Question about Whirlpool 24 in. ADG7540 Built-in Dishwasher

8 Answers

Adg7540 drains for aprox 15 secs then makes strange noise

After starting a programme,seems to drainn for a short time then you can hear water entering lerft side. this then stops and a stange humming comes form bottom right.

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  • markbr74 Jan 19, 2009

    I have now noticed that after hearing it drain then the water coming in,the small humming is coming from the pump i think,this stayed on for a while so i opened the door and there was water in the bottom.I have checked everywhere i can think for blockages.

  • markbr74 Jan 19, 2009

    no leaks, no broken impellor, it sounds more like something is trying to start but can't ?

  • markbr74 Jan 19, 2009

    sorry, to be adding bits but i have just found that if i give the machine a shake i, it seems to jump back to life and water starts to spray. Would this suggest a faulty pump? or is there a chance it could be something else? Thanks

  • markbr74 Jan 19, 2009

    adg7540, no flashes, starts fine with drain,then fills with water. next humm starts,if i shake machine water starts to spray intermittently whilst humming stops and starts.programme runs full diatance.

  • markbr74 Jan 19, 2009

    was hoping for a way to eliminate other possibilities

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8 Answers

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If you shake the machine and it restarts working, then it is a foreign object obstructing either the impeller pump or the drain pump.

You need to free the lines to pump and drain pump to unclog them.

Enter model number here to get diagrams and locate parts.


Posted on Jan 20, 2009

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There is something stuck inside pump!

Posted on Jan 19, 2009

  • Alvaro Domingues
    Alvaro Domingues Jan 19, 2009

    there is something stuck inside pump!

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So this is not draining completely?

Posted on Jan 19, 2009

  • James Bradburn
    James Bradburn Jan 19, 2009

    Does it recycle the water in wash cycle? If so then theres a clog other wise, could be faulty pump.

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Check the float It may be sticking or the float switch may be bad or going bad. The Anti flood device may be activating caused by a small leak check that all hoses are connected tight. Make sure first the door latch is not coming loose during the cycle before checking the other problem areas. Hope this helps. Please let me know what you try so I can help you if one of these is not the problem. GOOD LUCK.

Posted on Jan 19, 2009

  • Samuel Spell
    Samuel Spell Jan 19, 2009

    Float was sticking as I said.

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There very well might be a partical clog in drain hose! Remove hose and clean with a thin wire brush or hanger!

Posted on Jan 19, 2009

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Check the following link, it might help you disassemble the machine.Problem can be solved hopefully.Good luck

click here for internal diagrams

Posted on Jan 19, 2009

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a plastic corrugated drain hose on there dishwashers. These hoses have been trouble for leaking!!. Where the drain hose makes a bend it seems to get weak and splits = water on the floor. If you have a leaking water problem, especially if the dishwasher still leaks when the dishwasher is not in use complaint...check for a cracked drain hose.
Some leaking around-under-from the door on dishwashers can be traced back to a split in the spray arm. If the lower spray arm develops a split in it, the spray arm can turn too fast, and shoot water directly at things that it is not suppose to spray water at....sprays water at the door vents or edges and can create water leaks.
Many times a complaint of noises ( grinding or scraping ) can be traced to a cracked impeller in many of the common motor and pump assemblies used today. Sometimes a poor washing complaint is common after this wash impeller has cracked. Remove power first before investigating.
http://www.applianceaid.com/impeller.html

Posted on Jan 19, 2009

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If your dishwasher seems noisy, check these:

Water-inlet valve
Motor
Heater fan
Pump
Water-inlet valve An aging water-inlet valve can sometimes fail slowly, rather than all at once. It can shudder on and off rapidly, causing the incoming water lines to shake, rumble, and rattle--sometimes violently. If yours is doing this, replace the inlet valve. 

Motor If it's the motor that's noisy, either of these may be the "culprit:"

  • As motor bearings wear out, they can become quite loud when the motor runs. They wear out quickly if they frequently get wet, because the water washes away the motor bearing grease. Bearings can get wet if the spin seal is defective. Then there will also be water leaking onto the floor beneath the dishwasher. Replace the seal if it leaks (read about the main tub seal in the "It leaks" section, later).


  • If, from beneath the dishwasher, you can see a round, plastic disc that's mounted to the top of the motor (a "slinger"), it may have broken free of the motor shaft. If so, it could be rattling around the shaft while the motor is running. If that's the problem, you need to replace the motor.


Heater fan If the heater fan bearings are rusted or worn, they may squeal, or scrape loudly during the drying cycle. If this is the problem, replace the fan motor. Alternatively, the fan blade may be loose. If so, you need to replace it.

Pump Small fruit pits, toothpicks, and fragments of glass sometimes get stuck in the pump. When this happens, open the pump and remove the debris. The pump is usually mounted directly to the motor, then attached to the bottom of the dishwasher. 

To get to the pump, you usually need to remove the lower rack, the spray arms, and the spray arm support from the inside of your dishwasher. A dishwasher pump isn't obvious. Look for an impeller--a round, plastic fan blade-type device that spins around and pushes the water toward the drain. When you can see the drain impeller, you should be able to see the clogging debris.

Posted on Jan 19, 2009

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