Hydraulic Indoor Unit LED2 (Green) 8 Flashes, LED1 (Red) 6 Flashes - Pressure sensor error/Pressure switch error

What does LED2 8 Flashes, LED1 6 Flashes mean?

This indicates a problem with a pressure sensor or switch in the system. The outdoor unit may also show '3 Flashes' for a general pressure sensor error, or more specifically '23 Flashes' for Discharge pressure sensor error and '24 Flashes' for Suction pressure sensor error after pressing the ENTER switch.

• Faulty pressure sensor or switch.
• Loose or damaged wiring to the sensor/switch.
• Abnormal refrigerant pressure (too high or too low).

Click steps to track your progress.

1. 1

   Turn off the main power supply to the heat pump for 30 seconds, then turn it back on.

2. 2

   If the outdoor unit ERROR LED is blinking, press the ENTER switch to reveal a more specific pressure error code (e.g., 23 or 24 flashes).

3. 3

   If the error persists, use the 'Reset HP' function (Line 6711) in the control system.

4. 4

   Contact a qualified service technician to check refrigerant pressures and sensors.