Red Blinks, Green 9 Pulses, Yellow Off (AUY, ABY & AWY) — Outdoor Unit Compressor Temperature Sensor Failure

What does OD Unit Compressor Temp Sensor (AUY, ABY & AWY) mean?

The red LED blinks, the green LED shows 9 pulses, and the yellow LED is off. This indicates a failure of the temperature sensor specifically for the outdoor unit's compressor.

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

Click steps to track your progress.

1. 1

   Turn off the power to the air conditioning system at the main electrical panel.

2. 2

   Wait a few minutes, then restore power to allow for a system reset.

3. 3

   If the error persists, contact a qualified HVAC technician to inspect the outdoor unit's compressor and sensor.

4. 4

   Professional expertise is required for safe internal access.