Thermostat Troubleshooting: Solutions For Common Issues - Trane®

Thermostat Controls Troubleshooting

Without your thermostat, your HVAC system wouldn’t be able to function. Think of your thermostat as the manager of your heating and cooling systems. When you decide you want to change the temperature in your home, the thermostat is responsible for telling the other components of your HVAC system what to do.

If your thermostat isn’t cooperating, don’t worry. We have gathered support material to help you with the most common thermostat issues so you can easily get your thermostat back on track.

Smart Thermostat Troubleshooting

Models: XR724, XL824, XL850, XL1050, Link UX360

Visit Support CenterThermostat is not connected to WiFi

If power or WiFi goes out at your home, your thermostat will automatically reconnect when the power or WiFi comes back up. If the thermostat does not automatically reconnect to WiFi, it can be manually reconnected by following these simple steps:

1. Turn Wireless ‘Off’ and ‘On’ again: On the thermostat main screen, go to Menu→Settings→Network→Wireless, then “ON/OFF”
2. Reboot Thermostat: If the thermostat does not connect after turning the wireless off and on, try rebooting the thermostat.

For additional help, visit these smart thermostat resources for your specific product:

• Trane® XL824/850/1050
• Trane® XR724
• Trane® Link UX360

Thermostat is connected to WiFi but disconnected from Trane Home

If your thermostat is connected to WiFi (displays green bars), but is disconnected from the Trane Home account, please follow the instructions.

1. Ensure thermostat is on a secure WiFi network
2. Turn WiFi off by pressing Menu→Settings→Network→Wireless, then “ON/OFF”
3. Leave WiFi off for at least 30 seconds
4. Select Wireless “ON/OFF” to turn the wireless network back on
5. If the thermostat does not reconnect to the Trane Home network, power cycle your modem and router. Retry once they have rebooted and service has been restored.

Thermostat screen is blank

If your thermostat is blank, has a white screen, or a black screen take the following actions:

1. Power cycle your thermostat:
   • Ensure your HVAC system is not running. A good way to tell if it is running is to listen. If you hear the system running, then wait until the heating/cooling cycle completes before proceeding to next step.
   • Locate the switch for your thermostat in the breaker box.
   • Flip the switch to the “OFF” position for 20-30 seconds.
   • Return the switch to the “ON” position.
2. If the thermostat screen is still blank/white/black contact your HVAC dealer to have them inspect your thermostat and wiring.

How to create a Trane Home account

A Trane Home account provides you with the flexibility to adjust your temperature from virtually anywhere. It is recommended that you create your account using the Trane Home web portal, but it is also possible to create an account using the Trane Home mobile app.

• Creating account using Trane Home Web Portal
• Creating account using Trane Home Mobile App

How to enroll your Trane thermostat to a Trane Home account

When you enroll your Trane wireless smart thermostat in Trane Home, you can view and control your home's heating and cooling system from virtually any smartphone or internet connection. 

• In the Trane Home mobile app, select “Connect New Device”
• Select “Thermostat”
• Select “Continue” (a 5-digit activation code will appear)
• Return to the Thermostat screen, tap Menu→Settings→Smart Home
• Tap “Next”
• Press “Accept”
• On the thermostat screen, enter the 5-digit code that was given in the mobile app and press “Next”
• Follow the on-screen prompts on the thermostat to complete the setup process

For additional help, visit these smart thermostat resources for your specific product:

• Trane® XL824/850/1050
• Trane® XR724
• Trane® Link UX360

Thermostat How-To Videos

• Trane® Link UX360 Smart Thermostat – Connecting to WiFi and Enrolling in Trane Home
  • This video will give you brief tutorial on how you can connect your Trane Link UX360 smart thermostat to WiFi and enroll in the Trane Home mobile app.
• Trane® XL824/XL850/XL1050 Smart Thermostats – Connecting to WiFi and Enrolling in Trane Home
  • This video will give you brief tutorial on how you can connect your Trane XL824, XL850, or XL1050 smart thermostats to WiFi and enroll in the Trane Home mobile app.
• Trane® XR724 Smart Thermostat – Connecting to WiFi and Enrolling in Trane Home
  • This video will give you brief tutorial on how you can connect your Trane XR724 smart thermostat to WiFi and enroll in the Trane Home mobile app.

Basic operation of thermostat

For basic operation, please consult your thermostat’s owner’s manual.

• Trane® XL824
• Trane® XL850
• Trane® XL1050
• Trane® XR724
• Trane® Link UX360

Here are other helpful thermostat operation guides for the XL series thermostats:

• Setting temperature schedules using your thermostat or by using the web portal or mobile app.
• Controlling Fan Settings
• Smart Optimization on XL824 and XL850 thermostats
• Adding a mobile device to your Trane Home Account
• Linking Trane Home to Amazon Alexa™ or Google Home™

You can find more guides to help you set up and use your smart thermostat in our online support portal.

How to reboot your thermostat

1. Ensure your HVAC system is not running.  If it is, please turn it off.
2. Locate the switch for your thermostat in the breaker box.  The thermostat is typically on the same circuit as your HVAC system.
3. Flip the switch to the OFF position for 20-30 seconds.
4. Return the switch to the ON position.

Certain models have the option to reboot from the thermostat menu. See specific instructions for the XL824, XL850, XL1050, and Link UX360 thermostats below.

• Trane® XL824/850/1050
• Trane® Link UX360

The Indoor Temperature or Humidity Displayed on My Thermostat Isn't Correct

The temperature displayed on a Trane® XL824, XL850, or XL1050 thermostat can be adjusted if it displays the incorrect temperature.  The displayed humidity can also be recalibrated if needed. You will need to use a separate temperature or humidity sensor that is known to be accurate in order to verify that the thermostat is reading correctly.

1. On the thermostat main screen, go to Menu→Settings→Thermostat→Indoor Calibrations.
2. Use the up/down arrows to adjust the Indoor Temp and Humidity correction and select Apply.

Thermostat is already registered to Trane Home when trying to enroll

When enrolling your thermostat to your Trane Home account, if you see a message that says the thermostat is currently registered to a Trane Home account, it is because the previous homeowner did not unregister the thermostat from their account when they moved. This can only be corrected by calling Trane Home Customer Support at 1-877-288-7707.