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The Goodman 10123537 is a genuine OEM gray-body manual reset limit switch for the AMVC950704CXBA gas furnace. It functions as an over-temperature safety cutoff, interrupting the burner circuit when it senses excess heat and requiring a manual reset before the furnace will restart. The gray color code distinguishes its trip-temperature rating from other limits used in the same cabinet.
The OEM 10123537 matches the exact setpoint indicated by its gray coding — critical, since installing a limit with the wrong trip point defeats the furnace's overheat protection. Generic substitutes may not be color/temperature matched. Verify the color code and always use OEM for safety controls.
Easy (2/5). Cut power, unscrew the switch, move the spade terminals to the replacement, and remount. Confirm the gray rating matches the original and correct any underlying airflow restriction before restoring operation.