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OEM Carrier Transformer 40VA 120V/24V for C50A206052
Carrier

OEM Carrier Transformer 40VA 120V/24V for C50A206052

SKU: CARRIE-C50A206052-TRANSFORMER-HT01BD236 Brand: Carrier

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier 40VA Control Transformer HT01BD236 for Model C50A206052

This OEM step-down transformer (part number HT01BD236) is the factory-specified replacement for the Carrier C50A206052 packaged unit. The transformer converts 120V line voltage to 24V AC to power the entire low-voltage control circuit — including the thermostat, contactor coil, gas valve, and control board. When this transformer fails, absolutely nothing responds: the thermostat goes blank, the system won't call for heating or cooling, and you may find a blown 3A control fuse as a secondary symptom.

  • Specs: 40VA rating | 120V primary / 24V secondary | Class 2 transformer | Factory-matched output for stable control voltage
  • OEM vs Generic: The OEM HT01BD236 is wound to Carrier's exact VA and voltage tolerances, ensuring stable 24V output under full control circuit load. Undersized generic transformers can sag voltage during thermostat calls, causing erratic lockouts and nuisance faults.
  • Install difficulty: 2/5 — Shut off all power to the unit before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Confirm output voltage after installation before closing the control panel. Always label or photograph wiring before disconnecting.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for Carrier model C50A206052 commercial rooftop/packaged units. Verify primary voltage (120V) and VA rating on your existing transformer's label before ordering to confirm fitment. Our parts team is available to verify compatibility before you purchase — order with confidence.

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 C50A206052?
Yes. This is the factory-specified OEM transformer for the Carrier C50A206052. 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 C50A206052?
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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