DAI

Daikin L6

Critical

VRV / Sky Air — Inverter instantaneous overcurrent (AC output)

Daikin L6: Inverter instantaneous overcurrent (AC output) This fault typically halts operation and needs immediate attention.

Possible causes

Overcharge of refrigerant amount
Shortage of power supply capacity or defective compressor

Check steps

Check refrigerant charge against manufacturer specification
Measure supply voltage and compressor insulation resistance

Affected parts

Inverter PCB
Compressor

Safety note

High voltage in inverter — discharge capacitors and disconnect power before working

Source: Daikin resmi servis kilavuzu (bagimsiz cift-dogrulandi) — Daikin Industries, "Simple Self-Diagnosis by Malfunction Code," After Sales Service Division (SM-TS3), p.4 (sm-ts3_p1-6_errorcode-pdf.pdf, daikin.com/products/ac/services/error_codes). Malfunction code L6: "Inverter instantaneous overcurrent (AC output)." Supposed causes: "Overcharge of refrigerant amount / Shorta…

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

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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