One of the most unobvious codes of LG dishwasher is error code nE. When it appears, the appliance does not interrupt the program and works normally, bringing all the modes to the end. The only thing that indicates the existing problem is poorly washed dishes. And that is not always the reason.
Error nE: description
This is a mistake of the diverter distributing water among the rockers of the impeller. It is controlled by an electric motor (Vario Motor), which drives the diverter switch (Micro Switch). As a result, the subunit redirects water every 90 seconds to the nozzles of all spray levers by turns: from the lower to the middle, from the middle to the upper and vice versa.
The micro switch informs the main board of the change of location of the valve. When the central module does not receive the corresponding signal, error code nE appears on the display. The violation affects the operation of the equipment: water flows unevenly into the rockers and the impeller does not wash the dishes well.
Causes of error nE
Sometimes it is caused by a temporary system failure. To solve this problem, it is enough to disconnect the device from the mains for 10 – 15 minutes. If the reboot did not bring the expected results, then error nE is related to the mechanical part.
Switch off the dishwasher and check the harness going to the engine and diverter microswitch. Insert the connectors firmly. Make sure there are no breaks that interfere with signal transmission and cause error code nE in LG dishwasher.
Vario Motor failed
If the wires are OK, disconnect them and measure the resistance of the motor. It becomes worthless when a worn seal leaks water. Ideally, the multimeter should show about 4000 Ω – in this case, error nE will not appear. With infinite resistance, the electric motor must be replaced:
- remove the drain and inlet hoses;
- disconnect input wires;
- pull out the dishwasher and turn it over;
- remove the bottom panel;
- find the part under the number 4681ED3001D (green, round shape);
- install a new Vario Motor (its approximate cost is $ 13).
The diverter switch is broken
After checking the motor, measure the resistance of the Micro Switch (part number 3W40025C). When the piston is inserted, it must be infinite, with the extended one – 0 Ω. If in both cases the resistance is the same, then the micro switch does not determine the diverter position and causes error code nE. Replace the defective element: it costs about $ 18.
The control module fails
Examine the main board. Perhaps you need to re-solder the parts that are responsible for work of the diverter, or repair damaged tracks. If the microcircuit cannot be repaired, you will have to buy a new one. Its average price is $ 145.