20
CONCERNING WATER SUPPLY
8. TROUBLE SHOOTING GUIDE
NOTE:
1. When you 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.
PROBLEM
CHECK POINT
CAUSE
SOLUTION
Do you open the
Water tap?
Open the water
tap.
Is the filter of the
water inlet valve
clogged with dirt?
Clean the filter.
Is the water pressure
sufficient?
(0.3~8 kgf/cm )
Increase the water
pressure.
WATER IS
NOT
SUPPLIED
NO
YES
NO
Does the water inlet
valve make operating
sound?
Change water inlet
valve.
YES
Flow
rate (
l
/min)
Water pressure
(kgf/cm )
2
11.5
15.0
18.0
20.3
24.1
27.4
0.3
0.4
0.5
0.6
0.8
1.0
NOTE: Open the water tap fully and measure the flow rate.
From the upper results, you know that the flow rate more than
11.5
l/
min. is essential for water supply.
Water inlet valve
is defective.
Is the connector or
the terminal connected
properly?
NO
Improper connection
of the connector or
the terminal
Connect the connector
or the terminal
properly.
Is the output voltage
of the P.C.B normal?
NO
P.C.B ASS'Y is
defective.
Change the P.C.B AS.
YES
Lead wire is defective.
Change the lead wires.
YES
NO
NO
YES
YES
2
