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York S1-025-35381-000 Auto Limit Switch 115°F–145°F

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Special Price $21.76 Regular Price $28.28
In stock
SKU
S1-025-35381-000
The York S1-025-35381-000 Auto Reset Limit Switch is a component that is temperature-activated to detect the amount of heat in HVAC systems. It will switch off at 115°F to interrupt the system when it reaches a specific temperature, and it will automatically restart at 145°F when everything is normal. It is installed close to heat exchangers, burners or air handlers to avoid overheating by regulating circuit continuity to fans, burners or other components. This limit switch application control in furnaces and rooftop units, ensuring safe operation, eliminates damage caused by the high temperatures and facilitating the operation of heating equipment.
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HVAC Controls, HVAC Limit Switch
Manufacturer:
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Manufacturer Name: York
Product Number: S1-025-35381-000
OEM Part Number: S1-025-35381-000
Product Description: 115-145F Auto Limit Switch
Weight:0.04lbs/18.14g

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Product Questions (2)
Customer Questions
What maintenance is required for the York S1-025-35381-000 Limit Switch?

Inspect the switch periodically for dust, corrosion, and loose wiring connections. Ensure proper electrical continuity and secure mounting. Prevent overheating by verifying system airflow. Regular checks can maintain accurate temperature cutoff performance and better operation.

What are common issues with the York S1-025-35381-000 Limit Switch?

  • Electrical contact failure causing intermittent shutoff.
  • Temperature sensing drift leading to inaccurate cutout.
  • Wiring looseness or terminal overheating.
  • Mechanical sticking of reset mechanism.
  • False tripping under normal operating conditions occurs.

Installation Steps

Step 1: Turn off power and verify HVAC unit is fully de-energized before servicing.

Step 2: Remove access panel and disconnect the faulty limit switch wiring carefully.

Step 3: Mount the new switch in the original position near the heat exchanger or burner compartment.

Step 4: Reconnect terminals firmly, matching the original wiring diagram.

Step 5: Restore power, run system, and confirm proper auto-reset operation.