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HIGH ROOM TEMPERATURE

HIGH ROOM TEMPERATURE — Rooms are too warm

NIBE · S2125 Air/Water Heat Pump

What does HIGH ROOM TEMPERATURE mean?

The room temperature is higher than desired, often due to incorrect settings in the indoor module or control module.

Common Causes

  • Incorrect settings in the indoor module or control module for heating.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check and adjust heating settings in the indoor module or control module to a lower target temperature (refer to its Installer Manual).

  2. 2

    Ensure that external controls, if any, are not overriding the intended temperature settings.

  3. 3

    Verify any connected thermostats are functioning correctly and not stuck in an 'on' position.

  4. 4

    Consider activating cooling if the system supports it and conditions allow.

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

Related Faults

Communication fault to Inverter 254Alarm 254 (or 264, 203) Communication fault to Inverter — Inverter unpowered or brokenCompressor speed too low 354Alarm 354 (or 503, 186) Compressor speed too low — Inverter safety function reduces compressor speedContinuous light CPULED: CPU Continuous light — CPU is not running correctly
Source: NIBE S2125 Air/Water Heat Pump
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