GE manufactures one of the best dishwashers in the world. But this does not mean that they can never have issues. The GE dishwasher H20 error code is one of the most common issues among them.
In this article, I will be sharing why this error code appears on the dishwasher’s display. We will also learn the troubleshooting steps to resolve the H20 error. I promise that by the end of the article, you will fix the error code.
But first, let’s understand the meaning of this error code.
What does the H20 error code mean on the GE dishwasher?
The H20 error code simply means that your dishwasher is not getting enough water. This can be due to several factors and phenomena, including water supply and pressure faults.
However, you can fix the H20 code by yourself without the help of a verified appliance technician. Just take a look at the causes and solutions I have shared below.
Why is my GE Dishwasher displaying an H20 error code?
If this error code appears on your new GE dishwasher, you don’t really have to worry about it. Error code on the new dishwasher can appear due to its newness.
Just leave your dishwasher alone. The error will be fixed eventually.
But If your dishwasher is old, there can be a number of reasons that can cause H20 error codes on your dishwasher. However, some of the most common reasons are given below:
The appliance is not leveled correctly.
One of the most common reasons for the H20 code is the unleveled dishwasher. When your dishwasher is leaned or tilted, it lowers the water level in some areas of the dishwasher, leading to an H20 error.
Ensure that your appliance is leveled correctly to prevent the water from going too forward or backward.
So, check the leveling of your dishwasher and correct it if the dishwasher is leaned or tilted.
The water supply knob is off.
Most dishwashers have a water supply knob located near the water supply valve. It is used to control the passage of water in the dishwasher.
If the water valve is turned off, the water cannot get into the dishwasher. This will result in a low water situation and H20 code on the screen.
Make sure that the water supply is turned on before doing any further repairs.
Inadequate water pressure
The water pressure plays a significant role in supplying the water into the dishwasher. There is a certain amount of force needed to push the water up through the inlet water hose and supply valve.
If the water pressure is lower than required, the water will not flow into the dishwasher, leading to an H20 error code on the screen.
Damaged or clogged water Inlet valve
Another possible reason for the H20 code can be a damaged or clogged Inlet valve. The water Inlet valve is the entry point of water into the dishwasher. It can easily get blocked or damaged as it is completely exposed to food particles and rust.
If the Inlet valve is clogged or damaged, the water will not be able to enter, and the dishwasher will start displaying the H20 error on the screen.
It is located on the back side of the dishwasher. Inspect the area around it and remove the obstacles like large food particles, debris, or any build-up that can cause blockage.
Blocked Inlet hose
The Inlet hose is responsible for supplying the water to the dishwasher. This hose directly connects the water Inlet valve to your home water supply.
If somehow the Inlet hose gets clogged due to some dirt or debris, the water will be unable to reach the dishwasher and cause the H20 error on the display. In such a case, you will have to disconnect and unclog the hose manually.
A faulty Float switch
The float switch is one of the essential components of the dishwasher. It is responsible for controlling the water level in the dishwasher. It opens and closes the water Inlet valve according to the water requirement in the dishwasher.
If it is malfunctioning or has any faults, it means your dishwasher isn’t getting enough water. As a result, you will see an error code on the SSD screen.
To fix this issue you will need to replace the float assembly.
Malfunctioning Pressure sensor
If the water pressure is sufficient, but the appliance still shows the H20 code, it could be due to a malfunctioning Pressure sensor.
The Pressure sensor is used to detect the water pressure. If the sensor is not functioning correctly, it will send false information to the circuit board that the pressure is insufficient. And, due to that wrong information, the dishwasher will display an error code.
Damaged Inlet hose
The dishwasher receives the water through the Inlet hose. It can easily be twisted or kinked during regular usage.
A twisted or kinked hose will block the water from flowing through it. As a result, your dishwasher will face a low water situation and show the H20 error code.
How to fix the H20 error code on the GE Dishwasher?
Now, let’s get into what troubleshooting steps you can take to clear the H20 code on your dishwasher.
Turn on the hot water valve.
Before trying any other solutions, make sure you have turned on the Hot water valve. It is used to fill up the dishwasher with water.
You can find the hot water valve under your sink. So, locate the valve and turn the knob counterclockwise. This will help produce the exact pressure needed to fill the dishwasher with water.
After that, Restart your dishwasher and check if the error code is cleared.
Select another cycle option.
You can try this one if you want a quick solution for this error code.
First, change the cycle option of your dishwasher, and after that, put the option back of your choice. Doing this will probably clear the error code from your dishwasher.
