Technical Diagnostic Search
FlexiArm Side Brush Jammed
The main PCB detected an overcurrent event or mechanical stall condition on the FlexiArm servo extension actuator or the primary side brush motor circuit, triggering an automatic protective shutdown.
Inverter Overload High Voltage Cutoff
The bi-directional inverter detected an AC over-voltage condition or regenerative inductive back-EMF spike that exceeded the DC bus operating ceiling (>450V DC), triggering the hardware Over-Voltage Protection (OVP) cut-off to protect the GaN/MOSFET H-bridge.
Inverter PCB Communication Fault
Internal serial communication loss between the outdoor main control PCB (A1P) and the compressor inverter driver PCB (A2P). The safety watchdog triggers an emergency lockout to protect the IPM and compressor.
AC Inverter Overload Protection Lock
Error 305 indicates that the internal bidirectional AC inverter has engaged a hard software lock due to continuous sustained over-current, an extreme surge demand exceeding peak limits (over 8000W surge or 4000W continuous), or a dead short circuit detected on the AC output bus.
5x Telephoto Camera Server Died
The Android cameraserver daemon terminated unexpectedly (SIGSEGV or binder transaction failure) after failing to establish I2C/SPI handshake or MIPI-CSI frame synchronization with the 50MP 5x periscope telephoto module. This triggers a hardware safety cut or daemon crash when switching to 5x optical zoom.
High Voltage PV Overvoltage Trip
Error 038 indicates that the open-circuit voltage (Voc) applied to the High-Voltage (HV) PV input port exceeded the internal hardware limit of 450V DC. The internal MPPT charge controller initiated an emergency hardware overvoltage trip to protect the DC-DC boost stage and inverter circuitry.
Auto Test PV Isolation Low
Error 407 triggers when the inverter's internal diagnostic test detects that the insulation resistance between the DC PV array conductors and earth is below the safety threshold (typically <50 kΩ or standard local limit), preventing grid synchronization to avoid electrical shock or ground-fault fires.
FlexiArm Side Brush Stuck
Error 107 triggers when the FlexiArm micro-stepper motor or mechanical linkage encounters excessive resistance during side brush extension or retraction. The MCU detects overcurrent on the extension drive circuit or a limit switch timeout, shutting down the arm actuator to prevent motor burnout.
ProRes 4K 120fps Recording Dropout
ProRes 4K 120fps recording requires sustained write speeds of ~550 MB/s over USB 3.2 Gen 2 (10 Gbps). The error triggers when the direct external NVMe/SSD buffer experiences sustained thermal throttling, USB-C VBUS current sag below 4.5V @ 0.9A, or an intermittent SuperSpeed differential lane disconnect, forcing iOS to abort write operations to prevent file corruption.
HV PV Soft Start Failure
Error 030 triggers when the high-voltage (HV) PV input stage fails to complete its precharge sequence. The DELTA Pro Ultra utilizes an active inrush current limiting circuit (resistors/NTCs and bypass relays) to charge internal DC-link intermediate capacitors before engaging the full MPPT boost stage. If intermediate bus voltage fails to reach the design threshold within the precharge timeout window, or an overcurrent/short circuit is sensed, the firmware trips error 030 to protect the HV inverter semiconductors.