Modine 5H0547510021 Orifice 318172-701 You should match the 667294R

You should match the 667294R part number against your unit's parts list

What do the flashing LED lights on the board mean

5 MFD 440V dual run capacitor designed for precise motor control in residential and light commercial condensing units

as operating with an out-of-tolerance run capacitor can lead to thermal overload and premature winding failure

Negative Pressure Optimized: Specifically recommended for appliances where the vent system normally maintains negative pressure

Modine 5H0547510021 Orifice 318172-701 You should match the 667294RThe Modine 5H0547510021 Orifice is a precision engineered Natural Gas Main Orifice designed for consistent gas flow regulation in commercial and industrial Modine heating units. As a critical component in the burner manifold assembly, this orifice is calibrated to maintain the specific manifold pressure required for efficient combustion and clean flame characteristics. Built from high grade, corrosion resistant brass, it ensures long term reliability