Re-Glow Worm 55F Fuel saver boiler.
Fault:- boiler fires up and remains lit for 40secs., it then cuts out for a period of 5mins then restarts and continues this cycle of stop start at the intervals mentioned.
Air flow sensor working ok, overheat stat and control stat are both ok, shorted out to be sure. System water flow and pump confirmed to be ok and room stat checked. As a last resort the PCB was changed but still the same problem. as far as I can see there is nothing else to check or have I missed something. Help in this matter would be greatly appreciated.

James, November 2008

What was the cheapest Fan assemble replacement you could find ?

steve ( chopsmoss@hotmail.com), February 2009

Re- Glow Worm Boiler
Thanks Tony, the fan was the problem.

James, November 2008

Re Glow Worm 55f boiler, header tank and system ok,fan pressure s/w contacts remain closed during fan running. Back to the problem. Thanks for replies

James, November 2008

Have you checked the header tank in the loft.If it is empty the boiler will be cutting off as a safety measure.

Tony S, November 2008

Check fan,breaking down when hot

a, November 2008