H5
Insignia
IPM (Intelligent Power Module) Protection / Inverter Overcurrent
H5 displayed; unit may not start compressor and may run fan only.
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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.
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Possible Causes
Shorted compressor, Shorted IPM module on inverter board, Loose or damaged power wiring, Overcurrent condition due to mechanical compressor fault
How to Fix / Troubleshooting
Safety first: Disconnect power. High-voltage DC is present on inverter circuits even after unplugging; capacitors can retain charge.
Steps:
- 1. Do not attempt internal inverter repair: Component-level repair of the IPM is not recommended for DIYers.
- 2. Visual check: Inspect the inverter board for obvious burn marks or cracked components. If present, the board must be replaced.
- 3. Wiring inspection: Ensure all compressor and power connectors are tight and undamaged.
- 4. Professional service: H5 indicates a serious inverter or compressor issue. Contact a qualified technician to test compressor windings and replace the inverter module or compressor as needed.
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Repair Difficulty
Professional Required
5/5
Required Part
Inverter Power Module
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