Field technicians typically look for ignition failure codes

this green color-coded component ensures consistent performance in high-amperage applications

The Reznor 201158 Pressure Switch is a critical safety component designed for precise combustion air monitoring in high-capacity gas-fired unit heaters

Deviating from the factory set point can result in unsafe combustion or frequent lockouts

this sequencer provides exact fit compatibility for models including the AMMK and AEB series

Lochinvar & A.O. Smith 100074220 Flame Rod 328140-751 Field technicians typically look forThe Lochinvar & A. O. Smith 100074220 Flame Rod is a critical OEM replacement part designed for formal flame rectification within high efficiency commercial and residential water heaters. As an authentic sensor assembly, it monitors the DC micro amp signal produced during combustion to ensure the burner remains lit. If your system is experiencing "Ignition Failure" lockouts or rough operation, a fouled or degraded flame sensor is the primary culprit.