Err4 came on drain clogged..have fixed but cant get error to stop

Check the following:
Are the water inlet hoses kinked or clogged?
Are the water inlet valve screens clear?
Press STOP to clear display.

LG DISHWASHER ERROR CODES AND DESCRIPTION MODELS LD 1420W2 D1420WF LD...

ERROR CODES; FAULTS & REMEDY ERROR DISPLAY [IE]
Inlet error.
Condition: Not reached to the normal water level in spite of 10 min. water supply.
Possible causes:

1. The Water Tap is not opened.
2. The Inlet Hose is twisted.
3. The Filter of inlet valve clogged by impure water.
4. The Inlet Water Valve is normal ?
5. The water pressure is very low. ( below 0.5 kgf/ )
6. Inlet valve is blocked by safety device for leakage sensing.(In case of Inlet Valve).

Remedy

• Open the Water Tap.
• Repair the Inlet Hose.

1.Close the Water Tap.
2.Unscrew the Inlet Hose (Inlet Valve side)
3.Clean the Filter of Inlet Valve.
> Replace or repair the Inlet Valve.
> Check the water remain on the base.
1.Check the point of damages and repair or replace the related parts.
2.Disconnect the inlet hose to dishwasher to unlock the safety valve.
ERROR DISPLAY [OE]
Drain error.
Condition: Not fully drained out in spite of 5 min. drain operation.
Possible causes:

1. The Filter clogged.
2. The Drain Hose twistec or blocked.
3. The Drain Pump/Motor or circuit is troubled.

Remedy

• Clean the Filter.
• Remove the cause of twist or block.
• Replace the Drain Pump/Motor or repair the Circuit.

ERROR DISPLAY [E I ]
Leakage error.
Condition: The water level in Tub goes down during operation.
Possible causes:

1. Water leakage in Hose connections.
2. Water is leaked by damages.
3. Impeller of the washing Pump is worn away.
4. The Thermal Protector of the washing motor is functioned

Remedy

• Replace the connections of Hose.
• Check the point of damages and repair or replace the related parts.
• Replace the washing pump.
• Check the applied voltage.

ERROR DISPLAY [ F E ]
Excess error.
Condition: Excessive water is supplied than normal water level.(Automatically drain Pump operated.).
Possible causes:

1. The Inlet Valve is troubled.
2. The Air Break is troubled.
3. The Sensor Assembly is troubled.
4. The Controller is troubled.

Remedy

• Replace the Inlet Valve.
• Replace the air breaker.
• Replace the sensor assembly.
• Repair or replace the controller.

I am not familiar with any error code referencing "LP". Could you be seeing "LF"?
Below are the error codes listed for your washer:

• "LF" (Long Fill) Inlet hoses are kinked or clogged or water valve screens are not clear. (Solution: Straighten inlet hoses or clear screens of any foreign material.)
• "LD" (Long Drain) Drain hose is kinked or clogged. (Solution: Straighten or unclog hose.)
• "FF" (Fill Failure) Problem with water level sensing system. (Solution: Call for service.)
• "OL" (Open Lid) Lid Is open during drain or spin. (Solution: Close lid.)
• "PF" (Power Failure) Power to washer went off during cycle. (Solution: Press any pad to clear the display. Restart the washer from the beginning of the cycle.)

Source: Kenmore 11026955690 Manual

Is there a chance the plumber turned off the inlet water connection under the kitchen sink when clearing the drain?

Hi there,

Well first of all you can check that the stopcock is opened fully or whether the water inlet hose is kinked. Check that the water inlet filter is not clogged and clean it, if necessary, as described in the operating instructions. Check that the drain pump is not clogged.

Reset the error message as follows: To cancel the error message, turn the rotary selector switch to "Stop/End" or press the "Start/Stop" switch for approx. 5 secs. Then switch the appliance off and then back on again. 

Good Luck!!

Thanks for using FixYa!!

Hi there,

Well to Reset the error message as follows: To cancel the error message, turn the rotary selector switch to "Stop/End" or press the "Start/Stop" switch for approx. 5 secs. Then switch the appliance off and then back on again. 

If resetting not work then you can check that the stopcock is opened fully or whether the water inlet hose is kinked. Check that the water inlet filter is not clogged and clean it, if necessary, as described in the operating instructions. Check that the drain pump is not clogged.

Good Luck!!

From the owner's manual:

"LF" (Washer is taking too long to fill)
Check the following:
Are the water inlet hoses kinked or clogged?
Are the water inlet valve screens clear?
Press STOP to clear display.

Here's a suggestion I found that worked for me:

Check your drain hose to see it it's stuffed too far down the standpipe. Another poster had this problem and it gave her LF errors. If the drain hose hangs down too far it can siphon water out of the washer, and then the washer thinks it's taking too long too fill. There's supposed to be a U-shaped plastic bracket that sets the length of the drain hose where it goes into the standpipe. Your installer may have tossed it.

the F code is a puwer outige. This is how to fix
Select PAUSE/CANCEL twice to cancel the cycle. Select
DRAIN & SPIN if there is excessive water in the washer.
Re-select cycle and press START. If the problem remains, call
for service.
This is what an HF code is.
"FH" (Water Inlet Problem--no water or insufficient water
supply)
Select PAUSE/CANCEL twice to cancel the cycle. Unplug
washer or disconnect power.
Check the following:
Are water faucets completely turned on?
Are screens at inlet hose connection to washer clogged?
Are water inlet hoses kinked?
Are water inlet hoses frozen?
Plug in washer or reconnect power. Re-select cycle and press
START. If the problem remains, call for service.

Hi I had the same problem with a whirlpool adp6000ix. Although it looked fine from the inside, the base was full of water. I managed to fix the problem by pulling the dishwasher out and then tilting it gently to the side. All of the hidden water in the base poured out which cleared err4. It is now working fine. Tip: Make sure you have a couple of towels spread around before you tilt it. Good luck!

OL on my washing machine