Site stack (generic)
Field hub — common codes, ownership boundaries, and links into the fault database.
Contactors, SPD/RCD, coolant skids, LMS cabinets, and cable IR — OEM-agnostic site stack that fails independently of charger brand. Prove this layer before OEM RMA.
Models
Fault index (24)
CTR-WELDSite stack (generic) · Contactors & protectionFree sampleMain DC contactor welded
Main DC contactor welded — weld detect or stuck-closed feedback after high-cycle use; do not force energy. site-generic field note: keep evidence scrubbed and prove the ranked cause before module RMA on CTR-WELD.
CTR-COILSite stack (generic) · Contactors & protection solo+Contactor coil open
Contactor coil open — contactor will not pull in; coil circuit open or driver failed. site-generic field note: keep evid…
BRK-TRIPSite stack (generic) · Contactors & protection solo+Feeder breaker nuisance trip
Feeder breaker nuisance trip — pad or cabinet feeder opens under EVSE ramp; often PQ/settings not a single module. site-…
SPD-FAILSite stack (generic) · Contactors & protection solo+SPD end-of-life indicated
SPD end-of-life indicated — surge protector flag/window shows spent; replace before the next surge event. site-generic f…
RCD-TESTSite stack (generic) · Contactors & protection solo+RCD fails monthly test
RCD fails monthly test — protective device does not trip on test or will not reset; treat as protection failure. site-ge…
COOL-PUMPSite stack (generic) · Coolant skid · Liquid cooling solo+Coolant pump no flow
Coolant pump no flow — pump alarm/thermal derate with zero inferred flow on liquid-cooled skid. site-generic field note:…
COOL-LEAKSite stack (generic) · Coolant skid · Liquid cooling solo+Glycol leak at quick-connect
Glycol leak at quick-connect — visible drip or pressure loss at gun/skid QD after cable work. site-generic field note: k…
COOL-AIRSite stack (generic) · Coolant skid · Liquid cooling solo+Airlocked loop after fill
Airlocked loop after fill — pump runs but cooling ineffective until bleed removes air. site-generic field note: keep evi…
COOL-SENSSite stack (generic) · Coolant skid · Liquid cooling solo+Flow sensor false low
Flow sensor false low — cooling actually fine by IR/pressure but sensor reports low flow. site-generic field note: keep …
CAB-IRSite stack (generic) · Cables & connectors solo+Cable IR insulation fail
Cable IR insulation fail — insulation resistance below OEM limit on DC cable path. site-generic field note: keep evidenc…
CAB-PINSite stack (generic) · Cables & connectors solo+CCS pin burnt
CCS pin burnt — overheating/arcing damage on power pins from high resistance or partial latch. site-generic field note: …
CAB-LATCHSite stack (generic) · Cables & connectors solo+Latch microswitch false open
Latch microswitch false open — charger thinks latch open while mechanically latched. site-generic field note: keep evide…
CAB-STRAINSite stack (generic) · Cables & connectors solo+Strain relief broken
Strain relief broken — cable jacket control failed; conductors flex/fatigue at gland. site-generic field note: keep evid…
LMS-ZEROSite stack (generic) · LMS / power cabinet · Power cabinet / LMS solo+LMS allocates 0 A all ports
LMS allocates 0 A all ports — site controller sets zero budget; stalls idle with healthy hardware. site-generic field no…
LMS-COMSite stack (generic) · LMS / power cabinet · Power cabinet / LMS solo+LMS PLC offline
LMS PLC offline — chargers lose LMS and enter failsafe curtail/Unavailable. site-generic field note: keep evidence scrub…
CAB-FANSite stack (generic) · LMS / power cabinet · Power cabinet / LMS solo+Power cabinet fan fail
Power cabinet fan fail — thermal alarms with stopped or noisy cabinet fans on the site power cabinet, often after dusty …
CAB-BUSSite stack (generic) · LMS / power cabinet · Power cabinet / LMS solo+DC bus undervoltage
DC bus undervoltage — bus collapses under load from grid/feed or module issues. site-generic field note: keep evidence s…
CAB-PARSite stack (generic) · LMS / power cabinet · Power cabinet / LMS solo+Parallel cabinet sync fail
Parallel cabinet sync fail — paralleled cabinets refuse to share or sync DC bus. site-generic field note: keep evidence …
CAB-NACSSite stack (generic) · Cables & connectors solo+NACS handle overtemp
NACS handle overtemp — NACS path thermal derate/fault from handle or inlet heat. site-generic field note: keep evidence …
CTR-AUXSite stack (generic) · Contactors & protection solo+Aux contact feedback mismatch
Aux contact feedback mismatch — controller sees disagreement between command and aux, blocking sessions. site-generic fi…
DEP-CURTSite stack (generic) · Power cabinet / LMS solo+Depot LMS curtails on demand response
Depot LMS curtails on demand response — scheduled DR event cuts amps across the depot. site-generic field note: keep evi…
DEP-SEQSite stack (generic) · Power cabinet / LMS solo+Sequential start brownout
Sequential start brownout — too many stalls authorize together; voltage sag trips protection. site-generic field note: k…
DEP-ISLANDSite stack (generic) · BESS solo+Island mode leaves EVSE dark
Island mode leaves EVSE dark — site generation/BESS island excludes EVSE bus or opens intertie. site-generic field note:…
DEP-XFMR-TAPSite stack (generic) · Switchgear solo+Wrong tap leaves undervoltage
Wrong tap leaves undervoltage — transformer tap leaves EVSE bus low under load. site-generic field note: keep evidence s…