How to Reset Trane Reverse Cycle Air Conditioner: A Comprehensive Guide

Resetting a Trane reverse cycle air conditioner can be a straightforward process, but it’s essential to understand the proper steps to ensure the unit functions correctly. This comprehensive guide will walk you through the step-by-step process of resetting your Trane reverse cycle air conditioner, providing you with the technical details and expert-level insights to tackle this task confidently.

Locating the Reset Button

The first step in resetting your Trane reverse cycle air conditioner is to locate the reset button. This small, red button is typically situated on the outdoor unit of the air conditioner, often near the electrical connections or the access panel. Carefully inspect the unit to identify the reset button’s exact location, as it may vary slightly depending on the model.

Preparing for the Reset

how to reset Trane reverse cycle air conditionerImage source: Flickr

Before you begin the reset process, it’s crucial to ensure that the air conditioner is turned off at the thermostat. This step is essential to prevent any potential damage to the unit or electrical components during the reset. Additionally, make sure that you have a stable, secure platform to access the outdoor unit, such as a step ladder or a sturdy platform, to ensure your safety while working on the unit.

Resetting the Air Conditioner

  1. Locate the Reset Button: Once you have identified the reset button’s location, carefully examine the area around it to ensure there are no obstructions or debris that could interfere with the reset process.

  2. Press and Hold the Reset Button: Using your finger or a non-metallic tool, press and hold the reset button for approximately 5-10 seconds. This duration may vary slightly depending on the specific Trane model, so it’s essential to refer to the manufacturer’s instructions or consult with a professional HVAC technician if you’re unsure.

  3. Release the Reset Button: After holding the button for the recommended duration, gently release the reset button. This action should initiate the reset process, and the air conditioner should begin to power up and initialize.

  4. Verify the Reset: Once the reset process is complete, turn the air conditioner back on at the thermostat and observe its operation. Ensure that the unit is functioning correctly and that any error codes or issues that prompted the reset have been resolved.

Troubleshooting the Reset Process

If the reset button does not seem to be working or the air conditioner is still not functioning correctly after the reset, there are a few additional steps you can take:

  1. Check for Power: Ensure that the air conditioner is receiving power by verifying that the circuit breaker or fuse is not tripped or blown. If the power supply is interrupted, the reset button may not function as intended.

  2. Inspect the Reset Button: Examine the reset button for any signs of damage or obstruction. If the button appears stuck or is not responding, you may need to replace the button or consult a professional HVAC technician for further assistance.

  3. Consult the Manufacturer’s Instructions: Refer to the Trane air conditioner’s user manual or the manufacturer’s website for specific instructions on resetting the unit. Some models may have additional steps or requirements that are not covered in this guide.

  4. Contact a Professional HVAC Technician: If you’ve exhausted all the troubleshooting steps and the reset process is still not successful, it’s best to contact a qualified HVAC technician. They can diagnose the issue, identify any underlying problems, and provide the necessary repairs or maintenance to restore your Trane reverse cycle air conditioner to optimal performance.

Remember, safety should always be your top priority when working on any HVAC equipment. If you’re not comfortable or confident in your ability to reset the air conditioner, it’s best to seek the assistance of a professional.


Resetting a Trane reverse cycle air conditioner can be a straightforward process, but it’s essential to follow the proper steps and safety precautions to ensure the unit’s proper functioning. By understanding the technical details and expert-level insights provided in this guide, you’ll be well-equipped to tackle this task confidently and keep your Trane air conditioner running smoothly.


  1. How to Find the Reset Button on a Trane AC Unit Model
  2. Trane Residential Troubleshooting Guide
  3. Trane Demonstrates How to Reset Your Air Conditioner