E20 — General Outdoor Unit Abnormality

What does E20 mean?

This code indicates a general malfunction or abnormal condition within the outdoor unit, without specifying a particular component.

• An unidentified issue within the outdoor unit.
• Intermittent electrical fault.
• System requires a reset.

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 or reappears, contact a qualified service technician.