Lochinvar & A.O. Smith 100109988 Control Board 319825-402 or rattling noises during the

or rattling noises during the furnace startup sequence often indicate a cracked or unbalanced inducer fan wheel

Common Questions & Technical Support How do I determine the correct stretch length for the coil

the TD244A offers a centralized control point

Enhanced System Control: Improves the responsiveness and stability of pneumatic control loops in HVACR applications

Dual Voltage Capability: Compatible with both 120V and 240V HVAC circuits for versatile field application

Lochinvar & A.O. Smith 100109988 Control Board 319825-402 or rattling noises during theOptimizing technical performance in gas fired commercial water heaters requires precise control over the 24V ignition sequence. The Lochinvar & A. O. Smith 100109988 Ignition Control Board is a factory authorized OEM replacement engineered for high recovery systems, ensuring consistent burner operation and flame sensing accuracy. As the direct updated version for the legacy 9004618005, this board integrates advanced microprocessor control logic to