E30 — High Pressure Switch HPS Abnormality

What does E30 mean?

This error indicates that the high pressure switch (HPS) has disconnected, signaling an abnormal high pressure condition in the system. If this occurs 3 times in an hour, the failure will be confirmed as unresumable.

• Excessive refrigerant charge in the system.
• Poor airflow over the outdoor coil due to blockages or dirty fins.
• A faulty high pressure switch.
• A problem with the outdoor fan.

Click steps to track your progress.

1. 1

   Turn off the unit and allow the system pressure to normalize.

2. 2

   Check that the outdoor unit fan is running freely and that there are no obstructions around the outdoor coil.

3. 3

   Restore power and restart the unit. If the error persists or recurs frequently, contact a qualified service technician.