Daikin P3

High

VRV / Sky Air — Control box thermistor / abnormal direct current.

Daikin P3: Control box thermistor / abnormal direct current. This fault noticeably affects operation.

Possible causes

Control box thermistor faulty.
Rectifier/DC-link faulty.

Check steps

Check control box thermistor & connector.
Check DC-link/inverter.

Affected parts

Schaltkasten-Thermistor
Inverter-Platine

Safety note

High voltage! Let capacitors discharge.

Source: Daikin SM-TS3 (Simple Self-Diagnosis by Malfunction Code, resmi) veya VRV IV+ Service Manual (ManualsLib) — SM-TS3 p.5: P3 'Malfunction of thermistor in switch box' — RA/SkyAir/VRV/Package/Chiller checked. Matches (the 'abnormal DC' addition in researcher's note is unconfirmed extra text, not in official doc, but base fact ver

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

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