83
TROUBLESHOOTING
1. Water is automatically supplied to the Ice Maker depending on temperature & time condition and Ice Maker
Dispenses cubed or crushed ice.
2. Power is applied to the one end of wires. Be careful when disassembling and shall refer to its exploded
diagram in any case.
3. Ice Maker operation shall be checked after pressing the Ice Maker testing switch.
(Fridge Ice Maker) It is not possible to check when the power is disengaged.
4. We recommend that TWO PEOPLE check the PCB and Ice Maker because they are located at front and rear
side each.
5. Be careful! The Ice Maker Heater can cause personal injury like burn.
4-2-5. If Ice Maker does not operate
☞
Checking Method of ICE Maker Voltage
With typical PCB Ground REG1 Heater Sink and
1) Test Switch operation (press selected) : CN90-"2"(Black) shall be DC 0V.
Test Switch ready ; CN90-"2"(Black) shall be less than DC 5V.
☞
Checking Method of ICE Maker Voltage
With typical PCB Ground REG1 Heater Sink and
2) IC02 MICOM #39 voltage ; Ready(0V)
→
Rotate (4.9V)
→
Before
complete(4.9V)
→
Return(0V)
* MICOM #39 voltage is same as Connector CN90-”7”(Purple)
3) IC02 MICOM #38 voltage ; Ready(0V)
→
Rotate (0V)
→
Before
complete(4.9V)
→
Return(0V)
* MICOM #38 voltage is same as Connector CN90-”6”(Blue)
1)Test Switch operating
1)Test Switch ready
Typical PCB Ground
REG1 Heater Sink
Displays ERROR Code
Start
1) Replace the Ice Maker Kit
2) Check/Replace the Main PCB
input signal
(Micom IC01 Pin #37 - “0V”)
Does Ice Maker
rotate when pressing the Ice Maker
testing switch(over 1.5 sec)?
No
1) Check the wiring connections.
2) Replace Ice Maker Kit
3) Replace MAIN PCB
Is the input voltage of IC01
MICOM #38,#39 normal?
No
1) Replace the Water Valve
* Refer to the operation
condition of Water Valve
2) Replace the Main PCB
Is the water supplied in 6
minutes (After sensing ice bucket
fully)?
No
1) Repair the Ice Maker Sensor
* Refer to the solution “If Ice
Maker Sensor has trouble”
No trouble with PCB and temperature sensor,
Check the bad wiring connections.
Is the Ice Maker Sensor unit normal?
No
Operating Condition when motor rotates
Operating Status of Micom(IC01)
Heater operates differently according to the
conditions. Test Mode operation will be 30 sec.
Ready
0V
0V
0V
Operation
5V
5V
5V
Heater Load(#85)
Motor CCW Load(#101)
Motor CW Load(#102)
MICOM(IC02) Operation Status
#37
(Test Switch)
Operation
5V
Ready
0V
MICOM(IC01) Operation Status
#39
(Blade Ice Scoop)
#38
(Guide Ice Full)
Ready Rotation
Before
Complete
Returning
0V
4.9V
4.9V
0V
0V
0V
4.9V
0V
☞
Check the ICE Maker Heater & Motor Resistance
1) Measuring the Ice Maker Heater
resistance values
CN70-"3"(Black)
↔
"13"(Black)
Resistance value : 91(365)Ohm
±
30%
Resistance value : 3.5KOhm
±
7%
CW :CN73-"11"(Brown)
↔
CN70-"11"(Red
CCW:CN73-"13"(White)
↔
CN70-"11"(Red)
2) Measuring the Ice Maker Motor
resistance values
Yes
Yes
Yes
Yes
AW3 SM-EN 2011.3.31 2:56 PM 페이지83 in
Summary of Contents for RF4287HARS
Page 17: ...18 PRODUCT SPECIFICATIONS 2 5 Dimensions of Refrigerator Inches AW3SM EN2011 3 312 52PM 18 in...
Page 86: ...87 TROUBLESHOOTING IPM FREEWHEELING DIODE VOLTAGE VALUE AW3SM EN2011 3 312 56PM 87 in...
Page 96: ...97 TROUBLESHOOTING SPM Internal DIODE Voltage AW3SM EN2011 3 312 56PM 97 in...
Page 98: ...99 TROUBLESHOOTING INVERTER PCB Circuit Diagram AW3SM EN2011 3 312 56PM 99 in...
Page 124: ...125 7 1 Model RFG295AA BETTER 7 WIRING DIAGRAM BLU BLU AW3SM EN2011 3 312 57PM 125 in...
Page 125: ...126 7 2 Model RF4287AA BEST 7 WIRING DIAGRAM AW3SM EN2011 3 312 57PM 126 in...
Page 126: ...127 7 3 Model RFG299AA 7 LCD 7 WIRING DIAGRAM BLU BLU AW3SM EN2011 3 312 57PM 127 in...
Page 127: ...128 7 4 Model RFG294AA SEARS 7 WIRING DIAGRAM AW3SM EN2011 3 312 57PM 128 in...
Page 129: ...130 8 SCHEMATIC DIAGRAM 8 1 2 INVERTER BLOCK RF4287 AW3SM EN2011 3 312 58PM 130 in...
Page 130: ...131 8 2 CIRCUIT DIAGRAM SCHEMATIC DIAGRAM 8 2 1 MAIN AW3SM EN2011 3 312 58PM 131 in...
Page 131: ...132 SCHEMATIC DIAGRAM 8 2 2 INVERTER AW3SM EN2011 3 312 58PM 132 in...
