Red 7 Flashes, Green 5 Flashes (Single System) — Pressure Switch Failure

What does Red 7 Flashes, Green 5 Flashes mean?

The red LED flashes seven times and the green LED flashes five times on the indoor unit. This indicates a failure or abnormal reading from the pressure switch, which monitors refrigerant pressure.

• Faulty pressure switch.
• Loose or damaged wiring to the pressure switch.
• Actual high or low pressure condition causing the switch to trip.

Click steps to track your progress.

1. 1

   Turn off the air conditioning unit from the main electrical supply.

2. 2

   Wait for approximately 30 seconds before re-energizing the unit.

3. 3

   Ensure the outdoor unit is clear of obstructions and the coils are clean.

4. 4

   If the error persists, a qualified technician will need to test the pressure switch and refrigerant system.