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Mend Glow-worm 30HXI Showing Glow Boiler

Filling up my boiler-Glow Worm30HXI?

I have a fault F5 showing on my Glow Worm 30HXI boiler. How do I fix this. I have no instruction booklet. Thanks H

H Garbutt
April 2008

Glow-worm Glow-worm 30HXI Heating, Home Heating Systems Showing Glow Boiler

F5 is an overheat fault, due to maximum temperature being exceeded

Check both the overheat stat and ch thermisters
Possible air in the system, make sure system pressure is 1-1.5 bar and all air has been bled from the system
Check pump is working correctly and does over run when boiler reaches temp.

If you want the manual email me, tony@oilburnerservices.com

T
April 2008

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Glow-worm 30HXI Boiler: F5 Fault & Filling