Daikin P1

High

VRV / Sky Air — Open phase / power supply imbalance.

Daikin P1: Open phase / power supply imbalance. This fault noticeably affects operation.

Possible causes

Missing phase / loose terminal.
Voltage imbalance in mains.

Check steps

Check all 3 phases & terminals (400V ±10%).
Check phase sequence & balance.

Affected parts

Phasenwächter
Sicherungen
Klemmenblock

Safety note

400V — isolate power.

Source: Daikin SM-TS3 (Simple Self-Diagnosis by Malfunction Code, resmi) veya VRV IV+ Service Manual (ManualsLib) — SM-TS3 p.4: P1 'Power voltage imbalance or inverter PCB' — RA/SkyAir/VRV checked (no Package/Chiller). Matches.

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

Look up in Enthalio →

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