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7. TROUBLE SHOOTING GUIDE
23
TROUBLE SHOOTING
PROBLEM
WATER IS
NOT SUPPLIED.
CHECK POINT
Do you open the water
tap?
Is the filter of the water
inlet valve clogged with
dirt?
Is the water pressure
sufficient?
(0.3~8 kgf/cm
2
)
Does the water inlet
valve make operating
sound?
Is the connector or the
terminal connected
properly?
Is the output voltage of
the P.C.B normal?
CAUSE
Water inlet valve
is defective.
Improper connection of
the connector or the ter-
minal.
P.C.B AS is defective.
Lead wire is defective.
SOLUTION
Change water inlet valve.
Open the water tap.
Clean the filter.
Increase the water pres-
sure.
Connect the connector or
the terminal properly.
Change the P.C.B AS.
Change the lead wires.
NO
YES
NO
YES
NO
YES
YES
YES
YES
NO
NO
NO
NOTE : Open the water tap fully and measure
the flow rate.
From the upper results, you know that the flow rate more than
11.5l/min. is essential for water supply.
Flow
11.5 15.0 18.0 20.3 24.1 27.4
rate(l/min.)
Water pressure
0.3 0.4 0.5 0.6 0.8 1.0
(Kgf/cm
2
)
1. When replace the P.C.B. ASS’Y do not scratch the surface of the P.C.B. ASS’Y.
2. Disconnect the power cord from the electric outlet.
NOTES
CONCERNING WATER SUPPLY