E474 — IPM/PFCM Temperature Sensor Error

What does E474 mean?

This error indicates a malfunction with the temperature sensor associated with the IPM (Intelligent Power Module) or PFCM (Power Factor Correction Module) in the outdoor unit, critical for power management.

• Incorrect assembly of IPM on the heatproof plate.
• Blocked inlet (restricting airflow).
• Defective IPM component.

Click steps to track your progress.

1. 1

   Turn off the air conditioner at the main power switch or circuit breaker and wait 30 seconds.

2. 2

   Check that the outdoor unit's air inlet is clear and free from any obstructions like leaves or debris.

3. 3

   Turn the power back on.

4. 4

   If the error persists, contact customer support, as a technician may need to inspect or replace internal components.