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Red 5 Flashes, Green 5 Flashes

Red 5 Flashes, Green 5 Flashes (Single System) — Compressor Failure

Fujitsu · Air Conditioners

What does Red 5 Flashes, Green 5 Flashes mean?

Both the red and green LED lights on the indoor unit flash five times simultaneously. This is a critical error indicating a failure or malfunction of the compressor in the outdoor unit.

Common Causes

  • Compressor mechanical failure.
  • Electrical fault within the compressor motor.
  • Overheating or lubrication issues in the compressor.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Immediately turn off the air conditioner at the main circuit breaker.

  2. 2

    Do not attempt to restart the unit, as this could cause further damage.

  3. 3

    Contact a certified HVAC technician for a detailed diagnosis and repair or replacement of the compressor.

  4. 4

    Ensure the outdoor unit has adequate airflow and is free from debris.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

AFM Filter Error (AUY, ABY & AWY)Red Blinks, Green 12 Pulses, Yellow Off (AUY, ABY & AWY) — Active Filter Module ErrorAir Sensor Closed (AUY, ABY & AWY)Red 2 Pulses, Green Blinks, Yellow Blinks (AUY, ABY & AWY) — Air Sensor Closed Circuit (Short)Air Sensor Open (AUY, ABY & AWY)Red 2 Pulses, Green Blinks, Yellow Off (AUY, ABY & AWY) — Air Sensor Open Circuit
Source: Fujitsu Air Conditioners
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