Mitsubishi Electric MSC-A07WV Service Manual Download Page 105

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105

13-2. Instruction of troubleshooting

Start

Indoor unit
operates.
Outdoor unit
doesn't
operate.

Indoor unit
doesn't receive
the signal from
remote controller.

Indoor unit
operates.
But indoor
unit doesn't
blow out
cool air.

Indoor unit
operates.
Outdoor unit
doesn't operate
normally.

OPERATION
INDICATOR
lamp on the
indoor unit is
flashing on
and off.

Outdoor unit
operates in
only Test Run
operation.

Outdoor unit
doesn't
operate
even in
Test Run
operation.

Indoor unit
operates,
when the
EMERGENCY
OPERATION
switch is
pressed.

Indoor unit
doesn't operate,
when the
EMERGENCY
OPERATION
switch is
pressed.

Check room
temperature
thermistor.
Refer to
"Test point
diagram and
voltage" on
page 124.

MUH-A07/A09/A12WV
MUX-A19/A20/
A25/A26WV
Refer to

"Check of
outdoor unit"
on page 113
or 114.

Refer to

"Check of
remote
controller
and receiver
P.C. board"
on page 112.

MUH-A07/A09/A12WV
Flash on and
off at 0.5-
second
intervals
Cause:
Indoor/
Outdoor unit
• Mis-wiring

2-time flash
Cause:
Indoor unit
• Trouble of
room temp-
erature/
indoor coil
thermistor

3-time flash
Cause:
Indoor unit
• Trouble of
indoor fan
motor

6-time flash
Cause:
Outdoor unit
• Trouble of
thermistor
in outdoor
unit

7-time flash
Cause:
Outdoor unit
• Trouble of
outdoor
control
system

Check room
temperature
thermistor
and indoor
coil thermis-
tor.
Refer to
"Test point
diagram and
voltage"
on page 124.

Refer to

"Check of
indoor fan
motor"
on page 112.

MUH-A07/A09/A12WV
Refer to

"Check of
outdoor
thermistor"
on page 118.

MUH-A07/A09/A12WV
Replace the
deicer
P.C. board.

MUH-A07/A09/A12WV
1-time flash
Cause:
Outdoor /
Indoor unit
• Trouble of
serial signal

Refer to

"How to check

mis-wiring and serial signal
error (When outdoor unit
doesn't work)" on page 117.

1. Check indoor /
outdoor
connecting wire.
2. Refer to

"Check of indoor
electronic control
P.C. board"
on page 113.

Outdoor unit
doesn't
stop even
if indoor unit
stops.

Unit doesn't
operate
normal
operation in
COOL or
HEAT mode.

MU/H-A07/A09/A12WV
Refer to

"Check of
outdoor unit"
on page 115.

MUH-A07/A09/A12WV
Refer to

"Check of
R.V. coil"
on page 116.

MUX-A10/A19/A20/
A25/A26WV
Refer to

"Check of
indoor/outdoor
units' connection
and outdoor unit"
on page 118.

1.<The case of the trouble of the serial signal>

When the power is turned off and then turned on again, the indication shows “the trouble of mis-wiring”.

MSC-A07WV -

MU-A07WV -

MUH-A07WV -

MUX-A10WV -

MUX-A25WV -

MSC-A09WV -

MU-A09WV -

MUH-A09WV -

MUX-A19WV -

MUX-A26WV -

MSC-A12WV -

MU-A12WV -

MUH-A12WV -

MUX-A20WV -

OB307A4.qxp 03.2.19 4:11 PM Page 105

Summary of Contents for MSC-A07WV

Page 1: ...MU A07WV MSC A09WV WH MU A09WV MSC A12WV WH MU A12WV MSC A07WV WH MUH A07WV MSC A09WV WH MUH A09WV MSC A12WV WH MUH A12WV Multi system type Models MSC A07WV WH MUX A10WV MSC A09WV WH MUX A19WV MSC A12WV WH MUX A20WV MUX A25WV MUX A26WV Inverter controlled multi system Model MXZ A18WV E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 MSC A07WV MSC A09WV MSC A12WV E1 E1 E1 No OB307 REVI...

Page 2: ...changed R22 R410A 2 Compressor has changed RH130VGCT RN092VHSHT MUH 09RV MUH A09WV 1 Refrigerant has changed R22 R410A 2 Compressor has changed RH165VGCT RN104VHSHT MUH 12RV MUH A12WV 1 Refrigerant has changed R22 R410A 2 Compressor has changed RH220VHAT RN135VHSHT MUX 10RV MUX A10WV 1 Outdoor model has changed 2 Refrigerant has changed R22 R410A MUX 19TV MUX A19WV MUX 20TV MUX A20WV MUX 25TV MUX ...

Page 3: ...hat of R22 some special tools and piping parts materials are required Refer to the table below 2 Take sufficient care not to allow water and other contaminations to enter the R410A refrigerant during storage and installation since it is more susceptible to contaminations than R22 3 For refrigerant piping use clean pressure proof parts materials specifically designed for R410A Refer to 2 Refrigeran...

Page 4: ... cylinder because the refrigerant bubbles due to high pressure and high speed vaporization No No No Yes Yes New New New Gauge manifold Charge hose Torque wrench Flare tool Flare gauge Vacuum pump adapter Electronic scale for refrigerant charging No Not Substitutable for R410A Yes Substitutable for R410A No 12 7 mm 1 Tools dedicated for the air conditioner with R410A refrigerant The following tools...

Page 5: ...ith indoor unit to the flare and the union seat surfaces 4 Air purge Do not discharge the refrigerant into the atmosphere Take care not to discharge refrigerant into the atmosphere during installation reinstallation or repairs to the refrigerant circuit Use the vacuum pump for air purging for the purpose of environmental protection 5 Additional charge For additional charging charge the refrigerant...

Page 6: ... control receiving section Remote controller Display section When the front panel is opened Operation indicator lamp Receiving section Air cleaning filter White bellows type Power supply cord Panel Front panel Air inlet Piping Drain hose Air outlet Drain outlet back and side Air inlet Piping Drain hose Air outlet Drain outlet back and side OUTDOOR UNIT MU A07WV MUH A07WV MU A09WV MUH A09WV MU A12W...

Page 7: ...1 E1 Installation plate Installation plate fixing screw 4 o 25 mm Remote controller holder Fixing screw for 3 3 5 o 16 mm Battery AAA for remote controller Wireless remote controller Felt tape Used for left or left rear piping Deodorizing filter Air cleaning filter Refrigerant oil 1 5 1 2 2 1 1 1 1 1 Indoor unit 1 2 3 4 5 6 7 8 9 0 Drain socket Drain cap 1 2 Outdoor unit MUH type 1 2 Air outlet Dr...

Page 8: ... WARM TOO COOL VANE MODE ECONO COOL STOP START HR MIN I FEEL COOL DRY PM CLOCK AM RESET CLOCK HEAT FAN Open the front lid ON OFF TOO COOL PM AM TOO WARM Signal transmitting section Operation display section OPERATE STOP ON OFF button TEMPERATURE buttons OPERATION SELECT button FAN SPEED CONTROL button OFF TIMER button HR button MIN button TIME SET button ON TIMER button RESET button ECONO COOL but...

Page 9: ... 65 Indoor units combination Unit A Unit B Cooling capacity kW Total Outdoor unit power consumption kW Current A Power factor 230V NOTE Electrical data is for outdoor unit only MXZ A18WV E1 NOTE Electrical data is for outdoor unit only 07 09 12 07 07 07 09 07 12 09 09 09 12 12 12 90 90 90 90 90 90 90 90 90 4 73 5 14 6 76 9 32 9 37 9 03 9 28 8 91 8 55 3 3 0 9 4 0 3 6 0 9 4 5 4 0 0 9 4 8 6 1 1 53 6 ...

Page 10: ...6V23 FC WHT BLK 353 BLK RED 321 780o540o255 34 45 735 1 0 75 350 NEO22 Cooling 474 372 276 RC4V19 LA 36 31 25 900 750 600 2 3 0 9 1 686 2 98 675 98 23 3 24 MSC A09WV E1 Single phase 230V 50Hz 10 0 17 35 RC4V19 LA WHT BLK 413 BLK RED 334 815O278O217 9 5 3 10 10 MU A09WV E1 Single phase 230V 50Hz 10 RN099VHSHT 700 C R 3 40 C S 4 56 RA6V23 FC WHT BLK 353 BLK RED 321 780o540o255 34 45 735 1 0 80 350 N...

Page 11: ...98 2 76 3 24 Heating 510 420 342 36 31 25 950 820 700 2 5 2 86 655 100 2 64 3 62 MSC A09WV E1 Single phase 230V 50Hz 10 0 17 35 90 0 17 RC4V19 LA WHT BLK 413 BLK RED 334 815O278O217 9 5 3 10 10 MUH A09WV E1 Single phase 230V 50Hz 1 710 10 24 0 31 RN104VHSHT 700 C R 3 40 C S 4 56 RA6V33 DB WHT BLK 301 BLK RED 332 780o540o255 38 49 825 1 1 10 350 NEO22 33 18 Cooling 474 384 306 36 31 25 900 770 650 ...

Page 12: ...RED 221 780O540O255 35 49 825 1 0 90 Room A B 350 NEO22 Single A or B 2 4 0 9 3 20 725 98 5 2 91 3 16 Single A 3 5 1 4 5 73 1 280 97 1 5 16 2 65 Double A B 3 5 2 4 1 4 0 9 8 96 2 005 97 3 8 39 2 84 Double A B 1 4O2 0 2O2 3 25 730 97 7 2 96 3 50 MSC A07WV E1 Cooling Single phase 230V 50Hz 474 372 276 10 0 17 35 90 0 17 RC4V19 LA WHT BLK 413 BLK RED 334 815O278O217 9 5 36 31 25 900 750 600 3 10 10 M...

Page 13: ...ase 230V 50Hz 474 384 306 10 0 17 35 90 0 17 RC4V19 LA WHT BLK 413 BLK RED 334 815O278O217 9 5 36 31 25 900 770 650 3 10 10 Single phase 230V 50Hz Double A B or A C 2 6 2 8 0 9 1 1 2 460 20 8 18 1 850 98 3 47 7 61 0 57 2 81 MC1 RN099VHSHT MC2 RN125VHSHT MC1 650 MC2 800 RA6V60 GA WHT BLK 90 BLK RED 146 840O640O330 65 52 730 1 0 80 Room A 1 00 Room B C MC1 350 NEO22 MC2 350 NEO22 MUX A20WV E1 Electr...

Page 14: ... h K h A A W A kW A A A W mm kg dB rpm kg cc MSC A12WV E1 Unit A B Cooling Single phase 230V 50Hz 582 444 324 10 0 19 40 92 0 19 RC4V19 KA WHT BLK 316 BLK RED 299 815O278O217 10 5 40 33 26 930 760 600 3 10 10 Electrical data Fan motor Special remarks Compressor Electrical data Fan motor Special remarks Capacity Coefficient of performance C O P Outdoor unit power supply Indoor unit No Capacity MUX ...

