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Common Questions Is the 971-C100-53 interchangeable with internal protectors
as long as the system utilizes a 24Vac control circuit
Key Benefits Compatibility: Direct OEM replacement for the 626552
Does this board require jumpers for timing adjustments
Lochinvar & A.O. Smith 100167769 Control Board Refrigerant Common Questions Is the 971-C100-53The Lochinvar & A. O. Smith 100167769 Integrated Control Board is a critical component for managing central heating logic, ignition sequences, and safety monitoring in high efficiency boilers and water heaters. As a veteran grade OEM replacement part, this board is the direct successor and is 100% identical to the RLY30013, ensuring seamless HVAC control board compatibility without requiring harness modifications. It functions as the primary "brain"
