How to Change Fahrenheit to Celsius on Carrier Remote: A Comprehensive Guide


Changing the temperature display from Fahrenheit to Celsius on a Carrier remote can be a straightforward process, but it’s essential to understand the nuances and potential issues that may arise. This comprehensive guide will walk you through the step-by-step instructions, provide technical insights, and offer solutions to common problems you may encounter when making this adjustment.

Changing the Temperature Display: Step-by-Step Instructions

how to change fahrenheit to celsius on Carrier remote

To change the temperature display from Fahrenheit to Celsius on a Carrier remote, follow these steps:

  1. Turn off the Unit: Begin by pressing the ON/OFF button to turn off the Carrier unit.
  2. Access the Display Settings: Press and hold the MODE button for approximately three seconds. This will bring you to the display settings menu, where you’ll see the letter “F” in the center, indicating the current Fahrenheit temperature display.
  3. Switch to Celsius: Using the up or down buttons on the right side of the remote, navigate to the letter “C” to change the temperature display to Celsius.
  4. Confirm and Exit: Once you’ve selected the Celsius option, press the FAN button on the left side of the remote to confirm the change and exit the display settings menu.

Technical Insights and Potential Issues

Carrier mini split heads, commonly used in the US market, have a known issue where the temperature display can switch from Fahrenheit to Celsius without any user input. This is due to the units being adapted for the US market rather than being specifically designed for it.

The problem is often found on the latest generation Carrier mini split head units, which feature a single-screw disassembly design. This design can make it easier for the temperature display settings to be inadvertently changed, leading to the unexpected switch from Fahrenheit to Celsius.

To address this issue, it’s essential to be aware of the potential for the temperature display to change without your intervention. Additionally, it’s crucial to follow the steps outlined above carefully to ensure that you successfully change the display to your preferred temperature scale.

Advanced Troubleshooting and Customization

In some cases, you may encounter additional challenges or desire more advanced customization options for your Carrier remote. Here are a few additional tips and considerations:

Resetting the Temperature Display

If you’ve tried the steps above and the temperature display still doesn’t change as expected, you may need to reset the remote to its factory settings. Refer to your Carrier Enterprise owner’s manual or contact the manufacturer for specific instructions on how to reset the remote and restore the Fahrenheit temperature display.

Accessing Advanced Options

Carrier Enterprise offers advanced options that may allow you to further customize the temperature display and other settings on your Carrier mini split system. Consult the Carrier Enterprise Advanced Options guide (link provided in the references) for more information on accessing and navigating these advanced features.

Firmware Updates and Compatibility

Depending on the age and model of your Carrier mini split system, there may be firmware updates available that address the temperature display issue or introduce new customization options. Check with Carrier Enterprise or your local HVAC technician to see if any firmware updates are available for your specific unit.


Changing the temperature display from Fahrenheit to Celsius on a Carrier remote is a straightforward process, but it’s essential to be aware of the potential issues and technical nuances that may arise. By following the step-by-step instructions and understanding the underlying factors, you can successfully make the temperature display change and ensure your Carrier mini split system is operating to your preferences.

Remember, if you encounter any difficulties or require further assistance, don’t hesitate to consult your Carrier Enterprise owner’s manual, the Carrier Enterprise Advanced Options guide, or reach out to the manufacturer or a qualified HVAC technician for additional support.