DAI

Daikin U5

Medium

Altherma — Communication user interface (MMI) ↔ indoor fault.

Daikin U5: Communication user interface (MMI) ↔ indoor fault. This fault usually isn't an immediate stop, but should be checked soon.

Possible causes

Low voltage — work carefully.

Source: Daikin Altherma 3 Installer Ref. 4P685228-1A (2022.05) §15.4

Reviewed by Anıl Güzeldemir — in the refrigeration machine room since 2006, developer of Enthalio.