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OEM Carrier Transformer 40VA 120V/24V for FV4ANF002000ABAA
Carrier

OEM Carrier Transformer 40VA 120V/24V for FV4ANF002000ABAA

SKU: CARRIE-FV4ANF002000ABAA-TRANSFORMER-HT01CN236 Brand: Carrier

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Transformer 40VA 120V to 24V for Model FV4ANF002000ABAA

This OEM replacement transformer (part# HT01CN236) is the factory-specified control circuit transformer for the Carrier FV4ANF002000ABAA air handler. The transformer steps down 120V line voltage to the 24V AC signal that powers your thermostat, control board, contactor coil, and all low-voltage switching logic. When the transformer fails — often due to a shorted control wire, miswired thermostat, or age — the entire control circuit goes dark: no thermostat response, no fan, no heat or cool. Replacing it with the correct OEM unit restores the full 24V control circuit instantly.

  • Specs: 40VA rating | 120V primary / 24V secondary | Class 2 output | OEM part number HT01CN236 | Factory-matched for FV4ANF002000ABAA air handler
  • OEM vs Generic: OEM transformers are wound and encapsulated to exact VA and voltage specifications. Generic units often run under-rated VA, causing thermal trips or premature burnout when control loads spike — OEM is always the safer long-term choice.
  • Install difficulty: 2/5 — Shut off all power before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Always verify output voltage (should read 24–28V AC at secondary terminals) before reassembling the air handler cabinet. Check all low-voltage wiring for shorts before energizing the new transformer.
  • Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our warehouse.

Compatibility: Designed specifically for the Carrier FV4ANF002000ABAA fan coil / air handler unit. Cross-reference OEM part number HT01CN236 against your unit's data plate and wiring diagram to confirm fitment before ordering. Not sure? Our HVAC parts specialists verify compatibility before your order ships — contact us for fast assistance.

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 FV4ANF002000ABAA?
Yes. This is the factory-specified OEM transformer for the Carrier FV4ANF002000ABAA. 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 FV4ANF002000ABAA?
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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