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Mend Glow-worm MICRON 77 FF Boiler Lockout

faulty heating?

Hi, my blr. is a G/W MICRON 77 FF.it fires up & runs for a short period then goes into lockout.Ikeep having to re-set it on the boiler.Pump runs,fan runs, fires up ok.I have 2,-2port valves, pump & a manual by pass.

colin787
February 2009

Glow-worm Glow-worm MICRON 77 FF Heating, Home Heating Systems Boiler Lockout Glowworm

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Glow-worm Micron 77 FF Boiler Lockout - Help