Component/
Part Name
Check Method and Criterion
Part Mounted
Position
42
Thermistor
Measure the resistance with a tester according to the following graph.
(Thermistor resistance values against temperature.)
• Resistance measured under the ambient temperature from -50 to +50
1. 200
to 500 k
•••••••••••••••••Normal
2. Out of the above range •••••••••Abnormal
Thermistor Check Procedure
• Thermistor resistance value will vary
with the change of temperature.
• Take the temperature around the ther-
mistor, and then measure thermistor
resistance using a tester.
The relation between resistance and tem-
perature is shown on the left.
0
0
5
10
15
20
25
30
35
10
20
30
-10
-20
Thermistor resistance
values against temperature
Outside air thermistor
(In the operation
P.C. board)
Resistance values
Temperature
Inner
thermistor
Refrigerator
compartment
Chilled
Freezer
compartment
Defrosting
Versa
compartment
Ice making
compartment
Vegetable
compartment
Troubleshooting with self-check
(1) If the self-check indicates the abnor-
mality of the thermistor when the
power is turned on, measure the
resistance of the thermistor.
• If there is a open circuit in the ther-
mistor, there may be poor contact
of the connector or a failure in the
element of the thermistor.
(2) When the self-check indicates the
abnormality of the thermistor a few
seconds after the power is turned
on, check the contact of the connec-
tor.
Defrost
thermistor
Evaporator
Ice making
thermistor,
Versa compart-
ment thermis-
tor, and Freezer
compartment
thermistor
In the fan grille
of each compart-
ment
Vegetable com-
partment
In the back
of partitions
between
Freezing and
Vegetable com-
partments
Refrigerator
compartment
thermistor
On the back of
the refrigerator
control panel
Chilled
On the lower
part of the refrig-
erator control
panel
Outside air
thermistor
In the operation
P.C. board
Photosynthesis LED (2 pieces)
LED lighting
duration
Always
Abnormal
criterion
Means
Check with the diode range(
) of tester.
(Use a tester equipped with diode range.)
The needle in the tester does not swing when measuring the resistance
across the terminals 3 (+) and 1 (-) and the terminals 3 (+) and 2 (-) in the
5 pin wire to wire connector in the ceiling of the vegetable compartment.
Make sure that the needle in the tester does not also swing after
the polarities are reversed.
LEDs light in following
colors at the above timing.
Photosynthesis LED: Orange
2
1
LED
Use a tester equipped
with a diode range
Photosynthesis LED
Vegetable com-
partment LED
On the ceiling
vegetable com-
partment
(Vegetable
compartment
LED board)
OAH162