* Self-diagnosis CHECK LIST
To do list
LED
Item Trouble contents Diagnostic method
F R
Ice Maker(FF)
Sensor Error
Display error : separation of
sensor housing part, contact
error, disconnection, short circuit.
Display error of detecting
temperature of sensor : more
than 149
℉(+65℃) or less than -
58℉(-50℃)
The voltage of MAIN PCB CN90- “1” ↔
CN90-”7”: shall be between 4.5V~1.0V
Ice Room
Sensor Error
When measuring the voltage between
the Main PCB CN78-"10" ↔ CN78-"12", it
should read between 4.5V~1.0V.
Sparkling-
Sensor
Error
Display error : separation of
sensor housing part, contact
error, disconnection, short circuit.
Display error of detecting
temperature of
sensor : more than 149
℉(+65°C)
or less than -58℉(-50°C)
The voltage of ASSY KIT PCB CN32- “1”
CN32-”3”: shall be between 4.5V~1.0V
FZ-FAN Error
Display error during operation of
applicable fan motor : Feed back
signal line contact error, motor
wire separation, motor error
The voltage of MAIN PCB CN76- “3”
(Yellow) ↔ CN76-”1”(Gray): shall be
between 7V~12V
FF-FAN Error
Display error during operation of
applicable fan motor : Feed back
signal line contact error, motor
wire separation, motor error
The voltage of MAIN PCB CN76- “4”
(Orange) ↔ CN76-”1”(Gray): shall be
between 7V~12V
5. Check the installation status
5-1. Function for failure diagnosis
133
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