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TECHNICAL CHANGES

2

1

PART NAMES AND FUNCTIONS

2

Front panel

(When the grille is opened)

Remote controller

Operation section

Display section

Emergency operation switch

Operation indicator lamp

Air inlet

To breaker

Power supply cord

Remote control

receiving section

Air cleaning filter (option)
(White bellows type)

Horizontal vane

Vertical vanes

Catechin air filter

Remote control

receiving section

Catechin air filter

Panel

MS-GD80VB

ACCESSORIES

Installation plate
Installation plate fixing screw 4 × 25 mm
Remote controller holder
Fixing screw for      × 3.5 × 1.6 mm (Black)
Battery (AAA) for remote controller
Wireless remote controller
Felt tape (Used for left or left-rear piping)

1
7
1
2
2
1
1

MS-GD80VB

MS-GD80VB  -

E1

1. New model

Use the speci

fi

 ed refrigerant only

Never use any refrigerant other than that specified.

Doing so may cause a burst, an explosion, or fire when the unit is being used, serviced, or disposed of.
Correct refrigerant is specified in the manuals and on the spec labels provided with our products.
We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by 
failure to follow the instructions.

Revision A:

• Another type of the electronic control P.C. board (TYPE 2) has been added to the original one (TYPE 1). They are both com-

patible with MS-GD80VB-

E1

.

OBH511A

Содержание MS-GD80VB-E1

Страница 1: ...11 DISASSEMBLY INSTRUCTIONS 23 SPLIT TYPE AIR CONDITIONERS MS GD80VB E1 SERVICE MANUAL Wireless type Model INDOOR UNIT NOTE RoHS compliant products have G mark on the spec name plate Outdoor unit service manual MU GD VB Series OBH512 No OBH511 REVISED EDITION A PARTS CATALOG OBB511 Revision A Another type of the electronic control P C board TYPE 2 has been added to the original one TYPE 1 They are...

Страница 2: ... Black Battery AAA for remote controller Wireless remote controller Felt tape Used for left or left rear piping 1 7 1 2 2 1 1 MS GD80VB MS GD80VB E1 1 New model Use the specified refrigerant only Never use any refrigerant other than that specified Doing so may cause a burst an explosion or fire when the unit is being used serviced or disposed of Correct refrigerant is specified in the manuals and ...

Страница 3: ... regulator Remote controller model Fan Electrical data motor Special remarks Cooling Single phase 230 V 50 Hz 954 822 684 0 34 10 69 88 0 34 RC4V40 AA 1 100 325 258 16 5 47 42 37 1 280 1 130 970 3 KM04B h A A W A mm kg dB rpm MS GD80VB NOISE CRITERIA CURVES 4 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 OCTAVE BAND SOUND PRESSURE LEVEL dB re 0 0002 MICRO BAR BAND CENTER FREQUENCIE...

Страница 4: ...ir in Insulation ø28 Drain hose ø16 Connected part O D Installation plate Wall hole ø75 Wireless remote controller Installation plate Indoor unit Liquid line ø 9 52 0 5 m Gas line ø 12 0 43 m Insulation ø ø 50 O D 32 I D Power supply cord Lead to right 2 0 m Lead to left 1 0 m MS GD80VB Unit mm WIRING DIAGRAM 6 MS GD80VB OBH511A ...

Страница 5: ... connection Room temperature thermistor RT11 Indoor coil thermistor RT13 sub Flared connection Refrigerant pipe ø15 88 with heat insulator Refrigerant pipe ø9 52 with heat insulator Indoor coil thermistor RT12 main Strainer 50 Refrigerant flow in cooling Unit mm OBH511A ...

Страница 6: ...er of indoor unit as shown in Table 1 After modification press the RESET button MS GD80VB J2 J1 Table 1 No 1 unit No 2 unit No 3 unit No 4 unit 1 unit operation No modification 2 units operation Same as at left Solder J1 3 units operation Same as at left Same as at left Solder J2 4 units operation Same as at left Same as at left Same as at left Solder both J1 and J2 How to set the remote controlle...

Страница 7: ...FF To prevent breaker OFF due to the rush of starting current systematize other home appliances not to turn ON at the same time When some air conditioners are connected to the same supply system if they are operated before power failure the starting current of all the compressors may flow simultaneously at restart Therefore the special counter measures are required to prevent the main voltage drop...

Страница 8: ...E CONTROLLER NOTE The last setting will be stored after the unit is turned OFF with the remote controller Indoor unit receives the signal of the remote controller with beeps Approximate 2 or more Difference between target temperature and room temperature This shows that the air conditioner is operating to reach the target temperature Please wait until the target temperature is obtained This shows ...

Страница 9: ...oom temperature control and time control Set temperature is controlled to fall 2 C from initial room temperature Indoor fan and outdoor fan operate in the same cycle as the compressor 3 Coil frost prevention The operation is as same as coil frost prevention during COOL mode Indoor fan operates at the set speed and the compressor stops for 5 minutes because protection Coil frost preven tion has the...

Страница 10: ...you feel too cool or too warm Each time the TOO WARM or TOO COOL button is pressed the indoor unit receives the signal and emits a beep tone Fuzzy control When the TOO COOL or TOO WARM button is pressed the microprocessor changes the set temperature consider ing the room temperature the frequency of pressing TOO COOL or TOO WARM button and the user s preference to heat or cool So this is called Fu...

Страница 11: ...operation time of compressor exceeds 1 hour the vane angle automatically changes to Angle 1 for dew prevention 7 SWING mode By selecting SWING mode with VANE button the horizontal vane swings vertically The remote controller displays SWING mode is cancelled when VANE button is pressed once again 8 ECONO COOL operation ECONOmical operation When ECONO COOL button is pressed in COOL mode set temperat...

