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The RCD lh680013 is a flame sensor designed as a direct OEM-style replacement component for gas furnace applications. The flame sensor monitors the presence of a burner flame and sends a low-voltage signal to the furnace control board to confirm ignition. If the sensor fails to detect a flame within the ignition trial period, the control board shuts off the gas valve as a safety measure. This part measures 15.65 inches in length, 5.95 inches in width, and 1 inch in height, and weighs 0.055 pounds. Licensed HVAC technicians typically source this part when a furnace exhibits short-cycling, lockout faults, or nuisance no-heat calls tied to flame sensing failure.
The lh680013 flame sensor is intended for use in residential gas furnace systems where the original OEM sensor requires replacement. Compatible units noted in supplier documentation include the 58MCA040 10012, 58MCA040 11108, and 58MCA040 10008, among others. This part is appropriate for installation during routine furnace maintenance, seasonal startup inspections, or diagnostic service calls where flame sensing is identified as the root cause of ignition failure.
Compatible with furnace units including the 58MCA040 10012, 58MCA040 11108, and 58MCA040 10008. Designed as an OEM-style replacement flame sensor for residential gas furnace systems. Consult the full model fit list for additional compatible units.
Flame sensor replacement is performed by licensed HVAC technicians. Always shut off power to the furnace at the disconnect switch and turn off the gas supply before beginning any service work. The sensor is typically secured with a single mounting screw and connects via a spade terminal wire lead — handle the ceramic insulator carefully to avoid cracking. Work should comply with applicable local mechanical codes and the furnace manufacturer's service documentation.
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