Technical Diagnostic Search
DC Isolation Leakage Current Fault
Error 18xBD indicates an RISO/isolation fault where the DC bus isolation resistance to earth has dropped below the safety limit (typically <600 kΩ for single-phase or <1 MΩ for three-phase), causing an excessive residual/leakage current detection prior to grid connection.
High Voltage Isolation Fault
BMS_a171 is triggered when the Battery Management System detects that insulation resistance between the 400V/800V High Voltage DC bus and the 12V chassis ground drops below the safety threshold (typically <500 ohms/volt or <100 kOhms total), resulting in drive system shutdown to prevent electric shock.
NVSwitch Port Link Training Abort
SXid 62 designates an NVLink physical layer (PHY) communication breakdown where high Cyclic Redundancy Check (CRC) error rates prevent link training or cause an active link to abort during link negotiation between a Hopper GPU and an NVSwitch.
12V-2x6 Terminal Thermal Meltdown
High contact resistance across unseated or misaligned 12VHPWR/12V-2x6 power connector terminals caused localized Joule heating exceeding 105°C, resulting in terminal liquefaction, open-circuit voltage drop, and GPU VRM over-current/under-voltage protection black screen trips.
ThermoJet Heating Element Failure
The main PCB detected an open loop, abnormal current draw, or failure to rise to target operating temperature within the calibrated time window on the ThermoJet rapid-heating block. The system engages safety lockout to prevent thermal runaway or short-circuit damage.
Microcurrent Impedance Timeout Protection
The FOREO BEAR 2 Anti-Shock System registers an open-circuit or excessive contact impedance across its dual microcurrent spheres exceeding safety thresholds (>150 kΩ) under load. After attempting output current stabilization, the microcontroller's ADC triggers a firmware impedance timeout and safety crowbar protection, signaling a triple white LED blink.
Camera Failed ISP Bus Timeout
Fault 0x00000004 indicates an MIPI CSI-2 transmission bus timeout between the primary camera sensor module and the application processor Image Signal Processor (ISP), triggered by rail collapse, flex disconnection, or module hardware failure.
GPU Fallen Off The Bus
NVRM Xid 79 indicates an unrecoverable PCIe communication loss between host/PCIe switch and the H100 SXM5 GPU module. Root-cause mechanisms include physical baseboard socket unseating, PCIe Advanced Error Reporting (AER) fatal receiver/replay timeouts, transient 12V/48V rail power sag, or thermal throttle lockout.
LED Strip Open Circuit Fault
The controller MCU detected an open circuit condition on the red/near-infrared medical LED array. The constant-current driver IC exceeds target compliance voltage without sensing forward loop current, tripping hardware protection and flashing a single rapid amber pulse.
Flowmeter Pulse Detection Fault
On the La Marzocco Linea Micra, a rapid flashing red status LED during brew activation indicates that the Gicar control board is commanding the brew valve and pump ON, but zero pulses are registered by the Gicar volumetric flowmeter within the 5-second timeout window. This safety interlock halts dosing to protect the saturated group boiler and elements from dry firing or running dead-headed against a downstream hydraulic blockage or stalled flowmeter impeller.