Daikin | Split/ Multi Split

Error Code C4

Troubleshooting guide for the Daikin Split/ Multi Split system fault C4.

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 liquid pipe thermistor for heat exchanger

Potential Causes & Solutions

  • Defective thermistor for liquid pipe.
  • Defective indoor unit PCB.
  • Defective connector contact.

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 C4

3

Report

Generate professional PDF