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The 0161F00046 is the genuine OEM condensate drain trap for the Goodman/Amana ACVM970803BNAA high-efficiency (97% AFUE) modulating gas furnace. In a condensing furnace, the secondary heat exchanger produces acidic condensate that must drain freely; this trap maintains the water seal that lets condensate exit while preventing flue gases from being drawn back through the drain. A cracked, clogged, or algae-fouled trap causes water leaks, a tripped pressure switch, and ignition lockouts — common symptoms during heavy heating season.
The OEM 0161F00046 is molded to the exact port configuration and trap height the ACVM drain system requires, so the water seal and pressure-switch sensing stay correct. Generic traps with different geometry can cause false pressure-switch faults or improper draining. Genuine OEM is the reliable fit.
Moderate (2/5). Disconnect a few condensate hoses, swap the trap, and re-secure clamps — about 20–30 minutes. Pre-fill the new trap with water to establish the seal before restarting. While you're in there, flush the drain lines to clear any remaining slime or debris.