When facing a "two-flash" error on the control board

The Carrier 323267-701 Manifold Orifice is a precision-engineered #42 drill size component designed explicitly for natural gas furnace applications

the BASO H91DA-1C REVB gas valve is engineered for dependable performance

Direct Fit: Designed for rapid installation with standard lead connections

It is identical in form and function to the legacy FAN3727 part number

Heil Quaker ICP 1013813 Pressure Switch 323080-701 When facing a "two-flash" errorAs a seasoned technician, you know that high altitude environments demand precise pressure regulation to ensure safe ignition and combustion. The Heil Quaker ICP 1013813 Pressure Switch is the OEM replacement part specifically engineered for International Comfort Products (ICP) gas furnaces operating at higher elevations. This 1" WC pressure switch is calibrated to a 1. 00 inch water column set point, compensating for thinner air density to maintain