Trouble Criterion Of Main Parts - Mitsubishi Electric MSZ-GA22VA - E1 Service Manual

OPERATION INDICATOR
Abnormal
No. Operation indicator lamp
point
All lamps flash at the same time.
Attachment
0.5-second ON
of the
1
horizontal
vane
0.5-second OFF
OPERATION INDICATOR
Abnormal
No. Operation indicator lamp
point
Right lamp flash
MXZ type
Operation
1
mode
2.5-second OFF
setting

9-5. Trouble criterion of main parts

MSZ-GA22VA MSZ-GA25VA
Part name
Room temperature
thermistor(RT11)
Indoor coil thermistor
(RT12(MAIN), RT13(SUB))
Indoor fan motor(MF)
Horizontal vane
motor(MV)
Lighted · Flashing of OPERATION INDICATOR lamp (all lamps) indicates abnormality.
Blinking
Not lighted
Symptom
Indoor unit
and outdoor
unit do not
operate.
Lighted
· Flashing of OPERATION INDICATOR lamp (right-hand side lamp) indicates
abnormality.
Blinking
· OPERATION INDICATOR lamp (left-hand side lamp) is lighted.
Not lighted
Symptom
Outdoor unit
operates but
indoor unit
does not
operate.
MSZ-GA35VA
Check method and criterion
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.
Check 9-6. A.
Measure the resistance between the terminals with a tester.
(Part temperature 10°C ~ 30°C)
Color of the lead wire
BRN-other one
Condition
The electricity is not conducted to the interlock
switch (Fan) of the horizontal vane.
Condition
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.
Normal
235 " ~ 255 "
16
Correspondence
• Refer to 9-6.E "Check of
installation of the horizontal
vane".
Correspondence
• Unify the operation mode.
Refer to outdoor unit service
manual.
Figure
RED
ROTOR
YLW
BRN
ORN GRN