you know that a faulty flame sensor is a leading cause of the "ignition for 3 seconds then shutdown" symptom

The Robertshaw 41-205 Hot Surface Ignitor (Type 501A) is a high-performance Norton gas range ignitor designed for maximum physical and thermal strength

most HVAC technicians look for a reading between 25 and 30mV

Can I use this sensor on Carrier or Bryant units

System Reliability: Protects against pressure loss and external leakage in pilot-operated regulators

Rheem-Ruud 42-24196-82 Pressure Switch Els PW 17895 you know that a faultyThe Rheem Ruud 42 24196 82 Pressure Switch is a critical OEM safety component engineered for precise draft proving in high efficiency gas furnaces. This SPST furnace pressure switch is factory calibrated to a 0. 80" WC set point, ensuring the inducer motor generates sufficient negative pressure to safely vent combustion gases before the ignition sequence begins. Featuring a standard 1 4" barb connection for secure pneumatic tubing attachment, this