Dishwasher Problems

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Dishwasher Doesn't Clean

Water Pump Belt

Although few dishwashers have a water pump belt, if the dishwasher won’t clean dishes there might be a worn or broken water pump belt. Remove the lower kick panel and the motor will be in the front, the water pump belt is on the bottom of the motor.

Water Inlet Valve

If the dishwasher won’t clean dishes, it might not be getting enough water. There is an electrical valve called a water inlet valve which opens to allow hot water into the dishwasher. If this valve has failed or is clogged the dishwasher won’t clean the dishes properly. The valve cannot be cleaned or repaired and should be replaced.

Center Wash Arm Assembly

If the dishwasher won’t clean dishes, check the center wash arm assembly. If the center wash arm isn’t getting water, all of the dishes in the upper rack will come out dirty. Check to be sure the center wash arm assembly is mating properly with the water supply nozzle in the back of the dishwasher. Also check to be sure the little holes in the center wash arm aren’t clogged or blocked.

Lower Wash Arm Assembly

If the dishwasher won’t clean dishes, check the lower wash arm assembly. If the lower wash arm isn’t getting water, all of the dishes in the lower rack will come out dirty. Check to be sure the lower wash arm assembly spins freely. Also check to be sure the little holes in the lower wash arm aren’t clogged or blocked.

Upper Wash Arm Assembly

If the dishwasher won’t clean dishes, check the upper wash arm assembly. If the upper wash arm isn’t getting water, all of the dishes in the upper rack will come out dirty. Check to be sure the upper wash arm assembly is intact. Also check to be sure the little holes in the upper wash arm aren’t clogged or blocked.

Circulation Pump

If the dishwasher won’t clean dishes the circulation pump might have failed. If there is no noise coming from the circulation pump after the dishwasher has filled, the pump itself might be burned out. Unfortunately, there isn’t any easy way to test the circulation pump. If other components have been tested and they check out OK, the circulation pump might need to be replaced. This job is somewhat difficult but many DIY’ers are successful replacing the circulation pump.

Pump and Motor Assembly

If the dishwasher won’t clean the dishes the pump and motor assembly might be defective. Once the dishwasher fills with water, the pump forces the water through the wash arms in order to spray the dishes. If the motor is defective, the pump impeller is broken, or some part of the pump is clogged, the dishes won’t be clean. If the pump and motor has power to it and will not run it will need to be replaced.

Wash Impeller

On some models there is a small, replaceable impeller on the pump motor. As the motor spins, the impeller forces the water up through the wash arms. If the impeller is missing some of its fins or is broken it may not be able to produce the necessary pressure. The impeller can be replaced independently of the motor and pump assembly on most models.

Circulation and Drain Pump Motor

If the dishwasher won’t clean dishes the circulation and drain pump motor might have failed. If the motor isn’t making any noise after the dishwasher has filled, the motor itself might be burned out. Unfortunately, there isn’t any easy way to test the motor. If other components have been tested and they check out OK, the circulation and drain pump motor might need to be replaced. This job is somewhat difficult but many DIY’ers are successful replacing the motor.

Upper Wash Arm Spinner

If the dishwasher won’t clean dishes, check the upper wash arm spinner. If the upper spinner isn’t getting water, all of the dishes in the upper rack will come out dirty. Check to be sure the upper spinner is intact. Also check to be sure the little holes in the spinner aren’t clogged or blocked.

Dishwasher Leaking

Water Inlet Valve

If the dishwasher is leaking water the water inlet valve might be defective. If the water inlet valve sticks open, it will allow water to fill the dishwasher continuously. Some customers report that they see clean water filling the bottom of the dishwasher after it’s been sitting all night or for a couple of days. If this happens, turn off the water that is supplying the dishwasher. This is normally a valve under the kitchen sink. Then, replace the water inlet valve, it cannot be repaired. The water valve needs at least 20 lbs pressure to shut off properly. If your water pressure is too low replacing the valve may not solve the problem.

Center Wash Arm Assembly

If the dishwasher is leaking water, the center wash arm assembly might be cracked or split. This can allow a jet of water to spray toward the door seal, causing a leak. If a crack or split in the center wash arm assembly is found, replace it. There isn’t any glue that will hold the part together inside the dishwasher.

Lower Wash Arm Assembly

If the dishwasher is leaking water the lower wash arm assembly might be defective. If the lower wash arm has a crack or split on the end, it can force water to spray directly toward the lower part of the dishwasher door. Then, the water can be forced under the door and onto the floor. Check the lower wash arm for any cracks or splits and replace it if necessary. Also make sure the screws are tight in the wash arm support. If the screws are loose, water can spray out the side of the pump and cause a leak.

