Same-day shipping before 3PM CST · 35,000+ OEM Parts · Texas CMBL & SAM.gov Registered · Government POs Accepted

Menu

Home Shop All Account Cart
OEM Carrier Control Transformer 50VA 120/240V–24V for YAC3680YAC306
Carrier

OEM Carrier Control Transformer 50VA 120/240V–24V for YAC3680YAC306

SKU: CARRIE-YAC3680YAC306-TRANSFORMER-P201-35150 Brand: Carrier
✓ Guaranteed to fit YAC3680YAC306 — or your money back. Terms

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Control Transformer 50VA 120/208/240V–24V for Model YAC3680YAC306

This OEM control transformer (part number P201-35150) is the factory-specified replacement for the Carrier YAC3680YAC306 HVAC system. Its sole job is to step down high-voltage line power (120/208/240 VAC) to the safe 24V AC signal that drives your system's control board, thermostat, and all low-voltage switching circuits. When this transformer fails, the entire control circuit goes dark — nothing responds, the thermostat goes blank, and the system will not start in any mode. Replacing it with the correct OEM unit restores full system communication instantly.

  • Specs: 50VA rating | Primary: 120/208/240 VAC | Secondary: 12/24 VAC | 60 Hz single-phase | CSA listed | Factory-matched to Carrier tolerances
  • OEM vs Generic: This is a genuine Carrier/Totaline factory part (P201-35150), built to exact VA and voltage specifications. Generic transformers can run at reduced VA capacity, causing nuisance tripping of the internal thermal overload — especially under peak control-circuit load.
  • Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, wire strippers, multimeter. Label all wiring connections before removal. Confirm secondary voltage reads 24V AC after installation before closing the panel.
  • Warranty: 1-year OEM factory warranty included. Ships same business day from our stocked warehouse — no backorder delays.

Compatibility: Verified fit for Carrier model YAC3680YAC306. Always confirm the primary voltage matches your unit's supply voltage (120V or 208/240V) on the data plate before ordering. Have questions about fitment? Our HVAC parts specialists verify compatibility before you buy — contact us today.

Shipping Information

  • Orders placed before 3PM CST ship same business day
  • Standard delivery: 2-5 business days
  • Express shipping available at checkout
  • Free shipping on orders over $99
  • Tracking number emailed upon shipment

Return Policy

  • 30-day returns on unused parts in original packaging
  • Electrical parts (capacitors, contactors, control boards) are final sale once installed
  • Email info@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Transformer fit my Carrier YAC3680YAC306?
Yes. This is the factory-specified OEM transformer for the Carrier YAC3680YAC306. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.
How do I replace the transformer on my Carrier YAC3680YAC306?
Difficulty: Medium (30–45 min)
Step 1: Turn off breaker. Step 2: Photo wiring connections. Step 3: Disconnect wires from old transformer. Step 4: Remove mounting hardware. Step 5: Install new transformer, reconnect wires matching voltage ratings. Step 6: Verify 24V output with multimeter.
My thermostat has no power. What failed?
Thermostat with no display = failed 24V transformer (or blown control board fuse). Check the 3A/5A fuse on the control board first ($1–$5 fix). If fuse is good but no 24V output from transformer, replace transformer.
Is this transformer compatible with Bryant or Payne too?
Many Carrier parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.
Should I use OEM or aftermarket for my Carrier transformer?
OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.
How fast does National HVAC Parts ship?
Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.
Home Shop Search Account Cart
Fitment Guaranteed
MR
Mike Rivera
HVAC Parts Specialist — Online