Suburban 232351 Furnace On/Off Switch – SF / SH / SHD / NT Series

Product Description

The Suburban 232351 Furnace Switch is a manual ON/OFF toggle switch used to control power to your RV furnace or related components. This is a simple, user-operated electrical switch—not a temperature-controlled fan switch or limit switch.

Commonly installed on or near the furnace, this switch allows you to manually turn the system or fan circuit on and off as needed. It is a direct OEM replacement for worn, broken, or non-functioning switches.

Key Features & Benefits

• OEM Suburban Part #232351
• Manual ON/OFF toggle switch (single pole)
• Controls power to furnace or fan circuit
• Direct replacement for original factory switch
• Simple, durable design for long-term use

Compatibility

Fits the following Suburban furnace models:

SF Series:

• SF-20, SF-25, SF-30, SF-35, SF-42
• SF-20Q, SF-25Q, SF-30Q, SF-35Q, SF-42Q
• SF-20FQ, SF-25FQ, SF-30FQ, SF-35FQ, SF-42FQ

SH Series:

• SH-35, SH-42
• SH-35F, SH-42F

SHD Series:

• SHD-2542
• SHD-2542Q

NT Series:

• NT-12S, NT-16S, NT-20S
• NT-12SE, NT-16SE, NT-20SE
• NT-16SQ, NT-20SQ
• NT-16SEQ, NT-20SEQ

Always verify your furnace model before ordering to ensure proper fit.

Common Problems This Part Fixes

• Furnace will not power on
• Fan or system will not turn on/off manually
• Broken or worn toggle switch
• Intermittent power due to faulty switch

What’s Included

• (1) Suburban 232351 Manual On/Off Toggle Switch

Installation Notes

• Disconnect power before installation
• Replace using existing mounting location
• Transfer wiring exactly as configured on original switch
• Professional installation recommended if unsure

FAQs

Is this a temperature-controlled switch?
No. This is a manual ON/OFF toggle switch and does not respond to temperature.

What does this switch control?
It typically controls power to the furnace or fan circuit, depending on the setup.

Is this the same as a limit switch or fan control switch?
No, those are automatic temperature-based components. This is a user-operated switch.

How do I know if mine is bad?
If your furnace won’t power on, or the switch feels loose or doesn’t click properly, it may need replacement.