Glowworm Flexicom 15HX F1 Fault Lighting With A Bang

I was called to look at a Glowworm Flexicom 15HX which a customer was concerned about. The boiler was just over two years old and had been serviced six months ago. The boiler had occasionally been lighting with a bang for some time but not every time it lights. This was occuring prior to the service but the engineer was unable to establish a cause.

I checked the gas inlet pressure, and the combustion performance which were both perfect. I removed the electrode and there was slight distortion to the probes and some darkness to the tips. I replaced the electrodes and the boiler is lighting a lot better and the problem should hopefully be solved.

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.