If Ice Water Is Not Supplied; Fridge Ice Water Valve - Samsung RFG237AA Service Manual

TROUBLESHOOTING

4-2-13. If ICE Water is not supplied

1. Please shut the water supplying prior to repair.
2. Power is applied to the one end of wires. Be careful when disassembling not to get an electric shock.

1) Fridge Ice Water Valve

Typical PCB Ground REG1 Heater Sink
☞ Checking method of voltage Based on
PCB typical Ground REG1 Heater Sink
1) Check the voltage of IC73#4(same voltage
as IC01 #54)
- ICE Water valve operating (about 5V±0.5V)
Based on PCB typical Ground REG1 Heater Sink
2) IC73 #15 voltage
- ICE Water valve Waiting (about 13V±0.8V)
- ICE Water valve operating (about 0.7V±0.5V)
3) Check the voltage of Fridge Ice Water Valve
operating(AC voltage)
=> For checking the Relay RY78 operating.
CN73 and CN74 combined and use same connector(13p)
CN70#9(Red) ↔ 13P#7(Purple)
- ICE Water valve waiting (about AC 0V)
- ICE Water valve operating (about AC 115V ± 20%)
Start
Is the confirming sound of
the valve operation heard when
Ice maker(R) test switch pushed?
Does Main PCB MICOM
#54 have high (5V)output?
Does Main PCB IC73
#15 have about 0.7V
output?
Is the contact point of main
PCB RELAY RY78 normal?
MAIN PCB normal
-- Need to check the other parts
① Check the wire between Ice
water valve↔MAIN PCB
② Ice water valve itself has trouble
or bad contact of connector
③ Check the connection hose
90
Normal(Check Ice
water valve hose)
Check soldering
short/Replace PCB
Check soldering
short/Replace PCB
Check soldering
short/Replace PCB