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FIXED SHX7PT55UC/07 Bosch Dishwasher E24 Watertap Issue

jaloosk

Premium Member
Joined
Dec 25, 2020
Messages
3
Location
Ontario
Model Number
SHX7PT55UC/07
Brand
Bosch
Age
1-5 years
I've been working on this problem on and off for almost a year now. I started getting this error on my dishwasher in January, 2020. After troubleshooting, I realized I had a bad drain pump. I replaced the drain pump, and all was OK for a few months. Then, around April, I had the issue again, but this time there was broken glass in the bottom of the dishwasher, under the filter.

Starting August, 2020, I've been having this problem intermittently, and over the past couple of weeks it's been getting more and more frequent. I checked the drain hose (again) and the supply hose (again) and there are no issues there. Despite it working fine for the last 4 years, on the recommendation of a friend, I decided to install another under-sink air vent, which did nothing. I pulled the drain pump and tested it again, but this time it was reading OK. The part is cheap however, so I got another one and replaced it again. Still have the same problem.

Today, after reading this thread: https://www.applianceblog.com/mainf...c-03-intermittent-e24-error-code.56745/page-3 I decided to pull the water matrix and see what issues I could find there. There was lots of gunk in the air valve of the water matrix. using Drano and CLR (at separate times, because I ran out of Drano) and a wet vacuum, I cleaned out the matrix, sump hose and drain hose. There was rice and some gunk in the air vent, and some corners of the drain side of the matrix. Also, when I cleaned out the wet vacuum, there were popcorn seeds, more rice kernels and other unidentifiable gunk in there too.

If this doesn't work, I think my next move would be to replace the recirculation pump assembly. I'm pissed that I've only got 4 years out of a $1300 dishwasher before having issues with it...my last Bosch lasted 7 years before giving me problems.

Any tips or suggestions I may have missed would be appreciated.
 

jaloosk

Premium Member
Joined
Dec 25, 2020
Messages
3
Location
Ontario
Update: after getting an E15 error (because i spilled water in the tray under the dishwasher) I've been able to successfully run through 2 cycles with no E24 errors. Will update this thread again with further action if I have to take it, but so far, so good. :)
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
135,824
Location
Vicksburg Junction, Arizona
Ok sounds good, yes keep us posted.:)

Jake
 

Hildebrau

Premium Member
Joined
Jan 26, 2021
Messages
3
Location
Austin, TX
@jaloosk, or anyone really, can you supply more information about this water matrix? I have a Bosch SHX68E15UC dishwasher doing E24. I've cleaned out the drain hose w/ a shopvac every which way. The only way I can get it to run is to interrupt the start up cycle by opening/closing the door about 40 seconds in as previously discussed.

Where is the water matrix? Is that something that can be replaced, or is cleaning it and praying I got it clean enough my only option? ;) I'm imagining it is on the rear of the washer, so I'd have to pull the unit out. Is that correct?

Do you have any pictures or make shift tutorial on the procedure? I assume since you've been quiet for a month that it's continued to be a successful fix for you?

Thanks!
 

jaloosk

Premium Member
Joined
Dec 25, 2020
Messages
3
Location
Ontario
The water matrix is on the left side of the dishwasher, if you pull the dishwasher out of the cabinet you can see it going up the side. There are 2 hoses to disconnect the matrix plus a large threaded plug that’s accessible on the inside left of the dishwasher tub. unscrew the plug, remove the drainage hoses then spend the next hour of your life using soap, water and water pressure trying to get all the little bits and pieces out of the nooks and crannies of the matrix. Pay special attention to the float valve at the top of the matrix. It looks like a little black plastic piece inside the matrix (on mine, anyway). I had some rice grains stuck in there and it was the biggest pain to get that out, but eventually I was able to flush it out.

Cleaning the matrix fixed my E24 issues...I haven’t had any problems since. The matrix is the large part on the left side of this diagram (0401).
16493BD8-2B52-4B23-AF28-30FC8C705311.png
 

MMOlsen

Member
Joined
May 11, 2021
Messages
1
Location
New Mexico
WOW!
What worked for me was to pour a cup of white vinegar down the drain for a few minutes, turn on again. Working fine
 

laser1064

Member
Joined
Dec 28, 2022
Messages
1
Location
New Jersey
@jaloosk, or anyone really, can you supply more information about this water matrix? I have a Bosch SHX68E15UC dishwasher doing E24. I've cleaned out the drain hose w/ a shopvac every which way. The only way I can get it to run is to interrupt the start up cycle by opening/closing the door about 40 seconds in as previously discussed.

Where is the water matrix? Is that something that can be replaced, or is cleaning it and praying I got it clean enough my only option? ;) I'm imagining it is on the rear of the washer, so I'd have to pull the unit out. Is that correct?

Do you have any pictures or make shift tutorial on the procedure? I assume since you've been quiet for a month that it's continued to be a successful fix for you?

Thanks!
Interesting. I seemed to have stumbled on the same solution. I know the drain and pump are working and draining properly, but I have to stop the cycle before the fault (opening the door), but I add water into the drain and then everything works fine.
 

Hildebrau

Premium Member
Joined
Jan 26, 2021
Messages
3
Location
Austin, TX
Interesting. I seemed to have stumbled on the same solution. I know the drain and pump are working and draining properly, but I have to stop the cycle before the fault (opening the door), but I add water into the drain and then everything works fine.
I finally fixed mine. This thread had the right answer.

 
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