Mitsubishi Electric MSZ-FE18NA, Руководство по обслуживанию

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26
L AREA R POWER
No.
Abnormal
point
Operation indicator lamp Symptom Condition Remedy
1
MXZ type
Operation
mode
setting
MSZ-FE09/12NA
POWER lamp is lighted.
AREA lamps
fl ash.
2.5-second OFF
Outdoor unit
operates but
indoor unit does
not operate.
The operation mode of the each indoor unit
is differently set to COOL (includes DRY) and
HEAT at the same time, the operation mode
of the indoor unit that has operated at
fi rst has
the priority.
Unify the operation mode.
Refer to outdoor unit service
manual. •
9-5. TROUBLE CRITERION OF MAIN PARTS
MSZ-FE09NA MSZ-FE12NA MSZ-FE18NA
Part name Check method and criterion Figure
Room temperature therm-
istor (RT11)
Indoor coil thermistor
(RT12, RT13)
Measure the resistance with a tester.
Refer to 9-7. "Test point diagram and voltage", "Indoor electronic control P.C.
board", the chart of thermistor.
Indoor fan motor (MF) Check 9-6. .
Horizontal vane motor
(MV1)
Vertical vane motor
(MV2)
i-see Sensor motor
(MT) ( MSZ-FE09/12NA )
Measure the resistance between the terminals with a tester.
(Part temperature 50 ~ 86°F (10 ~ 30°C))
Color of the lead wire Normal
Horizontal vane motor (MV1)
( MSZ-FE09/12NA )
BRN-other one
( MSZ-FE18NA )
RED-BLK
313 ~ 375 Ω
Vertical vane motor (MV2) 268 ~ 322 Ω
i-see Sensor motor (MT)
( MSZ-FE09/12NA )
223 ~ 268 Ω
MSZ-FE09/12NA
MSZ-FE18NA
i-see Sensor (RR)
( MSZ-FE09/12NA )
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 50 ~ 104°F (10 ~ 40°C))
i-see Sensor connector terminals Normal range
(GND) - (+) 1.874 ~ 3.387 VDC
(+) - (GND) 1.010 ~ 1.420 VDC
NOTE : Pay attention to static electricity.
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
4
3
2(GND)
1
OPERATION INDICATOR
BLK
BLK
RED
BLK BLK
ROTOR