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dazza

Bosch Dishwasher SGV4313GB/13

27 posts in this topic

Hi All,

Since I have had the water off to the house, our Bosch dishwasher will not fill.

I can do a reset, the washer pump seems to run for a few seconds but it will not fill up and start.

Water is on and door is fully closed.

If I pour a couple of pints into the bottom, do a reset and then close the door, it will start a wash cycle. It then empties but wont re-fill.

Any ideas?

Cheers

Daz.

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Need appliance parts? Call 877-803-7957 now!

It's no clear from your post: is the water to the house turned back on?

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Sorry, yes. water is back on and flows at the connection to the dishwasher when the pipe is removed.

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Ok, so losing water supply to the whole house may be a coincidental, but not a causal, event associated with your dishwasher not filling with water.

Proceeding on that basis, coupled with your report that you have water pressure at the valve, your next step is to test the continuity of the valve coil and, if that checks good, to test for adequate voltage (i.e., 120v ac) going to the valve.

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Ok, the coil measures 8ohms from the connections at the rear of the washer, so continuity is ok there. There is no AC at anytime to open the valve.

I have a meter connected across the terminals and have reset the machine, and turned it on.

The connections are 2 pink wires, one goes to a multi-way block on the RHS of the machine,this must go to the control PCB, whereever that is, the other is on a switch on the LHS, looks like pump switch.

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I'd verify that float switch wasn't jammed closed.

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How can I confirm I'm looking at the float switch?

There is solenoid operated valve which is free moving and a red float which switches the pump on when I lift it up. This red float is difficult to get at.

Cheers

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Ok I've pulled it all apart, the float is free and the solenoid directly under the water inlet is also free.

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Are you getting voltage to the float switch?

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Yes there is voltage on the 2 outer contacts during normal cycle and switches over to the middle contact when I lift the float. (No water in float chamber).

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I won't open your attachment. If you're trying to show a picture, just attach a plain jpg or gif file.

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[user=3426]dazza[/user] wrote:

The part I am testing is 26 3186. I assume this is the float switch?

Correctum. It appears there are two micro switches in this assembly. Can you post the wiring diagram, also?

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Don't have a wiring diagram, just the exploded diagram from the Bosch website.

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Remove the kickplate and look underneath the dishwasher very carefully with a flashlight. You'll find an itty-bitty piece of paper folded up. Unfold, scan in, post. If no scanner, fax it to me at 775-416-4449.

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There's no kickplate as it's a built-in unit. I removed a plate under the door to expose the wiring going inside the door, I've looked underneath, no paper to be seen.

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What's on the paper, wiring diagram or part numbers?

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There is a kickplate.

I know it's built in.

Wiring diagram is there, they all have it.

This is your qualification test, grasshopper. If you can't find the kickplate, much less the wiring diagram, how do you suppose you will effect this repair?

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Can't see a diagram. Can you mark the photo where I should be looking?

Thanks

post-3426-129045086686_thumb.jpg

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They're right there at the front lip. Look, I plucked out your wiring diagram from here...

post-1-12904508669_thumb.jpg

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And I flipped it over and there's your connection diagram...

OK. Get to work!

post-1-129045086695_thumb.jpg

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One of the triacs on the control box PCB (the middle one)has a big hole in it!

Any idea of an equivalent part number to replace this with or will it have to be a new control box?

Thanks

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Good find, post a picture so we can all share in your delight.

If a triac is fried, there's undoubtedly other damage to the board as well. You're better off replacing it. Scroll up and use the "Easy Appliance Parts Lookup Form"

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new control box arrives. Fitted, power on...Nothing.

Opened up new control box, same triac has blown.:yikes::yikes:

£100 down the drain. Back to the drawing board. It's getting very near to the skip now.

Any control unit diagrams?

What's blowing this component?

post-3426-129045086838_thumb.jpg

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