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Mitsubishi Electronics MSZ-GA35VA manual

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Table of contents for the manual

  • Page 1

    SER VICE MANUAL CONTENTS 1. TECHNICAL CHANGES ····································2 2. P ART NAMES AND FUNCTIONS ······················3 3. SPECIFICA TION·················································5 4. NOISE CRITERIA CUR VES ······[...]

  • Page 2

    2 1 TECHNICAL CHANGES MSZ-A09YV - ➔ MSZ-GA22V A - MSZ-A09YV - ➔ MSZ-GA25V A - MSZ-A12YV - ➔ MSZ-GA35V A - E1 E1 E1 E1 E1 E1 1. Indication of capacity has been changed.(BTU base ➔ kW base) 2. Control method between indoor and outdoor has been changed. 3. Power supply method has been changed (change to supply from outdoor unit). 4. Power supp[...]

  • Page 3

    3 P ART NAMES AND FUNCTIONS 2 INDOOR UNIT MSZ-GA22V A - MSZ-GA25V A - MSZ-GA35V A - E1 E1 E1 Line flow fan Air outlet Vertical vane Air inlet Display section Front panel Panel Heat exchanger Horizontal vane Operation section (When the front panel is opened) Remote controller Remote control receiving section Catechin air filter Air cleaning filter ([...]

  • Page 4

    4 ACCESSORIES 1 2 3 4 5 6 7 Installation plate Installation plate fixing screw 4 o 25 mm Remote controller holder Fixing screw for 3 3.5 o 1.6 mm (Black) Battery (AAA) for remote controller Wireless remote controller Felt tape (Used for left or left-rear piping) MSZ-GA22VA - E1 MSZ-GA25VA - E1 1 5 1 2 2 1 1 MSZ-GA35VA - E1 INDOOR UNIT ON-TIMER butt[...]

  • Page 5

    5 SPECIFICA TION 3 T3.15AL 250V MSBPC20M16 12V DC 250 " (at 25˚C) ERZV14D471 3P INDOOR UNIT Item Model Fuse Horizontal vane motor V aristor T erminal block MSZ-GA22V A - E1 MSZ-GA25V A - E1 MSZ-GA35V A - E1 (F1 1) (MV) (NR1 1) (TB) Specifications and rating conditions of main electric parts MSZ-GA25V A - E1 MSZ-GA22V A - E1 MSZ-GA35V A - E1 I[...]

  • Page 6

    6 4 NOISE CRITERIA CURVES 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 NC-60 NC-50 NC-40 NC-30 NC-20 NC-70 OCT A VE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR BAND CENTER FREQUENCIES, Hz T est conditions, Cooling : Dry-bulb temperature 27 : Wet-bulb temperature 19 : APPROXIMA TE THRESHOLD OF HEARING FOR CONTINUOUS NOISE COOL[...]

  • Page 7

    7 OUTLINES AND DIMENSIONS 5 MSZ-GA25V A - E1 Unit : mm INDOOR UNIT 155 155 335 320 41.5 215 42.5 214 3 287.5 70 55 55 55 225 225 or more 7 100 90 106 298 102 624.5 780 210 5 53.5 19 159 58 14 273.5 234 Air in Air out Wall hole [ 65 Indoor unit Installation plate Installation plate 11X20 Oblong hole 11X26 Oblong hole 10 or more 75 or more 66 or more[...]

  • Page 8

    8 6 WIRING DIAGRAM REFRIGERANT SYSTEM DIAGRAM 7 MSZ-GA22V A - MSZ-GA25V A - MSZ-GA35V A - E1 E1 E1 Indoor heat e xchanger Flared connection Room temperature thermistor R T11 Indoor coil thermistor R T13(sub) Flared connection Refrigerant flow in cooling Refrigerant flow in heating Refrigerant pipe [ 9.52 (with heat insulator) Refrigerant pipe [ 6.3[...]

  • Page 9

    9 SER VICE FUNCTIONS 8 8-2. P .C. BOARD MODIFICA TION FOR INDIVIDUAL OPERA TION A maximum of 4 indoor units with wireless remote controllers can be used in a room. In this case, to operate each indoor unit individually by each remote controller , P .C. boards of remote controller must be modified according to the number of the indoor unit. 8-1. TIM[...]

