Fault database
Search by code, symptom, brand, category, or connector. Full procedures gated by subscription — samples stay open.
Viewing as free
212 results · page 5 of 6
CTR-WELDSite stack (generic) · Contactors & protectionFree sampleMain DC contactor welded
Main DC contactor welded on site-generic: Site LMS / breaker / skid local indicators shows CTR-WELD. Techs see session abort or stall Unavailable until the ranked cause is cleared. Correlate Site BMS / LMS / SCADA if present before opening the cabinet.
CTR-COILSite stack (generic) · Contactors & protection solo+Contactor coil open
Contactor coil open on site-generic: Site LMS / breaker / skid local indicators shows CTR-COIL. Techs see session abort …
BRK-TRIPSite stack (generic) · Contactors & protection solo+Feeder breaker nuisance trip
Feeder breaker nuisance trip on site-generic: Site LMS / breaker / skid local indicators shows BRK-TRIP. Techs see sessi…
SPD-FAILSite stack (generic) · Contactors & protection solo+SPD end-of-life indicated
SPD end-of-life indicated on site-generic: Site LMS / breaker / skid local indicators shows SPD-FAIL. Techs see session …
RCD-TESTSite stack (generic) · Contactors & protection solo+RCD fails monthly test
RCD fails monthly test on site-generic: Site LMS / breaker / skid local indicators shows RCD-TEST. Techs see session abo…
COOL-PUMPSite stack (generic) · Coolant skid · Liquid cooling solo+Coolant pump no flow
Coolant pump no flow on site-generic (coolant-skid): Site LMS / breaker / skid local indicators shows COOL-PUMP. Techs s…
COOL-LEAKSite stack (generic) · Coolant skid · Liquid cooling solo+Glycol leak at quick-connect
Glycol leak at quick-connect on site-generic (coolant-skid): Site LMS / breaker / skid local indicators shows COOL-LEAK.…
COOL-AIRSite stack (generic) · Coolant skid · Liquid cooling solo+Airlocked loop after fill
Airlocked loop after fill on site-generic (coolant-skid): Site LMS / breaker / skid local indicators shows COOL-AIR. Tec…
COOL-SENSSite stack (generic) · Coolant skid · Liquid cooling solo+Flow sensor false low
Flow sensor false low on site-generic (coolant-skid): Site LMS / breaker / skid local indicators shows COOL-SENS. Techs …
CAB-IRSite stack (generic) · Cables & connectors solo+Cable IR insulation fail
Cable IR insulation fail on site-generic: Site LMS / breaker / skid local indicators shows CAB-IR. Techs see session abo…
CAB-PINSite stack (generic) · Cables & connectors solo+CCS pin burnt
CCS pin burnt on site-generic: Site LMS / breaker / skid local indicators shows CAB-PIN. Techs see session abort or stal…
CAB-LATCHSite stack (generic) · Cables & connectors solo+Latch microswitch false open
Latch microswitch false open on site-generic: Site LMS / breaker / skid local indicators shows CAB-LATCH. Techs see sess…
CAB-STRAINSite stack (generic) · Cables & connectors solo+Strain relief broken
Strain relief broken on site-generic: Site LMS / breaker / skid local indicators shows CAB-STRAIN. Techs see session abo…
LMS-ZEROSite stack (generic) · LMS / power cabinet · Power cabinet / LMS solo+LMS allocates 0 A all ports
LMS allocates 0 A all ports on site-generic (lms-cabinet): Site LMS / breaker / skid local indicators shows LMS-ZERO. Te…
LMS-COMSite stack (generic) · LMS / power cabinet · Power cabinet / LMS solo+LMS PLC offline
LMS PLC offline on site-generic (lms-cabinet): Site LMS / breaker / skid local indicators shows LMS-COM. Techs see sessi…
CAB-FANSite stack (generic) · LMS / power cabinet · Power cabinet / LMS solo+Power cabinet fan fail
Power cabinet fan fail on site-generic (lms-cabinet): Site LMS / breaker / skid local indicators shows CAB-FAN. Techs se…
CAB-BUSSite stack (generic) · LMS / power cabinet · Power cabinet / LMS solo+DC bus undervoltage
DC bus undervoltage on site-generic (lms-cabinet): Site LMS / breaker / skid local indicators shows CAB-BUS. Techs see s…
CAB-PARSite stack (generic) · LMS / power cabinet · Power cabinet / LMS solo+Parallel cabinet sync fail
