E1
Daikin
Outdoor PCB or Power Module Failure
Outdoor unit does not start; E1 error logged on Daikin controller
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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 inverter power module (IPM), Burnt components on outdoor PCB, Overcurrent event from compressor, Loose power connections
How to Fix / Troubleshooting
Safety first: This involves high voltage and high current components. Only qualified technicians should open the outdoor unit.
Technician overview:
- Inspect the outdoor PCB and IPM for burn marks or cracks.
- Check compressor winding resistance and insulation to ground.
- Verify line voltage and phase (for 3-phase units).
- Replace the outdoor PCB/IPM assembly if defective, following Daikin procedures.
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Repair Difficulty
Professional Required
5/5
Required Part
Outdoor Inverter PCB / IPM Module
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