The dishwasher does not drain properly - Thermador DWHD43CS Stainless Steel Dishwasher

The F179 fault code on a Miele dishwasher usually indicates an issue with the drainage system. Here are a few steps you can take to troubleshoot and potentially resolve the issue:

1. Check the Drain Hose: Start by inspecting the drain hose for any kinks, clogs, or blockages. Ensure that the hose is properly connected and not damaged in any way. If you find any issues, clear the blockage or replace the hose if necessary.
2. Clean the Filters: Remove and clean the filters inside the dishwasher. Accumulated debris in the filters can hinder proper drainage. Rinse the filters under running water to remove any food particles or residue.
3. Check the Drain Pump: The drain pump is responsible for removing water from the dishwasher during the drain cycle. Make sure the drain pump is free of any obstructions. You can access the drain pump by removing the bottom panel of the dishwasher. If you find any debris or blockage, remove it carefully.
4. Ensure Proper Installation: Verify that the dishwasher is installed correctly, including the drainage system. Ensure that the drain hose is properly connected to the drain pipe and that there is no obstruction in the plumbing system.
5. Reset the Dishwasher: Try resetting the dishwasher by turning off the power at the circuit breaker for a few minutes. Then, turn the power back on and run a test cycle to see if the fault code clears.

If the pump has been replaced and the dishwasher is still not pumping water out during the diagnostic cycle, there are a few things you can try:

1. Check the drain hose: Make sure the drain hose is not clogged or kinked. A clogged or kinked drain hose can prevent the dishwasher from draining properly.
2. Check the drain valve: The drain valve controls the flow of water out of the dishwasher. If it is faulty, the dishwasher may not drain properly. Test the drain valve to make sure it is functioning properly.
3. Check the float switch: The float switch is a safety feature that prevents the dishwasher from overfilling with water. If it is stuck or faulty, it can prevent the dishwasher from draining properly.
4. Check the control board: If none of the above steps resolve the issue, there may be a problem with the dishwasher's control board. A faulty control board can prevent the dishwasher from draining properly.

If you are not comfortable performing these steps yourself, it may be best to contact a professional dishwasher repair service for assistance.

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Hello friend, thanks for your post!

I see you are having difficulty with your Frigidaire dishwasher not draining. Check the filter at the bottom of the dishwasher because if that gets clogged then it will not allow your dishwasher to drain properly. Additionally, check to assure that the sump pump is hooked up correctly to allow proper siphoning of your dishwasher. If that is correct it could be a potential problem with your control panel or drain pump and I would recommend consulting with a professional technician for proper diagnosis and repair. I hope this helps to some degree. -Matt

check your piston and nut assembly has to have air tight seal to drain properly should be free moving if not replace it about $15 online

Hello, Following things should be checked properly to see what actually the matter is.
1)Drain Hose It is quite common for a dishwasher to not drain because either the drain hose or the air gap (if the unit has one) is clogged up. Drain hose clogs commonly occur where the hose is attached to the main household drain line, or where the hose connects with the garbage disposer. Try removing the drain hose to unclog any debris. Don't forget to reattach the hose before you start your dishwasher again. 2)Pump Assembly The pump assembly is comprised of a pump, wash impeller, and drain impeller. The pump ejects the water from the unit, the wash impeller pushes water through the spray arm, and the drain impeller directs the water towards the drain port. Examine your dishwasher's pump assembly. Clean out any debris that may be blocking it. Replace the pump assembly if any of its parts appear to be worn or defective. Belt It isn't very common, but sometimes a dishwasher's pump assembly is driven by a belt. If that belt becomes worn and defective, then it cannot properly run the pump that drains your dishwasher's tub. If your dishwasher uses a drive belt, examine it now. If it shows signs of wear, replace it. 3)Timer A defective timer could interfere with a dishwasher's ability to drain properly. Test your dishwasher's timer mechanism. If it is faulty, replace it. Keep in mind that you can replace either the entire timer assembly or just the timer's motor. 4)Motor The motor plays a key role in a dishwasher's ability to drain water. If your dishwasher's motor is not functioning properly, it will negatively affect the draining capability of your machine. Test your dishwasher's motor for continuity. If it fails the test, replace the motor. 5)Drain Valve and/or Solenoid
In some models, a valve has to open in order for the water to drain out of the dishwasher. This valve is controlled by a solenoid, but it is the timer that decides when the valve should open. If your timer is working fine, check the drain valve and its solenoid. If need be, replace them. Thanks

