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8403-066 OBSOLETE
- Digital Tstat/Controller
Bard 8403-066 is an OEM ECU Series digital thermostat controller used to manage unit operation and temperature setpoints in compatible Bard wall mounted environmental control units. This controller serves as the primary user interface for day to day adjustments and programming functions, and it is referenced in Bard ECU documentation as the thermostat controller used on the system control panel. If you are replacing a failed or damaged controller, match your existing ECU series setup and wiring to ensure proper operation, and note that Bard shows this part as obsolete with an official replacement option available depending on your unit model and revision. Always verify compatibility by unit model and serial number before ordering.
Official replacement(s):
8620-375
- Replacement Digital T-Stat/Controler for ECU Unit that replaces the 8403-066