7680-3591 Coleman limit switch L155-20F
S1-7680-3591 Coleman limit switch L155-20F
Elevate furnace safety with the genuine Coleman S1-7680-3591 upper limit switch. The L155-20F thermostat automatically shuts off the gas valve if the heat exchanger overheats, protecting your equipment and home. Precision-engineered for reliable trip temperature and reset characteristics, this switch fits standard 60T11 style limit housings.
Cross Reference
| Equivalent P/N | Manufacturer / Notes |
|---|---|
| 7680-359 | Original Coleman P/N |
| 626440 | Nordyne upper limit switch |
| L155-20F | Universal limit switch designation (60T11 style) |
Technician Notes
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Always disconnect electrical power at the service panel before servicing the furnace.
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Access the limit switch through the blower compartment; remove mounting screws and gently pull the switch out of its 60T11 housing.
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Verify continuity across the L1 and L2 terminals at room temperature and an open circuit when heated above 155 °F.
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Ensure replacement switch is fully seated in the housing and terminals are snug—loose connections can overheat.
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After installation, run the furnace through several heat cycles to confirm proper trip and reset operation.
Compatibility
| Application | Models / Series |
|---|---|
| Coleman Gas Furnaces | 7600, 7624, 7654, 7680 series |
| York & Miller Furnaces | Universal 60T11 limit housings |
| Aftermarket Retrofits | Any 60T11-style upper limit switch mount |
| Nordyne / Broan-NuTone | Replacement for part 626440 |
Upper limit switch shuts down gas valve if overheating occurs. L155-20F. Size 60T11.
Replaces 7680-359. Also replaces Nordyne part # 626440.