Error A9 (10 Green, 9 Red Flashes) — Current overload error

What does A9 mean?

The hydraulic unit's green LED flashes ten times and the red LED flashes nine times. This indicates that the system is drawing too much electrical current, triggering a protective overload shutdown.

• Over-sized load on the heat pump.
• Malfunctioning compressor or fan motor drawing excessive current.
• Electrical fault or short circuit within the unit.
• Inverter failure.

Click steps to track your progress.

1. 1

   Turn off the heat pump system at the main breaker immediately, wait for at least one minute, then attempt to restart it.

2. 2

   Check for any conditions that might be causing the unit to work excessively hard, such as extreme temperature settings or blocked vents.

3. 3

   Ensure the electrical supply to the unit is stable and the circuit breaker is correctly rated for the appliance.

4. 4

   If the error reoccurs, contact a qualified technician, as this could indicate a serious electrical or component failure.