F12 / Outdoor LED1 flashes 1 time — Outdoor EEPROM failure

What does F12 mean?

The EEPROM (Electrically Erasable Programmable Read-Only Memory) on the outdoor unit's main board has a malfunction, affecting critical operational data storage.

• Outdoor PCB failure

Click steps to track your progress.

1. 1

   Turn off the air conditioner at the main power switch or circuit breaker.

2. 2

   Wait for at least 30 seconds, then turn the power back on.

3. 3

   If the error reappears, this indicates a potential hardware issue.

4. 4

   Contact a qualified technician to inspect or replace the outdoor PCB.