Error 151 — Opened EEV error (2nd detection)

What does 151 mean?

The Electronic Expansion Valve (EEV) in the indoor unit is detected as being open when it should not be. This is the second detection of this issue.

• EEV is stuck in the open position
• Control system malfunction
• Refrigerant flow issue

Click steps to track your progress.

1. 1

   Check the system's refrigerant levels.

2. 2

   Inspect the EEV for any signs of obstruction or damage.

3. 3

   Ensure the control signals to the EEV are being sent correctly.

4. 4

   This error may require a service technician to diagnose and repair.