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8403-066BX OBSOLETE
- Digital Tstat/Controller-Boxed NLA-Contact Tech Svcs if 4 Warranty
The Bard 8403-066BX is an OEM digital thermostat and controller assembly supplied boxed, used to command and monitor compatible Bard environmental control units by providing accurate space temperature control and sending the proper low-voltage signals for heating, cooling, and fan operation. This controller is commonly referenced in Bard ECU documentation as the thermostat/controller, making it a practical replacement when the original display, buttons, or internal electronics fail or become unreliable. Because control functions and wiring can vary by unit series and revision, confirm compatibility by matching the exact part number and verifying the unit model and wiring diagram before ordering to ensure proper staging and safe operation.
Official replacement(s):
8620-375
- Replacement Digital T-Stat/Controler for ECU Unit that replaces the 8403-066