Description
The Nordyne 626464 is an OEM auto-reset high-limit switch engineered to protect furnaces and heating equipment from dangerous overheating conditions. When supply air or heat exchanger temperatures exceed the upper threshold, this limit switch interrupts the burner circuit — then automatically resets once temperatures return to a safe level, minimizing downtime and service calls.
How It Works
This auto-reset limit switch monitors operating temperatures continuously. If the sensed temperature rises to the upper limit, the switch opens to cut power to the burner. Once the temperature drops back to the lower setpoint, the switch closes automatically, restoring normal operation without requiring a manual reset.
Key Specifications
- OEM Part Number: 626464
- Brand: Nordyne
- Upper Limit (Opens): 135°F
- Lower Limit / Auto Reset: 120°F
- Reset Type: Automatic (AUTO)
- Application: Furnace high-limit protection
Features & Benefits
- Auto-reset design eliminates the need for manual intervention after a limit trip
- Precise 135°F open / 120°F reset setpoints for reliable overheat protection
- Direct OEM replacement for Nordyne furnaces — ensures proper fit and function
- Protects heat exchangers, blower components, and downstream equipment from heat damage
- Helps maintain system efficiency and extends furnace service life
Compatibility
Designed as a direct OEM replacement for compatible Nordyne furnace models. Always verify your equipment’s model and part number before ordering to ensure proper fit.
Installation Notes
Installation should be performed by a qualified HVAC technician. Disconnect all power to the unit before replacing the limit switch. Refer to the original equipment manufacturer’s documentation for wiring diagrams and mounting specifications.
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