Mitsubishi Electric MSZ-FD25VA User manual

CONTENTS
1. TECHNICAL CHANGES ····································3
2. PART NAMES AND FUNCTIONS······················4
3. SPECIFICATION·················································5
4. NOISE CRITERIA CURVES·······························6
5. OUTLINES AND DIMENSIONS ·························7
6. WIRING DIAGRAM ············································7
7. REFRIGERANT SYSTEM DIAGRAM················8
8. SERVICE FUNCTIONS ······································9
9. MICROPROCESSOR CONTROL ····················11
10. TROUBLESHOOTING······································20
11. DISASSEMBLY INSTRUCTIONS·····················36
MSZ-FD25VA -
MSZ-FD25VAS -
MSZ-FD35VA -
MSZ-FD35VAS - E1
E1
E1
E1
SPLIT-TYPE, HEAT PUMPAIR CONDITIONERS
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
Outdoor unit service manual
MUZ-FD·VA Series(OBH489)
MXZ-A·VA Series (OB377)
MXZ-8A140A (OC316)
SERVICE MANUAL
Wireless type
Models
No. OBH488
INDOOR UNIT
PARTS CATALOG (OBB488)
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1TECHNICAL CHANGES
MSZ-FD25VA - MSZ-FD25VAS -
MSZ-FD35VA - MSZ-FD35VAS - E1E1
E1E1
1. New model
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2PART NAMES AND FUNCTIONS
MSZ-FD25VA
MSZ-FD25VAS
MSZ-FD35VA
MSZ-FD35VAS
Air outlet
Vertical vane
Air filter
Front panel
Horizontal vane
Remote controller
AREA lamp indicate AREA setting
In AREA setting, the horizontal air flow
direction changes automatically according
to the detection of i-see Sensor which detects
the floor/ wall temperature to air-condition
the room evenly.
i-see control operation
i-see sensor constantly measure
floor/wall temperature to automatically
adjust to the set temperature by
estimating the temperature
actually perceived by a
person inside the room
("sensible temperature").
Operation Indicator
lamp Remote control
receiving section
Emergency operation
switch
Fan
Fan guard
i-see sensor
Heat exchanger
Air inlet
Plasma anti-allergy
enzyme filter
Plasma electrode
unit
Plasma deodorizing
filter
AREA lamp POWER lamp CLEAN lamp PLASMA lamp
ACCESSORIES
1
2
3
4
5
6
7
Installation plate
Installation plate fixing screw 4 o25 mm
Remote controller holder
Fixing screw for 33.5 o1.6 mm (Black)
Battery (AAA) for remote controller
Wireless remote controller
Felt tape (Used for left or left-rear piping)
1
5
1
2
2
1
1
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5
SPECIFICATION
3
Specifications and rating conditions of main electric parts
NOTE : Test conditions are based on ISO 5151
Cooling : Indoor Dry-bulb temperature 27 :Wet-bulb temperature 19 :
Outdoor Dry-bulb temperature 35 :
Heating : Indoor Dry-bulb temperature 20 :
Outdoor Dry-bulb temperature 7 :Wet-bulb temperature 6 :
Refrigerant piping length (one way): 5 m
✽1 Measured under rated operating frequency.
MSZ-FD25VA MSZ-FD35VA
Single phase
230 V, 50 Hz
RCOJ40-GF
798O295O257
12
4
672
516/378/276
1,190
950/740/580
4
KM08A
Indoor model
Power supply
Power input ✽1
Running current ✽1
Fan motor current ✽1
Fan motor model
Dimensions WOHOD
Weight
Color
Air direction
Air flow
(Super High)
Air flow
(High/Med./Low)
Sound level
(Super High)
Sound level
(High/Med./Low)
Fan speed
(Super High)
Fan speed
(High/Med./Low)
Fan speed regulator
Remote controller model
W
A
A
mm
kg
K/h
K/h
dB(A)
dB(A)
rpm
rpm
Electrical data
Special remarks
Cooling
Heating
Cooling
Heating
Cooling
Heating
Cooling
Heating
Cooling
Heating
Cooling
Heating
Cooling
Heating
Cooling
Heating
Cooling
Heating
MSZ-FD25VAS MSZ-FD35VAS
26
31
0.25
0.30
0.25
0.30
726
552/402/270
42
36/29/20
1,270
1,010/780/570
28
33
0.27
0.32
0.27
0.32
750
552/402/282
43
36/29/21
1,300
1,010/780/590
PURE WHITE SILVER PURE WHITE SILVER
250 V 3.15 A
MP20Z 12 VDC 300 "(at 25 ˚C)
MSFBC20C29 12 VDC 350 "(at 25 ˚C)
MSBPC20M11 12 VDC 300 "(at 25 ˚C)
S10K320E3K1
A2TPMI 23A FOV50 OBA060 P8L1 J4S
3P
Fuse
i-see Sensor motor
Horizontal vane motor
Vertical vane motor
Varistor
i-see Sensor
Terminal block
(F11)
(MT)
(MV1)
(MV2)
(NR11)
(RR)
(TB)
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4NOISE CRITERIA CURVES
MSZ-FD25VA
MSZ-FD25VAS
INDOOR UNIT WALL
MICROPHONE
0.8 m
1 m
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
COOLING
FUNCTION SPL(dB(A)) LINE
Super High
FAN SPEED
HEATING
Test conditions
Cooling : Dry-bulb temperature 27 : Wet-bulb temperature 19 :
Heating : Dry-bulb temperature 20 :
43
43
NC-10
MSZ-FD35VA
MSZ-FD35VAS
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
COOLING
FUNCTION SPL(dB(A)) LINE
Super High
FAN SPEED
HEATING 42
43
NC-10
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225 225 64
64
155155
345
54 330 69
42
211.5
3
253
231.5
41 212.5
254
43
69
7
43
85
97
295
21.5
56
55 55688
100
785
798 6.5
47
Wall hole [65
11 X 26 Oblong hole 11 X 20 Oblong hole
Indoor unit
Installation plate
5257 Installation plate
Piping
Drain hose
Air in
Air out
19
159
58
Piping
Insulation
[35 O.D
Liquid line
[6.35 - 0.5 m (Flared connection [6.35)
Gas line
[9.52 - 0.43 m (Flared connection [9.52)
Drain hose
Insulation [28 O.D Connected part [16 O.D
7
OUTLINES AND DIMENSIONS
5
Unit : mm
MSZ-FD25VA
MSZ-FD25VAS
MSZ-FD35VA
MSZ-FD35VAS
6WIRING DIAGRAM
MSZ-FD25VA MSZ-FD25VAS MSZ-FD35VA MSZ-FD35VAS
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7REFRIGERANT SYSTEM DIAGRAM
MSZ-FD25VA
MSZ-FD25VAS
MSZ-FD35VA
MSZ-FD35VAS
Indoor
heat
exchanger
Flared connection
Room temperature
thermistor
RT11
Flared connection
Refrigerant pipe [9.52
(with heat insulator)
Refrigerant pipe [6.35
(with heat insulator)
Indoor coil
thermistor
RT12 (main)
Indoor coil
thermistor
RT13 (sub)
Refrigerant flow in cooling
Refrigerant flow in heating
Unit : mm
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SERVICE FUNCTIONS
8
8-2. P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATION
A maximum of 4 indoor units with wireless remote controllers can be used in a room.
