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OEM Payne Transformer 40VA 120/24V for PA1ZPA048000ABAA
Payne

OEM Payne Transformer 40VA 120/24V for PA1ZPA048000ABAA

SKU: PAYNE-PA1ZPA048000ABAA-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 Control Transformer 40VA 120V/24V for Model PA1ZPA048000ABAA

This is the OEM factory-replacement transformer (part number HT01BD209) designed specifically for the Payne PA1ZPA048000ABAA packaged air conditioning unit. The transformer steps down line voltage (120V) to 24V AC to power the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When the transformer fails, nothing in the system responds: the thermostat goes blank, the contactor won't pull in, and the unit sits completely dead. A failed transformer is often caused by a shorted control wire, so always inspect low-voltage wiring before installing the replacement.

  • Specs: 40VA rating | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01BD209 | Factory-matched for Payne PA1ZPA048000ABAA
  • OEM vs Generic: This OEM transformer is wound to exact VA and voltage specifications. Generic transformers may run under-rated VA, causing overheating, nuisance tripping of the internal fuse, and premature failure under normal control-circuit loads.
  • Install difficulty: 2/5 — Disconnect power at the disconnect box before beginning. Tools needed: flathead and Phillips screwdrivers, wire strippers, multimeter, and wire nuts. Verify input and output voltages with a multimeter after installation before restoring full power.
  • Warranty: 1-year OEM factory warranty. In stock and ships the same business day from our warehouse.

Compatibility: Engineered for the Payne PA1ZPA048000ABAA 4-ton packaged air conditioning unit. Confirm your existing transformer's VA rating and voltage markings on the data plate or unit wiring diagram before ordering. Our parts team is available to verify fitment — order with confidence and get back up and running today.

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 PA1ZPA048000ABAA?
Yes. This is the factory-specified OEM transformer for the Payne PA1ZPA048000ABAA. 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 PA1ZPA048000ABAA?
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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