Mitsubishi Electric MSZ-FA25VA Service Manual page 20

Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy
9-5. Trouble criterion of main parts
MSZ-FA25VA - MSZ-FA35VA -
E1
Part name
Room temperature
thermistor(RT11)
Indoor coil thermistor
(RT12(MAIN), RT13(SUB))
Indoor fan motor(MF)
Horizontal vane
motor(MV1)
Vertical vane
motor(MV2)
i-see Sensor
motor(MT)
Front panel
driving motor
(MP)
i-see Sensor(RR)
PLASMA DEODORIZING/
PLASMA AIR PURIFYING
power
E1
Check method and criterion
Measure the resistance with a tester. (Part temperature 10˚C ~ 30˚C)
Normal
8 k" ~ 20 k"
Check 9-6. A.
Measure the resistance between the terminals with a tester.
(Part temperature 10°C ~ 30°C)
Color of the lead wire Normal
BRN-other one 235 " ~ 255 "
Measure the resistance between the terminals with a tester.
(Part temperature 10°C ~ 30°C)
Color of the lead wire Normal
BRN-other one 282 " ~ 306 "
Measure the resistance between the terminals with a tester.
(Part temperature 10°C ~ 30°C)
Color of the lead wire
Normal
94 " ~ 102 "
BRN-other one
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)
Aluminum block
Connector i-see Sensor P.C. board
i-see Sensor
Normal range
connector terminals
2(-) - 4(+)
1.874 ~ 3.387V DC
1(+) - 2(-)
1.010 ~ 1.420V DC
NOTE: Pay attention to static electricity.
Check 9-6. F or G.
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Abnormal
Open or short-circuit
Abnormal
Open or short-circuit
Abnormal
Open or short-circuit
Abnormal
Open or short-circuit
w The aluminum block
part is covered with
i-see Sensor
black vinyl tape.
Abnormal
Below 1.874 or above 3.387V DC
Below 1.010 or above 1.420V DC
20
Figure
RED
ROTOR
YLW
BRN
ORN GRN
RED
ROTOR
YLW
BRN
ORN GRN
RED
ROTOR
YLW
BRN
ORN GRN
Black
vinyl tape