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Monthly Archives: July 2017

How To Test A Dishwasher Water Inlet Valve (The Right Way)

Posted on July 23, 2017

If your dishwasher is not filling with water or filling with water while it is not in use then you should test the water inlet valve.  This free video shows step by step instructions on how to test your dishwashers water inlet valve.  Other videos online show to test the water inlet valve by ohming the solenoid on the valve.  This test is not very conclusive and it doesn’t actually tell you if the valve is working properly.  The testing process shown in the video below is the only conclusive way to test the valve.

If you find that you have a bad water inlet valve you can shop for a new one on our online store by searching with your appliances model number, or entering the part number off of the water valve here: https://partsdr.com/appliance-type/dishwasher-parts/valve-parts/ We sell new OEM appliance parts for Whirlpool, Maytag, Kenmore, Amana, Estate, Roper, Frigidaire, Electrolux, Tappan, Westinghouse, Kitchen Aid, Jenn Air, Bosch, LG, Samsung, and more.

Items used to make test cord:

Cord:  https://partsdr.com/part/wx09x70910-power-cord/
Spade terminals: http://amzn.to/2u7aaGt
Crimping tool: http://amzn.to/2uZhQqL
Wire stripper: http://amzn.to/2t2uPGX

Items used to make battery pack:

Battery pack: http://amzn.to/2twY7Rj
AA Batteries: http://amzn.to/2tEeBFY
Spade terminals: http://amzn.to/2u7aaGt
Crimping tool: http://amzn.to/2uZhQqL
Wire stripper: http://amzn.to/2t2uPGX

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Video Transcript:

Hi, this is Ryan with Parts Dr and today I am going to show you how to test the water inlet valve on your dishwasher to see if it is good or bad.   Other videos online show to test the valve by measuring the resistance of the solenoids on the valve.  This test is not very conclusive and doesn’t actually tell you if the valve is working properly.  The testing process I am going to show you is the only conclusive way to determine if the water valve is working properly.
Water valves can fail in a variety of ways.  They can start to leak which can cause water to fill up inside the dishwasher when it is not in use.  They can also cause the dishwasher to not fill with enough water or not fill with water at all.

The first thing you will need to do is unplug or turn off the power to the dishwasher.  Next you will need to gain access to the water valve and look for a sticker or stamping in the metal on the side of the valve.  What we will first need to know is if the water valve is powered by AC or DC voltage and what the voltage rating is.  You should should see a sticker or stamping in the metal with information like this on the side of the valve.  To test the valve we are going to need to apply power to the valve to manually actuate the valve to see if it is working properly.

If your dishwasher has a AC voltage water valve, it is most likely powered by 110-120v AC power which is the standard power that comes from the power outlet in your house.  We are going to first need to make a test cord to apply power to the water valve.  To make a test cord you are going to need a power cord, two crimp on insulated terminals, and a crimping tool.  I will include links to the items we used to make the test cord in the description below.

If the wires are your test cord are not already exposed you will need to strip the insulation from them so they look like this.  On the power cord we are using here, the green is the ground wire and the white and black are the two power wires.  If the power cord you are using is not color coded, you will need to test each wire with a multimeter for continuity to see which wire is ground, hot, and neutral.  The green is the ground wire, the white is the neutral, and the black is the hot wire.  We will not be using the ground wire on the test cord, so we are going to cut that off.  Now we are going to crimp on an insulated 1/4” female spade terminal onto each of the white and black wires.  And now the test cord is done and ready to use.

If your dishwasher has a DC voltage water valve, it is most likely power by 12-14V DC power.  We are going to use a 12V battery pack that uses 8 AA batteries for our power supply.  This battery pack works nicely because it has wires coming out of it that we can crimp out spade terminals to and it also has an on/off switch that we can use to switch the power on and off.  You can also use any 12V DC battery that you can attach wires to.  To get the battery pack ready we are just going to need to crimp on a female spade terminal onto each of the two wires.  I will include links to the items we used for our battery back in the description below.

Next we need to inspect the valve to see what style wire terminals it has.  There are two common styles of terminals we see on most water inlet valves.  Most either have two 1/4” male spade terminals, or two smaller pins that stick out of the valve.  If your valve has the 1/4” spade terminals, we will be able to directly connect our test cord or battery pack directly to the valve.

If the valve has two pins, we will need to cut the wiring harness a few inches away from the valve.  Next we will strip all four wires using a wire stripper.  On one side of the harness we will crimp on two male spade terminals.  And on the other side of the harness we will crimp on two female spade terminals.  This will allow us to connect our power source to the water valve and reconnect the harness back together when we are done.

