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231630 Furnace Limit Switch – Suburban SF-20 SF-25 SF-30 SF-35 RV Replacement

$90.00 USD

~~$135.00 USD~~ $90.00 USD

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231630 Furnace Limit Switch – Suburban SF Series RV Furnace Replacement

A faulty limit switch is one of the most common reasons an RV furnace shuts off unexpectedly or fails to ignite. This 231630 replacement limit switch is a direct OEM-compatible fit for Suburban SF-Series furnaces, restoring safe, reliable heating to your RV or camper without the need for a service call. If your furnace is cycling off prematurely or not running at all, this is the part to check first.

Compatibility

Part Number: 231630
Compatible Models: Suburban Furnace SF-20, SF-25, SF-30, SF-35 Series
Fits most RV and stove furnace applications using the 231630 limit switch

Key Features

Direct OEM replacement – matches original dimensions and specifications
Thermal limit switch – protects furnace from overheating
Restores proper furnace cycling and ignition behavior
Durable construction for long-term RV use
Easy drop-in installation – no modifications required

What is a Furnace Limit Switch?

The limit switch is a safety device that monitors the furnace heat exchanger temperature. If the furnace overheats, the limit switch opens the circuit and shuts the burner off to prevent damage. A failed limit switch can cause the furnace to shut off prematurely, fail to ignite, or run continuously. Replacing a worn or faulty limit switch is a straightforward repair that restores normal furnace operation.

Installation

Disconnect power to the furnace before servicing. Locate the limit switch on the heat exchanger housing, disconnect the wiring, remove the old switch, and install the new 231630 unit. Reconnect wiring and restore power. Test furnace operation through a full heating cycle.