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This is the factory OEM replacement pressure switch (part number HK06WC061) for the Carrier N6A48NG481822 packaged gas/electric unit. The pressure switch is a critical safety device that monitors negative air pressure created by the induced draft blower. Once the inducer reaches proper speed and airflow is confirmed, the pressure switch closes its circuit and signals the control board to proceed with ignition. When this switch fails — whether due to a ruptured diaphragm, blocked port, or age-related fatigue — the furnace will lock out before ever attempting ignition, leaving you with no heat and a blinking fault code indicating an open pressure switch.
Compatibility: Designed specifically for the Carrier N6A48NG481822 packaged unit. Always verify the OEM part number on your existing switch label and cross-reference with HK06WC061 before ordering. If you are unsure, our HVAC parts specialists are available to confirm fitment prior to purchase. Order before 3 PM local time and this part ships today.