The Water Inlet Valve: A Troubleshooting Guide for Dishwashers

PartsFe
6 min readJun 26, 2023

Introduction:

Repair professionals often find that a few key components are responsible for most appliance issues. When it comes to dishwashers, the water inlet valve often takes the blame for malfunctions. In this article, we will explore the signs of a faulty water inlet valve, discuss whether it is suitable for DIY repair, and provide step-by-step instructions for troubleshooting the valve. However, it is important to note that working with electrical components carries risks, and if you are uncertain or lack the necessary tools, it is best to seek professional assistance.

Signs of a Faulty Water Inlet Valve:

Identifying the signs of a faulty dishwasher water inlet valve can help pinpoint the cause of problems. Look out for the following indicators:

  • Leaks fill the dishwasher when it’s turned off.
  • Inadequate water supply during a cycle, with the dishwasher filling slowly or not at all.
  • The possibility of dishwasher leaks onto the kitchen floor poses a potential hazard.
  • The majority of issues with water inlet valves can be attributed to a faulty seal or the failure of the solenoid.

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DIY Repair: Is It Advisable?

Attempting a DIY repair on a water inlet valve is not recommended for most homeowners. The procedure is far more intricate than it appears at first glance, encompassing certain potential hazards. Here are a few factors to consider:

Tools: You will need specific tools for the job.

Electrical components: Working with electrical parts increases the risk of accidents.

Brand-specific requirements: Different dishwasher brands may necessitate tasks such as wire stripping, terminal attachment, or creating a testing cord to check the valve’s electrical components.

Given these considerations, hiring a professional appliance repair service is usually the cheapest, easiest, and safest approach. Businesses such as West Coast Chief possess expertise in managing repairs of that nature

A Simple Check for the Inlet Valve:

If you still intend to proceed with the DIY repair, here is a basic troubleshooting method for the dishwasher water inlet valve. In order to perform this task, it is imperative to possess an ohmmeter:

  • Unplug the dishwasher from its power and water sources.
  • Carefully remove any wires attached to the inlet valve using pliers.
  • Attach an ohmmeter to the valve’s terminals. In the event that the meter exhibits an infinite measurement, it indicates the failure of one of the solenoids.
  • If the measurement is within the normal range, examine the valve for any remnants of food or sediment. Remove any obstructions without dismantling the valve.
  • If steps 3 and 4 do not reveal any issues, it is advisable to conduct a more comprehensive inspection or seek professional service.

A Closer Inspection of the Water Inlet Valve:

The following procedure involves working with electrical components. Please continue only if you are fully confident in your capabilities; otherwise, it is advisable to seek assistance from a qualified expert.

  • Separate the power connection of the dishwasher
  • Unplug the dishwasher or disconnect its power source. Additionally, deactivate the water supply.
  • Determine the inlet valve power type.
  • Please locate the Water inlet valve dishwasher and verify if there is a sticker or stamp present that indicates its voltage rating and the type of power it utilizes (AC or DC).
  • Create a unique power cable specifically designed for testing alternating current (AC) electricity. Utilize a standard power cord and modify it accordingly.
  • Use a power cord, To construct a testing cord for an AC valve, you will need a pair of insulated terminals that can be crimped, along with a dedicated crimping tool.
  • Remove the protective covering from the live and neutral cables, while setting the grounding wire aside.
  • Attach the insulated connectors to the exposed portions of the live and neutral wires (using a single connector for each wire).

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For DC power, use a battery pack.

  • To obtain DC power, acquire a battery pack of 12 volts that comes equipped with connected cables. Follow the same steps as in the previous section, using the battery pack instead of a power cord
  • Determine the connection type.
  • Examine the connections of the valve, which can be identified by either a pair of spade terminals or two small pins.
  • If you find the valve with male spade terminals, you can conveniently connect your test cord or battery pack directly.
  • In the case of pins, you will need to cut the wiring harness a few inches away from the valve. Strip the ends of all four wires.
  • Attach two male spade terminals to one end and two female spade terminals to the other end. This will facilitate easy power testing of the valve and swift reconnection to the dishwasher after the test.

Verify the water inlet valve.

  • Please open the water supply. Is there any water leakage from the valve when the dishwasher is not powered? If there is, it is crucial to replace the water inlet valve immediately.
  • If there are no leaks, you can proceed to connect your test cord or battery pack to the valve.
  • If water passes through the valve smoothly, then the inlet valve is not the cause of your dishwasher problems.
  • However, if the water flows slowly or doesn’t flow at all, it may indicate that the inlet valve needs cleaning. If cleaning doesn’t resolve the issue and the valve continues to restrict water flow even when free of debris, it suggests a broken valve that requires replacement.

For an Easier & Safer Repair, Call Professionals:

Undertaking a DIY repair of the water inlet valve can be challenging and time-consuming. If you do not possess the necessary expertise, it is advisable to abandon the DIY approach and contact a professional appliance repair service.

By calling in professionals, you can benefit from their experience and knowledge. They will accurately diagnose the problem, which may not necessarily be related to the water inlet valve, and provide an affordable solution based on the condition and age of your dishwasher. In most cases, they can have your dishwasher up and running smoothly by the end of their service call.

The water inlet valve is a commonly found culprit in dishwasher malfunctions, and being able to identify signs of its failure can be helpful in narrowing down the issue. While some individuals may attempt a do-it-yourself (DIY) repair, it is crucial to acknowledge the associated risks and complexities, particularly when working with electrical components. For a safer and more efficient repair, it is highly recommended to seek the assistance of professional appliance repair services. They possess the necessary tools, expertise, and experience to diagnose and resolve the problem, ensuring that your dishwasher operates flawlessly once again.

If you require OEM parts for your dishwasher, you can visit PartsFe. Thank you for taking the time to read this article, and we hope it provided you with valuable insights and guidance for your dishwasher repair needs.

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