The pilot light for my Potterton Kingfisher boiler remains lit when the HW or CH are not required. However, upon either HW/CH being turned on the burner fires up and starts off heating the water/radiators fine for a few minutes but then suddenly cuts out and extinguishes the pilot light too. I then have to wait a few minutes before I can successfully re-light the pilot light as attempting to do so immediately after it cuts out is not possible as the pilot light does not remain lit once I release the grey control button.
not really, it sounds like your boiler may have a blockage in heat exchanger or flue, light the boiler and look through viewing window, turn it on and watch the flame picture, if it starts to lift from the burner then a corgi man needs to be called.
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