Name: Contactor
Brand: Trane
SKU: i4997247
Price: 38.04 USD
Availability: InStock

Dryer blower wheel. Used on 29 inch Whirlpool built models with lint filter on top. To remove the blower wheel, unscrew the blower wheel  clockwise off the motor shaft.

Blower Wheel

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Central Air Condensing Unit Contactor - How it Works & Installation Tips

This free how-to video explains how central air condensing unit contactors work. The video also offers tips and tricks to aid you in the installation of your contactor. If you're unable to find the information you need on our website, we suggest that you use a search online to find a reliable online repair forum. It's likely that your question has already been answered there. We also recommend contacting your product's manufacturer or calling a local repair technician. And don't forget to like and comment on this video, and subscribe to our channel!

2TWR3048A1000AA

Central air conditioner not cooling properly

The furnace control board sends a low voltage signal to the contactor. When the contactor receives the signal from the control board, it closes the circuit, sending voltage to the condensing unit components. If the contactor is defective, it will not provide voltage to the condensing unit. To determine if the contactor is at fault, use a multimeter to test the contactor for continuity. If the contactor does not have continuity, replace it.  

Central air conditioner is noisy or loud

The furnace control board sends a low voltage signal to the contactor. When the contactor receives the signal from the control board, it closes the circuit, sending voltage to the condensing unit components. If the contactor is defective, it will not provide voltage to the condensing unit. In addition, the contactor will make noise when it is defective. If the condensing unit is making noise but not cooling, the contactor has probably failed. To determine if the contactor is at fault, use a multimeter to test the contactor for continuity. If the contactor does not have continuity, replace it.

Central Air Conditioner Condensing unit does not run

The furnace control board sends 24 Volts to the contactor. When the contactor receives the signal from the control board, it closes the circuit, sending voltage to the condensing unit components. If the contactor is defective, it will not provide voltage to the condensing unit. To determine if the contactor is at fault, use a multimeter to check for 24 Volts at the low voltage side of the contactor. If 24 Volts is present but the compressor and condenser fan motor still won’t run, replace the contactor.

Central air conditioner won't turn off

The furnace control board sends a low voltage signal to the contactor. When the contactor receives the signal from the control board, it closes the circuit, sending voltage to the condensing unit components. If the contactor has shorted, it can send continuous voltage to the condensing unit's components resulting in the central air system not turning off. To determine if the contactor is at fault, use a multimeter to test the contactor for a short. If the contactor has shorted, replace it.

Central air conditioner compressor won't run

The furnace control board sends a low voltage signal to the contactor. When the contactor receives the signal from the control board, it closes the circuit, sending voltage to the condensing unit components. If the contactor is defective, it can prevent the compressor from running. To determine if the contactor is at fault, use a multimeter to test the contactor coil for continuity. If the contactor coil does not have continuity or the contacts a on the coil look burnt, replace it.

Air handler not heating

The furnace or air handler control board sends a low voltage signal to the contactor. When the contactor receives the signal from the control board, it closes the circuit, sending voltage to the other heating circuit components. If the contactor is defective, the heating circuit will not receive the voltage needed to operate. To determine if the contactor is at fault, use a multimeter to test the contactor for continuity. If the contactor does not have continuity, replace it.

Heat pump not cooling

The air handler control board sends a low voltage signal to the contactor. When the contactor receives the signal from the control board, it closes the circuit, sending voltage to the outside unit components. If the contactor is defective, it will not provide voltage to the outside unit. To determine if the contactor is at fault, use a multimeter to test the contactor for continuity. If the contactor does not have continuity, replace it.

Heat pump not heating

Heat pump is noisy or loud

The furnace or air handler control board sends a low voltage signal to the contactor. When the contactor receives the signal from the control board, it closes the circuit, sending voltage to the outside unit components. If the contactor is wearing out, it may start buzzing or making loud vibrating noises. If the contactor is noisy when its energized, the component should be replaced.

Heat pump won't turn on

The furnace or air handler control board sends a low voltage signal to the contactor. When the contactor receives the signal from the control board, it closes the circuit, sending voltage to the outside unit components. If the contactor is defective, it will not provide voltage to the outside unit. To determine if the contactor is at fault, use a multimeter to test the contactor for continuity. If the contactor does not have continuity, replace it.

Heat pump compressor won't run

The control board sends a low voltage signal to the contactor. When the contactor receives the signal from the control board, it closes the circuit, sending voltage to the outside unit components. If the contactor is defective, it can prevent the compressor from running. To determine if the contactor is at fault, use a multimeter to test the contactor coil for continuity. If the contactor coil does not have continuity or the contacts a on the coil look burnt, replace it.

