OPERATION INDICATOR lamp blinks at 0.5-second interval — Indoor or outdoor unit is abnormal

What does OPERATION INDICATOR lamp blinks at 0.5-second interval mean?

The left lamp of the OPERATION INDICATOR on the indoor unit blinks quickly, with a beep at the same timing as the blink. This indicates a general abnormality in either the indoor or outdoor unit.

• General fault in either the indoor or outdoor unit.
• Abnormal condition has occurred and is memorized.

Click steps to track your progress.

1. 1

   Check if the left lamp of the OPERATION INDICATOR lamp stays ON for 3 seconds before blinking. If it does, the outdoor unit is abnormal.

2. 2

   If the lamp does not stay ON for 3 seconds, the indoor unit is abnormal.

3. 3

   Proceed to identify the specific blinking pattern to pinpoint the exact failure mode by referring to the indoor or outdoor unit failure mode recall functions.