Mitsubishi Electric MSZ-FT25VG-E1 User manual

INDOOR UNIT
PARTS CATALOG (OBB864)
CONTENTS
1. TECHNICAL CHANGES ······························2
2. PART NAMES AND FUNCTIONS··················3
3. SPECIFICATION ········································4
4. NOISE CRITERIA CURVES··························5
5. OUTLINES AND DIMENSIONS·····················6
6. WIRING DIAGRAM·····································7
7. REFRIGERANT SYSTEM DIAGRAM ··········· 10
8. SERVICE FUNCTIONS······························ 11
9. MICROPROCESSOR CONTROL ················ 13
10. TROUBLESHOOTING ······························· 22
11. DISASSEMBLY INSTRUCTIONS················· 36
SERVICE MANUAL
No. OBH864
Models
MSZ-FT25VG-E1 MSZ-FT25VGK -E1 , ET1 , SC1
MSZ-FT35VG -E1 MSZ-FT35VGK -E1 , ET1 , SC1
MSZ-FT50VG -E1 MSZ-FT50VGK -E1 , ET1 , SC1
Outdoor unit service manual
MUZ-FT∙VG Series (OBH865)

2
Use the specied refrigerant only
Never use any refrigerant other than that specified.
Doing so may cause a burst, an explosion, or fire when the unit is being used, serviced, or disposed of.
Correct refrigerant is specified in the manuals and on the spec labels provided with our products.
We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by
failure to follow the instructions.
TECHNICAL CHANGES
1
MSZ-FT25VG -E1
MSZ-FT35VG - E1
MSZ-FT50VG - E1
MSZ-FT25VGK -E1 , ET1 , SC1
MSZ-FT35VGK -E1 , ET1 , SC1
MSZ-FT50VGK -E1 , ET1 , SC1
1. New model
<Preparation before the repair service>
Prepare the proper tools.
Prepare the proper protectors.
Provide adequate ventilation.
After stopping the operation of the air conditioner, turn off the power-supply breaker and remove the power plug.
Discharge the capacitor before the work involving the electric parts.
<Precautions during the repair service>
Do not perform the work involving the electric parts with wet hands.
Do not pour water into the electric parts.
Do not touch the refrigerant.
Do not touch the hot or cold areas in the refrigeration cycle.
When the repair or the inspection of the circuit needs to be done without turning off the power, exercise great caution not to
touch the live parts.
OBH864

3
Operation indicator lamp
Remote control receiving
section
Spec name plate
Horizontal vane
Air inlet
Air filter
(Air purifying
filter)
Air cleaning filter
(Silver-ionized
air purifier filter)
Front panel
Air outlet
Heat exchanger
Wi-Fi interface
Emergency operation switch
PART NAMES AND FUNCTIONS
2
MSZ-FT25VG MSZ-FT35VG MSZ-FT50VG
MSZ-FT25VGK MSZ-FT35VGK MSZ-FT50VGK
ACCESSORIES
Model
MSZ-FT25VG MSZ-FT25VGK
MSZ-FT35VG MSZ-FT35VGK
MSZ-FT50VG MSZ-FT50VGK
Installation plate 1
Installation plate xing screw 4 × 25 mm 5
Wireless remote controller 1
Felt tape (For left or left-rear piping) 1
Battery (AAA) for remote controller 2
Remote controller
OBH864

4
SPECIFICATION
3
Indoor model MSZ-FT25VG
MSZ-FT25VGK
MSZ-FT35VG
MSZ-FT35VGK
MSZ-FT50VG
MSZ-FT50VGK
Power supply Single phase 230 V, 50 Hz
Electrical data
Power input
1
Cooling W27 30 36
Heating 39 40 47
Running
current 1
Cooling A0.26 0.29 0.33
Heating 0.35 0.36 0.41
Fan motor
Model RC0J30-CV
Current 1Cooling A0.26 0.29 0.33
Heating 0.35 0.36 0.41
Dimensions W × H × D mm 838 × 280 × 229
Weight kg 10
Special remarks
Air direction 5
Airow
Cooling
Super High
m3/h
738 786
High 624 642 720
Med. 492 498 588
Low 354 366 456
Super Low 234 330
Heating
Super High 792 882 930
High 720 810 864
Med. 540 612 684
Low 378 414 504
Super Low 234 330
Sound level
Cooling
Super High
dB(A)
46 47 48
High 41 42 45
Med. 36 40
Low 27 34
Super Low 19 28
Heating
Super High 49 52 54
High 46 49 51
Med. 39 42 45
Low 31 33 36
Super Low 19 28
Fan speed
Cooling
Super High
rpm
1,100 1,150
High 970 990 1,080
Med. 820 830 930
Low 660 670 780
Super Low 500 630
Heating
Super High 1,160 1,260 1,320
High 1,080 1,180 1,240
Med. 880 960 1,040
Low 690 730 840
Super Low 500 630
Fan speed regulator 5
Remote controller model E1 , ET1 : SH20E , SC1 : SH20D
NOTE: Test conditions are based on ISO 5151.
Cooling: Indoor Dry-bulb temperature 27°C Wet-bulb temperature 19°C
Outdoor Dry-bulb temperature 35°C Wet-bulb temperature 24°C
Heating: Indoor Dry-bulb temperature 20°C Wet-bulb temperature 15°C
Outdoor Dry-bulb temperature 7°C Wet-bulb temperature 6°C
1 Measured under rated operating frequency.
Specifications and rated conditions of main electric parts
Model MSZ-FT25/35/50VG
MSZ-FT25/35/50VGK
Fuse (F11) T3.15AL250V
Horizontal vane motor (MV) 12 V DC
Varistor
(NR11) 470 V
Terminal block (TB) 3P
OBH864

