Failure Recall Mode active: Operation Indicator lamp stays ON for 3 seconds then blinks 0.5s ON/OFF (no beeps) — General outdoor unit abnormality

What does Recall: 3-sec ON then 0.5-sec blink mean?

When the failure mode recall function is activated, if the indoor unit's Operation Indicator lamp first stays ON for 3 seconds without a beep, and then blinks at 0.5-second intervals, it signals a general abnormality in the outdoor unit. This helps confirm an outdoor unit fault has been memorized.

• An outdoor unit internal error has been detected and memorized.

Click steps to track your progress.

1. 1

   To activate the failure recall function, ensure the unit is powered ON. On the remote controller, press and hold both the OPERATION SELECT button and the TEMP (up arrow) button. While holding these, press the RESET button. Release the RESET button first, then continue holding the other two for another 3 seconds.

2. 2

   Confirm all indicators on the remote's LCD screen are displayed, then release all buttons. Press the OPERATE/STOP (ON/OFF) button, pointing the remote at the indoor unit.

3. 3

   Once the recall mode is active and this pattern is observed, refer to the outdoor unit service manual for specific failure mode patterns and remedies.

4. 4

   To exit the recall function, turn OFF the main power supply to the air conditioner and turn it ON again, or press the RESET button on the remote controller.