Question about Heating & Cooling
Depends on how you "reversed polarity " if you have just connected the hot and neutral backwards that's not bad just remove power and swap them , Now if you have somehow connected the incoming power to the low voltage control wires , then that's a problem ! im guesing that some parts got damaged then
Posted on Dec 20, 2016
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Posted on Jan 02, 2017
SOURCE: My 90% York furnace went
Improper grounding can also cause that fault to come up. Check everything you can to make sure that all ground wires are connected. Make sure especially that the power line in is grounded to the body of the furnace.
I have had to in an extreme case drive a separate ground rod outside and run a ground wire directly from the furnace to the ground rod.
Also If have had a power surge take out the inducer AND the circuit board at once...the circuit board problem does not show up unitl the inducer fault is gone...
These types of problems can many times be very difficult to find and fix. It may take a lot of time and experimentation to discover the cause.
Posted on Nov 03, 2010
To reset any furnace just unplug and plug it back in. If the polarity has been reversed open up the small box the power cord goes to, you'll see white, black and green wires. find the ones that are attached directly to the power cord and switch the white with the black and vice versa.
Posted on Oct 19, 2011
SOURCE: coleman furnace
Reverse polarity means the power wires coming to the furnace are connected backwards. The black wire should the hot ( 120 volt line) . The white wire should be the neutral. The green should be the ground. Check these connections and test them to make sure they are correct. You should get 120 volt reading between the black and white.120 volts between the black and green and 0 volts between the white and green. Hope this helps.
Posted on Jan 02, 2014
Testimonial: "the only thing I don't get is if I shut the power of to it and leave it for a while it will come on it ran all night lastnight and now I cant get it to work for anything what would cause this the motherboard or what ever you call it was just changed Tuesday morning and it was working fine now the reverse polarity code if flashing"
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