just installed new thermostat, because could not get my outside a/c fan to kick on. After i installed new thermostat when i turn on heat mode my outside a/c unit comes on and blows cold air. I need help to figure out what i did wrong. i installed thermostat wires the same as on the old thermostat. Thanks for any and all help
Sounds like you just got a wire or two hooked up wrong somewhere (common error). Sometimes new stat terminal maybe a little different than old stat. Can you please post a pic of the thermostat terminal and control board terminal on hvac unit? Also name and model of stat. Thanks.