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ensuring the furnace meets its rated AFUE efficiency levels
along with the pilot tube
check the specific terminal unit submittal to ensure signal compatibility
a rhythmic "thumping" or "squealing" sound
though technicians should always verify their specific damper shaft diameter for proper hub fitment
Lochinvar & A.O. Smith 100208470 Control Board 318973-401 ensuring the furnace meets itsThe Lochinvar & A. O. Smith 100208470 Integrated Control Board is a critical OEM replacement component engineered specifically for SYNC SBN1300 1500 condensing boilers. As a primary main control power module, this board facilitates precise management of the combustion process, including modulating firing rates and integrated modbus communication for advanced system networking. This unit serves as the direct replacement for obsolete Lochinvar RLY20055
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