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nest thermostat blowing hot air on cool

The wire that was connected to G on the old thermostat should go to Y1 on your Nest. My wiring is good, so it's not the home wiring. If your AC is blowing hot air, the thermostat may have been accidentally set to “heat.” If this is the case, it’s easy to fix on your own. Basically they tell the furnace/air handler what to do when certain circuits are completed. (It worked perfectly in the winter with this setup) Looking at the furnace and NEST, the wiring is as follows: If everything checks out you can then get started following the instructions to install your nest. where is your c-wire? Thanks for the help. Nest button doesn't click quite right, or the thermostat just won't sit right on the base? IMO, every HVAC guy I know that says they hate the nest just doesn't understand networking, troubleshooting of networks, or they just are not technical on the computer side of things. Luckily the first time it was still under warranty and I got it replaced for free. nest thermostat is blowing hot air on cool. Installed a new thermostat and now it is blowing hot air on the air conditioning setting, yes, yes, did I mess up the - Answered by a verified HVAC Technician I have switched the thermostat to heat now that winter is here, but only cold air will blow from the vents, even though it is set to heat to 72 degrees (Fahrenheit). Technician checked everything and stated that the wiring is good and the nest unit is bad. Press on your Nest Thermostat unit to bring up the main menu. So I knew the heat was on. Go to duct and put your hand in front to feel the hot air coming out. No problems with heat or cool until this morning. The Fan setting will not cool your house; it simply circulates warm air. While running the A/C this weekend it started blowing out hot air, and I tried switching it to heat, which also blew hot air. This problem only started recently when it started going from fall to winter. Basically, if your system is wired like mine and is blowing hot air when in cool, just take out the W1. Dirty air … You need to go to the control board in your furnace and see where everything is hooked up to. I ended up finally needing a new system as we bought the house with the builder-grade installed one. You’re busy – and so is your family. No issues using heat. It’s pretty cool. Thanks all so much! ), please check the following: 1) Verify the wiring Thank you. Moving wires around to get various options to show in the nest won't do anything if those wires aren't in the proper terminals on the other end. Thanks in advance! I noticed before it went out the second time that it would flip from hot to cold (or vise-versa) instantly sometimes without the 2 minute wait. Use the silver scroll wheel and go to “Thermostat”. I removed that and it seemed to fix it. 2. Just because you put a white wire to the white terminal doesn't mean its wired properly on the control board of the Furnace, Update in case it helps anyone: Came up as cooling 2 on the OB, the white wire was showing as heat. First warm weather using my nest thermostat and now trying to use the central air. I've had this issue 2 times now. Hello all. I'd come home to a musty smelling blowing through my vents. The inside coils would freeze up and there would be frost around them. Either way, the Nest seems to only blow hot air on both Cool and Heat modes. I turned thermostat off and it still keeps running blowing hot air out of the ducks if i switch the thermostat to cool it blows cold air… By continuing to use this site you consent to the use of cookies on your device as described … Now that it is warmer out, we went to turn on the AC and saw we didn't have the option. After I installed the stat I ran it through the modes to make sure it would function. Basically, if your system is wired like mine and is blowing hot air when in cool, just take out the W1. I definitely have AC. You can do this by following the steps given below. Any help to rectify would be greatly appreciated. Press J to jump to the feed. No power to the R wire? AC fired right up and is working great. Then all the sudden the heat would turn on no reason. Thanks for all of you guys’ help, I made sure to include your comments when he came out but he said he already worked on 5 of these today and knew exactly where the issue was when he looked at it. So I decided to go out and buy a nest thermostat. Replaced thermostat, didn't work. The site may not work properly if you don't, If you do not update your browser, we suggest you visit, Press J to jump to the feed. Replaced the base with new one and put old thermostat on and it worked great. The only time it does not blow hot air is when I turn the air off and only use the fan. This article applies to all ecobee thermostats except Smart, Smart SI, EMS and EMS SI. FYI I live in AZ and 112 to 115 is considered a normal summer day. However, only the fan turns on and it doesn't actually cool no matter how long I run it.

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