Heil Quaker ICP IS203655708 Pressure Switch What causes this high limit

What causes this high limit switch to trip repeatedly

ensuring a precise fit in supply plenums and heat exchanger assemblies

while the shock-resistant steel shell and corrosion-resistant epoxy powder paint provide durability in demanding environments

System Protection: Internal air filter prevents contaminants from clogging the precision 0

Heil Quaker ICP IS203655708 Pressure Switch What causes this high limitThe Heil Quaker ICP IS203655708 Pressure Switch is a mission critical safety component engineered for International Comfort Products (ICP) systems. This OEM furnace pressure switch is factory calibrated to a precise . 65 inch water column (WC) set point, ensuring the draft inducer motor maintains the correct negative pressure before ignition. Featuring a Single Pole Single Throw (SPST) configuration and a standard 1 4 inch barb connection, this switch