Samsung RS68N Series - Page 68

68
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PRECAUTIONS(SAFETY WARNINGS)
■ Self-diagnostics check list
LED
Item Trouble contents Diagnostic method Image
F R
R-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 CN74
3PIN - 1PIN shall be between
7V~12V
C-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 CN74
2PIN - 1PIN shall be between
7V~12V
F-DEF Error
Separation of freezer
compartment defrost heater
housing part, contact error,
disconnection, short circuit
or temperature fuse error.
Display error : the defrosting
does not finish though
freezer compartment defrost
is heating continuously for
more than 100 minutes.
After separating Main PCB
CN70& SMPS CN01 wire from
PCB, Resistance value between
CN70 9PIN - SMPS CN01
3PIN Shall be 63(230) ohm ±
7%(Resistance value is varied
by input power) 0 ohm : heater
short, ∞ ohm : wire/bimetal
open (Must power off)
Ice Maker
Function Error
When the Freezer Ice Maker
error occurs more than
3 times, the error will be
displayed.
After replacing the Ice Maker,
check if it operates normal.
Damper Heater
Error
Display error when open error
is detected by damper heater :
separation of Damper Heater
housing part, contact error,
disconnection, short circuit.
The voltage of MAIN PCB CN75
1PIN - 2PIN shall be between
7V~12V.
Panel ↔ Main
Communication
Error
Display pc - Er in the panel
with alarm : MICOM MAIN
PANEL communication error.
Actually, If there is not a
problem, it is desirable to
replace Main and Panel PCB
With the oscilloscope after a
cable problem confirming.
Main - Inverter
Communication
Error
Display 44Er in the panel :
Inverter MICOM Main MICOM
communication error.
Actually, If there is not a
problem, it is desirable
to replace Main and Inverter
PCB With the
oscilloscope after a cable
problem confirming.
I/O Expander
Communication
Error
Display 46Er in the panel :
I/O Expander ↔ Main MICOM
communication error.
It is desirable to replace Main
PCB.