Glowworm Ultimate Failing To Light

I was called to look at a Glowworm Ultimate which was failing to light today. Upon arrival it was still attempting to light as I could hear it sparking. Sometimes the ignition lead wears through at the point where it passes through the casing, but insulating this with electrical tape usually solves this problem as was already the case with this boiler.

After removing the case the spark could be seen at the ignition electrode and there was a tiny flame but not big enough for rectification to occur. I turned the boiler off and stripped out the pilot injector. Holding it up to the light there should be two holes clearly visible. In this case there was only one hole partially visible. I ran it under the tap and blew through the injector forcing the water through until both holes were clear.

After replacing the injector and case, I lit the boiler which ignited first time, solving the issue.

Disclaimer: The works described in this blog are a record of work undertaken and should not be taken as guaranteed to solve your problem. Work should only be carried out by persons qualified and competent to do so.