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This genuine OEM Carrier transformer (part number HT01BC701) is the factory-specified replacement for the Carrier PY3GEAA60115AA packaged rooftop unit. This heavy-duty step-down transformer converts the unit's 460V primary supply voltage down to a 230V secondary output at a robust 1564VA rating, providing stable power to internal components that operate at lower voltages. When this transformer fails, the downstream circuits lose power entirely — the result is a completely unresponsive unit, loss of control circuit voltage, or tripped protection devices with no recovery.
Compatibility: Designed for the Carrier PY3GEAA60115AA packaged rooftop unit. Also confirmed compatible with select Carrier, Bryant, and Payne packaged units and RTUs specifying part number HT01BC701. Always verify your unit's data plate voltage and VA requirements before ordering. Our technical team is available to confirm fitment — contact us before you order if you have any questions.