Frequent tripping is often a symptom of low refrigerant charge

If the inducer is running and you hear the gas valve click but see no orange glow from the furnace igniter

Engineered for R22 and R407C refrigerants

While it is designed to operate in any position

this 120V silicon carbide igniter is engineered for high-temperature durability and rapid thermal response

Lennox 69W42 Limit Switch 322057-301 Frequent tripping is often aThe Lennox 69W42 Limit Switch, also identified as the L220 30 Limit Switch, is a critical OEM safety component engineered for precise thermal regulation within Lennox, Armstrong, and Ducane furnaces. This furnace high limit switch features a 220F opening threshold to interrupt the electrical circuit immediately upon detecting an over temperature condition, effectively preventing heat exchanger damage and ensuring operational safety. With an automatic