DAI

Daikin UJ

Medium

VRV / Sky Air — Malfunction of transmission (accessory device)

Daikin UJ: Malfunction of transmission (accessory device) This fault usually isn't an immediate stop, but should be checked soon.

Possible causes

Defect of accessory devices
Faulty wiring

Check steps

Check the wiring between the accessory device and the system
Test the accessory device and replace if defective

Affected parts

Accessory device
Transmission wiring

Safety note

Disconnect power before working on the unit

Source: Daikin resmi servis kilavuzu (bagimsiz cift-dogrulandi) — Daikin Industries, "Simple Self-Diagnosis by Malfunction Code — After Sales Service Division (SM-TS3), RA, SkyAir, VRV, PA, and Heat Reclaim Ventilator", p.5 (system-table detail view) and p.1 (matrix view). Official PDF: https://www.daikin.com/-/media/Project/Daikin/daikin_com/products/ac/services/error_codes/pdf/sm…

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

Look up in Enthalio →

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