The "/U" suffix simply denotes a "Universal" or "Un-boxed" retail designation

This specific part is an igniter cable designed for the pilot assembly

engineered for the rigorous duty cycles of ovens

the 804112106 is compatible with natural gas

you must consult the original equipment serial number

Carrier 30RB660004 Heater 320788-703 The "/U" suffix simply denotesThe Carrier 30RB660004 Crankcase Heater is a factory authorized OEM component specifically engineered for Carrier 30RB scroll compressor chillers. As a veteran technician knows, maintaining proper oil temperature during the off cycle is non negotiable for system longevity. This heater effectively targets refrigerant migration, ensuring that refrigerant does not mix with the oil when the ambient temperature drops. By keeping the crankcase oil above the