Fault database
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18 results for “derate”
NACS-H03Cross-brand / Protocol · Cables & connectorsFree sampleNACS thermal derate to zero
NACS thermal derate to zero (NACS-H03) — NACS path field fault. Stay OEM-agnostic until the protocol stage pins a hardware path; capture SECC/OCPP/vehicle evidence before opening the cabinet.
LOAD-02Cross-brand / Protocol · Power cabinet / LMSFree sampleLMS heartbeat lost — failsafe curtail
LMS heartbeat lost — failsafe curtail — chargers derate or go Unavailable when site LMS/PLC heartbeat drops, protecting the feeder. protocol field note: keep evidence scrubbed and prove the ranked cause before module RMA on LOAD-02.
TEMP-01Cross-brand / Protocol · DC Fast ChargersFree sampleAmbient derate never recovers overnight
Ambient derate never recovers overnight (TEMP-01) — Thermal / ambient field fault. Stay OEM-agnostic until the protocol stage pins a hardware path; capture SECC/OCPP/vehicle evidence before opening the cabinet.
TEMP-03Cross-brand / Protocol · DC Fast Chargers solo+Sun load derate on unshaded cabinet
Sun load derate on unshaded cabinet (TEMP-03) — Thermal / ambient field fault. Stay OEM-agnostic until the protocol stag…
CP-E250-FANChargePoint · Express 250 · DC Fast Chargers solo+Power module fan fail
Express 250 power-module fan fail or thermal derate — loud/stopped fan, elevated module temps, or Cloud thermal events w…
CP-XP-NACSChargePoint · Express Plus · DC Fast ChargersFree sampleNACS port overtemp
Express Plus NACS port overtemp / derate — handle or inlet temps climb, session throttles or Faults, often in sun or after damaged handle work. chargepoint field note: keep evidence scrubbed and prove the ranked cause before module RMA on CP-XP-NACS.
ABB-T54-SENSABB · Terra 54 · DC Fast Chargers solo+Temp sensor open circuit
Terra 54 temp sensor open circuit — thermal derate/fault from open sensor harness. Field techs should correlate HMI/Clou…
TRI-PK-GUNTritium · PK350 · DC Fast Chargers solo+Gun temperature derate
PK gun temperature derate — handle/contact heat or sensor; sun and damaged guns rank high. Field techs should correlate …
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:…
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 …
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…
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.
PE-NB-MODPower Electronics · NB 360 · DC Fast ChargersEarly access pro+Module communication loss
Power Electronics NB360 loses communication with one power module in the bank, causing current-share calculations to fai…
PE-NB-COOLPower Electronics · NB 360 · Liquid cooling solo+Cooling pump Contactor chatter
Power Electronics NB360's cooling pump or an associated contactor exhibits audible chatter accompanied by flow-related f…
FLO-ST-TEMPFlo · Smart Two · AC Level 2 solo+Overtemp enclosure
Flo Smart Two derates or trips to Faulted with an overtemperature message during full-sun exposure or when enclosure ven…
SCH-EV-PHASESchneider Electric · EVlink · AC Level 2 solo+Missing phase on 3P install
Schneider EVlink on a three-phase install reports a missing or unbalanced phase after panel or breaker work: the unit ei…
SWG-XFMREaton · Switchgear solo+Transformer overtemp
The site transformer serving the depot runs into overtemperature right at charging peak — cooling fans are audibly runni…
BESS-BALFluence / BESS · BESS solo+Cell imbalance inhibits output
Cell or module imbalance within the BESS is limiting or fully blocking discharge output to the EVSE bus, so chargers eit…