Fujitsu Mini Split Error Code 23: How to Fix It

Q: What causes Fujitsu error code 23?

Error code 23 is caused by a faulty indoor heat exchanger outlet temperature sensor. This can result from sensor aging, loose connections, moisture damage, or debris interfering with temperature readings.

Q: Can I still use my Fujitsu mini split with error code 23?

While the unit may continue to operate, it won't maintain proper temperatures and efficiency will be reduced. It's best to fix the issue promptly to prevent further damage and ensure optimal performance.

Q: How much does it cost to fix Fujitsu error code 23?

If you replace the sensor yourself, costs range from $15-50 for the part. Professional repair typically costs $150-300 including labor, depending on your location and the specific model.

Q: How do I reset Fujitsu error code 23?

After fixing the underlying sensor issue, you can typically reset the error by turning off the system for 5 minutes, then turning it back on. Some models require holding specific remote control buttons - consult your manual for the exact reset procedure.

Q: Will error code 23 damage my Fujitsu mini split?

The error itself won't cause immediate damage, but ignoring it can lead to inefficient operation, increased energy costs, and potential strain on other system components over time.

Abstract

Fujitsu mini split error code 23 indicates a malfunction with the indoor heat exchanger outlet temperature sensor. This sensor monitors the temperature of air leaving the indoor coil to ensure proper system operation and efficiency. When this sensor fails or sends incorrect readings, your system may not heat or cool properly.