EVBox

EVBox — field brand hub

EVBox Livo AC chargers appear on workplace and fleet Level 2 sites, often with load-balancing groups. Ownership is the unit (RCD, cable lock, OCPP stack) plus site load-manager behavior — not a DC cabinet. Confirm LMS/group policy before calling the charger dead when MeterValues sit at 0 A.

When this OEM shows up

Expect nuisance RCD trips, cable lock stuck, OCPP disconnects, and load-balance commands that drive the stall to 0 A while the unit looks “online.” Unit owns RCD, lock actuator, and local controller. Site/ops owns load-balance setpoints and backhaul. Electrician owns PE and feeder.

How faults present

• Local UI/LEDs: RCD trip, lock error, fault.
• OCPP: disconnect / Faulted; or Available with MeterValues at 0 A under load balance. Faulted path: /guides/ocpp-faulted-triage. Zero-amp policy: /entries/protocol-load-01-dynamic-load-management-caps-to-0-a.
• Cloud / CSMS: group load-balance setpoints and reconnect history.
• Physical: ice/debris in lock, wet glands after wash-down, antenna/Ethernet after remodel.

Ranked failure patterns

1. RCD trip nuisance — Moisture, EV leakage, aging RCD; do not keep resetting without cause. Entry: /entries/evbox-evb-lv-rcd-rcd-trip-nuisance. PE: /entries/protocol-gnd-01-ground-continuity-fail-at-dispenser.

2. Load balance zero amps — Group budget / priority, not a dead contactor. Entry: /entries/evbox-evb-lv-load-load-balance-zero-amps.

3. Livo OCPP disconnect — Backhaul/TLS/identity. Entry: /entries/evbox-evb-lv-com-livo-ocpp-disconnect. Related: /entries/protocol-ocpp-f02-heartbeat-timeout-to-csms, /entries/protocol-net-c01-dns-resolution-failure-to-csms.

4. Cable lock stuck — Mechanical debris, actuator, ice. Entry: /entries/evbox-evb-lv-lock-cable-lock-stuck.

Logs / tools

CSMS load-balance logs, StatusNotification/Heartbeat, LED photos, RCD trip count, manual lock release per OEM, DMM on PE, known-good cable if lock allows.

Escalate when

• Electrician: Persistent RCD with measured leakage/PE issues; supply faults.
• Network/ops: OCPP identity/URL; load-balance policy starving stalls.
• OEM: Lock actuator or RCD hardware after site causes cleared.

Do not replace chargers for load-balance zero-amp events.

Field checklist

1. Is MeterValues at 0 A while status stays Available? Check load-balance setpoints first.
2. Photo local UI and note RCD trip count / lock state.
3. Pull CSMS group load-balance log for the stall window.
4. If RCD: dry, inspect glands/cable, measure PE — do not keep resetting.
5. If OCPP disconnect: Heartbeat/DNS/TLS before board RMA.
6. If lock stuck: debris/ice/manual release per OEM before actuator RMA.
7. Confirm sibling Livo units in the same group still get amps.

A whole group starved of amps is ops policy, not ten dead contactors. Use /guides/ocpp-faulted-triage only when the stall is actually Faulted.