OEM Carrier Control Transformer 40VA 230V/115V for Model 09DE084C600

This OEM Carrier control transformer (part number HT01BC208) is the factory-specified replacement for the Carrier 09DE084C600. The transformer steps down the incoming line voltage to power the 24V control circuit that governs the thermostat, contactor coil, and all low-voltage safety controls. When this transformer fails, the entire control circuit goes dead — no thermostat response, no fan, no cooling or heating — making it one of the first components to check when a unit shows zero activity despite having power at the disconnect.

• Specs: 40VA capacity | 230V primary / 115V secondary | 50/60 Hz | Totaline OEM factory part | Cross-references: 320659-301, 2-05757-1
• OEM vs Generic: This OEM Totaline/Carrier transformer is wound to exact factory VA and voltage tolerances. Generic or undersized transformers can sag under load, cause nuisance control board faults, or fail prematurely when multiple accessories share the secondary circuit.
• Install difficulty: 2/5 — Turn off power at the disconnect and confirm zero voltage with a meter before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label all low-voltage wires before disconnecting. A blown transformer often signals a downstream short — inspect wiring and control boards before energizing the replacement.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Fits Carrier model 09DE084C600. Verify primary voltage (230V) and VA rating (40VA) against your unit's data plate before ordering. This part also cross-references Carrier/Bryant/Payne systems using part numbers 320659-301 or 2-05757-1. Our fitment team is available to confirm compatibility before you order.