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Smeg Allegra NZL750 drains water after wash but then it fills up bottom with water

Recently our Smeg Allegra NZL705 have been filling the bottom of the machine with water after it managed to drain it all after a wash cycle. I took the dishes out after the machine has finished and everything looked fine. The next day the bottom of the machine was filled with water (that looks clean). I left the machine turned on... could that be the problem? The basket is clean... could it be blocked somewhere else? What can I do?


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  • 25 Answers

SOURCE: smeg DI 612CA

Take a look at this link

Would seem to be the anti flooding device on the inlet hose

Posted on May 08, 2008

  • 19396 Answers

SOURCE: Machine won't drain fully

If the drain pump is working fine, and water flows from the machine and there are no clogged drain lines, then the problem is usually the water level sensor.

This is usually a floater sensor located on a side inside the dishwasher.

Check if water level is working properly, if the floater is too low then that is the problem.

Posted on Apr 07, 2009

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  • 1653 Answers

SOURCE: no water filling dishwasher after paper napkin got

First turn off the mains power to the dishwasher then check the internal filter and screen and clean it thoroughly. Then check the waste water hose and any outlet valve and make sure that it is unblocked and free of any obstruction or waste material. If you have access to the water pump you can check that it is free of obstruction and is able to turn and that none of the impeller vanes have been damaged. Then if all this is OK then try turning on the mains power and running a hot wash cleaning cycle to flush out any remaining sludge / debris. If this fails and no water is entering the machine then the most likely cause of the problem will be a defective water inlet valve or logic controller board and both will need checking and / or replacing by a service engineer. In this case it is most likely that the water inlet valve has become defective and will need replacing. This is quite a common fault with dishwashers and washing machines and is a relatively simple and cheap repair.

Posted on Sep 24, 2009

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Now, the water at the bottom of the dishwasher, if the drain isn't connected up under is the sink drain and trap area or the garbage disposable in the sink. but some place lower on the drain pipe. You will not have a spiffing effect on the the bottom of the dishwasher, it the same with washing machines. One the discharge pump starts sucking air, it will not drain the dishwasher. The siffen effect works if the water is below the outlet for the drain. Example: Home owner have the new washing running and continue fill with water. Why, because the drain pipe end is below the the bottom of the washing machine tub. It fill up with water and siffen action continues emptying the tube will it still filling. One heck of a water bill.


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1 Answer

SMEG Dishwasher - Water fill level is too low

Hi, I found your problem stuck here from one year ago.

I will post my solution the same, as reference for you and more users with same problem, apologies.

Re: smeg dishwasher fails to fill with enough water to sucessfully wash. It does put some water in.. but nowhere near enough.

Before checking parts inside the machine, ensure that water is coming from the faucet at the back with regular pressure.

To start check the water level sensor.

This is usually a floater sensor located on a side inside the dishwasher.

Check if water level is working properly, if the floater is getting stuck then that is the problem.

If the water level is OK, then the responsible is usually the inlet valve, or clogged inlet lines.

From description it looks more like a faulty water level.

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Smeg DI 612CA

Take a look at this link

Would seem to be the anti flooding device on the inlet hose

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