Aaon P81580 Limit Switch

The Aaon P81580 Limit Switch is a critical safety component designed for high-performance HVACR applications, specifically within Aaon rooftop units and air handlers. This 170-200F Auto Reset Limit Switch features a 7-inch insert depth, ensuring precise thermal monitoring within the heat exchanger or airflow path. As a normally closed thermal switch, it provides essential circuit interruption when temperatures exceed the 200°F threshold, automatically resetting once the system cools to 170°F. Engineered for longevity in demanding commercial environments, this OEM Aaon replacement part ensures exact electrical ratings and mounting alignments are maintained. For technicians troubleshooting Aaon furnace high limit trips, the P81580 offers the reliable calibration necessary to protect heat exchangers from cracking while preventing nuisance shutdowns. This high-limit safety control is a direct-fit solution for maintaining the structural integrity and operational safety of industrial heating systems.

• Automatic Reset Logic: Eliminates the need for manual intervention by cycling the circuit back to closed once temperatures drop to 170°F.
• Extended Probe Reach: The 7" insert depth allows for accurate core temperature sensing in wide-duct or large-cabinet configurations.
• Precision Thermal Calibration: Specifically rated for a 200°F cutout to meet Aaon OEM specifications for equipment protection.
• Durable Construction: Built to withstand the high-cycle demands of industrial gas-fired heating sections and electric heat banks.

What causes an Aaon P81580 to trip frequently?
Frequent tripping is often indicative of restricted airflow, such as clogged filters, a failing blower motor, or undersized ductwork, rather than a faulty switch.

Can I use a shorter insert as a substitute for the P81580?
Substitution is not recommended. The 7-inch probe is strategically positioned to sense temperatures at a specific point in the airflow; a shorter probe may result in delayed response times and equipment damage.

Is the P81580 compatible with other HVAC brands?
While the electrical specs may match, this part is specifically engineered for Aaon equipment compatibility regarding mounting bracket alignment and probe depth.

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.