The Whitifield PSC120A‑3605 is a digital control board used in the Advantage pellet stove series to regulate fuel feed, ignition timing, and safety interlocks. Common failure modes on this model include blown fuses or shorted power rails, burnt or cracked surface‑mount ICs, degraded relay contacts, and faulty limit switches or temperature sensors that trigger error codes. Initial troubleshooting should verify the 24 V DC supply voltage to the board, inspect for visual signs of overheating or corrosion on key components, and test each relay and sensor with a multimeter or oscilloscope. If power and component integrity are confirmed, review the stove’s diagnostic log for specific fault codes (e.g., “E02” for auger failure) before proceeding to module replacement.[oss-gpt-20b]