Current Sensing Compressor Lockout Board Control Board, Circuit, Ignition Modulating
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Pickup available at 75 Blue Mountain St #3
Usually ready in 24 hours
The Current Sensing Compressor Lockout Board is a critical safety and diagnostic component designed for high-performance HVAC systems. This control board monitors the electrical current flowing to the compressor to identify potential faults, such as locked rotors or overcurrent conditions, automatically locking out the system to prevent expensive hardware damage. As an ignition modulating circuit, it ensures precise operation during the startup sequence and maintains system stability. Whether you are troubleshooting an air conditioner that won't stay running or a heat pump experiencing electrical errors, this replacement board is essential for restoring reliable climate control and protecting the longevity of your compressor.
Our team is happy to help you verify compatibility before you order. We'll confirm it fits your specific furnace model.
1-778-759-9864Mon–Sat 8AM–5PM PT · Or email parts@bcfurnace.com
Compatible parts and related replacements
Yes, the 040-520 is a genuine OEM, or a factory replacement manufacturer approved part. We source all Control Boards from authorized distributors to ensure exact-fit compatibility. This Control Board is backed by our 100% compatibility guarantee — if it doesn't fit your furnace, we'll make it right.
The easiest way is to match the part number (040-520) with your furnace model number. Visit the homepage 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.
Most Control Boards including the 040-520 ship within 1–2 business days from our warehouse. We ship across Canada and the United States, and worldwide, with tracking on every order. For urgent furnace repairs, contact us at 1-778-759-9864 for expedited shipping options.
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 040-520 is in stock before visiting.
Still not sure this is the right part? Call 1-778-759-9864 and we will check your model number with you.
The model number is on the rating plate inside the furnace door.
189 more not shown. Check your own model number above.
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