Mitsubishi Electric MSC-A07YV Service Manual Download Page 30

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Air cleaning filter
(White bellows type)

12-5. AIR CLEANING FILTER

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AIR CLEANING FILTER removes fine dust of 0.01 micron from air by means of static electricity.

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Normal life of AIR CLEANING FILTER is 4 months. However, when it becomes dirty, replace it as soon as possible.

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Clogged AIR CLEANING FILTER may reduce the air conditioner capacity or cause frost on the air outlet.

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DO NOT reuse AIR CLEANING FILTER even if it is washed.

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DO NOT remove or attach AIR CLEANING FILTER during unit operation.

Model

Part No.

MAC-1300FT

MSC-A07YV-
MSC-A09YV-
MSC-A12YV-

OB329-1.qxp 03.12.3 1:16 PM Page 30

Summary of Contents for MSC-A07YV

Page 1: ...C A09YV MSC A12YV E1 E1 E1 No OB329 HFC utilized R410A SPLIT TYPE AIR CONDITIONERS SPLIT TYPE HEAT PUMP AIR CONDITIONERS Indication of model name NOTE This manual describes technical data of indoor units As for outdoor units MU A07 A09 A12YV refer to the service manual OB330 As for outdoor units MUH A07 A09 A12YV refer to the service manual OB331 As for outdoor units MUX A10 A19 A20 A25 A26WV refe...

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Page 3: ...ction Display section Air cleaning filter white bellows type Front panel Power supply cord Panel Horizontal vane Operation section When the front panel is opened Remote controller Operation indicator lamp Remote control receiving section TECHNICAL CHANGES 1 MSC A07WV MSC A07YV MSC A09WV MSC A09YV MSC A12WV MSC A12YV 1 Design of front panel has changed 2 Air filter has changed to the catechin air f...

Page 4: ...4 5 6 7 8 ON OFF FAN TOO 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 Indication of remote controller model is on back OPERATION SELECT button FAN SPEED CONTROL button OFF TIMER button HR butt...

Page 5: ... E1 Single phase 230V 50Hz 10 0 17 35 90 0 17 RC4V19 LA WHT BLK 413 BLK RED 334 815O278O244 9 5 3 10 10 KP1A or KG3A Cooling 474 384 306 36 31 25 900 770 650 Heating 588 456 342 39 32 25 1 050 870 700 MSC A12YV E1 Single phase 230V 50Hz 10 0 19 40 92 0 19 RC4V19 KA WHT BLK 316 BLK RED 299 815O278O244 10 5 3 10 10 KP1A or KG3A Cooling 582 444 324 40 33 26 930 760 600 Heating 606 498 396 39 33 26 96...

Page 6: ... 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 WB19 Heating DB20 WB MSC A09YV 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...

Page 7: ...ontroller 162 19 58 81 5 81 5 41 2 5 42 271 231 5 4 5 81 5 133 5 326 326 Wall hole 65 Indoor unit Installation plate Unit mm MSC A12YV E1 INDOOR UNIT 244 242 218 5 258 81 5 81 5 41 42 2 5 17 5 161 5 161 5 326 326 5 7 or more 90 110 30 149 606 278 60 815 783 Power supply cord Lead to right 1 0m Lead to left 0 3m Air out Indoor unit Installation plate Wall hole 65 Installation plate Insulation 28 Dr...

Page 8: ...R ROOM TEMPERATURE THERMISTOR INDOOR COIL THERMISTOR SOLID STATE RELAY TERMINAL BLOCK SYMBOL C11 F11 MF MV SYMBOL TB T11 TRANSFORMER CIRCUIT BREAKER SR141 C11 RED WHT 3 6 5 BRN YLW GRY BLK 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 SU...

Page 9: ...te 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 8 1 COOL OPERATION 1 Press OPERATE STOP ON OFF button OPERATION INDICATOR lamp of the indoor unit turns on with a beep tone 2 Select COOL mode with the OPERATIO...

Page 10: ...emperature 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 A12YV MUH A07 A09 A12YV MUX A10 A19 A20 A22 A25 A26WV Compressor operates by room temperature control and time control Indoor fan and outdoor ...

Page 11: ...nce Fan speed 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...

Page 12: ... room temperature MUH MXZ type 25 or more 23 or more less than 25 less than 23 MU MUX type 25 or more more than13 less than 25 8 5 I FEEL CONTROL OPERATION 1 Press OPERATE STOP ON OFF button OPERATION INDICATOR lamp of the indoor unit turns on with a beep tone 2 Select I FEEL CONTROL mode with the OPERA TION SELECT button 3 The operation mode is determined by the initial room tem perature at start...

Page 13: ...ed Fuzzy control and works only in I FEEL CONTROL mode 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 8 5 1 COOL mode of I FEEL CONTROL 1 Thermostat control Thermostat control is as same as COOL OPERATION 8 1 1 2 Indoor fan...

Page 14: ...ff to show the fan motor abnormality Refer to page 21 8 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 button 3 Pos...

