Mitsubishi Electric Mr. Slim MSY-A15NA Service Manual Download Page 9

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REFRIGERANT SYSTEM DIAGRAM

MSZ-A09NA
MSZ-A12NA

Indoor

heat

exchanger

Flared connection

Room temperature
thermistor
RT11

Indoor coil
thermistor
RT13(sub)

Flared connection

Refrigerant pipe

[

3/8

(with heat insulator)

Refrigerant pipe

[

1/4

(with heat insulator)

Indoor coil
thermistor
RT12(main)

Refrigerant flow in cooling

Refrigerant flow in heating

MSZ-A15NA MSY-A15NA
MSZ-A17NA MSY-A17NA

Indoor
heat
exchanger

Room temperature
thermistor
RT11

Refrigerant pipe

[

1/2

(with heat insulator)

Flared connection

Indoor coil

thermistor

RT12(main)

Refrigerant pipe

[

1/4

(with heat insulator)

Distributor

MSZ-A24NA
MSY-A24NA

Indoor
heat
exchanger

Room temperature
thermistor
RT11

Refrigerant pipe

[

5/8

(with heat insulator)

Flared connection

Indoor coil

thermistor

RT12(main)

Refrigerant pipe

[

1/4

(with heat insulator)

Distributor

Unit:inch

Indoor coil
thermistor
RT13(sub)

OB450-1.qxp 06.3.29 9:32 AM Page 9

Summary of Contents for Mr. Slim MSY-A15NA

Page 1: ...ESSOR CONTROL 42 Wireless type Models MSZ A09NA MSZ A12NA MSZ A15NA MSZ A17NA MSZ A24NA MSY A15NA MSY A17NA MSY A24NA No OB450 SPLIT TYPE HEAT PUMP AIR CONDITIONERS MSZ A09NA MSY A15NA MSZ A12NA MSY A17NA MSZ A15NA MSZ A17NA INDOOR UNIT Outdoor unit service manual MUZ A NA Series OB451 MXZ A NA Series OB444 NOTE This service manual describes technical data of the intdoor units RoHS compliant produ...

Page 2: ...A MSH17TN MSZ A17NA MSH24WN MSZ A24NA MS15TN MSY A15NA MS17TN MSY A17NA MS24WN MSY A24NA 1 Control method between indoor and outdoor has been changed 2 Indoor fan motor has been changed 3 Signal of remote controller has been changed It is not available for conventional models ...

Page 3: ...Air cleaning filter Anti Allergy Enzyme Filter Blue bellows type Emergency operation switch Emergency operation switch Operation indicator lamp Remote control receiving section Operation Indicator lamp MSZ A24NA MSY A24NA ACCESSORIES 1 2 3 4 5 6 7 8 Installation plate Installation plate fixing screw 4 o 25 mm Remote controller holder Fixing screw for 3 o 3 5 o 1 6 mm Black Battery AAA for remote c...

Page 4: ...ty Fan motor Airflow Low Med High Moisture removal Sound level Low Med High Cond drain connection O D Dimensions Weight REMOTE CONTROLLER Control voltage by built in transformer V phase Hz A A F L A CFM CFM pt h dB A in in in in Ib 1 0 0 76 381 342 328 293 268 240 5 1 23 1 0 0 76 381 342 328 293 268 240 4 7 23 381 314 254 34 40 45 34 38 44 34 40 45 381 314 254 34 40 46 34 38 44 34 40 46 White 208 ...

Page 5: ... A24NA MSZ A17NA MSZ A24NA Rated voltage Guaranteed Voltage Model Min 198V Max 253V 208V 230V 208 230V 1phase 60Hz 3 2 OUTLET AIR SPEED AND COVERAGE RANGE 2 OPERATION 78 Function Cooling Heating Standard temperature Maximum temperature Minimum temperature Maximum humidity Standard temperature Maximum temperature Minimum temperature DB F 80 95 67 70 80 70 WB F 67 71 57 60 67 60 Indoor DB F 95 115 1...

Page 6: ...O D Liquid line 1 4 19 11 16 Gas line 3 8 16 15 16 Insulation 1 3 8 O D 3 4 I D 6 1 8 6 1 8 7 8 1 3 4 13 3 16 12 5 8 1 5 8 8 7 16 10 1 8 1 11 16 8 7 16 1 8 11 5 16 2 3 4 2 3 16 2 3 16 2 3 16 8 7 8 8 7 8 9 16 10 3 4 9 3 16 Wall hole 2 9 16 Indoor unit Installation plate 7 16x13 16 Oblong hole 7 16x1 Oblong hole 7 8 hole MSZ A09NA MSY A15NA MSZ A12NA MSY A17NA MSZ A15NA MSZ A17NA ...