  • Page 10

    TROUBLESHOOTING 9 10 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 mis-wiring. 2. T ake care the following during servicing. 1) Before servicing the air conditioner , be sure to turn off the unit first with the remote controller , a[...]

  • Page 11

    11 2 1 Stopper Lock. Left Insert this end first. 3. T roubleshooting procedure 1) First, check if the OPERA TION INDICA TOR lamp on the indoor unit is flashing on and of f to indicate an abnormality . T o make sure, check how many times the abnormality indication is flashing on and off before starting service work. 2) Before servicing check that th[...]

  • Page 12

    12 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 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 . 9-2. F[...]

  • Page 13

    13 2. Indoor unit failure mode table NOTE: Blinking patterns of this mode differs from the ones of Troubleshooting check table(9-4.). 12-time flash 2.5-second OFF Replace the indoor electronic control P.C. board. Indoor control system When it cannot properly read data in the nonvolatile memory of the indoor electronic control P.C. board. 11-time fl[...]

  • Page 14

    14 Start Indoor unit operates. Outdoor unit doesn't operate. Indoor unit doesn't receive the signal from remote controller . OPERA TION INDICA TOR lamp on the indoor unit is flashing on and off. Outdoor unit operates in only T est Run operation. w 1 Outdoor unit doesn't operate even in T est Run operation. w 1 Indoor unit operates, w[...]

  • Page 15

    15 NOTE : When the indoor unit has started operation and the above 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 with OPERA TION INDICA TOR lamp flashing. No. 1 3 6 7 Symptom Operation indicator lamp Detection method Check point Left la[...]

  • Page 16

    16 OPERA TION INDICA TOR Not lighted Blinking Lighted OPERA TION INDICA TOR Not lighted Blinking Lighted NOTE : When the indoor unit has started operation and the above 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 with OPERA TION INDIC[...]

  • Page 17

    17 Check of indoor fan motor A When OPERA TION INDICA TOR lamp flashes 3-time. Indoor fan does not operate. w If 12 seconds or more passes after EMERGENCY OPERATION switch is pressed, the voltage mentioned above 2 goes 0V DC although the indoor electric control P.C. board is normal. Indoor electronic control P.C. board Pay careful attention to the [...]

  • Page 18

    18 Check of remote controller and receiver P .C. board B Indoor unit operates by pressing EMERGENCY OPERA TION switch, but does not operate with the remote controller . w Check if the remote controller is exclusive for this air conditioner . Y es Replace the batteries. (Refer to 9-1.4.) T urn on a radio to AM and press switch on the remote controll[...]

  • Page 19

    19 The unit does not operate with the remote controller . Also, OPERA TION INDICA TOR lamp does not light up by pressing EMERGENCY OPERA TION switch. Check of indoor electronic control P .C. board and indoor fan motor C Yes No w 1. The fan motor connector's 1 lead wire is red, whereas 3 is black. w 2. Connect "+" of the tester to fan[...]

  • Page 20

    20 How to check mis-wiring and serial signal error D When POWER lamp flashes ON and OFF in every 0.5-second. Outdoor unit does not operate. Is there rated voltage of 230V AC in the power supply? In 3 minutes after turning ON the power supply of the outdoor unit, does the LED on the inverter P.C. board repeat quick blinking "3.6-second-OFF and [...]

  • Page 21

    21 Check of installation of the horizontal vane E Start Replace the indoor electronic control P .C. board. Replace the interlock switch(Fan). Is the stopper of the horizontal vane locked to the indoor unit correctly? Y es No Is there resistance 0 " ? Relock the stopper of the horizontal vane to the indoor unit. Refer to 9-1.5. Y es Are all lam[...]

  • Page 22

    22 Electromagnetic noise enters into TV sets or radios F Replace the antennas. Replace the coaxial cable. No No No Yes Yes No No Yes Yes Yes Is the distance between the antennas and the indoor unit within 3m, or is the distance between the antennas and the outdoor unit within 3m? Is the distance between the TV sets or radios and the indoor unit wit[...]

  • Page 23

    23 Indoor coil thermistor [RT12 (MAIN), RT13 (SUB)] Room temperature thermistor (RT1 1) T emperature ( : ) Resistance (k " ) MSZ-GA22V A - MSZ-GA25V A - MSZ-GA35V A - Indoor electronic control P .C. board E1 E1 E1 Release of Auto restart function Solder the Jumper wire to JR07. (Refer to 8-3.) 230V AC Fuse(F1 1) Indoor coil thermistor RT12(MAI[...]