Heat pump won't turn off

The control board sends a low voltage signal to the contactor. When the contactor receives the signal from the control board, it closes the circuit, sending voltage to the outside unit components. If the contactor has shorted, it can send continuous voltage to the outside unit's components resulting in the system not turning off. To determine if the contactor is at fault, use a multimeter to test the contactor for a short. If the contactor has shorted, replace it.

Air handler not cooling properly

The air handler control board sends a low voltage signal to the contactor. When the contactor receives the signal from the control board, it closes the circuit, sending voltage to the condensing unit components. If the contactor is defective, it will not provide voltage to the condensing unit. To determine if the contactor is at fault, use a multimeter to test it for continuity. If the contactor does not have continuity, replace it.


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Central air conditioner not cooling? This video provides information on how to troubleshoot a central air conditioner and the most likely defective parts associated with this problem. Commonly replaced central air parts: Capacitor Compressor Fan Blade Fan Motor Contactor Fuse The information provided in this air conditioner troubleshooting video is applicable to all brands: Air Bear Trion, Amana, Arcoaire, Broan, Bryant, Carrier, Coleman, Comfortmaker, DuroGuard, Fasco, Frigidaire, Garrison, Gibson, Goodman, Grandaire, Heil, Honeywell, ICM, ICP, Intertherm, Kelvinator, Kenmore, Lennox, Luxaire, Mammoth, Mars, Maytag, Medallion, Miller, Nordyne, Nutone, Payne, Philco, Rheem, Ruud, Tappan, Tempstar, Thermal Zone, Trane, WeatherKing, Westinghouse, White Rogers, York

Central Air Conditioner Not Cooling — Central Air Conditioner Troubleshooting

Central air conditioner fan motor not running? This video provides information on how to troubleshoot a central air conditioner and the most likely defective parts associated with this problem. Commonly replaced central air parts: Capacitor Compressor Fan Blade Fan Motor Contactor Fuse The information provided in this air conditioner troubleshooting video is applicable to all brands: Air Bear Trion, Amana, Arcoaire, Broan, Bryant, Carrier, Coleman, Comfortmaker, DuroGuard, Fasco, Frigidaire, Garrison, Gibson, Goodman, Grandaire, Heil, Honeywell, ICM, ICP, Intertherm, Kelvinator, Kenmore, Lennox, Luxaire, Mammoth, Mars, Maytag, Medallion, Miller, Nordyne, Nutone, Payne, Philco, Rheem, Ruud, Tappan, Tempstar, Thermal Zone, Trane, WeatherKing, Westinghouse, White Rogers, York

Central Air Conditioner Fan Motor Not Running — Central Air Conditioner Troubleshooting

Central air conditioner noisy? This video provides information on how to troubleshoot a central air conditioner and the most likely defective parts associated with this problem. Commonly replaced central air parts: Capacitor Compressor Fan Blade Fan Motor Contactor Fuse The information provided in this air conditioner troubleshooting video is applicable to all brands: Air Bear Trion, Amana, Arcoaire, Broan, Bryant, Carrier, Coleman, Comfortmaker, DuroGuard, Fasco, Frigidaire, Garrison, Gibson, Goodman, Grandaire, Heil, Honeywell, ICM, ICP, Intertherm, Kelvinator, Kenmore, Lennox, Luxaire, Mammoth, Mars, Maytag, Medallion, Miller, Nordyne, Nutone, Payne, Philco, Rheem, Ruud, Tappan, Tempstar, Thermal Zone, Trane, WeatherKing, Westinghouse, White Rogers, York

Central Air Conditioner Is Noisy — Central Air Conditioner Troubleshooting

Central air conditioner not running? This video provides information on how to troubleshoot a central air conditioner and the most likely defective parts associated with this problem. Commonly replaced central air parts: Capacitor Compressor Fan Blade Fan Motor Contactor Fuse The information provided in this air conditioner troubleshooting video is applicable to all brands: Air Bear Trion, Amana, Arcoaire, Broan, Bryant, Carrier, Coleman, Comfortmaker, DuroGuard, Fasco, Frigidaire, Garrison, Gibson, Goodman, Grandaire, Heil, Honeywell, ICM, ICP, Intertherm, Kelvinator, Kenmore, Lennox, Luxaire, Mammoth, Mars, Maytag, Medallion, Miller, Nordyne, Nutone, Payne, Philco, Rheem, Ruud, Tappan, Tempstar, Thermal Zone, Trane, WeatherKing, Westinghouse, White Rogers, York

Central Air Conditioner Not Running — Central Air Conditioner Troubleshooting

This free troubleshooting video shows quick maintenance tips for taking care of your Gree PTAC Unit. If you're unable to find the information you need on our website, we suggest that you use a search online to find a reliable online repair forum. It's likely that your question has already been answered there. We also recommend contacting your product's manufacturer or calling a local repair technician. And don't forget to like and comment on this video, and subscribe to our channel!

PTAC Unit Maintenance Tips