Mitsubishi Electric MS-GD08ND Service Manual
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Mitsubishi Electric MS-GD08ND Service Manual

Split-type, air conditioners
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SPLIT-TYPE, AIR CONDITIONERS
INDOOR UNIT
SERVICE MANUAL
Wireless type
Models
MS-GD08ND-
MS-GD10ND-
MS-GD12ND-
NOTE:
• RoHS compliant products have <G> mark on the spec name plate.
C1
C1
C1
C1
C1
C1
Outdoor unit service manual
MU-GD•ND Series (TBH016)
CONTENTS
1. TECHNICAL CHANGES ................................... 2
2. PART NAMES AND FUNCTIONS ..................... 3
3. SPECIFICATION ................................................ 4
4. OUTLINES AND DIMENSIONS ........................ 5
5. WIRING DIAGRAM ............................................ 6
7. SERVICE FUNCTIONS ..................................... 8
8. TROUBLESHOOTING ..................................... 10
9. DISASSEMBLY INSTRUCTIONS ................... 19
PARTS CATALOG (TBB014)
1
No. TBH014
TM

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Summary of Contents for Mitsubishi Electric MS-GD08ND

  • Page 1: Table Of Contents

    SPLIT-TYPE, AIR CONDITIONERS INDOOR UNIT No. TBH014 SERVICE MANUAL Wireless type Models MS-GD08ND- MS-GD10ND- MS-GD12ND- Outdoor unit service manual MU-GD•ND Series (TBH016) CONTENTS 1. TECHNICAL CHANGES ........2 2. PART NAMES AND FUNCTIONS ..... 3 3. SPECIFICATION ..........4 4. OUTLINES AND DIMENSIONS ......5 5.

  • Page 2: Technical Changes

    TECHNICAL CHANGES MS-A08ND- ➔ MS-GD08ND- MS-A12ND- ➔ MS-GD12ND- 1. Indoor unit has been changed. • Front panel has been changed. (Flat Flat Shining) 2. Terminal block has been changed. 3P (L~, N~, 2~) 4P (L~, N~, 2~, Earth) MS-A10ND- ➔ MS-GD10ND- 1.

  • Page 3: Ms-Gd08Nd- Ms-Gd10Nd- Ms-Gd12Nd

    PART NAMES AND FUNCTIONS INDOOR UNIT MS-GD08ND- MS-GD10ND- MS-GD12ND- Air cleaning filter (white bellows type) Front panel Air inlet Panel Catechin air filter (with deodorizing) Remote control receiving section Air outlet Vertical vanes Remote controller Horizontal vane Display section Operation section...

  • Page 4: Specification

    REMOTE CONTROLLER MS-GD08ND- MS-GD10ND- MS-GD12ND- Signal transmitting section Operation display section These buttons are able to store the light from nature, fluorescent lamp, etc and ON/OFF shine in the dark. OPERATE/STOP (ON/OFF) button WARM COOL TEMPERATURE buttons ECONO COOL ECONO COOL button...

  • Page 5: Outlines And Dimensions

    OUTLINES AND DIMENSIONS MS-GD08ND- Unit : mm INDOOR UNIT 81.5 133.5 Installation plate Indoor unit 81.5 81.5 Wall hole Air in Installation plate Liquid line 6.35-0.5m Gas line 9.52-0.43m Insulation 37 O.D 21 I.D Drain hose (Connected part O.D) Insulation Air out 17.5...

  • Page 6: Wiring Diagram

    WIRING DIAGRAM MS-GD08ND- MS-GD12ND- INDOOR UNIT MS-GD10ND-...

  • Page 7: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM MS-GD08ND- MS-GD12ND- MS-GD10ND- INDOOR UNIT INDOOR UNIT Refrigerant pipe Refrigerant pipe (Option){12.7 (Option){9.52 (with heat insulator) (with heat insulator) Indoor Indoor heat Indoor coil heat exchanger exchanger thermistor Indoor coil Flared Flared RT12 thermistor connection connection RT12...

