Hermann Ikon 23T

I went to look at a Hermann Ikon 23T which is also known as a Icon 23T and I believe was made by Hepworth and sold through Travis Perkins. The boiler was not working for either heating or hot water.

Upon opening a hot tap and the boiler would start up, the fan would run and the pump would kick in. The electrode would also spark. The spark would stop and the red warning light on the right hand side would illuminate.

I checked for gas pressure at the valve inlet which was good. The pressure was not fluctuating when you expected the gas valve to open. I took the cover off the PCB attached to the gas valve and checked for voltage on the solenoid connections. There was 240v at both the upper and lower pins.

I replaced the gas valve which was a Sit Sigma 845 and the boiler was working as it should be again.

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.