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Mitsubishi Electronics MSZ-FD09NA manuel d'utilisation

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Table des matières du manuel d’utilisation

  • Page 1

    SER VICE MANUAL CONTENTS 1. TECHNICAL CHANGES ······································· 3 2. P ART NAMES AND FUNCTIONS ····················· 4 3. SPECIFICA TION ················································ 5 4. OUTLINES AND DIMENSIONS ··?[...]

  • Page 2

    2 Revision A: • 3. SPECIFICA TION has been corrected.[...]

  • Page 3

    3 1 TECHNICAL CHANGES MSZ-FD09NA MSZ-FD12NA 1. New model.[...]

  • Page 4

    4 4 P ART NAMES AND FUNCTIONS 2 MSZ-FD09NA MSZ-FD12NA i-see control operation i-see Sensor constantly measure floor/wall temperature to automatically adjust to the set temperature by estimating the temperature actually perceived by a person inside the room ("sensible temperature"). AREA lamp indicates AREA setting In AREA setting, the hor[...]

  • Page 5

    5 5 3 SPECIFICA TION Indoor model MSZ-FD09NA MSZ-FD12NA Power supply V , phase, Hz 208/230 , 1 , 60 Max. fuse size (time delay)/ Disconnect switch A1 5 Min. circuit ampacity A 1.0 1.0 Fan motor F .L.A 0.76 Air fl ow Low - Med. - High HEA T Dry CFM 166 - 240 - 381 166 - 240 - 420 COOL Dry (Wet) CFM 162 - 226 - 339 (144 - 202 - 307) 162 - 226 - 381 [...]

  • Page 6

    6 6 3-2. OUTLET AIR SPEED AND COVERAGE RANGE ● The air coverage range is the figure up to the position where the air speed is 1 ft./sec., when air is blown out horizon- tally from the unit properly at the High speed position. The coverage range should be used only as a general guideline since it var- ies according to the size of the room and furn[...]

  • Page 7

    7 7 4 OUTLINES AND DIMENSIONS Unit : inch MSZ-FD09NA MSZ-FD12NA 30-7/8 31-3/8 1/2 1-7/8 2-3/16 11 - 5 / 8 27-1/16 3/4 2-5/16 6-1/4 1-1 1/16 2-1 1/16 2-3/16 3-15/16 1/2 10-1/8 1/4 Installation plate Piping 2-3/16 Drain hose 1-1 1/16 3-3/8 3-13/16 Air out Indoor unit 2-1/8 1-5/8 2-1/2 Installation plate 7/16 X 1 Oblong hole 8-7/8 8-7/8 8-3/8 10 13-9/[...]

  • Page 8

    8 5 WIRING DIAGRAM MSZ-FD09NA MSZ-FD12NA[...]

  • Page 9

    9 REFRIGERANT SYSTEM DIAGRAM 6 MSZ-FD09NA MSZ-FD12NA Refrigerant flow in cooling Refrigerant flow in heating Unit:inch Indoor heat exchanger Flared connection Room temperature thermistor RT1 1 Flared connection Refrigerant pipe 3/8 (with heat insulator) Refrigerant pipe 1/4 (with heat insulator) Indoor coil thermistor RT12 (main) Indoor coil thermi[...]

  • Page 10

    10 7 SER VICE FUNCTIONS 7-1. TIMER SHORT MODE For service, set time can be shortened by short circuit of JPG and JPS the indoor electronic control P .C. board. The time will be shortened as follows. (Refer to 9-7.) Set time : 1-minute 1-second Set time : 3-minute 3-second (It takes 3 minutes for the compressor to start operation. However , the star[...]

  • Page 11

    11 NOTE: • The operation settings are memorized when 10 seconds have passed after the indoor unit was operated with the remote controller . • If main power is turned OFF or a power failure occurs while AUTO ST ART/ST OP timer is active, the timer setting is cancelled. • If the unit has been of f with the remote controller before power failure[...]

  • Page 12

    12 8 MICROPROCESSOR CONTROL WIRELESS REMOTE CONTROLLER MSZ-FD09NA MSZ-FD12NA ON TIMER button CLOCK SET button TIME SET buttons FORW ARD button BACKW ARD button OFF TIMER button RESET button V ANE CONTROL button WIDE V ANE button (V ertical vane button) AREA button i-see button Signal transmitting section Operation display section OPERA TE/STOP (ON/[...]

  • Page 13

    13 8-1. COOL ( ) OPERA TION (1) Press OPERA TE/ST OP (ON/OFF) button. POWER lamp of the indoor unit turns on with a beep tone. (2) Select COOL mode with OPERA TION SELECT button. (3) Press TEMPERA TURE buttons (TOO W ARM or TOO COOL button) to select the desired temperature. The setting range is 61 ~ 88°F (16 ~ 31°C). 1. Coil frost prevention The[...]

