Pro TJ5D51-90 Fan And Limit Control (Combination Fan/Limit) OEM Part

Product Details

Genuine Pro part.

Cross Reference Information

Part Number TJ5D51-90 replaces AP5636905, 5D51-90, 5D5190, L4064B2236, M0352914.

Description

This combination fan and limit control regulates furnace blower operation and provides a high-limit safety cutoff to help prevent overheating. It replaces a failed control to restore proper blower cycling and temperature protection. What it does:

• Signals the blower to turn on and off based on furnace temperature
• Opens or closes fan stages to manage heat distribution
• Trips a safety limit to shut down heat if temperatures rise too high
• Helps address symptoms like no blower operation, blower running continuously, or repeated limit trips

What's included: One fan and limit control assembly Install notes:

• Disconnect all power to the appliance before beginning service
• Match mounting, terminal labeling, and wiring to the original control; do not force connections
• If the limit is tripping repeatedly, inspect for restricted airflow, dirty filters, or heat exchanger/venting issues before replacing the control