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OEM Carrier 40VA Transformer 24V Control Circuit for GB1AAV060090AAJA
Carrier

OEM Carrier 40VA Transformer 24V Control Circuit for GB1AAV060090AAJA

SKU: CARRIE-GB1AAV060090AAJA-TRANSFORMER-HT01BC116 Brand: Carrier

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OEM Carrier 40VA Control Circuit Transformer for Model GB1AAV060090AAJA

This is the OEM factory-replacement control transformer (part number HT01BC116) for the Carrier GB1AAV060090AAJA gas furnace. The transformer steps down 120V line voltage to the 24V signal required by the thermostat, control board, gas valve, and all low-voltage control components. When it fails, the entire control circuit goes dark — your thermostat goes blank, the furnace will not respond to any call for heat or cooling, and you may blow the low-voltage fuse repeatedly. A failed transformer is one of the most commonly misdiagnosed furnace faults, often confused with a bad control board.

  • Specs: 40VA rated | 120V primary / 24V secondary | Class 2 transformer | Factory-matched OEM part number HT01BC116 | Direct plug-in/screw-mount fitment
  • OEM vs Generic: OEM transformers are wound to exact VA and impedance specs for the GB1AAV060090AAJA control board. Undersized or off-spec generic units can overheat, nuisance-trip on high-demand heating cycles, or damage downstream low-voltage components.
  • Install difficulty: 2/5 — Shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, needle-nose pliers. Verify incoming 120V is dead before touching primary wires. Photograph all wiring connections before disconnecting. Swap one wire at a time to avoid miswiring.
  • Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Designed specifically for the Carrier GB1AAV060090AAJA gas furnace using OEM part number HT01BC116. Confirm your unit's control transformer is rated 40VA 120V/24V by checking the data plate on your existing transformer before ordering. Our parts specialists are available to verify fitment — order with confidence and get your furnace back online fast.

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 GB1AAV060090AAJA?
Yes. This is the factory-specified OEM transformer for the Carrier GB1AAV060090AAJA. 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 GB1AAV060090AAJA?
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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