E458/E475 (Red OFF, Green OFF, Yellow ON) — Outdoor unit BLDC Fan 1 or Fan 2 error

What does E458/E475 mean?

The outdoor unit's PCB LED displays E458 or E475 when there is a malfunction detected in either Fan 1 (E458) or Fan 2 (E475) of the outdoor unit's Brushless DC (BLDC) motor.

• Outdoor fan motor malfunction
• Fan blade obstruction (debris, ice)
• Faulty fan motor wiring or control board

Click steps to track your progress.

1. 1

   Turn off the main power to the outdoor unit at the circuit breaker.

2. 2

   Carefully inspect the outdoor unit's fan blades for any obstructions like leaves, twigs, or ice. Gently remove any debris.

3. 3

   Manually try to spin the fan blades to check for resistance (ensure power is off first).

4. 4

   Restore power and attempt to restart the system. If the error persists, contact a qualified technician to inspect the fan motor.