Service manual

16
OPERATION INDICATOR
Not lighted
Blinking
Lighted
OPERATION INDICATOR
Not lighted
Blinking
Lighted
No.
1
SymptomOperation indicator lamp
Condition
Correspondence
Abnormal
point
0.5-second ON
0.5-second OFF
The electricity is not conducted to the interlock
switch (Fan) of the horizontal vane.
• Refer to 9-6.E "Check of
installation of the horizontal
vane".
Indoor unit
and outdoor
unit do not
operate.
Attachment
of the
horizontal
vane
All lamps flash at the same time.
No.
SymptomOperation indicator lamp
Condition
Correspondence
Abnormal
point
1
MXZ type
Operation
mode
setting
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
first has the priority.
• Unify the operation mode.
Refer to outdoor unit service
manual.
2.5-second OFF
Right lamp flash
· Flashing of OPERATION INDICATOR lamp (all lamps) indicates abnormality.
· Flashing of OPERATION INDICATOR lamp (right-hand side lamp) indicates
abnormality.
· OPERATION INDICATOR lamp (left-hand side lamp) is lighted.
9-5. Trouble criterion of main parts
MSZ-GA22VA MSZ-GA25VA MSZ-GA35VA
Part name FigureCheck method and criterion
Indoor fan motor(MF)
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.
Room temperature
thermistor(RT11)
Indoor coil thermistor
(RT12(MAIN), RT13(SUB))
Horizontal vane
motor(MV)
Normal
BRN-other one
Measure the resistance between the terminals with a tester.
(Part temperature 10°C ~ 30°C)
235 " ~ 255 "
Color of the lead wire
Check 9-6. A.
RED
YLW
BRN
ORN
GRN
ROTOR
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