“Is the thermostat on your Nest not cooling? Is it not allowing me to set the temperature? This article is designed to help you solve any problems.
Nest thermostat is an excellent smart home device for homeowners and business owners. The device works remotely to regulate room temperature.
If these methods do not resolve your Nest Thermostat’s cooling problem, you may need to reset the thermostat and check that all wires have been properly connected.
Nest Thermostat is not Cooling.
If it is a hot summer day and you decide to go inside for some relief from the heat, it may surprise you that the home air offers very little Cooling. If you notice that your Nest thermostat is not cooling properly, an alarm could set off, and your mind will begin to search for a solution. If your Nest thermostat has stopped cooling, you can take a look below for the fix.
Your Nest thermostat might not be cooling. You can do this by turning off the power to your thermostat and allowing it to rest for five mins. Once the time is up, switch the fuse off and wait for Cooling.
If you reset the thermostat and Nest is still not cooling your home as it should, you may need to check the wire connection, as mentioned in the previous section titled “Nest Thermostat Cooling Problems/Troubleshooting.” When you are looking for wires that are not connected to the correct port, also be sure to check that all wires are free of any damage and that they have all been inserted secretly. It is possible to have cooling problems immediately if a wire becomes loose.
It’s not cool enough to fix the NEST thermostat.
Your Nest thermostat doesn’t cool down because your wiring was labeled incorrectly using the “Conventional” side. Re-labeled the wiring from your old thermostat system using the Heat Pump side. Then, wire your Nest as needed.
Installation of Wires
You must first switch off the power source to ensure your thermostat remains safe. Next, take the display off and inspect the wire connections.
Be aware that all wires must be in a vertical position. It is best to re-insert wires as this will guarantee the proper pressing of the button. Some cases may require you to straighten or strip the wire ends to ensure proper installation. Make sure always to check the wires!
Do You Need Maintenance?
If the Nest thermostat screen turns bluish but does not turn on when you need it to cool off or heat, If it does turn on but the screen turns blue, then reboot it. Then, how can you determine if your thermostat needs maintenance? You can restart the thermostat, and it will eventually work fine. After a while, however, the error returns. This indicates that your thermostat system must be maintained.
C-Wire System
You must remove your Nest Thermostat’s display to check the C/wire system. Also, make sure to check the C-connection for wires.
If there’s a wire attached, take it out and try again to plug it in after a while. Make sure the connection is secure. You may also be able to replace the damaged wire with a brand-new one to avoid cooling issues.
Functions and RH wiring
New nest thermostat devices use separate RC/RH wires to connect. Some people, however, use older thermostats.
These regulating parts form one “R”-wire with a piece.
It is the only connector to the bridge with the RC port and RH port. If this is the case, connect the single wire to Nest’s RH port.
- Check the device by turning it on. If the device continues to malfunction, reconnect the wire from Nest to the RC port.
- Verify and Repair the Wiring of Your Nest Thermostat
- Incorrect wiring can lead to problems.
- It is possible that your wiring was fine during winter, and you didn’t know it.
- However, incorrect wiring can cause the AC to stop working with the thermostat.
- Wires can be too short and stop working as intended.
Bad wiring may not cause problems immediately. - It might work for a while, but the wire gradually loosens and eventually falls out.
- Common wiring problems include the non-installation of the C wire.
- This common wire powers Nest.
Change the thermostat
Nest thermostats are capable of automatically updating. If your Nest thermostat is connected to Wi-FI, you can do this.
Sometimes, a manual update may be necessary.
Make sure your thermostat has a pending update. Open the Nest App and Home. The home screen will display your Nest thermostat. Select Settings, then Technical Info or Device Information. This will display the current version. And you can update.
It can be done on the thermostat.
Go to your home screen to access the Nest thermostat—select Settings. Tap Version, then update.
How do I factory reset the Nest Thermostat?
If the Nest thermostat does not cool, ensure you have tried every possible cause.
A quick refresh may solve the problem. You can factory reset by following the steps below.
- Open NEST (the application) on your smartphone.
- You will find your home screen in the upper left corner.
- Choose the house (or multiple houses) with the thermostat you want to remove.
- Tap on the thermostat you would like to be removed from your app screen.
- Click on the “Settings” link in the upper right corner.
- Scroll down to see the bottom.
- You have the option to “confirm thermostat” in red.
- Tap to confirm. The Nest account will remove your thermostat.
Blowing fuses can lead to an issue.
Also, if you blow a fuse on the air handler, the “nest temperature” will not cool.
Now, check for any signs of difficulty in the handler’s interior.
To remove the cover, you need a tool like a screwdriver. A small circuit is visible with a few fused fuses.
It’s great if you can find the fuse that is blown. If it is not, you should replace it.
Nest Thermostat not cooling after a power outage
Nest doesn’t run off power lines like traditional thermostats. But it does draw power from the HVAC system. Nest will shut down if there is a power disruption. The Nest will not be able to power back on until it has been restored. The problem could be that your Nest thermostat does not cool after power has been restored.
If your Nest thermostat doesn’t cool after a power outage, you might need to reset the internal and exterior breakers. Please turn off your Nest thermostat and turn it off again. The AC will reset automatically after 30 minutes.
After the 30 minutes have expired, turn Nest on again and select the option for Cool Mode. The system should then restart. Once the message has been received, let Nest turn off for a while. After that, you should hear air coming out of your vents. Eventually, the air will become cooler.
Conclusion
There are four main reasons why your Nest thermostat won’t cool:
Wires for thermostats are often mislabeled
Tripped circuit breaker
RC / RH wiring issues
Blowing a fuse in air handler
You can also try these troubleshooting techniques if none of them work.
- Check Nest compatibility with your cooling system
- Restart your Nest
- Reinstall the old thermostat
- If you have still experiencing cooling problems after trying the above solutions, it’s a good idea for you to call a professional. They can spot every problem in your wiring and fix it before you do. They will also be able to handle the project safety.