4-21) If Water Is Not Supplied - Samsung RH25H561 Series Service Manual

TROUBLESHOOTING

4-21) If Water is not supplied

MAIN PBA normal
-- Need to check the other parts
① Check the wire between water valve
MAIN PBA
② Ice water valve itself has trouble or bad
contact of connector
③ Check the connection hose
④ Check the operation between Panel PBA
and MAIN PBA for Communication.
Start
Is the confirming
sound of the valve operation heard
when dispenser switch
pushed?
NO
Is the valve unit normal?
YES
Is the voltage of
CN50 #6 changed 0V~5V according to
switch On/Off?
YES
Does Main PBA
IC73 #6 have about 5V input when
switch is on?
YES
Does Main PBA IC73 #13
have about 0.7V output when
switch is on
YES
Is the contact point of main
PBA RELAY RY79 normal?
YES
YES Normal(Check Ice
water valve hose)
NO
Replace Valve
1) Check the dispensing lever
NO
2) Check switch unit/ wiring
connection
3) Replace PBA
NO
Check soldering
short/Replace PBA
NO Check soldering
short/Replace PBA
NO Check soldering
short/Replace PBA
65