DAI

Daikin L8

Critical

VRV / Sky Air — Inverter overcurrent / electronic thermal protection.

Daikin L8: Inverter overcurrent / electronic thermal protection. This fault typically halts operation and needs immediate attention.

Possible causes

Compressor overload (high pressure/stiff).
Weak compressor winding/insulation.
INV PCB faulty.

Check steps

Measure winding resistance & insulation.
Check overload (pressure/condenser/fan).

Affected parts

Verdichter
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: L8 'Malfunction of overcurrent inverter compressor' — RA/SkyAir/VRV/Package/Chiller checked. Matches.

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