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OEM Payne Transformer 40VA 120V-24V for PA3PNA024000AA
Payne

OEM Payne Transformer 40VA 120V-24V for PA3PNA024000AA

SKU: PAYNE-PA3PNA024000AA-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/24V for Model PA3PNA024000AA

This is the OEM factory-specified control transformer (part# HT01BD209) for the Payne PA3PNA024000AA air conditioner. The transformer steps down 120V line voltage to the 24V signal voltage that powers your thermostat, contactor coil, and control board. When this transformer fails, the entire low-voltage control circuit loses power — your thermostat goes blank, the system refuses to respond to any command, and neither heating nor cooling can be initiated. It is one of the first components to check when nothing in the system responds.

  • Specs: 40VA capacity | 120V primary / 24V secondary | OEM part number HT01BD209 | Factory-matched output tolerance for stable control circuit operation
  • OEM vs Generic: This OEM unit meets Payne's exact VA rating and insulation class. Undersized or off-tolerance generic transformers can overheat, blow internal fuses, or deliver unstable 24V output that causes erratic thermostat and contactor behavior.
  • Install difficulty: 2/5 — Shut off all power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label or photograph all wire connections before removal. Verify 24V output with a multimeter after installation before restoring full system power.
  • Warranty: 1-year OEM factory warranty. In-stock units ship same business day from our warehouse.

Compatibility: Designed as the direct OEM replacement for the Payne PA3PNA024000AA split-system air conditioner. Verify your existing transformer's primary and secondary voltage ratings on the unit data plate before ordering. If you're unsure of fitment, our parts specialists can confirm compatibility before you purchase — same-day shipping available on all in-stock orders.

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 PA3PNA024000AA?
Yes. This is the factory-specified OEM transformer for the Payne PA3PNA024000AA. 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 PA3PNA024000AA?
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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