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OEM Carrier Transformer 40VA 120V/24V for P110LBP2217A
Carrier

OEM Carrier Transformer 40VA 120V/24V for P110LBP2217A

SKU: CARRIE-P110LBP2217A-TRANSFORMER-P201-2201 Brand: Carrier

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier 40VA Control Transformer for Model P110LBP2217A

This is the factory-specified OEM replacement control transformer (part number P201-2201) for the Carrier P110LBP2217A. The transformer steps down 120V line voltage to the 24V signal required by your thermostat, control board, contactor coil, and all low-voltage control circuit components. When this transformer fails, the entire control circuit goes dark — your thermostat loses power, the system won't respond to calls for heating or cooling, and nothing works. It is one of the first components to check when diagnosing a completely unresponsive unit.

  • Specs: 40VA rating | Primary: 120V | Secondary: 24V | OEM part number P201-2201 | Factory-matched impedance and thermal protection
  • OEM vs Generic: The OEM Carrier transformer is wound to exact factory VA and voltage tolerances, ensuring stable 24V output under full control circuit load. Undersized or off-tolerance generic transformers can overheat, trip internal breakers, or deliver inconsistent voltage that causes erratic board behavior.
  • Install difficulty: 2/5 — Shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or terminal connectors. Photograph all wiring connections before removal. Verify 24V output at secondary terminals after installation before restoring full system power.
  • Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed as the direct OEM replacement for Carrier model P110LBP2217A. Always verify your unit's control circuit voltage and VA requirements on the data plate or wiring diagram before ordering. Our parts specialists are available to confirm fitment — order with confidence and get your system back online fast.

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 $75
  • 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 P110LBP2217A?
Yes. This is the factory-specified OEM transformer for the Carrier P110LBP2217A. 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 P110LBP2217A?
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.
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Mike Rivera
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