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Bard 5650-045BX is an OEM 24V 3 way reversing valve with a molded plug connection, used in Bard heat pump systems to route refrigerant flow so the unit can switch between heating and cooling modes. When a heat pump will not change modes, short cycles, or has incorrect discharge or suction temperatures during a call for heat or cool, this valve assembly is a common component to confirm against the unit wiring diagram and service literature. As a genuine Bard replacement part, 5650-045BX is built to match factory fit and control voltage requirements, helping restore proper mode changeover and reliable performance when installed by a qualified HVAC technician.
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.