5
NOISE CRITERIA CURVES
4
MSZ-FT25VG
MSZ-FT25VGK
MSZ-FT35VG
MSZ-FT35VGK
MSZ-FT50VG
MSZ-FT50VGK
BAND CENTER FREQUENCIES, Hz
63 125 250 500 1000 2000 4000 8000
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
10
20
30
40
50
60
70
80
90
NC-20
NC-70
NC-60
NC-50
NC-40
NC-30
COOLING
FUNCTION SPL(dB(A)) LINE
HEATING
47
52
BAND CENTER FREQUENCIES, Hz
63 125 250 500 1000 2000 4000 8000
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
10
20
30
40
50
60
70
80
90
NC-20
NC-70
NC-60
NC-50
NC-40
NC-30
COOLING
FUNCTION SPL(dB(A)) LINE
HEATING
48
54
BAND CENTER FREQUENCIES, Hz
63 125 250 500 1000 2000 4000 8000
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
10
20
30
40
50
60
70
80
90
NC-20
NC-70
NC-60
NC-50
NC-40
NC-30
COOLING
FUNCTION SPL(dB(A)) LINE
HEATING
46
49
Test conditions
Cooling: Dry-bulb temperature 27°C
Wet-bulb temperature 19°C
Heating: Dry-bulb temperature 20°C
Wet-bulb temperature 15°C
INDOOR UNIT
WALL
MICROPHONE
0.8m
1m
OBH864

6
OUTLINES AND DIMENSIONS
5
Unit: mm
MSZ-FT25VG MSZ-FT35VG MSZ-FT50VG
MSZ-FT25VGK MSZ-FT35VGK MSZ-FT50VGK
OBH864

7
MSZ-FT25VG- E1
WIRING DIAGRAM
6
MSZ-FT35VG- E1 MSZ-FT50VG- E1
OBH864

8
MSZ-FT25VGK- E1 , SC1
MSZ-FT35VGK- E1 , SC1 MSZ-FT50VGK- E1 , SC1
OBH864

9
MSZ-FT25VGK- ET1
DIŞ
ÜNİTEYE
İÇ ÜNİTE
ELEKTRONİK
KONTROL KARTI
İÇ ÜNİTE
TERMİNAL KARTI
Wİ-Fİ ARAYÜZÜ
SİVİÇ/BUZZER
KARTI
GÖSTERGE
KARTI
ALICI KARTI
Terminal bloğu
Konektör
NOTLAR :
1. Dış ünite elektronik kablolamasıiçin dış ünite
elektronik kablo devre şemasını referans alınız.
2. Sadece bakır besleme
kablosu kullanın
3. Sembolleri gösterir
SİGORTA
(T3.15AL250V)
FAN MOTORU
VARİSTÖR
ODA SICAKLIK
TERMİSTÖRÜ
BORU SICAKLIK
TERMİSTÖRÜ(ANA)
BORU SICAKLIK
TERMİSTÖRÜ(YARDIMCI)
RESİSTÖR
TERMİNAL BLOĞU
RÖLE(1C)
PARÇA ADI
KANAT MOTORU
(DİKEY)
KANAT MOTORU
(YATAY ALT)
KANAT MOTORU
(YATAY ÜST)
MSZ-FT35VGK- ET1 MSZ-FT50VGK- ET1
SİGORTA
(T3.15AL250V)
FAN MOTORU
VARİSTÖR
ODA SICAKLIK
TERMİSTÖRÜ
BORU SICAKLIK
TERMİSTÖRÜ(ANA)
BORU SICAKLIK
TERMİSTÖRÜ(YARDIMCI)
TERMİNAL BLOĞU
RÖLE(1C)
PARÇA ADI
KANAT MOTORU
(DİKEY)
KANAT MOTORU
(YATAY ALT)
KANAT MOTORU
(YATAY ÜST)
REAKTÖR
DIŞ
ÜNİTEYE
İÇ ÜNİTE
ELEKTRONİK
KONTROL KARTI
İÇ ÜNİTE
TERMİNAL KARTI
Wİ-Fİ ARAYÜZÜ
SİVİÇ/BUZZER
KARTI
GÖSTERGE
KARTI
ALICI KARTI
Terminal bloğu
Konektör
NOTLAR :
1. Dış ünite elektronik kablolamasıiçin dış ünite
elektronik kablo devre şemasını referans alınız.
2. Sadece bakır besleme
kablosu kullanın
3. Sembolleri gösterir
OBH864

10
REFRIGERANT SYSTEM DIAGRAM
7
Unit: mm
MSZ-FT25VG MSZ-FT35VG MSZ-FT50VG
MSZ-FT25VGK MSZ-FT35VGK MSZ-FT50VGK
Indoor
heat
exchanger
Flared connection
Room temperature
thermistor
RT11 Flared connection
Refrigerant pipe ø9.52
(with heat insulator)
Refrigerant pipe ø6.35
(with heat insulator)
Indoor coil
thermistor
RT12
Indoor coil
thermistor
RT13
Refrigerant flow in cooling
Refrigerant flow in heating
OBH864