1-778-759-9864
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BCFurnace
3" HIGH LIMIT SWITCH L230-40F 3 High Limit Control Switches furnace part available in Vancouver, Burnaby, Port Moody, Langley, North Vancouver, Richmond, Maple Ridge, Delta, West Vancouver, New Westminster, Surrey, Coquitlam, Port Coquitlam, Pitt Meadows

3" HIGH LIMIT SWITCH L230-40F 3 High Limit Control Switches

BCFURNACE

543-230

CA$68.83

+5% Tax • Shipping calculated at checkout.

U.S. Duties/Taxes, if applicable, may be due at time of delivery.

Name

3" HIGH LIMIT SWITCH L230-40F

4units available

Pickup available at 75 Blue Mountain St #3

Usually ready in 24 hours

Secure Payment
Fast Delivery
Local Pickup

Product Details

Description

This 3-inch high limit switch is a critical safety component designed for residential and commercial gas furnaces and HVAC systems. It acts as a thermal safeguard by monitoring the temperature of the heat exchanger during the heating cycle. If the system detects an overheating condition that exceeds safe operating limits, the switch automatically interrupts the electrical circuit to the burners, preventing potential damage to the appliance and ensuring home safety. Once the temperature cools down by the designated differential, the switch resets to allow for normal operation. This reliable replacement part is essential for restoring proper function to heating units experiencing cycling issues or safety shutdowns.

Specifications

Type
Furnace High Limit Control Switch
Size
3-inch insertion depth
Dimensions
3 inches (insertion probe)
Application
Used in forced-air gas furnaces, central heating systems, and HVAC units to prevent overheating of the heat exchanger.
Specifications
Temperature Rating: Opens at 230°F; Differential: 40°F (Resets at 190°F); Mounting: Flange mount; Type: Normally closed, opens on temperature rise.

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Frequently Asked Questions

Is the 543-230 a genuine OEM part?
Yes, the 543-230 is a genuine OEM replacement part manufactured by BCFurnace. We source all 3 Limit Switches from authorized distributors to ensure exact-fit compatibility. This 3 Limit Switches is backed by our 100% compatibility guarantee — if it doesn't fit your furnace, we'll make it right.
How do I know if the 543-230 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (543-230) with your furnace model number. Visit the BCFurnace page on our site and enter your model number in the search bar — our system will show all compatible 3 Limit Switches for your specific unit. You can also call our technicians at 1-778-759-9864 for free compatibility verification.
How fast can I get the 543-230 shipped?
Most 3 Limit Switches including the 543-230 ship within 1–2 business days from our warehouse. We ship across Canada and the United States with tracking on every order. For urgent BCFurnace repairs, contact us at 1-778-759-9864 for expedited shipping options.
Can I pick up the 543-230 at your store?
Yes! Local pickup is available at our Coquitlam, BC location: 75 Blue Mountain St #3. 3 Limit Switches orders are usually ready within 24 hours. Call us at 1-778-759-9864 to confirm the 543-230 is in stock before visiting.

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