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Dishwasher won't start error E4

My dishwasher won't fill properly. Checked line pressure, (it is 42 PSI), replaced fill sensor (back R. corner), checked screens on supply line (clear) still doesn't fill properly (doesn't even come up to the sensor level) and gives me an E4 with the "wrench" symbol. Any suggestions?

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  • bigdogal
    bigdogal Nov 10, 2012

    Also the drain valves seems fine as there is no leakage during the fill cycle.

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6 Suggested Answers

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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  • 41 Answers

SOURCE: Hobart LXiH preesure gauge is to low - 7 PSI

adjust your prv if you screw it in all the way replace it . make sure your new one has a bypass built in

Posted on Dec 07, 2008

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  • 10865 Answers

SOURCE: only wants to fill

There are two possible reasons for the situation as you describe it: 1. Water-inlet valve The water-inlet valve lets water enter the machine. If this valve is defective, you need to completely replace it. It's usually located behind the lower access panel on the left or right side. It's the device with the main water line (usually copper) from the house, a rubber tube to the dishwasher, and two wires attached to it.
2. Float switch The float switch is a small electrical switch that's located right below the dishwasher "floor." Above the switch, on the inside of the dishwasher, is a plastic cylinder that floats up as water fills the dishwasher. If this switch is defective, or if the plastic float gets caught or trapped in the raised position, the water can't enter the dishwasher. If the float switch is defective, you need to replace it.

If you are mechanically inclined you can repair either of these but if you are not you will have to hire it done. Now that you know it is one of two problems you can tell the repairman ahead of time and get a price on the repair. Then shop around for the best price.

Posted on May 08, 2009

whytfang
  • 170 Answers

SOURCE: E4 error after attempting to fill and get to temp

This is what I found for the E4 code...hope this helps...and thanks for rating my effort...The Fang.


Machine won't fill or won't fill high enough(LX18, LX30 display shows "E0," "E2," "E3," or "E4")

1.Low water pressure — check for clogged hose strainer; check that site water pressure meets minimum flow pressures.
2.Make sure probes are clean.
3.No water pressure — main water supply valves may not be working.
4.Drain valve open - turn machine off to drain machine, then on. Repeat twice (this assists in clearing any drain valve obstructions). Wait for machine to reach READY mode and press WASH. Slowly open door several seconds later and note water level. Close door; 30 seconds later, open door slowly and check that water level is the same as it was. If not, repeat the
OFF-ON procedure.
5. Delime machine.

Posted on May 19, 2009

  • 109 Answers

SOURCE: E-2 Error on LX30 Hobart Dishwasher

E-2 error is a fill problem. Water did not reach the lower probe within the time out. (innitial fill only
1- Is the bottom probe clean?
2- No fill water (check valve, hose,fill screen in end of hose, and fill source.)
3- low water pressure, should be 20 PSI flow.
4- Fuse 1FU blown.
5- Check wiring to fill valve.
6- Check relay board function.

Posted on Aug 08, 2009

  • 109 Answers

SOURCE: Hobart dishwasher model LX30H; displays wrench and E4.

Water is not to top sensor in alotted time.
Top sensor is in right rear corner, and is the upper of the two. Check the connector to the probe on the outside at the back. (sometimes gets wet fro vacuum breaker leaking when dirty or low flow pressure. Machine needs 20 psi flow rate

Posted on Aug 14, 2009

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1 Answer

The Heavy and Quick lights are blinking


If it is a Samsung, which I imagine it is, then you have too much water getting in to your dishwasher during the fill cycle.

The two most common reasons for this error are: 1) too high of water pressure for your house (it should be about 50 to 70 psi, or thereabouts---Note: You'll need a plumber to fix your PRV valve if your water pressure is above 80 psi) or, 2) your water inlet valve on the dishwasher is bad and letting too much water come in during the fill cycle.

Try to reset the error by turning off the circuit breaker for your dishwasher for about 5 minutes, and then turn it back on and see if that clears out the error. Then, try running another load and if you get the error again, check your water pressure and your water inlet valve.

Good luck!

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Dishwasher won't fill and e4 is flashing


Possible that the inlet valve or the filter is clogged
Click this link: Inlet valve

Jan 23, 2013 | Dishwashers

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What is the float switch


I have no real experience with float switches on dishwashers, but have with some in humidifiers. It's a piece of styrofoam on a narrow metal stick that lifts when the appliance fills with water & lowers when the water empties. If this gets stuck on something, like a dishwasher rack, the unit won't fill or empty the water & the cycles won't work properly. Take a look & see if there is such a thing hung up somewhere in the dishwasher. If you can loosen it, your dishwasher should work again.

