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The Goodman 0130F00038 is the genuine OEM auxiliary limit switch — identified by its light blue cap — for the Amana/Goodman AMH81005CXBC gas furnace and related models. This secondary safety switch guards a specific zone of the furnace (typically the blower or burner-box area) and opens the control circuit if temperatures exceed its rated setpoint, shutting the furnace down before damage or an unsafe condition occurs. The color code identifies its factory trip temperature, so matching it exactly is essential.
The light-blue 0130F00038 is factory-calibrated to a precise temperature that the furnace's safety design depends on. Installing a switch with the wrong color/temperature rating — common with generic substitutes — can cause premature trips and no-heat complaints, or worse, fail to protect the unit. Always match the OEM color code exactly.
Easy (1 of 5). Disconnect power, pull the two spade terminals, remove the mounting screws, and install the matching light-blue OEM switch. Reconnect, restore power, and confirm a full heat cycle. Typically under 10 minutes.
Genuine color-matched OEM part with fast shipping from NationalHVACParts.com.