Service Manual

28
OPERATION INDICATOR
No.
Abnormal
point
Operation indicator lamp Symptom Condition
Remedy
1
MXZ type
Operation
mode
setting
Upper lamp lights and lower lamp 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 rst has
the priority.
•
Unify the operation mode.
Refer to outdoor unit service
manual.
9-5. TROUBLE CRITERION OF MAIN PARTS
MSZ-GL06NA MSZ-GL09NA MSZ-GL12NA MSZ-GL15NA MSZ-GL18NA MSZ-GL24NA
MSY-GL09NA MSY-GL12NA MSY-GL15NA MSY-GL18NA MSY-GL24NA
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", 1 or 2. "Indoor electronic
control P.C. board", for the chart of thermistor.
Indoor fan motor (MF) Check 9-6.
MSZ-GL06/09/12/15NA
MSY-GL09/12/15NA
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-GL18/24NA
MSY-GL18/24NA
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
MSZ-GL18NA
Horizontal vane motor (MV1)
RED-BLK
223 - 268 Ω
Vertical vane motor (MV2) 219 - 273 Ω
Color of the lead wire Normal
MSZ-GL24NA
Horizontal vane motor (MV1)
RED-BLK
313 - 375 Ω
Vertical vane motor (MV2) 268 - 322 Ω
BLK
BLK
RED
BLK
BLK
ROTOR
ROTOR
BLK
BLK
RED
BLK
BLK
ROTOR
OBH732C