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OEM Carrier Transformer 40VA 120V/24V for C50A306061
Carrier

OEM Carrier Transformer 40VA 120V/24V for C50A306061

SKU: CARRIE-C50A306061-TRANSFORMER-HT01BD236 Brand: Carrier
✓ Guaranteed to fit C50A306061 — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Transformer 40VA 120V to 24V Control Circuit for Model C50A306061

This OEM Carrier transformer (part number HT01BD236) is the factory-specified replacement for the C50A306061 commercial rooftop packaged unit. The transformer steps down line voltage from 120V to the 24V signal used by your thermostat, control board, and all low-voltage switching components. When this part fails, the entire control circuit goes dead — the thermostat goes blank, the system refuses to respond to any call for heating or cooling, and no fault codes are generated because even the board has no power.

  • Specs: 40VA rating | 120V primary / 24V secondary | Class 2 transformer | Factory OEM part number HT01BD236 | Engineered to exact Carrier tolerances for the C50A306061 platform
  • OEM vs Generic: OEM transformers maintain precise 24V output under varying load conditions, protecting your control board and thermostat from voltage fluctuations. Generic units often produce unstable output that causes nuisance lockouts or premature board failure.
  • Install difficulty: 2/5 — Disconnect power at the breaker and verify zero voltage before servicing. Tools needed: flathead and Phillips screwdriver, multimeter, wire nuts or terminal connectors. Document all low-voltage wiring connections before removal.
  • Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Orders placed before cutoff ship same business day from our stocked warehouse.

Compatibility: Designed specifically for the Carrier C50A306061 commercial rooftop unit. Verify your existing transformer's VA rating and primary/secondary voltages on the data plate or wiring diagram before ordering to confirm fitment. Our parts specialists are available to verify compatibility before you purchase — same-day shipping means you get back up and running 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 $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 C50A306061?
Yes. This is the factory-specified OEM transformer for the Carrier C50A306061. 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 C50A306061?
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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