  • Page 24

    24 DISASSEMBL Y INSTRUCTIONS 10 (1) Slide the sleeve and check if there is a locking lever or not. (2) The terminal with this connector has the locking mechanism. 1 Slide the sleeve. 2 Pull the terminal while pushing the locking lever . 1 Hold the sleeve, and pull out the terminal slowly . The terminal which has the locking mechanism can be detache[...]

  • Page 25

    25 2. Removing the electronic control P .C. board, the power monitor receiver P .C. board, SW P .C. board and the terminal block (1) Remove the horizontal vane, the panel (Refer to 1.) and the corner box. (2) Remove the screw of V .A. clamp, and then the indoor/outdoor connecting wire. (See Photo 2.) (3) Remove the switch holder from the electrical[...]

  • Page 26

    26 OPERA TING PROCEDURE PHOTOS Photo 6 Photo 8 Screws of the left side of the heat exchanger 4. Removing the horizontal vane motor unit (1) Remove the horizontal vane and the panel. (Refer to 1.) (2) Remove the screws of the horizontal vane motor unit, and pull out the horizontal vane motor unit. (See Photo 5.) (3) Disconnect the connector from the[...]

  • Page 27

    27 P ARTS LIST 1 1 MSZ-GA22V A - (WH) MSZ-GA25V A - (WH) MSZ-GA35V A - (WH) 1 1-1. INDOOR UNIT STRUCTURAL P ARTS E1 E1 E1 No. Part No. Part name Remarks Symbol in Wiring Diagram Q'ty/unit 1 2 3 4 5 6 7 8 9 MSZ-GA22VA - E1 MSZ-GA35VA - E1 10 11 REMOTE CONTROLLER REMOTE CONTROLLER HOLDER KM05B BOX P ANEL ASSEMBL Y (WH) SCREW CAP FRONT P ANEL (WH[...]

  • Page 28

    28 1 1-3. INDOOR UNIT ELECTRICAL P ARTS AND FUNCTIONAL P ARTS MSZ-GA22V A - (WH) MSZ-GA25V A - (WH) MSZ-GA35V A - (WH) E1 E1 E1 4 2 5 3 9 ROOM TEMPERA TURE THERMISTOR V ARISTOR 1 6 22 1 1-4. INDOOR UNIT HEA T EXCHANGER 10 8 7 12 13 14 POWER MONITOR RECEIVER P .C. BOARD FUSE 15 16 SW P .C. BOARD 21 INTERLOCK SWITCH (F AN) 24 23 1 1 15 15 19 17 18 20[...]

  • Page 29

    29 BEARING MOUNT SLEEVE BEARING DRAIN HOSE NOZZLE ASSEMBL Y V ANE MOT OR UNIT (HORIZONT AL) INTERLOCK SWITCH(F AN) HORIZONT AL V ANE FUSE V ARIST OR POWER MONITOR RECEIVER P .C. BOARD HOLDER V .A. CLAMP TERMINAL BLOCK COVER TERMINAL BLOCK HOLDER TERMINAL BLOCK ELECTRONIC CONTROL P .C. BOARD W 1 ELECTRONIC CONTROL P .C. BOARD W 1 ELECTRONIC CONTROL [...]

  • Page 30

    30 12 OPTIONAL P ARTS Model Part No. E1 E1 MAC-415FT -E MSZ-GA22V A- MSZ-GA25V A- MSZ-GA35V A- E1 Air cleaning filter (Blue bellows type) (1) Remove the catechin air filter(left one) The air cleaning filter is not attached to the right side catechin air filter (2) Remove the air cleaning filter(Blue bellows type) from the catechin air filter . Repl[...]

  • Page 31

    31 OB378_--1qxp 05.1.17 12:55 Page 31[...]

  • Page 32

    HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, T OKYO100-8310, JAP AN C C Copyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO.,L TD Distributed in Jan. 2005. No. OB378 6 Made in Japan New publication, effective Jan. 2005 Specifications subject to change without notice. OB378_--1qxp 05.1.17 12:55 Page 32[...]