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How do I fix a Fujitsu error code 11?

Alton Alexander
By Alton AlexanderUpdated on June 4th, 2022

Fujitsu error code 11 is a code that indicates a problem with the communication between the indoor and outdoor units of a Fujitsu ductless mini-split air conditioner. This error code can be caused by a number of things, including a problem with the wiring between the units, a problem with the outdoor unit, or a problem with the indoor unit.

Users typically search for a solution by asking about:

  • fujitsu error code = 11 fix
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1. Restart your computer and try running the program again

  1. Shut down your computer and wait 10 seconds
  2. Press and hold the power button for about five seconds
  3. When the diagnostics screen pops up, release the power button
  4. On the diagnostics screen, press F8 to start up in safe mode
  5. Run the program again and check the error message
  6. If the error message is still present, follow the instructions below to restart your computer in normal mode
  7. Restart your computer by pressing the power button and the F8 key at the same time
  8. After your computer restarts, try running the program again

2. Update your drivers and make sure all your software is up to date

There are many ways to update your drivers and software. Some software programs, such as Windows Update, will automatically search for new updates and install them when they are found. Other software programs, such as Fujitsu Update Manager, require you to manually search for and install updates. To update your drivers:

  1. In Windows Explorer, locate the driver file for the device that you want to update.

  2. Right-click the driver file and select Properties.

  3. In the Properties window, select the Update tab.

  4. In the Update tab, select the Check for updates button.

  5. Windows will search for new updates and install them if they are found. To update your software:

  6. In Windows Explorer, locate the program file for the software that you want to update.

  7. Right-click the program file and select Properties.

  8. In the Properties window, select the Update tab.

  9. In the Update tab, select the Check for updates button.

  10. Windows will search for new updates and install them if they are found.

3. Check for any corrupt or missing files

  1. On your computer, open Command Prompt (Windows) or Terminal (Mac).
  2. Type the following command: fsutil behavior query CurrentFileSystem
  3. If the output includes the phrase "Corrupt file system," you need to repair the file system. To do this, type the following command: fsutil behavior set disabled CorruptFileSystem
  4. If the output does not include the phrase "Corrupt file system," you can skip the next step.
  5. Type the following command to list the files in your computer's root directory: ls
  6. If one or more files are missing, you need to copy the file to your computer and then try the repair command again. To copy the file, type the following command: scp file_name_to_copy root_directory_on_your_computer
  7. If the file is still missing, you may need to reformat your computer's hard drive. To do this, type the following command: fsutil behavior set disabled CorruptFileSystem
  8. Type the following command to restart your computer: shutdown -r now

4. Try running the program in compatibility mode

To try running the program in compatibility mode, you will need to open the program's properties, click on the "Compatibility" tab, and check the "Run this program in compatibility mode" box.

Still not working? maybe try one of these options:

  1. Reinstall the program.