Technical Diagnostic Search
Inverter Compressor Driver Board Fault
Fault F.733 denotes an inverter communication or hardware trip on the compressor driver board (power electronics). The system shuts down compressor operation to protect the hermetic scroll compressor and IPM from phase failure, overcurrent, or DC-bus voltage instability.
Rear Steer-by-Wire Actuator Fault
The Drive Inverter / Steer-by-Wire controller detected an internal fault, plausibility mismatch, or communication failure with the rear steer-by-wire electromechanical actuator, triggering reduced steering authority or locking the rear rack to center.
HV Battery Comms Failure
Err106 designates a communication loss or packet timeout across the internal high-voltage CAN bus link between the DELTA Pro Ultra Inverter Module and the connected LFP Battery Pack(s). When BMS heartbeat telemetry drops below threshold, the inverter trips isolation relays to mitigate thermal and electrical hazards.
ProRes 4K 120Hz Recording Dropped
The iOS Camera subsystem terminates recording when sustained write throughput to an external NVMe drive falls below the required deterministic bandwidth (~220-440 MB/s) or when host VBUS current draw exceeds the 5V 900mA (4.5W) safe limit, triggering host controller reset or frame buffer overrun.
Rear Inverter Failure Drive Disabled
Drive Inverter alert DI_u034 indicates the rear power electronics supervisory controller detected an internal phase short, gate driver circuit fault, or DC bus desaturation, forcing open the high-voltage contactors and disabling rear propulsion.
Rear Drive Unit Inverter Shutdown
DI_a138 indicates an internal fault within the Rear Drive Inverter gate drive circuitry or power stage, triggering an immediate shutdown of the rear drive unit to prevent shoot-through or thermal runaway.
Dual Solar MPPT Overcurrent Trip
Error E041 indicates a dual solar MPPT hardware overcurrent protection trip. The internal DC-DC charge controller detected input current exceeding absolute hardware limits (High-PV port >30A peak or Low-PV port >15A peak), triggering an immediate solid-state disconnect to protect the buck-boost MOSFETs.
ProRes 4K 120fps External Recording Drops
During ProRes HQ 4K at 120fps capture, sustained write throughput demands ~220-400 MB/s and peak USB bus power exceeding 4.5W (5V/0.9A). When drive burst power trips the iPhone USB-C controller overcurrent protection (OCP) or the storage controller throttles below sustained write thresholds, the I/O pipeline fails, dropping frames and unmounting the drive.
Side Brush Extension Arm Stuck
Error 108 triggers when the mainboard detects an overcurrent condition (>450mA) or a hall-effect sensor timeout on the motorized side brush extension linkage, indicating mechanical binding or actuator stall.
BMS Inverter Communication Lost
Error 302 signifies a complete loss of CAN/RS485 data telemetry between the DELTA Pro Ultra inverter module and the stacked high-voltage LFP battery pack BMS. As a safety interlock, the inverter shuts down AC/DC outputs and halts HV DC bus charging to prevent over-voltage or thermal runaway.