Page 15: ...0 0 19 40 92 0 19 RC4V19 KA WHT BLK 316 BLK RED 299 815O278O217 10 5 40 33 26 930 760 600 3 10 10 Electrical data Fan motor Special remarks Compressor Electrical data Fan motor Special remarks Capacity Coefficient of performance C O P Outdoor unit power supply Indoor unit No Capacity MUX A26WV E1 Single phase 230V 50Hz 2 760 20 52 0 53 MC1 RN145VHSHT MC2 RN125VHSHT MC1 1 000 MC2 800 RA6V60 FA WHT ...

Page 16: ... Thermistor RT68 m m m m kW R h K h A A W A kW W A A A W mm kg dB rpm kg cc k k k k k k Compressor Electrical data Fan motor Special remarks Capacity System Coefficient of performance C O P Outdoor unit power supply MXZ A18WV E1 Single phase 230V 50Hz 2 Total model name 24 Total model name 24 Max 30 chargeless 20 Max 20 10 10 2 460 20 90 0 8 98 0 57 SNV 092FJYH ROTARY 1 450 U V 2 56 V W 2 56 W U 2...

Page 17: ...ER FREQUENCIES Hz Test conditions Cooling DB27 WB19 Heating DB20 WB MSC A09WV E1 COOL High FUNCTION FAN SPEED 36 HEAT 39 SPL dB A LINE 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 APPROXIMATE TERESHOLD OF HEARING FOR CONTINUOUS NOISE 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 Test conditions Cooling DB27 W...

Page 18: ... BAR BAND CENTER FREQUENCIES Hz Test conditions Cooling DB27 WB19 MUX A10WV E1 COOL FUNCTION 49 SPL dB A LINE 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 APPROXIMATE TERESHOLD OF HEARING FOR CONTINUOUS NOISE 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 Test conditions Cooling DB35 WB24 Heating DB 7 WB 6 MUH...

Page 19: ...0 8000 APPROXIMATE TERESHOLD OF HEARING FOR CONTINUOUS NOISE 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 Test conditions Cooling DB35 WB24 COOL FUNCTION 52 SPL dB A LINE MUX A26WV E1 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 APPROXIMATE TERESHOLD OF HEARING FOR CONTINUOUS NOISE NC 60 NC 50 NC 40 NC 30 NC...

Page 20: ...upply cord Lead to right 1 0m Lead to left 0 3m Wireless remote controller Liquid line 6 35 0 5m Gas line 9 52 0 43m Insulation 37 O D 21 I D 217 215 218 5 258 81 5 81 5 41 42 2 5 17 5 161 5 161 5 326 326 162 19 58 5 7 or more 90 110 30 149 606 278 60 815 783 Indoor unit Installation plate Wall hole 65 Installation plate Insulation 28 Drain hose 16 Connected part O D Air in Air out Power supply co...

Page 21: ... A07 A09WV MUH A07 A09WV 12 7 MU A12WV MUH A12WV Liquid refrigerant pipe joint Refrigerant pipe flared 6 35 Air out Air in Air in 109 32 110 147 Drainage 3holes 33 100mm or more 100mm or more 100mm or more 350mm or more REQUIRED SPACE 400mm or more Unit mm OUTDOOR UNIT MU A07WV MUH A07WV MU A09WV MUH A09WV MU A12WV MUH A12WV E1 E1 E1 E1 E1 E1 ...

Page 22: ...nit mm MUX A19WV E1 500 840 61 264 1 0 1 0 Service panel Open as a rule 500mm or more if the front and both sides are open 100mm or more 200mm or more if there are obstacles to both sides Open as a rule 500mm or more if the back both sides and top are open 350mm or more 100mm or more B UNIT A UNIT Gas refrigerant pipe joint Refrigerant pipe flared 9 52 Gas refrigerant pipe joint Refrigerant pipe f...

Page 23: ...5 121 40 438 Air in Air out Air in 273 100 125 320 30 330 640 360 76 50 505050 50 Drainage 3holes 33 C UNIT 34 Unit mm MUX A25WV E1 500 840 61 264 1 0 1 0 Service panel Open as a rule 500mm or more if the front and both sides are open 100mm or more 200mm or more if there are obstacles to both sides Open as a rule 500mm or more if the back both sides and top are open 350mm or more 100mm or more B U...

Page 24: ...p are open 350mm or more 100mm or more MUX A26WV E1 OUTDOOR UNIT Unit mm MXZ A18WV E1 OUTDOOR UNIT Gas refrigerant valve flared 9 52 Liquid refrigerant valve flared 6 35 65 50 587 34 69 195 90 65 65 65 840 40 330 360 500 273 320 640 121 Service panel B UNIT Air in A UNIT Drainage 3 holes 33 Air in Air out REQUIRED SPACE Open as a rule More than100mm if the front and both sides are open More than 1...

Page 25: ... 4 3 2 1 MF 121 CN 1 3 5 111 CN 112 CN RT12 RT11 NR11 F11 ELECTRONIC CONTROL P C BOARD CN211 TAB12 CN201 3 2 1 CN202 2 1 151 CN 5 5 BRN RED BLU WHT BLK BLU BRN TB L 3 N 2 1 12V TO OUTDOOR UNIT CONNECTING POWER SUPPLY CORD N 230V 50Hz GRN YLW POWER MONITOR RECEIVER P C BOARD REMOTE CONTROLLER MV FOR MUH OR MXZ TYPE FOR MU OR MUX TYPE 12V PE 101 CN T11 GRN LD103 INDOOR UNIT NOTE 1 About the outdoor ...

Page 26: ...2 DSAR NAME NAME NAME COMPRESSOR CAPACITOR OUTDOOR FAN CAPACITOR SURGE ABSORBER COMPRESSOR INNER PROTECTOR OUTDOOR FAN MOTOR INNER FUSE TERMINAL BLOCK CONTACTOR VG79B194H02 VG79B195H02 MC CN661 3 1 2 CN721 21S4 MF SR62 SR61 TAB20 GRN YLW BLU CIRCUIT BREAKER POWER SUPPLY BLU BRN DSAR BLK BRN RED DEICER P C BOARD 4 C1 BLK RED 3 WHT S C R CN730 RT61 BLK 2 3 1 RED WHT 12V FROM CONNECTING INDOOR UNIT T...

Page 27: ... BLU BLU BLU BLU BLU 1 2 21R2 21R1 BLU BLU BLU SYMBOL 21R1 21R2 52C SYMBOL MF TB1 TB2 TB3 X1 X2 21R SYMBOL C1 C2 DSAR F61 F62 MC NAME NAME NAME COMPRESSOR CAPACITOR OUTDOOR FAN CAPACITOR SURGE ABSORBER FUSE 2A COMPRESSOR INNER PROTECTOR OUTDOOR FAN MOTOR INNER FUSE TERMINAL BLOCK RELAY A RELAY B SOLENOID COIL SOLENOID COIL A SOLENOID COIL B COMPRESSOR CONTACTOR VG79B203H01 NOTE 1 About the indoor ...

Page 28: ...X521 X522 SYMBOL MC1 MC2 MF61 NR61 SR861 SYMBOL C1 C2 C61 DSAR F61 NAME NAME NAME COMPRESSOR CAPACITOR MC1 COMPRESSOR CAPACITOR MC2 OUTDOOR FAN CAPACITOR SURGE ABSORBER FUSE 3 15A COMPRESSOR INNER PROTECTOR COMPRESSOR INNER PROTECTOR OUTDOOR FAN MOTOR INNER PROTECTOR SURGE ABSORBER OUTDOOR FAN RELAY TERMINAL BLOCK TERMINAL BLOCK TRANSFORMER COMPRESSOR CONTACTOR MC1 COMPRESSOR CONTACTOR MC2 VG79B20...

Page 29: ... SYMBOL MF61 NR61 SR861 SR863 SR865 SR866 TB1 SYMBOL C1 C2 C61 DSAR F61 MC1 MC2 NAME NAME NAME COMPRESSOR CAPACITOR MC1 COMPRESSOR CAPACITOR MC2 OUTDOOR FAN CAPACITOR SURGE ABSORBER FUSE 3 15A COMPRESSOR INNER PROTECTOR COMPRESSOR INNER PROTECTOR OUTDOOR FAN MOTOR INNER PROTECTOR SURGE ABSORBER OUTDOOR FAN RELAY RELAY 21RB RELAY C 21R4 RELAY B 21R3 TERMINAL BLOCK TERMINAL BLOCK TRANS FORMER COMPRE...

Page 30: ... BRN SYMBOL SR861 SR863 SR864 SR865 SR866 SR867 SR868 TB1 TB4 T61 SYMBOL C1 C2 C61 DSAR F61 MC1 MC2 MF61 NR61 NAME NAME NAME COMPRESSOR CAPACITOR MC1 COMPRESSOR CAPACITOR MC2 OUTDOOR FAN CAPACITOR SURGE ABSORBER FUSE 3 15A COMPRESSOR INNER PROTECTOR COMPRESSOR INNER PROTECTOR OUTDOOR FAN MOTOR INNER PROTECTOR SURGE ABSORBER OUTDOOR FAN RELAY RELAY 21RB RELAY 21RA RELAY D 21R4 RELAY C 21R3 RELAY B ...

Page 31: ...G VALVE SOLENOID COIL FAN MOTOR COMPRESSOR RELAY FAN MOTOR RELAY SOLENOID COIL RELAY NAME HIGH PRESSURE PROTECT THERMISTOR SYMBOL L L63 LEV B NR63 R62 R64B RT6A RT6B GAS PIPE TEMP B THERMISTOR GAS PIPE TEMP A THERMISTOR RESISTOR RESISTOR VARISTOR EXPANSION VALVE B COIL NORMAL MODE CHOKE COIL NAME REACTOR CURRENT TRANSFORMER SMOOTHING CAPACITOR SMOOTHING CAPACITOR IPM POWER TRANSISTOR MODULE F911 F...

Page 32: ...Refrigerant pipe 6 35 with heat insulator Refrigerant flow in cooling Unit mm Unit mm Refrigerant pipe 12 7 with heat insulator Stop valve with service port Stop valve with service port Strainer Refrigerant pipe 6 35 with heat insulator Stop valve Capillary tube 3 0x 1 4x550 Refrigerant flow in cooling Outdoor heat exchanger Room temperature thermistor RT11 Indoor coil thermistor RT12 Indoor coil ...

Page 33: ...07WV MSC A09WV E1 E1 MUH A07WV MUH A09WV E1 E1 INDOOR UNIT OUTDOOR UNIT Indoor heat exchanger Room temperature thermistor RT11 with heat insulator Refrigerant pipe 9 52 4 way valve Defrost thermistor RT61 Muffler Outdoor heat exchanger Capillary tube 3 0x 1 4x800 2 pcs MUH A07WV 3 0x 1 4x500 2 pcs MUH A09WV Capillary tube 3 0x 1 6x350 MUH A07WV 3 0x 1 6x600 MUH A09WV Capillary tube 3 0x 1 4x1050 M...

