Red 2 Flashes, Green 4 Flashes (Single System) — Indoor Heat Exchanger Sensor Error

What does Red 2 Flashes, Green 4 Flashes mean?

The red LED flashes two times and the green LED flashes four times on the indoor unit. This error indicates a problem with the sensor located on the indoor heat exchanger.

• Faulty or disconnected heat exchanger sensor.
• Wiring issue leading to the sensor.
• A problem with the indoor unit's printed circuit board (PCB).

Click steps to track your progress.

1. 1

   Power off the air conditioning unit from the main power supply.

2. 2

   Wait a few minutes, then turn the power back on to attempt a system reset.

3. 3

   If the error continues, it's advisable to have a qualified technician inspect the sensor and wiring connections.

4. 4

   Avoid attempting to access internal components without proper training and tools.