How to Locate the Limit Switch in a Rheem Furnace
- 1). Remove the top access panel on the front of the Rheem furnace. Hold the sides of the panel while lifting it up and toward you. Set the removed panel aside.
- 2). Examine the exposed furnace components to find the plenum, or main duct junction, on the furnace's upper housing; the plenum is a small metal box that is secured to the top of the furnace cabinet with several sheet metal screws.
- 3). Look for the fan limit switch, which is mounted to the side of the furnace plenum. Look for a flat, round component that is labeled "Fan Limit."
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