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Cable Interference

Communication or Sensor Errors — Caused by incorrect cable routing

NIBE · F750 Heat Pump

What does Cable Interference mean?

External communication and sensor cables may experience interference or provide incorrect readings if they are routed too close to high current cables within the installation, affecting the heat pump's operation.

Common Causes

  • Communication and sensor cables laid too close to high current cables
  • Electromagnetic interference affecting sensitive low-voltage signals

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Review the cable routing for all communication and sensor cables connected to the heat pump.

  2. 2

    Ensure these cables are routed separately and not parallel to high current power cables.

  3. 3

    If possible, increase the separation distance between these cable types to minimize interference.

  4. 4

    Verify all connections for sensor and communication cables are secure.

Browse all codes in this manual (18)
Verified technical data. Last updated: April 2026

Related Faults

Additional heat blocked symbolAdditional heat blocked symbol displayed — Additional heat is not availableAlarm persists after resetRed status lamp and 'alarm' menu remain after reset — Problem not resolvedBoiler Dry Start DamageDamaged Components — Temperature limiter, thermostat, or immersion heater damaged
Source: NIBE F750 Heat Pump
Open Manual (Page 23)Search more codes in this manual