If this trick does not work for you, try the next solution.
Unclog the water supply hose.
A clogged water supply hose can also be a reason for an H20 error on your dishwasher. You will have to inspect the water supply hose to check and resolve this issue.
Follow the instructions given below to Inspect the hose for blockage.
- First, turn off your dishwasher’s power supply by flipping the circuit breaker.
- Remove the lower panel to access the junction box.
- After that, Unscrew the junction box and remove the bracket from its place.
- Now, disconnect the junction box wires. You can take a picture of the wire connection so that you will not forget the orientation of the wires.
- Next, disconnect the water Inlet hose and adjust the dishwasher’s mounting screws.
- Now, you can pull out the dishwasher from its place.
- Check the hose carefully for any visible obstacles like dirt and debris.
- If you find any clog, remove it with a stick or something that can go inside the hose.
- If the obstacle is not visible, put the hose in a bucket and run the warm water through it.
- Wait for the clog to come out in the bucket.
- Lastly, reconnect and assemble all the parts when the clog is removed.
Replace the water Inlet valve.
Another reason for the H20 error code can be a damaged Inlet valve. In such a case, you will need to replace the water inlet valve.
To do so, follow the given steps:
- First of all, turn off the power supply and water supply of your dishwasher.
- After that, remove the lower access panel and detach the water supply line from the Inlet valve.
- Now, unscrew the junction box. You will see some wires there. Disconnect all of them.
- After that, remove the drain hose and unscrew the mounting bracket so that you can adjust the dishwasher.
- Now, unscrew the damaged water Inlet valve and disconnect all of its wires.
- Take the new water Inlet valve and connect it to the Inlet hose.
- Reconnect all of its wires and secure it by tightening its screws.
- Lastly, reassemble all the removed parts and put the dishwasher back in its place.
Replace the Pressure sensor.
As I mentioned above, a malfunctioning pressure sensor can also trigger the H20 error code. You can find it behind the junction box of your dishwasher.
To fix the issue, you will have to replace your Pressure sensor. So, purchase a pressure sensor according to your dishwasher model from an online or local Ge appliances store.
You can follow the below-given steps if you want to replace the pressure sensor of your dishwasher.
- For safety measures, turn off your power and water supply to the dishwasher.
- After that, proceed to remove the screws of the lower access panel.
- Next, disconnect the water supply hose from the Inlet valve using a plier.
- Now, remove the junction box lid and untwist all of its wires.
- After that, unscrew the dishwasher mounting screws to lower its legs.
- Now, pull out the dishwasher and lay it on its back.
- Remove the wire harness. And rotate the pressure sensor counterclockwise to detach it from its position.
- Fit the new pressure sensor by rotating it clockwise and reconnecting all the cables.
- Lastly, reassemble the junction box and close the access panel to complete the replacement.
Test the float switch.
The next component you should check is the Float switch. It is located inside the dishwasher’s tub. You will have to perform an electrical test to check if it is faulty. So, here are the steps you will need to follow while doing the test.
- Start with cutting off the power supply and water supply of the dishwasher.
- Next, open the dishwasher’s door and unscrew the access panel.
- Then, put the access panel aside and remove the screws of the inner panel.
- Now, detach the Float switch from its place and disconnect its cable connections.
- Use a multimeter to check the continuity of those cables.
- If the multimeter does not show any reading, you should replace your Float switch with a new one.
You you want to replace the float yourself, you can take help from the video.
What should I do if the GE Dishwasher H20 code persists?
If you have tried and tested all of the troubleshooting steps mentioned above steps, but your dishwasher still shows the error code, it means your dishwasher has some serious issue.
But don’t worry! Here are the further steps you can take if the H20 code persists on your dishwasher.
Call the GE customer support.
One of the best steps you can take while facing an error code is to call the GE official customer support. The GE has provided this portal so that the users can ask about their problems or doubts related to their appliances.
To get their number, go to GE’s official website and click on customer support on the navigation bar. Find the customer support number of your region and call them.
Seek professional assistance.
Another thing that you can do is seek the assistance of a professional technician. They are certified and trained to fix the issues with appliances. You can find them either in the local appliance repair shop or book an online appointment.
Tell them about your dishwasher model and the problem you are facing. Also, disclose all the steps you have tried to fix the issue. Being a professional technician, they will surely help you in getting rid of the problem.
How to Maintain Your Dishwasher to Prevent the H20 Error?
