Red Blinks, Green Blinks, Yellow Blinks (AUY, ABY & AWY) — Outdoor PCB Failure

What does OD PCB Fail (AUY, ABY & AWY) mean?

All three LEDs (Red, Green, Yellow) are blinking. This indicates a failure of the Printed Circuit Board (PCB) in the outdoor unit.

• Electrical fault in the outdoor unit.
• Exposure to moisture or extreme temperatures.
• Component failure on the outdoor PCB.

Click steps to track your progress.

1. 1

   Immediately turn off the power to the entire air conditioning system at the circuit breaker.

2. 2

   Wait for several minutes, then restore power.

3. 3

   If the lights continue to blink in this pattern, it signifies a persistent outdoor PCB issue.

4. 4

   Professional repair or replacement of the outdoor PCB by an HVAC technician is required.