SPLIT-TYPE, AIR CONDITIONERS INDOOR UNIT No. TBH014 SERVICE MANUAL Wireless type Models MS-GD08NDMS-GD10NDMS-GD12ND- C1 C1 C1 Outdoor unit service manual MU-GD•ND Series (TBH016) CONTENTS MS-GD08NDMS-GD10NDMS-GD12ND- C1 C1 C1 1. TECHNICAL CHANGES ................................... 2 2. PART NAMES AND FUNCTIONS ..................... 3 3. SPECIFICATION ................................................ 4 4. OUTLINES AND DIMENSIONS ........................ 5 5. WIRING DIAGRAM..........................
1 TECHNICAL CHANGES MS-A08NDMS-A12ND- C1 C1 ➔ MS-GD08ND➔ MS-GD12ND- C1 C1 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- C1 ➔ MS-GD10ND- 1. Indoor unit has been changed. • Front panel has been changed.
2 PART NAMES AND FUNCTIONS INDOOR UNIT MS-GD08NDMS-GD10NDMS-GD12ND- C1 C1 C1 Air cleaning filter (white bellows type) Front panel Air inlet Panel Catechin air filter (with deodorizing) Remote control receiving section Air outlet Vertical vanes Fan Horizontal vane Remote controller Display section Operation section (When the front panel is opened) Operation indicator lamp Emergency operation switch Remote control receiving section ACCESSORIES 1 2 3 4 5 6 7 8 Installation plate Installation pla
REMOTE CONTROLLER MS-GD08NDMS-GD10NDMS-GD12ND- C1 C1 C1 Signal transmitting section Operation display section h ON/OFF OPERATE/STOP (ON/OFF) button ECONO COOL button I FEEL COOL FAN DRY TOO WARM TOO COOL ECONO COOL FAN POWERFUL COOL VANE These buttons are able to store the light from nature, fluorescent lamp, etc and shine in the dark.
OUTLINES AND DIMENSIONS Unit : mm C1 INDOOR UNIT 81.5 133.5 4.5 MS-GD08ND- 231.5 Installation plate Indoor unit 271 4 326 81.5 42 41 2.5 783 81.5 326 Wall hole [65 242 Air in 5 Installation plate { 278 7 or more 815 90 149 606 30 60 Air out 17.5 244 Drain hose [16 (Connected part O.D) Insulation [28 140 57 110 Liquid line [6.35-0.5m Gas line [9.52-0.43m Insulation [37 O.D [21 I.D C1 161.5 Installation plate 218.5 INDOOR UNIT Indoor unit 2.5 41 783 81.
5 WIRING DIAGRAM MS-GD08NDMS-GD12ND- C1 C1 INDOOR UNIT MS-GD10ND- C1 6
6 REFRIGERANT SYSTEM DIAGRAM MS-GD08NDMS-GD10ND- MS-GD12ND- C1 INDOOR UNIT INDOOR UNIT Refrigerant pipe (Option){12.7 (with heat insulator) Refrigerant pipe (Option){9.52 (with heat insulator) Indoor heat exchanger RT11 Room temperature thermistor C1 C1 Indoor coil thermistor RT12 Indoor heat exchanger Flared connection RT11 Room temperature thermistor Flared connection Indoor coil thermistor RT12 Flared connection Flared connection Refrigerant pipe (Option){6.
7 SERVICE FUNCTIONS MS-GD08NDMS-GD10NDMS-GD12ND- C1 C1 C1 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 1-second Set time : 3-minute 3-second It takes 3 minutes for the compressor to start operation. However, the starting time is shortened by short circuit of JPG and JPS. 7-2. P.C.
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. Then, the unit will restart automatically. However if the unit is operated in “I FEEL CONTROL” mode before power failure, the operation is not memorized.
8 TROUBLESHOOTING MS-GD08NDMS-GD10NDMS-GD12ND- C1 C1 C1 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.
5.5.How Howto toinstall install the the horizontal horizontal vanes vanes If Ifhorizontal horizontalvanes vanesare arenot notinstalled installedcorrectly, correctly,both bothofofthe theoperation operationindicator indicatorlamps lampswill willflash. flash. InInthis thiscase, case,install installthe thehorizontal horizontalvanes vanescorrectly correctlyby byfollowing followingthe theprocedures procedures1 1to to6. 6.
