OEM Carrier 40VA Control Transformer (P201-2201) for Model P110LBP2317A

This is the OEM factory-replacement control transformer for the Carrier P110LBP2317A packaged or split-system unit. The transformer steps down line voltage (120V) to the 24V signal voltage that powers your thermostat, contactor coil, gas valve, and control board. When it fails, the entire control circuit goes dead — the thermostat goes blank, the system won't respond to any call for heating or cooling, and nothing works. Replacing the transformer with the correct OEM part (P201-2201) restores full control circuit operation immediately.

• Specs: 40VA rating | 120V primary / 24V secondary | OEM part number P201-2201 | Factory-matched output voltage tolerance for stable control circuit performance
• OEM vs Generic: OEM transformers are wound to exact VA and voltage specifications for your Carrier unit. Undersized or off-spec generic transformers can overload under peak demand, blow the transformer fuse, or cause erratic thermostat behavior and nuisance lockouts.
• Install difficulty: 2/5 — Disconnect all power before beginning. Tools needed: flathead and Phillips screwdrivers, wire nuts or spade connectors, multimeter to verify 24V output after install. Photograph existing wiring before disconnecting. Always check for a blown 3A fuse on the control board as a companion fault.
• Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our stocked warehouse.

Compatibility: Designed for the Carrier P110LBP2317A. Verify your existing transformer's VA rating and primary/secondary voltages on the unit data plate before ordering. If your system has a 40VA transformer and shows no 24V output at the secondary leads, this is your part. Our fitment team is available to confirm compatibility before you buy — same-day shipping guaranteed on in-stock orders.