Samsung RF23HT Series Service Manual page 64

TROUBLESHOOTING
※ R Self-diagnostics check list
LED
F R
or
Item
Display error when open error is detected
Pantry-Damper- by damper heater : separation of Damper
Heater Error Heater housing part, contact error,
disconnection, short circuit.
The error occurs when there is a wire
FZ-Ice Pipe Heater
connector slip-out of the Water Supply
Pipe Heater, a contact error or a
Error
breakage in the wiring.
Display error when open error is detected
Ice Maker(FF) Function
by Heater : separation of Ice Pipe Heater
housing part, contact error, disconnection,
Error
short circuit.
Display error during operation of
applicable fan motor : Feed back signal
Ice Room-FAN Error
line contact error rnotor wire separation
motor error.
Display pc - Er in the panel with alarm :
Panel ↔ Main
MICOM MAIN ↔ PANEL communication
Communication Error
error.
Display 44Er in the panel :
Main - Inverter
Inverter MICOM ↔ Main MICOM
Communication Error
communication error.
Display 46Er in the panel :
I/O Expander
I/O Expander↔ Main MICOM
Communication Error
communication error.
The Error will be displayed when the
FF Ice Pipe Heater is detected as being
FF Ice Pipe Heater
open due to the followings.
Error
- Ice Maker Pipe Heater Connector Slip-
Out, Contact Defect or Wire-Breakage
The Error will be displayed when the Ice
Ice Room Heater is detected as being
FF Ice Room Heater
open due to the followings.
Error
Ice Room Heater Connector Slip-Out,
Contact Defect or Wire-Breakage.
Comp starting Failure
When the Compressor fails starting
Error
IPM Fanlt Error When there is a IPM Fault error
Comp Abnormal
When ther is abnormal crrunt detected at
current Detection
the Compressor
Error
Motor Locked Over When there is a Compressor restriction
RPM Error error
Comp under voltage
When there is a low voltage error
Error
Comp over voltage
When there is a over voltage error
Eroor
Trouble contents
F R
64
Diagnostic method
After separating MAIN PCB CN77 wire from
PCB, resistance value between Black ↔ Brown
wire shall be 135 ohm± 7%.
0 ohm : heater short, ∞ Ohm : wire / bimetal
Open.
When measuring the resistance of the Main
PCB CN79 Yellow-Pink wires, it should be
within 102Ω ±7%.
0Ω : heater short, ∞Ω : Check for Wire Open
or Connector Slip-out
After changing the Ice Maker(R), plug the
refrigerator power code again, and check the
operation.
When measuring the voltage between the
Main PCB CN76-"2" ↔ CN76-"1", it should read
between 7.0V~12V.
Actually, If there is not a problem, it is desirable
to replace Main and Panel PCB With the
oscilloscope after a cable problem confirming.
Actually, If there is not a problem, it is desirable
to replace Main and Inverter PCB With the
oscilloscope after a cable problem confirming.
It is desirable to replace Main PCB.
The resistance between CN79 ORG and CN51
BRN on the Main PCB shall be within 135Ω ±
7%. And, when the resistance reads 0Ω or ∞
Ω, check the followings.
0Ω : Heater Short
∞Ω : Wire-Breakage or Wire Slip-Out
The resistance between CN79 ORG and BRN
on the Main PCB shall be within 135Ω ±7%.
And, when the resistance reads 0Ω or ∞Ω,
check the followings.
0Ω : Heater Short
∞Ω : Wire-Breakage or Wire Slip-Out
Check if there is a short between compressor
terminals. Check IPM Voltage [Under 13.5V]
Check if there is a short between IPM Pins
[#1~33]
Check the Compressor and the Cycle
Check the Compressor connections Check the
voltage of Resistance of R308
[0.09Ohm] Check the Compressor and the
Cycle
Check the voltage of Resistance of R308
[Short/Open] Check the voltage of both of
C103 terminals [Unstable Voltage] Check the
Compressor and the Cycle
Check the voltage of Resistance of R513 [Short/
Open]
Check the voltage of Resistance of R501, R505,
R509 [Short/Open]