Display 404 — Outdoor Unit Overload Protection

What does 404 mean?

This error indicates the outdoor unit has become overloaded during safety start or normal operation, triggering protection.

• Electrical issue causing high current draw
• Mechanical problem with a component
• Voltage supply problem

Click steps to track your progress.

1. 1

   Check the electrical supply voltage to ensure it is within the specified range.

2. 2

   Ensure the outdoor unit's fan is rotating freely and not obstructed.

3. 3

   Reset the unit by turning off the power for 30 seconds and then turning it back on.

4. 4

   If the overload condition persists, a technician should inspect the unit for mechanical or electrical faults.