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OEM Carrier Control Transformer 40VA 208/230V–24V for PY3PNA060115NA
Carrier

OEM Carrier Control Transformer 40VA 208/230V–24V for PY3PNA060115NA

SKU: CARRIE-PY3PNA060115NA-TRANSFORMER-HT01BD209 Brand: Carrier
✓ Guaranteed to fit PY3PNA060115NA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier 40VA Control Transformer HT01BD209 for Model PY3PNA060115NA

This OEM control transformer is the factory-specified replacement for the Carrier PY3PNA060115NA packaged unit. The transformer steps down 208/230V line voltage to the 24V signal that powers your thermostat, control board, and every low-voltage component in the system. When this part fails, the entire control circuit loses power — the result is a completely unresponsive system: no heat, no cooling, no fan, and no error codes on the board. If your system is completely dead and your 24V fuse is intact, this transformer is the first component to test.

  • Specs: 40VA rating | 208/230V primary input | 24V secondary output | 50/60 Hz | Compact footprint: 3.5" L × 2.2" W × 1.9" H | Replaces OEM part numbers HT01BD207, HT01CN232, and 9076-00
  • OEM vs Generic: OEM transformers are wound to exact factory VA and voltage tolerances. Undersized aftermarket units can overheat the secondary winding, trip thermal protection, or allow voltage sag that causes nuisance lockouts on sensitive control boards.
  • Install difficulty: 2/5 — Shut off power at the breaker and confirm zero voltage before touching any terminals. Tools needed: flathead and Phillips screwdrivers, multimeter (to confirm 24V output after installation), wire nuts or push-in connectors. Photograph all wiring before disconnecting.
  • Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our warehouse.

Compatibility: Engineered for the Carrier PY3PNA060115NA packaged unit. Verify your existing transformer's VA rating and primary voltage on the unit data plate before ordering. Cross-reference OEM part numbers HT01BD207, HT01CN232, and 9076-00 are all superseded by HT01BD209. Questions about fitment? Our HVAC parts team confirms compatibility before you order.

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 PY3PNA060115NA?
Yes. This is the factory-specified OEM transformer for the Carrier PY3PNA060115NA. 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 PY3PNA060115NA?
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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