Red Blinks, Green 3 Pulses, Yellow Off (AUY, ABY & AWY) — Outdoor Unit Pipe Sensor Failure

What does OD Unit Pipe Sensor Fail (AUY, ABY & AWY) mean?

The red LED blinks, the green LED shows 3 pulses, and the yellow LED is off. This indicates a failure of the temperature sensor on the outdoor unit's refrigerant pipe.

• Disconnected or damaged sensor.
• Wiring fault to the sensor.
• Faulty outdoor control board.

Click steps to track your progress.

1. 1

   Turn off the air conditioner at the main circuit breaker.

2. 2

   Wait a few minutes, then turn the power back on.

3. 3

   If the error persists, the outdoor unit will require inspection by a qualified HVAC technician.

4. 4

   Avoid attempting to access internal outdoor unit components without professional experience.