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The RHEEM 62-23543-01k is a flame sensor kit designed for use in gas furnace systems. The flame sensor detects the presence of a burner flame through a process called flame rectification, allowing the furnace control board to confirm ignition and permit continued gas valve operation. When a flame sensor fails or becomes coated with oxidation, the furnace will light briefly then shut down on lockout. This kit provides the replacement sensor needed to restore reliable ignition proving in affected units. Installation is performed by licensed HVAC technicians.
This kit is suited for residential gas furnace applications where the original flame sensor has degraded or failed. Flame sensors are a high-cycle component subject to gradual contamination from combustion byproducts, making periodic inspection and replacement a standard part of furnace maintenance. This part is intended as an OEM-style replacement, restoring the factory sensing function without modification to existing wiring or mounting locations.
Designed as an OEM-style replacement flame sensor kit for RHEEM gas furnace systems. Refer to the unit nameplate and service literature to confirm fitment before installation.
Installation should be performed by a licensed HVAC technician familiar with gas furnace service procedures. Shut off gas supply and disconnect electrical power to the furnace before removing the existing flame sensor. The sensor rod must be positioned correctly in the burner flame envelope to ensure proper rectification signal. Follow all applicable local codes and the manufacturer service documentation during replacement.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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