OEM Carrier 40VA Control Transformer HT01BD236 for Model C50A202752

This is the factory OEM replacement control transformer (part number HT01BD236) for the Carrier C50A202752 commercial packaged unit. The transformer steps down line voltage from 120V to 24V to power the low-voltage control circuit — including the thermostat, contactor coil, and all safety controls. When this transformer fails, the entire control circuit goes dead: the thermostat shows no response, the system won't energize, and no components will start. A blown transformer is often caused by a shorted control wire or a failed downstream component drawing excess current, so always inspect the control wiring before installing a replacement.

• Specs: 40VA rating | 120V primary / 24V secondary | Direct OEM replacement | Part number HT01BD236 | Factory-matched output tolerance for reliable control circuit operation
• OEM vs Generic: This factory OEM unit is wound and rated to exact Carrier specifications. Generic transformers often use undersized cores and thinner windings that run hot, reducing lifespan and risking repeated failures under normal load.
• Install Difficulty: 2/5 — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (verify 24V output after install). Photograph all wire connections before removal. Check for shorted low-voltage wiring that may have caused the original failure.
• Warranty: 1-year OEM factory warranty against defects. Orders placed by 3PM local time ship same business day from our stocked warehouse.

Compatibility: Designed for the Carrier C50A202752 commercial rooftop/packaged unit. Verify primary voltage (120V) and VA rating on your unit's data plate before ordering. Our fitment team is available to confirm compatibility before you buy — same-day shipping means your system is back online fast.