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Bosch dishwasher Low circulation water pump pressure

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Re: Bosch dishwasher - Dishwashers

Pump is going out.

Posted on Dec 20, 2007

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I dont ave hot water in my dish washer

These have a instant water heater or circulation pump with in built heater. It could be the relay on the control module burnt out. Either that or possible water pressure / level issue's or pressure switch issue.

Apr 07, 2014 | Bosch 24 in. SHU43 Built-in Dishwasher

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What does it mean when F 14 is displayed in the window?

F14 - "level/pressure switch failure." The level switch monitors the dishwasher's water pressure, as it circulates, which is especially critical, during the heating cycle (main wash). Level switch failure can commonly happen from poor circulation, or from the defective level switch, itself. The most common reason for poor circulation is low water fill level. In other words, during the water intake cycle, insufficient water came into the dishwasher. Observe if enough water did come into the dishwasher, Check the water level, by using the filter's handle (located on the floor, of the inside of the dishwasher) as a reference point. At the end of the water fill stage, the water level should be just underneath the filter's handle. If the water level is more than half an inch, below the filter's handle... then that could be a problem. The sympton would be a noisy, sluggish, whooshing sound of water, during circulation - It wouldn't be the same old quiet Miele dishwasher you knew.

If you have the low water fill problem, then look at the dishwasher's water intake hose. Miele call this their Waterproof System hose (WPS). It's a water hose with an integrated electric valve. First, shut your water valve that connects to this WPS; disconnect the WPS from your valve; look inside the end of the WPS. With a needle nose plier, remove the rubber seal, filter and the water restrictor; clean them of any possible debris; put all the parts back into the WPS, securely; reconnect the hose; open your water valve; and test the dishwasher. If the problem persists, then the WPS will need to be replaced (WPS~$170).

Other causes for F14, can be weak circulation from foreign item(s) (plastic wrapping, broken glass, etc,...) lodged inside circulation pump impeller, or no circulation, at all (circulation pump stuck). Of couse, the defective level switch, itself, can cause the F14, too. The least common causes for the F14 can be broken wires to and from, level switch and electronic unit, and a defective electronic unit.

Oct 18, 2010 | Miele Premier-Plus Built-in Dishwasher

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F14 is presenting after completing 75% of cycle, then the machine stops, this happens on all cycles

Hi dear.Please follow this if you can do it,other wise call service department.I hope that solves your problem.Thanks. F14
Water intake fault: Heater pressure switch
Heater pressure switch B1/13 defective.
1. Check the heater pressure switch.
2. Check the connection plug and wiring harness.
3. Replace the heater pressure switch, if necessary.
Circulation pump inoperative. Circulation pressure too low (no pressure at
heater pressure switch). Pump may be blocked by foreign objects.
1. Check the circulation pump for foreign objects.
2. Check the circulation pump capacitor.

Aug 18, 2010 | Miele Premier-Plus Built-in Dishwasher

1 Answer

Apparently no water pressure to upper washing arm.

Hi sounds like there is a blockage in the circulation pump which causes low water pressure as it cannot push the water around. You would have to remove the unit and turn on it's side and remove the circulation pump to clear the blockage.

Also check all the holes in your spray arms for any blockages. Best to remove each arm and clean in the sink. Any blockages causes the arms not to turn.

Jan 24, 2010 | Frigidaire Dishwashers

1 Answer

Dishwasher does not circulate water

I had a similar issue and it was the Motor Circulation Pump. Part #239144 @ Marcone Appliance Parts Center (860) 548-0080

Feb 01, 2009 | Bosch SHU5315UC Dishwasher

2 Answers

Bosch shu3036 upper arm with low pressure

check water level should just appear above filter failing that a common fault on these is the impellor wings have worn you need to strip wash motor down to get impellor cover off

Jan 07, 2008 | Bosch 24 in. SHU43 Built-in Dishwasher

2 Answers

Bosch SHU43C02UC/47

How to loose up the circulation pump

Oct 22, 2007 | Bosch 24 in. SHU43 Built-in Dishwasher

2 Answers

Bosch SHX46A dishwasher

I have a Bosch SHX46B05UC/14 and it stopped functioning right. It filled, it ran, it drained, it sounded okay, but I finally determined there wasn't enough circulation pump pressure to swing the spray arms. Turns out the problem was a pump pressure adjustment screw, accessible under the kick plate, had backed off--now if I can only figure out how to set it properly, low enough to clean the glassware, high enough not to break the pots and pans--or is it the other way around. I also found some beans in the drain sump (easy to remove cover plate from inside with a torx driver, large object trap not locked down properly and a riser for the upper spray arms not press fit sufficiently into pump outlet (I wonder if I blew the line while setting pump pressure. I AM looking for guidance on how to properly set the pump pressure, for the moment, I simply turned it into its spring loaded range and cranked it down a few turns.

Oct 04, 2007 | Bosch 24 in. SHU66C02 / SHU66C06 Built-in...

1 Answer

Bosch Dishwasher

the spray arms are rotated by water coming out of angled jets, this water being forced round by the main circulating pump. suspect it may a fault with this pump

Mar 23, 2007 | Bosch 24 in. SHX99A15UC Stainless Steel...

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