92
TROUBLESHOOTING
4-2-11. If ICE Water is not supplied
Start
Is the confirming sound of
the valve operation heard when
Ice maker test switch pushed?
Does Main PCB IC01
MICOM #7 voltage change
5V/0V?
Does Main PCB IC01
MICOM #104 voltage have
high(5V) output?
Is the contact point of main
PCB RELAY RY78 normal?
Does Main PCB
IC73 #15 have about 0.7V
output?
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
Normal(Check Ice
water valve hose)
Check soldering
short/Replace PCB
Check soldering
short/Replace PCB
Check soldering
short/Replace PCB
Check soldering
short/Replace PCB
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 #104)
- 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 12V
±
0.8V)
- ICE Water valve operating (about 0.7V
±
0.5V)
3) Check the voltage of Water Valve operating
(AC voltage)
=> For checking the Relay RY78 operating.
CN73 and CN74 combined and use same
connector(13p)
CN70-"11"(Red)
↔
CN73-"7"(Purple)
- ICE Water valve waiting (about AC 0V)
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.
AW3 SM-EN 2011.3.31 2:56 PM 페이지92 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...