626618R Nordyne L175-40 High-Limit Control Normal Stock Item Product Overview Genuine Nordyne OEM high-limit control designed for residential gas furnace safety applications. The L175-40 opens at 175 °F to shut down burner operation and automatically resets once it cools by 40 °F. Compact and reliable, it protects heat exchangers from overheating and ensures safe cycling. Technical Specifications Specification Detail Cut-out temperature 175 °F Differential reset 40 °F Switch type SPST normally closed, automatic reset Terminals Two 1/4″ male quick-connect spades Lead length 6 in (each) Mounting style Snap-in bracket Net weight 0.03 lb Shipping dimensions 10 × 12 × 12 in Shipping weight 10 oz Cross-Reference Part Numbers Our SKU Equivalent Part Function 626618 L175-40 High-limit safety temperature switch Compatibility Fits most Nordyne, Coleman, Heil, Westinghouse, and private-label gas furnaces originally equipped with an L175-40 high-limit control. Before ordering, verify: Cut-out/reset temperatures match furnace data plate Mounting bracket style and snap-in dimensions Terminal and lead-wire length requirements Installation & Technician Notes Disconnect all power and gas supplies; follow lockout/tagout procedures. Remove access panels to expose the burner compartment and limit control location. Photograph or tag existing wiring to ensure correct re-connection. Depress the snap-in bracket to release the old limit control; disconnect the spade terminals. Snap the new 626618 control into place, confirm bracket engagement, and reconnect each spade to its original terminal. Restore power and initiate a heat call; verify the burner cycles off at the correct temperature and that the control resets automatically as the system cools. Inspect all connections and wiring for tightness and proper insulation.
