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OEM Carrier Control Transformer 40VA 208/230V–24V for PY3PPA060115AA
Carrier

OEM Carrier Control Transformer 40VA 208/230V–24V for PY3PPA060115AA

SKU: CARRIE-PY3PPA060115AA-TRANSFORMER-HT01BD209 Brand: Carrier
✓ Guaranteed to fit PY3PPA060115AA — 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 PY3PPA060115AA

This genuine OEM Carrier control transformer (part number HT01BD209) is the factory-specified replacement for the Carrier PY3PPA060115AA packaged unit. The transformer steps down 208/230V line voltage to the 24V signal used by your thermostat, control board, contactor coil, and every other low-voltage component in the system. When it fails, nothing works — the thermostat goes dark, the system won't respond to any call for heating or cooling, and you may measure zero voltage at the 24V secondary terminals. Replacing the transformer is typically the fastest, lowest-cost fix to restore full system operation.

  • Specs: 208/230V primary | 24V secondary | 40VA rating | 50/60 Hz | OEM part number HT01BD209 | Also cross-references 4000A46E07AE28, HT01BD207, HT01CN232, 9076-00
  • OEM vs Generic: This is a genuine Carrier OEM transformer wound to exact factory VA and voltage tolerances. Generic aftermarket units can run outside tolerance, causing nuisance tripping of low-voltage fuses or premature control board failure — not a risk worth taking on a $200+ board.
  • Install difficulty: 2/5 — Turn off power at the disconnect and breaker before touching any wiring. Tools needed: flathead and Phillips screwdrivers, multimeter (to verify 0V before touching, and 24V after install), wire nuts or quick-connect terminals. Always photograph or label all wiring before disconnecting. The transformer mounts to the blower compartment panel — typically two screws.
  • Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before 3PM local time.

Compatibility: Direct OEM replacement for Carrier model PY3PPA060115AA packaged gas/electric unit. Verify primary voltage on your unit's data plate (208V or 230V) before ordering — this transformer supports both. Not sure it fits? Our HVAC parts specialists verify fitment before you order. Order now and 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 $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 PY3PPA060115AA?
Yes. This is the factory-specified OEM transformer for the Carrier PY3PPA060115AA. 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 PY3PPA060115AA?
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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