Lennox 11Y28 – 101334-07 is an OEM defrost sensor wiring harness designed for reliable communication between defrost sensors and the control board in compatible Lennox heat pump systems. This factory-specified harness comes preconfigured with Sensors #1 and #2 installed, while Sensor #3 is replaced by a fixed 10K resistor to maintain proper circuit resistance where a third sensor is not required. With a total harness length of 50 inches, it allows correct routing and secure connection during service or replacement.

This defrost sensor wiring harness is used to ensure accurate temperature feedback during defrost cycles, helping the system prevent coil icing, reduce unnecessary defrost operation, and maintain overall heat pump efficiency. As a genuine Lennox replacement part, it meets original equipment specifications for fit, resistance values, and long-term reliability.

 

Key features:

• Genuine Lennox OEM defrost sensor wiring harness
• Factory part number 101334-07 (Lennox 11Y28)
• 50 inch harness length for proper routing
• Sensors #1 and #2 preinstalled
• Fixed 10K resistor in place of Sensor #3
• Ensures correct defrost control operation
• Designed for direct replacement with no modification

 

Applications:

• Lennox heat pump systems requiring a two-sensor defrost configuration with resistor substitution
• HVAC service repairs involving defrost sensor or harness failure