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A tripped or faulty limit switch will typically cause the indoor blower to run continuously while preventing the burners from igniting or staying lit
Manufactured
managing multiple system components from a single 24V signal
Professional contractors rely on this burner tube to restore factory-spec performance and ensure consistent ignition during the heating season
making it a reliable choice for both new installations and retrofitting existing gas piping systems
Lochinvar & A.O. Smith 100166235 Pressure Switch Els PW 17895 A tripped or faulty limitThe Lochinvar & A. O. Smith 100166235 Pressure Switch is a critical safety component designed for precise draft proving in high efficiency HVAC systems. This SPDT (Single Pole Double Throw) switch is factory set to a . 95" WC (water column) setpoint, ensuring that the inducer motor establishes the correct static pressure before the ignition sequence begins. As a direct replacement part, this unit is physically and functionally identical to PRS30015,