OEM Carrier Control Transformer 40VA 208/230V to 24V for Model PY3GNA060130NB

This OEM Carrier control transformer (part #HT01BD209) is the factory-specified replacement for the Carrier PY3GNA060130NB packaged unit. The transformer steps down 208/230V line voltage to the 24V signal required to power the low-voltage control circuit — including the thermostat, control board, contactor coil, and safety switches. When this transformer fails, the entire control circuit goes dead: the thermostat loses power, the system won't respond to any call for heating or cooling, and in some cases the circuit breaker or fuse on the secondary side will blow repeatedly.

• Specs: 208/230V primary | 24V secondary | 40VA rated | 50/60 Hz | Replaces HT01BD207, HT01CN232, 9076-00
• OEM vs Generic: OEM transformers are wound to exact factory VA ratings and insulation class, preventing voltage sag under full control-circuit load. Generic units may be under-rated, causing nuisance brownouts at the control board and premature transformer failure.
• Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter (verify 0V before touching secondary leads). Label or photograph all wiring before disconnecting. Secondary fuse (typically 3A) should be inspected and replaced if blown.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY3GNA060130NB packaged gas/electric unit. Verify your unit's control voltage (24V) and transformer VA requirement on the data plate or wiring diagram before ordering. Cross-references HT01BD207, HT01CN232, and 9076-00. Questions about fitment? Our HVAC parts team verifies compatibility before you order — order with confidence and get back up and running today.