Fault database
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212 results · page 4 of 6
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 …
PAY-NFCIngenico / payment · Self/4000 family · Payment terminals solo+NFC tap intermittent
NFC tap intermittent — antenna/cable/EMI; prove with multiple cards. Field techs should correlate HMI/Cloud timestamps w…
MDM-APNSierra Wireless / Semtech · AirLink modem · Modem / cellular solo+Wrong APN after SIM swap
Wrong APN after SIM swap — classic Soft-offline after carrier change. Field techs should correlate HMI/Cloud timestamps …
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…
ALP-HYC-ISOAlpitronic · HYC300 · DC Fast ChargersFree sampleHYC isolation fault
Alpitronic Hypercharger fails isolation during CableCheck on one connector, or occasionally across the whole cabinet, most often after rain, a cable swap, or overnight condensation. Because HYC300 modules share a common coolant loop, a wet or contaminated path on one gun can occasionally present as a broader isolation issue across the bank.
ALP-HYC-MODAlpitronic · HYC300 · DC Fast ChargersEarly access pro+Module offline bank
One Alpitronic Hypercharger power module drops offline within its bank, showing up as reduced maximum kW, an imbalanced …
ALP-HYC-PAYAlpitronic · HYC300 · Payment terminals solo+Payment terminal offline
Alpitronic Hypercharger's onboard payment terminal goes offline while the energy delivery path may continue operating un…
ALP-HYC-GRIDAlpitronic · HYC300 · DC Fast Chargers solo+Grid overvoltage
Alpitronic Hypercharger trips on grid overvoltage, aborting active sessions and refusing new ones until the input voltag…
DEL-UFC-GFDelta · UFC100 · DC Fast ChargersFree sampleUFC ground fault
Delta UFC100 dispenser trips ground fault mid-session or during CableCheck, most often after rain, wash-down, or a recent cable service call. HMI banner reads Ground Fault while OCPP reports Faulted/GroundFailure; the fault can lock a single gun or take the whole cabinet Unavailable if the sensing sits upstream of the split.
DEL-UFC-COMDelta · UFC100 · DC Fast ChargersFree sampleBackend unreachable
Delta UFC100 loses its link to CSMS/cloud while the local HMI may still show Ready or Available, creating a mismatch where drivers see a working screen but the backend lists the station offline or flapping. Heartbeat gaps and delayed StatusNotification are the giveaway; sessions started locally may not sync until the link recovers.
DEL-UFC-FANDelta · UFC100 · DC Fast Chargers solo+Exhaust fan fault
Delta UFC100 exhaust fan fault raises internal cabinet temperature during high-power sessions, first showing as a derate…
DEL-UFC-LOCKDelta · UFC100 · DC Fast Chargers solo+Connector lock motor fail
Delta UFC100 connector lock motor fails to latch or release the CCS handle, leaving a session unable to start or a cable…
AUT-MC-ISOAutel · MaxiCharger DC · DC Fast ChargersFree sampleMaxiCharger isolation
Autel MaxiCharger DC fails isolation/CableCheck on one connector while the peer port on the same dual-standard unit stays healthy. Because MaxiCharger DC often pairs a CCS and NACS port from a shared cabinet, techs must confirm which physical port and which cable actually failed before assuming a cabinet-wide isolation fault.
AUT-MC-NACSAutel · MaxiCharger DC · DC Fast ChargersFree sampleNACS port latch
Autel MaxiCharger DC's NACS port latch fails to lock or won't release, either preventing a session from starting because the vehicle never confirms a locked connector, or trapping the cable in the vehicle inlet after the session ends. Drivers often report a buzzing sound or visible resistance when inserting the NACS handle.
AUT-MC-APPAutel · MaxiCharger DC · DC Fast Chargers solo+App start fails OCPP ok
Autel MaxiCharger DC app-initiated sessions fail to start while OCPP Heartbeat continues normally to the CSMS, meaning t…
AUT-MC-THERMAutel · MaxiCharger DC · DC Fast ChargersFree samplePower stage overtemp
Autel MaxiCharger DC power stage overtemp shows up as a progressive derate during sustained high-power sessions, escalating to a full Faulted stop if airflow or ambient conditions don't improve. This is most common in summer at sites with blocked intake filters, undersized clearance around the cabinet, or back-to-back long sessions with little cooldown between them.
SIE-SD-ISOSiemens · Sicharge D · DC Fast ChargersFree sampleSicharge isolation
Siemens Sicharge D reports an isolation fault on one connector path while the peer gun on the same cabinet may remain Available, and technicians must confirm whether the power cabinet or the dispenser head owns the failing measurement before opening either enclosure. Weather exposure and recent cable service are the most common triggers.
SIE-SD-LMSSiemens · Sicharge D · DC Fast ChargersEarly access pro+Cluster LMS conflict
Siemens Sicharge D cluster experiences a load-management conflict where multiple stalls fight over the site's power budg…