My customer says her husband replaced their thermostat and now the outside A/C unit comes on with the heat. I know it's a simple solution but this isn't the type of wiring I normally do, although I can surely figure it out in a couple of minutes. Can someone save me some time here and tell me what's gone wrong?
Thermostat wiring mix-up
- Thread starter JES2727
- Start date
- Status
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
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charlie k.
Senior Member
- Location
- Baltimore, Md.
John, sounds like he may have installed a stat meant for a heat pump.
Charlie
Charlie
hillbilly1
Senior Member
- Location
- North Georgia mountains
- Occupation
- Owner/electrical contractor
I think Charlie has hit it on the head.:smile:
Minuteman
Senior Member
- Location
- The Sooner Nation
I 90% agree with Charlie. Another slim possibility is the striped copper from the Y (cooling) terminal is touching the W (heat) terminal and brings on both.
- Status