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5-2-2 Troubleshooting - Driving Unit
The description below is based on the condition that Power Supply Unit and Key-In Unit are
working correctly. It is based on the status after a Start key is pressed.
1. No Water Supply
No W/S(water supply)
Start/Pause
is pressed after
W/S valve gives
Zee sound during
water supply?
Connect the terminal
firmly.
NO
is electrically
continuous?
W/S valve is
continuous?
NO
selecting a
course?
YES
YES
NO
W/S valve
terminal is
securely
connected?
YES
W/S valve
YES
YES
YES
electrically
NO
Is pulsator
rotating?
NO
Replace defective
PCB ASS`Y.
Water
tap is
opened?
YES
Water
YES
supply has
been cut
off?
NO
Foreign
YES
materials exist
on W/S hose
or valve?
NO
Replace defective W/S
valve.
YES
17
Press Start/Pause key.
NO
Open the water tap.
Turn off the water tap
and turn Power OFF.
Clean the filter by using
a brush.
Replace defective Level
Sensor.
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