Unit stops with P3, may be associated with outdoor PCB temperature

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

Blocked outdoor unit ventilation, Fan not cooling PCB area, Excessive ambient temperature, Failed PCB temperature sensor

Safety first: Turn OFF power before cleaning or opening the outdoor unit.

Steps:

Clear surroundings: Ensure adequate clearance around the outdoor unit for heat dissipation.
Clean coil and fan: Improve overall cooling of the unit by cleaning the coil and ensuring the fan operates correctly.
Check sun exposure: If the unit is in direct intense sunlight, consider shading (without blocking airflow).

If P3 persists: The PCB temperature sensor or heat sink contact may be faulty; professional service is required.

Hard 4/5

Outdoor Main PCB (Heat Sink / Temperature Sensor)

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