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The Goodman 0130F00038 is a genuine auxiliary limit / rollout safety switch — identified by its light blue cap — built for the Amana AMVC80603BNCA two-stage variable-speed furnace and compatible Goodman/Amana models. This secondary safety monitors for abnormal heat at the burner box or blower compartment and opens the control circuit to shut down the furnace if temperatures exceed safe limits, guarding against flame rollout and heat-exchanger damage. A tripped or failed auxiliary limit produces immediate no-heat and lockout conditions.
Auxiliary limits are color- and temperature-coded for a reason — the light-blue 0130F00038 carries the exact trip point Goodman specified for this location. Substituting a differently-rated generic switch risks nuisance trips or, worse, a limit that fails to protect at the correct temperature. Match the OEM part and color for safe, code-correct operation.
Easy — Disconnect power, unplug the two spade terminals, remove the mounting screws, and install the matching light-blue OEM switch. A 10–15 minute repair. Investigate and correct the root cause (blocked flue, dirty burners) before resetting a switch that has tripped.