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The genuine Goodman 0130F00038 Auxiliary Limit Switch (Light Blue) is the factory-specified auto-reset high-limit safety control for the GCH950904CXAA 95% AFUE gas furnace. The color-coded body identifies its specific temperature trip point — this light-blue unit protects against overheating in the blower or supply-air section and de-energizes the gas valve if temperatures exceed the safe threshold.
Limit switches are temperature-calibrated safety devices — the color code matters. This genuine Goodman OEM switch is set to the exact trip and reset temperatures your furnace requires. Substituting a switch with the wrong rating can allow dangerous overheating or cause nuisance no-heat lockouts. Always match the color and part number.
Easy (2/5) — Two mounting screws and two spade terminals. Shut off power and gas first, note wire positions, and confirm the switch seats flat against the mounting surface for accurate temperature sensing.