Question about Bosch Nexxt Premium WFMC6400UC Front Load Washer

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Message: drainage blocked

The pipe in the back is not clogged, it is wide open. When we removed the cover for the pump in the front and open the valve, the water obviously drains out. However, when you put it back together and try to run it, it will go through a cycle and when it gets near the end of the cycle that when the message appears drainage blocked and won't drain.

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Happy to assist you,

You said,
The pipe in the back is not clogged, it is wide open. When we removed the cover for the pump in the front and open the valve, the water obviously drains out. However, when you put it back together and try to run it, it will go through a cycle and when it gets near the end of the cycle that when the message appears drainage blocked and won't drain.

The electronic type washers , can be unplugged and after 5 minutes restarted and the system is then rebooted. This resets the system and clears the codes !

If the drain is not blocked then you have a faulty sensor or a bad pump

Posted on Sep 14, 2008


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I have a bosh washing machine WFO2462 and my problem is that: washing solution does not completely drain. I have cleaned the pump several times but the problem still remains and every time I want to use...

I believe that it's on the front bottom right side of the machine. Press the tab down and open the little door and you'll see a hose and a circular cover. You need to place a little towel on the floor and a shallow pan. Pull the drain hose out just about 6 inches and pull off the end plug. This will drain the remaining water in the washer. Put the cap back on the hose and tuck it back into place. Unscrew the round cover and pull which will be the filter. Should be clogged and rinse out the filter at the faucet and reinstall. That should do the trick.

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I keep getting a E 4 signal. A Bosche rep told me the signal is due too much soap in the washer and can be cleaned out with softner. No luck. The cycle starts but stops in the middle with water left...

You can find this issue addressed on another site....

Due to popular request, here is more information on the E:04 problem, and some assorted tips:

If you get the E:04 error, he first thing to try is turning the washer off and back on again. You will more than likely have to begin the cycle over, but sometimes this will clear the message.

Since clogging up the drainage pipe, I have gotten that E:04 message when I've used too much laundry soap. I think that's the main reason people see that message. Just turn the washer off and start the cycle again WITHOUT adding any additional soap. I think the suds somehow make the washer think the drainage pipe is clogged.

The other thing that can happen is a genuine clog, like in the case I described in my review. The Bosch is excellently engineered to protect the pump from damage. There is a circular panel on the front of the washer that hides the drainage hose. Remove this panel (simple, but there is a knack to it) and you can pull the drainage hose out. Keep a bucket handy because the hose will be full of water. You may lose a little bit of skin off your hand during this process, and it's best if you can have the salesman demonstrate this procedure for you. That panel is not the easiest thing to remove. You have to reach in past some sharp metal to get to the drainage pipe. Wrap a towel around your hand and BE CAREFUL. It's definitely worth a shot if saving a service call is worth it to you (and clearing out clogs are NOT covered by the basic warranty). My service man assured me that removing this panel would not invalidate the warranty, but you may want to check with your dealer before you open up yours.

It's been about six months and I still adore my washer. I've found the Temp Boost setting is best for cotton towels, Delicates is great for, well, delicates, the Warm Permanent Press setting is great for jeans, and Cold Permanent Press great for most clothes. To avoid getting small items stuck between the glass and the rubber inner seal, do not overload the washer. If I try to wash too many socks, one will now and then end up in that small space. You can cram one big thing in the washer and it will still get clean (I regularly wash a bathroom carpet in there), but DO NOT cram it full of lots of little things. Follow the helpful loading instructions for each cycle.

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F-18 means the pump is blocked. When the machine fails, there may be an "electrical" smell as the motor has laboured. This is normal. Clean on bottom right corner and you should be fine. Drain pipe clogged. Follow insrtuctions that came with machine to drain using the little pipe bottom right. Then unscrew & clean rotor. pull out wahing machine and check drainage pipe at back is not blocked. Unscrew the drainage pipe from the sink waste and clear out. Also enaure pipe is kept high off floor and is not too long. This will help drainage and prevent pump trying to pump waste water upwards. If the pump is too old or worn out then it needs to be replaced. You can get required parts from
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The screen is flashing F3, what does this mean?

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1. Switched the machine to 'pump-out' and got rid of as much water as possible.
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3. Removed the panel at the bottom of the back of the washer to expose the pump, the bottom of the drum and the main washer motor.
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We had the same problem with opening the pump cover; 
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Undo the screw holding the filter housing to the front of the machine and lower it inside the machine, next unscrew the hoses and disconnect the wiring from it. This will allow you to pull the filter out completely and to open it up.
Clean the pump, check that there's nothing in the pipes/hoses and then put it all back together again in reverse order to which you took it apart in. (i.e. put together the last part you took apart and work backwards). 

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Hope this helps. Please remember to rate my answer. Many thanks.

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