Question about Dishwashers

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Bosch Dishwasher SMU 2046

There seems to be no power getting to the the the unit. There is power at the junction box, but no lights, no response to pressing the on - off switch, no activity at all. There is no voltage at the on - off switch terminal. It's hard to follow the wiring from the junction box. I've been looking for a wiring diagram. Any thoughts or suggestions?

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  • Bob Stein Oct 20, 2008

    Again, There is power to the junction box. The house wiring is fine. There is no visible evidence of burned or shorted connections. I read no voltage at the on - off switch. The door switch is operating properly. Where does the wire from the junction box go? Is there a wiring diagram that I can look at?

  • Bob Stein Oct 22, 2008

    It turns out the main power feed coming into the dishwasher door in the carefully shielded wire harness had broken through the plastic encasement and shorted. I spliced the wire and that fixed the problem.

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  • Dishwashers Master
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It doesn't work at all If your dishwasher doesn't work at all, check these:

Power from the house Is there power getting to the dishwasher? This can be difficult to test, because dishwashers are usually wired directly to an electrical circuit, rather than plugged into the wall. But at least check for a blown fuse or a tripped circuit breaker.

Door switch The door switch is important because, if it's defective, the dishwasher won't work at all. To reach it, you need to remove the control panel cover, or sometimes the interior liner of the door. If it's defective, you need to completely replace it.

Wiring Often the main wiring connection from the house, at the dishwasher, burns and breaks the connection. If that's the problem, the wires must be repaired/replaced as necessary. If that's not the problem, check the wiring to the door switch, the wiring between the door and the lower part of the dishwasher, and the wiring to the timer. Repair any broken, burned, brittle, or defective wiring, using the proper appliance-grade wire and connectors.

Timer or selector switch Although it's uncommon, the timer or the selector switch may be defective. If so, you need to replace the defective part, because neither of these can be repaired.

Posted on Oct 20, 2008

  • Ekse Oct 20, 2008

    I would gladly give you one if I had one of your bosch. Im afraid as far as I know you will have to go in blind so to say. to find the problem.



    I have emailed a nother expert maybe he has what we are looking for. Il get back to you asap.

  • Ekse Oct 22, 2008

    It sounds like a bad door switch, but the only way to know for sure is to do some electrical testing with a volt/ohm meter and the wiring diagram located within the appliance. If possible use the meter and the wiring diagram to check input/output voltages looking for discrepancies between the diagram and the actual meter readings. Enter your model number into the PartDetective on the Find & Order Parts page to see all the parts available for the unit.

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There must be something wrong with the switch. You need to rewire it from the junction box.

Posted on Oct 20, 2008

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  • Expert
  • 84 Answers

If water is pooling inside of dishwasher even after totaly draining water valve at front left side bottom behind kick plate needs replacing

Posted on Oct 20, 2008

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6ya6ya
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Posted on Jan 02, 2017

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1 Answer

Why does voltage at circuit breaker read 120V and less than one volt at dishwasher junction box?


Say, do you want to play with this?
Could you disconnect the wires at the dishwasher junction box, (remembering exactly where they go) and find an extension cord you could plug in somewhere else to get electricity to the junction box that way? Obviously, you should need to have bare wires to hook to the junction box, so you might be sacrificing an old extension cord, or you might be using romex wire, or something like separate wires. Just be sure you know what you are doing so you don't get ZAPPED. God bless your efforts.

Aug 27, 2015 | Bosch Dishwashers

2 Answers

MY BOSCH DISHWASHER MODEL #SHU43C06UC/17 WILL NOT START. NONE OF THE LIGHTS TURN ON AS IF THERE IS NO POWER GETTING TO IT. I HAVE CHECKED THE POWER CORD AND THE BREAKER BOX AND EVERYTHING IS O.K., BUT I...


Hi gwmkjm,

I'm Harvey the Master Plumber.

Your question is: YOUR BOSCH DISHWASHER MODEL #SHU43C06UC/17 WILL NOT START. NONE OF THE LIGHTS TURN ON AS IF THERE IS NO POWER GETTING TO IT. YOU HAVE CHECKED THE POWER CORD AND THE BREAKER BOX AND EVERYTHING IS O.K., BUT YOU STILL CAN NOT GET IT TO TURN ON. AT ONE TIME THE LED LIGHT LIT UP FOR A BRIEF SECOND, BUT NEVER AGAIN. ANY OTHER SUGGESTION?

Yes. 9 times out of 10 it's a loose or broken wire in the d/w junction box under the d/w behind the kick plate on the right. Make sure to turn off the electric before you expose the wirenuts. Remove them and install new.

