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The Bard 5650-046BX is an OEM 24V solenoid coil supplied boxed for service, used to energize a compatible solenoid valve assembly so the system can shift refrigerant flow when commanded by the controls. When a coil is weak, open, or intermittently failing, you can see symptoms like a valve that does not pull in reliably, inconsistent heating or cooling changeover on heat pump applications, or sporadic operational faults. Replacing with the correct Bard coil helps restore proper valve actuation and keeps the unit operating to factory specifications, but confirm your valve model, wiring connections, and coil voltage match 24VAC before ordering.
Bard uses suffixes like "BX" to manage parts internally. These do not change the physical form or function of the part.
A part number ending in "BX" simply means it is packaged in a box for shipping, rather than for internal assembly use.
Example: 8406-142BX is physically identical to 8406-142.