SKU: 25831714121

L210-20F Furnace Primary Limit Switch (-40°F to 180°F) - For ICP Heil Tempstar Furnaces

Sale price$21.60 Regular price$24.00
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Description

L210-20F Furnace Primary Limit Switch (-40°F to 180°F) - For ICP Heil Tempstar FurnacesL210 20F Primary Furnace Limit Switch Key Features Critical safety switch designed to shut down the gas valve and burner circuit if the furnace heat exchanger exceeds maximum safe operating temperatures. Thermal setting calibrated to automatically open the circuit on temperature rise at 210F and close (reset) at 190F. Constructed with a highly responsive bimetallic disc enclosed in a temperature resistant phenolic housing to prevent heat distortion.

L210-20F Primary Furnace Limit Switch

Key Features

  • Critical safety switch designed to shut down the gas valve and burner circuit if the furnace heat exchanger exceeds maximum safe operating temperatures.
  • Thermal setting calibrated to automatically open the circuit on temperature rise at 210°F and close (reset) at 190°F.
  • Constructed with a highly responsive bimetallic disc enclosed in a temperature-resistant phenolic housing to prevent heat distortion.
  • Features a flush-mount bracket and standard 1/4-inch male quick-connect spade terminals for immediate electrical integration.

Replaces / Cross-Reference Part Numbers

  • L210-20F
  • 34335001
  • 34335-001
  • HQ34335001TD
  • 313408
  • 338085-758
  • 47-25349-06

Compatibility & Fitment

  • Compatible with select residential gas furnaces manufactured by International Comfort Products (ICP), Heil, and Tempstar.
  • Fits specific furnace models including: GDE050B12A2, GDE050B12G1, and GDE075F16A3.

When to Replace

  • The furnace continuously short-cycles, shutting off the burner assembly well before reaching the target thermostat temperature.
  • The furnace blower fan runs non-stop blowing cold air, indicating the system is locked out due to an open limit circuit.
  • The main control board diagnostic LED continuously flashes an error code specifically for an open high-limit switch.
  • A continuity test performed with a digital multimeter displays infinite resistance (an open circuit) while the switch is resting at room temperature.

Installation Tips

  • Turn off the main electrical breaker to the furnace and ensure the unit is completely powered down before opening the service panels.
  • Take a digital photograph of the existing wire connections to ensure the leads are routed back to the correct spade terminals.
  • Remove the two hex screws securing the original switch to the heat exchanger bulkhead and carefully pull the component straight out.
  • Align the new limit switch flush against the mounting surface and tighten the screws down evenly to prevent bending the mounting plate.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 25831714121

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