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OEM Carrier Control Transformer 40VA 208/240V–24V — SUBCLR50HJ402461
Carrier

OEM Carrier Control Transformer 40VA 208/240V–24V — SUBCLR50HJ402461

SKU: CARRIE-SUBCLR50HJ402461-TRANSFORMER-HT01BD209 Brand: Carrier
✓ Guaranteed to fit SUBCLR50HJ402461 — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Control Transformer 40VA 208/240V to 24V for Model SUBCLR50HJ402461

This genuine OEM control transformer (part number HT01BD209) is the factory-specified replacement for the Carrier SUBCLR50HJ402461. The transformer steps down line voltage from 208/240V to the 24V AC required to power the low-voltage control circuit — including the thermostat, contactor coil, gas valve, and control board. When this part fails, the entire control circuit goes dark: the thermostat goes blank, the system becomes completely unresponsive, or fuses blow repeatedly. Replacing a failed transformer restores full system operation immediately.

  • Specs: 40VA | Primary: 208/240V | Secondary: 24V | 50/60 Hz | OEM Part# HT01BD209 | Replaces HT01BD207, HT01CN232, 9076-00
  • OEM vs Generic: The OEM transformer is wound to exact factory tolerances, ensuring stable 24V output under full VA load. Generic substitutes can exhibit voltage sag under peak demand, causing nuisance lockouts and premature control board failure.
  • Install Difficulty: 2/5 — Disconnect all power at the breaker before beginning. Tools needed: flathead and Phillips screwdriver, multimeter (confirm 0V before touching wiring), wire nuts or terminal connectors. Photograph or label all wiring connections before removal. Check for a blown fuse or short in the secondary circuit before installing the new transformer — an uncleared short will destroy the replacement.
  • Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Engineered as the direct OEM replacement for Carrier model SUBCLR50HJ402461. Also replaces legacy Carrier transformer part numbers HT01BD207, HT01CN232, and 9076-00. Always verify primary voltage (208V or 240V) against your unit's data plate before ordering. Have a question about fitment? Our HVAC parts specialists verify compatibility before you order — reach out before placing your order for total peace of mind.

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 OEM Carrier Control Transformer 40VA 208/240V–24V — SUBCLR50HJ402461?
Yes. This is the factory-specified OEM transformer for the Carrier OEM Carrier Control Transformer 40VA 208/240V–24V — SUBCLR50HJ402461. 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 OEM Carrier Control Transformer 40VA 208/240V–24V — SUBCLR50HJ402461?
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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