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This specific York circuit board replacement serves as the direct upgraded successor to the 331-03478-002
the Emerson Alco 058085 Power Element (X26300-SW45-1) is a critical replacement component for HF and HFK series thermostatic expansion valves
for gas safety shutoff valves
the Williams P321020 is built to withstand the rigorous heat cycles of a gas wall heater without degrading
Lochinvar & A.O. Smith 100110859 Harness Control 340155-7024 This specific York circuit boardWhen you're out on a call for a Lochinvar or A. O. Smith unit that won't fire or is throwing intermittent communication codes, the Lochinvar & A. O. Smith 100110859 Harness Control is often the culprit. This OEM replacement wire harness is engineered to maintain high integrity signal paths between the Smart System control board, the display interface, and critical safety components like the air pressure switch and gas valve. As a veteran in the field,