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83

Error 83 - BSB wire short-circuit

Fujitsu · Waterstage SuperHP Heat Pumps

What does 83 mean?

The user interface displays '83: BSB wire short-circuit', indicating a short circuit in the BSB communication wiring, which can disrupt system communication. This error typically triggers an automatic reset.

Common Causes

  • Damaged BSB communication wiring (e.g., pinched, cut).
  • Incorrect wiring connections causing a short.
  • Water ingress or debris causing a short across the wires.

Repair Steps & Checklist

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

    Visually inspect the BSB communication wiring for any cuts, pinches, or exposed conductors.

  3. 3

    Allow time for the automatic reset to occur (default 6 hours) or use the manual reset function (Line 6711) if available.

  4. 4

    Contact a qualified service technician to inspect and repair the BSB wiring.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

10Error 10 - Outdoor sensor fault100Error 100 - Two master clocks on bus102Error 102 - Clock without running supply
Source: Fujitsu Waterstage SuperHP Heat Pumps
Open Manual (Page 93)Search more codes in this manual