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The Lochinvar L100277838 is a connection board designed to serve as an electrical interface component within Lochinvar heating or water heating equipment. Connection boards manage and route low-voltage and control-circuit signals between system components, enabling proper communication and coordinated operation of the appliance. This part is typically installed by licensed HVAC technicians or plumbers during routine service, component replacement, or system commissioning. Its role as a central wiring interface makes it a critical component for restoring proper electrical communication within the unit.
The L100277838 is intended for use in Lochinvar residential or commercial heating and hot water systems where the original connection board has failed or been damaged. This type of component is commonly addressed during diagnostic service calls when control signal faults or wiring interface failures are identified. Installation is performed at the board level, replacing the existing unit within the appliance cabinet.
Designed as an OEM-style replacement connection board for compatible Lochinvar heating and hot water appliances. Consult the equipment service manual or Lochinvar technical support to confirm fitment for a specific model before installation.
Installation should be performed by a licensed HVAC technician or qualified plumber familiar with Lochinvar equipment. Disconnect all electrical power to the appliance before removing or installing any control board. Follow the equipment manufacturer's wiring diagram when reconnecting terminals to the new board. Adhere to all applicable local codes and manufacturer service guidelines throughout the replacement procedure.
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