What It Means
Malfunction of low pressure sensor.
Daikin Chiller
Daikin Chiller Error Code JC
Troubleshooting guide for the Daikin Chiller system fault JC.
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Possible Causes
- Defective connector contact.
- Connection of high pressure sensor in mistake for low pressure sensor.
- Defective low pressure sensor.
- Defective outdoor unit PCB.
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 low pressure sensor
All Recorded Causes
Defective connector contact Connection of high pressure sensor in mistake for low pressure sensor Defective low pressure sensor Defective outdoor unit PCB
Verify Before Replacing Parts
- Confirm the exact Daikin model family and chiller context before acting on a generic code description.
- Verify airflow first, then confirm operating pressures and temperature relationship before adjusting charge, since defective connector contact.
- Look for restrictions, iced coils, or dirty heat-transfer surfaces that can mimic a charge problem, and separately confirm connection of high pressure sensor in mistake for low pressure sensor.
- After the correction, run the system long enough to confirm the chiller fault does not return under normal load.
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