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this occurs because the restrictor tee is missing or clogged
While some versions include a conversion kit
High-Temperature Sensitivity: Calibrated to trigger exactly at 270 degrees Fahrenheit to prevent damage to surrounding components and ensure safety
eliminating the voltage mismatch issues common with universal 120V alternatives
Copeland Comfort Control (Alco) 046474 Power Assembly 319847-401 this occurs because the restrictorThe Copeland Comfort Control (Alco) 046474 Power Assembly, also identified as model XB 1019RZ1B, is a critical OEM replacement component engineered for low temperature R502 refrigeration systems. Designed for precision thermal expansion valve control, this replacement power head features a 1 4" SAE flare equalizer connection and a 5 foot capillary tube for flexible positioning in compact evaporator coils or remote locations. With an application range
