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OEM Payne Transformer 40VA 120V-24V for PA2PNB048000AA
Payne

OEM Payne Transformer 40VA 120V-24V for PA2PNB048000AA

SKU: PAYNE-PA2PNB048000AA-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 40VA Control Transformer for Model PA2PNB048000AA

This OEM step-down transformer (part# HT01BD209) is the factory-specified replacement for the Payne PA2PNB048000AA split-system air conditioner. The transformer converts 120V line voltage to the 24V AC signal that powers your thermostat, contactor coil, and all low-voltage control circuitry. When it fails, the entire control circuit goes dead — the thermostat display may go blank, the system will not respond to any calls for heating or cooling, and you may find a blown 3A fuse on the control board as a secondary symptom.

  • Specs: 40VA rated | Primary: 120V AC | Secondary: 24V AC | Class 2 low-voltage output | Factory-matched impedance for Payne PA2PNB048000AA control circuits
  • OEM vs Generic: This is a genuine OEM replacement (Carrier/ICP family part# HT01BD209). OEM transformers are wound to exact VA and impedance specs, preventing nuisance trips and protecting downstream low-voltage components. Generic units often run under-rated VA, causing overheating and premature failure.
  • Install difficulty: 2/5 — Shut off power at the disconnect and breaker before servicing. Tools needed: flathead and Phillips screwdrivers, multimeter (to verify 24V output after install), wire nuts or spade terminals. Photograph existing wiring before disconnecting. A blown fuse on the control board should be replaced simultaneously.
  • Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed for the Payne PA2PNB048000AA 4-ton split-system condenser. Verify your existing transformer's VA rating and primary/secondary voltages on the unit data plate before ordering. Part number HT01BD209 is shared across multiple Carrier, Bryant, and Payne platforms — contact our team if you need fitment confirmation before purchasing.

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 PA2PNB048000AA?
Yes. This is the factory-specified OEM transformer for the Payne PA2PNB048000AA. 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 PA2PNB048000AA?
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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