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Bard part 9044-235 is an OEM fan/limit control (manufacturer reference 1000963) used to manage blower operation and protect the heater section from overheating in compatible Bard HVAC equipment. This control monitors discharge or plenum temperature and cycles the indoor fan at the proper points during heating while also opening on high temperature to help prevent heat exchanger and cabinet damage if airflow is restricted. If you are troubleshooting a blower that runs continuously, does not come on in heat, or a nuisance high limit trip, replacing the fan/limit control with the correct Bard OEM part helps restore proper fan timing and safety limit protection. Always confirm the insertion length, temperature setpoints, and wiring match your unit model and the Bard service literature before ordering and installation.