Indoor unit 16-time blink, Outdoor unit 1-time blink — Outdoor refrigerant system abnormality (Recall Function)

What does Indoor unit 16-time blink / Outdoor unit 1-time blink mean?

The indoor unit's upper lamp blinks 16 times and the outdoor P.C. board LED blinks 1 time. This indicates a problem in the outdoor refrigerant system, such as a closed valve or air trapped in the circuit. This is detected based on temperature sensed by thermistors and compressor current.

• Refrigerant gas leak in connecting piping
• Closed stop valve
• Air trapped in the refrigerant circuit

Click steps to track your progress.

1. 1

   Turn off the air conditioner at the main circuit breaker.

2. 2

   Check the stop valve to ensure it is fully open.

3. 3

   Visually inspect the refrigerant piping for any signs of leaks or damage.

4. 4

   If the issue persists, a qualified technician should check for gas leaks and inspect the outdoor refrigerant circuit.