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OEM Carrier Transformer 40VA 120V/24V for GB3AAV060115AEJA
Carrier

OEM Carrier Transformer 40VA 120V/24V for GB3AAV060115AEJA

SKU: CARRIE-GB3AAV060115AEJA-TRANSFORMER-HT01BC116 Brand: Carrier

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Texas CMBL #19328542014
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OEM Carrier 40VA Control Transformer for Model GB3AAV060115AEJA — Part# HT01BC116

This OEM control transformer (part# HT01BC116) is the factory-specified replacement for the Carrier GB3AAV060115AEJA gas furnace. The transformer steps down 120V line voltage to the 24V signal voltage required by your thermostat, control board, gas valve, and all low-voltage control circuits. When the transformer fails, the entire control system goes dark — the thermostat loses power, the furnace won't respond to any call for heat or cooling, and in many cases the system appears completely dead. A failed transformer is often misdiagnosed as a bad control board, making this an important first diagnostic check.

  • Specs: 40VA rated | 120V primary / 24V secondary | Class 2 insulation | Factory-matched to Carrier GB3AAV060115AEJA control circuit requirements | OEM part number HT01BC116
  • OEM vs Generic: OEM transformers are wound to exact VA and voltage tolerances for your specific control board's current draw. Undersized or off-tolerance generic units can overheat, trip the internal thermal fuse, or deliver unstable 24V output — causing erratic lockouts and nuisance fault codes.
  • Install difficulty: 2/5 — Shut off power at the disconnect and verify zero voltage with a multimeter before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, needle-nose pliers. Photograph or label all wiring connections before disconnecting. Confirm secondary voltage reads 24–28V AC after installation before closing the cabinet.
  • Warranty: 1-year OEM factory warranty against defects in materials and workmanship. In-stock and ships same business day from our warehouse.

Compatibility: Designed as a direct OEM replacement for the Carrier GB3AAV060115AEJA gas furnace. Always verify the existing transformer's VA rating and primary/secondary voltages on your unit's wiring diagram or data plate before ordering. Our fitment team is available to confirm compatibility prior to purchase — same-day shipping on all in-stock orders placed before 3 PM.

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 GB3AAV060115AEJA?
Yes. This is the factory-specified OEM transformer for the Carrier GB3AAV060115AEJA. 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 GB3AAV060115AEJA?
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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