OEM Carrier 40VA Control Transformer HT01CN241 for Model PF4MNA048L00AAAA

This OEM control transformer is the factory-specified replacement for the Carrier PF4MNA048L00AAAA air handler. The transformer steps down 208/230V line voltage to the 24V DC signal that powers your thermostat, control board, and all low-voltage safety circuits. When this part fails, the entire control circuit goes dead — your thermostat goes blank, the system won't respond to any call for heating or cooling, and no fault codes will display because the board itself has no power.

• Specs: 208/230V Primary | 24V Secondary | 40VA rated | Direct OEM replacement for part number HT01CN241
• OEM vs Generic: This is a genuine Carrier OEM transformer wound to exact factory VA and voltage tolerances. Generic transformers frequently run under-rated VA, causing the secondary to sag under load and triggering nuisance lockouts or premature control board failure.
• Install difficulty: 2/5 — Always disconnect power at the breaker before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter to verify 24V output after installation. Photograph all low-voltage wiring before disconnecting terminals.
• Warranty: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse when ordered by cutoff time.

Compatibility: Designed for the Carrier PF4MNA048L00AAAA air handler. Always verify your unit's data plate voltage rating matches the 208/230V primary specification before ordering. Not sure it fits? Our HVAC parts team verifies fitment before you buy — contact us before placing your order.