Trouble Criterion Of Main Parts - Mitsubishi MSZ-GE22VA Service Manual

OPERATION INDICATOR
Abnormal
No. Operation indicator lamp
point
All lamps fl ash at the same time.
Attachment
0.5-second ON
1 of the hori-
zontal vane
0.5-second OFF
OPERATION INDICATOR
Abnormal
No. Operation indicator lamp
point
Upper lamp lights and lower lamp fl ashes.
MXZ type
Operation
1
mode
2.5-second OFF
setting

10-5. TROUBLE CRITERION OF MAIN PARTS

MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA
MSZ-GE60VA MSZ-GE71VA
Part name
Room temperature
thermistor (RT11)
Indoor coil thermistor
(RT12, RT13)
Indoor fan motor (MF)
MSZ-GE22VA MSZ-GE25VA
MSZ-GE35VA MSZ-GE42VA
MSZ-GE50VA
Vane motor (MV)
MSZ-GE60VA
MSZ-GE71VA
Horizontal vane motor
(MV1)
Vertical vane motor
(MV2)
Symptom
Indoor unit and
outdoor unit do
not operate.
Symptom
Outdoor unit
operates but
indoor unit does
not operate.
Check method and criterion
Measure the resistance with a tester.
Refer to 10-7. "Test point diagram and voltage", "2 or 3. 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 tester.
(Temperature: 10 - 30°C)
Color of the lead wire
RED - BLK
Measure the resistance between the terminals with a tester.
(Temperature: 10 - 30°C)
Horizontal vane motor (MV1)
Vertical vane motor (MV2)
Condition
The electricity is not conducted to the inter-
lock 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 fi rst has
the priority.
Normal
223 - 268 Ω
Color of the lead wire
313 ~ 375 Ω
RED-BLK
268 ~ 322 Ω
26
Correspondence
• Refer to 10-6. "Check of
installation of the horizontal
vane".
Correspondence
• Unify the operation mode.
Refer to outdoor unit service
manual.
Figure
BLK
ROTOR
BLK
RED
BLK
BLK
ROTOR
BLK
Normal
RED
BLK
BLK
BLK