Amana-Goodman 10728329 Limit Switch

The Amana-Goodman 10728329 Limit Switch is a critical safety component designed for precise thermal regulation within the furnace plenum. This OEM furnace limit switch operates on a calibrated 110-130F temperature range, functioning as a primary high-limit safety to prevent heat exchanger fatigue and potential cracking. When the furnace high limit sensor detects temperatures exceeding the 130°F threshold, it interrupts the burner circuit while allowing the blower motor to continue cycling to dissipate residual heat. Engineered for compatibility with specific Goodman and Amana gas furnaces, this bimetal disc switch features an automatic reset configuration. Replacing a faulty 10728329 is essential when troubleshooting a furnace blower running constantly or a unit that fails to initiate the ignition sequence due to an open safety circuit. This replacement HVAC limit switch ensures the system remains within factory-specified operating parameters, maintaining equipment longevity and operational safety for residential heating applications.

• OEM Compatibility: Direct drop-in replacement for Goodman 10728329, ensuring exact fitment and terminal alignment.
• Thermal Protection: Prevents heat exchanger overheating by terminating the gas valve signal upon reaching the 130°F limit.
• Automatic Reset: Features a 110-130F auto limit functionality that restores the circuit once internal temperatures stabilize.
• Safety Compliance: Crucial for resolving furnace limit switch tripping issues caused by restricted airflow or oversized burners.

Common Questions

How do I know if my Amana-Goodman 10728329 limit switch is bad?
If your furnace blower runs continuously even when the thermostat is off, or if the burners shut down prematurely before the call for heat is met, the limit switch may have internal resistance or a failed bimetal disc.

What causes a furnace high limit switch to trip repeatedly?
Common causes include a clogged furnace filter, blocked return air ducts, a failing blower motor, or a cracked heat exchanger. Always verify static pressure and airflow before assuming the switch is defective.

Can I use a universal limit switch instead of the 10728329?
To maintain the UL certification and safety profile of the furnace, it is recommended to use the OEM 10728329. Using a switch with a different temperature differential or set point can lead to unsafe operating conditions.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.