70
TROUBLESHOOTING
Yes
Yes
Yes
High (5V) is output at
MAIN PCB IC73 #4?
0.7V is output at MAIN
PCB IC73 #15?
The contact at the Main
PCB Relay RY7B is
normal?
Advance Checking
1. Water is directly supplied to the Water Valve. So, make sure to cut off the water before doing repairs.
2. There is electricity flowing in the wire. So, take extra care not to get electric shock.
Start
Normal
(Check the Ice Water Valve
Connector)
Check Soldering / Replace PCB
Check Soldering / Replace PCB
Check Soldering / Replace PCB
Check Soldering / Replace PCB
Main PCB is normal.
-- Check the followings
①
Check the continuity between the Ice
Water Valve and the Main PCB
②
Check the Ice Water Valve connector or
replace the Ice Water Valve
③ Check the Water Line
Yes
No
No
No
No
No
Yes
Is the Valve operating sound
heard after the Ice Maker Test
Switch is pressed?
Does the voltage at the
MAIN PCB CN90 #5 upon the
operation of the Test Switch rotates
between 5V and 0V?
4-2-11. When water does not supply at Ice Maker