This is an essential stock item for any tech handling Trane-specific service calls

or disable the adjustment entirely to prevent unauthorized tampering

Long-Term Durability: Rated for 60

Whether you are managing chilled water systems or hot water boilers

ensure the pneumatic control air is clean and dry to prevent premature component failure

Lochinvar & A.O. Smith 100167799 Control Board R-410A This is an essential stockAs a veteran tech, you know that a glitchy boiler often traces back to the primary logic center. The Lochinvar & A. O. Smith 100167799 Control Board is the definitive OEM replacement part for high efficiency hydronic systems. This integrated control board is a direct, drop in successor to the discontinued RLY30043, ensuring 100% circuit board compatibility without requiring harness modifications. Engineered specifically for the Lochinvar Knight