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This Sterling unit heater ignitor is cross-referenced for seamless integration with the Sterling GG Garage Guy Series and broader GG series models
Common indicators include an iced-over evaporator coil
Use the included brackets to secure the flat blade in the proper position across the burner path
Precise Motor Modulation: Delivers smooth variable speed fan control to stabilize head pressure during fluctuating ambient temperatures
Carrier HH18HA170 Limit Switch 321702-401 This Sterling unit heater ignitorThe Carrier HH18HA170 Limit Switch is a critical safety component designed for precise thermal monitoring in residential and commercial HVAC furnaces. This genuine OEM replacement part features an L170 40F specification, meaning it is calibrated to open the electrical circuit when the internal temperature reaches 170F and automatically reset once the temperature drops by 40F (resetting at 130F). Engineered for high limit protection, this switch