OEM Goodman Auxiliary Limit Switch for GCH950905DXAC Furnace — 0130F00038

The Goodman 0130F00038 Auxiliary Limit Switch (identified by its light-blue body) is a genuine OEM safety control for the GCH950905DXAC gas furnace and compatible models. This automatic-reset thermal switch monitors temperature in the blower or secondary heat area and interrupts the circuit if it detects an overheat condition — protecting the heat exchanger, wiring, and cabinet from heat damage. A failed or drifting limit switch can cause the furnace to lock out, run the blower continuously, or refuse to fire.

Specifications

• OEM Part Number: 0130F00038
• Type: Auxiliary limit switch, automatic reset
• Color code: Light blue (temperature-rated identifier)
• Fits: Goodman GCH950905DXAC and compatible gas furnaces
• Function: Secondary high-temperature overheat protection
• Mounting: Bracket / snap-disc style, model-specific location

OEM vs. Generic

The light-blue color coding designates a specific trip temperature calibrated for this furnace platform. Installing a generic switch with the wrong set point can cause premature nuisance trips or, worse, fail to open when it should. This OEM part guarantees the correct trip temperature and terminal configuration, so the furnace's safety logic behaves exactly as designed.

Installation Difficulty: Easy

Rated Easy — usually under 20 minutes. Disconnect power, remove the access panel, note or photograph the wire terminals, unscrew the old switch, and mount the new one in the same position and orientation. Reconnect the leads, replace the panel, restore power, and verify a normal heat cycle. Always de-energize the furnace before servicing.