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What are the port designations for this relay
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Pro-tier construction ensures reliable HVAC circuit protection and cycling endurance
Nordyne 626421R Control Board Els PW 29614 What are the port designationsThe Nordyne 626421R Control Board is a critical OEM Hot Surface Ignition (HSI) module engineered to manage the automated firing sequence of furnace burners. This technician grade replacement board (Revision R) is the direct superseding part for legacy numbers 626421, 1018 204, and 1018 504. Designed for single stage Nordyne gas furnaces and packaged units, it provides precise 24VAC control and features on board diagnostics via LED flash codes to
