Description
Nordyne 626618 Limit Switch Overview
The Nordyne 626618 is a genuine OEM high-limit safety switch engineered to protect furnaces and heating equipment from dangerous overheating conditions. With an open temperature of 175°F and a reset temperature of 135°F, this limit switch reliably interrupts the burner circuit whenever supply air temperatures exceed safe operating thresholds, then automatically resets once temperatures return to normal levels.
How It Works
The limit switch continuously monitors heat exchanger or plenum temperatures. When air temperature rises above 175°F — indicating a potential airflow restriction, dirty filter, or other fault — the switch opens, shutting down the burner to prevent equipment damage or fire hazard. Once the system cools to 135°F, the switch resets and normal operation resumes.
Key Specifications
- Brand: Nordyne (OEM Genuine Part)
- Part Number: 626618
- Open (Trip) Temperature: 175°F
- Reset (Close) Temperature: 135°F
- Function: High-limit safety cutout with automatic reset
- Application: Nordyne-brand furnaces and heating equipment
Features & Benefits
- Genuine Nordyne OEM replacement for reliable, drop-in fitment
- Protects heat exchangers and equipment from thermal damage
- Automatic reset design restores normal operation after cool-down
- Helps maintain safe operating temperatures and system longevity
- Direct replacement for failed or out-of-spec limit switches
Compatibility
Designed as a direct OEM replacement for compatible Nordyne furnace models. Always verify your equipment’s model and wiring diagram before installation to ensure proper fitment and safe operation.
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