The AIMS Power PICOGLF12KW48V204VS is a 12 kW low‑frequency pure sine inverter/charger that converts 48 VDC to 120/240 VAC with an integrated auto‑transfer switch and 120 A charger. Common failure points on this model include input voltage sag or over‑voltage causing the DC‑to‑AC converter to trip, overheating of the main IGBT module or heat sink leading to thermal shutdown, failure of the transfer relay contacts, and degradation of the battery charger’s charge control ICs after prolonged use. First‑check steps: verify 48 VDC input voltage and polarity; inspect the IGBT heatsink for excessive temperature rise or thermal paste loss; examine the transfer relay for mechanical wear or stuck contacts; review any diagnostic LEDs or error codes on the front panel for indications of over‑current, over‑temperature, or battery fault conditions.[oss-gpt-20b]