Mitsubishi Electric MSZ-FH25VE - E1 Service Manual page 27

OPERATION INDICATOR
(POWER)
(AIR PURIFYING)
Abnormal
No. Operation indicator lamp
point
• AIR PURIFYING lamp fl ash.
MXZ type
Operation
1
2.5-second OFF
mode
setting
• POWER lamp is lighted.
OPERATION INDICATOR
(POWER)
(AIR PURIFYING)
Abnormal
No. Operation indicator lamp
point
AIR PURIFYING lamp fl ashes.
AIR
PURIFYING
2.5-second OFF
1
power
control
10-5. TROUBLE CRITERION OF MAIN PARTS
MSZ-FH25VE MSZ-FH35VE
MSZ-FH25VE2 MSZ-FH35VE2 MSZ-FH50VE2
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
OBH623D
Lighted
Blinking
Not lighted
Symptom
Outdoor unit
operates but
indoor unit does
not operate.
Lighted
Blinking
Not lighted
Symptom
Indoor unit and
outdoor unit do
not operate.
MSZ-FH50VE
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 - SKY
Measure the resistance between the terminals with a tester.
(Temperature: 10 - 30°C)
Color of the lead wire
RED - SKY
Measure the resistance between the terminals with a tester.
(Temperature: 10 - 30°C)
Color of the lead wire
RED - BLK
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
fi rst 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
27
Remedy
• Unify the operation mode.
Refer to outdoor unit service
manual.
Remedy
• Refer to 10-6. "Check of AIR
PURIFYING power".
Figure
SKY
ROTOR
SKY
RED
SKY SKY
SKY
ROTOR
SKY
RED
SKY SKY
BLK
ROTOR
BLK
RED
BLK BLK