9. TROUBLE SHOOTING GUIDE
28
TROUBLE SHOOTING
PROBLEM
WATER IS
NOT SUP-
PLIED.
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
11.5
l
/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
C o n c e r n i n g W a t e r S u p p l y
Summary of Contents for DWF-770
Page 35: ...APPENDIX 34 WIRING DIAGRAM Wiring Diagram non pump single valve bubble...
Page 36: ...35 WIRING DIAGRAM non pump single valve non bubble...
Page 37: ...36 WIRING DIAGRAM non pump single valve bubble...
Page 38: ...37 WIRING DIAGRAM non pump non bubble...
Page 39: ...38 WIRING DIAGRAM pump single valve bubble...
Page 40: ...39 WIRING DIAGRAM pump bubble...
Page 41: ...40 WIRING DIAGRAM pump non bubble...
Page 42: ...41 PARTS DIAGRAM Parts Diagram...
Page 43: ...42 PARTS DIAGRAM...
Page 46: ...45 PARTS DIAGRAM...
Page 48: ...47 PARTS DIAGRAM...
Page 50: ...49 PARTS DIAGRAM...