Daikin | Split/ Multi Split

Error Code P4

Troubleshooting guide for the Daikin Split/ Multi Split system fault P4.

Disclaimer: This information is for general reference. Error codes can vary by model and production year. Always refer to your machine's specific manual and the information printed on the unit itself.

System Diagnosis

Malfunction of radiation fin temperature sensor

Potential Causes & Solutions

  • Defective radiation fin temperature thermistor.
  • Defective inverter PCB.
  • Defective INV. compressor.
  • Defective fan motor.

Diagnose with Confidence

Use the ACLogics AI assistant to walk through this error code step-by-step.

Get the App

Included in Diagnosis Workflow

1

Ask

Upload nameplate & symptoms

2

Diagnose

AI identifies error P4

3

Report

Generate professional PDF