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OEM Carrier Control Transformer 40VA 208/240V–24V for PY3PPA060115NA
Carrier

OEM Carrier Control Transformer 40VA 208/240V–24V for PY3PPA060115NA

SKU: CARRIE-PY3PPA060115NA-TRANSFORMER-HT01BD209 Brand: Carrier
✓ Guaranteed to fit PY3PPA060115NA — or your money back. Terms

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Control Transformer 40VA 208/240V to 24V — HT01BD209 for Model PY3PPA060115NA

This is the factory OEM control transformer for the Carrier PY3PPA060115NA packaged unit. The transformer steps down 208/240V line voltage to the 24V DC signal that powers your thermostat, control board, gas valve, and every low-voltage component in the system. When this transformer fails, the entire control circuit goes dark — the thermostat goes blank, the system refuses to respond to any call for heating or cooling, and no fault codes appear because there is no power to generate them. If you measure 0V AC on the 24V secondary terminals, this part is your fix.

  • Specs: 208/240V primary input | 24V secondary output | 40VA power rating | 50/60 Hz | Compact form factor: 3.5" L × 2.2" W × 1.9" H | Replaces HT01BD207, HT01CN232, 9076-00
  • OEM vs Generic: The OEM HT01BD209 is wound to exact factory VA and voltage tolerance specifications. Generic transformers may run under-rated VA loads, causing overheating, nuisance tripping of the internal thermal fuse, and premature failure — especially in packaged units with high low-voltage circuit demand.
  • Install difficulty: 2/5 — Shut off all power at the disconnect before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter (to confirm 0V before touching wiring), needle-nose pliers. Document or photograph all wire connections on primary and secondary terminals before disconnecting. Re-energize and confirm ~24V AC on secondary terminals before buttoning up the panel.
  • Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Direct OEM replacement for Carrier model PY3PPA060115NA packaged gas/electric units. Also compatible with select Bryant and Payne equipment sharing the same transformer spec — verify 208/240V primary and 40VA rating on your unit's data plate before ordering. Not sure if this is your part? Contact our fitment team before you order — we verify compatibility at no charge.

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 PY3PPA060115NA?
Yes. This is the factory-specified OEM transformer for the Carrier PY3PPA060115NA. 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 PY3PPA060115NA?
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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