LG WM2496H M Series Manual page 70

Test Mode
Tests 4, 5, 6, 7, 10, 11
The numbers shown in the display indicate the water level frequency.
Divide the number in the display by 10 to get the reading in kHz.
example:
The display shows 241, so the reading is 24.1 kHz.
WM2496H*M
p22