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OEM Carrier Transformer 40VA 120V/24V for C50A303062
Carrier

OEM Carrier Transformer 40VA 120V/24V for C50A303062

SKU: CARRIE-C50A303062-TRANSFORMER-HT01BD236 Brand: Carrier

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Control Transformer 40VA for Model C50A303062

This OEM control transformer is the factory-specified replacement for the Carrier C50A303062 commercial rooftop unit. The transformer steps down 120V line voltage to 24V to power the entire control circuit — including the thermostat, contactor coils, and control board. When it fails, the result is a completely unresponsive system: the thermostat goes blank, no relays energize, and the unit will not start in any mode. OEM part numbers HT01BD236 and HT01BD702 are direct factory replacements for this application.

  • Specs: 40VA capacity | 120V primary / 24V secondary | Class 2 control circuit transformer | Factory-matched impedance and insulation rating for Carrier rooftop applications
  • OEM vs Generic: OEM transformers are wound to exact VA and voltage tolerances required by Carrier's control boards. Undersized or off-tolerance generic units can sag under load, causing nuisance lockouts, erratic control behavior, or premature board failure.
  • Install difficulty: 2/5 — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or terminal connectors. Confirm secondary voltage reads 24–28V AC after installation before restoring full power.
  • Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship the same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier C50A303062 commercial packaged rooftop unit. Cross-references OEM part numbers HT01BD236 and HT01BD702. Always verify your unit's control voltage and VA requirements on the data plate before ordering. Our fitment team is available to confirm compatibility before you buy — same-day shipping ensures your unit is 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 C50A303062?
Yes. This is the factory-specified OEM transformer for the Carrier C50A303062. 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 C50A303062?
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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