OEM Carrier Control Transformer 40VA 208/240V to 24V for Model PY2PPB042060AA

This OEM control transformer is the factory-specified replacement part for the Carrier PY2PPB042060AA packaged unit. The transformer steps down line voltage (208/240V) to the 24V AC signal that powers your thermostat, control board, contactors, and all low-voltage safety circuits. When it fails, the entire control circuit goes dark — nothing works, no signals are sent, and the system won't respond to thermostat commands. A failed transformer is one of the most common causes of a completely unresponsive HVAC system.

• Specs: 40VA capacity | 208/240V primary input | 24V secondary output | 50/60Hz | OEM part number HT01BD209 | Replaces HT01BD207, HT01CN232, 9076-00
• OEM vs Generic: OEM transformers are wound and insulated to exact factory tolerances, ensuring stable 24V output under full control-circuit load. Generic units may sag under load or fail prematurely, causing intermittent lockouts and nuisance callbacks.
• Install difficulty: 2/5 — Turn off all power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire stripper. Label all wires before disconnecting. Verify primary voltage at the unit data plate before ordering — 208V and 240V variants use the same transformer on this unit.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse.

Compatibility: Engineered as a direct OEM replacement for Carrier model PY2PPB042060AA packaged units. Cross-references include HT01BD207, HT01CN232, and 9076-00. Verify model and serial number on your unit's data plate before ordering. Our team is available to confirm fitment before you buy.