Carrier HH18HA166 Limit Switch 318423-701 skipping the prefilter leads to

skipping the prefilter leads to rapid loading of the secondary collection cells

Proper calibration with this Maxitrol regulator part is essential for achieving the correct stoichiometric ratio in high-demand combustion equipment

this single-phase motor delivers a consistent 3000 RPM to maintain optimal draft pressure and combustion efficiency

Common failure points include scorched contacts due to low voltage or faulty start capacitors

Flexible Sensing: Dual slip-on sample line connectors allow for differential pressure sensing across filters or coils

Carrier HH18HA166 Limit Switch 318423-701 skipping the prefilter leads toThe Carrier HH18HA166 is a critical safety component designed for precise thermal monitoring in residential and light commercial HVAC systems. This 160F CO Auto Limit Switch operates as a primary high limit protection device, featuring a Normally Closed (NC) circuit that opens upon reaching its fixed setpoint of 160F. As a genuine OEM replacement part, it ensures seamless integration with Carrier, Bryant, and Payne furnaces, specifically replacing the