Page 34: ...1 Indoor unit w Max Height difference 10m Height difference should be within 10m regardless of which unit indoor or outdoor position is high Outdoor unit Refrigerant Piping Max length A Model Refrigerant piping length one way Model Refrigerant piping length one way 7m 0 10m 60 15m 160 20m 260 MSC A07WV E1 MUH A07WV E1 MSC A09WV E1 MUH A09WV E1 MSC A12WV E1 MUH A12WV E1 Calculation Xg 20g m 5 x A 7...

Page 35: ... Muffler Refrigerant flow in cooling Stop valve with service port Stop valve Stop valve 3 0 x 1 6 x 900 3 0 x 1 4 x 400 3 0 x 1 4 x 400 Strainer MSC A07WV E1 MAX REFRIGERANT PIPING LENGTH MAX HEIGHT DIFFERENCE PIPING PREPARATION 1 Table below shows the specifications of pipes commercially available 2 Ensure that the 2 refrigerant pipes are well insulated to prevent condensation 3 Refrigerant bendi...

Page 36: ...ipe 12 7 With insulation Refrigerant pipe 9 52 With insulation Refrigerant pipe 6 35 Flared connection With insulation Refrigerant pipe 6 35 Flared connection Stop valve with service port Stop valve Stop valve with service port Capillary tube Capillary tube Strainer Muffler Muffler Strainer Compressor A Compressor B Refrigerant flow in cooling MSC A12WV E1 MSC A07WV E1 Stop valve 3 0 x 1 4 x 850 3...

Page 37: ...LB Height difference H 10m 10m No of bends 10 10 PIPING PREPARATION 1Table below shows the specifications of pipes commercially available 2Ensure that the 2 refrigerant pipes are well insulated to prevent condensation 3Refrigerant bending radius must be 10cm or more MAX REFRIGERANT PIPING LENGTH MAX HEIGHT DIFFERENCE unit A 7m 0 8m 20 9m 40 10m 60 11m 80 12m 100 13m 120 14m 140 15m 160 UNIT No Ins...

Page 38: ...ection Refrigerant pipe 9 52 With insulation Refrigerant pipe 6 35 Flared connection Stop valve with service port Stop valve Solenoid valve 21R3 Solenoid valve 21R4 Solenoid valve 21RB Stop valve with service port Stop valve with service port Capillary tube Capillary tube Capillary tube Capillary tube Capillary tube Compressor A Compressor B C Refrigerant flow in cooling MSC A09WV E1 MSC A09WV E1 ...

Page 39: ...REFRIGERANT CHARGE R410A g Max limits UNIT No A B C Pipe length 15m 15m Total 30m LB LC 15m LA LB LC Height difference H 10m 10m 10m No of bends 10 10 Total 15 10 PIPING PREPARATION 1Table below shows the specifications of pipes commercially available 2Ensure that the 2 refrigerant pipes are well insulated to prevent condensation 3Refrigerant bending radius must be 100mm or more MAX REFRIGERANT PI...

Page 40: ...erant pipe 12 7 With insulation Refrigerant pipe 12 7 With insulation Refrigerant pipe 6 35 Flared connection With insulation Refrigerant pipe 6 35 Flared connection Stop valve with service port Stop valve Stop valve with service port Capillary tube Capillary tube Strainer Muffler Muffler Strainer Compressor A Compressor B Refrigerant flow in cooling MSC A12WV E1 MSC A12WV E1 Stop valve 3 0 x 1 4 ...

Page 41: ...rant piping length one way 7m 0 8m 20 9m 40 10m 60 11m 80 12m 100 13m 120 14m 140 15m 160 MSX A25WV E1 ADDITIONAL REFRIGERANT CHARGE R410A g PIPING PREPARATION 1Table below shows the specifications of pipes commercially available 2Ensure that the 2 refrigerant pipes are well insulated to prevent condensation 3Refrigerant bending radius must be 10cm or more MAX REFRIGERANT PIPING LENGTH MAX HEIGHT ...

Page 42: ... valve with service port Stop valve Stop valve UNIT C Indoor heat exchanger Indoor coil thermistor RT12 Room temperature thermistor RT11 UNIT D Indoor heat exchanger Indoor coil thermistor RT12 Room temperature thermistor RT11 With insulation Refrigerant pipe 9 52 With insulation Refrigerant pipe 9 52 Flared connection With insulation Refrigerant pipe 6 35 With insulation Refrigerant pipe 6 35 Fla...

Page 43: ...10 10 PIPING PREPARATION MAX REFRIGERANT PIPING LENGTH MAX HEIGHT DIFFERENCE Outdoor unit precharged 1050g 1050g Refrigerant piping length one way 2 unit total 10 m 11 m 12 m 13 m 14 m 15 m 16 m 17 m 18 m 19 m 20 m 21 m 22 m 23 m 24 m 25 m 26 m 27 m 28 m 29 m 30 m 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 0 unit unit B A and unit B A and unit D C UNIT No unit unit D ...

Page 44: ...ameter is different according to indoor unit to be connected When using extension pipes refer to the tables below When diameter of refrigerant pipe is different from that of outdoor unit union use optional Different diameter pipe For further information on Different diameter pipe see page BACK COVER Indoor unit Extension pipe diameter class Pipe diameter Liquid 6 35 1 4 Liquid 6 35 1 4 07 09 Gas 9...

Page 45: ...east 2 sets of wet and dry bulb thermometers to the indoor air intake as shown in the figure and at least 2 sets of wet and dry bulb thermometers to the indoor air outlet The thermometers must be attached to the position where air speed is high 2 Attach at least 2 sets of wet and dry bulb thermometers to the outdoor air intake Cover the thermometers to prevent direct rays of the sun 3 Check that t...

Page 46: ...18 8 17 2 15 7 14 1 12 5 11 0 9 4 19 2 17 8 16 3 14 8 13 3 11 8 10 4 8 9 MSC A07WV E1 MUH A07WV E1 MUH A09WV E1 MSC A09WV E1 MUH A12WV E1 MSC A12WV E1 25 2 23 3 21 4 19 4 17 5 15 5 13 6 11 7 NOTE The above curves are for the heating operation without any frost 10 2 OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT COOL operation Both indoor and outdoor unit are under the same temperature humidity cond...

Page 47: ...nt temperature C Ambient humidity Outdoor unit current A 15 20 50 25 60 30 70 35 0 7 0 8 0 9 1 0 1 2 10 11 12 1 1 9 8 7 230V 15 20 50 25 60 30 70 35 2 0 2 5 3 0 3 5 4 0 230V MUH A07WV E1 MUH A07WV E1 Outdoor low pressure Ambient temperature C Ambient humidity Ambient temperature C Ambient humidity Outdoor unit current A 15 20 50 25 60 30 70 35 0 7 0 8 0 9 1 0 1 2 10 11 12 1 1 9 8 7 230V MUH A09WV ...

Page 48: ... 0 7 230V Outdoor unit current A Outdoor unit current A Outdoor unit current A Ambient temperature C Ambient temperature C Ambient temperature C MUH A12WV E1 MUH A07WV E1 MUH A09WV E1 15 20 50 25 60 30 70 35 0 7 0 8 0 9 1 0 1 1 1 2 1 3 230V 7 8 9 10 11 12 13 MUH A12WV E1 Outdoor low pressure Ambient temperature C Ambient humidity 15 20 50 25 60 30 70 35 2 0 3 0 4 0 5 0 6 0 230V MUH A12WV E1 Ambien...

Page 49: ... 60 30 70 C C 70 Dry bulb temperature Relative humidity 50 60 20 25 30 10 4 OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT COOL operation Both indoor and outdoor unit are under same temperature humidity condition Air flow should be set at MAX The unit of pressure has been changed to MPa on the international system of units SI unit system The conversion factor is 1 MPa Gauge 10 2 kgf f f Gauge MUX A...

Page 50: ...A20WV E1 1 2 1 0 0 9 0 8 0 7 0 6 kgf F Gauge MPa Gauge Outdoor low pressure kgf F Gauge 10 9 8 7 6 12 1 1 11 Outdoor unit current A Single operation Unit A or B 1 1 1 0 0 9 0 8 0 7 0 6 Outdoor low pressure kgf F Gauge 10 9 8 7 6 11 Single operation Unit A or B Single operation Unit C or D 4 0 5 0 6 0 7 0 Outdoor unit current A 3 0 4 0 5 0 6 0 Outdoor unit current A 2 0 3 0 4 0 5 0 230V 230V 230V 2...

Page 51: ...0 1 5 0 50 100 150 0 5 1 0 1 5 0 50 100 150 0 5 1 0 1 5 0 50 100 150 0 5 1 0 1 5 COOL Capacity Frequency Hz Frequency COOL Total input Hz Hz HEAT Capacity Frequency Frequency HEAT Total input Hz COOL Capacity Frequency Hz Frequency COOL Total input Hz HEAT Capacity Frequency 0 50 100 150 0 5 1 0 1 5 Frequency HEAT Total input Hz COOL Capacity Frequency Hz Frequency COOL Total input Hz HEAT Capacit...

Page 52: ...s emergency run ON OFF button 3 Compressor starts running at 33Hz COOL or 45Hz HEAT 4 Indoor fan runs at HI speed and continues for 30 minutes 5 To cancel this operation press emergency run ON OFF button or any button on remote controller Indoor Outdoor Set air flow to Hi speed Inverter output frequency is 80Hz 2 HEAT operation DB C 20 0 WB C 14 5 DB C 2 7 15 20 0 WB C 1 6 12 14 5 15 20 25 30 50 6...

Page 53: ...utton 3 Compressor starts running at 33Hz COOL or 45Hz HEAT 4 Indoor fan runs at HI speed and continues for 30 minutes 5 To cancel this operation press emergency run ON OFF button or any button on remote controller 2Air flow speed HI 3Inverter output frequency 55Hz Indoor Outdoor Set air flow to Hi speed Inverter output frequency is 80Hz 2 HEAT operation DB C 20 0 WB C 14 5 DB C 2 7 15 20 0 WB C 1...

Page 54: ...utton 3 Compressor starts running at 33Hz COOL or 45Hz HEAT 4 Indoor fan runs at HI speed and continues for 30 minutes 5 To cancel this operation press emergency run ON OFF button or any button on remote controller 2Air flow speed HI 3Inverter output frequency 55Hz Indoor Outdoor Set air flow to Hi speed Inverter output frequency is 80Hz 2 HEAT operation DB C 20 0 WB C 14 5 DB C 2 7 15 20 0 WB C 1...

Page 55: ...32 738 2 94 0 94 0 32 760 28 18 2 70 2 27 0 84 568 2 59 2 17 0 84 596 2 48 2 09 0 84 625 2 39 2 01 0 84 653 28 20 2 82 2 03 0 72 596 2 70 1 95 0 72 632 2 62 1 89 0 72 646 2 53 1 82 0 72 675 28 22 2 93 1 76 0 60 618 2 83 1 70 0 60 657 2 76 1 66 0 60 675 2 65 1 59 0 60 703 28 24 3 08 1 48 0 48 646 2 97 1 42 0 48 682 2 90 1 39 0 48 703 2 81 1 35 0 48 738 28 26 3 17 1 14 0 36 682 3 08 1 11 0 36 717 3 ...

