Photo may vary slightly — verify by part number before ordering.York S1-03103882000 Main Circuit Board, 80% Furnace | OEM Source 1 Part
In stock and ordered before 1pm ET, Mon–Fri? It ships the same day from our US warehouse.
Not sure it's the right part? Send the model and serial — help@totalhvacparts.com or 302-219-4994.
Need more than 92? Ask about factory lead time — we'll give you a real date, not a guess.
Min. order: 1 unit · Weight: 0.53 lb
Overview
York S1-03103882000 (031-03882-000) is the genuine York Source 1 (S1) main circuit board for 80% furnaces (York description: Main Circuit Board, Furnace, 80% SS). It manages the heating cycle, including ignition timing, blower motor activation, gas valve signals and the safety inputs from sensors and limit switches. It is supplied for York, Coleman and Luxaire equipment, so confirm by your unit's model and serial number and the number on the old board.
Key details
- Main furnace control (circuit) board
- For 80% furnaces (York description: 80% SS)
- Handles ignition timing, blower activation, gas valve signals and safety inputs
- Sold as a single part, not a kit
Common questions
What does the main circuit board do?
It runs the heating cycle: ignition timing, blower motor activation, gas valve signals, and the safety inputs from sensors and limit switches.
Is this for a single-stage or two-stage furnace?
York lists it for 80% furnaces. Confirm the stage count against your old board and the furnace model before ordering, or send us the model and serial and we will check.
How do I confirm this is the right board?
Match the number on the board you are replacing. Send us your unit's model and serial number and we will confirm before you order.
What should I do before swapping the board?
Turn the power off at the disconnect and photograph the wire and harness positions before you remove the old board. Have a qualified technician do the install.
Why buy from Total HVAC Parts: Genuine York Source 1 OEM parts, supplied through authorized York OEM channels. Full manufacturer warranty applies. Need help confirming fit? Send us your unit's model and serial number before you order.
Shipping: Ships same or next business day. Free shipping on orders over $50; flat-rate shipping under $50. Returns follow our standard parts return policy.
Specifications
Values in italic are not yet confirmed from OEM documentation. Ask us to verify before ordering.
After You Order
Order number and confirmation by email the moment you check out.
In stock — ships the same or next business day, Monday–Friday, from our shelf or York's parts warehouse. Tracking follows by email the moment it leaves.
Tracking number lands in your inbox the moment it leaves the building.
Check the part number on the label against your order before installing. Wrong or damaged? Tell us — we'll sort it out.
Ask the Parts Desk
Not sure this fits? Need more than what's in stock? Send the model and serial from the unit's data plate — a real person reads it and confirms before you order.
Common Questions
Is the stock number on this page real?
Yes. The number on this page is the stock available to ship now for S1-03103882000: our own shelf plus York's parts warehouses, checked daily (last checked Oct 30, 2026). Above 100 it shows as 100+.
Is this a genuine York part, or aftermarket?
Genuine York OEM equipment sourced through York's authorized parts program — not an aftermarket substitute.
How do I confirm this fits my unit?
Match part number S1-03103882000 to your unit's parts diagram. If unsure, send us your model and serial number and we'll verify before you order.
I see this listed under a different name on other sites. Is it the same part?
Yes — manufacturers and distributors sometimes use different brand names or legacy labels for the same part number. Part number S1-03103882000 is identical across all name variations.
What's the warranty on this part?
Warranty terms vary by manufacturer. Contact us with your order number for details specific to this part.
How fast does this ship?
In-stock items ship the same business day on orders placed before 1pm ET, Monday–Friday. Standard ground delivers to most of the continental US in 2–5 business days. Ships via UPS/FedEx Ground, or truck freight for oversized items. Free standard shipping (US).
Does everything ship UPS or FedEx Ground?
Most orders ship UPS or FedEx Ground. A small number of large or heavy parts across the catalog ship by truck freight instead, and we reach out to arrange a delivery window before those orders leave the warehouse. Oversized items that ship by truck freight are also covered by free standard shipping on orders of $50 or more.
More parts in Controls
Not sure it's the right part? send us the model and serial — help@totalhvacparts.com or 302-219-4994.