United Chargers
Overheating of Enclosure or Internal Components
Charger is physically hot to the touch during or after charging, even in moderate ambient temperatures.
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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 contact resistance at terminals, Undersized wiring, Blocked ventilation, Failing contactor generating excess heat
How to Fix / Troubleshooting
Safety first: Turn off power and allow the charger to cool before opening the enclosure.
- Check installation: Ensure the charger is not installed in direct sunlight without shade, or in a confined, unventilated space.
- Inspect terminals: With power OFF, check for discoloration or melted insulation at the input terminals and contactor. Retorque all connections.
- Vent cleaning: Remove dust and debris from any vents or cooling paths.
Persistent overheating suggests internal component degradation; a professional should evaluate the contactor and wiring and replace as needed.
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Repair Difficulty
Medium
3/5
Required Part
Main Power Contactor
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