In this case, to operate each indoor unit individually by each remote controller, P.C. boards of remote controller must be
modified according to the number of the indoor unit.
8-1. TIMER SHORT MODE
For service, set time can be shortened by short circuit of JPG and JPS on the electronic control P.C. board.
The time will be shortened as follows. (Refer to 10-7.)
Set time : 1-minute ➔ 1-second
Set time : 3-minute ➔ 3-second (It takes 3 minutes for the compressor to start operation. However, the starting time is
shortened by short circuit of JPG and JPS.)
No. 1 unit
No. 2 unit
No. 3 unit
No. 4 unit
1 unit operation
No modification
–
–
–
2 units operation
Same as at left
Solder J1
–
–
3 units operation
Same as at left
Same as at left
Solder J2
–
4 units operation
Same as at left
Same as at left
Same as at left
Solder both J1 and J2
Table 1
How to set the remote controller exclusively for particular indoor unit
After you turn the breaker ON, the first remote controller that sends the signal to the indoor unit will be regarded as the remote
controller for the indoor unit.
The indoor unit only accept the signal from the remote controller that has been assigned to the indoor unit once they are set.
The setting will be cancelled if the breaker is turned OFF, or the power supply is shut down.
Please conduct the above setting once again after the power has restored.
How to modify the remote controller P.C. board
Remove batteries before modification.
The board has a print as shown below :
The P.C. board has the print “J1” and “J2”. Solder “J1” and “J2” according to the number of indoor unit as shown in Table 1.
After modification, press the RESET button.
NOTE : For modification, take out
the batteries and press the
OPERATE/STOP(ON/OFF)
button twice or 3 times at
first.
After modification, put back
the batteries then press
the RESET button.
MSZ-FD25VA
MSZ-FD25VAS
MSZ-FD35VA
MSZ-FD35VAS
J2
J1
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NOTE :
• The operation settings are memorized when 10 seconds have passed after the indoor unit was operated with the remote
controller.
• If main power is turned OFF or a power failure occurs while AUTO START/STOP timer is active, the timer setting is can-
celled.
• If the unit has been OFF with the remote controller before power failure, the auto restart function does not work as the
power button of the remote controller is OFF.
• To prevent breaker OFF due to the rush of starting current, systematize other home appliance not to turn ON at the
same time.
• When some air conditioners are connected to the same supply system, if they are operated before power failure, the
starting current of all the compressors may flow simultaneously at restart.
Therefore, the special counter-measures are required to prevent the main voltage-drop or the rush of the starting current
by adding to the system that allows the units to start one by one.
8-3. AUTO RESTART FUNCTION
When the indoor unit is controlled with the remote controller, the operation mode, the set temperature, and the fan speed
are memorized by the indoor electronic control P.C. board. “AUTO RESTART FUNCTION” automatically starts operation
in the same mode just before the shutoff of the main power.
Operation
1If the main power has been cut, the operation settings remain.
2After the power is restored, the unit restarts automatically according to the memory.
(However, it takes at least 3 minutes for the compressor to start running.)
How to release “AUTO RESTART FUNCTION”
1Turn OFF the main power for the unit.
2Solder the Jumper wire to JR07 on the indoor electronic control
P.C. board. (Refer to 10-7.)
8-4. REMOTE CONTROLLER
Be sure to set the slide switch inside the remote controller to an appropriate position in accordance with the installed
position of the indoor unit. If the switch is not set correctly, the air conditioner may not function properly.
Area Left Center Right
Where is the indoor unit installed in your room?
NOTE:If the indoor unit is installed more than 50 cm away from the side walls, cabinets or other nearby objects, set the slide
switch to the “center”position.
(Left) (Center) (Right)
Slide swich
Position of
the slide
switch
Display on
the remote
controller
Installed at left, if the
distance is not more
than 50 cm.
Installed at right, if the
distance is not more
than 50 cm.
Is the indoor unit in-
stalled at right, left or
center?
JR07
CN151 CN211CN112 CN1R1
CN212
CN1T1
CN1U1
CN130
IC156
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