I have a glow worm fuel saver 25-30 boiler.
I go away for a few weeks every summer and turn my gas off .
Usually my boiler lights after a few attempts but not this time. The
ignition lights the pilot light fine but even after holding the button in
for about 3-4 mins the pilot light goes out. The light does not seem to
"hit" the thermocouple "head on". it seems a little off centre. Would this
be a possible problem? It has always lit in the past.
Could I need a new thermocouple or is there a way to get it working better
such as cleaning the tip etc ?
The other likely problem (given flame isn't hitting it) is dirt/dust
in the pilot jet or barrel assembly (or possibly in a pilot gas filter
if the unit has one). If dirt is the case, you should also expect the
same with the main burners, and get the thing serviced, cleaned, and
checked. If the boiler is not room sealed, you should do this very year
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