Daikin Chiller

Daikin Chiller Error Code H5

Troubleshooting guide for the Daikin Chiller system fault H5.

What It Means

Malfunction of compressor motor overload thermistor.

Possible Causes

  • Defect of compressor motor overload thermistor Defective connector contact.

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.
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Full Diagnosis

Malfunction of compressor motor overload thermistor

All Recorded Causes

Defect of compressor motor overload thermistor Defective connector contact

Verify Before Replacing Parts

  1. Confirm the exact Daikin model family and chiller context before acting on a generic code description.
  2. Verify the sensor or thermistor reading against the expected range for the current operating condition, keeping in mind that defect of compressor motor overload thermistor Defective connector contact.
  3. Check the sensor harness and board connection before condemning the sensor itself; on Daikin units this is also where you'd confirm the next candidate on the list.
  4. After the correction, run the system long enough to confirm the chiller fault does not return under normal load.

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