Daikin UA

High

VRV / Sky Air — Indoor/outdoor mismatch (installation/field setting).

Daikin UA: Indoor/outdoor mismatch (installation/field setting). This fault noticeably affects operation.

Possible causes

Too many indoor units / wrong type.
Wrong field setting / address.

Check steps

Check indoor unit count/type vs design.
Check field setting & addressing.

Affected parts

Kein Ersatzteil — Einstellung/Konfiguration prüfen (DIP, Menü, Untercode)

Safety note

230V — isolate power.

Source: Daikin SM-TS3 (Simple Self-Diagnosis by Malfunction Code, resmi) veya VRV IV+ Service Manual (ManualsLib) — SM-TS3 p.5: for SkyAir/VRV/Package specifically, 'UA Improper combination of indoor and outdoor units — Excess of connected indoor units, Defective outdoor unit PCB, Mismatch of refrigerant type, Setting of outdoor unit

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

Look up in Enthalio →

Related fault codes

Outdoor PCB faulty.E1 Refrigerant shortage (low pressure / stop valvU0 Power supply defect / brief power failure.U2 Transmission error indoor/outdoor unit.U4 Low-pressure protection / LP sensor (suction bE4 Inverter compressor instantaneous overcurrent L5