E201 (Red ON, Green Blink, Yellow OFF) — Indoor unit quantity mismatch

What does E201 mean?

The outdoor unit's PCB LED displays E201 when the number of indoor units connected does not match the outdoor unit's configuration settings. This indicates an issue with system setup.

• Incorrect indoor unit quantity setting in the outdoor unit
• Improper system configuration

Click steps to track your progress.

1. 1

   Verify that the number of indoor units connected to your system matches the specified design.

2. 2

   Consult your installation manual to confirm the correct indoor unit quantity setting for your outdoor unit.

3. 3

   Power cycle the outdoor unit by turning off its main circuit breaker for at least 30 seconds, then restore power.

4. 4

   If the error persists, contact a qualified technician to check the configuration settings on the outdoor unit's PCB.