OEM Carrier Control Transformer 208/240V to 24V 40VA for Model PY2PPB060115AA

This OEM Carrier control transformer (part #HT01BD209) is the factory-specified replacement for the Carrier PY2PPB060115AA packaged unit. The transformer steps down high-voltage line power (208/240V) to the 24V signal that powers your thermostat, control board, and all low-voltage control circuits. When this part fails, the entire control system goes dark — your thermostat loses power, no call for heat or cooling is recognized, and the system becomes completely unresponsive. It is often the first component to check when nothing works at all.

• Specs: 208/240V primary input | 24V secondary output | 40VA power rating | 50/60 Hz | OEM part number HT01BD209 | Factory-matched to Carrier PY2PPB060115AA
• OEM vs Generic: OEM transformers are wound to exact VA and voltage tolerances required by Carrier. Undersized or off-tolerance aftermarket units can cause nuisance tripping, board damage, or premature failure of control circuits.
• Install difficulty: 2/5 — Shut off all power to the unit before starting. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label all wires before disconnecting, and confirm primary and secondary terminal orientation before reconnecting.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed as a direct OEM replacement for Carrier model PY2PPB060115AA. Verify your unit's primary voltage (208V or 240V) on the data plate before ordering to confirm this is the correct transformer. Have questions about fitment? Our HVAC parts specialists verify compatibility before you order — contact us today.