Question about Whirlpool 24 in. DU900PCD Built-in Dishwasher

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Solution for "how do you determine if the pump is working versus the water valve needing replaced"

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Make sure the water is turned on to the machine.
Set the machine to start the cycle. Put a volt meter on the water valve terminals. At the fill portion of the cycle you will read 120 volts at these terminals. If you read 120 volts and no fill, the water valve is bad. If you do not read 120 volts, the timer is bad.
Fill the tub with water using a pot. Set the machine at the pump out cycle. If it pumps out, the pump is good.
If it does not pump out it could be a bad pump or bad timer.

Posted on May 26, 2009

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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Whirlpool ice maker will not fill with water


1st check to see if fill tube is frozen that goes through back freezer wall to feed water to ice maker. If it is, thaw it and replace water valve. If not frozen, then you must determine if water valve or ice maker is bad. You must determine if Ice maker is sending voltage to valve. If it is, replace valve. If it's not, replace ice maker.

Sep 03, 2017 | Whirlpool Refrigerators

Tip

Ventilate error -


The following procedure works when you get the ventilate error:



The Ventilate sign can be due to one or more of the following reasons:
Cause 1- Water leaking from the inlet valve below the water tank. The hose from the inlet valve to the pump can be air locked. When using the hand pump, do not thrust its nozzle too deep
Cause 2- Blockage in the passage of water due to clogged passage anywhere between the pump and espresso delivery nozzle.
Cause 3- Pump is not working. Open steam/water outlet knob and hear the pump work. If you do not hear any noise from the pump, this may be the main cause.
Cause 4- Flow meter is faulty. This part is like the water meter for homes. It measures the flow of water and signals the electronic board. The malfunctioning flow meter will not send signals even when water is flowing through it.
Cause 5- Hose is disconnected and water is not flowing in the system.
Cause 6- O-rings at hose connection is leaking, reducing the water flow to be sensed by flow meter.
Cause 7- Boiler gasket is leaking. Reduces flow of water through the system.
Cause 9- Brew unit is blocked, blocking flow of water through the flow meter. This also causes pump to slow down and ultimately stop with muffled sound within 15 seconds.
Cause 10- Brew unit not connecting brew valve, preventing flow of water. Same sign under cause 9.
Cause 11- Steam is leaking. Registers reduced flow of water at the flow meter.
Cause 12- Solenoid valve is blocked or solenoid coil is bad. Same observation as cause 9.
Cause 13- Electronic Control board is bad. Though rare it can happen due to condensed water from leaking steam. When steam is leaking or boiler is leaking, machine should not be used any more to prevent steam shorting the Electronic board.
Some of the above causes can be checked and corrected before seeking technical help. Do not assume anything without physically checking each of the following:
1- Make sure the water tank is full. If the water tank has water level float, make sure the float is in its housing and it floats as water is filled in the tank. If the level float does not rise with the level of water, then replace the float.
2- Water is not leaking from below the tank. The inlet valve is good. If leakage is present, replace the gasket in the water inlet valve.
3- Prime the machine by opening the hot water knob for 20 seconds or pressing the hot water button. Hot water flow shows the boiler is not blocked with minerals and pump is good. The solenoid valve is good.
4- Water & steam flowing normal, check the brew group for blockage. Determine when was the last time brew group was cleaned. Clean the brew group as explained elsewhere on these pages. If the machine has pre-ground function, try making a fake espresso (without coffee). Make regular espresso in other models to make sure that water goes through brew group and espresso is dispensed.
4- If hot water does not flow because the pump is not activated, then pump is bad. Replace pump.
5- Pump starts to work but within few seconds its sound is muffled and finally stop. This indicates there is serious blockage in the water line or the boiler is clogged with mineral deposits. If water is leaking and seen on the counter top, the chances are that water is leaking from hose connections(replace O-rings) or the boiler is leaking from seams (replace boiler).
6- Prime the machine by opening steam outlet for 20 seconds. Steam flow shows that steam boiler / steam outlet is not blocked. If the steam does not flow, then steam boiler or steam passage is blocked. Replace steam boiler or steam valve
7- Check the solenoid valves to make sure that they open & close as the coil is energized. Solenoid valve is located between the pump and boiler. The pump is activated simultaneously as the solenoid valve when espresso selection button is pressed. Some models may have a solenoid valve near the steam valve. In these models, the solenoid valve is activated to allow passage for steam/hot water. If the valve is not functioning, the ventilate sign will appear.
7- Hear the pump work when priming the machine. Louder noise from the pump can be due to
** air-locked water hose, or
** water is not sucked from the tank or the pump is sucking air instead of water or
** the diaphragm inside the pump has lost flexibility and not developing pressure to push water forward
** the hydraulic system is blocked at one or more locations due to mineral sediment. Find the location and cause of the block and correct it.
** Clean the brew unit (see cleaning instructions) and make sure that
a- the ground coffee used is not powdery fine.
b- The dose of coffee grounds is not in excess specification
c- check if there is blockage. Find the cause and remove it.
8- If steam and hot water flow is normal, but the ventilate sign persists, then the flow meter or the electronic control board is bad. Replace flow meter or the control board, as necessary.

