OEM Carrier Control Transformer 40VA 208/240V — HT01BD209 for Model PY2PNB060115AB

This OEM Carrier control transformer (part #HT01BD209) is the factory-specified replacement for the Carrier PY2PNB060115AB packaged gas/electric unit. The transformer steps down high-voltage line power to the 24V signal that energizes your thermostat, control board, relays, and safety circuits. When it fails, the entire low-voltage control circuit goes dark — you'll see a completely unresponsive thermostat, a system that won't call for heat or cooling, or tripped low-voltage fuses with no obvious cause.

• Specs: Primary input 208/240V | Secondary output 24V | 40VA power rating | 50/60Hz | Factory OEM part #HT01BD209 — direct drop-in replacement, no wiring modifications required
• OEM vs Generic: OEM transformers are wound and insulated to exact Carrier factory specifications, ensuring stable 24V output under full load. Generic transformers often run warm, output unstable voltages, and fail prematurely — risking damage to your control board and downstream components.
• Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Label or photograph all low-voltage wiring before disconnecting terminals.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered as a factory-matched replacement for Carrier model PY2PNB060115AB. Always verify input voltage on your unit's data plate matches 208/240V before ordering. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — order with confidence.