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The Bard 1804-0287BX low pressure control assembly is an OEM safety and control component used on Bard wall-mounted HVAC equipment to monitor refrigerant suction pressure and help prevent operation under low pressure conditions that can lead to poor cooling performance, coil icing, or compressor damage. When the system pressure drops below its designed threshold, this control signals the unit to respond according to the factory sequence of operation, supporting reliable protection and consistent troubleshooting. If you are replacing a failed or nuisance-tripping pressure control, match this part number to your unit model and serial information to ensure correct fit and proper system operation.
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.