Lennox 99K31 Relay 322838-752 High-Pressure Durability: Engineered to handle

High-Pressure Durability: Engineered to handle up to 600 PSI

As the direct replacement for SC11S

always verify against the specific parts list for your unit's serial number

This module is designed exclusively for 1/2 HP EON 5

a mismatch in diameter can lead to improper fuel-to-air ratios

Lennox 99K31 Relay 322838-752 High-Pressure Durability: Engineered to handleThe Lennox 99K31 relay is a critical OEM replacement component designed specifically for managing blower motor operations in Lennox residential furnaces and AHUs. Rated for a 2. 5 4. 0 AMP load, this SPNO (Single Pole Normally Open) relay ensures reliable low voltage control over high voltage circuits. Field technicians prioritize the 99K31 for its precise 24V coil voltage compatibility, which prevents common failures like relay chatter or pitted