Fault Codes / Daikin / P4-01

DAI

Daikin P4-01

High

VRV / Sky Air — Inverter heat sink thermistor fault.

Daikin P4-01: Inverter heat sink thermistor fault. This fault noticeably affects operation.

Possible causes

Thermistor open/short on inverter PCB.

Check steps

Check inverter thermistor / replace PCB.

Affected parts

Inverter-PCB

Safety note

High voltage! Let capacitors discharge.

Source: Daikin VRV Service Manual — P4 sub-code

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

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