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The Bard 8201-078BX bypass timer is a 24V OEM control component used in Bard wall mount and other Bard HVAC equipment to provide timed bypass operation during specific start up or fault related conditions, helping the unit maintain proper sequencing and reduce nuisance trips tied to safety or pressure switch timing. This boxed replacement timer is intended to restore factory-correct operation when an original timer is intermittent, out of calibration, or failed, and it is best matched by verifying the part number against the unit wiring diagram and model and serial tag before ordering.
* Orders less than $50 may incure a minimum order fee.
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.