626422R Nordyne limit switch manual L155F
626422R Nordyne limit switch manual L155F
Product Overview
The 626422R Nordyne limit switch manual L155F is a direct-fit, manual-reset safety control for residential gas furnaces. Factory-preset to interrupt the burner circuit at 155 °F, it protects heat exchangers from overheating. This OEM-quality replacement (626422R) comes ready to install, matching Nordyne, Coleman, and compatible furnace applications without modification.
Technical Specifications
| Specification | Detail |
|---|---|
| Cut-out temperature | 155 °F (± 5 °F) |
| Differential temperature | 20 °F (± 5 °F) |
| Contact configuration | SPST normally closed |
| Electrical rating | 25 A @ 240 VAC (resistive) |
| Reset method | Manual push-button |
| Terminal type | ¼″ quick-connect spade |
| Housing material | High-temperature bakelite |
| Mounting style | Snap-in or screw retention |
| Dimensions (approx.) | 1.5″ × 1.25″ × 0.75″ (L × W × H) |
| Weight | 0.18 lb (82 g) |
Cross-Reference Part Numbers
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Nordyne 626422R
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Neuco L155F
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Coleman L155F-626422
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OEM equivalent to 626422
Compatibility
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Nordyne and Coleman single-stage gas furnaces
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York, Westinghouse, Bryant, Payne standard models
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Goodman and Amana legacy series units
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American Standard Basic Heat and Pro-Line furnaces
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Any furnace using a 155 °F manual-reset limit switch
Technician Notes
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Always shut off all power and verify zero voltage before handling.
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Confirm original switch orientation and mount new unit in the identical position for accurate sensing.
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After wiring, press the reset button only once to clear a trip; diagnose overheating root cause before restarting.
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Test system by cycling heat and observing clean burner interruption at 155 °F.
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Torque spade terminals per spec to prevent arcing under load.
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Carry spare 626422R switches and matching quick-connect terminals for rapid field swaps.
Limit switch, 1/2D, size T-O-D36TX26, L155F, manual reset. Replaces 626422.