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Bard part number 1804-0106BX is an OEM high pressure control assembly used in Bard wall mounted air conditioning equipment to monitor refrigerant discharge pressure and open the safety circuit if pressure rises beyond the designed limit, helping protect the compressor and sealed system during abnormal conditions like airflow restrictions, dirty coils, or condenser fan issues. Replacing a weak or failed high pressure control with the correct Bard 1804-0106BX helps restore proper safety shutdown operation and reduces nuisance trips caused by out-of-spec aftermarket switches. Confirm compatibility by matching your unit model and the original part number on the existing control, and verify wiring and mounting style during installation.
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.