Page 7: ... 9 15 16 31 1 8 2 3 16 42 1 16 43 5 16 12 13 16 Air out Air in Insulation 1 1 8 Drain hose 5 8 Connected part O D Installation plate Wall hole 3 Wireless remote controller Installation plate Indoor unit Liquid line 1 4 19 11 16 Gas line 5 8 16 15 16 Insulation 1 15 16 O D 1 1 4 I D MSZ A24NA MSY A24NA Unit inch ...

Page 8: ...8 5 WIRING DIAGRAM MSZ A09NA MSY A15NA MSZ A12NA MSY A17NA MSZ A15NA MSZ A17NA MSZ A24NA MSY A24NA ...

Page 9: ...SY A15NA MSZ A17NA MSY A17NA Indoor heat exchanger Room temperature thermistor RT11 Refrigerant pipe 1 2 with heat insulator Flared connection Flared connection Indoor coil thermistor RT12 main Refrigerant pipe 1 4 with heat insulator Distributor MSZ A24NA MSY A24NA Indoor heat exchanger Room temperature thermistor RT11 Refrigerant pipe 5 8 with heat insulator Flared connection Flared connection I...

Page 10: ...unit The indoor unit will 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 has turned off or the power supply has 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 ...

Page 11: ... 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 starti...

Page 12: ... 2 Press RESET button with tip end of ball point pen or the like and then use the remote controller 1 Remove the front lid and insert batteries Then reattach the front lid INFORMATION FOR MULTI SYSTEM AIR CONDITIONER OUTDOOR UNIT MXZ series Multi system air conditioner can connect two or more indoor units with one outdoor unit Unit won t operate in case the total capacity of indoor units exceeds t...

Page 13: ...ing pattern and confirm the abnormal point with the indoor unit failure mode table 8 2 2 Make sure to check at least two consecutive blinking cycles W2 Turn ON the power supply Preparation of the remote controller 1 While pressing both OPERATION SELECT button and TOO COOL button on the remote controller at the same time press RESET button 2 First release RESET button And release the other two butt...

Page 14: ... Refer to the characteristics of the main indoor coil thermistor the sub indoor coil thermistor 8 7 Indoor coil thermistor When the indoor coil thermistor short or open circuit is detected every 8 seconds during operation 3 time flash 2 5 second OFF Refer to 8 6 D How to check mis wiring and serial signal error Serial signal When the serial signal from outdoor unit is not received for a maximum of...

Page 15: ...istor Left lamp 3 time flash Cause Indoor unit Trouble of indoor fan motor Left lamp 5 time flash Cause Outdoor unit Outdoor power system abnormality Left lamp 6 time flash Cause Outdoor unit Trouble of thermistor in outdoor unit Left lamp 7 time flash Cause Outdoor unit Trouble of outdoor control system Refer to 8 6 D How to check of mis wiring and serial signal error Check room temperature therm...

Page 16: ...ot operate Indoor unit and outdoor unit do not operate Left lamp flashes 5 time flash 2 5 second OFF Left lamp flashes 6 time flash 2 5 second OFF Indoor unit and outdoor unit do not operate Indoor unit and outdoor unit do not operate Indoor unit and outdoor unit do not operate Other abnormality An abnormality other than above mentioned is detected Confirm the abnormality in detail using the failu...

Page 17: ...le criterion of main parts Part name Figure Check method and criterion Indoor fan motor MF Measure the resistance with a tester Refer to 8 7 Test point diagram and voltage Indoor electronic control P C board the chart of thermistor Room temperature thermistor RT11 Indoor coil thermistor RT12 MAIN RT13 SUB Horizontal vane motor MV MSZ A09 12 15 17NA MSY A15 17NA Normal BRN other one Measure the res...

Page 18: ...12 seconds after EMERGENCY OPERATION switch is pressed If more than 12 seconds passes by turn OFF the power supply and turn ON it again then measure the voltage w 1 Measure the voltage between CN211 1 and 3 2 Measure the voltage between CN211 5 and 3 Is there 294 325V DC between CN211 1 and 3 and does the voltage between CN211 5 and 3 rise to the range of 3 to 6V DC within 12 seconds after EMERGEN...

Page 19: ...troller Reinstall the unit away from lights Attach a filter on receiving part Switch ON the remote controller Is LCD display on the the remote controller visible Remove the batteries then set them back and press RESET button Refer to 8 1 4 Check if the unit operates with the remote controller Yes Does the unit operate with the remote controller Yes OK No not clear Yes No No Replace the receiver P ...

