Lochinvar & A.O. Smith 100170461 Potentiometer

Replacing a worn-out thermostat potentiometer is a standard procedure to restore precise temperature modulation in commercial and residential heating systems. The Lochinvar & A.O. Smith 100170461 Potentiometer is a critical HVAC replacement part designed for high-duty cycles, ensuring that the control board receives accurate resistance feedback for burner sequencing. This specific component is a direct OEM match, confirming that the 100170461 is identical to TST1091, which streamlines truck stock and simplifies cross-referencing during service calls. Verified for use in several water heater and boiler models, including the 100, 060, and 080 series, it maintains the tight operational tolerances required for safe equipment firing. Utilizing an OEM potentiometer like this one prevents common diagnostic errors and "hunting" issues caused by fluctuating resistance in inferior aftermarket alternatives. This industrial-grade control component is engineered to withstand the vibration and thermal stress typical of boiler room environments, providing reliable service for veteran contractors and technicians.

• Broad Compatibility: Fully interchangeable with part number TST1091, facilitating seamless integration into Lochinvar and A.O. Smith assemblies.
• Precision Modulation: Delivers consistent resistance values to the control module for accurate temperature setpoint management.
• Technician-Ready Design: Features standard lead configurations and mounting dimensions to minimize downtime during field swaps.
• Durable Construction: Built to endure high-ambient temperatures and humidity levels found in mechanical rooms.

• Is the 100170461 a direct replacement for the TST1091? Yes, these two part numbers are identical in form, fit, and electrical specification.
• What are the symptoms of a failing potentiometer? Common indicators include erratic temperature swings, failure to reach the setpoint, or "AC Reversed" and ignition faults on the UIM display.
• Does this part require special calibration? While it is factory-tested to match OEM specs, always verify the control board settings and perform a combustion analysis after installation to ensure peak performance.

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.