OEM Carrier 40VA Control Transformer for Model C50A202562

This is the factory-specified OEM replacement control transformer for the Carrier C50A202562 commercial packaged unit. The transformer steps down 120V line voltage to the 24V signal used by your thermostat, contactor coils, and control board. When it fails, the low-voltage control circuit goes completely dead — the thermostat goes blank, the system stops responding to calls for heating or cooling, and no components energize. A failed transformer is often misdiagnosed as a bad thermostat or control board, making correct identification critical before replacing costlier parts.

• Specs: 40VA rating | 120V primary / 24V secondary | Class 2 control transformer | OEM part numbers HT01BD236 and HT01BD702 — both are factory-approved replacements for this model
• OEM vs Generic: OEM transformers are wound to exact VA and impedance specifications for the Carrier C50A202562 control circuit. Undersized or off-spec generic units can overheat, trip internal thermal cutoffs, or fail to sustain voltage under full control-circuit load, leading to nuisance lockouts.
• Install difficulty: 2/5 — Disconnect power at the disconnect and breaker before servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Verify 0V at primary terminals before touching wiring. Photograph all wire connections prior to removal and match lead colors carefully on reinstallation.
• Warranty: 1-year OEM factory warranty. In-stock units ship same business day from our warehouse when ordered before cutoff.

Compatibility: Engineered for the Carrier C50A202562 commercial rooftop/packaged unit. Cross-references OEM part numbers HT01BD236 and HT01BD702. Always confirm your unit's control circuit voltage requirements on the data plate before ordering. Our HVAC parts specialists are available to verify fitment — reach out before you order if you have any questions.