire until then.