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  3. SHB 20
  4. Additional heat blocked symbol
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Additional heat blocked symbol

Additional heat blocked symbol — Auxiliary heat prevented from running

Nibe · SHB 20

¿Qué significa Additional heat blocked symbol ?

This symbol indicates that the additional heat source in the system is blocked from operating, typically due to mode selection, scheduling, or alarms.

Causas comunes

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

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  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 additional heat operation.

Ver todos los códigos en este manual (15)
Datos técnicos verificados. Última actualización: April 2026

Fallas relacionadas

Alarm bell appearsAlarm bell appears on display — System malfunction alertCompressor blocked symbolCompressor blocked symbol — Compressor prevented from runningCooling active symbolCooling active symbol — Cooling function is currently enabled
Fuente: Nibe SHB 20
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