Hydraulic Indoor Unit LED2 (Green) 10 Flashes, LED1 (Red) 1 Flash - Discharge temperature protection

What does LED2 10 Flashes, LED1 1 Flash mean?

This indicates that the discharge temperature has exceeded safe limits, triggering a protective shutdown. The outdoor unit may also show '11 Flashes' for discharge temperature protection (permanent stoppage) after pressing the ENTER switch.

• Low refrigerant charge.
• Airflow restriction over the outdoor coil.
• Faulty discharge thermistor or control.

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

   Ensure the outdoor unit is clear of obstructions and has good airflow.

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 levels and system performance.