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Low room temperature

Low room temperature

NIBE · S-Series Heat Pumps

What does Low room temperature mean?

The room temperature is lower than desired or set. This can indicate an issue with heating demand, system settings, or the heating distribution.

Common Causes

  • Closed thermostats in several rooms.
  • Incorrect heating settings in the indoor module or control module.
  • Air-filled radiators/underfloor heating coils.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Set thermostats to maximum in as many rooms as possible to ensure there is a clear demand for heat.

  2. 2

    Check and adjust the heating settings in your NIBE indoor module or control module (refer to its installer manual).

  3. 3

    Bleed the heating system (radiators or underfloor heating coils) to remove any trapped air.

  4. 4

    Ensure the system pressure is within the recommended range.

Browse all codes in this manual (55)
Verified technical data. Last updated: April 2026

Related Faults

212Alarm 212 - Low lp cooling (Low low-pressure in cooling circuit)233Alarm 233 - Fan alarm from Heat Pump234Alarm 234 - Exchange sensors flow / return
Source: NIBE S-Series Heat Pumps
Open Manual (Page 40)Search more codes in this manual