Reference No. 4) Check method of various sensor
After disconnect the connector from MAIN PCB,
measure the resistance value at the sensor
terminals as follows.
1. Measure the resistance value between the
Freezer Sensor CN30
and .
2. Measure the resistance value between the
Refrigerator Sensor CN31
and .
3. Measure the resistance value between the
F-Defrost Sensor CN30
and .
4. Measure the resistance value between the
R-Defrost Sensor CN31
and .
5. Measure the resistance value between the
Ambient Sensor CN32
and .
6. Measure the resistance value between the
Ice-Maker Sensor CN90
and .
7. Compare the resulted value with the
temperature of each sensor and the conversion
table of the resistance and voltage of sensor
related according to the temperature described
in the Reference No.8 of this manual and
then, judge whether there is any problem.
When the value is resulted to be
or 0 ,
check carefully the connected state of the wires.
Load Measuring terminals Judgement
F-Defrost heater
CN70 and CN71
means OPEN fault of connection and Thermal-Fuse.
R-Defrost heater
CN70 and CN71
means OPEN fault of connection and Thermal-Fuse.
F-Fan Motor
CN70 and CN71
means OPEN fault of wire connection and Thermal COIL solid wire.
R-Fan Motor
CN70 and CN71
means OPEN fault of wire connection and Thermal COIL solid wire.
Reference No. 3) Check of LOAD
After disconnect of the power cord from
power consent and of the connectors, CN70,
71 and 72 from MAIN PCB, measure the
followings.
1. Measure the resistance value between the
load terminal and terminal as follows to
judge the abnormality of load and wire
connection.
Red
Gray
F-Defrost heater
Measure after disassembly
R-Defrost heater
COMP & FAN
F-FAN
R-FAN
F-ROOM LAMP
Yellow
Freezer sensor
F-Defrost sensor
Blue
Gray
Violet
White
White
White
Refrigerator
sensor
R-Defrost
sensor
Ambient
Sensor
Measure after disassembly
Ice-Maker
sensor
On check of load according to the above measuring method, find out the measuring terminals at load
ends using the circuit diagram and perform the check.
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