Page 56: ...32 845 2 54 0 81 0 32 863 28 18 2 25 1 89 0 84 696 2 07 1 74 0 84 738 1 99 1 67 0 84 753 28 20 2 37 1 71 0 72 724 2 21 1 59 0 72 760 2 13 1 53 0 72 781 28 22 2 51 1 50 0 60 753 2 35 1 41 0 60 795 2 27 1 36 0 60 809 28 24 2 65 1 27 0 48 781 2 48 1 19 0 48 817 2 42 1 16 0 48 834 28 26 2 78 1 00 0 36 809 2 62 0 94 0 36 845 2 54 0 91 0 36 863 29 18 2 25 1 98 0 88 696 2 07 1 82 0 88 738 1 99 1 75 0 88 ...

Page 57: ...8 811 3 26 0 91 0 28 835 28 18 3 00 2 40 0 80 624 2 87 2 30 0 80 655 2 75 2 20 0 80 686 2 65 2 12 0 80 718 28 20 3 12 2 12 0 68 655 3 00 2 04 0 68 694 2 91 1 98 0 68 710 2 81 1 91 0 68 741 28 22 3 25 1 82 0 56 679 3 14 1 76 0 56 722 3 06 1 71 0 56 741 2 93 1 64 0 56 772 28 24 3 42 1 50 0 44 710 3 29 1 45 0 44 749 3 21 1 41 0 44 772 3 11 1 37 0 44 811 28 26 3 52 1 13 0 32 749 3 42 1 09 0 32 788 3 3...

Page 58: ...8 928 2 82 0 79 0 28 948 28 18 2 50 2 00 0 80 764 2 30 1 84 0 80 811 2 21 1 76 0 80 827 28 20 2 63 1 79 0 68 796 2 45 1 66 0 68 835 2 36 1 60 0 68 858 28 22 2 78 1 56 0 56 827 2 60 1 46 0 56 874 2 51 1 41 0 56 889 28 24 2 93 1 29 0 44 858 2 75 1 21 0 44 897 2 68 1 18 0 44 917 28 26 3 09 0 99 0 32 889 2 91 0 93 0 32 928 2 82 0 90 0 32 948 29 18 2 50 2 10 0 84 764 2 30 1 93 0 84 811 2 21 1 85 0 84 8...

Page 59: ...86 4 42 1 10 0 25 1220 28 18 4 05 3 12 0 77 912 3 88 2 99 0 77 958 3 73 2 87 0 77 1003 3 59 2 76 0 77 1049 28 20 4 23 2 75 0 65 958 4 05 2 63 0 65 1015 3 93 2 56 0 65 1037 3 80 2 47 0 65 1083 28 22 4 40 2 33 0 53 992 4 24 2 25 0 53 1055 4 14 2 19 0 53 1083 3 97 2 10 0 53 1129 28 24 4 62 1 90 0 41 1037 4 45 1 82 0 41 1094 4 35 1 78 0 41 1129 4 21 1 73 0 41 1186 28 26 4 76 1 38 0 29 1094 4 62 1 34 0...

Page 60: ... 1357 3 81 0 95 0 25 1385 28 18 3 38 2 60 0 77 1117 3 11 2 39 0 77 1186 2 98 2 30 0 77 1208 28 20 3 55 2 31 0 65 1163 3 31 2 15 0 65 1220 3 19 2 07 0 65 1254 28 22 3 76 1 99 0 53 1208 3 52 1 87 0 53 1277 3 40 1 80 0 53 1300 28 24 3 97 1 63 0 41 1254 3 73 1 53 0 41 1311 3 62 1 49 0 41 1340 28 26 4 17 1 21 0 29 1300 3 93 1 14 0 29 1357 3 81 1 11 0 29 1385 29 18 3 38 2 74 0 81 1117 3 11 2 52 0 81 118...

Page 61: ...32 738 2 94 0 94 0 32 760 28 18 2 70 2 27 0 84 568 2 59 2 17 0 84 596 2 48 2 09 0 84 625 2 39 2 01 0 84 653 28 20 2 82 2 03 0 72 596 2 70 1 95 0 72 632 2 62 1 89 0 72 646 2 53 1 82 0 72 675 28 22 2 93 1 76 0 60 618 2 83 1 70 0 60 657 2 76 1 66 0 60 675 2 65 1 59 0 60 703 28 24 3 08 1 48 0 48 646 2 97 1 42 0 48 682 2 90 1 39 0 48 703 2 81 1 35 0 48 738 28 26 3 17 1 14 0 36 682 3 08 1 11 0 36 717 3 ...

Page 62: ...32 845 2 54 0 81 0 32 863 28 18 2 25 1 89 0 84 696 2 07 1 74 0 84 738 1 99 1 67 0 84 753 28 20 2 37 1 71 0 72 724 2 21 1 59 0 72 760 2 13 1 53 0 72 781 28 22 2 51 1 50 0 60 753 2 35 1 41 0 60 795 2 27 1 36 0 60 809 28 24 2 65 1 27 0 48 781 2 48 1 19 0 48 817 2 42 1 16 0 48 834 28 26 2 78 1 00 0 36 809 2 62 0 94 0 36 845 2 54 0 91 0 36 863 29 18 2 25 1 98 0 88 696 2 07 1 82 0 88 738 1 99 1 75 0 88 ...

Page 63: ...28 811 3 26 0 91 0 28 835 28 18 3 00 2 40 0 80 624 2 87 2 30 0 80 655 2 75 2 20 0 80 686 2 65 2 12 0 80 718 28 20 3 12 2 12 0 68 655 3 00 2 04 0 68 694 2 91 1 98 0 68 710 2 81 1 91 0 68 741 28 22 3 25 1 82 0 56 679 3 14 1 76 0 56 722 3 06 1 71 0 56 741 2 93 1 64 0 56 772 28 24 3 42 1 50 0 44 710 3 29 1 45 0 44 749 3 21 1 41 0 44 772 3 11 1 37 0 44 811 28 26 3 52 1 13 0 32 749 3 42 1 09 0 32 788 3 ...

Page 64: ...28 928 2 82 0 79 0 28 948 28 18 2 50 2 00 0 80 764 2 30 1 84 0 80 811 2 21 1 76 0 80 827 28 20 2 63 1 79 0 68 796 2 45 1 66 0 68 835 2 36 1 60 0 68 858 28 22 2 78 1 56 0 56 827 2 60 1 46 0 56 874 2 51 1 41 0 56 889 28 24 2 93 1 29 0 44 858 2 75 1 21 0 44 897 2 68 1 18 0 44 917 28 26 3 09 0 99 0 32 889 2 91 0 93 0 32 928 2 82 0 90 0 32 948 29 18 2 50 2 10 0 84 764 2 30 1 93 0 84 811 2 21 1 85 0 84 ...

Page 65: ...4 35 1 09 0 25 1134 28 18 4 00 3 08 0 77 848 3 83 2 95 0 77 890 3 67 2 83 0 77 933 3 54 2 72 0 77 975 28 20 4 17 2 71 0 65 890 4 00 2 60 0 65 943 3 88 2 52 0 65 965 3 74 2 43 0 65 1007 28 22 4 34 2 30 0 53 922 4 18 2 22 0 53 981 4 08 2 16 0 53 1007 3 91 2 07 0 53 1049 28 24 4 56 1 87 0 41 965 4 39 1 80 0 41 1018 4 28 1 76 0 41 1049 4 15 1 70 0 41 1102 28 26 4 69 1 36 0 29 1018 4 56 1 32 0 29 1071 ...

Page 66: ...5 1261 3 76 0 94 0 25 1288 28 18 3 33 2 57 0 77 1039 3 06 2 36 0 77 1102 2 94 2 26 0 77 1124 28 20 3 50 2 28 0 65 1081 3 26 2 12 0 65 1134 3 15 2 04 0 65 1166 28 22 3 71 1 96 0 53 1124 3 47 1 84 0 53 1187 3 35 1 77 0 53 1208 28 24 3 91 1 60 0 41 1166 3 67 1 51 0 41 1219 3 57 1 46 0 41 1246 28 26 4 11 1 19 0 29 1208 3 88 1 12 0 29 1261 3 76 1 09 0 29 1288 29 18 3 33 2 70 0 81 1039 3 06 2 48 0 81 11...

Page 67: ...PUT Q INPUT 15 1 92 546 2 32 655 2 71 739 3 11 798 3 51 848 3 87 874 4 27 890 21 1 83 588 2 20 697 2 59 773 2 96 832 3 36 874 3 72 899 4 10 932 26 1 65 630 2 04 739 2 41 815 2 81 874 3 20 916 3 57 941 3 97 966 CAPACITY 3 05 kW INPUT 840 W MSC A12WV MUH A12WV E1 E1 OUTDOOR WB INDOOR 10 5 0 5 10 15 20 DB Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT 15 2 46 702 2 96 842 3 47 950 3 98 1026 ...

Page 68: ...1 0 32 790 3 07 0 98 0 32 813 28 18 2 82 2 37 0 84 608 2 70 2 27 0 84 638 2 59 2 18 0 84 669 2 50 2 10 0 84 699 28 20 2 94 2 12 0 72 638 2 82 2 03 0 72 676 2 74 1 97 0 72 692 2 64 1 90 0 72 722 28 22 3 06 1 84 0 60 661 2 95 1 77 0 60 703 2 88 1 73 0 60 722 2 76 1 66 0 60 752 28 24 3 22 1 54 0 48 692 3 10 1 49 0 48 730 3 02 1 45 0 48 752 2 93 1 41 0 48 790 28 26 3 31 1 19 0 36 730 3 22 1 16 0 36 76...

Page 69: ... 2 62 1 46 0 56 806 2 45 1 37 0 56 851 2 36 1 32 0 56 866 27 24 2 76 1 21 0 44 836 2 59 1 14 0 44 874 2 52 1 11 0 44 893 27 26 2 90 0 93 0 32 866 2 74 0 88 0 32 904 2 65 0 85 0 32 923 28 18 2 35 1 98 0 84 745 2 16 1 81 0 84 790 2 08 1 74 0 84 806 28 20 2 47 1 78 0 72 775 2 30 1 66 0 72 813 2 22 1 60 0 72 836 28 22 2 62 1 57 0 60 806 2 45 1 47 0 60 851 2 36 1 42 0 60 866 28 24 2 76 1 32 0 48 836 2 ...

