Indoor unit shows P0 and the compressor does not start or stops quickly.

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

Low or high AC supply voltage, Faulty PFC circuit on outdoor PCB, Loose power terminals, Failing DC bus capacitors

Safety first: Turn off power and do not touch inverter components without proper training.

Check supply voltage: Have a qualified person measure line voltage at the outdoor unit. Correct any supply issues (loose breakers, undersized wiring).
Inspect terminals: Tighten all main power terminals in the outdoor unit.
Visual PCB check: Look for bulged capacitors or burnt components on the inverter board.
Professional repair: P0 usually requires PCB-level repair or replacement by a technician.

Professional Required 5/5

Outdoor Inverter PCB

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