Gorenje Inverter Module Temperature Protection

P4 error; unit may stop or run at reduced capacity.

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.

Possible Causes

Blocked airflow around outdoor control box, Failed inverter heatsink fan (if equipped), Dried or missing thermal compound on IPM, Faulty IPM temperature sensor

How to Fix / Troubleshooting

Safety: Turn off power before inspecting the outdoor unit.

User checks:

Ensure the outdoor unit has adequate ventilation and is not enclosed.
Clean any dust buildup on the outside of the control box area.

Technician checks:

Inspect the inverter heatsink and any dedicated cooling fan.
Verify temperature sensor readings and replace if faulty.
Service or replace the inverter PCB if overheating persists.

Repair Difficulty

Professional Required 5/5

Required Part

Outdoor Inverter PCB / IPM Temperature Sensor

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