Subordinate
R Defrost heater
F Defrost heater
Comp
Comp-circulation fan
R-Circulation fan
F-Circulation fan
R-Lamp
F-Lamp
Evaluation of mea-
surement result
Measurement
terminal
CN70 ⑤ -
①
CN70 ⑦ -
①
CN70
⑨
-
①
CN71
⑦ -
①
CN71
⑤ -
①
CN70
③
-
①
CN71
⑨
-
①
CN71
③
-
①
Check for malfunctioning of the subordinate
Reference3
1. Measure resistance between the terminals and
check for malfunctioning of L/W.
1. R sensor measures resistance of CN30
between ②~⑤.
2. Freezer sensor measures resistance of CN30
between ①~⑤.
3. R-defrost sensor measures resistance of CN30 between ④~⑤.
4. F-defrost sensor measures resistance CN30 between ③~⑤.
5. The measurement value above is calculated by comparing the present temperature of the sensor
and the temperature table in specification found in the manual.
* Cut off the power code, separate the housing
from the main PCB CN70,71 and measure the
following.
Inspection of the sensor
Reference4
* Separate the housing connected to main PCB
CN30.
* Resistance value lowers while temperature
rises, because it is a NTC type sensor.
40
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