Daikin Chiller

Daikin Chiller Error Code E8

Troubleshooting guide for the Daikin Chiller system fault E8.

ACLogics Standardize Chiller diagnostics See the commercial workflow → Standardize Chiller diagnostics

What It Means

Overcurrent of inverter compressor.

Possible Causes

  • Defective compressor.
  • Defective inverter main circuit capacitor.
  • Defect of outdoor unit PCB.
  • Defect of power transistor.

Not sure which one it is — or if it's none of these? Try ACLogics today.

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.
New to this code? Click to see why this happens

Full Diagnosis

Overcurrent of inverter compressor

All Recorded Causes

Defective compressor Defective inverter main circuit capacitor Defect of outdoor unit PCB Defect of power transistor

Verify Before Replacing Parts

  1. Confirm the exact Daikin model family and chiller context before acting on a generic code description.
  2. Confirm board LEDs, wiring polarity, and model compatibility before replacing control boards — this Daikin fault points at defective compressor.
  3. Check for intermittent communication faults caused by connectors, moisture, or damaged harnesses, and rule out defective inverter main circuit capacitor.
  4. After the correction, run the system long enough to confirm the chiller fault does not return under normal load.

Diagnosing Chiller across a fleet?

ACLogics standardizes commercial Chiller diagnostics across your whole team — consistent steps, less guesswork on every call.

See the commercial workflow →