Mitsubishi MSZ-GE25VA - Trouble Criterion of Main Parts

26
OPERATION INDICATOR
No.
Abnormal
point
Operation indicator lamp Symptom Condition Correspondence
1
Attachment
of the hori-
zontal vane
All lamps fl ash at the same time.
0.5-second ON
0.5-second OFF
Indoor unit and
outdoor unit do
not operate.
The electricity is not conducted to the inter-
lock switch (Fan) of the horizontal vane.
Refer to 10-6. "Check of
installation of the horizontal
vane".
•
OPERATION INDICATOR
No.
Abnormal
point
Operation indicator lamp Symptom Condition Correspondence
1
MXZ type
Operation
mode
setting
Upper lamp lights and lower lamp fl 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 fi rst has
the priority.
Unify the operation mode.
Refer to outdoor unit service
manual.
•
10-5. TROUBLE CRITERION OF MAIN PARTS
MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA
MSZ-GE60VA MSZ-GE71VA
Part name Check method and criterion Figure
Room temperature
thermistor (RT11)
Indoor coil thermistor
(RT12, RT13)
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.
Indoor fan motor (MF)
Check 10-6. "Check of indoor fan motor".
MSZ-GE22VA MSZ-GE25VA
MSZ-GE35VA MSZ-GE42VA
MSZ-GE50VA
Vane motor (MV)
Measure the resistance between the terminals with a tester.
(Temperature: 10 - 30°C)
Color of the lead wire Normal
RED - BLK 223 - 268 Ω
MSZ-GE60VA
MSZ-GE71VA
Horizontal vane motor
(MV1)
Vertical vane motor
(MV2)
Measure the resistance between the terminals with a tester.
(Temperature: 10 - 30°C)
Color of the lead wire Normal
Horizontal vane motor (MV1)
RED-BLK
313 ~ 375 Ω
Vertical vane motor (MV2) 268 ~ 322 Ω
BLK
BLK
RED
BLK
BLK
ROTOR
BLK
BLK
RED
BLK
BLK
ROTOR