MITSUBISHI ELECTRIC MSZ-FD25VAS User Manual
Page 27
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10-5. TROUBLE CRITERION OF MAIN PARTS
MSZ-FD25VA MSZ-FD25VAS MSZ-FD35VA MSZ-FD35VAS
Part name
Figure
Check method and criterion
Measure the resistance with a tester.
Refer to 10-7. "Test point diagram and voltage", "Indoor electronic control
P.C. board", the chart of thermistor.
Room temperature
thermistor(RT11)
Indoor coil thermistor
(RT12, RT13)
Horizontal vane
motor(MV1)
Normal
BRN-other one
Measure the resistance between the terminals with a tester.
(Part temperature 10 ~ 30
°
C)
336
"
~ 364
"
Color of the lead wire
Vertical vane
motor(MV2)
i-see Sensor
motor(MT)
Normal
Measure the resistance between the terminals with a tester.
(Part temperature 10 ~ 30
°
C)
i-see Sensor(RR)
Cover the i-see Sensor with black vinyl tape. Then, turn ON the power
supply. (i-see Sensor is energized.) Measure the voltage between
connector terminals of i-see Sensor with a tester.
(Part temperature 10 ~ 40
°
C)
282
"
~ 306
"
Normal range
2
(GND) -
4
(+)
1
(+) -
2
(GND)
1.874 ~ 3.387 VDC
1.010 ~ 1.420 VDC
i-see Sensor
connector terminals
NOTE: Pay attention to static electricity.
Indoor fan motor(MF)
Check 10-6.
A
.
PLASMA electrode unit
Check 10-6.
F
Color of the lead wire
BRN-other one
RED
YLW
BRN
ORN
GRN
ROTOR
RED
YLW
BRN
ORN
GRN
ROTOR
Cover the i-see
Sensor with
black vinyl tape.
i-see Sensor
i-see Sensor P.C. board
Black vinyl tape
connector
w
4
3
2(GND)
1
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