3-time blink 2.5 seconds OFF — Discharge temperature overheat protection

What does 3-time blink 2.5 seconds OFF mean?

The outdoor unit LED blinks 3 times with a 2.5-second pause. This indicates that the discharge temperature thermistor exceeded 116°C, causing the compressor to stop. The compressor can restart when the temperature drops below 100°C.

• Refrigerant circuit issue
• Incorrect refrigerant amount (too little or too much)
• LEV (Linear Expansion Valve) malfunction

Click steps to track your progress.

1. 1

   Ensure the outdoor unit is not obstructed by debris or plants, allowing proper airflow.

2. 2

   Turn off the power to the unit at the circuit breaker, wait for 5-10 minutes for cooling, then restart.

3. 3

   If the problem continues, a qualified technician should check the refrigerant circuit and refrigerant amount.