Troubleshooting Guide; Concerning Water Supply - Daewoo DWF-7560 series Service Manual

11. TROUBLESHOOTING 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.

CONCERNING WATER SUPPLY

PROBLEM
WATER IS
NOT
SUPPLIED.
CHECK POINT
Do you open the
Water tap?
YES
Is the filter of the
water inlet valve
clogged with dirt?
NO
Is the water pressure
sufficient?
2
(0.3~8 kg/cm )
YES
Does the water inlet
valve make operating
sound?
NO
Is the connector or
the terminal connected
properly?
YES
Is the output voltage
of the P.C.B normal?
YES
CAUSE
NO
YES
NO
NOTE: Open the water tap fully and measure the flow rate.
Flow
rate (l /min)
Water pressure
(kg/cm ) 3
From the upper results, you know that the flow rate more than
11.5l/min. is essential for water supply.
YES
Water inlet valve
is defective.
Improper connection
NO
of the connector or
the terminal.
P.C.B ASS'Y is
NO
defective.
Lead wire is defective.
41
SOLUTION
Open the water
tap.
Clean the filter.
Increase the water
pressure.
11.5 15.0 18.0 20.3
0.3 0.4 0.5 0.6
Change water inlet
valve.
Connect the connector
or the terminal
properly.
Change the P.C.B AS.
Change the lead wires.
24.1 27.4
0.8 1.0