Question about Asko 24 in. D3250 Built-in Dishwasher

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Asko dishwasher 1475 indicates high water level

Hello, all of the lights are on showing a problem and not allowing the machine to work. I've recently installed this used dishwasher which worked perfectly well in a friend's home. The manual says the lights indicate 'high water level in the machine' and mentions an overfill protection on it but doesn't say what to do other than 'call for service'. Thank you!

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  • Jim R Nov 14, 2007

    About a year ago, I had the same problem which was solved by propping up the drain hose along the top of the machine.

    Now the machine is giving the same symptoms that doesn't seem to be caused by the drain hose.

    1. Start any program. The machine goes into pump out mode for an
    appropriate period of time, then runs the fill cycle to start water
    into the machine as is normal.

    2. When the water has finished filling, the next step where the water
    starts to circulate through the machine to wash the dishes starts, and
    an appropriate amount of water exists in the machine.

    3. Soon, (any where from almost immediately to a couple minutes),
    after this circulation portion of the program starts, the machine will
    flash all indicators as if "high water" and immediately begins pumping
    the water out of the machine.

    If the door of the machine is opened during circulation, the machine
    will stop washing as it should, but upon closing the door, instead of
    resuming the circulation portion of any program selected, (no matter
    which one is chosen, (any program that causes washing action) the
    machine immediately indicates the "high water" problem, all indicators
    flash and it begins pumping the water out of the machine.

    In either case, (door opened and re closed or all by itself) the
    machine will pump out the water to a very low level and continue to
    run the drain pump regardless of whether the door is open or closed.
    This pumping continues even after the water has been sucked out so low
    that it requires a turkey baster to get any more water out of the

    Even if after a period of over five minutes, the pump continues to
    run. Turning off the circuit breaker and waiting a couple of minutes
    does not help. Re applying the power only starts the same condition.
    All indicator lights are flashing and the drain pump running with the
    door open or closed.

    If the dishwasher quit pumping and is in normal standby mode, turning
    the circuit breaker off for a couple minutes and back on again will
    start the drain pump and the "high water" all indicators condition

    Rapidly opening and closing the door of the machine eventually stops
    the pump and all indicators come on steady as in "finished" mode. A
    simple press of the heater button cancels all lights and restores the
    machine to standby.

    I am wondering if this unit needs a new control board.

    I also wonder how exactly the "high water" is detected and where any sensor is located.

    If the machine is put into "diagnostic" mode, all functions can be operated correctly as described in the diagnostic mode.

    There appears to be no problems when using diagnostics. Door switch operates correctly by suspending and resuming diagnostics without the drain pump staying on.

    Any ideas other than a new control board?

    I am in Calgary, Alberta, Canada.

    I was quoted $980.00 for the control board, $95.00 for a service call and $60.00 per hour installation.

    While the machine has lasted me from Feb of 1996 to October 2007, I cant see spending this kind of money on it or buying another ASKO dishwasher if parts are costing this kind of cash.

    Thanks for reading this


  • richard62321 Feb 16, 2009

    I'm not sure of the model of my machine, but I found a circuit diagram that was printed in 1991 - I have no manual. The washer started leaking everywhere - I managed to clear a blockage in the hose that goes to the water level sensor - the washer no longer overflows, but now it contantly goes into high water level warning and won't finish a cycle - does it just need resetting or is something else wrong?

  • Anonymous Mar 14, 2014

    Asko 1385 just ceased functioning. No flashing lights or errors codes (no display board for errors). Door seems to make a solid connection and "click" still with the safety catch, but there is no satisfying whoosh of water from jets. No hums or buzzs indicating a bigger mechanical issue either. Where to start?

    Worked fine last week with no indicators of impending failure either. Assuming a control switch/latch failure at this time and will start dis-assembly in that direction; anything else I should check from the start?



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The "High Water Level" in the machine can be triggered not only by the Styrofoam operated switch in the safety tray under the machine's tub, but also by the Overfill Pressure Switch pictured here

My previous post describes the erratic behavior this switch can cause. It seemed almost at random, the "High Water Level" condition would occur in whatever cycle I used.

