OEM Carrier Control Transformer 40VA 208/240V to 24V — HT01BD209 for Model PY2PPB042060AB

This is the factory-specified OEM control transformer for the Carrier PY2PPB042060AB packaged heating and cooling unit. The transformer steps down 208/240V line voltage to the 24V signal used by the thermostat, control board, gas valve, and all low-voltage components. When this transformer fails — due to a wiring short, overload, or age — the entire control circuit goes dead: the thermostat goes blank, the system refuses to start, and no call for heat or cooling is answered. Replacing it with the correct OEM part restores full system operation immediately.

• Specs: 208/240V Primary | 24V Secondary | 40VA Rating | 50/60Hz | OEM Part # HT01BD209 | Also replaces HT01BD207, HT01CN232, 9076-00
• OEM vs Generic: OEM transformers are wound to exact factory VA and voltage tolerances, protecting downstream components like control boards and gas valves. Generic units with loose tolerances can deliver unstable 24V output, causing nuisance lockouts or premature board failure.
• Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or terminals. Label all low-voltage wires before disconnecting. Verify 24V output across secondary terminals after installation before restoring full power.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse.

Compatibility: Fits Carrier model PY2PPB042060AB packaged units. Also cross-references to Bryant and Payne units using part numbers HT01BD207, HT01CN232, and 9076-00. Confirm your unit's voltage requirements on the data plate before ordering. Have fitment questions? Our HVAC parts specialists verify compatibility before you buy — contact us today and get your unit back online fast.