L5
Daikin
Inverter Overcurrent / IPM Protection
Daikin unit stops with L5; often associated with inverter module protection
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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
Shorted compressor, Shorted IPM, Incorrect wiring, Power surge damage
How to Fix / Troubleshooting
Safety first: Do not attempt to restart repeatedly; risk of further damage. Only a technician should open the outdoor unit.
Technician tasks:
- Test compressor windings and insulation.
- Inspect IPM and outdoor PCB for damage.
- Replace faulty IPM/PCB and possibly compressor.
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Repair Difficulty
Professional Required
5/5
Required Part
Outdoor Inverter PCB / IPM
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