Mitsubishi Electric Mr.Slim MSY-D30NA, Service Manual

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26
OPERATION INDICATOR
No.
Abnormal
point
Operation indicator lamp Symptom Condition Remedy
1
MXZ type
Operation
mode
setting
Upper lamp lights and lower lamp fl ashes.
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-GE06NA MSZ-GE09NA MSZ-GE12NA MSZ-GE15NA MSZ-GE18NA MSZ-GE24NA
MSY-GE09NA MSY-GE12NA MSY-GE15NA MSY-GE18NA MSY-GE24NA
Part name Check method and criterion Figure
Room temperature
thermistor (RT11)
Indoor coil thermistor
(RT12, RT13)
Measure the resistance with a tester.
Refer to 9-7. "Test point diagram and voltage", 2 or 3. "Indoor electronic
control P.C. board", for the chart of thermistor.
Indoor fan motor (MF) Check 9-6.
MSZ-GE06/09/12/15/18NA
MSY-GE09/12/15/18NA
Vane motor (MV)
Measure the resistance between the terminals with a tester.
(Temperature: 50 - 86°F (10 - 30°C))
Color of the lead wire Normal
RED - BLK 223 - 268 Ω
MSZ-GE24NA
MSY-GE24NA
Horizontal vane motor
(MV1)
Vertical vane motor
(MV2)
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)
RED-BLK
313 ~ 375 Ω
Vertical vane motor (MV2) 268 ~ 322 Ω
BLK
BLK
RED
BLK BLK
ROTOR
BLK
BLK
RED
BLK BLK
ROTOR
ROTOR
OBH548D