Samsung RF28R7201 AA Series Service Manual page 57

※ R Self-diagnostics check list
LED
F R
(Fridge) Sensor
Item Diagnostic method
Humidity The voltage of MAIN PCB CN60-"3"
↔ "7": shall be between 4.5V~1.0V
sensor
Ice Maker
The voltage of MAIN PCB CN90-"14"
↔ "24": shall be between 4.5V~1.0V
Error
Ice Room The voltage of MAIN PCB CN90-"2"
↔ "4": shall be between 4.5V~1.0V
Sensor Error
Freezer Fan The voltage of MAIN PCB CN20-"16"
↔ "18": shall be between 7V~12V
Error
Fridge Fan The voltage of MAIN PCB CN20-"15"
↔ "17": shall be between 7V~12V
Error
TheThe voltage of MAIN PCB CN40-
C-Fan Error
"11" ↔ "13": shall be between 7V~12V
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TROUBLESHOOTING
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