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Resideo L4064B2228/B Fan & Limit Controller 5" Insert

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Special Price $112.52 Regular Price $129.40
In stock
SKU
L4064B2228/B
The Resideo L4064B2228/B 5" Fan and Limit Controller Insert is a required control component used in the HVAC systems to regulate the operation of the blower and temperature limits in furnaces. The working concept of this system component is that the heat in the plenum is detected, and the fan and burner are switched to cycle at predefined values. It is fitted in commercial and residential forced-air heating parts and has a vital role in the system concept, regulating the time of airflow, ensuring safe temperature levels, and minimizing the excessive heating in the normal operation of a furnace.
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HVAC Controls & Electrical, Control Boards & Modules
Manufacturer:
https://www.partshnc.com/media/catalog/product/l/4/l4064b2228-b.jpg

Specifications

  • Type: Fan and Limit Control
  • Insertion Length: 5"
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Product Questions (2)
Customer Questions
What maintenance is required for the Resideo L4064B2228/B Fan & Limit Controller?

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

What are common issues with the Resideo L4064B2228/B Fan & Limit Controller?

  • Fan not activating at the correct temperature.
  • Limit switch failing to trip reliably.
  • Temperature sensing inaccuracies.
  • Wiring or terminal issues causing intermittent operation.

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 sliding it out carefully.

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

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

Step 5: Secure the insert to ensure proper contact.

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