Question about Bosch 24 in. SHU53 Built-in Dishwasher

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I Have a Bosch SHU5312/u11 that is showing 2H on

I have a Bosch SHU5312/u11dish washer that is showing 2H on the display at start up and the dishwasher runs forever unless I do a forced "quit". Is the control module defective? Is it easy to replace?

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Hi,

To answer your first question, in a word Yes. To address the second question, Yes. The control module is easy to replace but the better news is it is also repairable, ( you can make an educated decision when I'm through on whether to replace or repair, that is obviously up to you ) but I'd like to enlighten you if you'll allow on what to look for, and why.

The issue with your Bosch dishwasher likely lye`s within`the electronic timer/control, specifically the heater relay solder joint. ( a faulty flow switch, ntc or heater can also cause this, but not very probable ). This is why it runs forever unless pressing the two buttons for "cancel". It has nothing to do with a "delay". The 2H stands for two hours and is actually the estimated time the unit took to complete it's previous cycle based on data to the control gathered and stored in memory...it is not "actual" time, it never is on Bosch. there are far too many variables to be "actual" time and since it only goes to two hours in the display, that's what is displayed even if it runs for four hours.

To repair your unit It will require you to remove the control from the unit and then remove the control from it`s plastic housing and look for a burnt solder contact on the printed circuit board. This will be one of the pins from the heater relay, hence the unit sit`s at 2H ( because it can`t heat to advance or until canceled ) trying to heat the water.

**Further to this, if you or someone you know is proficient at soldering, a lot of times it can be remedied by simply repairing the solder...although Bosch recommend`s replacing the control and I don`t pretend to speak on there behalf nor do I profess to know better. This is just my experience (it work`s) and my opinion (why buy new if one can repair ?)**

**Please disconnect the power before attempting any service to the dishwasher. If you do not feel comfortable attempting this service, call a local pro, preferably one familiar with Bosch/Thermador/Gaggenau, to service your machine.**

Hope this answer`s your question's, let me know if I can assist you further. Thank`s for visiting "fixya" for your repair inquiries. Please take a moment and rate this solution to it's helpfulness to you and leave a testimony if you're satisfied.

Good luck.

macmarkus :)

Posted on May 01, 2010

  • Jim M Oct 23, 2011

    Thanks for the tip. My Bosch SHU5312UC/12 had what turned out to be this same problem. Soldered 2 terminals that appeared to be burned and it now works right, again. I'm not sure that whatever caused these soints to burn won'[t do it again, but I will know where to look if it does. Thanks, again. Jim M.

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  • Master
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2h is the delay time ive seen a couple of these models do the same and ive had to replace both the control and the touch pad its not hard to replace just very costly try allbrands appliance parts they seem to be cheaper then marone

Posted on Apr 30, 2010

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Posted on Jan 02, 2017

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1 Answer

My gaggenau dishwasher GM 954-110 is not working. when i switch it on the display panel shows 2H.


Hello, welcome to FixYa.

The dishwasher you're speaking of (provided it is indeed a Gaggenau GM954) is built by Bosch as you may or may not know.

To address your concern regarding the 2H in the display actually needs to be done in two parts. I'll start with the basic info associated with the 2H displayed.

This can be simply indicating the previous cycle exceeded a 2 hour wash cycle, not necessarily an error and can be attributed with too cold water entering the dishwasher (below the recommended 120F), a longer than normal drain time (due to partial blockages, kink etc. hence longer time needed to complete the cycle) or inproper water circulation during the cycle.

Aside from these issues, it (2H) can also mean the unit has a heating error and if left long enough will show another error of "1" in the display, extremely long wash times, etc.

**The first thing I'd suggest before attempting any repair is running an additional cycle while making sure the water inlet is hot (120F optimum) and the unit does indeed drain fine.

**A fair indication of proper draining is to start a cycle and once washing begins (2-3 minutes) activate the "cancel" and the unit should adequately drain in the 2 minute time allowance.

**To identify proper water circulation, place an empty cup in the upright position in the top rack, start a cycle and inspect the cup after 2-3 minutes and it should be full of water.

After trying and posting the results of these thing's we can move forward with potential heating errors, the cause, and how to remedy them. Let me know what you find and I'll continue to assist you in any manner possible going forward. Good luck.

Regards,

Macmarkus :)

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My bosch dishwasher control panel displays 0H on the time delay. When I start it the OH go to 2H. It then starts running and does not stop. The cycle minutes don't display. It's model number SHU5302UC...


check to see if your unit has a recall on it because if it does you will get a free control module from bosch.
your problem is the control module. thermador .com is the site to lookup. gaggenau,bosch,thermador they are the same ccompany. let me know if this helps by sending a 4 thumbs up post

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44b4ffc3-8968-4b98-974c-3f089b887b96.jpg

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The "2H" is an error code indicating the control panel needs to be replaced.

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