Page 20: ...connector Short open circuit Replace the indoor fan motor Short open circuit Replace the horizontal vane motor and the indoor electronic control P C board Turn OFF the power supply Check both parts side and pattern side of the indoor electronic control P C board visually Replace the indoor electronic control P C board Are the varistor NR11 burnt and the fuse F11 blown Be sure to check both the fus...

Page 21: ...urn OFF the power supply Remove the short circuit between outdoor terminal block S2 and S3 Turn ON the power supply Is there amplitude of 10 to 20V DC between outdoor terminal block S2 and S3 Confirmation of serial signal Is there rated voltage between indoor terminal block S1 and S2 Confirmation of power voltage Replace the indoor electronic control P C board Replace the inverter P C board or the...

Page 22: ...tdoor unit of the air conditioner indoor outdoor wiring grounding wire antennas wiring from antennas receiver 5 Electric field intensity of the broadcast station affected by the electromagnetic noise 6 Presence or absence of amplifier such as booster 7 Operation condition of air conditioner when the electromagnetic noise enters in 1 Turn OFF the power supply once and then turn ON the power supply ...

Page 23: ...7 3 208 230V AC Fuse F11 Indoor coil thermistor RT12 MAIN 12 RT13 SUB 34 CN112 Horizontal vane motor CN151 8 7 Test point diagram and voltage SW P C board Power monitor receiver P C board 12V DC 5V DC Power supply input Indoor fan motor CN211 Varistor NR11 Room temperature thermistor RT11 Timer short mode point JPG JPS Refer to 7 1 5 3 6V DC 415V DC 3 Fiducial terminal of cathode side on measur in...

Page 24: ...re to JR07 Refer to 6 3 208 230V AC Fuse F11 Indoor coil thermistor RT12 MAIN RT13 SUB Horizontal vane motor CN151 SW P C board Receiver P C board 12V DC 5V DC 5 3 6V DC 415V DC 3 Fiducial terminal of cathode side on measur ing high voltage DC 1294 325V DC Power supply input Indoor fan motor CN211 Varistor NR11 Room temperature thermistor RT11 Timer short mode point JPG JPS Refer to 7 1 Vertical v...

Page 25: ...ut locking mechanism can be detached by pulling it out Check the shape of the terminal before detaching Terminal with locking mechanism Detaching points Connector Sleeve Locking lever 9 1 MSZ A09NA MSZ A12NA MSZ A15NA MSZ A17NA MSY A15NA MSY A17NA OPERATING PROCEDURE PHOTOS Photo 1 1 Removing the panel 1 Remove the horizontal vane 2 Remove the screw caps of the panel Remove the screws See Photo 1 ...

Page 26: ...l out the electronic control P C board from the electrical box 12 Remove the ground wire connected to the heat exchanger from the electrical box See Photo 4 13 Unhook the catches of the electrical box and pull out the electrical box 14 Remove the screw of the terminal block cover and then remove the terminal block cover and the terminal block holder See Photo 5 15 Remove the terminal block by slid...

Page 27: ...corner box 2 Remove the switch holder and the electrical box Refer to 3 3 Remove the drain hose from the nozzle assembly and remove the nozzle assembly 4 Remove the screws fixing the motor bed See Photo 7 5 Loosen the screw fixing the line flow fan See Photo 8 6 Remove the motor bed together with fan motor and motor band 7 Release the hooks of the motor band and remove the motor band then pull out...

Page 28: ...lectronic control P C board forward little by little disconnect all the connectors from the board 9 Remove the electronic control P C board 10 Open the R L holder remove the receiver P C board and the display P C board Photo 3 3 Removing the electrical box 1 Remove the front panel Refer to 1 2 Remove the electrical cover Refer to 2 3 Disconnect the connector of the indoor coil thermistors 4 Discon...

Page 29: ...e the front panel Refer to 1 2 Remove the electrical box Refer to 3 3 Remove the drain hose from the nozzle assembly and remove the nozzle assembly 4 Remove the water cut 5 Slide the hole cover and remove the hole cover 6 Remove the hexagon socket set screw from the line flow fan 7 Remove the screws fixing the motor bed and remove the fan motor Be careful not to drop the fan motor because it is he...

Page 30: ...HIN AIR FILTER RIGHT AIR CLEANING FILTER CORNER BOX RIGHT INSTALLATION PLATE CONDUIT PLATE Including No 3 4 2PCS SET MAC 415FT E E02 A32 234 E02 A49 000 E02 913 067 E02 915 010 E02 915 100 E02 916 100 E02 A32 975 E02 913 970 E02 A49 978 1 1 1 1 E02 A54 426 E02 A49 426 E02 527 083 1 1 2 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1...