Try also the following:

  • Press hot water button once. Message on the screen will not change, this is normal.
  • Open the steam knob and allow the water to flow freely from steam wand into a cup. The screen should now read "Hot water,ventilate", you may need yo empty several cups of water before message changes. In some case it is necessary to refill the machine container without interrupting the operation.
  • As soon as the screen displays "hot water," turn the steam valve off .
  • If the machine warms up again, then problem is fixed.

on Jan 21, 2011 | Saeco Magic Comfort Plus Espresso Machine

1 Answer

Creda 1000 superspeed fills with water overnight


Sounds like the valve that shuts off the water inlet is letting by. It could have something trapped in there, but I would have thought that would flush out when filling at full flow when in use, so I would suspect it is worn and just not sealing properly or the solenoid is faulty.
You have 2 options:
  • Replace the valve/solenoid......at a cost
  • Isolate the water when not in use.....for free
Simply closing the isolating valve at the end of your hose is the easiest and cheapest option as long as it is easily accessible. Replacing the valve may well need an expert due to its' location and how it is fitted. If an older machine it may not be readily available or cheap or even worth the expense versus the cost of a new machine.
Best bet is to isolate the water until you decide where to go next.
Good luck and I hope that is of some help.

Feb 10, 2016 | Creda Washing Machines

1 Answer

Working pressure


Putting 60 lbs. of pressure in the pressure tank is not the answer.

First determine that the pump is working correctly, Open the drain valve and see if you get a good flow of water. If you do then OK, the pump is working. If you are not getting a good water flow from the drain valve, then the pump is not operating correctly - maybe a bad foot valve. Next open the drain valve and watch the water pressure gauge, and note at what pressure the pump kicks on ( that's the cut-in pressure), and when it kicks off ( that's the cut-out pressure). Most pumps are set to operate at 20-40 psi, or 30-50 psi. The cut-in and cut-out pressure is set by the water pressure switch.The pressure in the water tank has to be set 2 psi BELOW the cut-in pressure of the pump. That is, if the pump has a 20-40 psi differential, then the tank has to be pre-charged to 18 psi.

To pre- charge the pressure tank , the pump has to be shut off. The Tank needs to be emptied (drained ) of water. The air pressure is then set to 2 psi BELOW the cut-in pressure. If water escapes from the air valve, the bladder in the tank is ruptured, and a new tank needs to be installed.

So, first make sure the pump is working.
I WOULD RELIEVE MOST OF THE PRESSURE IN THE PRESSURE TANK TO ABOUT 20 PSI BEFORE CHECKING THE PUMP, AND PRCEEDING WITH THE PRE-CHARGE OF THE TANK.

May 24, 2014 | Plumbing

1 Answer

Water keeps running in the ice maker I replaced the pump and is still doing it


It sounds like your electronic water valve is just stuck open and will need to be replaced, or you could have an icemaker stuck in the fill mode calling for water all the time.
The best way to determine which part is faulty is to just remove the screws mounting the icemaker and then disconnect the wire connection to the icemaker. Turn the water back on and if water still keeps coming in, then you need a new electronic water valve, otherwise just replace the icemaker itself.

