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The Lochinvar L100157775 is a sensor kit designed as a replacement component for Lochinvar heating and hot water systems. Sensor kits in these applications monitor critical operating conditions such as water temperature or system pressure, feeding real-time data to the control system to maintain safe and efficient operation. Licensed plumbers, HVAC technicians, and hydronic heating specialists install this type of component during routine maintenance or when a faulty sensor triggers a fault code or system lockout. Replacing a failed sensor promptly restores accurate system monitoring and prevents nuisance shutdowns.
This sensor kit is intended for use in Lochinvar residential and light commercial boiler or water heater applications where factory-matched sensing accuracy is required. It is suited for service calls where the original sensor has drifted out of calibration, developed an open circuit, or failed outright. Installing an OEM-matched kit ensures the replacement interfaces correctly with the existing control board and wiring harness without modification.
Designed as an OEM-style replacement sensor kit for Lochinvar boiler and water heater systems. Consult the equipment service manual or Lochinvar technical support to confirm fitment for a specific unit model before ordering.
Installation should be performed by a licensed HVAC technician or plumber familiar with hydronic heating systems. Before servicing, shut down the appliance, disconnect electrical power, and allow the system to cool and depressurize according to the equipment manufacturer's service procedure. Follow all applicable local mechanical and plumbing codes during replacement. Refer to the Lochinvar service manual for the specific unit to confirm sensor location, wiring connections, and any required control board calibration steps after installation.
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