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OPERATION INDICATOR
Abnormal
No.
Operation indicator lamp
point
Left lamp lights and right lamp blinks.
MXZ type
Operation
1
mode
2.5-second OFF
setting
10-5. TROUBLE CRITERION OF MAIN PARTS
Part name
Room temperature
thermistor (RT11)
Indoor coil thermistor
(RT12, RT13)
Indoor fan motor (MF)
Vane motor (MV)
*SKY=SKY BLUE
OBH849G
Lit
Blinking
Not lit
Symptom
Outdoor unit
operates but
indoor unit does
not operate.
Check method and criterion
Measure the resistance with a multimeter.
Refer to 10-7. "Test point diagram and voltage", "Indoor electronic control
P.C. board", for the chart of thermistor.
Check 10-6.
"Check of indoor fan motor".
Measure the resistance between the terminals with a multimeter.
(Temperature: 10 - 30°C)
Color of the lead wire
RED-SKY
Condition
The operation mode of the each indoor unit is
differently set to COOL (includes DRY, FAN)
and HEAT at the same time, the operation
mode of the indoor unit that has operated at
first has the priority.
Normal
262 ~ 328 Ω
28
Remedy
• Unify the operation mode.
Refer to outdoor unit service
manual.
Figure
SKY
ROTOR
SKY
RED
SKY
SKY
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