Hi

If you are noticing that the dishes are not clean, then there are a few things to check for. Check the soap powder if it's kept in a dry environment. Also try replacing the powder with something like a gel or liquid. Next thing to check for is the water pressure and fill valve. Check if the water is filling in and the spray arms are throwing the water with enough pressure. Try and listen to the sound if you hear a proper spraying action sound. If it seems as a low water pressure then check the fill valve.

Now, check if dishwasher is draining the water or not. While the dishwasher is working check whether the dishwasher is draining and there is not much left out water after the cycle is complete.

Dishwasher not draining issue usually occurs due to kinked drain pipe, clogged drain filter or drain pump. Check the drain hose for any visible clogging, remove if present. If no visible lint is present then remove then turn off the dishwasher and remove the drain hose and check for any visible clogging. If still not visible then the drain filter or drain pump is clogged and you'll need to clean the drain filter and drain pump.

The water temperature plays a major role in cleaning of dishes. The temp should be between 125 and 150 F for dishwasher to clean the dishes.

Hope this helps...

Daniel

Check for plugged drain hoses in your dishwasher, also make sure that the pump is working correctly

Hello there:
Please try these things below my post and click on the links that are available for you ok
I hope that tthis is very helpful for you
best regards michael
Water will not drain from my dishwasher. Investigate these six areas if water will not drain from your dishwasher :
Drain Hose

It is quite common for a dishwasher to not drain because either the drain hose or the air gap (if the unit has one) is clogged up. Drain hose clogs commonly occur where the hose is attached to the main household drain line, or where the hose connects with the garbage disposer. Try removing the drain hose to unclog any debris. Don't forget to reattach the hose before you start your dishwasher again.

• How to check a drain hose.
• How to replace a dishwasher drain hose.



• Find a drain hose for your dishwasher.

Pump Assembly

The pump assembly is comprised of a pump, wash impeller, and drain impeller. The pump ejects the water from the unit, the wash impeller pushes water through the spray arm, and the drain impeller directs the water towards the drain port. Examine your dishwasher's pump assembly. Clean out any debris that may be blocking it. Replace the pump assembly if any of its parts appear to be worn or defective.

• Find pump parts for your dishwasher.

Belt

It isn't very common, but sometimes a dishwasher's pump assembly is driven by a belt. If that belt becomes worn and defective, then it cannot properly run the pump that drains your dishwasher's tub. If your dishwasher uses a drive belt, examine it now. If it shows signs of wear, replace it.

• How to examine a dishwasher belt.
• How to replace a dishwasher belt.



• Find a belt for your dishwasher.

Timer

A defective timer could interfere with a dishwasher's ability to drain properly. Test your dishwasher's timer mechanism. If it is faulty, replace it. Keep in mind that you can replace either the entire timer assembly or just the timer's motor.

• How to test a dishwasher timer.
• How to replace a dishwasher timer.



• Find a timer for your dishwasher.

Motor

The motor plays a key role in a dishwasher's ability to drain water. If your dishwasher's motor is not functioning properly, it will negatively affect the draining capability of your machine. Test your dishwasher's motor for continuity. If it fails the test, replace the motor.

• How to test a dishwasher motor.
• How to replace a dishwasher motor.



• Find a motor for your dishwasher.

Drain Valve and/or Solenoid

In some models, a valve has to open in order for the water to drain out of the dishwasher. This valve is controlled by a solenoid, but it is the timer that decides when the valve should open. If your timer is working fine, check the drain valve and its solenoid. If need be, replace them.

• How to check a dishwasher drain valve and solenoid.
• How to replace a dishwasher drain valve solenoid.

there are several possible causes for your trouble. begin by disconnecting the drain hose at both ends and checking to be sure it is not partially blocked. Then check the pump to be sure there is no chunk of glass or other debris partially blocking it.