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OEM Carrier Transformer 120V–24V 40VA for PH3GNA060000AB
Carrier

OEM Carrier Transformer 120V–24V 40VA for PH3GNA060000AB

SKU: CARRIE-PH3GNA060000AB-TRANSFORMER-HT01BD242 Brand: Carrier
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Texas CMBL #19328542014
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OEM Carrier Control Transformer HT01BD242 for Model PH3GNA060000AB

This OEM step-down transformer is the factory-specified replacement for the Carrier PH3GNA060000AB packaged unit. It converts 120V line voltage to the 24V signal required by the thermostat, control board, and all low-voltage components in your system. When this transformer fails, the entire control circuit goes dead — the thermostat goes blank, the system won't respond to any call for heating or cooling, and no error codes are displayed because the board itself has lost power.

  • Specs: OEM Part Number HT01BD242 | 120V primary / 24V secondary | 40VA rated | Class 2 insulated windings | Factory-matched output for Carrier control circuits
  • OEM vs Generic: This OEM transformer is wound to Carrier's exact VA rating and voltage tolerance. Generic transformers can run under-rated VA, causing premature burnout under peak demand — especially in two-stage or communicating systems that draw more sustained 24V current.
  • Install difficulty: 2/5 — Always shut off power at the breaker and disconnect service before touching any wiring. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Photograph all wiring connections before removal. Verify 24V output after installation before restoring the control circuit.
  • Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Engineered for the Carrier PH3GNA060000AB packaged unit. Always confirm the voltage rating and VA output on your unit's data plate before ordering. If you need fitment assistance, our HVAC parts specialists are standing by to verify compatibility before you buy — order today for same-day shipping!

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 PH3GNA060000AB?
Yes. This is the factory-specified OEM transformer for the Carrier PH3GNA060000AB. 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 PH3GNA060000AB?
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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