Power systems with this genuine OEM transformer, part number T111603028, compatible with select Carrier Packaged Unit/RTU, Heat Pump, or Central Air Conditioner.
Grid is 1 inch square
Carrier Transformer T111603028
Manufacturer Part

Carrier Transformer T111603028

Genuine OEM Part # T111603028RC Item # 3526924
Manufacturer Part
Power systems with this genuine OEM transformer, part number T111603028, compatible with select Carrier Packaged Unit/RTU, Heat Pump, or Central Air Conditioner.
Grid is 1 inch square
Carrier Transformer T111603028
$62.80
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Power systems with this genuine OEM transformer, part number T111603028, compatible with select Carrier Packaged Unit/RTU, Heat Pump, or Central Air Conditioner.
Loading stock status
$62.80
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This part T111603028 is compatible with:

Product Type:
Central Air Conditioner
Brands:
Carrier

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Maintenance
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Transformer Customer Reviews

Common Problems Fixed by the Transformer

Based on customer reports and repair data, this part commonly fixes these issues:

Very Likely

Central air conditioner won't turn on

Possible

Heat pump not cooling

Possible

Heat pump not heating

Possible

Heat pump won't turn on

Possible

Central air conditioner wall thermostat not working properly

Possible

Heat pump wall thermostat not working properly

Possible

Central air conditioner not cooling properly

About the Transformer

The furnace control board sends a low voltage signal of 24 volts to the thermostat. When the themostat cooling contacts close, a 24 volt signal is sent to the contactor coil, closing the high voltage circuit and sending power to the condensing unit components. Some furnaces have a separate transformer for the 24 volt circuit, so if the contactor is not receiving the proper voltage when the thermostat cooling contacts are closed, it's likely this transformer has failed and the component will need to be replaced.

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