Left/Upper lamp stays on for 3 seconds without beep — Outdoor unit abnormality

What does Left/Upper lamp stays ON for 3 seconds (without beep) mean?

The left (or upper) lamp on the Operation Indicator stays on for 3 seconds without any beeps. This indicates an abnormality with the outdoor unit.

• External fault in the outdoor unit
• Component failure within the outdoor unit
• Communication issue specific to the outdoor unit

Click steps to track your progress.

1. 1

   Check the blinking pattern for the outdoor unit abnormality using the failure mode recall function.

2. 2

   Refer to the outdoor unit service manual for specific troubleshooting steps.

3. 3

   If the issue is with the outdoor unit, professional service is required.