To test the valve you will need to make sure the water is turned on to the dishwasher and the water supply to the dishwasher is flowing at a good rate.  Let the valve sit for little while and make sure no water leaks from the outlet of the valve.  If the water valve leaks when there is no power supplied to the valve then it is bad and should be replaced.

Next connect the battery pack or test cord to the water valve.  It does not matter which wire goes to which terminal.  Now turn on your power supply or plug in your test cord.  If the water valve is good, the water should flow out of the valve at a steady rate.  If no water comes out of the valve or the water flow seems restricted or slow then you should replace the valve.  The water flow rate should be about that same as the water supply line to the dishwasher.  You can also check your dishwashers owners manual or installation instructions for the manufactures recommended water supply specifications for the psi and flow rate.  Do not apply power to the water valve for more than 1 minute at a time before letting it cool down for a few minutes as it can damage the valve.

If the flow rate on your water valve is slow, it can be caused by sediment that has built up on the screen of the valve or inside the valve.  On most water inlet valves the screen is not removable.  Do not try to disassemble the water valve to try to clean it.  We often see people try to do this and it will almost always result in leaking afterwards which can flood and damage your house.  For the cost of replacing the water inlet valve it is not worth damaging your house.

If you find that you have a bad water inlet valve and you need to purchase a new one, you can purchase one from our online store by clicking the link in the description below.  Please be careful when shopping water inlet valves as many stores sell lower quality aftermarket water valves.  You can be assured when you purchase from Parts Dr that you will receive a new OEM water valve.

Please subscribe to our youtube channel for more appliance repair videos, and if you found this video helpful please click the thumbs up button below.  You can also stay up to date by liking us on our Facebook page, and following us on Twitter.

How to test Whirlpool Thermistor Part # WP8577274

Posted on July 21, 2017

Whirlpool thermistor part number WP8577274 is used on many Whirlpool model dryers including some Maytag , Amana, Kenmore, Crosley and Inglis model dryers. When this thermistor fails it can cause your dryer to stop running or not heat correctly and display a F-22, F-23, E1, or E2 error code. If you are receiving either any these error codes you should test the thermistor.

Click the link below to purchase this part from our online store:

Whirlpool OEM part number: WP8577274 (PD00002401)

Tools required:
Multimeter or Ohm meter

This thermistor replaces these parts numbers:
3390292, 3406294, 3976615, 772546, 8577274, 1181075, AP6013514, PS11746740, EAP11746740

Resistance Chart:

Thermistor Resistance Chart

Video Transcript:

Hi this is Ryan with Parts Dr, and today I am going to show you how to test the thermistor on your dryer to see if it is good or bad.  This thermistor is a temperature sensor that measures the exhaust air temperature inside the dryer for the control board so it can maintain the desired temperature inside the dryer.

When the thermistor fails it can cause the dryer to display a F-22, F-23, E1, or E2 error code.   The dryer can display one of these error codes if the thermistor is shorted or open.

To test your thermistor you will first need to unplug the dryer, disconnect the wires to the thermistor, and remove the thermistor from the dryer.  Using a multi meter you will need to do an ohm test to check the resistance of the thermistor.  It is important to note that you can NOT do a continuity test on a thermistor.  Thermistors have a high ohm value that won’t register on a continuity test on most multimeters.  If you have an auto ranging multimeter, then turn the meter to the ohm setting.  If you have a manual ranging multi meter you will need to set the meter to the 20K or 40K setting.

Place one of each of the meters probes on each of the thermistors wire terminals.  A good thermistor should have an ohm reading around 11K Ohms at room temperature.  If your ohm reading is far higher or lower than this then you should replace the thermistor.  The resistance value of the thermistor varies depending on the temperature of the dryer, here is a chart that shows the different resistance values at different temperatures.

If you find that you have a bad thermistor and you need to purchase a new one, you can purchase one from our online store by clicking the link in the description below.  Please subscribe to our youtube channel for more appliance repair videos, and if you found this video helpful please click the thumbs up button below.  You can also stay up to date by liking us on our Facebook page, and following us on Twitter.

Independence Day Holiday Shipping Notice

Posted on July 1, 2017

In observance of the Independence Day holiday our offices with be closed Tuesday July 4th, and we will reopen for normal business hours on Wednesday July 5th.  Orders placed after 3:00PM CST on Monday July 3rd will ship out Wednesday July 5th.  Shipping Carriers Fedex, UPS, and USPS will not be delivering any packages on Tuesday July 4th, so please plan and choose your shipping method accordingly. Happy Independence Day from the Parts Dr team!

july4th

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