Unit shows H5 and compressor does not start

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

Shorted compressor, Shorted outdoor fan motor, Faulty IPM (Intelligent Power Module) on PCB, Wiring short to ground

Safety first: Turn OFF power and do not attempt repeated restarts.

Step 1 – Inspect wiring: Look for obvious shorts, burnt wires, or melted insulation in the outdoor unit.
Step 2 – Isolate loads (technician): A technician should disconnect the compressor and fan motor to test each separately for shorts to ground.
Step 3 – Replace faulty component: Replace the shorted compressor, fan motor, or IPM module/PCB as indicated by tests.

Warning: H5 indicates serious electrical faults; continued operation risks fire or further damage.

Professional Required 5/5

Intelligent Power Module (IPM) on Outdoor PCB

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