Fault Codes / Aux / E0

AU

Aux E0

High

Communication error outdoor/indoor

Aux E0: Communication error outdoor/indoor This fault noticeably affects operation.

Possible causes

Loose or broken signal wiring
Faulty PCB (indoor/outdoor)

Check steps

Check signal wiring between units
Check power and connectors

Affected parts

Platine (Innengerät)
Platine (Außengerät)
Signalleitung

Safety note

De-energize before wiring work.

Source: AUX Troubleshooting Guide, s.5 §(1)

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

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