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This genuine OEM Carrier transformer (part number HT01BC701) is the factory-specified power transformer for the Carrier PH4GEXA36000AA packaged heat pump unit. Unlike a standard 40VA control transformer, this is a high-capacity 1,564VA step-down transformer that converts 460V primary power to 230V secondary for powering critical internal loads within the unit. When it fails, the result is immediate and unmistakable: complete loss of power to downstream components, a dead thermostat, or the system failing to respond to any command. Buzzing, burning smells, or tripped breakers are also common indicators of transformer failure.
Compatibility: Designed as the direct OEM replacement for Carrier model PH4GEXA36000AA packaged heat pump units. Verify your unit's primary voltage (460V) and VA requirement against your data plate before ordering. Cross-references include RC6800182 and BE33426001. Our technical team is available to confirm fitment before you order — call or chat today.