Trane CNT2230 Control

As a veteran tech, you know that a reliable Trane CNT2230 Fan and Limit Control is the backbone of safe furnace operation. This genuine Trane replacement part is engineered to manage the blower cycle and provide critical high-limit protection for the heat exchanger. With a furnace fan switch range adjustable from 50°F to 265°F and a high limit safety range of 100°F to 300°F, this control ensures the plenum temperature stays within the tight tolerances required for residential and light commercial equipment. Whether you are performing a furnace limit switch replacement or troubleshooting a blower that won’t kick on, this 11.5-inch insertion element provides the accurate bimetal response needed for precise thermal sensing. The CNT2230 control is designed for direct compatibility with Trane and American Standard furnaces, eliminating the mounting headaches often found with universal models. It handles line voltage and low voltage circuits with ease, provided the brass jumper is configured correctly for your specific wiring application.

• Precise Thermal Control: Features a wide 50-265°F fan range and 100-300°F limit range for versatile system calibration.
• OEM Compatibility: Exact Trane CNT2230 match ensures proper fitment and terminal alignment without field modifications.
• Blower Management: Includes a manual fan switch for continuous operation, essential for air filtration or seasonal air circulation.
• Rugged Bimetal Sensing: The 11.5-inch helical element delivers fast response times to prevent heat exchanger damage or short-cycling.
• Multi-Voltage Application: Suitable for 120V and 240V fan circuits, and compatible with 24V gas valves when the jumper is removed.

Is this a direct replacement for Honeywell L4064 series controls?
Yes, the CNT2230 is frequently utilized as the OEM-specified version of the 11.5-inch L4064B controllers found in Trane equipment, maintaining original safety specifications.

How do I set the fan 'ON' and 'OFF' points?
Adjust the levers on the scaleplate dial to your manufacturer’s spec. Typically, setting the 'OFF' point too low can result in cool drafts at the end of a cycle, while too high may cause the blower to cycle back on briefly.

Does this unit work with 24V systems?
Yes, this control is compatible with low-voltage circuits. However, you must remove the brass jumper with pliers to separate the fan and limit terminals for 4-wire configurations.

This item is not eligible for free shipping.

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.