OEM Carrier 40VA Control Transformer for Model FZ4ANP024L05AAAA — Part# HT01CN241

This OEM control transformer (part number HT01CN241) is the factory-specified replacement for the Carrier FZ4ANP024L05AAAA air handler. The transformer steps down line voltage (120V) to the 24V AC signal that powers your thermostat, control board, and all low-voltage safety circuits. When the transformer fails, the entire control circuit goes dark — your thermostat goes blank, the system stops responding to calls for heating or cooling, and no fan or blower operation occurs. A failed transformer is often misdiagnosed as a bad control board, so always verify transformer output voltage before replacing costlier components.

• Specs: 40VA rated | 120V primary → 24V secondary | Factory OEM part number HT01CN241 | Exact-fit mounting and lead configuration for FZ4ANP024L05AAAA
• OEM vs Generic: This is the genuine Carrier OEM transformer, wound to exact VA and voltage tolerances. Generic transformers may run under-rated VA, causing premature thermal cutout trips and intermittent control failures under full system load.
• Install difficulty: 2/5 — Shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Confirm 24V output at secondary leads before reassembling the air handler cabinet.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Orders ship same business day from our climate-controlled warehouse.

Compatibility: Engineered for the Carrier FZ4ANP024L05AAAA fan coil/air handler unit. Always verify your existing transformer's VA rating and primary/secondary voltages on the unit data plate before ordering to ensure a correct fitment. Our HVAC parts specialists are available to confirm compatibility prior to purchase — just reach out before you order. In stock and ready to ship today.