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OEM Carrier Control Transformer 40VA 208/230V–24V for PY3PPA030060NB
Carrier

OEM Carrier Control Transformer 40VA 208/230V–24V for PY3PPA030060NB

SKU: CARRIE-PY3PPA030060NB-TRANSFORMER-HT01BD209 Brand: Carrier
✓ Guaranteed to fit PY3PPA030060NB — or your money back. Terms

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Control Transformer 40VA 208/230V to 24V for Model PY3PPA030060NB

This OEM control transformer (part # HT01BD209) is the factory-specified replacement for the Carrier PY3PPA030060NB HVAC system. The transformer steps down line voltage from 208/230V to the 24V low-voltage signal that powers your thermostat, control board, and all safety circuit components. When this part fails, the entire control circuit goes dark — symptoms include a completely unresponsive thermostat, a system that won't respond to any call for heating or cooling, or tripped 24V fuses caused by a shorted transformer secondary winding.

  • Specs: 208/230V Primary | 24V Secondary | 40VA rated | 50/60Hz | Class 2 control transformer | Replaces OEM part numbers HT01BD207, HT01CN232, and 9076-00
  • OEM vs Generic: OEM transformers are wound and insulated to Carrier's exact VA and impedance specs. Undersized or off-tolerance generic units can overheat, blow fuses repeatedly, or fail to supply adequate current to the control board under load — leading to misdiagnosis and repeat service calls.
  • Install difficulty: 2/5 — Shut off all power to the unit before starting. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label and photograph all low-voltage wiring before disconnecting. After installation, verify 24–28V AC output at the secondary terminals under load before re-energizing the full system.
  • Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before the cutoff.

Compatibility: Engineered as the direct OEM replacement for Carrier model PY3PPA030060NB. Also replaces legacy Carrier part numbers HT01BD207, HT01CN232, and 9076-00. Confirm 208/230V primary voltage on your unit's data plate before ordering. Our fitment team is available to verify compatibility before you buy.

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 PY3PPA030060NB?
Yes. This is the factory-specified OEM transformer for the Carrier PY3PPA030060NB. 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 PY3PPA030060NB?
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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