Red 3 Flashes, Green 2 Flashes (Single System) — Outdoor Discharge Sensor Failure

What does Red 3 Flashes, Green 2 Flashes mean?

The red LED flashes three times and the green LED flashes two times on the indoor unit. This indicates a failure with the outdoor unit's discharge temperature sensor.

• Disconnected or damaged outdoor discharge sensor.
• Wiring fault between the sensor and the outdoor unit PCB.
• Malfunctioning outdoor unit control board.

Click steps to track your progress.

1. 1

   Turn off the air conditioner at the main electrical breaker.

2. 2

   Wait 30 seconds, then restore power to the unit to see if the error clears.

3. 3

   If the error persists, a qualified technician will need to inspect the outdoor unit's sensor and connections.

4. 4

   Do not attempt to open the outdoor unit without professional knowledge.