Service manual

20
9-5. Trouble criterion of main parts
MSZ-FA25VA MSZ-FA35VA
Part name FigureCheck method and criterion
Measure the resistance with a tester.
Room temperature
thermistor(RT11)
Indoor coil thermistor
(RT12(MAIN), RT13(SUB))
Horizontal vane 
motor(MV1)

Normal
BRN-other one
Measure the resistance between the terminals with a tester.
(Part temperature 10°C ~ 30°C)
235 " ~ 255 "
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°C ~ 30°C)
Front panel 
driving motor
(MP)

Normal
Measure the resistance between the terminals with a tester.
(Part temperature 10°C ~ 30°C)
94 " ~ 102 "
i-see Sensor(RR)
Turn the power ON(i-see Sensor is energized) with the aluminum block part 
on the i-see Sensor P.C. board (upper part of i-see Sensor) covered with black 
vinyl tape, then measure the voltage between connector terminals of i-see 
Sensor using tester.
(Part temperature 10 ~ 40°C)
282 " ~ 306 "
Normal range

2(-)
- 4(+)
1(+) - 2(-)
1.874 ~ 3.387V DC
1.010 ~ 1.420V DC
i-see Sensor 
connector terminals
NOTE: Pay attention to static electricity.
Indoor fan motor(MF)
Check 9-6. A.
PLASMA DEODORIZING/
PLASMA AIR PURIFYING 
power
Check 9-6. F or G.
Color of the lead wire
BRN-other one
Color of the lead wire
BRN-other one
Refer to 9-7. "Test point diagram and voltage", "Indoor electronic control P.C. 
board", the chart of thermistor.
RED
YLW
BRN
ORN
GRN
ROTOR
RED
YLW
BRN
ORN
GRN
ROTOR
RED
YLW
BRN
ORN
GRN
ROTOR
i-see Sensor
Connector
Black
vinyl tape
Aluminum block
i-see Sensor P.C. board
w The aluminum block
part is covered with
black vinyl tape.
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