Upper Wash Arm Assembly

If the upper wash arm assembly is broken or cracked it can cause water to spray very forcefully toward the seams of the door, causing a leak.

Door Seal

Every dishwasher door has a door seal. If the dishwasher is leaking water, it might be that the door seal is defective or worn out. Try closing the dishwasher door on a dollar bill and see if the door seal is making good contact all the way around the door. If not, replace the door seal. If the door seal is good or has been replaced and there is still a leak check the door hinges. If the hinges are bent the door will not close properly and the hinges will need to be replaced.

Hood Motor Hums

Exhaust Fan Motor

If the hood motor hums when it is turned on, the exhaust fan motor is defective and will need to be replaced. The most common cause for this is a shorted electrical winding inside the motor, or worn out motor shaft bearings. The motor is not repairable and will need to be replaced.

Fan Blade

If the range vent hood motor hums check to see if the fan blade turns freely. If not, see if the blade is rubbing against anything. Correct any rubbing and try again. If that doesn’t solve the problem the motor might be burned out. If the fan blade is damaged it will need to be replaced.

Hood Lights Not Working

Light Assembly

If the hood lights are not working, the light assembly might be defective. The parts in this assembly are not sold separately, only as a unit.

Light Bulb

If the hood lights are not working and a new light bulb doesn’t solve the problem check the on-off switch and make sure the bulb is all the way in the light socket.

Halogen Lamp

If the hood lights are not working one or more of the halogen lamp bulbs may be burned out. It’s very difficult to tell if a halogen lamp has burned out by looking at it. Test them for continuity with in Ohm meter, or just replace them with a known, good bulb.

Light Socket

The light socket is often sold as a one-piece replacement. If the range vent hood light is out and the bulb is good, the light socket may need to be replaced.

Top of Form.

Light Switch

If the hood lights are not working and a new light bulb doesn’t solve the problem check the on-off light switch.

Push Button Switch

If the hood lights are not working, the push button switch might be defective. Test the switch for continuity with an Ohm meter.

Switch Kit

If the hood lights are not working the switch kit might be defective. Watch our video on switch testing and test this switch for continuity.

Main Control Board

If the hood lights are not working check the bulbs and bulb sockets first, if those are good the problem might be with the main control board.

Selector Switch

If the hood lights are not working the selector switch might be defective. Watch our video on switch testing and test this switch for continuity.

Switch

If the hood lights are not working the switch might be defective. Watch our video on switch testing and test this switch for continuity.

Hood Motor is Loud or Noisy

Exhaust Fan Motor

If the hood motor is loud or noisy the exhaust fan motor bearings might be worn out. Try wiggling the motor shaft back an forth, there should be absolutely no movement. If there is even the slightest amount of wiggle in the shaft it will be very loud. There is no way to repair the motor bearings, the motor will have to be replaced. In addition, the bearings are permanently lubricated, no oiling is needed.

Hood Keypad Doesn't Work

Touchpad

If the hood keypad doesn’t work the touchpad may be defective. The problem can also be in the main control board.

User Control and Display Board

If the range vent hood keypad doesn’t work the user control and display board is probably defective.

Main Control Board

If the hood keypad doesn’t work the main control board is probably defective.

Hood Doesn't Vent to The Outside

Exhaust Fan Motor

If the hood is no longer venting to the outside the exhaust fan motor might have stopped working. Check to see if the fan blade is spinning when the vent hood is turned on. If not, check to see if you have power to the motor . If not check the switch if you do have power and the motor isn’t turning replace the exhaust fan motor.

Blower Wheel and Housing

If the hood doesn’t vent to the outside, there might be something caught in the blower wheel & housing, or the blower wheel might be rubbing against the blower housing Check to be sure the blower wheel turns freely. If not, correct any situation where it might be obstructed or rubbing. If it does turn freely, the problem may be a restriction in the venting or a stuck damper that is not opening all the way.

Charcoal Filter

If the range hood is not venting correctly check out the charcoal filter(s). If the filter is very dirty it should be replaced as there is no good way to clean them in most cases.

Grease Filter

If the range hood is not venting correctly check out the grease filter(s). If the filter is very dirty it can be cleaned. Remove it and soak it in a degreasing solution until the grease is dissolved. Next, wash it with warm, soapy water to remove any traces of the degreaser. If the filter does not come clean, replace it.

Air Flow Problem

If the range hood vents to the outside and is not exhausting air correctly look for a clogged or partially clogged vent system. Make sure the ducting is clean & clear including the outside vent damper.

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