Fault Codes / Daikin / L4-01

VRV / Sky Air — Inverter heat sink temperature too high.

Possible causes

• Heat sink dusty / fan / high ambient.

Check steps

• Clean heat sink, check cooling fan.

Affected parts

• Inverter-PCB

Safety note

Source: Daikin VRV Service Manual — L4 sub-code

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

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