Red Blinks, Green 11 Pulses, Yellow Off (AUY, ABY & AWY) — CT Error (Current Transformer)

What does CT Error (AUY, ABY & AWY) mean?

The red LED blinks, the green LED shows 11 pulses, and the yellow LED is off. This indicates an error with the Current Transformer (CT), which measures the current flowing through the unit.

• Faulty Current Transformer sensor.
• Wiring issue to the CT sensor.
• Abnormal current detection due to internal electrical fault.

Click steps to track your progress.

1. 1

   Turn off the power to the air conditioner at the circuit breaker.

2. 2

   Wait for approximately one minute, then turn the power back on.

3. 3

   If the error persists, it points to an electrical issue within the outdoor unit.

4. 4

   Contact an HVAC professional to inspect the CT sensor and related electrical circuits.