Fault Codes / Daikin / E9-01

High

VRV / Sky Air — Electronic expansion valve (Y1E) error.

Possible causes

• EXV Y1E stuck / faulty initialisation.

Check steps

• Check EXV Y1E operation & init.

Affected parts

• Expansionsventil (Y1E)

Safety note

Source: Daikin SM-TS3 (Simple Self-Diagnosis by Malfunction Code, resmi) veya VRV IV+ Service Manual (ManualsLib) — ManualsLib p.69: E9-01 (grouped with 05,08) = 'Electronic Expansion Valve (Y1E) Malfunction'. Matches claimed meaning.

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

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