1-778-759-9864
Canada (CAD $) flagCanada (CAD $)
BCFurnace
Wire Harness, S5, User Control Board to VFD Control Board, Circuit, Ignition Modulating 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

Wire Harness, S5, User Control Board to VFD Control Board, Circuit, Ignition Modulating

BCFURNACE

121-547

CA$67.70

+5% Tax • Shipping calculated at checkout.

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

Name

Wire Harness, S5, User Control Board to VFD

1units available

Pickup available at 75 Blue Mountain St #3

Usually ready in 24 hours

Secure Payment
Fast Delivery
Local Pickup

Not sure this fits your furnace? Call us — we're happy to help

Product Details

Description

This premium S5 Wire Harness is a critical communication link designed for high-efficiency HVAC systems. Engineered to connect the user control board directly to the Variable Frequency Drive (VFD), this harness ensures seamless data transmission for precise motor speed adjustments and system modulation. Whether you are performing a routine maintenance check or repairing a non-responsive unit, this durable wiring assembly is essential for restoring the modulating ignition and control functions of your furnace, heat pump, or air conditioning system. Built with high-quality insulation and secure connectors, it provides a reliable, plug-and-play solution to resolve communication errors between control modules, ensuring your heating and cooling equipment operates at peak energy efficiency.

Specifications

Type
Wire Harness / Control Circuit Component
Size
Small
Application
High-efficiency HVAC systems, including residential furnaces, central air conditioners, and heat pumps utilizing variable frequency drives and modulating ignition controls.
Specifications
S5 communication protocol compatible, multi-pin connector interface, high-temperature resistant insulation for furnace and condenser environments.

Not sure this is the right part?

Our team is happy to help you verify compatibility before you order. We'll confirm it fits your specific furnace model.

1-778-759-9864

Mon–Sat 8AM–9PM PST · Or email parts@bcfurnace.com

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Frequently Asked Questions

Is the 121-547 a genuine OEM part?
Yes, the 121-547 is a genuine OEM replacement part manufactured by BCFurnace. We source all Control Boards from authorized distributors to ensure exact-fit compatibility. This Control Boards 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 121-547 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (121-547) 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 Control Boards 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 121-547 shipped?
Most Control Boards including the 121-547 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 121-547 at your store?
Yes! Local pickup is available at our Coquitlam, BC location: 75 Blue Mountain St #3. Control Boards orders are usually ready within 24 hours. Call us at 1-778-759-9864 to confirm the 121-547 is in stock before visiting.

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