Senville IPM Protection or Current Sensing Fault

Indoor unit shows H5; system may not start or may shut down shortly after starting.

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

Overcurrent through inverter module, Shorted compressor or fan motor, Faulty current sensor on PCB, Loose or shorted wiring

Safety: High-voltage hazard. Turn off all power before inspection.

Step 1 – Inspect wiring: Check compressor and fan motor wiring for shorts to ground or between conductors.
Step 2 – Check for obvious damage: Look for burnt marks on the outdoor PCB and components.
Step 3 – Do not bypass protection: Never attempt to bypass IPM or safety circuits.
Step 4 – Call technician: H5 typically requires professional diagnosis with proper test equipment.

Professional Required 5/5

Outdoor Inverter PCB

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