P0 displayed; unit may limit output or stop intermittently.

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.

Possible Causes

Unstable mains supply, Loose power connections, Faulty PFC (power factor correction) circuit, Failing inverter capacitors

Safety: High voltage DC present on the inverter. Only perform external checks.

Check mains supply: Ensure the supply voltage is within the range on the rating plate. Avoid sharing the circuit with heavy loads that cause voltage dips.
Inspect terminals: With power off, check that all power terminals in the outdoor unit are tight and free of corrosion.
Power reset: Turn off power for 10–15 minutes, then restart.
If P0 recurs frequently: The inverter PCB or PFC circuit may be failing and should be replaced by an AEG technician.

Professional Required 5/5

Outdoor Power/Inverter PCB

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