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OEM Carrier Control Transformer 40VA 208/230V–24V for PY3PPA060090NB
Carrier

OEM Carrier Control Transformer 40VA 208/230V–24V for PY3PPA060090NB

SKU: CARRIE-PY3PPA060090NB-TRANSFORMER-HT01BD209 Brand: Carrier
✓ Guaranteed to fit PY3PPA060090NB — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Control Transformer 40VA 208/230V to 24V for Model PY3PPA060090NB

This genuine OEM control transformer (part #HT01BD209) is the factory-specified replacement for the Carrier PY3PPA060090NB packaged unit. The transformer steps down 208/230V line voltage to the 24V DC signal that powers your thermostat, control board, and all low-voltage control circuits. When this part fails, the entire control circuit goes dark — resulting in a completely unresponsive thermostat, no system call, or tripped secondary fuses. Replacing it with the correct OEM unit restores reliable voltage conversion immediately.

  • Specs: 40VA rated | 208/230V primary input | 24V secondary output | 50/60 Hz | Replaces superseded part numbers HT01BD207, HT01CN232, and 9076-00
  • OEM vs Generic: OEM transformers are wound to exact Carrier factory tolerances, ensuring stable 24V output under full VA load. Generic units may deliver inconsistent secondary voltage, causing nuisance lockouts, board resets, or premature control board failure.
  • Install difficulty: 2/5 — Shut off all power at the disconnect before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter to verify 24V output post-install. Photograph all wiring connections before disconnecting. Mount to existing bracket and reconnect primary and secondary leads to matching terminals.
  • Warranty: 1-year OEM factory warranty. Ships same business day from our stocked warehouse.

Compatibility: Designed for the Carrier PY3PPA060090NB packaged gas/electric unit. Also fits Bryant and Payne models using the same transformer footprint — verify your data plate shows 208/230V primary input before ordering. Our fitment team is available to confirm compatibility before you buy. Order now — in stock and ships 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 $99
  • 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 info@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Transformer fit my Carrier PY3PPA060090NB?
Yes. This is the factory-specified OEM transformer for the Carrier PY3PPA060090NB. 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 Carrier PY3PPA060090NB?
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 Carrier 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 Carrier 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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Mike Rivera
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