Samsung RF4287HARS Service Manual page 78

AW3 SM-EN 2011.3.31 2:56 PM 페이지79 in
TROUBLESHOOTING
11) Ice Duct Heater(option) has trouble
ERROR Code
Heater
Connector
ohm
Micom
Heater
(IC01)
#50
Ice Duct
☞ Checking method of Flex Room Damper
resistance CN51-"2"(Brown) ↔ CN79-"2"(Yellow)
** ∞Ω: Open(wire disconnection, heater
disconnection) trouble / 0Ω: Short trouble
Ice Duct
↔
CN51-#2 CN79-#2
±
60ohm 7%
Initial Heater Working
power On off heater
3.5V ~ 3.5V ~
0V
4.8V 4.8V
Is Tank Water Heater
normal?(about72ohm)
Start Start
Is MAIN PCB
NO
connector (CN51,CN79,CN76)
inserted correctly?
YES YES
Bad contact of connector/ insert correctly
NO
Is Tank Water Heater
normal?(about 60ohm)
YES YES
NO
Is the input voltage of IC01
MICOM #50 normal?
YES YES
Normal(recheck)
79
1) Wire connector
2) Replace Heater
1) Recheck the wire
2) Replace PCB MAIN