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Lower Emissions: Maintains a precise air-to-gas mixture to keep CO levels within safe operational parameters
It is best practice to install a new CO-12 head gasket whenever the head mechanism is separated from the body to ensure a pressure-tight seal
typically connecting to the 24VAC common (C) and cooling (Y/Y1) terminals via the provided blue
or failure to recognize a new anode rod installation
Lennox 29M17 Limit Switch Els PW 29614 Lower Emissions: Maintains a preciseWhen you're troubleshooting a furnace that's short cycling or throwing a four flash diagnostic code, the Lennox 29M17 Limit Switch is often the first component to inspect. As a critical OEM replacement part, this L215 40F limit switch is engineered to protect the heat exchanger from thermal stress. It features a fixed setpoint that opens the electrical circuit at 215F and automatically resets once the temperature drops to 40F, ensuring the HVAC system