Parallel cabinet sync fail on site-generic (lms-cabinet): Site LMS / breaker / skid local indicators shows CAB-PAR. Tech…
PAY-NFCIngenico / payment · Self/4000 family · Payment terminals solo+NFC tap intermittent
NFC tap intermittent on ingenico (self-4000): PED screen / host response code shows PAY-NFC. Techs see session abort or …
MDM-APNSierra Wireless / Semtech · AirLink modem · Modem / cellular solo+Wrong APN after SIM swap
Wrong APN after SIM swap on sierra-wireless (airlink): AirLink ALEOS / LED pattern shows MDM-APN. Techs see session abor…
CAB-NACSSite stack (generic) · Cables & connectors solo+NACS handle overtemp
NACS handle overtemp on site-generic: Site LMS / breaker / skid local indicators shows CAB-NACS. Techs see session abort…
CTR-AUXSite stack (generic) · Contactors & protection solo+Aux contact feedback mismatch
Aux contact feedback mismatch on site-generic: Site LMS / breaker / skid local indicators shows CTR-AUX. Techs see sessi…
BESS-UVFluence / BESS · BESS solo+BESS undervoltage at cabinet
Fluence BESS reports undervoltage at the EVSE feed / PCS AC or DC bus. Chargers brown out or Faulted while the BESS alar…
BESS-OVFluence / BESS · BESS solo+BESS overvoltage trip
BESS overvoltage trip inhibits charge/discharge path feeding EVSE. Cabinets go dark or refuse sessions after regen/charg…
BESS-INTFluence / BESS · BESS solo+BESS interlock open
BESS interlock open: door, E-stop, or maintenance key removes EVSE feed permission. Chargers look ‘dead’ with healthy ut…
BESS-THERMFluence / BESS · BESS solo+BESS thermal runaway alarm
BESS thermal runaway alarm or thermal inhibit. Evacuate/response plan may apply; EVSE feed locked out.…
BESS-COMFluence / BESS · BESS solo+BESS EMS comms loss
BESS EMS communications loss: EVSE may default to safe inhibit or open-loop weirdness. CSMS shows stalls unavailable wit…
BESS-SOCFluence / BESS · BESS solo+SOC floor blocks EVSE feed
SOC floor blocks EVSE feed: BESS will not discharge below configured floor; depot chargers starve overnight or at end of…
SWG-TRIPEaton · Switchgear solo+Feeder breaker trip charging peak
Eaton feeder breaker trips at charging peak. Multiple EVSE Faulted or dark; breaker handle mid-trip. Idle voltage looked…
SWG-GFEaton · Switchgear solo+Switchgear ground fault
Switchgear ground-fault protection trips depot feed. EVSE cluster drops; GF relay or breaker GF function indicated.…
SWG-XFMREaton · Switchgear solo+Transformer overtemp
Transformer overtemp at charging peak. Fans on; hot-spot alarm; EVSE derates or breakers trip on overload secondary.…
SWG-ARCEaton · Switchgear solo+Arc-flash relay trip
Arc-flash relay trip opens gear. Site dark; investigation required before re-energizing.…
SWG-PFEaton · Switchgear solo+Power factor / harmonic trip
Power factor / harmonic protection trips or utility complains; EVSE sessions coincide with PQ alarms.…
SWG-DOOREaton · Switchgear solo+Gear door interlock
Switchgear door interlock prevents breaker close or trips to inhibit. EVSE feed won’t restore after maintenance.…
CMS-AUTHAmpcontrol · Fleet CMS solo+Fleet CMS driver auth fail
Fleet CMS driver auth fails: credential/app rejected while hardware and OCPP look healthy. Other drivers may work.…
CMS-SESSAmpcontrol · Fleet CMS solo+Session not created in CMS
Session not created in CMS: charger may deliver energy but fleet software shows no session; billing/reporting broken.…
CMS-OCPPAmpcontrol · Fleet CMS solo+CMS-OCPP mapping wrong connector
CMS–OCPP mapping wrong connector: driver on stall A billed/authorized as stall B; faults chase the wrong cabinet.…
CMS-SCHEDAmpcontrol · Fleet CMS solo+Schedule blocks depot overnight
Schedule blocks depot overnight: CMS policy prevents charge outside window; drivers report ‘broken’ chargers at 02:00.…
CMS-APIAmpcontrol · Fleet CMS solo+API key revoked mid-shift
API key revoked mid-shift: integrations stop; remote start/smart charging fails; local RFID may still work.…
CMS-TZAmpcontrol · Fleet CMS solo+Timezone skew mis-schedules
Timezone skew mis-schedules: schedules fire hours early/late after DST or depot relocation config.…