What Is Daikin Error Code U4? How To Fix Daikin Error Code U4?
by Suganya
Updated Sep 11, 2023
What Is Daikin Error Code U4?
Error code U4 on a Daikin air conditioner is a fault indication that there is a malfunction in the compressor. The error code typically appears on the display panel of the air conditioner, alerting the user that there is an issue that needs to be addressed. If you see this error code, it's important to take immediate action to diagnose and repair the issue, as the malfunction can affect the performance and efficiency of the air conditioner. A professional HVAC technician should be consulted to diagnose and repair the issue.
Causes Of Daikin Error Code U4
The error code U4 on a Daikin air conditioner is typically caused by one of the following issues:
Power supply problem: If the power supply to the air conditioner is interrupted or there is a problem with the power cord, this can cause the U4 error code to be displayed.
Compressor wiring issue: If the wiring to the compressor is loose or damaged, this can cause the U4 error code to be displayed.
Outdoor unit fan motor malfunction: If the outdoor unit's fan motor is not running properly or if there are obstructions blocking the airflow, this can cause the U4 error code to be displayed.
Other malfunctions: There could be other malfunctions in the air conditioner that could cause the U4 error code to be displayed, such as problems with the compressor or control board.
It's important to note that these are only some of the potential causes of the U4 error code and that a professional HVAC technician should be consulted to diagnose and repair the issue.
How To Fix Daikin Error Code U4?
Step 1. Check the power supply:
Step 2. Check the compressor's wiring:
Step 3. Check the outdoor unit's fan motor:
Step 4. If the above steps do not resolve the issue:
Daikin U4 Error Code - FAQs
Error code U4 on a Daikin air conditioner is a fault indication that there is a malfunction in the compressor.
Check the above article to fix the error