F3
Daikin
Discharge Pipe Temperature High
Daikin system stops with F3; often in heating mode
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Blocked outdoor coil, Low refrigerant flow due to EEV issue, Overcharged refrigerant, Faulty discharge pipe thermistor
How to Fix / Troubleshooting
Safety first: Only a qualified technician should work on the refrigerant circuit. Turn off power before cleaning coils.
User steps:
- Clean outdoor coil and ensure good airflow.
Technician tasks:
- Check discharge pipe thermistor resistance and replace if out of spec.
- Verify EEV operation and refrigerant charge.
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Repair Difficulty
Professional Required
5/5
Required Part
Discharge Pipe Thermistor
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