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Resideo L4064B2210/B Fan & Limit Controller 11-1/2" Insert

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Special Price $97.42 Regular Price $112.03
In stock
SKU
L4064B2210/B
The Resideo L4064B2210/B 11-1/2" Fan and Limit Controller Insert is a temperature-control component used in furnace and air-handler HVAC systems. It works by detecting the temperature variation and turning on the blower fan when the heat is too high, as well as turning off the system when the temperatures are beyond the safe range. The insert is used to fit in the controller housing and offer stable thermal monitoring without any external housings. It is typically installed in residential and commercial forced-air heating equipment and is wired in the safety and control circuit of the system, assisting HVAC systems.
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HVAC Controls & Electrical, Control Boards & Modules
Manufacturer:
https://www.partshnc.com/media/catalog/product/l/4/l4064b2210_b_720.jpg

Specifications

  • Type: Fan and Limit Controller
  • Insertion Length: 11-1/2"
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Product Questions (2)
Customer Questions
What maintenance is required for the Resideo L4064B2210/B Fan & Limit Controller?

Regularly inspect the controller for dust, debris, and corrosion that could affect performance. Test the fan and limit functions to ensure proper operation. Check that electrical connections are secure. Always disconnect power before servicing for safety.

What are common issues with the Resideo L4064B2210/B Fan & Limit Controller?

  • Fan failing to activate at the correct temperature.
  • Limit switch not tripping reliably.
  • Inaccurate temperature sensing.
  • Loose or corroded electrical connections.

Installation Steps

Step 1: Turn off power to the furnace to prevent electrical shock.

Step 2: Remove the old controller insert by disconnecting wiring and carefully sliding it out.

Step 3: Insert the new controller fully into the furnace slot.

Step 4: Reconnect all wires according to the original configuration or wiring diagram.

Step 5: Secure the insert in place to ensure stable contact.

Step 6: Restore power and test fan and limit operation.