Asko dishwasher 1475 indicates high water level - 0643b5b.jpg

It is easily located at the end of a small rubber hose visible when the kick panel and service covers are removed. Look just above where the electrical power terminal block is. The switch is held in place by the clip protruding from the top (as shown in the picture above). The sides of the clip need to be pressed towards the center to release the switch. I simply rotated the switch until the clip was turned to the longer side of the rectangular hole it clips in to. It then just fell out.

This pressure switch triggers the drain pump when too much water enters the machine, but it can malfunction and will keep the drain pump running "forever" until you turn off the breaker. Unfortunately, until the problem is rectified, the dishwasher "remembers" what it was doing when you disconnected the power and when you re apply power, the drain pump will again start draining your already empty dishwasher.

I pulled the connectors attached to the spade terminals on the switch back a bit and then forward as far as they would go ensuring all the wires had continuity from the terminal to the opposite end of the wire it was attached to. When I re applied the power, the empty dry dishwasher attempted to start up where it left off in the cycle it was on, but the "High Water Level" conditioned cleared. Pressing and holding the single button opposite the light left on canceled the cycle and the machine went into standby as it should.

I hope this helps someone else. Until I "Googled" the part number printed on the switch, I didn't know what triggered the "overfill" or "High Water Level" condition.

Part number on the part was 8058475. I also found out the small hose attached is part number 8058500. The small hose is not as readily available as the pressure switch, so extra care should be used when handling it.

Posted on Dec 03, 2007

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I've got an Asko 3450 that was giving high-water error and running the pump to try to empty the machine despite the water being long gone. It would run perhaps half a wash-cycle before failing. Based on the info here, I yanked out the pressure sensor and tried blowing/sucking on the inlet of the switch to see if it was leaking. It wasn't, but I could not ascertain if it was functioning properly either. So I fired up the machine without the sensor's wiring connected, and the machine works! Clearly the over-water safety will not kick-in, but I'm not too worried about that. It's never been a problem before, and the leak-detection system with the little styrofoam float thingee is still working in the event of a major leak. I'd replace it, but the part is listing online for $90 or more.

Posted on May 03, 2014

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I have had this problem twice. The small rubber hose that connects to the bottom of the orange coloured high water level switch can get water in it. When this happens, the overflow switch becomes erratic, causing the machine to behave in mysterious ways. Turn the breaker off to the machine. Remove the kick panel and cover panel. Gently pull the rubber hose off the bottom of the switch. You may hear a sucking noise as the hose is removed. Shake the hose to remove any water. It may only take 2 or 3 drops of water in the hose to cause this problem. Carefully replace the hose onto the switch. Power up and enjoy a normally working dishwasher!

Posted on May 20, 2013

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Problem: 'F2' reading on the dial after a backflow into the machine due to a blockage in the outlet sink to which the machine is connected. Solution:Turn off the power and unplug. Turn off and disconnect the water. Remove al dishes and racks inside the machine. Pull the machine out. Place towels at the back of the machine and tilt it back gently until water flows out the back of the machine, continue until flow stops. There is an overflow tray in the machine with a cutout switch and the draining of the water in the tray will mean the cutout is no longer operating. Re-connect power, water inlet and outlet. Turn on the machine and it should function normally

Posted on Jun 27, 2010

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Hi We have an Asko D3250 when we start the dishwasher it pumps the remaining water out - fills again and stops. It gives me a error message of high water but no solution. 
Any idea what's up ?

Posted on Jun 19, 2009

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This could be any # of things.Is the drain hose routed in a loop up to the top of the back of the unit? This is very important in askos. When the unit drrains at the end of a cycle, how much water is left in the bottom? If it is high enough to nearly touch the silver filter screen, then you have a drain that is returning water back into the machine and you must put a check valve on the outlet of the discharge hose, or route it properly. Star a cycle with no water present i the machine, wet vac it out if you have to. Let the machine fill untill it starts running the wash pump. open the door and see where the water level is. it should be level with thetop of the grey plastic part that the lower wash arm sits on. if its too high then you need to restict the water at the shut off valve, or find the instructions on how to get into diagnostic mode and turn down the water level. good Luck!

Posted on Nov 06, 2007

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