Page 70: ...1 01 0 32 853 3 07 0 98 0 32 877 28 18 2 82 2 37 0 84 656 2 70 2 27 0 84 689 2 59 2 18 0 84 722 2 50 2 10 0 84 754 28 20 2 94 2 12 0 72 689 2 82 2 03 0 72 730 2 74 1 97 0 72 746 2 64 1 90 0 72 779 28 22 3 06 1 84 0 60 713 2 95 1 77 0 60 759 2 88 1 73 0 60 779 2 76 1 66 0 60 812 28 24 3 22 1 54 0 48 746 3 10 1 49 0 48 787 3 02 1 45 0 48 812 2 93 1 41 0 48 853 28 26 3 31 1 19 0 36 787 3 22 1 16 0 36...

Page 71: ...0 88 0 32 976 2 65 0 85 0 32 996 28 18 2 35 1 98 0 84 804 2 16 1 81 0 84 853 2 08 1 74 0 84 869 28 20 2 47 1 78 0 72 836 2 30 1 66 0 72 877 2 22 1 60 0 72 902 28 22 2 62 1 57 0 60 869 2 45 1 47 0 60 918 2 36 1 42 0 60 935 28 24 2 76 1 32 0 48 902 2 59 1 24 0 48 943 2 52 1 21 0 48 964 28 26 2 90 1 05 0 36 935 2 74 0 98 0 36 976 2 65 0 95 0 36 996 29 18 2 35 2 07 0 88 804 2 16 1 90 0 88 853 2 08 1 8...

Page 72: ...1 42 0 31 1373 4 48 1 38 0 31 1412 28 18 4 11 3 40 0 83 1056 3 94 3 26 0 83 1109 3 78 3 13 0 83 1162 3 64 3 01 0 83 1214 28 20 4 29 3 03 0 71 1109 4 11 2 91 0 71 1175 3 99 2 82 0 71 1201 3 85 2 72 0 71 1254 28 22 4 46 2 62 0 59 1148 4 31 2 53 0 59 1221 4 20 2 47 0 59 1254 4 03 2 36 0 59 1307 28 24 4 69 2 19 0 47 1201 4 52 2 11 0 47 1267 4 41 2 06 0 47 1307 4 27 1 99 0 47 1373 28 26 4 83 1 68 0 35 ...

Page 73: ... 22 0 31 1571 3 87 1 19 0 31 1604 28 18 3 43 2 84 0 83 1294 3 15 2 61 0 83 1373 3 03 2 50 0 83 1399 28 20 3 61 2 55 0 71 1346 3 36 2 38 0 71 1412 3 24 2 29 0 71 1452 28 22 3 82 2 24 0 59 1399 3 57 2 10 0 59 1478 3 45 2 02 0 59 1505 28 24 4 03 1 88 0 47 1452 3 78 1 77 0 47 1518 3 68 1 72 0 47 1551 28 26 4 24 1 47 0 35 1505 3 99 1 38 0 35 1571 3 87 1 34 0 35 1604 29 18 3 43 2 97 0 87 1294 3 15 2 73 ...

Page 74: ...1 13 0 33 884 3 33 1 10 0 33 910 28 18 3 06 2 60 0 85 680 2 93 2 49 0 85 714 2 81 2 39 0 85 748 2 70 2 30 0 85 782 28 20 3 19 2 33 0 73 714 3 06 2 23 0 73 757 2 96 2 16 0 73 774 2 86 2 09 0 73 808 28 22 3 32 2 02 0 61 740 3 20 1 95 0 61 786 3 12 1 90 0 61 808 2 99 1 82 0 61 842 28 24 3 48 1 71 0 49 774 3 35 1 64 0 49 816 3 28 1 61 0 49 842 3 17 1 55 0 49 884 28 26 3 59 1 33 0 37 816 3 48 1 29 0 37...

Page 75: ...0 33 1012 2 87 0 95 0 33 1033 28 18 2 55 2 17 0 85 833 2 34 1 99 0 85 884 2 25 1 91 0 85 901 28 20 2 68 1 95 0 73 867 2 50 1 82 0 73 910 2 41 1 76 0 73 935 28 22 2 83 1 73 0 61 901 2 65 1 62 0 61 952 2 56 1 56 0 61 969 28 24 2 99 1 47 0 49 935 2 81 1 38 0 49 978 2 73 1 34 0 49 999 28 26 3 15 1 16 0 37 969 2 96 1 10 0 37 1012 2 87 1 06 0 37 1033 29 18 2 55 2 27 0 89 833 2 34 2 08 0 89 884 2 25 2 00...

Page 76: ... 0 53 1099 27 24 3 89 1 60 0 41 1010 3 74 1 55 0 41 1066 3 65 1 51 0 41 1099 3 54 1 46 0 41 1154 27 26 4 00 1 17 0 29 1066 3 89 1 14 0 29 1121 3 83 1 12 0 29 1154 3 71 1 09 0 29 1188 28 18 3 41 2 77 0 81 888 3 26 2 65 0 81 932 3 13 2 55 0 81 977 3 02 2 45 0 81 1021 28 20 3 55 2 46 0 69 932 3 41 2 36 0 69 988 3 31 2 29 0 69 1010 3 19 2 21 0 69 1055 28 22 3 70 2 12 0 57 966 3 57 2 04 0 57 1027 3 48 ...

Page 77: ... 1 68 0 53 1177 2 96 1 58 0 53 1243 2 86 1 52 0 53 1265 27 24 3 34 1 38 0 41 1221 3 13 1 29 0 41 1277 3 05 1 26 0 41 1304 27 26 3 51 1 03 0 29 1265 3 31 0 97 0 29 1321 3 20 0 94 0 29 1349 28 18 2 84 2 31 0 81 1088 2 61 2 12 0 81 1154 2 51 2 04 0 81 1177 28 20 2 99 2 07 0 69 1132 2 78 1 93 0 69 1188 2 68 1 86 0 69 1221 28 22 3 16 1 81 0 57 1177 2 96 1 69 0 57 1243 2 86 1 64 0 57 1265 28 24 3 34 1 5...

Page 78: ... 0 31 1394 4 48 1 38 0 31 1434 28 18 4 11 3 40 0 83 1072 3 94 3 26 0 83 1126 3 78 3 13 0 83 1179 3 64 3 01 0 83 1233 28 20 4 29 3 03 0 71 1126 4 11 2 91 0 71 1193 3 99 2 82 0 71 1219 3 85 2 72 0 71 1273 28 22 4 46 2 62 0 59 1166 4 31 2 53 0 59 1240 4 20 2 47 0 59 1273 4 03 2 36 0 59 1327 28 24 4 69 2 19 0 47 1219 4 52 2 11 0 47 1286 4 41 2 06 0 47 1327 4 27 1 99 0 47 1394 28 26 4 83 1 68 0 35 1286...

Page 79: ... 0 31 1595 3 87 1 19 0 31 1628 28 18 3 43 2 84 0 83 1313 3 15 2 61 0 83 1394 3 03 2 50 0 83 1420 28 20 3 61 2 55 0 71 1367 3 36 2 38 0 71 1434 3 24 2 29 0 71 1474 28 22 3 82 2 24 0 59 1420 3 57 2 10 0 59 1501 3 45 2 02 0 59 1528 28 24 4 03 1 88 0 47 1474 3 78 1 77 0 47 1541 3 68 1 72 0 47 1575 28 26 4 24 1 47 0 35 1528 3 99 1 38 0 35 1595 3 87 1 34 0 35 1628 29 18 3 43 2 97 0 87 1313 3 15 2 73 0 8...

Page 80: ...1092 3 52 1 07 0 31 1124 28 18 3 23 2 67 0 83 840 3 09 2 55 0 83 882 2 97 2 45 0 83 924 2 86 2 36 0 83 966 28 20 3 37 2 37 0 71 882 3 23 2 28 0 71 935 3 14 2 21 0 71 956 3 03 2 13 0 71 998 28 22 3 51 2 05 0 59 914 3 38 1 98 0 59 971 3 30 1 93 0 59 998 3 16 1 85 0 59 1040 28 24 3 69 1 71 0 47 956 3 55 1 65 0 47 1008 3 47 1 61 0 47 1040 3 36 1 56 0 47 1092 28 26 3 80 1 31 0 35 1008 3 69 1 27 0 35 10...

Page 81: ... 96 0 31 1250 3 04 0 93 0 31 1276 28 18 2 70 2 22 0 83 1029 2 48 2 04 0 83 1092 2 38 1 96 0 83 1113 28 20 2 83 2 00 0 71 1071 2 64 1 86 0 71 1124 2 54 1 79 0 71 1155 28 22 3 00 1 75 0 59 1113 2 81 1 64 0 59 1176 2 71 1 58 0 59 1197 28 24 3 16 1 47 0 47 1155 2 97 1 38 0 47 1208 2 89 1 34 0 47 1234 28 26 3 33 1 15 0 35 1197 3 14 1 08 0 35 1250 3 04 1 05 0 35 1276 29 18 2 70 2 33 0 87 1029 2 48 2 14 ...

Page 82: ... 58 0 35 1269 4 35 1 54 0 35 1305 28 18 4 00 3 49 0 87 976 3 83 3 34 0 87 1025 3 67 3 21 0 87 1074 3 54 3 09 0 87 1122 28 20 4 17 3 14 0 75 1025 4 00 3 01 0 75 1086 3 88 2 92 0 75 1110 3 74 2 82 0 75 1159 28 22 4 34 2 74 0 63 1061 4 18 2 65 0 63 1129 4 08 2 58 0 63 1159 3 91 2 48 0 63 1208 28 24 4 56 2 34 0 51 1110 4 39 2 25 0 51 1171 4 28 2 20 0 51 1208 4 15 2 13 0 51 1269 28 26 4 69 1 84 0 39 11...

Page 83: ... 37 0 35 1452 3 76 1 33 0 35 1482 28 18 3 33 2 91 0 87 1196 3 06 2 67 0 87 1269 2 94 2 57 0 87 1293 28 20 3 50 2 64 0 75 1244 3 26 2 46 0 75 1305 3 15 2 37 0 75 1342 28 22 3 71 2 35 0 63 1293 3 47 2 20 0 63 1366 3 35 2 12 0 63 1391 28 24 3 91 2 01 0 51 1342 3 67 1 88 0 51 1403 3 57 1 83 0 51 1434 28 26 4 11 1 62 0 39 1391 3 88 1 52 0 39 1452 3 76 1 48 0 39 1482 29 18 3 33 3 04 0 91 1196 3 06 2 79 ...

Page 84: ...he room temperature is approaching the target temperature Operation state Indication Operation Indicator Operation Indicator lamp The operation indicator at the right side of the indoor unit indicates the operation state INDOOR UNIT DISPLAY SECTION The following indication does not depend on the shape of lamp 11 1 COOL OPERATION 1 Press OPERATE STOP ON OFF button OPERATION INDICATOR lamp of the in...

Page 85: ...m temperature Set temperature and initial room temperature in dry mode 2 Indoor fan speed control Indoor fan operates at the set speed by FAN SPEED CONTROL button In Auto fan speed becomes Low 3 The operation of the compressor and indoor outdoor fan MU A07 A09 A12WV MUH A07 A09 A12WV MUX A10 A19 A20 A25 A26WV Compressor operates by room temperature control and time control Indoor fan and outdoor f...