  • Page 14

    14 8-4. AUTO CHANGE OVER ··· AUTO MODE OPERA TION Once desired temperature is set, unit operation is switched automatically between COOL and HEA T operation. Mode selection (1) Initial mode When unit starts the operation with AUTO operation from of f; • If the room temperature is higher than the set temperature, operation starts in COOL mode. [...]

  • Page 15

    15 (3) Positioning T o confirm the standard position, the vane moves until it touches the vane stopper . Then the vane is set to the selected angle. Confirming of standard position is performed in the following cases: (a) The operation starts or finishes (including timer operation). (b) The test run operation starts. (c) Standby mode (only during m[...]

  • Page 16

    16 ( 10 ) POWERFUL ( ) operation. The air conditioner automatically adjusts the fan speed and the set temperature, and operates the POWERFUL mode. The POWERFUL mode is automatically released 15 minutes after operation starts, and the operation mode returns to the mode prior to POWERFUL operation 2. V ertical vane (1) V ane motor drive These models [...]

  • Page 17

    17 8-6. i-see CONTROL OPERA TION The sensors constantly measure the room and floor/wall temperatures to automatically adjust to the set temperature by esti- mating the temperature actually perceived by a person inside the room (“sensory temperature”). Advantages · The air inside the room is conditioned quickly to a comfortable condition. · Th[...]

  • Page 18

    18 Indoor unit installation location and air-conditioning area ·Be sure to set the slide switch inside the remote controller to an appropriate position in accordance with the installed position of the indoor unit. If the switch is not set correctly , the air conditioner may not function properly . (Refer to "Remote controller in SERVICE FUNCT[...]

  • Page 19

    19 Operation and operating range i-see sensor moves 30 degrees from the center in both right and left side. i-see Sensor operates as follows in accordance with AREA setting made with the remote controller . “AUTO” in AREA setting; first turning to the LEFT for adjusting the position then ····· CENTER RIGHT CENTER LEFT CENTER ····· (Th[...]

  • Page 20

    20 8-8. TIMER OPERA TION 1. How to set the time (1) Check that the current time is set correctly . NOTE : T imer operation will not work without setting the current time. Initially “0:00 AM” blinks at the current time dis- play of TIME MONIT OR, so set the current time correctly with CLOCK SET button. How to set the current time (a) Press the C[...]

  • Page 21

    21 8-1 1. Changing temperature indication (°F/°C) 8-9. EMERGENCY/TEST OPERA TION In case of test run operation or emergency operation, use EMERGENCY OPERA TION switch on the right side of the indoor unit. Emergency operation is available when the remote controller is missing, has failed or the batteries of the remote controller run down. The unit[...]

  • Page 22

    22 9-1. CAUTIONS ON TROUBLESHOOTING 1. Before troubleshooting, check the following 1) Check the power supply voltage. 2) Check the indoor/outdoor connecting wire for miswiring. 2. T ake care of the following during servicing 1) Before servicing the air conditioner , be sure to turn off the unit first with the remote controller , and then after conf[...]

  • Page 23

    23 Outline of the function This air conditioner can memorize the abnormal condition which has occurred once. Even though LED indication listed on the troubleshooting check table (9-4.) disappears, the memorized failure details can be recalled. This mode is very useful when the unit needs to be repaired for the abnormality which doesn't recur .[...]

  • Page 24

    24 2. Indoor unit failure mode table POWER Abnormal point (Failure mode) Condition Correspondence Not lighted Normal — — 1-time fl ash every 0.5-second Room temperature thermistor The room temperature thermistor short or open circuit is detected every 8 seconds during op- eration. Refer to the characteristics of the room temperature thermistor[...]

  • Page 25

    25 9-3. INSTRUCTION OF TROUBLESHOOTING Indoor unit oper- ates. Outdoor unit doesn't operate. If blinking of OPERA TION INDI- CA T OR lamp cannot be checked, it can be checked with failure mode recall function. Indoor unit operates. Outdoor unit doesn't operate normally . Indoor unit doesn't receive the signal from remote controller .[...]

  • Page 26

    26 9-4. TROUBLESHOOTING CHECK T ABLE Before taking measures, make sure that the symptom reappears for accurate troubleshooting. When the indoor unit has started operation and the following detection method has detected an abnormality (the first detection after the power ON), the indoor electronic control P .C. board turns OFF the indoor fan motor w[...]

  • Page 27

    27 AREA R POWER L No. Abnormal point Operation indicator lamp Symptom Condition Correspondence 1 MXZ type Operation mode setting POWER lamp is lighted. AREA lamps fl ash. 2.5-second OFF Outdoor unit operates but indoor unit does not operate. The operation mode of the each indoor unit is differently set to COOL (includes DRY) and HEA T at the same [...]

