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OEM Payne Transformer 40VA 120V/24V for PA3PPA030000AB
Payne

OEM Payne Transformer 40VA 120V/24V for PA3PPA030000AB

SKU: PAYNE-PA3PPA030000AB-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 PA3PPA030000AB

This OEM replacement transformer (part number HT01BD209) is the factory-specified control circuit transformer for the Payne PA3PPA030000AB packaged air conditioning unit. The transformer steps down 120V line voltage to the 24V AC signal that powers your thermostat, control board, contactor coil, and all low-voltage system controls. When this component fails, the entire control circuit goes dead — your thermostat goes blank, the system refuses to respond to any call for cooling or heating, and no fault codes appear because there is no power to generate them.

  • Specs: 40VA rating | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01BD209 | Factory-matched for Payne PA3PPA030000AB
  • OEM vs Generic: This is a genuine OEM transformer built to exact Payne factory specifications. Generic transformers may share similar VA ratings but often differ in mounting footprint, lead length, and thermal protection thresholds — risking premature failure or fitment issues.
  • Install difficulty: 2/5 — Disconnect power at the breaker and verify zero voltage with a multimeter before starting. Tools needed: flat-head and Phillips screwdrivers, wire stripper, multimeter. Label all wires before disconnecting and note polarity. A blown transformer may indicate a downstream short — check all 24V wiring before powering up the new unit.
  • Warranty: 1-year OEM factory warranty against defects. Orders placed by 3PM ship same business day from our HVAC parts warehouse.

Compatibility: Designed specifically for the Payne PA3PPA030000AB packaged unit. Verify your existing transformer's VA rating and primary/secondary voltages on the unit's data plate or wiring diagram before ordering. Our parts specialists are available to confirm fitment prior to purchase — same-day shipping ensures your system is 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 support@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Transformer fit my Payne PA3PPA030000AB?
Yes. This is the factory-specified OEM transformer for the Payne PA3PPA030000AB. 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 PA3PPA030000AB?
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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