<<<When starting a cycle, the unit fills with water and then about halfway through the fill, turns on the drain pump, emptying the basin. Instead of stopping, it keeps right on running, turning off the drain pump after emptying the basin and then powering up the vario motor as if it's going to wash some dishes. Eventually it throws the E1 error code because the basin is empty>>>
Caused by one or both of the following conditions:
1) Contaminated/gummed-up FLOAT ASSY (4769DD2001A)---always replace.
2) Hose that connects the Float Assy-to-the-Sump Housing---is restricted/blocked by fatty deposit. This hose can be removed and cleaned.
Inspect the GUIDE ASSY (4769DD1001A) as well (there's a small paddle-wheel/Hall Sensor within it).
If there's evidence of iron deposit forming (reddish color)---replace the Guide Assy rather than just the Float Assy.
NOTE: A replacement Guide Assy---includes a new Float Assy (complete kit).
Iron deposits cause the Hall Sensor to malfunction---and not be able "to read/measure" the amount of water entering the tub.
A few things to be aware of:
This dishwasher was built before September 2006---and DOES NOT have the Drain Hose with a *siphon break*.
If the drain hose runs/routes through the floor (in a basement/crawl space)...
Install a new GUIDE ASSEMBLY (4975DD1001A) and the DRAIN HOSE (AEM69493801) which has the siphon break---to prevent loss of wash water during the cycle. Another option would be (if possible) to re-locate the original drain hose to the sink drain or disposer. If connected to a disposer---always leave a *loop* in the drain hose---to prevent debris/sink water from entering the drain hose---from the disposer.
The original Drain Hose is white (color) and 18mm diameter---these were prone to splitting/cracking---causing water leaks during drain.
A revised Drain Hose (AEM30700301) was introduced to eliminate this. It is gray (color) and 20mm diameter AND IS AN EXACT REPLACEMENT for the *original* white drain hose (Has NO SIPHON BREAK).
If a siphon break is not needed---this hose is the correct replacement.
All LG dishwasher drain hoses have a *U* shaped plastic HOSE HOLDER at the rear/base of the unit.
This HOLDER keeps the hose in place.
Since the newer Drain Hose is 20mm---a new HOLDER (AGM31767901) is available (if desired---it *can* be left off/discarded with no ill effect).
If the GUIDE ASSY (4975DD1001A) is being replaced---and the drain hose is either the original *white 18mm* hose OR the new *20mm gray hose* (AEM30700301)---and there's NO SIPHON BREAK HOSE (AEM69493801)...
Add a rubber cap to the hole at the top of the new GUIDE ASSY.
Any cap that fits will work---then tighten/secure that rubber cap with a zip tie.
This hole at the top of the *all* new GUIDE ASSYs---is where the small black overflow tube connects to---on the drain hose which *has* a siphon break.
Failure to seal this hole---will cause a leak during the cycle.
All LG 5811 dishwashers have a flawed WASH MOTOR.
Ask your customer if any service had been done to the dishwasher previously. If not---a new SUMP ASSY (AJH31248604) may be needed.
Wrap/protect those wires within the door (that you've mentioned)
I know it's a lot to be aware of (and causes brain fatigue)---but good luck:)
Edited by john63, 12 October 2013 - 09:20 PM.