SJGF60XT
23
INSPECTION FLOWCHART AND REPAIR ITEMS
4.
During check of the PWB circuits, use thorough caution not to get electric shock.
•
To check resistance of electric parts, be sure to disconnect the power supply plug. (Turn OFF the power supply.)
•
Problem
Self-diagnosis display
Check/inspection point
Action on error detection
Refrigerator does not
cool at all
(The compressor
does not work.)
F-thermistor fault
1) Connector insertion check (Main PWB, intermediate
connector)
2) Thermistor resistance check (Check the value in the
thermistor characteristic table.)
3) If the above check results are normal:
1) Correct the installation.
2) Replace the thermistor.
3) Replace the main PWB.
Inverter wiring error
1) Inverter PWB – compressor wiring check (Connector
insertion/wire break check)
2) If the above check results are normal:
1) Correct the installation, or replace the wiring.
2) Replace the inverter PWB or main PWB.
Inverter communication error
1) Inverter PWB – main PWB wiring check, Protector check
(Connector insertion/wire break check)
2) If the above check results are normal:
1) Correct the installation, or replace the wiring/protector.
2) Replace the inverter PWB or main PWB.
Inverter overload protection
1) Is there any problem about the refrigerator heat radiation
space?
2) Compressor wound wire resistance check (Refer to page 13)
3) Refrigerant valve operation check
4) If the above check results are normal:
1) Improve the refrigerator installation condition.
2) Replace the compressor.
3) Replace the refrigerant valve or main PWB.
4) Replace the inverter PWB or main PWB.
Inverter rotation speed abnormal drop
Inverter startup fault
Inverter overcurrent
Inverter position detection fault
1) Compressor wound wire resistance check (Refer to page 13)
2) Refrigerant valve operation check
3) If the above check results are normal:
1) Replace the compressor.
2) Replace the refrigerant valve or main PWB.
3) Replace the inverter PWB or main PWB.
F-thermistor high-temperature
1) Connector insertion check (Main PWB, intermediate
connector)
2) Thermistor resistance check (Check the value in the
thermistor characteristic table.)
3) Compressor/freezing cycle check
4) If the above check results are normal:
1) Correct the installation.
2) Replace the thermistor.
3) Replace the compressor/freezing cycle.
4) Replace the inverter PWB or main PWB.
Cooling performance
is in suf
fi
cient
(The compressor is
working.)
DEF thermistor fault
External air temperature thermistor fault
1) Connector insertion check (Main PWB, intermediate
connector)
2) Thermistor resistance check (Check the value in the
thermistor characteristic table.)
3) If the above check results are normal:
1) Correct the installation.
2) Replace the thermistor.
3) Replace the main PWB.
Cooling fan motor fault
Condenser fan motor fault
1) Connector insertion check (Main PWB, intermediate
connector)
2) Fan motor installation/condition/operation check
3) If the above check results are normal:
1) Correct the installation.
2) Correct the installation, or replace the fan motor.
3) Replace the main PWB.
Defrosting fault
1) Connector insertion check (Main PWB, intermediate
connector)
2) Defrosting heater resistance check (Check the value in the
functional part speci
fi
cations.)
3) If the above check results are normal:
1) Correct the installation.
2) Replace the defrosting heater or temperature fuse.
3) Replace the main PWB.
External air temperature information
Door open information
1) Refrigerator installation/operating condition check
(Installation environmental temperature, Door opening/closing
frequency)
1) Improve the installation/operating condition.
F-thermistor high temperature
No self-diagnosis fault
1) F-thermistor connector insertion check (Main PWB,
intermediate connector)
2) F-thermistor resistance check (Check the value in the
thermistor characteristic table.)
3) Cooling fan motor operation check (Rotation speed is low.)
4) Condenser fan motor operation check (Rotation speed is
low.)
5) Compressor and freezing cycle check
6) Door packing inspection and installation/operating conditions
(Installation environmental temperature, door opening/closing
frequency, too much stuffed food, etc.)
7) If the above check results are normal:
1) Correct the installation.
2) Replace the thermistor.
3) Replace the cooling fan motor.
4) Replace the condenser fan motor.
5) Replace the compressor/freezing cycle.
6) Improve the packing mounting/installation/operating
condition.
7) Replace the inverter PWB or main PWB.
Freezer compartment
is too much cooled.
F-thermistor fault
1) Connector insertion check (Main PWB, intermediate
connector)
2) Thermistor resistance check (Check the value in the
thermistor characteristic table.)
3) If the above check results are normal:
1) Correct the installation.
2) Replace the thermistor.
3) Replace the main PWB.
