OEM Carrier 40VA Control Transformer HT01CN241 for Model FZ4ANP036L00AAAA

This OEM control transformer (part number HT01CN241) is the factory-specified replacement for the Carrier FZ4ANP036L00AAAA air handler unit. The transformer steps down line voltage from 120V to 24V AC to power the low-voltage control circuit — including the thermostat, contactor coils, and control board. When this component fails, the entire control circuit loses power and nothing works: the thermostat goes dark, the system will not respond to any calls for heating or cooling, and you may blow the low-voltage fuse repeatedly if a shorted secondary is the cause.

• Specs: 40VA rating | Primary: 120V AC | Secondary: 24V AC | Factory-matched OEM tolerances | Replaces Carrier OEM part number HT01CN241
• OEM vs Generic: This OEM transformer is wound to exact factory specifications, ensuring stable 24V output under full control load. Generic alternatives can drift under load, causing intermittent lockouts, nuisance tripping, and premature control board failure.
• Install Difficulty: 2/5 — Disconnect power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Label all wiring connections before removing the old transformer. Typical replacement time is 20–30 minutes.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. In-stock units ship same business day from our warehouse.

Compatibility: Designed specifically for the Carrier FZ4ANP036L00AAAA air handler. Always verify your existing transformer's VA rating and primary/secondary voltages on the unit data plate or wiring diagram before ordering. If you need fitment confirmation, our HVAC parts specialists are available to verify compatibility before you purchase — ensuring a correct first-time repair.