J6
Daikin
Compressor Motor Lock / Position Detection Error
Daikin system shows J6; compressor may not start or may stop quickly
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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
Locked scroll or rotary compressor, Faulty compressor position sensor (for some inverter models), Defective inverter IPM, Low supply voltage
How to Fix / Troubleshooting
Safety first: High-voltage inverter diagnostics must be done by qualified technicians only.
Technician overview:
- Check compressor mechanical condition (current draw, noise, vibration).
- Test compressor windings and insulation.
- Verify inverter output waveforms and replace IPM or compressor as needed.
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Repair Difficulty
Professional Required
5/5
Required Part
Compressor Assembly / Inverter Module
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