This OEM Lennox furnace part

ensure the enclosure or location keeps it free from direct environmental contaminants

Verify the specific model number on the compressor housing to ensure this HVAC thermal switch matches the original assembly requirements for your central air conditioner or heat pump unit

or visible burn marks on the internal circuit board

If the CNT08212 indicates a lockout

Aaon ASM01820 Sensor 326010-701 This OEM Lennox furnace partThe Aaon ASM01820 Digital Room Sensor is a high performance E BUS temperature and humidity sensor engineered specifically for integration with Aaon HVAC unit controllers. This OEM digital room sensor provides critical environmental data, utilizing a Type III 10K ohm thermistor to achieve a temperature precision of 0. 8F. Designed for demanding commercial applications, the ASM01820 features a 112 x 64 monochrome graphical LCD with an LED backlight,