Fault Codes / LG / CH28

LG

LG CH28

Critical

Multi V / Split — Inverter DC voltage too high.

LG CH28: Inverter DC voltage too high. This fault typically halts operation and needs immediate attention.

Possible causes

Overvoltage / inverter PCB faulty.

Check steps

Check capacitor DC voltage (~300 V DC 1Ph / ~600 V DC 3Ph).
If OK, replace inverter PCB.

Affected parts

Inverter-PCB

Safety note

High voltage! Let capacitors discharge.

Source: LG Air Conditioning Fault Codes (offiziell, LG Electronics)

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

Look up in Enthalio →

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