Daikin Chiller

Daikin Chiller Error Code 98

Troubleshooting guide for the Daikin Chiller system fault 98.

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What It Means

Malfunction of thermal storage brine pump.

Possible Causes

  • Actuation of thermal storage brine pump overcurrent (OC).

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 thermal storage brine pump

All Recorded Causes

Actuation of thermal storage brine pump overcurrent (OC)

Verify Before Replacing Parts

  1. Confirm the exact Daikin model family and chiller context before acting on a generic code description.
  2. Verify current draw, overload status, and control signal before condemning the compressor or drive, given that actuation of thermal storage brine pump overcurrent (OC).
  3. Look for upstream conditions such as airflow or charge issues that may be pushing the compressor into protection, and check 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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