Sep 06, 2013 | GE Refrigerator Automatic Ice Maker IM6

1 Answer

Already replaced the water pump in my 2003 Mazda mpv but my car is still overheating what could be the problem?


How hot did you run it before you replaced the water pump did you replace the thermostat also. If you ran it reline, blew your hoses, etc... you can have cracked head, warped head, cracked engine block.

Keep in mind rule of thumb if you replace the water pump you have to replace the thermostat also. REMOVE the thermostat and see if it is still over heating.....Even if you did replace it the one you got could have been bad.

I have the same vehicle in yard going to start tearing down tomorrow to check for issues.

If you can give me a better description of symptoms I can assist you in narrowing down the problem a little better the more info your provide the better to make a determination as to the steps you need to take to repair.

First is there water in your oil, second is there a thin film of oil in your water??
Again when the motor is running and up to normal temperature before it overheats is the engine pushing water out of of the over flow canister? If so this is a direct indication of blown head gaskets, or warped head/heads, or cracked head/heads from excessive over heating. It could become a very costly venture. Check for cost of repair versus ordering an engine, heads , etc... from www.usedengines.com. They have a very wide range of all types makes, models, etc.... and engine components and parts available for shipping.

Wicked Angel

Nov 17, 2010 | 2003 Mazda MPV

1 Answer

Pump wont stop


The following are the possible problems and solutions:
  1. The tank flapper (Flush Valve) leaking allowing water into bowl. Make sure flapper is fully seated. If flapper is fully seated and still is leaking replace flapper.
  2. Faulty Non-Return Check Valve, water leaking back into Macerator. Clean and Inspect check valve replace if after clean water still flows back into Macerator.
  3. Check micro switch, the micro switch turns on pump when the water level reaches to a determined level. Location of switch is in the pressure chamber. Check to see if switch is sticking. Note: For safety Macerator should never be operated with lid open
I hope this answers your question and gives you a few more places to look. Please rate the answer on it's helpfulness. Good Luck and have a great day. Jeff

Mar 27, 2010 | Saniflo & Saniplus& Macerator Pump

1 Answer

Dishwasher makes grinding noise during wash cycle (after pre-wash). noise persists for 15-20 minutes. It seems as though the inlet valve doesn't open during this phase of the cycle. adding water to the...


Water-inlet valve Most cleaning problems are caused by the dishwasher not getting enough wash water, so the water-inlet valve is often to blame. This valve is usually at the bottom left or right of the dishwasher, behind the lower access panel. It's the device with the main water line from the house, a rubber tube to the dishwasher, and two wires attached to it. When a water-inlet valve is defective, you may hear the sound that's usually referred to as "water hammer." If the water-inlet valve is defective, you need to completely replace it. Dishwasher Water Inlet Valve Replacement

Be sure to read and understand any instructions that come with the new water inlet valve.

Nov 19, 2009 | KitchenAid Dishwashers

1 Answer

Water won't drain from bottom of dishwasher. I pulled the dishwasher out, blew through the drain tube, disconnected the drain tube and felt around inside. Ok there. The dishwasher has not been in use for 4...


Sorry to hear that you are having problems with your DW.

Actually, yes. Not using a dishwasher for a while can damage some parts. Sediment from water damages the water valve. Food residues clogs the drain and drain pump. More likely the drain pump needs to be replaced.

Per your notes, looks like you are a handy main, so you may want to remove the pump to determine if it is clogged. (Quite dirty job). The drain pump is easy to locate, just follow the drain hose.

Also, check the connection with the food disposer under the sink.

Nov 15, 2009 | Dishwashers

1 Answer

My machine seems to be blowing bubbles in the


Hi
Sounds like you need a new pump. The internal check valves are stuck. I have seen them on ebay. Ulka EX5 is a good substitute.

Oct 19, 2009 | FrancisFrancis! X5 Espresso Machine

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