Page 86: ...eed Difference between room temperature and set tem perature during operation Operation time chart Example Thermostat Indoor fan Outdoor fan Compressor ON 8 min 1 min 4 min 3 min ON OFF OFF OFF OFF OFF ON ON ON ON ON ON OFF OFF OFF 2 Cold air prevention control 1 When the compressor is not operating 1 if the temperature of indoor coil thermistor RT12 is 0 C or less the fan stops 2 if the temperatu...

Page 87: ...more or when the set speed has been changed this control is released and the fan speed is the set speed Time condition Indoor fan speed less than 2 minutes Low 2 minutes to 4 minutes Med more than 4 minutes High NOTE During high pressure protection and for 4 min and 15 sec after high pressure protection defrosting of outdoor heat exchanger is not detected by the defrost thermistor RT61 Refer to 11...

Page 88: ...ion time chart Example 4 Defrosting MUH A07 A09 A12WV Defrosting of outdoor heat exchanger is controlled by DEICER P C board with detection by the defrost thermistor RT61 1 Starting conditions of defrost When all conditions of a c are satisfied the defrosting operation starts a The compressor cumulative operation time exceeds 40 minutes without the defrosting operation working b RT61 reads 3 C or ...

Page 89: ... by the initial room tem perature at start up of the operation as shown on the right table Example Previous operation COOL mode of I FEEL CONTROL or COOL mode Once the mode is fixed the mode does not change by room temperature afterwards Under the ON TIMER operation mode is determined according to the room temperature at set time the opera tion starts When the system is stopped on the remote contr...

Page 90: ... In DRY mode of I FEEL CONTROL the set temperature doesn t change To raise the set temperature 1 2 degrees C To lower the set temperature 1 2 degrees C 4 The initial set temperature is decided by the initial room temperature 11 5 1 COOL mode of I FEEL CONTROL 1 Thermostat control Thermostat control is as same as COOL OPERATION 11 1 1 2 Indoor fan speed control Indoor fan speed control is as same a...

Page 91: ...and off to show the fan motor abnormality Refer to page 109 11 7 AUTO VANE OPERATION 1 Vane motor drive These models are equipped with a stepping motor for the horizontal vane The rotating direction speed and angle of the motor are controlled by pulse signals approx 12V transmitted from indoor microprocessor 2 The horizontal vane angle and mode changes as follows by pressing the VANE CONTROL butto...

Page 92: ...C to 18 C 15 C to 17 C 15 C or less 5 8 11 14 17 20 23 Horizontal blow time sec 20 17 14 11 8 2 23 8 ECONO COOL operation ECONOmical operation When the ECONO COOL button is pressed in COOL mode set temperature is automatically set 2 C higher than that in COOL mode Also the horizontal vane swings in various cycle according to the temperature of indoor heat exchanger RT12 SWING operation makes you f...

Page 93: ...in the following cases or the set time may deviate and other malfunctions may occur A power failure occurs The circuit breaker functions 11 9 EMERGENCY TEST OPERATION In case of test run operation or emergency operation use the EMERGENCY OPERATION switch on the front of the indoor unit Emergency operation is available when the remote controller is missing has failed or the batteries of remote cont...

Page 94: ... ON OPEN OFF CLOSE ON CLOSE OFF OPEN SOLENOID VALVE MUX A20WV E1 INDOOR UNIT MC1 MC2 MF61 21R3 21R4 21RB COMPRE SSOR OUTDOOR FAN MOTOR A ON OFF OFF B ON ON OFF OFF ANY UNIT ON OFF ON OFF ON ON OFF OFF C ON OFF ON OFF OFF ON OFF ON OFF ON OFF ACTUATOR ON OFF ON OFF ON CLOSE OFF OPEN ON OPEN OFF CLOSE ON OPEN OFF CLOSE SOLENOID VALVE MUX A10WV E1 INDOOR UNIT MC MF61 21R BALANCE 21R1 21R2 COMPRE SSOR...

Page 95: ... temperature thermistor RT6B Gas pipe temperature thermistor RT6A Indoor Unit A Indoor Unit A Outdoor fan motor MF61 x 61 x 62 Defrost thermistor RT62 LEV A LEV B Outdoor unit control microprocessor Compressor primary current Compressor secondary current Fin temperature thermistor RT65 R V coil 21S4 Input signal Output signal Highpressure protect thermistor RT68 MXZ 18WV E1 11 11 INVERTER MULTI SY...

Page 96: ... C62 and C63 smoothing capacitor are used in this inverter circuit in order to supply direct current stably since the charge current to a capacitor turns into intermittent current in the stable circuit with only a capacitor power factor of power supply gets worse and harmonics ingredient also becomes large Then AFM active filter module and L reactor have been arranged on direct current circuit and...

Page 97: ...inus pole of direct current circuit so that the waveform of actual current flowing to service power supply is synchronized with the phase of power supply voltage waveform detected by AFM 11 11 3 Function of main parts 11 12 Optimal voltage control The purpose of optimal voltage control is to operate the compressor at optimal voltage that meets the load detected by the power factor of the compresso...

Page 98: ...n adjustment in accordance with intake super heat discharge temperature is included in standard opening w1 Note LEV opening in each frequency at DRY operation and COOL operation is the same However velocity and compressor operation frequency controls are different See 11 2 Operational frequency range As far as the indoor unit velocity control goes refer to DRY operation in MICROPROCESSOR CONTROL i...

Page 99: ...le below Suction superheat S H LEV opening correction pulse more than 12 10 to12 8 to 10 6 to 8 6 or less 7 5 4 3 0 Superheat LEV opening correction pulse more than 9 6 to9 3to 6 6 or less 10 8 4 0 1 Suction super heat MIN gas pipe temperature thermistor Evaporation temperature thermistor 2 Each correction w 1 Each gas pipe temperature thermistor Evaporation temperature thermistor w 1 Perform this...

Page 100: ... 2 Target discharge temperature 2 to Target discharge temperature 5 Target discharge temperature 5 to Target discharge temperature 8 Target discharge temperature 8 to Target discharge temperature 11 Target discharge temperature 11 or less COOL 10 4 2 1 0 1 2 5 8 HEAT 8 2 1 1 0 1 1 2 6 DRY Hz Min Max Rated Min Max Defrost Rated Note When the fan speed of indoor unit is totally Low notch the maximum...

Page 101: ...as controlled Control details LEV opening of indoor unit not operating is controlled to be 80 pulse Control finish status The control finishes either as follows However the LEV opening is considered to be 59 pulse When it passed 60 seconds since the control has started When the discharge temperature is 90 or less Fan speed is switched according to the number of operating indoor unit and the compre...

Page 102: ...d as follows Refer to page 124 Set time 1 minute 1 second Set time 3 minutes 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 How to modify the remote controller P C board Remove batteries before modification The board has a print as shown below NOTE For remodelling take out the bat teries and push the OPERATE ...

Page 103: ...ed by the initial room temperature AUTO RESTART FUNCTION is OFF when the units are shipped from the factory 1 2 1 2 1 2 SW2 SW2 1 2 Outdoor unit MUH MXZ type Set 2 switch downside Outdoor unit MU MUX type Set 2 switch upside NOTE If the indoor outdoor connecting wire is incorrectly connected on the terminal block the unit does not operate normally If a ground is incorrect it may cause an electric ...

Page 104: ...NOT pull the lead wires MSC A07WV MU A07WV MUH A07WV MUX A10WV MUX A25WV MSC A09WV MU A09WV MUH A09WV MUX A19WV MUX A26WV MSC A12WV MU A12WV MUH A12WV MUX A20WV E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 4 How to replace batteries Weak batteries may cause the remote controller malfunction In this case replace the batteries to operate the remote controller normally NOTE If the RESET button is not pr...

Page 105: ...mistor in outdoor unit 7 time flash Cause Outdoor unit Trouble of outdoor control system Check room temperature thermistor and indoor coil thermis tor Refer to Test point diagram and voltage on page 124 Refer to A Check of indoor fan motor on page 112 MUH A07 A09 A12WV Refer to H Check of outdoor thermistor on page 118 MUH A07 A09 A12WV Replace the deicer P C board MUH A07 A09 A12WV 1 time flash C...

Page 106: ...ompressor See page 121 When cooling heat exchanger of non operating indoor unit frosts When heating non operating indoor unit gets warm M Check of LEV See page 121 When cooling dew drops in the non operating indoor unit Check of mis piping When heating room does not get warm N Check of inverter compressor See page 121 Check mis piping shortage of capacity Refer to indicator list on page 108 109 OF...

Page 107: ... on of 52C relay by POWER turning on When serial signal from out door unit stops for 4 to 5 sec onds Detect Indoor coil room tem perature thermistor short or open circuit every 8 seconds during operation When rotational frequency feedback pulse signal is not emit during 12 second indoor fan operation When the defrost thermistor shorts or opens after the com pressor start up Check point Check switc...

Page 108: ...power module 5 times Goes out High pressure protection When high pressure protect thermistor detects 69 or more 3 times Goes out Discharge temperature overheat protection When the discharge temperature thermistor detects 116 or above Protection will be released at 100 or below 4 times Goes out Fin temperature overheat protection When the fin temperature thermistor detects 87 or above 4 times Goes ...

Page 109: ...cooling When indoor pipe temperature falls to 6 C or below during cooling 3 times Lighting Discharge temperature protection When the discharge temperature exceeds 104 C 4 times Lighting Low discharge temperature protection When the state with low discharge temperature of which 37 C or below in COOL and 35 C or below in HEAT for 20 minutes 5 times Lighting High pressure protection When high pressur...

Page 110: ... circuit 4 02 4 92Ω MUH A09WV MUH A12WV Normal MU A07WV 3 41 4 18Ω 5 41 6 63Ω 2 99 3 67Ω 2 46 3 01Ω 2 96 3 63Ω C R C S Abnormal Open or short circuit 4 02 4 92Ω MU A09WV MU A12WV Abnormal Open or short circuit MU A12WV Normal MUH A07WV 311 381Ω 282 347Ω 265 325Ω 293 359Ω WHT BLK BLK RED Abnormal Open or short circuit MUH A09 A12WV P INNER PROTECTOR Color of lead wire Color of lead wire 3 2 P Part ...

Page 111: ...tester Part temperature 10 C 40 C R V coil Measure the resistance using a tester Part temperature 10 C 40 C Linear expansion valve LEV WHT RED YLW BRN ORN BLU Lead wire color Normal WHT RED RED ORN YLW BRN BRN BLU Abnormal Open or short circuit 37 4Ω 53 9Ω P Inner protector FUSE BLK RED WHT Part name Outdoor fan motor MF MF61 INNER FUSE MUX A10WV 145 C OPEN INNER PROTECTOR MUX A19 A20 A25 A26WV 14...

Page 112: ...remote controller button is pressed Is the voltage approx 4V DC Replace the indoor electronic control P C board Replace the receiver P C board No 5V or 0V DC No wCheck the remote controller is exclusive for this air conditioner A A Check of indoor fan motor Is soldered point of the connector correctly soldered Is resistance 0 short circuit or open circuit Yes 0 or Yes No Yes No Turn OFF the power ...

