How to Reset Fujitsu Outdoor Unit: A Comprehensive Guide

Resetting a Fujitsu outdoor unit can be a crucial step in troublesshooting and maintaining your air conditioning system. Whether you’re experiencing issues with your unit or simply want to start fresh, this comprehensive guide will walk you through the step-by-step process of resetting your Fujitsu outdoor unit, providing you with the technical details and expert-level insights to ensure a successful reset.

Locating the Reset Button

The first step in resetting your Fujitsu outdoor unit is to locate the reset button. This button is typically found on the outdoor condenser unit, often hidden behind a panel or cover. Refer to your Fujitsu user manual or contact Fujitsu customer support if you have trouble identifying the exact location of the reset button.

Identifying the Reset Button

The reset button on a Fujitsu outdoor unit is usually a small, recessed button that may require a pointed object, such as a pen or paperclip, to press and hold. It’s important to note that the reset button may be labeled differently, such as “RESET” or “SERVICE CALL,” depending on the model of your Fujitsu unit.

Accessing the Reset Button

To access the reset button, you may need to remove a panel or cover on the outdoor unit. This can typically be done by unscrewing a few screws or gently prying the panel off. Take care not to damage any internal components while accessing the reset button.

Performing the Reset

how to reset Fujitsu outdoor unitImage source: Fujitsu AC by Dinkun Chen

Once you’ve located the reset button, it’s time to initiate the reset process. Follow these steps carefully to ensure a successful reset:

  1. Turn off the Air Conditioner: Locate the power switch or circuit breaker that controls the air conditioner and switch it to the off position. This will ensure that there is no electricity running through the system while you perform the reset.

  2. Press and Hold the Reset Button: Using a pointed object, firmly press and hold the reset button for approximately 5 to 10 seconds. During this process, you may hear a click or feel a slight vibration, indicating that the reset is taking place.

  3. Release the Reset Button: After holding down the reset button for the recommended duration, release it and ensure that it returns to its original position. This will signal to the air conditioner that the reset process is complete.

  4. Power Cycle the Unit: In some cases, a power cycle may be necessary to fully reset the outdoor unit. To do this, flip the circuit breaker off to completely remove power to the unit. Wait for 30-60 seconds before powering it back up.

Verifying the Reset

After completing the reset process, turn the air conditioner back on using the remote control or the control panel on the unit. Observe the unit’s behavior and check for any error codes or indications that the reset was successful.

Troubleshooting Common Issues

If you encounter any issues during the reset process or continue to experience problems with your Fujitsu outdoor unit, consider the following troubleshooting steps:

Outdoor Fan Error Codes

If you receive an error code on your indoor unit indicating an outdoor fan problem, clearing the fan of ice and ensuring that the blades move freely may not be enough to resolve the issue. If the error code persists and there’s no heat, it may be time to call for professional service.

Persistent Error Codes

If the error code continues to flash after the reset, it’s possible that the issue is more complex and may require further diagnosis or repair by a qualified HVAC technician. In such cases, it’s best to contact Fujitsu customer support or a local authorized service provider for assistance.

Power Cycling Considerations

When performing a power cycle to reset the outdoor unit, ensure that you wait for the recommended 30-60 seconds before powering the unit back on. This allows the system to fully discharge and reset its internal components.


Resetting your Fujitsu outdoor unit can be a straightforward process, but it’s essential to follow the proper steps and technical details to ensure a successful reset. By understanding the location of the reset button, the reset procedure, and common troubleshooting steps, you can effectively maintain and troubleshoot your Fujitsu air conditioning system, saving time and money on potential service calls.

Remember, if you encounter any persistent issues or are unsure about the reset process, it’s always best to consult with a qualified HVAC technician or reach out to Fujitsu customer support for further assistance.