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Communication error

Communication error (NIBE Uplink) — Due to F2120 alarm translation error

NIBE · SMO 20 Control Module

What does Communication error mean?

An alarm occurring in the F2120 outdoor unit could trigger a translation error, which then incorrectly reported a communication error to the NIBE Uplink system. This false error could also affect functions like periodic increase.

Common Causes

  • Software bug causing incorrect alarm translation and false communication errors from F2120.
  • Actual communication fault between F2120 and the indoor unit/control module.
  • Interference on the communication lines.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the F2120 outdoor unit for any specific alarms or status messages on its display.

  2. 2

    Verify the communication cable between the F2120 and the indoor unit/control module is secure.

  3. 3

    Update the NIBE SMO 20 firmware to version 9303R7 or later.

  4. 4

    If the error persists, contact NIBE support or a qualified technician.

Browse all codes in this manual (54)
Verified technical data. Last updated: April 2026

Related Faults

165Alarm 165 — Low pressure climate system264Alarm 264 — Permanent communication error with inverter294Alarm 294 — Incompatible heat pump
Source: NIBE SMO 20 Control Module
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