Self-Diagnostics Check List - Samsung RFG237AA Service Manual

TROUBLESHOOTING

Self-diagnostics check list

LED Item
R-1-ⓐ
Ice Maker(R) Sensor Error
R-10-ⓓ
Ice Maker(F) Sensor Error
R-1-ⓑ
R-Sensor Error
R-1-ⓒ
R-DEF-Sensor Error
R-1-ⓓ
R-FAN Error
R-1-ⓔ
Ice Maker(R) operation Error
R-10-ⓔ
Ice Maker(F) operation Error
R-1-ⓖ
R-DEF. Error
F-1-ⓐ
Ambient-Sensor Error
F-1-ⓑ
F-Sensor Error
F-1-ⓒ
F-DEF-Sensor Error
F-1-ⓓ
F-FAN Error
F-1-ⓔ
C-FAN Error
F-1-ⓕ
Ice Room Sensor Error
F-1-ⓖ
F-DEF. Error
F-10-ⓑ
Ice Room-FAN Error
R-10-ⓐ
Pantry-Damper-Heater Error
R-10-ⓑ
Pantry-Sensor Error
R-10-ⓖ
Water Tank-Heater Error
F-10-ⓖ
Panel↔Main communication Error
R-10-ⓕ
Ice Pipe-Heater Error
Trouble contents
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)
Display error during operation of applicable
fan motor : Feed Back signal line contact
error, separation of motor wire, motor error
Display error : ice making kit is harvested
more than 3 times and level error
** Apply to the applicable Ice Maker model.
ice making kit is harvested more than 3
times and level error
** Apply to the applicable Ice Maker model.
Display error : separation of fresh food compartment defrost heater housing
part, contact error, disconnection, short circuit or temperature fuse error.
Display error : the defrosting does not finish though fresh food compartment
defrost is heating continuously for more than 80 minutes.
Display error : sensor housing separation,
contact error, disconnection, short circuit
Display error by detecting temperature of
sensor: more than 149℉(+65°C) or less
than -58℉(-50°C)
Display error during operation of applicable
fan motor : Feed Back signal line contact
error, motor wire separation, motor error
Display error during operation of applicable
fan motor : Feed Back signal line contact
error, motor wire separation, motor error
Display error : sensor housing separation,contact error,
disconnection, short circuit.
Display error by detecting temperature of sensor: more
than 149℉ (+65°C) or less than -58℉ (-50°C)
Display 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 fresh food compartment
defrost is heating continuously for more than 70 minutes.
Display error during operation of applicable fan motor :
Feed Back signal line contact error, motor wire separation,
motor error
Display error when open error is detected by damper
heater : separation of Damper Heater housing part,
contact error, disconnection, short circuit
Display error : separation of sensor housing, contact error,
disconnection, short circuit.
Display error by detecting temperature of sensor: more than 149℉
(+65°C) or less than -58℉(-50°C)
Display error when open error is detected by Water Tank
Heater : separation of Water Tank Heater housing
part,contact error, disconnection, short circuit
Display "Pc - Er" in the panel with alarm : MICOM MAIN
PANEL communication error oP-Er is displayed when the
Option is not equivalent with the right value.
Display error when open error is detected by Ice Pipe
Heater : separation of Water Tank Heater housing
part,contact error, disconnection, short circuit
57
Diagnostic method
The voltage of MAIN PCB CN30 #7↔CN76
#1:shall be between 4.5V~1.0V
The voltage of MAIN PCB CN90 #8 ↔#4:
shall be between 4.5V~1.0V
The voltage of MAIN PCB CN30#6↔
CN76#1:shall be between 4.5V~1.0V
The voltage of MAIN PCB CN30#8↔
CN76#1:shall be between 4.5V~1.0V
Voltage of MAIN PCB CN76-4 Orange ↔ 1
Gray shall be between 7V~12V
After replacing ice maker, check the operation
by turning the appliance ON again.
After replacing ice maker, check the operation
by turning the appliance ON again.
After separating MAIN PCB CN70,CN71 from PCB, the resistance value
between CN70 White ↔ CN71 Orange shall be 110(441) ohm ± 7%.
(Resistant value is varied by the input power)
0 Ohm : heater short, ∞ Ohm : wire / bimetal Open.
The voltage of MAIN PCB
CN31#1↔#4 : shall be between 4.5V~1.0V.
The voltage of MAIN PCB CN30#3↔
CN76#1:shall be between 4.5V~1.0V
The voltage of MAIN PCB
CN30#4↔CN76#1:shall be between 4.5V~1.0V
Voltage of MAIN PCB CN76-3 Yellow ↔ 1
Gray shall be between 7V~12V.
Voltage of MAIN PCB CN76-5 Sky-blue ↔ 1
Gray shall be between 7V~12V.
The voltage of MAIN PCB
CN31#3 CN76#1:shall be between 4.5V~1.0V
↔
After separating MAIN PCB CN70,CN71 from PCB, resistant value
between CN70 brown ↔ CN71 Orange shall be 55(220) ohm ±
7%. (Resistant value is varied by input power)
0 Ohm : heater short, ∞ Ohm : wire / bimetal Open.
Voltage of MAIN PCB CN76-2 Black ↔ CN76-1 Gray : shall be
between 6V~12V.
After separating MAIN PCB CN91from PCB, the resistant value
between Black ↔ brown wire shall be 145 ohm ± 7%.
0 Ohm : heater short, ∞ Ohm : wire / bimetal Open.
The voltage of MAIN PCB
CN30#9 ↔ CN76#1 : shall be between 4.5V~1.0V.
After separating MAIN PCB CN79 from PCB, the resistant value
between pink ↔ white wire shall be 72 ohm ± 7%.
Check : 0 Ohm → heater short, ∞Ohm → wire / bimetal Open.
Actually, If there is not a problem, it is desirable to
replace Main and Panel PCB With the oscilloscope
after a cable problem confirming.
After separating MAIN PCB CN79 from PCB, the resistant value
between blue ↔ white wire shall be 72 ohm ± 7%.
Check : 0 Ohm → heater short, ∞Ohm → wire / bimetal Open.