Feb 21, 2012 | Beko 24 in. D3421F Free-standing...

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Hobart commercial under the counter diswasher LXIC Model Number 130016. DELIME light comes on every day at startup. Machine will immediatly run (in DELIME mode I think) for about 5-10 min and then get E4...


The machine is trying to tell you to delime it. After a certain number of wash cycles, the LXI dishwasher reminds you to run a delime cycle (instructions are on a label on the bottom of the dishwasher). Judging from your posting, it's been ignored for quite some time, so you may need to run multiple delime cycles, depending on how much scale is built up inside the machine on the probes, wash arms, rinse arms, drain body (though you can't see this part, heavy scale deposits will cause draining problems). So . . . . get some good strong delimer and run a few delime cycles (talk to your chemical supplier about delimer - don't buy some weak stuff like LIME-A-WAY off the shelf).

Once you've delimed the machine, your E4 code may go away. E4 is the dishwasher's way of telling you that it did not fill properly on the initial fill (when you first turn on the machine). More specifically, it means the dishwasher DID NOT SENSE WATER at the upper probe at the rear right of the tank (there are two probes back there, on one assembly, referred to as the MIDDLE and UPPER water level probes). The probe may be coated with lime causing difficulty sensing water at the probe, so a good deliming may clean the probe and fix the E4 problem (in fact, reach back to the probes and break off any heavy built-up lime/scale deposits before deliming). If the E4 code persists after deliming, watch the pressure gauge on the front of the dishwasher. If the gauge reads lower than the green area, you need to adjust or replace the water pressure regulator. If the E4 problem still persists, replace the probe assembly at the rear of the dishwasher.

Dec 08, 2010 | Hobart LXIC-6 Dishwasher

1 Answer

E4 error after attempting to fill and get to temp


This is what I found for the E4 code...hope this helps...and thanks for rating my effort...The Fang.


Machine won't fill or won't fill high enough(LX18, LX30 display shows "E0," "E2," "E3," or "E4")

1.Low water pressure — check for clogged hose strainer; check that site water pressure meets minimum flow pressures.
2.Make sure probes are clean.
3.No water pressure — main water supply valves may not be working.
4.Drain valve open - turn machine off to drain machine, then on. Repeat twice (this assists in clearing any drain valve obstructions). Wait for machine to reach READY mode and press WASH. Slowly open door several seconds later and note water level. Close door; 30 seconds later, open door slowly and check that water level is the same as it was. If not, repeat the
OFF-ON procedure.
5. Delime machine.

Apr 28, 2009 | Hobart 24 in. LXIH-3 Built-in Dishwasher

2 Answers

Kenwood dishwasher Comes up E3


I do not know the Kenwood dishwasher, hence I do not know what the E3 error is, but many dishwashers require a sustained pressure of at least 30 psi.
Can you please post the model number of your Kenwood dishwasher?

Apr 11, 2009 | Bosch 18 in. SRS45E02 / SRS45E08 Exxcel...

1 Answer

Hobart dishwasher model LX30H; displays wrench and E4.


Water is not to top sensor in alotted time.
Top sensor is in right rear corner, and is the upper of the two. Check the connector to the probe on the outside at the back. (sometimes gets wet fro vacuum breaker leaking when dirty or low flow pressure. Machine needs 20 psi flow rate

Dec 11, 2008 | Hobart 24 in. LXIH-3 Built-in Dishwasher

2 Answers

Hobart LXiH preesure gauge is to low - 7 PSI


Todd - A pressure regulator will REDUCE pressure only. There is no back pressure - the machine's gauge is reading the incoming water pressure as it fills/rinses. Assuming the gauge is OK, the machine is only seeing 7 psi. There is an inline strainer in teh machine, check that for blockage. You said the machine was operating on 45 psi with a reading of only 12 psi. There may be some kind of pressure reducer - I have seen Hobart use special supply hoses with builtin orifices.

hope this helps, if not email me, i service commercial machines and came across your question as I was looking for help myself!

recordhound@yahoo.com

dishwasher in subject line

Oct 18, 2008 | Hobart 24 in. LXIH-3 Built-in Dishwasher

3 Answers

E4 error on new conia dishwasher


Had the same problem. First you will need to tilt dishwasher back 45 degrees and tip out all excess water. A couple of towels on the floor are a good idea.

Second check that the little nozzle on the elbow under your sink where your overflow attaches is drilled out.

This fixed my problem after fussing around for a day and I was starting to disconnect everything to take it back.

Sep 15, 2007 | Dishwashers

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