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Compressor blocked symbol

Compressor blocked symbol — Compressor prevented from running

Nibe · SHB 20

What does Compressor blocked symbol mean?

This symbol appears when the compressor in the outdoor unit is intentionally blocked from operating, often due to selected operating modes or alarms.

Common Causes

  • Selected operating mode blocks the compressor
  • Scheduled blocking in menu 4.9.5
  • An active alarm is blocking the compressor

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the selected operating mode in menu 4.2.

  2. 2

    Review scheduled blocking settings in menu 4.9.5.

  3. 3

    Check the alarm log in menu 3 for any active alarms that might be causing the blockage.

  4. 4

    If necessary, reset alarms or adjust settings to allow compressor operation.

Browse all codes in this manual (15)
Verified technical data. Last updated: April 2026

Related Faults

Additional heat blocked symbolAdditional heat blocked symbol — Auxiliary heat prevented from runningAlarm bell appearsAlarm bell appears on display — System malfunction alertCooling active symbolCooling active symbol — Cooling function is currently enabled
Source: Nibe SHB 20
Open Manual (Page 43)Search more codes in this manual