OEM Carrier Control Transformer 40VA 208/240V to 24V for Model PY2PNB060090AA

This is the genuine OEM control transformer (part #HT01BD209) factory-specified for the Carrier PY2PNB060090AA packaged heating and cooling unit. The transformer steps down 208/240V line voltage to the 24V AC signal that powers your thermostat, control board, gas valve solenoid, and all low-voltage safety circuits. When this part fails, the entire low-voltage control circuit goes dark — resulting in a completely unresponsive thermostat, no heating or cooling calls being processed, or nuisance tripping of the control fuse. If your system is "dead" despite line voltage being present at the unit, this transformer is one of the first components to test.

• Specs: 40VA rating | 208/240V primary input | 24V secondary output | 50/60 Hz | OEM part #HT01BD209 | Replaces HT01BD207, HT01CN232, 9076-00
• OEM vs Generic: This factory Carrier transformer is wound to precise VA and voltage tolerances. Undersized or off-tolerance generic transformers can overheat, blow the low-voltage fuse repeatedly, or fail to sustain 24V under full control-circuit load — causing intermittent lockouts that are difficult to diagnose.
• Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label or photograph all wire connections before disconnecting the old unit. Verify incoming voltage matches the transformer's primary tap before energizing.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse.

Compatibility: Direct factory replacement for Carrier model PY2PNB060090AA. Also replaces legacy Carrier part numbers HT01BD207, HT01CN232, and 9076-00. Verify your unit's line voltage (208V or 240V) matches the primary input before ordering. Have your model and serial number ready — our team confirms fitment before you buy. Order now and ships today.