Daikin J2

High

VRV / Sky Air — Current sensor (CT) fault.

Daikin J2: Current sensor (CT) fault. This fault noticeably affects operation.

Possible causes

Current transformer/sensing faulty.
Wiring/connector loose.

Check steps

Check connector & inverter PCB.
Check supply.

Affected parts

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.4: 'J2 Malfunction of current sensor of compressor' — exact match.

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