Mitsubishi Electric MR-385S-W-A Service Manual page 16

Components/
Part Name
Refrigerator
fan motor
Defrost
Heater
Resistance measured under
the ambient temperature from
-50: to +50:
1. 200" to 500k"
............normal
2. Out of the above range
............abnormal
Thermistor
Thermistor Check Procedure
Thermistor resistance will vary
with the change of temperature.
Take the temperature around the thermistor,
and then measure resistance using a tester.
The relation of resistance and temperature is as shown on
the above graph.
Check Method and Criterion
Model
Measure the resistance with a tester.
(Ambient temperature:Room temperature 15
Normal
560+ 10% ( Ω )
Rated input
Operation method
Measure the resistance with a tester.
(Ambient temperature:Room temperature 15
Normal
384 (Approx.)
Ω
(kΩ)
Thermistor resistance valves against
temperature
35
30
25
Freezer
thermistor,
20
Defrost
thermistor
15
10
5
0
-20 -10
- 15 -
UDVH15MA1H
Abnormal(faulty)
Short (0Ω)
150 W
Power ON after defrosting
o
(14 + 1.5 C or more)
Abnormal (faulty)
Opened ( ∞ Ω )
Outside air thermistor
Inner
thermistor
0 10
20 30
Temperature
Parts Mounted Position
In fan grill of the
freezer compartment.
o o
C ~ 25 C)
In the drip tray under
the evaporator of the
freezer compartment
o o
C ~ 25 C)
Defrost thermistor
at the muffler
of evaporator
in freezer compartment.
Freezer thermistor at
fan grille of freezer
compartment.
Out air thermistor
under hinge cover