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OEM Carrier Transformer 40VA 120V-24V for C50A306062
Carrier

OEM Carrier Transformer 40VA 120V-24V for C50A306062

SKU: CARRIE-C50A306062-TRANSFORMER-HT01BD236 Brand: Carrier

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier 40VA Control Transformer for Model C50A306062

This OEM control transformer is the factory-specified replacement for the Carrier C50A306062 commercial packaged unit. The transformer steps down line voltage (120V) to the 24V signal required by your thermostat, control board, contactor coil, and all low-voltage safety circuits. When this component fails, the entire control circuit goes dark — the thermostat displays nothing, the system won't respond to any call for heating or cooling, and fault codes may not even appear because there's no power to the board.

  • Specs: 40VA rating | 120V primary / 24V secondary | Replaces OEM part numbers HT01BD236 and HT01BD702 | Factory-matched output voltage tolerance for reliable low-voltage circuit operation
  • OEM vs Generic: OEM transformers are wound to exact VA and voltage specs for your unit. Undersized or off-tolerance generic units can overheat, trip the internal fuse repeatedly, or deliver insufficient current to hold contactor coils closed — leading to misdiagnosed control board failures.
  • Install difficulty: 2/5 — Disconnect power at the breaker and verify with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, wire nuts or spade connectors, multimeter. Label all wires before disconnecting. Check and replace any blown 3A control fuse at the same time.
  • Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier C50A306062 commercial rooftop/packaged unit. Cross-references OEM part numbers HT01BD236 and HT01BD702. Verify your unit's control circuit voltage requirements on the data plate before ordering. Not sure about fitment? Our HVAC parts specialists confirm compatibility before you buy — call or chat today and get your unit 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 C50A306062?
Yes. This is the factory-specified OEM transformer for the Carrier C50A306062. 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 C50A306062?
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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