H3
GE
Compressor Overload Protection / High Temperature
GE heat pump air conditioner shows H3 and stops heating or cooling
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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
Blocked condenser airflow, Failed condenser fan motor, Overcharged or undercharged refrigerant, Compressor internal fault, High ambient temperature with poor ventilation
How to Fix / Troubleshooting
Safety: Unplug the unit. Compressor and lines may be very hot.
Homeowner checks:
- Clear airflow: Ensure the outdoor/condenser side has adequate clearance and is not blocked.
- Clean condenser coil: Remove cabinet and clean fins carefully.
- Verify fan: Confirm the condenser fan runs whenever the compressor is on. Replace the fan motor if it does not start or is noisy/seized.
If H3 persists:
- Professional diagnosis: A technician should check compressor current draw, refrigerant charge, and internal overload. Compressor or sealed system repairs require specialized tools and certification.
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Repair Difficulty
Professional Required
5/5
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