P0
Klimaire
Inverter Module / DC Bus Voltage Protection
Indoor unit displays P0 and the compressor may not start or may run at limited capacity.
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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
Low or unstable AC supply voltage, Faulty PFC (power factor correction) circuit on outdoor PCB, Loose power connections, DC bus capacitor failure
How to Fix / Troubleshooting
Safety first: High-voltage DC is present on the inverter board. Only trained personnel should measure or service these circuits.
- Step 1 – Check supply voltage: Have a qualified person measure line voltage at the outdoor disconnect. Ensure it is within Klimaire's specified range.
- Step 2 – Inspect power wiring: With power OFF, tighten all line and ground connections at the outdoor unit.
- Step 3 – Power reset: Turn OFF power for 10 minutes, then restore and test.
- Step 4 – Board replacement (pro): If P0 persists with correct supply voltage, the outdoor inverter PCB may need replacement.
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Repair Difficulty
Professional Required
5/5
Required Part
Outdoor Inverter Power Board
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