Water Level Switch - LG WM3677HW Training Manual

COMBO

WATER LEVEL SWITCH

The water level detector switch monitors the water level and feeds this
information to the MICOM. The sensor reads air pressure in an air chamber on
the tub. The air pressure changes in relation to the depth of the water, moving a
diaphragm in the switch. As the water level fluctuates, it raises or lowers the iron
center in the coil, which, in turn, changes the electric resonance of the oscillator
circuit of which it is a part. As water level decreases, frequency increases.
(e.g. A low water level may read 25.5kHz, while a high water level may read 21.4
kHz. These readings are approximate; washers in the field may vary slightly from
these figures.)
To read the frequency while the COMBO is running, press and hold the SPIN
SPEED and SOIL LEVEL buttons. The number on the display should be divided
by 10 to obtain the frequency reading in kHz. A display of 254 would indicate a
frequency of 25.4 kHz. The MICOM interprets the frequency reading as one of
eight levels, with one being the lowest water level and any level greater than
eight indicating an overflow situation.
WM3677 COMBO Page 50 of 68 TRAINING MANUAL