Red 7 Flashes, Green 3 Flashes (Single System) — High Pressure

What does Red 7 Flashes, Green 3 Flashes mean?

The red LED flashes seven times and the green LED flashes three times on the indoor unit. This indicates that the refrigeration system is operating under excessively high pressure.

• Overcharged refrigerant system.
• Dirty outdoor heat exchanger (condenser coil).
• Outdoor fan motor malfunction, leading to poor heat rejection.
• Restricted airflow or blockages in the refrigeration lines.

Click steps to track your progress.

1. 1

   Turn off the unit immediately at the circuit breaker to prevent damage.

2. 2

   Ensure the outdoor unit's coil is clean and free of debris, which can impede airflow.

3. 3

   Check that nothing is obstructing the outdoor fan blades.

4. 4

   This fault typically requires a professional HVAC technician to diagnose and rectify refrigerant levels or system blockages.