H3
Chigo
Compressor Overload Protection (Thermal Trip)
Indoor unit shows H3 and compressor stops; system shuts down to protect itself.
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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
High ambient temperature and poor ventilation around Chigo outdoor unit, Blocked condenser coil, Low refrigerant causing overheating, Failing compressor with high internal friction
How to Fix / Troubleshooting
Safety first: Turn off power before cleaning or inspecting the outdoor unit.
- Step 1 – Improve ventilation: Ensure the outdoor unit has adequate clearance on all sides and is not installed in a confined space.
- Step 2 – Clean condenser coil: Gently wash the coil and remove dirt and debris.
- Step 3 – Check outdoor fan: Confirm the fan runs at full speed when cooling. Replace the outdoor fan motor or capacitor if it is slow or not running.
- Step 4 – Professional diagnosis: If H3 recurs, a technician should check refrigerant charge and compressor condition. A failing compressor may need replacement.
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Repair Difficulty
Hard
4/5
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