What It Means
Malfunction of transmission between indoor unit and centralized control equipment.
Daikin Packaged Unit
Daikin Packaged Unit Error Code UE
Troubleshooting guide for the Daikin Packaged Unit system fault UE.
Possible Causes
- Transmission error between optional controllers for centralized control equipment and indoor unit.
- Connector for setting main controller is disconnected.(or disconnection of connector for independent / combined use changeover switch.).
- Defective PCB for central remote controller.
- Defective indoor unit PCB.
Not sure which one it is — or if it's none of these? Try ACLogics today.
Disclaimer: This information is for general reference. Error codes can vary by model and production year. Always refer to your machine's specific manual and the information printed on the unit itself.
New to this code? Click to see why this happens
Full Diagnosis
Malfunction of transmission between indoor unit and centralized control equipment
All Recorded Causes
Transmission error between optional controllers for centralized control equipment and indoor unit Connector for setting main controller is disconnected.(or disconnection of connector for independent / combined use changeover switch.) Defective PCB for central remote controller Defective indoor unit PCB
Verify Before Replacing Parts
- Confirm the exact Daikin model family and packaged context before acting on a generic code description.
- Verify current draw, overload status, and control signal before condemning the compressor or drive, given that transmission error between optional controllers for centralized control equipment and indo….
- Look for upstream conditions such as airflow or charge issues that may be pushing the compressor into protection, and check connector for setting main controller is disconnected.(or disconnection of connector for i….
- After the correction, run the system long enough to confirm the packaged fault does not return under normal load.
Still unsure about this fault?
ACLogics walks you through Daikin Packaged Unit diagnostics step-by-step — so you confirm the cause before swapping parts.
