E05 — EEPROM Abnormality

What does E05 mean?

This error indicates a problem with the EEPROM (Electrically Erasable Programmable Read-Only Memory) in the indoor unit, suggesting an internal communication or data storage issue.

• Internal fault with the indoor unit's EEPROM.
• A temporary software or electrical glitch.
• Damage to the indoor unit's circuit board.

Click steps to track your progress.

1. 1

   Turn off the main power to the Haier unit at the circuit breaker.

2. 2

   Wait for at least 30 seconds.

3. 3

   Restore power to the unit and observe if the error clears.

4. 4

   If the error persists, contact a qualified service technician as this indicates an internal hardware fault.