Daikin Chiller

Daikin Chiller Error Code 90

Troubleshooting guide for the Daikin Chiller system fault 90.

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What It Means

Abnormal chilled water quantity or abnormal AXP.

Possible Causes

  • Shortage of water volume.
  • Disconnection of AXP.

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

Abnormal chilled water quantity or abnormal AXP

All Recorded Causes

Shortage of water volume Disconnection of AXP

Verify Before Replacing Parts

  1. Confirm the exact Daikin model family and chiller context before acting on a generic code description.
  2. Start with the exact model documentation and verify the full operating sequence before replacing parts, particularly around shortage of water volume.
  3. Use the listed causes as branches to confirm or eliminate with measurements, not assumptions — disconnection of AXP is a reasonable second branch.
  4. After the correction, run the system long enough to confirm the chiller fault does not return under normal load.

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