H5
Kelvinator
IPM (Intelligent Power Module) / Inverter Module Protection
Kelvinator inverter split AC shows H5 and does not start the outdoor unit.
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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 IPM on outdoor PCB, overcurrent in compressor circuit, poor heat sinking of inverter module, power surge damage
How to Fix / Troubleshooting
Safety: High-voltage DC is present on inverter boards. Only qualified personnel should work on them.
User actions:
- Power reset: Turn off power for at least 15 minutes to allow capacitors to discharge, then restore power and test.
- Check ventilation: Ensure the outdoor unit vents are not blocked and that the PCB compartment is not clogged with dust.
Technician actions:
- Test the IPM and associated components on the outdoor PCB.
- Check compressor insulation and winding resistance.
- Replace the outdoor inverter PCB if the IPM is faulty.
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Repair Difficulty
Professional Required
5/5
Required Part
Outdoor Inverter Power PCB (IPM Module)
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