silence or a buzzing sound often indicates a burnt-out coil or pitted contact surfaces

and carbon

the Red wire is for 208Vac

As a direct replacement for 41-410 and various Trane models like B144676P01

Ranco E15-2601 Control Els PW 17895 silence or a buzzing soundThe Ranco E15 2601 is a professional grade heat pump defrost control designed for field adjustable management of outdoor coil icing. Operating on 240V with a SPDT switch action, this unit is the direct replacement for the legacy E15 2601 270 model. It utilizes a 60 inch capillary and a 5 16" x 5 1 16" sensing bulb to monitor coil conditions with precision. To prevent short cycling and protect the compressor, the E15 2601 features a built in interlock