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The Goodman 0130F00036 Limit Switch (Pink) is a genuine OEM temperature-limit safety control for the Amana AMH81155CXCA gas furnace. The color-coded pink cap identifies its specific factory trip temperature. Mounted on the heat-exchanger bulkhead, it opens the control circuit if supply-air temperature climbs too high, shutting off the burners to prevent heat-exchanger damage and fire.
A tripped or failed limit switch causes no-heat, blower-only operation, or repeated lockouts. Because the trip point is model-specific, using the correctly rated pink switch is essential to safe operation.
Do not substitute by appearance alone — trip temperature is what matters. This genuine OEM Goodman limit carries the exact factory setpoint indicated by the pink color code, so the furnace's overheat protection behaves precisely as engineered. Generic switches with the wrong setpoint can nuisance-trip or, worse, fail to protect the heat exchanger.
Easy. Cut power, disconnect two spade terminals, remove the mounting screws, and install the matching switch. Confirm correct part color before ordering.