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Bard 9022-005 is an OEM primary control used in Bard heating sections to manage safe burner operation by handling the call for heat sequence and safety shutoff logic when a proper flame signal is not proven. As the unit’s main burner safety and operating control, it helps coordinate ignition and burner timing so the heater can start, run, and lock out correctly under fault conditions. If you are troubleshooting nuisance lockouts, no-heat calls, or intermittent burner operation, replacing the primary control with the correct Bard part number helps restore proper operation and maintains factory intended performance and safety. Verify compatibility by matching the Bard part number 9022-005 to your unit’s model and service literature before ordering.