Carrier KHAIR0201AAA Relay Kit 318172-701 High-Altitude Compatibility: Designed to maintain

High-Altitude Compatibility: Designed to maintain accurate trip points in challenging venting environments

blocked flue pipe

while the top-guided design and diaphragm isolated spring chamber protect critical working parts from scale and water-borne contaminants

Common Questions Is the ClimateMaster 23B0012N13 compatible with 3-way valves

Carrier KHAIR0201AAA Relay Kit 318172-701 High-Altitude Compatibility: Designed to maintainThe Carrier KHAIR0201AAA Isolation Relay Kit is a crucial OEM component designed for split system heat pumps, specifically 2 stage models including the CH17NA series. This 24V, 50 60Hz relay functions as a low ambient control bypass, effectively switching the controller out of the outdoor fan motor circuit during heating and defrost cycles to ensure stable head pressures and prevent motor stalling. Engineering grade electrical isolation protects