Fafco
Controller Overheating or Component Failure
Solar controller emits a burning smell or shows visible scorch marks inside.
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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
Overloaded pump relay, Loose high-current connections, Surge or lightning damage, Inadequate ventilation around controller
How to Fix / Troubleshooting
Safety: Immediately turn off power at the breaker. Do not continue to operate a controller that smells burnt.
- Inspect interior: After power is off, open the controller and look for burnt components, melted plastic, or charred PCB areas.
- Tighten connections: Check all line and load terminals for tightness to prevent future overheating.
- Assess damage: If any components are visibly damaged, the controller should be replaced rather than repaired in the field.
- Improve ventilation: Ensure the controller is not installed in a sealed, hot enclosure. Provide shade and airflow as recommended by Fafco.
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Repair Difficulty
Hard
4/5
Required Part
Fafco Controller Board
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