E05
Electrify America
Overcurrent / Output Overload Fault
E05 appears and charging stops shortly after starting; may occur intermittently under high load.
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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
Incorrect current setting in charger configuration, Shorted output cable conductors, Partially welded contactor causing high resistance, Faulty current sensor (Hall effect or shunt)
How to Fix / Troubleshooting
Safety first: Overcurrent can overheat wiring. If you smell burning or see discoloration, shut off power immediately and do not reuse until inspected.
- Step 1 – Verify settings: Using the Electrify America app or local interface, confirm the maximum current setting matches the circuit rating (e.g., 40 A on a 50 A breaker). Reduce the setting and test again.
- Step 2 – Cable inspection: Check the entire length of the output cable for hot spots, bulges, or melted insulation after a failed charge attempt.
- Step 3 – Terminal check (power OFF): Open the enclosure and inspect all high‑current terminals (line, neutral if present, and output) for looseness or signs of arcing. Retorque to manufacturer specifications.
- Step 4 – Current sensor connection: Locate the current sensor (Hall ring or shunt) on the output. Ensure its connector to the control board is secure and free of corrosion.
- Step 5 – Test with lower current: Set the charger to a significantly lower current (e.g., 16 A) and attempt a charge. If E05 disappears at low current but returns at higher current, suspect marginal wiring, contactor, or breaker.
- Step 6 – Replace damaged parts: If the current sensor is faulty or the contactor shows heat damage, replace with Electrify America‑approved components.
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Repair Difficulty
Hard
4/5
Required Part
Output Current Sensor or Main Power Contactor
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