Carrier furnace not igniting-bad control board?
Probably a bad circuit board as it is giving false readings. Should not give the 2nd code as it cannot initiate a call for heat with a blown fuse. Try americanhvacparts.com for carrier parts
make sure you have a proper 120 volts to the furnace. 120 from hot to ground not neutral, 0 from neutral to ground and continuity from the green ground wire to a copper water line. use a cheater wire from water line to your meter if necessary. if you have reversed polarity or a bad ground or neutral it can give false readings. rare but possible.
"Cut it twice and it is still too short".
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Last edited by yuri; 04-17-2011 at 11:04 AM.