Страница 12: ...ed 9 6 TIMER OPERATION 1 How to set the timer 1 Press OPERATE STOP ON OFF button to start the air conditioner 2 Check that the current time is set correctly NOTE Timer operation will not work without setting the current time Initially AM0 00 blinks at the current time display of TIME MONITOR so set the current time correctly with CLOCK SET button 3 Press ON OFF TIMER buttons to select the operatio...

Страница 13: ...t run operation This operation is for servicing The indoor fan speed runs at High speed and the temperature control does not work After 30 minutes of test run operation the system shifts to EMERGENCY COOL MODE with a set temperature of 24 C The fan speed shifts to Med speed The coil frost prevention works even in the test run or the emergency operation In the test run or emergency operation the ho...

Страница 14: ...he indoor unit is flashing ON and OFF to indicate an abnormality To make sure check how many times the OPERATION INDICATOR lamp is flashing ON and OFF before starting serv ice work 2 Before servicing check that the connector and terminal are connected properly 3 When the electronic control P C board seems to be defective check the copper foil pattern for disconnection and the components for bursti...

Страница 15: ...door unit 7 time flash Cause Outdoor unit Trouble of outdoor control system Refer to 10 5 How to check mis wiring When outdoor unit does not work Check room temperature thermistor and indoor coil thermis tor Refer to 10 6 Test point diagram and voltage Refer to 10 5 Check of indoor fan motor Refer to Check of outdoor thermistor Replace the deicer P C board 10 time flash Cause Outdoor unit Trouble ...

Страница 16: ...cs of indoor coil thermistor and room temperature thermistor on 10 6 3 time flash 2 5 second OFF Indoor fan repeats 12 seconds ON and 3 minutes OFF When the indoor fan breaks the fan keeps stopping The rotational frequency feedback signal is not emitted for 12 seconds after indoor fan motor is operated Refer to 10 5 Check of indoor fan motor 4 time flash 2 5 second OFF Indoor control system It can...

Страница 17: ...ormal 132 Ω 144 Ω 152 Ω 166 Ω YLW GRN ORN BRN RED ROTOR MAIN AUX P INNER PROTECTOR P 10 4 TROUBLE CRITERION OF MAIN PARTS Check of indoor fan motor A When OPERATION INDICATOR lamp flashes 3 time Indoor fan motor does not operate Disconnect lead wires from connector CN211 on the indoor electronic control P C board Measure resistance between lead wires No 1 and No 4 and then No 3 and No 4 Are lead w...

Страница 18: ...voltage approximately 4 V DC Is LCD display on the remote con troller visible Remove the batteries then set them back and press the RESET button Check if the unit operates with the remote controller Yes Does the unit operate with the remote controller Yes OK Yes No No No 5 V or 0 V DC No Replace the remote controller Reinstall the unit away from lights Attach a filter on receiving part Replace the...

Страница 19: ...stor Yes 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 No No Does the unit operate with the remote controller Does the OPERATION INDICATOR lamp light up by pressing the EMERGENCY OPERATION switch Yes No Yes Turn OFF the power supply Turn OFF the power supply Varistor NR11 In...

Страница 20: ...ion Correct them Replace the indoor electronic control P C board Is there 230 V AC between L N on the outdoor terminal block No Check the outdoor power supply and connection of wiring Yes No Replace the deicer P C board Yes No Make the wiring between CN730 on the deicer P C board and outdoor terminal block correct Replace the deicer P C board Yes Is there 5 V DC between J101 J401 on the deicer P C...

Страница 21: ...DC Indoor coil thermistor RT12 main RT13 sub Room temperature thermistor RT11 Resistance kΩ Room temperature thermistor RT11 To disable Auto restart function solder jumper wire to JR07 Refer to 8 3 Indoor coil thermistor RT13 sub R132 Receiver P C board Fan motor power supply CN211 Vane moter power supply CN151 CN121 CN301 TYPE 1 NOTE There are two types of electronic control P C boards TYPE 1 TYP...

Страница 22: ...PG Refer to 8 1 Emergency operation switch CN121 Room temperature thermistor RT11 R132 To disable Auto restart function solder jumper wire to JR07 Refer to 8 3 Vane motor power supply CN151 12 VDC Indoor coil thermistor RT12 main RT13 sub Room temperature thermistor RT11 Power supply input CN301 MS GD80VB Indoor electronic control P C board TYPE 2 Receiver P C board OBH511A ...

Страница 23: ...e catches at the top 3 Remove the screw of the corner box Remove the corner box Photo 1 Photo 2 Screw of the corner box Screw of the V A clamp Indoor electronic control P C board Vane motor connector Fan motor connectors Screws of the earth wire Screws of the panel Screw of the electrical cover R L holder Screw of the terminal block Receiver P C board 2 Removing the electronic control P C board th...

Страница 24: ...l out the drain hose from the nozzle assembly and remove the nozzle assembly 6 Remove the screws of the vane motor and disconnect the connector 7 Remove the vane motor 5 Removing the line flow fan and the indoor fan motor 1 Remove the panel and the corner box Refer to 1 2 Remove the electrical box Refer to 3 3 Pull out the drain hose from the nozzle assembly and remove the nozzle assembly 4 Remove...

Страница 25: ...25 OBH511A ...

Страница 26: ...ect to change without notice Copyright 2008 MITSUBISHI ELECTRIC ENGINEERING CO LTD Distributed in Aug 2011 No OBH511 REVISED EDITION A Distributed in Apr 2008 No OBH511 6 Made in Japan HEAD OFFICE TOKYO BLDG 2 7 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN ...

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