STATUS LED flashing 4 times repeatedly (4-blink pattern), unit will not charge any vehicle.
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.
Possible Causes
How to Fix / Troubleshooting
Safety first: Do not operate an EVSE without a verified equipment ground. Turn OFF the breaker before inspection.
- Check panel ground: Have a qualified electrician verify that the branch circuit feeding the EVSE has a continuous equipment grounding conductor back to the service panel.
- Inspect internal ground: With power OFF and cover removed, confirm that the green or bare ground wire is securely attached to the EVSE ground terminal and chassis bonding point.
- Tighten connections: Tighten the ground lug screw to manufacturer torque specs. Look for corrosion or discoloration and clean or replace the lug if necessary.
- Continuity test: Using a multimeter, measure continuity between the EVSE chassis and the service panel ground bar. High resistance or open circuit indicates a ground wiring problem that must be corrected.
Do not bypass ground detection. The EVSE must not be used until a proper equipment ground is restored and the 4-blink error clears.
Repair Difficulty
Required Part
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