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Low hot water temperature or no hot water

Low hot water temperature or no hot water — Check settings and supply

Nibe · SHB 20

¿Qué significa Low hot water temperature or no hot water ?

This issue can occur if the hot water system settings are incorrect, or if there are problems with the water supply or heating components.

Causas comunes

  • Filling valve for hot water is closed
  • Mixing valve set too low
  • Control module in incorrect operating mode
  • High hot water consumption
  • Low hot water setting
  • Low or no operating prioritisation for hot water

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Ensure the filling valve for the hot water is open.

  2. 2

    Adjust the mixing valve if one is installed, ensuring it is not set too low.

  3. 3

    Check the operating mode in menu 4.2 and select 'addition' if it's set to 'manual'.

  4. 4

    Wait for the hot water to heat up if there has been large consumption; consider activating temporary increased hot water capacity in menu 2.1.

  5. 5

    Increase the hot water comfort setting in menu 2.2.

  6. 6

    Increase the time for hot water prioritisation in menu 4.9.1.

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

Fallas relacionadas

Additional heat blocked symbolAdditional heat blocked symbol — Auxiliary heat prevented from runningAlarm bell appearsAlarm bell appears on display — System malfunction alertCompressor blocked symbolCompressor blocked symbol — Compressor prevented from running
Fuente: Nibe SHB 20
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