Lennox y7300 Outdoor Coil Sensor

Product Description

The LENNOX y7300 is an outdoor coil sensor designed for use in Lennox MDE T2B series HVAC systems. This sensor monitors refrigerant coil temperature on the outdoor unit, providing the system controller with data needed to regulate defrost cycles, prevent coil freeze-up, and protect compressor operation. It is a direct OEM replacement part installed by licensed HVAC technicians during routine maintenance or system fault diagnosis.

The y7300 is intended for residential and light-commercial split-system applications using Lennox MDE T2B outdoor unit configurations. It is typically replaced when the system control board reports a coil sensor fault, when temperature readings are erratic, or when the unit fails to initiate or terminate defrost correctly. Installation is performed at the outdoor unit without requiring refrigerant system access.

Key Features

• OEM Lennox replacement coil sensor for MDE T2B outdoor units
• Monitors outdoor coil temperature to support defrost cycle control
• Protects against coil freeze-up and compressor overload conditions
• No refrigerant system access required for replacement
• Direct plug-in replacement reduces installation time

Compatibility

Designed as an OEM-style replacement sensor for Lennox MDE T2B series outdoor units. Verify the part number against the unit data plate and service documentation before installation.

Installation Notes

Installation should be performed by a licensed HVAC technician. Disconnect and lock out all electrical power to the outdoor unit before handling any internal components. Secure the sensor lead to the coil in the same position as the original to ensure accurate temperature readings. Consult the unit service manual and follow applicable local codes for low-voltage sensor wiring.

Technical Specifications

• Application: Outdoor Coil Temperature Sensing
• Series: MDE T2B

Standard Information

• Brand: LENNOX
• Manufacturer Part Number: y7300