When The Ice Maker Does Not Operate - Samsung RF32FM SERIES Service Manual

TROUBLESHOOTING

4-2-10. When the ICE MAKER does not operate

1. Water supplies to the Ice Maker automatically and ice is to be scooped out depending on its temperature and the timing.
2. Power is always applied to the Ice Maker. So, refer to the disassembly section to remove it.
3. To check the operation of the Ice Maker, press the Ice Maker Test Switch .before disassembling it. It is not possible to check its
operation after disconnecting its power.
4. The PCB and the Ice Maker are located at the back and at the front. So, if possible, check it with a team of two technicians.
5. When the Ice Maker Heater is on, it may cause personal injury. So, take extra care while working with the Ice Maker.
Operation Status (CN90 #5)
Stand-by
Test Switch
5V
Micom (IC01) Operation Status
Stand-
Rotation
by
CN52 #6
(Blade Ice 0V 4.9V
Scoop)
CN90 #4
(Guide Ice 0V 0V
Full)
Operation Condition upon Motor Rotation,
Operation Status of Micom (IC01)
Motor Load (#72, #73)
Heater Load (#28)
Heater operates differently according to its
conditions. During the Test Mode, it will be on
30 seconds.
On
0V
Before
Home
completing
4.9V 0V
4.9V 0V
Stand-
On
by
0V 5V
0V 5V
Start
When pressing the Ice Maker
Test Switch (over 1.5 sec), does
it rotate?
Yes
Voltages at IC01 CN52 #6 and
CN90 #4 are normal?
Yes
Is water supplied within 6
minutes (after Ice Full and
Parallel Detection)?
Yes
ICE Maker Sensor itself is in
good condition?
Yes
PCB and other parts are normal,
Check again the Connector contact
69
No
1) Check and Replace ICE MAKER KIT
2) Check Main PCB Input Signal /
Replace the Main PCB
(CN90 #5 - "0V")
No
1) Check after connecting the Wire
Harness
2) Check and Replace ICE MAKER KIT
3) Replace MAIN PCB
No
1) Check and replace Water Valve
* Refer to Water Valve operating
conditions
2) Replace MAIN PCB
No
1) Check and replace Water Valve
* Refer when Ice Maker Sensor is
defective