Fault 83 — BSB, Short circuit

What does 83 mean?

The system detects a short circuit on the BSB (Building System Bus) communication line, which can disrupt communication between connected system components.

• Short circuit in the BSB wiring.
• Faulty BSB component or interface.
• Incorrect wiring during installation or maintenance.

Click steps to track your progress.

1. 1

   Attempt a manual fault reset via the info key on the unit's display.

2. 2

   Power cycle the heat pump system by turning it off at the main breaker for 60 seconds, then restoring power.

3. 3

   Inspect all BSB wiring for any signs of damage, pinching, or incorrect connections.

4. 4

   If the issue persists, contact a qualified technician to diagnose the BSB line and components.