E04
GoCable
Line Voltage Out of Range
Display shows E04 and charging stops or never starts; often associated with wiring issues.
Advertisements
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.
Advertisements
Possible Causes
Supply voltage too low or too high, Loose line or neutral connection at terminal block, Undersized or excessively long supply wiring causing voltage drop, Faulty internal voltage sensing circuit on control board
How to Fix / Troubleshooting
Safety warning: Work on mains wiring must be performed with power OFF at the main breaker and ideally by a qualified electrician.
- Check supply breaker and wiring size: Confirm the GoCable charger is on a dedicated circuit with the correct breaker rating and wire gauge per installation manual.
- Tighten terminal block connections: With power OFF and cover removed, inspect the line (L1/L2) and neutral (if used) terminals. Tighten any loose screws and look for discoloration or melting.
- Measure supply voltage: Using a multimeter (by a qualified person), measure voltage at the input terminals while the charger is idle and under load. Ensure it is within the specified range (typically 208–240 V for Level 2).
- Check for shared loads: Ensure no large appliances are sharing the same circuit, causing voltage sag when they start.
- If voltage is stable but E04 persists: The internal voltage sensing circuit on the main control board may be faulty and require board replacement.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Main Control Board
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements