Comprehensive Guide: How to Override Fujitsu Thermostat

Overriding a Fujitsu thermostat can be a useful technique for adjusting the temperature in your home or hotel room to your desired comfort level. This comprehensive guide will walk you through the step-by-step process of overriding a Fujitsu thermostat, covering both mini-split heat pump systems and hotel thermostats.

Overriding Fujitsu Mini-Split Heat Pump Thermostat

Step 1: Check the Remote Control Settings

If you have a Fujitsu mini-split heat pump system, you can program an offset into the unit to achieve a lower or higher temperature. This is done through the remote control settings. Refer to your installation manual for detailed instructions on how to access and adjust the temperature offset settings.

Adjusting the Temperature Offset

  1. Locate the remote control for your Fujitsu mini-split system.
  2. Refer to the installation manual to find the specific steps for accessing the temperature offset settings.
  3. Typically, you’ll need to press a combination of buttons or navigate through the menu options to find the temperature offset setting.
  4. Adjust the temperature offset to the desired value, which can be a positive or negative number depending on whether you want to increase or decrease the temperature.
  5. Save the new temperature offset setting and exit the menu.

Step 2: Check for Air Circulation Issues

If the Fujitsu mini-split unit is not achieving the desired temperature, it may be due to a lack of air circulation. Ensure that the unit is not blocked by shelves, furniture, or installed in a corner, as this can impede the airflow and prevent the system from effectively heating or cooling the space.

Identifying and Resolving Air Circulation Issues

  1. Visually inspect the Fujitsu mini-split unit and the surrounding area to ensure there are no obstructions or blockages.
  2. If the unit is installed in a corner or near a wall, try moving it to a more open location to improve air circulation.
  3. Check for any furniture or other items that may be blocking the air intake or discharge vents of the unit.
  4. Ensure that the air filters are clean and unobstructed, as dirty filters can restrict airflow.
  5. Consider the room size and layout to determine if the Fujitsu unit is appropriately sized for the space. An undersized unit may struggle to maintain the desired temperature.

Step 3: Check for Proper Installation

If the Fujitsu mini-split unit is still not achieving the desired temperature, the issue may be related to improper installation or undercharging of the refrigerant. Ensure that the unit was installed correctly and has been properly vacuumed and charged.

Verifying Proper Installation and Refrigerant Charge

  1. Review the installation manual to ensure that the Fujitsu mini-split unit was installed according to the manufacturer’s specifications.
  2. Check for any signs of improper installation, such as incorrect refrigerant line sizing, improper insulation, or incorrect electrical connections.
  3. Consult a qualified HVAC technician to perform a comprehensive inspection of the system, including checking the refrigerant charge and verifying that the unit is operating within the manufacturer’s recommended parameters.
  4. If the refrigerant charge is found to be insufficient, the technician can recharge the system to the proper level.

Overriding Fujitsu Hotel Thermostat

how to override Fujitsu thermostatImage source: Fujitsu AC by Dinkun Chen

Step 1: Identify the Thermostat Type

Before attempting to override the Fujitsu hotel thermostat, it’s important to determine the specific model and type of thermostat installed in the hotel room. This will help you identify the appropriate override procedure.

Common Fujitsu Hotel Thermostat Models

  • Fujitsu UTY-RNNGM
  • Fujitsu UTY-RVNYN
  • Fujitsu UTY-RVXYZ

Step 2: Initiate the Override Sequence

Once you have identified the Fujitsu hotel thermostat model, you can proceed with the override sequence. The general steps are as follows:

  1. Hold down the display button and then the off button.
  2. Press the up temperature button until “LEN” appears on the screen.
  3. Press the up temperature button again to override the thermostat and adjust the temperature as desired.

Troubleshooting the Override Sequence

  • If the initial sequence does not work, try variations, such as holding the buttons for different durations or pressing the buttons in a different order.
  • Some Fujitsu hotel thermostats may have additional security measures in place, making the override process more challenging. In such cases, you may need to consult the hotel staff or a professional HVAC technician for assistance.

Step 3: Proceed with Caution

It’s important to note that overriding a hotel thermostat may be against the hotel’s policy and could potentially result in additional charges or penalties. Proceed with caution and be mindful of any potential consequences.


Overriding a Fujitsu thermostat can be a useful technique for adjusting the temperature in your home or hotel room to your desired comfort level. By following the step-by-step instructions provided in this comprehensive guide, you can effectively override both Fujitsu mini-split heat pump thermostats and Fujitsu hotel thermostats. Remember to always prioritize safety and be mindful of any potential consequences when overriding a thermostat.


  1. Hotel Thermostat Hack: Override Your Room Temperature
  2. Override Hotel Room Thermostat VIP Mode AC Hack Bypass
  3. How to make your hotel room hotter (or colder) – thermostat VIP hack!
  4. Override Fujitsu remote control
  5. Help Fujitsu UTY-RNNGM Hotel Thermostat override