Lennox 25J38 Fan Relay 328140-751 a cracked ceramic base or

a cracked ceramic base or internal mercury leakage requires immediate replacement

Reference the "Air Tube Combination Code" on your existing burner's nameplate

the 8408-048BX is the identical OEM replacement for the standard 8408-048 model

this unit features a manual reset mechanism to ensure that equipment remains locked out until a manual inspection is performed following a low-pressure event

When installing this OEM combustion blower

Lennox 25J38 Fan Relay 328140-751 a cracked ceramic base orAs a core component for indoor blower control, the Lennox 25J38 Fan Relay is a heavy duty 24V SPDT (Single Pole Double Throw) switch designed for high reliability switching in Lennox furnaces and air handlers. Professionals know that when a blower motor relay fails, it typically leads to a "no air" condition or a fan that runs continuously, potentially straining the motor windings. This OEM Lennox 25038 replacement features a 25A contact rating at 50