The AIMS PWRIC300012W is a 3 kW pure‑sine inverter/charger that converts 12 VDC from batteries to 120 VAC while simultaneously providing a built‑in smart charger up to 30 A. Common failure points for this model include overheating of the internal MOSFET array, blown main fuses or bypass diodes, loss of battery charging capability due to faulty charge controller ICs, and output waveform distortion when input voltage falls below ~10 VDC. First‑check diagnostics should verify that the 12 V supply is within spec and stable, inspect all fuses and the main power board for signs of burn or corrosion, and review any error codes displayed on the unit’s LCD panel (e.g., “Low Battery,” “Overheat,” or “Input Voltage Out of Range”).[oss-gpt-20b]