OEM Carrier 50VA Control Transformer (P201-35150) for Model UPFLOW080FAUS12A

This OEM step-down transformer is the factory-specified replacement for the Carrier UPFLOW080FAUS12A upflow gas furnace. The transformer converts incoming line voltage (120/208/240 VAC) down to a safe 12/24 VAC used to power the system's control board, thermostat circuit, and all low-voltage control components. When this transformer fails, the result is typically a completely unresponsive furnace — no thermostat communication, no ignition sequence, and no blower activity. If your system is totally dead despite confirmed line power, a failed transformer is one of the first components to test.

• Specs: 50VA rated | Primary voltage: 120/208/240 VAC | Secondary voltage: 12/24 VAC | Single phase | 60 Hz | CSA listed | OEM part number: P201-35150
• OEM vs Generic: This is a genuine OEM Carrier/Totaline unit built to exact factory VA and voltage tolerances. Generic transformers often run under-rated VA capacity, leading to overheating and premature failure — especially in multi-stage furnace control circuits.
• Install difficulty: 2/5 — Shut off all power to the unit before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Photograph all low-voltage wiring connections before disconnecting. Match primary tap to your supply voltage. Typical job time: 30–45 minutes.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier UPFLOW080FAUS12A upflow gas furnace. Always verify your supply voltage (120V or 208/240V) to confirm the correct primary tap before installation. Compatible with standard 24V thermostat and control board wiring. Questions about fitment? Our HVAC parts specialists verify compatibility before you order — contact us anytime.