Red Blinks, Green 4 Pulses, Yellow Off (AUY, ABY & AWY) — Outdoor Unit Air Sensor Failure

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

The red LED blinks, the green LED shows 4 pulses, and the yellow LED is off. This indicates a failure of the outdoor ambient air temperature sensor.

• Disconnected or damaged outdoor air sensor.
• Wiring issue between the sensor and the outdoor unit's PCB.
• Malfunctioning sensor component.

Click steps to track your progress.

1. 1

   Power off the air conditioner at the main electrical switch.

2. 2

   Wait for 30 seconds before switching the power back on.

3. 3

   Check that the outdoor unit's sensor area is clear of obstructions.

4. 4

   If the error continues, contact a service technician to inspect and potentially replace the sensor.