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Mend Glow-worm XSI Boiler Changed Heat

glow worm xsi?

i have a new glow worm xsi sytem boiler and the boiler keeps over heating and goes to f5 have changed the over heat sat and still have the same problem can some help.

pat charlton road
December 2008

Glow-worm Glow-worm XSI Heating, Home Heating Systems Boiler Changed Heat

Have you checked that the Auto Air vent cap is loose ?
If this is ok then you should be looking at your thermisters.

M
December 2008

hi, when you say new ! has it just been fitted ? or has it worked ok b 4 and just started to over heat ! if it just been fitted i would say you have a air lock some where in the system.

graham
December 2008

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Glow-worm XSI Boiler Overheating - F5 Error