CodeRegistry
Brands
  1. Home
  2. Daikin
  3. Altherma 3 HF
  4. Blinking red
About·Privacy·Terms

CodeRegistry — Your global library for technical solutions.

For your safety: always follow the equipment manufacturer’s official manuals. CodeRegistry is an independent help site and is not affiliated with the brands listed here.

Blinking red

Blinking red LED — Malfunction occurred

Daikin · Altherma 3 HF

What does Blinking red mean?

The status indicator light is blinking red. This means a malfunction has occurred within the system. You can get more details on the user interface.

Common Causes

  • System malfunction

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Press the left dial to open the main menu.

  2. 2

    Go to 'Malfunctioning'.

  3. 3

    View the short description and error code displayed.

  4. 4

    Press the button on the error screen to see a longer description.

Browse all codes in this manual (7)
Verified technical data. Last updated: April 2026

Related Faults

ErrorError message on screen — Malfunction detectedGurgling noisesGurgling noises after commissioning — Air in systemHeat pump failureHeat pump failure — Backup heater may take over
Source: Daikin Altherma 3 HF
Open Manual (Page 4)Search more codes in this manual