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OEM Carrier Control Transformer 40VA 208/230V–24V for PY3PNA060115AA
Carrier

OEM Carrier Control Transformer 40VA 208/230V–24V for PY3PNA060115AA

SKU: CARRIE-PY3PNA060115AA-TRANSFORMER-HT01BD209 Brand: Carrier
✓ Guaranteed to fit PY3PNA060115AA — 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 — HT01BD209 for Model PY3PNA060115AA

This genuine OEM control transformer is the factory-specified replacement for the Carrier PY3PNA060115AA packaged unit. The transformer steps down line voltage (208/230V) to the 24V AC signal that powers your thermostat, control board, and all low-voltage switching circuits. When this part fails, the entire control circuit goes dark — you'll see a completely unresponsive thermostat, no fan, no heat, and no cooling, even though line power is present at the unit.

  • Specs: 40VA rating | 208/230V primary input | 24V secondary output | 50/60 Hz | Part No. HT01BD209 | Replaces HT01BD207, HT01CN232, 9076-00
  • OEM vs Generic: OEM transformers are wound to exact VA and impedance tolerances for your Carrier unit. Undersized or off-spec generic transformers can overheat, trip thermal cutoffs, and introduce voltage sag that confuses control boards and causes nuisance lockouts.
  • Install difficulty: 2/5 — Disconnect all power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label all low-voltage wires before removing the old transformer. Confirm 24V output with a multimeter before buttoning up the panel.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Direct OEM fit for Carrier model PY3PNA060115AA. This transformer also serves as a verified replacement for systems previously using HT01BD207, HT01CN232, or 9076-00. Always confirm line voltage on your unit's data plate matches the 208/230V primary before ordering. Have a fitment question? Our HVAC parts specialists verify compatibility before you buy — reach out before placing your 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 PY3PNA060115AA?
Yes. This is the factory-specified OEM transformer for the Carrier PY3PNA060115AA. 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 PY3PNA060115AA?
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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