  • Page 28

    28 28 9-5. TROUBLE CRITERION OF MAIN P ARTS MSZ-FD09NA MSZ-FD12NA Part name Check method and criterion Figure Room temperature therm- istor (RT1 1) Indoor coil thermistor (RT12, R T13) Measure the resistance with a tester . Refer to 9-7. "T est point diagram and voltage", "Indoor electronic control P .C. board", the chart of the[...]

  • Page 29

    29 29 A Check of indoor fan motor 9-6. TROUBLESHOOTING FLOW The indoor fan motor error has occurred, and the indoor fan doesn't operate. T urn OFF the power supply . Is there any foreign matter that interferes the rotation of the line fl ow fan? Ye s No Remove the foreign matter and adjust the line fl ow fan. Pay careful attention to the hig[...]

  • Page 30

    30 30 B Check of remote controller and indoor electronic control P .C. board Check if the remote controller is exclusive for this air conditioner . Does the unit operate with the remote controller? OK Ye s No (Not clear) Replace the batteries. (Refer to 9-1.4.) Press OPERA TE/STOP (ON/OFF) button on the remote controller . Is LCD display on the rem[...]

  • Page 31

    31 31 C Check of indoor electronic control P .C. board and indoor fan motor T urn OFF the power supply . Remove indoor fan motor connector CN21 1, vane motor connector CN151 and the i-see Sensor motor connector CN1 10 from the indoor electronic control P .C. board and turn ON the power supply . Does the unit operate with the remote controller? Does[...]

  • Page 32

    32 32 D How to check miswiring and serial signal error T urn OFF the power supply . Is there rated voltage in the power supply? Ye s No T urn ON the power supply . Check the power supply . Is there rated voltage between outdoor terminal block S1 and S2? No Check the wiring. Press EMERGENCY OPERA TION switch once. Does AREA-L lamp light up? <Con [...]

  • Page 33

    33 33 E Electromagnetic noise enters into TV sets or radios Ye s Is the unit grounded? No Ground the unit. Ye s Is the distance between the antennas and the indoor unit within 9.91 ft., or is the distance between the antennas and the outdoor unit within 9.91 ft.? No Extend the distance between the antennas and the indoor unit, and/or the antennas a[...]

  • Page 34

    34 MSZ-FD09NA MSZ-FD12NA Indoor electronic control P .C. board 9-7. TEST POINT DIAGRAM AND VOL T AGE Room temperature thermistor (RT1 1) Indoor coil thermistor (RT12, RT13) T emperature (°F) Resistance (k Ω ) 32 50 68 86 104 122 140 Release of Auto restart function Solder the Jumper wire JR07 (Refer to 7-3.) 12 VDC V aristor (NR1 1) 5 VDC Room te[...]

  • Page 35

    35 2. Power monitor receiver P .C. board 3. Monitor P .C. board[...]

  • Page 36

    36 MSZ-FD09NA MSZ-FD12NA NOTE : T urn OFF power supply before disassembling. OPERA TING PROCEDURE PHOTOS 1. Removing the panel (1) Hold both sides of the front panel and lift the front panel until it is level. Pull the hinges forward to remove the front panel. (2) Remove the horizontal vanes. (3) Remove the screw caps of the panel. Remove the screw[...]

  • Page 37

    37 OPERA TING PROCEDURE PHOTOS 2. Removing the electronic control P .C. board, the power monitor receiver P .C. board, i-see Sensor , SW P .C. board and the terminal block (1) Remove the panel (refer to 1.) and the corner box. (2) Remove the screw of the conduit cover . Remove the con- duit cover and then the indoor/outdoor connecting wire. (See Ph[...]

  • Page 38

    38 OPERA TING PROCEDURE PHOTOS 3. Removing the electrical box (1) Remove the panel (Refer to 1.) and the corner box. (2) Remove the indoor/outdoor connecting wire, the sensor holder , the electrical cover and the ground wire. (Refer to 2.) (3) Disconnect the following connectors on the electronic con- trol P .C. board; CN21 1 (Fan motor) CN1 12 (In[...]

  • Page 39

    39 OPERA TING PROCEDURE PHOTOS 6. Removing the horizontal vane motor (1) Remove the nozzle assembly . (Refer to 4.) (2) Remove the screws of the horizontal vane motor unit, and pull out the horizontal vane motor unit. (3) Remove the screws of the horizontal vane motor unit cover . (4) Remove the horizontal vane motor from the horizontal vane motor [...]

  • Page 40

    HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAP AN Copyright 2008 MITSUBISHI ELECTRIC ENGINEERING CO.,L TD Distributed in Mar . 2008. No. OBH497 REVISED EDITION-A 7 Distributed in Jan. 2008. No. OBH497 7 Made in Japan New publication, effective Mar . 2008 Specifications subject to change without notice. TM[...]