How to test a dishwasher's circulation pump with a multimeter
Content
Are you having problems using your dishwasher? Is the dishwasher making an abnormal noise? Is the motor overheating? These are some of the problems that are associated with a faulty dishwasher circulation pump.
If your dishwasher has stopped working properly, the circulation pump is often the problem. The dishwasher circulation pump is an important part of the dishwasher. Without it, your device will not properly wash dishes.
Of course, the reason your dishwasher isn't working properly could be related to another issue. You may be using too much detergent. It can also be due to, among other things, low water temperatures, problems with water pressure, or a faulty inlet valve.
It would be frustrating to replace the dishwasher's circulation pump only to find out that the problem is with another component of the appliance. That's why it's a good idea to check the circulation pump to see if it's faulty.
Here is a guide to help you test your dishwasher's circulation pump with a multimeter.
Quick response:
Unplug your dishwasher before you begin the process of testing your dishwasher's circulation pump with a multimeter. Next, disassemble the device with a screwdriver, and then test the dishwasher's circulation pump to diagnose the problem. To complete the task, you will need a screwdriver, a pair of pliers, and a multimeter.
Step 1: Unplug your dishwasher
First of all, turn off the dishwasher. Then pull it out and leave it on its side. Make sure your work area is clear and has enough space. This will give you enough storage space for the components you will be taking apart.
Tools You'll Need
To disassemble the dishwasher circulation pump motor, you need to have the appropriate tools ready. Here are the tools you'll need to get the job done:
- Screwdriver
- multimeter
- Pair of pliers
Step 2: Find out device
Lay the dishwasher on its side. Remove the dishwasher base using a screwdriver. Make sure you remove the mounting screws before pulling out the base plate. Then disconnect the flood protection switch connectors from the other connectors around the pump. (1)
Set the connectors aside and locate the pump motor. You will see clamps around the hoses attached to the pump. Using pliers, remove the clamps and then disassemble the ground wire.
Then disconnect the connectors around the wire. Now unscrew the screw holding the circulation pump. You will find it outside the pump. Take out the pump motor and remove the hoses with pliers and remove the pump.
Step 3: Check the circulation pump
At this time, you need to have a digital multimeter on hand. Select the appropriate resistance setting for your multimeter. Then measure the resistance at the terminal part to check the circulation pump of the dishwasher.
To do this, touch the probes on the terminals and check the readings. You will have a reading of over 100 ohms if the pump is working properly. If it is below 100 ohms, it should be replaced. It is also important to check if the pump motor is stuck.
This may be the reason why your dishwasher is not working. To test this, insert a screwdriver into the motor spindle and try turning it. If it is OK, the motor should rotate freely.
If it is not, then you also need to replace it. A faulty dishwasher motor often causes various problems. These include a dishwasher that does not start properly and abnormal noise during the wash cycle. (2)
Causes of a malfunctioning dishwasher
Even before you complete whirlpool dishwasher circulation tests, there are some telltale signs that show the pump is dead and needs to be replaced. You should pay attention to them when you are preparing to perform dishwasher circulation pump test on your device.
Here are the signs to look out for.
- You notice that your dishwasher stops in the wash cycle and when you check you see that the water is not pumping during the cycle. This may be a sign that your pump has a problem.
- You can see that the washer motor is in good condition and drain pump works good. However, after filling the dishwasher, there is no splashing of water. If you notice this, it means that the circulation pump is faulty and needs to be repaired.
- You have found that the washers are not turning again. This is often caused by stuffing dishwasher circulation pump. If the pump is clogged, the pressure required to rotate the wash arms will decrease, preventing the arms from rotating.
You can easily diagnose a problematic washing machine motor. If the dishwasher fills with water, but the spin does not work, then most likely the problem is related to pump motor. The good news is that this is an easy fix, all you have to do is clean the engine propeller.
Once you clean it, it will start working great and you will be able to use your dishwasher at optimum performance. To clean the motor screw, you need to disassemble the motor and clean everything thoroughly.
There is no need to rush to buy a new dishwasher if you notice that the old one is not working. You can fix some problems and fix them.
Summing up
The circulating pump usually sucks in the water that flows into the tub and directs it to the dishwashing sprinklers. Water passes through different filters and returns back to the pump to start a new cycle. If there is something wrong with the pump, it will directly affect the washing machine.
Therefore, if you notice that your dishwasher is not washing dishes properly, you should first check the circulation pump before troubleshooting any other part of the device.
Take a look at some of our articles below.
- How to test a fuel pump with a multimeter
- How to test a capacitor with a multimeter
- How to count ohms on a multimeter
Recommendations
(1) flood protection - https://interestengineering.com/7-inventions-and-ideas-to-stop-flooding-and-mitigate-its-effects
(2) wash cycle - https://home.howstuffworks.com/how-do-washing-machines-get-clothes-clean3.htm