  • Page 8: Service Functions

    SERVICE FUNCTIONS MS-GD08ND- MS-GD10ND- MS-GD12ND- 7-1. TIMER SHORT MODE For service, set time can be shortened by short circuit of JPG and JPS the electronic control P.C. board. The time will be shortened as follows. (Refer to 8-6.) Set time : 1-minute...
  • Page 9 7-3. 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 control P.C.board. The “AUTO RESTART FUNCTION” sets to work the moment power has restored after power failure.

  • Page 10: Troubleshooting

    TROUBLESHOOTING MS-GD08ND- MS-GD10ND- MS-GD12ND- 8-1. 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. Take care the following during servicing. 1) Before servicing the air conditioner, be sure to turn off the main unit first with the remote controller, and then after confirming the horizontal vane is closed, turn off the breaker and / or disconnect the power plug.
  • Page 11 5. How to install the horizontal vanes 5. How to install the horizontal vanes If horizontal vanes are not installed correctly, both of the operation indicator lamps will flash. If horizontal vanes are not installed correctly, both of the operation indicator lamps will flash. In this case, install the horizontal vanes correctly by following the procedures 1 to 6.
  • Page 12 8-2. Instruction of troubleshooting Start Indoor unit Indoor unit OPERATION INDICATOR operates. doesn't receive lamp on the indoor unit is Outdoor unit the signal from flashing on and off. doesn't remote controller. operate. Outdoor unit Indoor unit Indoor unit doesn't Outdoor unit doesn't operate, operates, when...

  • Page 13: Troubleshooting Check Table

    8-3. Troubleshooting check table • The following indication applies regardless of shape of the indicator. flashing · Flashing of the OPERATION INDICATOR lamp (on the left) Operation Indicator indicates possible abnormalities. · The OPERATION INDICATOR lamp (on the left) is lighting during normal operation.
  • Page 14 8-4. Trouble criterion of main parts MS-GD08ND- MS-GD10ND- MS-GD12ND- Part name Check method and criterion Figure Room Measure the resistance with a tester. temperature (Part temperature 10°C ~ 30°C) thermistor (RT11) Normal Abnormal Indoor coil thermistor Open or short-circuit 8k" ~ 20k"...

  • Page 15: Troubleshooting Flow

    8-5. Troubleshooting flow When left OPERATION INDICATOR lamp flashes 3-time. Indoor fan motor doesn’t operate. Turn OFF the power supply. A Check of indoor fan motor Check connector CN211 visually. Is soldering point of the connector Are lead wires connected? correctly soldered? Reconnect the lead wires.
  • Page 16 The unit doesn’t operate with the remote controller. Also, the OPERATION INDICATOR lamp doesn’t light up by pressing the EMERGENCY OPERATION switch. C Check of indoor electronic control P.C. board MS-GD10ND MS-GD08/GD12ND Check both “parts side” and “pattern side” of the indoor electronic control P.C. board visually.
  • Page 17 When both OPERATION INDICATOR lamps flash ON and OFF every 0.5-second. Indoor unit and outdoor unit don’t operate. D Check of installation of the horizontal vane Start Turn OFF the power supply. Relock the stopper of the Is the stopper of the horizontal vane horizontal vane to the indoor unit.
  • Page 18 8-6. Test point diagram and voltage MS-GD08ND- MS-GD10ND- MS-GD12ND- Power supply input Indoor electronic control P.C. board 220 - 230V AC Fuse 250V AC 3.15A Indoor fan motor 220 - 230V AC Varistor (NR12) Safety device of fan by horizontal...

  • Page 19: Disassembly Instructions

    9.1 MS-GD08ND- MS-GD10ND- MS-GD12ND- OPERATING PROCEDURE PHOTOS Photo 1 Screws of the panel...
  • Page 20 OPERATING PROCEDURE PHOTOS Screw of the electrical box Photo 4...
  • Page 21 HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN MITSUBISHI ELECTRIC CONSUMER PRODUCTS (THAILAND) CO., LTD. New publication, effective Feb. 2008 AMATA NAKORN INDUSTRIAL ESTATE Specifications subject to change without notice. 700/406 MOO 7, TAMBON DON HUA ROH, AMPHUR MUANG, CHONBURI 20000 THAILAND...

This manual is also suitable for:

Ms-gd12ndMs-gd10ndMr.slim ms-gd08nd-c1Mr.slim ms-gd12nd-c1Mr.slim ms-gd10nd-c1

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