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I had a friend come over and install a new programmable thermostat. The new one only ran the heat. When he put the old one back on, that only ran the heat too. Everything (heat, fan, A/C all ran fine before new one was put in). I have replaced the new old with the old one again and still no A/C or fan. Only heat..... Any suggestions?
 

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model# of old thermostat, model# of new thermostat, do you have a heatpump. Post pictures of the thermostat, and the connections with their colors on the air handler. If everything was hooked up as they were on the old thermostat, then someone did not read the installer instructions in setting up the new one for your system.
 

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Old one is a Honeywell (can't find model #), new one is a hunter 44110. I'll see if I can post pics. Thanks!
 

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model# of old thermostat, model# of new thermostat, do you have a heatpump. Post pictures of the thermostat, and the connections with their colors on the air handler. If everything was hooked up as they were on the old thermostat, then someone did not read the installer instructions in setting up the new one for your system.
I have a forced air furnace (not sure what a heat pump is)
 

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The Heat pump sits outside. Looks like a air conditioner, but it allows the heat to be pulled from outside when it is cold out, and runs like a ac during warmer months. Compare the wire connections and color on the thermostat to what they are like on the air handler. Use a sheet of paper to put down on one side the connections at the thermostat, and on the other the connections at the air handler. From there it should hook up. Also make sure you have batteries installed in the thermostat, and when you make the connections make sure the power is shut off on the air handler, so that you do not blow any fuses.

Once connected, going through the programming is all you have left to do.
 

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what is an air handler and where are the wires? lol
Depends on if you are in a home or apartment. Could be in a closet, your attic, or a space that you need maintenance to get to if you are in a condo. The wires would be in the bottom of the unit where the fan is for moving the air across the coil & heat exchanger.
 
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