Technical Diagnostic Search
Toolhead Communication Lost
Error HMS 0300-8000 indicates the AP mainboard has lost signal communication with the toolhead TH board via the USB-C bus cable, halting printing to prevent nozzle crashes.
Inverter/Charger Temperature Too High
Victron Error 17 (or flashing Temperature LED) triggers when internal power transformers or FET heat sinks reach thermal shutdown thresholds, reducing continuous power to preserve hardware integrity.
AC Over Current Fault
Fault F18 occurs when instantaneous AC output current exceeds the hardware peak current threshold, indicating a downstream short circuit, heavy inrush current, or internal inverter bridge failure.
Bus Voltage Too High
Error Code 08 represents an internal DC bus over-voltage condition (exceeding 500VDC internally). This is a critical protective shutdown to protect the main capacitor bank and IGBT bridge from catastrophic rupture.
Grid Over Frequency Fault
Fault F13 indicates that the utility grid or generator frequency has exceeded the country-code safety limits (typically 50.5Hz or 51.5Hz for 50Hz grids, or 60.5Hz for 60Hz grids).
Heatsink Over Temperature
Error Code 02 triggers when internal thermal sensors register temperatures exceeding 90°C (194°F) on the main power MOSFET heatsink or transformer core.
Low Battery Voltage
Error Code 04 indicates that the battery bank voltage has plummeted below the low-voltage cutoff threshold configured in the inverter settings, prompting an emergency shutdown to prevent irreversible battery cell degradation.