Lennox 29M17 Limit Switch 319825-402 How do I verify the

How do I verify the pressure setting

This SPDT (Single Pole Double Throw) relay features a unique dual-coil input design

as a veteran tech knows

Corrosion Resistance: Fabricated to handle the low-pH condensate common in high-efficiency condensing furnaces

the E6-12 effectively protects downstream equipment from abrasive contaminants

Lennox 29M17 Limit Switch 319825-402 How do I verify theWhen 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