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Posted by boilerman on February 19, 2011 at 10:58:32:
In Reply to: Re: 7800 Fault posted by Boilerman on February 19, 2011 at 10:56:17:
: : We are getting a honeywell 7800 fault 109 on our CB, Call service. I think it has something to do with ground, this just from searching. Anyone got any help? Thanks!
Bad neutral. Check for voltage form L2 to ground