Lochinvar & A.O. Smith 100166064 Pressure Switch 318172-701 meaning this is a simple

meaning this is a simple on/off switch that closes the circuit once the -1

and three flashes indicate an ignition lockout after failed trials

the typical control air pressure for standard HVAC operation ranges from 0 to 20 PSIG

The remote dial is easily installed on any standard wall surface

Do I need to replace the defrost thermistor when installing this board

Lochinvar & A.O. Smith 100166064 Pressure Switch 318172-701 meaning this is a simpleThe Lochinvar & A. O. Smith 100166064 Pressure Switch is a critical safety component engineered for precise airflow monitoring in high efficiency water heaters and condensing boilers. Designed to prove the inducer motor draft before the ignition sequence begins, this genuine OEM pressure switch prevents the burner from firing if unsafe venting conditions, such as flue blockages or intake restrictions, are detected. This mechanical to electrical