Description
The Nordyne 626605 is an OEM replacement limit switch engineered to protect furnaces and heating systems from dangerous overtemperature conditions. Featuring a 150°F cutout set point and a manual reset (M/R) design, this limit switch requires a deliberate reset action before the system can resume operation — ensuring that the root cause of an overheating event is addressed before the equipment is restarted.
Key Features
- 150°F (65.6°C) cutout temperature set point
- Manual reset (M/R) operation for added safety
- Cutout (CO) configuration interrupts circuit on overtemperature
- Direct OEM replacement for compatible Nordyne heating systems
- Helps prevent heat exchanger damage and fire hazards caused by overheating
- Durable construction for long-term reliability in demanding HVAC environments
Product Specifications
- Brand: Nordyne
- Part Number: 626605
- Cutout Temperature: 150°F
- Reset Type: Manual Reset (M/R)
- Switch Type: Cutout (CO) Limit Switch
Application
Designed for use in Nordyne-branded furnaces and heating equipment, this limit switch serves as a critical safety component in the high-limit control circuit. When supply air temperatures exceed the 150°F threshold — due to restricted airflow, blower failure, or other fault conditions — the switch opens the circuit and shuts down the burner. Because it is a manual reset device, a technician must physically reset the switch after diagnosing and correcting the fault, preventing nuisance restarts and protecting both equipment and occupants.
Installation Notes
- Verify compatibility with your specific Nordyne model before installation
- Always de-energize the system before servicing limit switches
- Diagnose and correct the overtemperature condition before resetting the switch
- Consult the equipment service manual for proper mounting location and wiring
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