626618 Neuco L175-40 High-Limit Control
626618 Nordyne L175-40 High-Limit Control
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.