Technical Diagnostic Search
Inverter HV Bus Overvoltage
Error 049 is triggered when the internal DC high-voltage bus linking the DC-DC boost stage and the DC-AC full-bridge inverter exceeds safety thresholds (>450V DC). The firmware latches the gate drivers into a shutdown state to prevent catastrophic IGBT/MOSFET rupture.
High Voltage PV Overvoltage Fault
The internal High-Voltage MPPT controller detected an open-circuit voltage (Voc) exceeding the absolute maximum threshold of 450V DC on the High-PV port, triggering safety isolation relays to prevent inverter MOSFET breakdown.
Steer-by-Wire Redundancy Channel Offline
Drive Inverter Rear (DIR) or front drive unit has detected a loss of communications or power loss on secondary channel B of the 48V steer-by-wire dual-redundant actuation loop. The system falls back to single-channel fail-operational mode with restricted dynamics.
AC Inverter Inductive Overload 104
Error 104 triggers when the AC inverter's hardware current-sensing circuitry (shunt/hall sensor) detects an inrush current exceeding the unit's peak surge threshold (typically >8000W peak or >70A momentary spike), caused by high inductive loads such as heavy compressors, pumps, or large electric motors tripping the fast overcurrent protection (OCP).
Grainy Display Low Brightness Mura
Sub-pixel luminance non-uniformity across the Dynamic AMOLED 2X panel caused by low-current drive variance at lower brightness levels (Mura effect). This manifests as a fine grain or sandpaper texture when driving sub-pixels under ~10-15 nits due to microscopic threshold voltage (Vth) shifts in the LTPS/LTPO thin-film transistor backplane.
Moisture Detected Warning Dry Loop
The USB Type-C interface controller (CC logic) registers persistent low impedance between VBUS, CC1/CC2, and GND lines despite a physically dry port. This triggers continuous hardware interrupt warnings from the USBDaemon subsystem, blocking wired charging.
Rear Drive Unit Inverter Fault
DI_u038 indicates an internal fault within the Rear Drive Unit (RDU) inverter assembly. The drive inverter supervisory microcontroller has detected a gate drive discrepancy, DC-link overvoltage/undervoltage, or high-voltage silicon carbide (SiC) power stage shoot-through protection event, leading to inverter stage lockout.
High-Voltage PV Input Overvoltage
Error ERR305 triggers when the open-circuit voltage (Voc) applied to the Delta Pro 3 high-voltage PV port exceeds the maximum allowable hardware threshold of 150V DC. The internal MPPT controller opens protection MOSFETs to prevent overvoltage breakdown of input filter capacitors and switching semiconductors.
AC Output Overload Error 106
Error 106 indicates an AC inverter hardware overcurrent protection event caused by severe inrush current exceeding surge limits (typically >8000W transient or prolonged >4000W continuous) from highly inductive loads like compressors, pumps, or large power tools.
Camera Control Bus Timeout Panic
The application processor kernel panicked due to a communication watchdog timeout across the SPI/I2C serial bus interfacing the Camera Control sapphire touch/force ASIC. When the capacitive controller fails to ACK interrupts within the thermal/power envelope, the system triggers a defensive reset.