Feel free contact me again!
Please give me a rating here at fixya.com before you sign off
Thank you,
Harvey your Master Plumber

Sep 28, 2008 | Bosch Dishwashers

2 Answers

Wash cycle stopped with water in the bottom. Seems like there is no power. Can't get lights on cycles buttons to turn on. Power button does nothing. Checked circuit breakers. All are on. Lights and outlets...


Check the wiring in the units junction box. Its located at the bottom right corner. You will likely find melted connectors. If so, you need to cut the wires back and replace these connectors. Make sure you turn the power off before doing any of this work of course. Good Luck.

Jan 14, 2011 | Bosch 24 in. SHX46A05UC Built-In...

1 Answer

My bosch shu43co5 made a burning smell and stop working in middal of a wash the breaker seems to be fine and trying the power button/ powerscub/ reg wash don't get any lights on. what is my next step in...


Hello,

Welcome to FixYa.

**Before I begin I will inform you B/S/H/ ( Bosch Thermador, Gaggenau ) issued a recall on certain models between 1999 - 2006 depending on the serial number.** Here's the link so you can see for yourself.

http://microsites.boschappliances.com/safetyrecall/dishwasher/

Aside from that and based on your post "my bosch shu43co5 made a burning smell and stop working in middle of a wash the breaker seems to be fine" it may just be a loose/burnt connection in the dishwasher junction box.

**Now I would start by first shutting off the breaker...safety first**

Then removing the kick plate ( access panel at the bottom )...

macmarkus_133.jpg

...and checking the wiring at the junction box for the dishwasher 120vac supply line.

Remove the murret's and visually inspect the wire for "resistance burn" and strip the wires back and install new fastener's if necessary to repair.

i.e.

60f6a31.jpg

This is actually quite common to find a wire connector come loose due to improper fastening and once the unit is in use for a while the connections heat & cool, become loose from normal operating vibrations and burn up from all the added heat caused by "resistance".

Typically this will manifest in just the manner you've described.


Let me know what you find and I'll try to assist you further if necessary. I'd still suggest looking into the possible recall for your machine though.

Regards,

Macmarkus :)

Dec 20, 2010 | Bosch SHU43C05 Stainless Steel Built-in...

1 Answer

My Bosch Dishwasher will not power up


Hi, Welcome to FixYa.

I would start by first shutting off the breaker.

You mentioned you replaced the "receptacles", I'm not sure if you are referring to the junction box but...I would start by removing the kick plate ( access panel at the bottom ) and checking the wiring at the junction box for the dishwasher 120vac supply line.

This is actually quite common to find a wire murret/connector come loose due to improper fastening and once the unit is in use for a while the connections heat & cool, become loose from normal operating vibrations and burn up from all the added heat caused by "resistance".

The end result is no power to the controls. Check it out and post back what you find.

Thanks for visiting "fixya" and please take a moment to rate the solution/suggestion provided here for you.

Good luck.

Macmarkus :)

Jul 28, 2010 | Bosch Dishwashers

2 Answers

Bosch Dishwasher will not power on


I saw my repair man do the following, which you might try...
Open the door and simultaneously press & hold down the power button with the 2 buttons used on your model to "Cancel & Drain." If the unit comes on it now is in self-diagnosis mode. Release the buttons and close the door. The unit should start to fill with water. Press the power button to exit the mode.

Jun 28, 2009 | Bosch 24 in. SHU53 Built-in Dishwasher

1 Answer

Maytag Dishwasher MDBH965AW will not power.


Make sure there's power getting to the dishwasher. Check for a tripped circuit breaker or a blown fuse. Check the wall socket for power. Sometimes the power cord disconnects at the dishwasher (inside the junction box, behind the bottom kick panel), if this is the case, the wiring must be repaired or replace

If the junction box checks out ok, the wall outlet socket is live, replace the main control or timer module.

Jun 19, 2009 | Maytag 24 in. MDBH965AW Built-in...

1 Answer

Our bosch dishwasher is not working, when we press the button to turn on nothing happens, no lights, nothing, we have checked the fuse and thats ok. many thanks gail


you may have to turn off power at main box, and check wires at bottom of machine and any other junction box , from dishwasher to main power box. pull on wires to see if they will come apart.

Oct 30, 2008 | Bosch Dishwashers

1 Answer

Bosch dishwasher


hi there,

just sent the diagram off to you.

please let me know when you get it.

thanks,
c

Oct 07, 2008 | Dishwashers

1 Answer

Bosch Dishwasher Model SMU 2046


First check the screen in the water inlet valve ( you have to take off the lower panel below the door and disconnect the water supply. If that doesn't work or isn't plugged, replace the valve.

Jul 09, 2008 | Dishwashers

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