Page 113: ...ate Yes Yes Is there 230V AC between 3 on the compressor contactor 52C and N on the outdoor terminal block TB1 Operate the unit in COOL or HEAT mode by pressing the EMERGENCY OPERATION switch 3 minute time delay works Test run operation operates for 30 minutes Outdoor fan motor doesn t operate No Rectify the indoor and outdoor connecting wire Rectify the connecting wire Check the compressor and co...

Page 114: ... unit No Short both terminal of fuse F61 Yes Is the resistance 0 between the fuse F61 and the terminal of CN903 Replace the outdoor control P C board Yes Replace the fuse F61 No No Check the indoor unit Yes Turn OFF the power supply to outdoor unit Disconnect connecting wire of X521 and X522 from outdoor control P C board Insulate terminal of connecting wires to prevent contact of other parts Turn...

Page 115: ...ly again Is there 12V DC between 1 2 on the outdoor terminal block TB2 No Yes Compressor and or outdoor fan motor doesn t stop E E Check of outdoor unit Does compressor stop No Yes Is there 230V AC between 3 on the compressor contactor 52C and N on the outdoor terminal block TB1 Replace the deicer P C board Yes OK No Does outdoor fan motor stop Replace the deicer P C board Yes OK No Rectify the co...

Page 116: ... ON the power supply and operate the indoor unit in COOL mode by pressing the EMERGENCY OPERATION switch Unit operates HEAT mode even if it is set to COOL mode w First measure the resistance of R V coil to confirm it is disconnected or is not short circuit F F Check of R V coil MUH A07 A09 A12WV After 3 minutes does the unit operate in COOL mode OK Yes Yes No Replace the deicer P C board No Replac...

Page 117: ... Replace the indoor electronic control P C board Turn ON the power supply outdoor unit Is there 230V AC between outdoor terminal block L N TB1 No Check the outdoor power supply power supply cord and connection Yes Turn ON the power supply indoor unit No Replace the deicer P C board Yes No Make the wiring between CN730 on the deicer P C board and outdoor terminal block correct Replace the deicer P ...

Page 118: ... unit Model Terminal block Connector for solenoid coil control MUX A10WV MUX A26WV A B B C A B C D TB2 TB2 TB3 TB4 TB2 TB3 TB4 TB5 21R1 21R2 21R3 CN85 21R4 CN86 21R1 CN83 21R2 CN84 21R3 CN85 21R4 CN86 21R 21RB CN81 21RA CN82 21RB CN81 w1 MUX A10WV MUX A20WV MUX A26WV If the pipe of indoor unit that does not operate is cooled though the combination of pipe and connecting wire is correct check the s...

Page 119: ...erminal block Replace the outdoor electronic control P C board Recheck a connected circumstance of the indoor outdoor unit connecting wire Turn on power supply No Yes Yes No No Yes Yes No Yes Replace the reactor Start Check the connecting of main circuit parts Is there voltage of 230V AC in the power supply terminal block Is there voltage of 325V DC across the smoothing capacity C61 Check the powe...

Page 120: ...oard and measure the resistance of R V coil to check the integrity Start 1 Disconnect the lead wire leading to the compressor 2 3 minutes after turning on the power supply start EMERGENCY OPERATION in COOL mode Is there voltage of 230V AC between pin1 and pin 2 at connector CN912 1 Turn off power supply of indoor and outdoor unit and disconnect the connector CN851 in the outdoor electronic control...

Page 121: ...tween each connector leading to the compressor U BLK V WHT V WHT W RED W RED U BLK Output voltage COOL 150V 58Hz HEAT 150V 58Hz Is voltage output W1 Turn off power supply of indoor and outdoor unit and measure the compressor winding resistance between the compressor terminals Is there resistance of 0 53 to 0 66 between the each terminals Replace the outdoor electronic control P C board Return the ...

Page 122: ...tor connector Replace the noise filter P C board O O Check of outdoor unit thermistor Normal Yes No Abnormal Reconnect the connector CN661 CN662 and CN663 and disconnect the lead wire leading to the compressor 3 minutes after turning on the power supply start EMERGENCY OPERATION Start Disconnect the connector in the outdoor electronic control P C board see below table and measure the resistance of...

Page 123: ...eration mode The other unit indicates as shown in the figure below When the above situation occurs set all the indoor units to the same mode turn OFF the indoor units and then turn them back ON Though the top of the indoor unit sometimes gets warm this does not mean malfunction The reason is that the refrigerant gas continuously flows into the indoor unit even while it is not operating OPERATION I...

Page 124: ...11 Indoor coil thermistor RT12 Timer short mode point JPG JPS Refer to page 102 Room temperature thermistor RT11 Indoor coil thermistor RT12 0 0 10 20 30 40 10 20 30 40 50 60 Emergency operation switch Indoor fan motor 230 V AC 1 sets the Auto restart function ON OFF 2 switches over MU MUX type MUH MXZ type 5V DC 12V DC Temperature Resistance k SW2 Refer to page Power monitor receiver P C board R1...

Page 125: ...30V AC CN721 R V coil 230V AC F61 Fuse 2A 250V CN661 1 2 Defrost thermistor RT61 12V DC J204 J101 R601 5 10VDC 5V DC J205 J101 Power supply input 230V AC NR61 Varistor Jumper wire for change in defrost setting JRF JRG Refer to page 102 Defrost interval time short pin JPDS JPSG Refer to page 102 ...

Page 126: ...ck To terminal block To compressor MC1 To fan motor To fan capacitor To indoor unit A Solenoid coil 21R1 To indoor unit B Solenoid coil 21R2 To solenoid coil 21RB To solenoid coil 21RA To indoor unit D Solenoid coil 21R4 To indoor unit C Solenoid coil 21R3 W From indoor unit A 12V DC 1 3 W From indoor unit B 12V DC 1 3 W From indoor unit C 12V DC 1 3 W From indoor unit D 12V DC 1 3 W In case of MU...

Page 127: ...hermistor RT65 127 MXZ A18WV Outdoor Electronic control P C board E1 230V AC 50Hz Input Gas pipe temperature A thermistor RT6A Gas pipe temperature B thermistor RT6B CN 661 Defrost temperature thermistor RT62 Discharge temperature thermistor RT61 Evaporation temperature thermistor RT63 High pressure protect thermistor RT68 CN 662 CN663 Fin temperature thermistor RT65 CN721 Room A Linear expansion ...

Page 128: ...50Hz Input CN911 Outdoor Fan Fan speed High 230V AC 230V AC 50Hz Output F912 FUSE 3 15A 250V NR63 VARISTOR CN912 R V Coil 230V AC CN911 Outdoor Fan Fan speed Low 230V AC MXZ A18WV Outdoor Noise filter P C board E1 ...

Page 129: ...the bottom of electrical box 3 Open the power monitor receiver P C board holder and remove the power monitor receiver P C board 4 Remove the screw of the electrical cover and the electrical cover 5 Remove the screw of the V A clamp and the V A clamp 6 Remove the screw of the cord clamp and the cord clamp 7 Remove the screw of the terminal block 8 Remove the screw of the ground wire 9 Pull out indo...

Page 130: ...embly remove the nozzle assembly 4 Remove the screws of the vane motor disconnect the vane motor connector 5 Remove the vane motor 5 Removing the indoor fan motor and the line flow fan 1 Remove the front panel Refer to 1 2 Remove the electrical box Refer to 3 3 Pull out the drain hose from the nozzle assembly remove the nozzle assembly Refer to 4 4 Remove the screw of the lead cover and lead cover...

Page 131: ...Remove the top panel 7 Remove the cabinet Photo 1 Photo 3 Screws of the top panel Service panel Screws of the service panel Screws of the top panel Screws of the cabinet Screws of the cabinet Photo 2 Screws of the front panel and motor support Outdoor fan capacitor Compressor capacitor Terminal block 2 Removing the electrical parts 1 Remove the service panel and the cabinet Refer to 1 2 Remove the...

Page 132: ...Propeller fan nut Outdoor fan motor Screws of the outdoor fan motor Lead clamps Hook Suction pipe Discharge pipe 4 Removing the compressor 1 Remove the cabinet Refer to 1 2 Remove the relay panel 3 Remove the soundproof felt 4 Remove the terminal cover on the compressor 5 Disconnect lead wires from the glass terminal of the com pressor 6 Recover gas from the refrigerant circuit 7 Disconnect the we...

Page 133: ... from the insides 6 Remove the top panel 7 Remove the cabinet 2 Removing the deicer P C board 1 Remove the service panel and the cabinet 2 Disconnect all the connectors and the terminals on the deicer P C board 3 Remove the deicer P C board Photo 4 Terminal block Screws Deicer P C board Photo 1 Photo 3 Screws of the top panel Service panel Screws of the service panel Screw of the top panel Screws ...

Page 134: ...e the cabinet Refer to 1 2 Remove the relay panel 3 Remove the soundproof felt 4 Remove the terminal cover on the compressor 5 Disconnect lead wires from the glass terminal of the com pressor 6 Recover gas from the refrigerant circuit 7 Disconnect the welded part of the discharge pipe 8 Disconnect the welded part of the suction pipe 9 Remove nuts fixing the compressor 10 Remove the compressor NOTE...

Page 135: ...ctors Outdoor fan motor Solenoid coil 21R 21R1 21R2 Photo 1 Photo 2 Photo 4 Set screws of the front panel and motor support Screws of the cabinet Screws of the top panel Screws of the cabinet Propeller fan nut Outdoor fan motor Hook Screws of the service panel Screws of the top panel Propeller fan Set screws of the outdoor fan motor Lead wire Lead clamp Outdoor fan motor connector Solenoid coil co...

Page 136: ...Remove the cabinet Refer to 1 2 Remove the relay panel 3 Remove the soundproof felt 4 Remove the terminal cover on the compressor 5 Disconnect lead wires from the glass terminal of the com pressor 6 Recover gas from the refrigerant circuit 7 Disconnect the welded part of the discharge pipe 8 Disconnect the welded part of the suction pipe 9 Remove nuts fixing the compressor 10 Remove the compressor...

Page 137: ...he top panel 3 Remove the service panel 4 Remove the top panel 5 Remove the screws of the front panel 6 Remove the front panel 7 Remove the screws of the back panel 8 Remove the back panel Photo 2 Photo 1 Photo 3 Top panel Front panel Set screws of the front panel Set screws of the front panel Set screws of the top panel Service panel Set screws of the ser vice panel Set screws of the back panel B...

Page 138: ...on the propeller fan and the motor shaft cut section Set the propeller fan in position by using the cut on the shaft and the mark on the propeller fan 4 Removing the outdoor fan motor 1 Remove the cabinet Refer to 1 2 Remove the propeller fan Refer to 3 3 Remove the clamp of outdoor fan motor lead wire and disconnect the outdoor fan motor connector 4 Remove the screws fixing the outdoor fan motor ...

