When your Whirlpool, KitchenAid, or Maytag trash compactor stops working, the issue often comes from a worn-out on-off rotary switch. The repair process is simpler than most people expect, and with the right steps, you can have your appliance working again in no time.
About the On-Off Rotary Switch
The on-off rotary switch in your Whirlpool, KitchenAid, or Maytag trash compactor controls the flow of power to the unit. Without it, the compactor cannot turn on or off correctly. Over time and repeated use, the switch may wear down or malfunction, preventing the compactor from operating as it should.
Replacing this switch is a straightforward task that can usually be completed quickly with a few basic tools.
Common Signs of a Faulty Rotary Switch
Before replacing the part, it helps to confirm that the rotary switch is the actual cause of the problem. Look for these signs:
- The compactor does not start even when the knob is turned.
- The unit runs only intermittently or stops mid-cycle.
- You hear clicking or crackling sounds from the switch area.
- The knob feels loose or spins without activating the compactor.
- Visible discoloration or burning marks appear around the control panel.
- A faint burning smell occurs when you attempt to use the appliance.
- The compactor light does not come on, even though the power outlet works.
These symptoms usually indicate that the switch contacts inside the rotary control have worn out or shorted, cutting power to the motor.
What You’ll Need
- Phillips screwdriver
- Needle-nose pliers
- Flathead screwdriver
- New on-off rotary switch kit (Part #675382)
Safety Precautions
Before performing any repair, take proper safety steps to protect yourself and your appliance. Keep the following guidelines in mind:
- Disconnect power: Always unplug the appliance or switch off the circuit breaker before beginning any work. This prevents the risk of electric shock.
- Let it cool: If the compactor was recently used, give it time to cool before handling any parts.
- Work carefully: Move slowly and deliberately to avoid mistakes or injuries.
- Good lighting: Work in a bright area so you can see all parts and wiring clearly.
- Organize your space: Keep your work area free of clutter, and keep children and pets away.
- Stay dry: Avoid working with wet hands or near moisture.
- Check the manual: Review your appliance’s user guide for model-specific safety notes or instructions.
- Handle gently: Apply only light pressure when removing or replacing parts to avoid damage.
- Protect your hands: Wear insulated work gloves to prevent cuts or scrapes from metal edges.
- Be cautious with wires: Do not touch exposed wires directly. Use insulated tools when necessary.
- Label connections: Take photos or notes before disconnecting any wires to simplify reassembly later.
How to Replace the On-Off Rotary Switch on a Trash Compactor
Follow these steps to replace the rotary switch and get your Whirlpool, KitchenAid, or Maytag trash compactor working properly again.
Disconnect Power
- Unplug the trash compactor from the power outlet.
Remove the Container
- Push the pedal down and pull out the container from the trash compactor.
- Lift the container and disengage the rear rollers so you can move it away.
Remove the Control Panel
- Pull off the switch knob.
- Use a Phillips screwdriver to remove the two Phillips screws that hold the control panel in place.
- Pull the control panel up and take it off.
Remove the Old Switch
- Use needle-nose pliers to unscrew the locking nut from inside the switch bracket by turning it counterclockwise.
- Remove the switch and the bracket.
- Use a flathead screwdriver to remove the wires from the rotary switch.
Install the New Switch
- Connect the wires to the new rotary switch.
- Put the mounting bracket on.
- Insert the new on-off rotary switch into the opening and install the lock nut.
- Turn the lock nut clockwise manually, then tighten it with the needle-nose pliers.
Reassemble the Control Panel
- Install the control panel.
- Put the two tabs on the panel into the cutouts and insert the two little plastic posts into the corresponding cutouts.
- Push the panel down to lock it in place.
- Secure the control panel with the two Phillips screws, one on each side.
- Install the new knob from the kit onto the switch.
Reinstall the Container and Test
- Install the container back on the rails and close it.
- Plug the trash compactor back in.
- Test the compactor to check for any problems.
Maintenance Tips to Extend Your Trash Compactor’s Life
Once your compactor is working again, regular care will help prevent future breakdowns. Use these tips to maintain performance:
- Empty the bin before it becomes too full to prevent strain on the ram.
- Wipe the interior and exterior surfaces with mild detergent after each use.
- Lubricate moving parts periodically according to your owner’s manual.
- Keep liquids and sharp objects out of the compactor to avoid internal damage.
- Inspect power cords and switches every few months for signs of wear.
- Clean around the foot pedal and control area to prevent debris buildup.
- Avoid overloading the unit, which can overheat the motor and reduce lifespan.
- Replace bags and liners regularly to maintain hygiene and odor control.
- Schedule a professional check-up every few years for optimal performance.
A little routine attention can help your appliance operate smoothly for many years.
What to Remember
A working trash compactor makes kitchen cleanup much easier, and fixing the on-off switch is a quick way to bring it back to life. Once you’ve replaced the faulty part, your Whirlpool, KitchenAid, or Maytag unit should run just like new. Taking a few minutes to clean it regularly and check for wear will help you avoid future issues and keep it running smoothly. With a bit of care and attention, your compactor will stay reliable and ready for daily use.