Amana-Goodman B1370188 Limit Switch

The Amana-Goodman B1370188 Limit Switch is a critical safety component designed for fixed-mount applications in residential furnaces. This OEM furnace limit control operates on an automatic reset logic, calibrated to open at 170°F and close at 140°F. Precision-engineered for Goodman and Amana furnace repair, this L170-30F switch prevents heat exchanger damage by interrupting the burner circuit if internal plenum temperatures exceed safe operational parameters. As a direct HVAC high limit replacement, the B1370188 features a standard two-pin terminal configuration for easy integration into existing wiring harnesses. Proper installation requires verifying that the thermal cutout range matches the manufacturer’s data plate to ensure system integrity and furnace overheating protection. This robust HVAC safety switch is essential for maintaining airflow regulation and avoiding premature component fatigue in high-cycle heating environments.

• OEM Precision: Direct replacement part ensures exact fitment and maintains the original engineering specifications of the heating system.
• Automatic Reset: Simplifies troubleshooting by automatically closing the circuit once temperatures drop to the 140°F threshold.
• Enhanced Safety: Provides reliable thermal protection to prevent heat exchanger cracking and potential fire hazards.
• Wide Compatibility: Designed for use across a broad range of Goodman, Amana, and Janitrol gas furnaces.

What causes this limit switch to trip repeatedly?
Frequent tripping is usually a symptom of restricted airflow, often caused by a dirty HVAC air filter, blocked return ducts, or a failing blower motor.

Can I use a higher temperature limit switch instead of the B1370188?
No. You must always match the L-code (170-30) specified by the manufacturer. Installing a higher limit switch can lead to dangerous plenum temperatures and structural damage.

Is the B1370188 compatible with all Amana furnaces?
While widely used, compatibility depends on the specific model and serial number. This part is a standard furnace limit control for many mid-efficiency and high-efficiency units.

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.