ABB
Excessive Internal Heating
Charger enclosure feels very hot to the touch during or after charging, even in moderate ambient temperature.
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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 ventilation, Failed or weak cooling fan, Operation above rated current or duty cycle, Degraded thermal interface materials on heat sinks
How to Fix / Troubleshooting
Safety: Overheating can shorten component life and pose a fire risk.
- Check installation: Ensure the ABB charger has the required clearance around it as specified in the manual and is not installed in a sealed cabinet.
- Clean vents: Remove dust and debris from all ventilation openings.
- Verify fan operation: Observe whether the internal fan runs during charging. If not, the fan or its control circuit may be faulty.
- Reduce current: Lower the maximum charging current via settings to see if temperature improves.
- Service inspection: Have a technician inspect the power module, heat sinks, and thermal pads; replace the fan or power module if necessary.
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Repair Difficulty
Medium
3/5
Required Part
Cooling Fan / Power Module
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