Technical Diagnostic Search
Outdoor-Indoor Transmission Failure
Error U4-01 designates a serial communication loss between the outdoor hydro/inverter inverter PCB and the indoor hydro unit PCB. The system trips to protect the compressor from unmonitored operational states.
5x Telephoto OIS Sensor Shift Failure
Hardware-level actuator fault where the Camera HAL fails to initialize the 50MP periscope telephoto sensor-shift voice coil motor (VCM) feedback loop due to mechanical jamming, flex open-circuit, or LDO rail drop below 2.85V.
High Voltage PV Overvoltage Fault
Error code ERR_066 is triggered when the DELTA Pro 3's high-voltage PV port detects an input open-circuit voltage (Voc) exceeding the 150V DC threshold, or when internal serial communication between the dedicated high-voltage MPPT sub-controller and the main BMS/logic board fails under high electrical stress.
Water Flow Switch Interlock Failure
Error 7H-01 triggers when the hydro module Main PCB detects that the water flow switch contact remains open during circulation pump operation (interlock opened) or closed when the pump is idle, indicating insufficient hydronic flow (<12 L/min) or a defective flow sensor circuit.
Steer-by-Wire Redundancy Degraded
STEER_a065 triggers when the redundant steer-by-wire system detects a channel loss or mismatch between dual motor controllers in the front or rear steering actuator. The vehicle transitions to degraded steering control on a single channel.
Abnormal Water Flow Vortex Lockout
Error 7H-01 triggers when the hydronic vortex flow sensor detects a flow rate below the operational threshold (typically < 10-12 L/min depending on capacity) or inconsistent pulse frequency during pump operation, forcing a protective safety lockout to prevent heat exchanger freezing or thermal stress.
5x Telephoto OIS Rattle Failure
A fatal camera initialization fault triggered when the device cannot calibrate the 50MP 5x periscope telephoto module. Audible rattling indicates mechanical dislodgement or drive coil failure within the electromagnetic voice coil motor (VCM) or ball-bearing OIS suspension guide.
ProRes 4K120 Frame Drop
ProRes HQ 4K 120fps encoding generates continuous sustained write demands exceeding 220 MB/s (1.76 Gbps). When external NVMe or USB-C storage experiences thermal throttling, SLC cache exhaustion, insufficient VBUS delivery (under 4.75V at 1.0A), or uses a sub-10Gbps USB 3.2 Gen 2 cable, the internal DMA FIFO buffer overflows, triggering dropped frames and video recording termination.
ESC Communication Abnormal Takeoff Failure
The main flight controller (FC) lost bi-directional telemetry or UART/CAN communication with the electronic speed controller (ESC) sub-board. Takeoff is interlocked to prevent uncontrolled motor desynchronization or mid-air power loss.
Bi-Directional Inverter Overload DC Bus
The ERR302 code indicates that the internal power management unit detected an overcurrent or overvoltage condition on the high-voltage DC bus linking the battery management system (BMS) and the bi-directional inverter bridge, triggering immediate hardware protection shutdown.