Lennox 97L01 Limit Switch R-407A A certified technician should verify

A certified technician should verify voltage and static pressure before replacement

the VT3317 is the 3-way valve body only

check the output at the gas valve connectors while the pilot is lit

do not bypass it

Lennox 97L01 Limit Switch R-407A A certified technician should verifyThe Lennox 97L01 Limit Switch is a critical OEM replacement part engineered for precise thermal regulation in Lennox gas furnaces and air handlers. This L200 30F limit switch is designed to open the electrical circuit if the heat exchanger temperature exceeds its 200F setpoint, preventing mechanical failure and ensuring safe combustion cycles. With a 30F differential for automatic reset, it provides consistent high limit protection and prevents