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OEM Carrier Transformer 40VA 120V to 24V for C4850C48ZN060600 — Ships Today
Carrier

OEM Carrier Transformer 40VA 120V to 24V for C4850C48ZN060600 — Ships Today

SKU: CARRIE-C4850C48ZN060600-TRANSFORMER-HT01BD236 Brand: Carrier
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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Control Transformer 40VA 120V/24V for Model C4850C48ZN060600

This is the factory OEM replacement control transformer (part number HT01BD236) for the Carrier C4850C48ZN060600 packaged unit. The transformer steps down line voltage from 120V to the 24V AC signal that powers your thermostat, control board, contactor coil, and all low-voltage control circuits. When this component fails, the entire control circuit goes dead — the thermostat goes blank, the system will not respond to any call for heating or cooling, and no safety or operating sequence can be initiated. If your unit is completely unresponsive despite confirmed line power, the transformer is one of the first components to test.

  • Specs: Input: 120V AC | Output: 24V AC | VA Rating: 40VA | OEM Part Number: HT01BD236 | Replaces factory original unit exactly
  • OEM vs Generic: OEM transformers are wound and insulated to Carrier's exact VA rating and thermal protection specifications. Undersized or off-tolerance generic transformers can overheat, trip their internal resettable fuse repeatedly, or fail prematurely — leaving you chasing a ghost fault in the control system.
  • Install Difficulty: 2/5 — Shut off all power to the unit before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Confirm 24V output after install before closing the panel. Always label or photograph low-voltage wiring connections prior to disconnecting.
  • Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed and factory-matched for the Carrier C4850C48ZN060600 packaged unit. Always verify your existing transformer's input/output voltage and VA rating against your unit's data plate before ordering to confirm fitment. Our parts specialists are available to verify compatibility before you buy — no guesswork required. Order today and your part ships the same business day.

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 C4850C48ZN060600 — Ships Today?
Yes. This is the factory-specified OEM transformer for the Carrier C4850C48ZN060600 — Ships Today. 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 C4850C48ZN060600 — Ships Today?
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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