Page 15: ... 20 C 17 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 ma...

Page 16: ...llowing cases or the set time may deviate and other malfunctions may occur A power failure occurs The circuit breaker functions 8 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 controller run...

Page 17: ...hen press the RESET button 2 Remote controller model KP1A and KG3A are the same in terms of specification 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 Table 1 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 opera...

Page 18: ... 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 9 4 MU MUX TYPE MUH MXZ TYPE SWITCH OVER AND AUTO RESTART FUNCTION 2 AUTO RESTART FUNCTION When the indoor unit is controlled with the remote controller the operation mode set temperature and the fan speed are memorized by the indoor electronic cont...

Page 19: ... 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 NOTE1 If the RESET button is not pressed the remote controller may not operate correctly Insert the negative pole of the batteries first Check if the polarity of the batteries are correct HE AT FA N RESET button HE AT FA N 1 Remove the ...

Page 20: ...mistor and others MUH A07 A09 A12YV MXZ A18 A26 A32WV Replace the deicer P C board and others MUH A07 A09 A12YV MXZ A18 A26 A32WV 1 time flash Cause Outdoor Indoor unit Trouble of serial signal Refer to D How to check mis wiring and serial signal error When outdoor unit doesn t work on page 24 W1 1 Check indoor outdoor connecting wire 2 Refer to C Check of indoor electronic control P C board on pa...

Page 21: ... indoor electronic control P C board 3 Indoor coil thermistor Room temperature thermistor 8 MXZ type Outdoor refrigerant system error When the compressor operation has been in terrupted by LEV protection continuously 5 minutes the compressor stops operation Abnormal point Outdoor unit does not run Outdoor unit does not run Outdoor unit does not run Outdoor unit does not run Outdoor unit does not r...

Page 22: ...place the indoor fan motor Measure the resistance between the terminals with a tester Coil wiring temperature10 C 30 C Room temperature thermistor RT11 10 4 Trouble criterion of main parts Part name Indoor coil thermistor RT12 Indoor fan motor MF INNER FUSE 136i3 C CUT OFF Motor part Sensor part Check method and criterion Measure the resistance with a tester Part temperature 10 C 30 C Measure the ...

Page 23: ...ontrol P C board Replace the power monitor receiver P C board No 5V or 0V DC No wCheck the remote controller is exclusive for this air conditioner C C Check of indoor electronic control P C board Check the both parts side and pattern side of indoor electronic control P C board visually Replace the fuse Is fuse F11 blown Be sure to check both fuse and varistor in any case Replace the fan motor Repl...

Page 24: ...upply 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 C board Yes Yes Yes 3 min later what self check result is displayed ...

Page 25: ...ndoor coil thermistor RT12 Timer short mode point JPG JPS Refer to page 17 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 18 Power monitor receiver P C board R132...

Page 26: ...or receiver P C board NOTE In case of removing only indoor electronic control P C board work 3 is not necessary 1 Remove the front panel Refer to 1 2 Remove the power monitor receiver P C board holder from 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 cove...

Page 27: ...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 28: ... Wiring Diagram Q ty unit 1 1 2 1 2 2 2 1 1 Including No 3 4 5 2PCS SET 2PCS SET MAC 1300FT Remarks Part No No Part Name MSC A07YV E1 WH 1 1 2 1 2 2 2 1 1 1 1 2 1 2 2 2 1 1 1 1 1 1 1 1 E02 749 426 E02 527 083 10 11 REMOTE CONTROLLER REMOTE CONTROLLER HOLDER MSC A09YV E1 WH MSC A12YV E1 WH 1 W 8 2 4 MSC A07YV WH MSC A09YV WH MSC A12YV WH E1 E1 E1 3 9 W 12 2 ACCESSORY AND REMOTE CONTROLLER 12 1 INDO...

Page 29: ...OR FAN MOTOR MOTOR BAND TERMINAL BLOCK FAN MOTOR RUBBER MOUNT FAN MOTOR RUBBER MOUNT INDOOR COIL THERMISTOR LINE FLOW FAN BEARING MOUNT BEARING MOUNT VARISTOR 3 15A AUTO RESTART AUTO RESTART AUTO RESTART RC4V19 RC4V19 2PCS SET 2PCS SET F11 NR11 MV RT11 MF MF TB RT12 NR12 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 Symbol i...

Page 30: ...AIR CLEANING FILTER is 4 months However when it becomes dirty replace it as soon as possible Clogged AIR CLEANING FILTER may reduce the air conditioner capacity or cause frost on the air outlet DO NOT reuse AIR CLEANING FILTER even if it is washed DO NOT remove or attach AIR CLEANING FILTER during unit operation Model Part No MAC 1300FT MSC A07YV MSC A09YV MSC A12YV E1 E1 E1 ...

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Page 32: ...RIC ENGINEERING CO LTD Distributed in Dec 2003 No OB329 6 Made in Japan New publication effective Dec 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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