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OEM Carrier Transformer 40VA 208/240V–24V for PY3GNA060115NA
Carrier

OEM Carrier Transformer 40VA 208/240V–24V for PY3GNA060115NA

SKU: CARRIE-PY3GNA060115NA-TRANSFORMER-HT01BD209 Brand: Carrier

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Control Transformer 40VA 208/240V to 24V — Model PY3GNA060115NA

The Carrier HT01BD209 is the factory-specified control transformer for the PY3GNA060115NA packaged gas unit. This transformer steps high-line voltage (208/240V) down to the 24V signal voltage that powers the entire control circuit — thermostat, gas valve, inducer relay, and all low-voltage safety switches. When this transformer fails, nothing works: no fan, no heat, no response from the thermostat — because there is no control voltage present anywhere in the system. A blown fuse on the secondary side is often the first clue.

  • Specs: Input 208/240V AC | Output 24V AC | 40VA power rating | 50/60Hz | OEM part number HT01BD209 | Factory foot-mount configuration
  • OEM vs Generic: OEM transformers are wound to exact VA and voltage tolerances. Undersized aftermarket units overheat under full control-circuit load, leading to repeated nuisance fuse failures and premature burnout. This is the factory part — no surprises.
  • Install difficulty: 2/5 — Shut off power at the disconnect before starting. Discharge any residual voltage, then document all low-voltage wire connections with a photo before removing the old transformer. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Verify 24V output after installation before energizing the full system.
  • Warranty: 1-year OEM manufacturer warranty. Ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY3GNA060115NA packaged gas unit. Always verify input voltage against your unit's data plate — 208V and 240V taps are both supported. If you are unsure of fitment, contact our team and we will confirm before you order. In stock and ready to ship 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 info@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Transformer fit my Carrier PY3GNA060115NA?
Yes. This is the factory-specified OEM transformer for the Carrier PY3GNA060115NA. 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 PY3GNA060115NA?
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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