P0
Camry
Inverter Module Protection / DC Bus Voltage Error
P0 displayed; compressor does not start or runs at very low speed
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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
Abnormal DC bus voltage on Camry inverter board, Faulty PFC (power factor correction) circuit, Loose DC bus connectors, Defective inverter PCB
How to Fix / Troubleshooting
Safety first: High DC voltages are present on the inverter; only trained personnel should measure or service this area.
- 1. Power reset: Turn off power for at least 15 minutes to allow DC capacitors to discharge, then restore power and test.
- 2. Inspect PCB: Look for swollen capacitors or burnt components in the DC bus area.
- 3. Check connectors: Ensure all plug-in connectors between rectifier, PFC, and IPM sections are secure.
- 4. Measure DC bus (technician): Verify that DC bus voltage is within design limits when powered.
- 5. Replace PCB: If P0 persists and supply voltage is normal, replace the outdoor inverter PCB.
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Repair Difficulty
Professional Required
5/5
Required Part
Outdoor Inverter PCB (Camry Condenser Unit)
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