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- Sun Sep 23, 2012 9:59 pm
- Forum: Coleman Service & Repair
- Topic: heat coils and ac both working same time?
- Replies: 7
- Views: 4954
Re: heat coils and ac both working same time?
There's a few things it may be. Check your thermostat. Your thermostat wires could be contacting each other. R= Power to thermostat relay G= Fan W= Heat Y= Cool C= Common (from condensing unit) When R and W come in contact, it establishes a call for heat. When R and Y come in contact, it establishes...