Mitsubishi Electronics MUZ-GB50VA manual

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Table of contents for the manual

  • Page 1

    SER VICE MANUAL CONTENTS 1. TECHNICAL CHANGES ···························[...]

  • Page 2

    2 1 TECHNICAL CHANGES MUZ-GA50V A - ➔ MUZ- GB50V A - E1 E1 1. Refrigerant filling capacity has bee[...]

  • Page 3

    3 P ART NAMES AND FUNCTIONS 2 3 SPECIFICA TION Air inlet Piping Air outlet (back and side) Drain hos[...]

  • Page 4

    4 Specifications and rating conditions of main electric parts Model Item Current transformer Current[...]

  • Page 5

    5 4 NOISE CRITERIA CUR VES OUTDOOR UNIT MICROPHONE 1m COOLING FUNCTION SPL(dB(A)) LINE High F AN SPE[...]

  • Page 6

    6 OUTLINES AND DIMENSIONS 5 Unit: mm OUTDOOR UNIT MUZ-GB50V A 30 - 35 - 155 90 198 40 515 299 66 34 [...]

  • Page 7

    7 WIRING DIAGRAM 6 MUZ-GB50V A R64B YLW 230V~ 12-24V CN912 CN663 WHT BLU NOISE FILTER P.C.BOARD BRN [...]

  • Page 8

    8 7 REFRIGERANT SYSTEM DIAGRAM MUZ-GB50V A OUTDOOR UNIT Unit:mm Outdoor heat exchanger Flared connec[...]

  • Page 9

    9 PERFORMANCE CUR VES 8 The standard data contained in these specifications apply only to the operat[...]

  • Page 10

    10 Indoor air Dry-bulb temperature difference ( : ) In d o o r in ta k e a ir D r y -b u lb te m p e[...]

  • Page 11

    11 COOL operation 1 Both indoor and outdoor unit are under the same temperature/humidity condition. [...]

  • Page 12

    12 MSZ-GB50V A : MUZ-GB50V A 21 18 5.88 3.00 0.51 1320 5.63 2.87 0.51 1386 5.40 2.75 0.51 1452 5.20 [...]

  • Page 13

    13 21 18 4.90 2.50 0.51 1617 4.50 2.30 0.51 1716 4.30 2.19 0.51 1749 21 20 5.15 2.01 0.39 1683 4.80 [...]

  • Page 14

    14 PERFORMANCE DA T A HEA T operation CAPACITY:5.8(kW) INPUT:1700(W) OUTDOOR WB( : ) INDOOR -10 -5 0[...]

  • Page 15

    15 10 TROUBLESHOOTING 3. T roubleshooting procedure 1) First, check if the OPERA TION INDICA TOR lam[...]

  • Page 16

    16 Outline of the function This air conditioner can memorize the abnormal condition which has occurr[...]

  • Page 17

    17 2. Flow chart of the detailed outdoor unit failure mode recall function Operational procedure Not[...]

  • Page 18

    18 OFF None (Normal) 2-time flash 3-time flash 4-time flash 5-time flash 6-time flash 7-time flash 8[...]

  • Page 19

    19 11-time flash • Check the connecting wire between outdoor electronic control P.C. board and pow[...]

  • Page 20

    20 Start Indoor unit operates. Outdoor unit doesn't operate. Indoor unit doesn't receive t[...]

  • Page 21

    21 LED1(Red) LED2(Yellow) Lightning Twice Outdoor power system • Check the connection of the compr[...]

  • Page 22

    22 Primary current protection Secondary current protection High-pressure protection Defrosting in co[...]

  • Page 23

    23 Part name Figure Check method and criterion Defrost thermistor (RT61) Ambient temperature thermis[...]

  • Page 24

    24 10-6. T roubleshooting flow MUZ-GB50V A A A How to check inverter/ compressor No No Ye s Ye s Ye [...]

  • Page 25

    25 B B Check of outdoor thermistors • When OPERA TION INDICA TOR lamp flashes 6-time. • When the[...]

  • Page 26

    26 C C Check of R.V . coil No Ye s No Ye s No Ye s No Ye s No Ye s 1. Disconnect the lead wire leadi[...]

  • Page 27

    27 D D Check of outdoor fan motor • Fan motor does not operate or stops operating shortly after st[...]

  • Page 28

    28 Outdoor unit does not operate at all, or stops immediately due to overcurrent. F F Check of curre[...]

  • Page 29

    29 H H How to check mis-wiring and serial signal error (when outdoor unit does not work) • When un[...]

  • Page 30

    30 I I Electromagnetic noise enters into TV sets or radios Replace or repair the antenna. Replace or[...]

  • Page 31

    31 1. Outdoor electronic control P .C. board MUZ-GB50V A LED 1 LED 2 CN801 325V DC ~ 370V DC Input ([...]

  • Page 32

    32 { CN912 R.V . coil 230V AC 230V AC Input 230V AC Output { { CN901 T o electronic control P .C. bo[...]

  • Page 33

    33 MUZ-GB50V A 3. Outdoor power board 325-370V DC Output (Red) (White) Connect to the compressor V o[...]

  • Page 34

    34 DISASSEMBL Y INSTRUCTIONS 11 (1) Slide the sleeve and check if there is a locking lever or not. ([...]

  • Page 35

    35 OPERA TING PROCEDURE PHOTOS 2. Removing the inverter assembly , inverter P .C. board and power bo[...]

  • Page 36

    36 5. Removing outdoor fan motor (1) Remove the top panel, cabinet and service panel. (Refer to 1.) [...]

  • Page 37

    37 OPERA TING PROCEDURE PHOTOS Photo 8 6. Removing the compressor and 4-way valve (1) Remove the top[...]

  • Page 38

    38 12 RoHS P ARTS LIST (RoHS compliant) 4 17 1 12 9 11 2 5 6 7 8 15 13 18 20 21 22 23 27 28 29 3 10 [...]

  • Page 39

    39 RoHS Symbol in Wiring Diagram Q'ty/unit Remarks Part No. No. Part Name MUZ-GB 50V A - E1 E12[...]

  • Page 40

    HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAP AN C C Copyright 2006 M[...]