Page 139: ... when the inner pressure rises by heat 6 Removing the compressor C 1 Remove the cabinet Refer to 1 2 Remove the relay panel Refer to 2 3 Remove the screws fixing back panel 4 Remove the back panel 5 Remove the soundproof felt 6 Remove the terminal cover on the compressor 7 Disconnect lead wires from the compressor 8 Recover gas from the refrigerant circuit 9 Disconnect the welded part of the disch...

Page 140: ...door connecting wire and power supply cable 3 Remove the compressor connector on the compressor side 4 Remove the connectors for fan motor LEV and thermistor R V coil from the electronic control P C board 5 Remove the screws of the inverter assembly 6 Remove the inverter assembly Photo 3 Photo 4 Photo 2 Compressor connector Screws of the front panel Screws of the top panel Screws of the front pane...

Page 141: ...t sink 7 Remove the hooks fixing the electronic control P C board 8 Disconnect all the connectors and the terminal on the electronic control P C board 9 Remove the electronic control P C board 4 Removing the fan motor 1 Remove the top panel service panel and front panel 2 Remove the fan motor connector CN911 from the noise filter P C board Remove the inverter assembly and then lead wires from cabl...

Page 142: ...top panel service panel and front panel 2 Remove the connector coming out of the compressor 3 Remove the compressor connector coming out of the electronic control P C board Fig 1 4 Remove the electronic control P C board 5 Remove the screws fixing the heat sink from the electronic control P C board Tightening torque IPM M4 1 18 I0 2 Nm DS M3 0 78 I0 2 Nm AFM M3 5 0 98 I0 2 Nm Caution Be sure to ke...

Page 143: ...ire and power supply cable 3 Remove the top panel service panel front panel and back panel 4 Remove the inverter assembly 5 In case of removing 4 way valve detach four brazed joints first Photo 10 6 Remove the terminal cover then pull out the lead wire from the compressor terminal Remove the soundproof material 7 Detach brazed joints of compressor suction and discharge pipes Photo 10 8 Remove the ...

Page 144: ...1 2 1 2 2 1 1 1 1 Including No 3 4 5 2PCS SET 2PCS SET MAC 1300FT MAC 1800DF Remarks Part No No Part Name MSC A07WV E1 WH 1 1 2 1 2 2 1 1 1 1 1 1 2 1 2 2 1 1 1 1 1 1 1 1 1 1 E02 749 426 E02 527 083 11 12 REMOTE CONTROLLER REMOTE CONTROLLER HOLDER MSC A09WV E1 WH MSC A12WV E1 WH 8 See page 127 1 W 9 2 4 MSC A07WV WH MSC A09WV WH MSC A12WV WH E1 E1 E1 3 10 W 15 2 ACCESSORY AND REMOTE CONTROLLER 15 1...

Page 145: ... FAN MOTOR MOTOR BAND TERMINAL BLOCK FAN MOTOR RUBBER MOUNT FAN MOTOR RUBBER MOUNT INDOOR COIL THERMISTOR LINE FLOW FAN BEARING MOUNT BEARING MOUNT THERMAL FUSE 3 15A AUTO RESTART AUTO RESTART AUTO RESTART RC4V19 RC4V19 2PCS SET 2PCS SET F11 NR11 NR12 MV RT11 MF MF TB RT12 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 2 1 1 1 1 Symbol...

Page 146: ... 742 662 E02 336 245 E02 339 233 E02 440 233 E02 336 515 E02 336 297 E02 156 936 E02 408 936 E02 441 936 OUTDOOR HEAT EXCHANGER CABINET GRILLE OUT COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR RUBBER SET BASE STOP VALVE GAS STOP VALVE GAS STOP VALVE LIQUID SERVICE PANEL BACK PANEL BACK PANEL MOTOR SUPPORT TOP PANEL CAPILLARY TUBE CAPILLARY TUBE CAPILLARY TUBE RN092VHSHT RN099VHSHT RN135VHSHT 3RUBBER...

Page 147: ...OR CAPACITOR TERMINAL BLOCK TERMINAL BLOCK COMPRESSOR CONTACTOR SURGE ABSORBER RA6V23 RA6V33 1 5 440V AC 2 0 440V AC 20 440V AC 25 440V AC 30 440V AC 3P 2P MF MF C2 C2 C1 C1 C1 TB1 TB2 52C DSAR 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 No Part No Part name Remarks Symbol in Wiring Diagram Q ty unit MU A07WV E1 MU A09WV E1 MU A12WV E1 1 2 3 4 6 5 15 6 OUTDOOR UNIT ELECTRICAL PARTS AND FUNCTIO...

Page 148: ...IQUID 4 WAY VALVE 4 WAY VALVE SERVICE PANEL BACK PANEL MOTOR SUPPORT MOTOR SUPPORT TOP PANEL CAPILLARY TUBE CAPILLARY TUBE CAPILLARY TUBE CAPILLARY TUBE CAPILLARY TUBE CAPILLARY TUBE CAPILLARY TUBE CAPILLARY TUBE CHECK VALVE RN092VHSHT RN104VHSHT RN135VHSHT 3RUBBERS SET 9 52 12 7 6 35 3 0x 1 4x800 3 0x 1 4x500 3 0x 1 4x1050 3 0x 1 4x1300 3 0x 1 6x600 3 0x 1 6x400 3 0x 1 6x1350 3 0x 1 6x350 MC MC M...

Page 149: ...USE VARISTOR RA6V23 RA6V33 20 440V AC 25 440V AC 30 440V AC 3P 2P 250V 2A MF MF C1 C1 C1 DSAR TB1 TB2 RT61 21S4 F61 NR61 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 E02 444 704 E02 440 705 12 13 DRAIN SOCKET DRAIN CAP 1 2 1 2 1 2 No Part No Remarks Symbol in Wiring Diagram Part name 2PCS SET Q ty unit MUH A07WV E1 MUH A09WV E1 MUH A12WV E1 1 2 4 3 8 7 6 5 15 8 OUTDOOR UNIT EL...

Page 150: ...492 E02 759 492 E02 024 936 E02 289 936 E02 642 936 OUTDOOR HEAT EXCHANGER CABINET GRILLE OUT COMPRESSOR COMPRESSOR RUBBER SET BASE STOP VALVE GAS STOP VALVE LIQUID SERVICE PANEL BACK PANEL MOTOR SUPPORT TOP PANEL SOLENOID COIL SOLENOID COIL SOLENOID COIL SOLENOID VALVE 21R1 21R2 SOLENOID VALVE 21R CAPILLARY TUBE CAPILLARY TUBE CAPILLARY TUBE RN092VHSHT 3RUBBERS SET 9 52 6 35 3 0x 1 4x1000 MC 21R ...

Page 151: ...FAN CAPACITOR RELAY COMPRESSOR CONTACTOR TERMINAL BLOCK TERMINAL BLOCK SURGE ABSORBER COMPRESSOR CAPACITOR FUSE FUSE HOLDER RA6V33 2 0 440V AC 4P FIGURE A 3P FIGURE B 20 450V AC 250V 2A MF TB3 C2 X1 X2 52C TB2 TB1 DSAR C1 F61 F62 1 1 1 1 2 1 1 1 1 1 2 2 No Part No Part name Remarks Symbol in Wiring Diagram Q ty unit MUX A10WV E1 MUX A10WV E1 15 11 OUTDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS...

Page 152: ...152 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 6 17 MUX A19WV MUX A20WV MUX A25WV MUX A26WV 15 12 OUTDOOR UNIT STRUCTURAL PARTS E1 E1 E1 E1 18 These figures show MUX A20WV ...

Page 153: ...1R4 MUX A19 WV E1 1 1 1 1 1 2 1 1 1 1 6 1 1 1 2 1 1 1 MUX A20 WV E1 MUX A25 WV E1 MUX A26 WV E1 1 1 1 1 1 2 2 2 6 1 2 2 1 1 1 E02 636 297 E02 636 515 E02 726 515 E02 756 630 E02 759 630 E02 636 232 E02 736 232 E02 527 521 E07 001 009 E02 742 900 E02 743 900 E02 744 900 E02 746 900 E02 756 936 E02 199 936 E02 757 936 E02 289 936 E02 408 936 E02 140 936 E02 176 937 E02 077 937 E02 726 936 E02 075 50...

Page 154: ... 1 1 1 1 2 1 1 1 RA6V60 RA6V60 4P FIGURE A 3P FIGURE B 3P 3 0 440V AC 4 0 440V AC 3 15A 20 450V AC 25 450V AC 30 450V AC MF61 MF61 TB2 TB2 TB3 TB3 TB1 C61 C61 F61 C2 C2 C1 C2 C1 C1 C2 DSAR TB4 NR61 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 E02 756 301 E02 726 301 E02 214 501 E02 756 444 E02 757 444 E02 758 444 E02 759 444 E02 637 374 E02 637 377 E02 756 374 E02 138 351 E02 064 351 E02 127 382 ...

Page 155: ...RT62 RT63 RT68 RT65 F912 NR63 1 1 1 1 1 1 1 1 1 1 1 No Parts Name Symbol in Wiring Diagram Parts No Q ty unit MXZ A18WV Remarks E1 E02 735 337 E02 735 444 E02 735 374 E02 573 375 E02 735 241 E02 735 382 E02 735 306 E02 735 308 E02 735 450 E02 735 309 E02 735 385 20A 250VAC 3 15A 250V 2 7 4 9 1 3 5 6 8 Part numbers that are circled are not shown in the illustration 15 15 ACCESSORY 15 14 OUTDOOR UNI...

Page 156: ...CAPILLARY TUBE MF MC LEV A B 21S4 1 1 1 1 1 3 1 1 2 2 2 1 1 1 1 1 1 1 1 1 2 2 2 No Parts Name Symbol in Wiring Diagram Parts No Q ty unit MXZ A18WV Remarks RA6V49 3RUBBERS SET SNV 092FJYH 1 8O 0 6O750 3 0O 2 0O400 3 0O 1 8O600 E1 E02 527 521 E02 636 232 E07 001 009 E02 214 501 E02 735 301 E02 065 506 E02 735 900 E02 735 290 E02 735 661 E02 735 662 E02 735 640 E02 735 937 E02 735 961 E02 735 490 E0...

Page 157: ...n DEODORIZING FILTER every two weeks If the filter is particularly dirty clean the filter more often For cleaning soak the filter in warm water for a while and then wash and rinse it Dry the filter in the shade thoroughly When the filter color is still dark even after cleaning replace the filter with a new one Replace the filter at least once a year DEODORIZING FILTER and AIR CLEANING FILTER can b...

Page 158: ...ributed in Feb 2003 No OB307 REVISED EDITION A 17 Distributed in Dec 2002 No OB307 17 Made in Japan New publication effective Feb 2003 Specifications subject to change without notice HEAD OFFICE MITSUBISHI DENKI BLDG 2 2 3 MARUNOUCHI CHIYODA KU TOKYO100 8310 JAPAN ...

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Mitsubishi Electric MSC-A07WV, Service Manual

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