Mitsubishi Electric MSZ-RW25VG Service Manual page 37

OPERATION INDICATOR
(POWER)
(AIR PURIFYING)
Abnormal
No. Operation indicator lamp
point
• AIR PURIFYING lamp blinks.
MXZ type
Operation
1
2.5-second OFF
mode
setting
• POWER lamp is lit.
OPERATION INDICATOR
(POWER)
(AIR PURIFYING)
Abnormal
No. Operation indicator lamp
point
AIR PURIFYING lamp blinks.
AIR
PURIFYING 2.5-second OFF
1
power
control
10-5. TROUBLESHOOTING CRITERION OF MAIN PARTS
MSZ-RW25VG
MSZ-RW35VG
MSZ-RW50VG
Part name
Room temperature
thermistor (RT11)
Indoor coil thermistor
(RT12, RT13)
Indoor fan motor (MF)
Vane motor (MV1)
(HORIZONTAL)
Vane motor (MV2)
(VERTICAL)
i-see SENSOR MOTOR
(MT)
AIR PURIFYING power
OBH902A
Lit
Blinking
Not lit
Symptom
Outdoor unit
operates but
indoor unit does
not operate.
Lit
Blinking
Not lit
Symptom
Indoor unit and
outdoor unit do
not operate.
Check method and criterion
Measure the resistance with a tester.
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 tester.
(Temperature: 10 - 30°C)
Color of the lead wire
RED - YLW
Measure the resistance between the terminals with a tester.
(Temperature: 10 - 30°C)
Color of the lead wire
RED - YLW
Measure the resistance between the terminals with a tester.
(Temperature: 10 - 30°C)
Color of the lead wire
RED - BRN
Check 10-6. .
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.
Condition
When AIR PURIFYING power cannot be
turned OFF even if the AIR PURIFYING
operation is turned OFF by remote controller.
Normal
262 - 328 Ω
Normal
219 - 273 Ω
Normal
262 - 328 Ω
37
Remedy
• Unify the operation mode.
Refer to outdoor unit service
manual.
Remedy
• Refer to 10-6. "Check of AIR
PURIFYING power".
Figure
YLW
ROTOR
YLW
RED
YLW YLW
YLW
ROTOR
YLW
RED
YLW
YLW
BRN
ROTOR
BRN
RED
BRN BRN