8-2. Instruction of troubleshooting Start Indoor unit operates. Outdoor unit doesn't operate. Outdoor unit operates in only Test run operation. Check room temperature thermistor. Refer to 8-6. "Test point diagram and voltage". Indoor unit doesn't receive the signal from remote controller. OPERATION INDICATOR lamp on the indoor unit is flashing on and off. Outdoor unit doesn't operate even in Test run operation. Indoor unit operates, when the EMERGENCY OPERATION switch is pressed.
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) indicates possible abnormalities. · The OPERATION INDICATOR lamp (on the left) is lighting during normal operation. Operation Indicator Before taking measures, make sure that the symptom reappears for accurate troubleshooting. Self check table No. Abnormal point Indication Both lamps flash at the same time.
8-4. Trouble criterion of main parts MS-GD08NDMS-GD10NDMS-GD12ND- C1 C1 C1 Check method and criterion Part name Room temperature thermistor (RT11) Indoor coil thermistor (RT12) Figure Measure the resistance with a tester. (Part temperature 10°C ~ 30°C) Normal Abnormal 8k" ~ 20k" Open or short-circuit Indoor fan motor (MF) Motor part Measure the resistance between the terminals with a tester.
8-5. Troubleshooting flow When left OPERATION INDICATOR lamp flashes 3-time. Indoor fan motor doesn’t operate. Turn OFF the power supply. Check connector CN211 visually. A Check of indoor fan motor No Yes Are lead wires connected? Is soldering point of the connector correctly soldered? Yes Reconnect the lead wires. No Resolder it. Disconnect lead wires from connector CN211 on the indoor electronic control P.C. board. Measure resistance between lead wires: No.1 and No.5 and then No.3 and No.5.
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 Check both “parts side” and “pattern side” of the indoor electronic control P.C. board visually. 3 Turn OFF the power supply. Remove indoor fan motor connector CN211 and vane motor connector CN151 from the indoor electronic control P.C. board and turn ON the power supply.
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. Is the stopper of the horizontal vane locked to the indoor unit correctly? No Relock the stopper of the horizontal vane to the indoor unit. Refer to 8-1-5. Yes Turn ON the power supply.
8-6. Test point diagram and voltage C1 C1 C1 Indoor electronic control P.C. board Fuse 250V AC 3.15A Power supply input 220 - 230V AC } MS-GD08NDMS-GD10NDMS-GD12ND- } Varistor (NR12) Indoor fan motor 220 - 230V AC Safety device of fan by horizontal vane CN1R1 Room temperature thermistor (RT11) Varistor (NR11) Indoor coil thermistor (RT12) J12 12V DC } { –+ Timer short mode point JPG, JPS (Refer to 7-1.) Emergency operation switch } J33 Power monitor, receiver P.C.
9 DISASSEMBLY INSTRUCTIONS <”Terminal with locking mechanism” Detaching points> The terminal which has the locking mechanism can be detached as shown below. There are two types ( Refer to (1) and (2)) of the terminal with locking mechanism. The terminal without locking mechanism can be detached by pulling it out. Check the shape of the terminal before detaching. (1) Slide the sleeve and check if there is a locking lever or not. Sleeve Locking lever 9.
OPERATING PROCEDURE PHOTOS 3. Removing the electrical box Remove the panel. (Refer to 1.) Remove the electrical cover. (Refer to 2.) Remove the V.A. clamp. (Refer to 2.) Remove the cord clamp. (Refer to 2.) Remove the terminal block. (Refer to 2.) Remove the screw of ground wire. (Refer to 2.) Disconnect the connector of the indoor coil thermistor (CN112), the fan motor connector (CN211 and CN121) and the vane motor connector (CN151)on the electronic control P.C. board.
TM HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN MITSUBISHI ELECTRIC CONSUMER PRODUCTS (THAILAND) CO., LTD. AMATA NAKORN INDUSTRIAL ESTATE 700/406 MOO 7, TAMBON DON HUA ROH, AMPHUR MUANG, CHONBURI 20000 THAILAND Made in Thailand New publication, effective Feb. 2008 Specifications subject to change without notice.
