Warrick 26B1D1F Liquid Level Control Refrigerant the 663864R is the identified

the 663864R is the identified direct replacement part for the 663992 model

and temperature adjustments to optimize HVAC performance

compressor humming without turning over

though it is typically used in standard 0-20 psi pneumatic branch lines

BASE NOT INCLUDED

Warrick 26B1D1F Liquid Level Control Refrigerant the 663864R is the identifiedThe Warrick 26B1D1F Liquid Level Control is a performance grade low water cutoff control board engineered for precision fluid management in commercial HVAC and industrial process systems. Operating on a 120VAC supply, this conductive liquid level sensor utilizes a 10,000 ohm sensitivity threshold, making it ideal for clean water and low conductivity applications. As a direct replacement for Warrick 26B1C1F, it features an updated retrofit standoff