Description
Nordyne 626485 Limit Switch L135-40F Overview
The Nordyne 626485 is an OEM replacement limit switch designed to protect furnaces from dangerous overheating conditions. Designated as the L135-40F, this switch opens at 135°F and features a 40°F differential, meaning it resets (closes) at approximately 95°F. When the furnace plenum or heat exchanger area exceeds the rated temperature, the limit switch interrupts the burner circuit, shutting down the heating system to prevent heat exchanger damage, component failure, or fire hazard. Once temperatures fall back within the safe operating range, the switch automatically resets to restore normal operation.
Key Features
- OEM Nordyne replacement part — ensures proper fit and function
- Opens (trips) at 135°F to protect against furnace overheating
- 40°F differential — resets at approximately 95°F for reliable auto-recovery
- Interrupts burner circuit on high-temperature condition
- Automatic reset operation for convenient, hands-free recovery
- Compatible with select Nordyne, Gibson, Frigidaire, Tappan, and affiliated brand furnaces
- Direct OEM replacement for fast, reliable installation
Application
This limit switch is engineered for use in Nordyne-manufactured gas furnaces and affiliated brand units. It serves as a critical safety device in the furnace control circuit, working in conjunction with the control board and gas valve to shut off the burner when unsafe temperatures are detected. Always verify compatibility with your specific furnace model number before installation.
Why Replace Your Limit Switch?
A faulty or failed limit switch is a common cause of furnace short-cycling, no-heat calls, and nuisance lockouts. Replacing a worn or tripped limit switch with a genuine OEM part like the Nordyne 626485 restores proper safety control and ensures the furnace operates within designed temperature parameters.
Specifications
- Part Number: 626485
- Brand: Nordyne
- Type: High-Limit Switch
- Open Temperature: 135°F
- Differential: 40°F
- Reset Temperature: ~95°F
- Reset Type: Automatic
- Application: Gas Furnace
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