Page 31: ... UP DOWN AUTO RESTART AUTO RESTART AUTO RESTART AUTO RESTART AUTO RESTART AUTO RESTART RC0J30 MV TB RT11 RT12 RT13 RT12 RT13 MF No Part No Part name Remarks Symbol in Wiring Diagram Q ty unit 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 E02 751 509 E02 001 504 E02 897 702 E02 A54 235 E02 A56 235 E02 897 303 E02 913 040 E02 913 095 E02 A49 979 E02 A49 780 E02 A49 779 E02 913 375 E02 A54 452 E02 A55...

Page 32: ...ide catechin air filter 2 Remove the air cleaning filter Blue bellows type from the catechin air filter Replacement of the air cleaning filter 5 AIR CLEANING FILTER ANTI ALLERGY ENZYME FILTER AIR CLEANING FILTER removes fine dust of 0 01 micron from air by means of static electricity Normal life of AIR CLEANING FILTER is 1 year If AIR CLEANING FILTER is to be washed soak AIR CLEANING FILTER in wat...

Page 33: ...ING FILTER LAMP PANEL Symbol in Wiring Diagram Q ty unit Including No 5 6 4PCS SET 3PCS SET 1PC SET MAC 2300FT Remarks Part No No Part Name 1 2 3 4 5 6 7 8 9 10 1 1 1 4 3 1 2 1 2 1 1 1 1 4 3 1 2 1 2 1 7 INDOOR UNIT HEAT EXCHANGER 2 4 5 7 6 1 11 8 12 13 3 E02 A58 620 E02 527 666 E02 151 667 5 8 1 4 1 1 1 1 1 1 INDOOR HEAT EXCHANGER UNION GAS UNION LIQUID 11 12 13 7 INDOOR UNIT HEAT EXCHANGER 6 INDO...

Page 34: ...OOR COIL THERMISTOR VANE MOTOR SUPPORT SET RIGHT VANE MOTOR SUPPORT SET LEFT Symbol in Wiring Diagram Q ty unit RIGHT LEFT UP DOWN Remarks Part No No Part Name MF MV2 MV1 RT11 TB RT12 RT13 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 RC0J56 AUTO RESTART AUTO RESTART MSZ A24NA MSY A24NA W1 W2 W2 W1 Including FAN MOTOR RUBBER MOUNT W2 Including SW P C BOARD Part nu...

Page 35: ...of static electricity Normal life of AIR CLEANING FILTER is 1 year If AIR CLEANING FILTER is to be washed soak AIR CLEANING FILTER in water when showing dirt in lukewarm water and rinse it delicately without removing the filter from the frame about once every 3 months Clogged AIR CLEANING FILTER may reduce the air conditioner capacity or cause frost on the air outlet Do not remove or attach AIR CL...

Page 36: ...EFT CATECHIN AIR FILTER RIGHT AIR CLEANING FILTER CORNER BOX RIGHT INSTALLATION PLATE CONDUIT PLATE Including No 3 4 2PCS SET MAC 415FT E E12 A32 234 E12 A49 000 E12 913 067 E12 915 010 E12 915 100 E12 916 100 E12 A32 975 E12 913 970 E12 A49 978 1 1 1 1 E12 A54 426 E12 A49 426 E12 527 083 1 1 2 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 2 1 1 ...

Page 37: ...ESTART AUTO RESTART AUTO RESTART AUTO RESTART AUTO RESTART RC0J30 MV TB RT11 RT12 RT13 RT12 RT13 MF No Part No Part name Remarks Symbol in Wiring Diagram Q ty unit 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 RoHS G G G G G G G G G G G G G G G G G G G G G G G G G E12 751 509 E12 001 504 E12 897 702 E12 A54 235 E12 A56 235 E12 897 303 E12 913 040 E12 913 095 E12 A49 979 E12 A49 780 E12 A49 779 E12 ...

Page 38: ... right side catechin air filter 2 Remove the air cleaning filter Blue bellows type from the catechin air filter Replacement of the air cleaning filter 5 AIR CLEANING FILTER ANTI ALLERGY ENZYME FILTER AIR CLEANING FILTER removes fine dust of 0 01 micron from air by means of static electricity Normal life of AIR CLEANING FILTER is 1 year If AIR CLEANING FILTER is to be washed soak AIR CLEANING FILTE...

