PCB Care

Daikin UA Error Code

Failure of Transmission Between Indoor and Outdoor Unit.

ac
Failure of Transmission Between Indoor and Outdoor Unit

Cause: Communication failure between indoor and outdoor units

How to fix: Check communication wiring and PCB connections

ac
Indoor/Outdoor Unit Combination Fault

Cause: Indoor and outdoor units are incompatible

How to fix: Check model compatibility and wiring connections

Daikin boards that may fix UA

If the board is the cause, these refurbished Daikin boards are in stock. Match the part number before you order.

Other Daikin codes

00A1A5A6C4C9E1E5E6E7E8F3