Error 23 (2 Green, 3 Red Flashes) — Connection forbidden (series error)

What does 23 mean?

The green LED on the hydraulic unit flashes twice and the red LED flashes three times. This indicates a connection error where the system detects a forbidden series connection.

• Incorrect wiring during installation, leading to a series connection where a parallel one is expected.
• Configuration issues related to how units are interconnected.

Click steps to track your progress.

1. 1

   Turn off the heat pump system at the main breaker for at least one minute, then turn it back on.

2. 2

   Carefully review the installation manual for correct wiring configurations between system components.

3. 3

   Check all external wiring connections for proper polarity and secure fit.

4. 4

   If the issue persists, consult a qualified technician to verify the system's internal wiring and configuration settings.

5. 5

   Ensure no unauthorized or incorrect components have been added to the system.