Page 39: ...PANEL Symbol in Wiring Diagram Q ty unit Including No 5 6 4PCS SET 3PCS SET 1PC SET MAC 2300FT Remarks Part No No Part Name 1 2 3 4 5 6 7 8 9 10 RoHS G G G G G G G G G G 1 1 1 4 3 1 2 1 2 1 1 1 1 4 3 1 2 1 2 1 7 INDOOR UNIT HEAT EXCHANGER 2 4 5 7 6 1 11 8 12 13 3 E12 A58 620 E12 527 666 E12 151 667 5 8 1 4 1 1 1 1 1 1 INDOOR HEAT EXCHANGER UNION GAS UNION LIQUID 11 12 13 G G G 7 INDOOR UNIT HEAT E...

Page 40: ...OTOR SUPPORT SET RIGHT VANE MOTOR SUPPORT SET LEFT Symbol in Wiring Diagram Q ty unit RIGHT LEFT UP DOWN Remarks Part No No G G G G G G G G G G G G G G G G G G G G G RoHS Part Name MF MV2 MV1 RT11 TB RT12 RT13 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 RC0J56 AUTO RESTART AUTO RESTART MSZ A24NA MSY A24NA W1 W2 W2 W1 Including FAN MOTOR RUBBER MOUNT W2 Including...

Page 41: ...of static electricity Normal life of AIR CLEANING FILTER is 1 year If AIR CLEANING FILTER is to be washed soak AIR CLEANING FILTER in water when showing dirt in lukewarm water and rinse it delicately without removing the filter from the frame about once every 3 months Clogged AIR CLEANING FILTER may reduce the air conditioner capacity or cause frost on the air outlet Do not remove or attach AIR CL...

Page 42: ...tton CLOCK set button TIME set buttons Forward button Backward button Off timer button RESET button POWERFUL button WIDE VANE button V MSZ A24 MSY A24 ertical vane button VANE button Horizontal vane button w These pictures show MSZ A24 MSZ A09NA MSZ A17NA MSY A15NA MSZ A12NA MSZ A24NA MSY A17NA MSZ A15NA MSY A24NA Operation Indicator lamp The operation indicator at the right side of the indoor uni...

Page 43: ...OP ON OFF button OPERATION INDICATOR lamp of the indoor unit turns on with a beep tone 2 Select COOL mode with OPERATION SELECT button 3 Press TEMPERATURE buttons TOO WARM or TOO COOL button to select the desired temperature The setting range is 61 88 F 2 High pressure protection In HEAT operation the compressor operational frequency is controlled by the temperature of the indoor heat exchanger to...

Page 44: ...al room temperature Initial set temperature 79 F or more 77 F to 79 F less than 77 F 75 F Initial room temperature minus 4 F Initial room temperature minus 4 F 1 4 The initial set temperature is decided by the initial room temperature 1 When the system is restarted with the remote controller the system operates with the previous set temperature regard less of room temperature at restart The set te...

Page 45: ...ard 1 In COOL and DRY operation 2 In HEAT operation MSZ MSZ A09 12 15 17 MSY A15 17 MSZ A24 MSY A24 Vane angle is fixed to Horizontal position or Angle 1 Vane angle is fixed to Angle 4 6 Dew prevention During COOL or DRY operation with the vane angle at Angle 2 4 A09 17 Angle 3 5 A24 when the compressor cumulative operation time exceeds 1 hour the vane angle automatically changes to Angle 1 for de...

Page 46: ...ioner starts the cooling or drying operation in approx 3 minutes for MSZ 10 ECONO COOL operation ECONOmical operation When ECONO COOL button is pressed in COOL mode set temperature is automatically set 3 6 F higher than that in COOL mode Also the horizontal vane swings in various cycle SWING operation makes you feel cooler than set temperature So even though the set temperature is higher than that...

Page 47: ...is pressed the set time decreases by 10 minutes 2 Cancel To cancel ON timer press ON TIMER button To cancel OFF timer press OFF TIMER button TIMER is cancelled and the display of set time disappears START STOP START STOP 5 WIDE MODE By selecting WIDE mode with WIDE VANE button indoor fan speed becomes faster than setting fan speed on the remote controller W The remote controller displays NOTE The ...

Page 48: ...inutes of operation is the test run operation This operation is for servicing The Indoor fan speed runs at High speed and the system is in continuous operation with thermostat ON After 30 minutes of test run operation the system shifts to EMERGENCY COOL HEAT MODE with a set temperature of 75 F The fan speed shifts to Med All protective operations such as the coil frost prevention works even in eme...

Page 49: ...3400 Lawrenceville Suwanee Road Suwanee Georgia 30024 Toll Free 800 433 4822 Toll Free Fax 800 889 9904 www mrslim com Specifications are subject to change without notice ...

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Mitsubishi Electric Mr. Slim MSY-A15NA, Service Manual

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