7-time blink 2.5 seconds OFF — Low discharge temperature protection

What does 7-time blink 2.5 seconds OFF mean?

The outdoor unit LED blinks 7 times with a 2.5-second pause. This indicates that the discharge temperature thermistor has read 50°C or less for 20 minutes, triggering low discharge temperature protection.

• LEV (Linear Expansion Valve) malfunction
• Refrigerant circuit issue
• Incorrect refrigerant amount

Click steps to track your progress.

1. 1

   Turn off the air conditioner at the main circuit breaker.

2. 2

   Wait for a few minutes, then restore power and try to operate the unit.

3. 3

   If the error reoccurs, a qualified technician should check the refrigerant circuit and refrigerant amount, and inspect the LEV.