Error 64 (6 Green, 4 Red Flashes) — Active filter error

What does 64 mean?

The hydraulic unit's green LED flashes six times and the red LED flashes four times. This error indicates a problem with the active filter in the outdoor unit, which helps maintain power quality.

• Failure of the active filter module.
• Power quality issues affecting the filter's operation.
• Loose connections to the active filter board.

Click steps to track your progress.

1. 1

   Perform a complete power reset of the heat pump system by turning off the main breaker for at least 60 seconds and then turning it back on.

2. 2

   Check for any obvious signs of damage or loose wiring around the active filter board in the outdoor unit (only if you are a qualified technician).

3. 3

   Ensure that the incoming power supply is stable and within specifications.

4. 4

   If the error persists, a qualified technician should inspect or replace the active filter component.