To maintain your GE dishwasher and prevent the H2O error, regular maintenance is essential for ensuring proper water flow and sensor functionality. Here are some key maintenance tips:
- Regularly Clean the Dishwasher Filter: Over time, food particles can clog the dishwasher filter, impeding water flow. Clean the filter every few months by removing it and rinsing it under warm water. Use a soft brush to eliminate any stubborn particles that might remain. This simple step ensures your dishwasher operates efficiently and prevents blockages that could lead to errors.
- Inspect and Clean the Spray Arms: The spray arms, which distribute water throughout the dishwasher, can become clogged with food particles or mineral deposits. Remove the spray arms periodically and clean the holes with a brush and vinegar. This process dissolves any buildup, ensuring that water is evenly distributed and reaches all dishes.
- Use the Correct Detergent: It’s crucial to use the recommended detergent for your GE dishwasher. The wrong detergent can cause residue buildup that clogs components and affects water flow. Check your dishwasher’s manual for the appropriate type of detergent to use, which will help maintain optimal performance.
- Run a Vinegar Cycle: Running an empty cycle with a cup of vinegar on the top rack periodically can help dissolve grease and mineral deposits throughout the dishwasher. This practice cleans out hidden parts of the dishwasher and keeps it smelling fresh while preventing buildup that can lead to errors.
- Check the Water Inlet Valve and Hose: Ensure that the water inlet valve and hose are clear and free from blockages or kinks. A restricted water supply can trigger the H2O error. Regularly inspecting these components and ensuring they are unobstructed will help maintain a steady flow of water to the dishwasher.
- Monitor Water Pressure: Adequate water pressure is crucial for the dishwasher’s performance. Low water pressure can cause the H2O error. Check that the water supply valve is fully open and ensure that your home’s water pressure meets the dishwasher’s requirements as stated in the user manual.
By following these maintenance tips, you can help prevent the H2O error and keep your GE dishwasher running smoothly and efficiently. Regular upkeep ensures that your dishwasher performs optimally, saving you time and avoiding potential repair costs.
Frequently Asked Questions
Why does my GE dishwasher say h2o?
If your dishwasher displays the h20 code on the SSD screen, it indicates the low water situation. Your dishwasher will not start the cycle due to the lack of water.
What Are the Symptoms of an H2O Error on a GE Dishwasher?
The H2O error on a GE dishwasher signifies insufficient or no water supply. Symptoms include the dishwasher not filling with water properly during the cycle, or stopping shortly after starting. Causes can include low water pressure, a closed supply valve, or malfunctioning components like the pressure sensor or water inlet valve.
Is It Normal for My GE Dishwasher to Display an H2O Error Code Occasionally?
Occasional H2O errors can occur, particularly with new dishwashers or after plumbing changes. Such errors might resolve themselves as the water supply stabilizes. However, frequent occurrences could indicate an underlying issue that requires investigation and repair to ensure proper dishwasher performance.
Is the H2O Error on My GE Dishwasher a Serious Issue?
The H2O error is not typically serious, but it should be addressed. It usually signals a problem with water supply or pressure, which can impact the dishwasher’s efficiency. Promptly resolving the issue can prevent further complications and ensure the appliance operates effectively.
Can I Continue to Use My GE Dishwasher With the H2O Error?
It’s not recommended to use the dishwasher with an H2O error, as this indicates inadequate water supply, leading to incomplete cleaning and possible appliance damage over time. Diagnosing and resolving the issue before further use is the best course of action to prevent potential harm.
Can I Run a Diagnostic Test on My GE Dishwasher With an H2O Error?
You can run a diagnostic test on your GE dishwasher to identify the H2O error’s root cause. Enter diagnostic mode by pressing and holding the ‘Start’ and ‘Cycle Select’ buttons for five seconds in standby mode. This process tests components and displays error codes to help pinpoint the issue.
What does the flood switch do on a GE dishwasher?
The flood switch is responsible for controlling the water level in the dishwasher. It opens the Inlet valve when the water is required and closes the Inlet valve when water is not needed. It can be found in the tank of the dishwasher.
Conclusion
In conclusion, the H20 code on GE dishwashers is a common issue faced by many users. This error code means that your dishwasher is in a low water situation and lacks the required water.
Common causes for this error include a broken inlet valve, malfunctioning pressure sensor, faulty float switch, and clogged Inlet hose. However, all these issues are minor and can be fixed by following the DIY steps mentioned above.
In case the issue persists, even after doing the troubleshooting steps, you can always call a professional technician or GE customer support.
This was the troubleshooting guide for the H20 error code. I hope you found it knowledgeable. If you have any questions, you can ask me in the comment section given below. I will feel great to help you further.
