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OEM Payne Transformer 40VA 120V-24V for PA3PNA036000AB
Payne

OEM Payne Transformer 40VA 120V-24V for PA3PNA036000AB

SKU: PAYNE-PA3PNA036000AB-TRANSFORMER-HT01BD209 Brand: Payne

Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.

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OEM Payne Transformer 40VA 120V to 24V for Model PA3PNA036000AB

This OEM replacement transformer (part number HT01BD209) is the factory-specified control circuit transformer for the Payne PA3PNA036000AB split-system condenser. The transformer steps down the 120V line voltage to the 24V signal used by your thermostat, contactor coil, and control board. When this component fails, the entire control circuit goes dead — your thermostat will display nothing, the system will not respond to any calls for cooling, and no components will energize. If you have 120V at the unit but zero 24V output, this transformer is the most likely culprit.

  • Specs: 40VA rating | Primary voltage: 120V | Secondary voltage: 24V | OEM part number HT01BD209 | Factory-matched output for low-voltage control circuits
  • OEM vs Generic: This is a genuine OEM Payne transformer built to exact factory voltage and VA tolerances. Generic transformers can run under-rated VA, causing premature failure under normal control circuit loads — particularly when multiple accessories like UV lights or zone controllers share the circuit.
  • Install difficulty: 2/5 — Disconnect power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Label all wires before removing the old transformer. Verify 24V output with a multimeter before reassembling the panel.
  • Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Engineered as a direct OEM replacement for the Payne PA3PNA036000AB 3-ton split-system condenser. Always verify your unit's control circuit voltage requirements on the data plate or wiring diagram before ordering. Our parts specialists are available to confirm fitment — just reach out before you buy. Order today and receive same-day shipping on all in-stock components.

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 support@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Transformer fit my Payne PA3PNA036000AB?
Yes. This is the factory-specified OEM transformer for the Payne PA3PNA036000AB. 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 Payne PA3PNA036000AB?
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 Payne 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 Payne 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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