H5
Rheem
IPM (Inverter Power Module) Protection / Overheat
Rheem inverter air conditioner shows H5 and may shut down; outdoor unit may be unresponsive.
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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
Overheated inverter heat sink due to blocked airflow, Failed IPM module, Poor thermal contact or dried thermal compound, High ambient temperature with inadequate ventilation
How to Fix / Troubleshooting
Safety first: Turn off power and wait for the inverter section to cool.
- Clean area around unit: Ensure the outdoor unit has adequate clearance and is not enclosed in a tight space.
- Inspect heat sink: Open the panel and check that the inverter heat sink is clean and that any cooling fan (if present) operates.
- Check for board damage: Look for discoloration or cracking around the IPM. If present, the board must be replaced.
- Professional repair: IPM replacement is a specialized task. Contact a Rheem-authorized service provider.
Warning: Inverter components can retain dangerous voltages after power is removed. Do not touch heat sink or power components immediately after shutdown.
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Repair Difficulty
Professional Required
5/5
Required Part
Rheem Outdoor Inverter Power Module / Control Board
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