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Gurgling noises

Gurgling noises after starting — Air in the system

Daikin · Altherma 3 H HT W

What does Gurgling noises mean?

The system is making gurgling sounds, which usually means there is air trapped within the heating system. This can affect performance.

Common Causes

  • Air trapped in the heating system pipes or components

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check if any error codes are displayed on the unit that might relate to system pressure or flow.

  2. 2

    Contact your installer to perform a system air purge.

  3. 3

    The installer may need to adjust hydraulic balancing or pump settings if purging air doesn't resolve the noise.

Browse all codes in this manual (11)
Verified technical data. Last updated: April 2026

Related Faults

Blinking blue LEDBlinking blue LED — Unit is in standby modeBlinking red LEDBlinking red LED — An error has occurredContinuous blue LEDContinuous blue LED — Unit is operating
Source: Daikin Altherma 3 H HT W
Open Manual (Page 56)Search more codes in this manual