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38

Service Manual

2. Communication malfunction E6

Start

Cut off power supply. Check if
connection line of IDU and ODU 
and the wire inside electric box 
are correctly connected.

Correct connection?

Main board matches

with display board? Main board of 

IDU matches with that of ODU?

Communication cord is damaged?

Replace IDU's 

main board

Malfunction eliminated?

End

Connect the line 
according to 
wiring diagram.

Match correctly 
according to product 
specification

Replace
communication
cord

Replace ODU's 

main board.

Malfunction eliminated?

Malfunction eliminated?

Malfunction eliminated?

yes

yes

yes

yes

yes

yes

yes

no

no

no

no

no

no

no

Summary of Contents for MULTI VARIABLE SERIES

Page 1: ...MULTI VARIABLE SERIES DUCT MV DxxBI SERVICE MANUAL EN ...

Page 2: ... Original instructions IMPORTANT NOTE Read this manual carefully before installing or operating your new air conditioning unit Make sure to save this manual for future reference ...

Page 3: ...gram 8 5 2 PCB Printed Diagram 9 6 Function and Control 10 6 1 Remote Controller Introduction 10 6 2 Brief Description of Modes and Functions 14 6 3 Wired Remote Controller XK19 16 Part Ⅱ Installation and Maintenance 25 7 Indoor Unit Installation 25 8 Maintenance 36 8 1 Error Code List 36 8 2 Troubleshooting for Main Malfunction 37 9 Exploded View and Parts List 41 10 Removal Procedure 47 ...

Page 4: ...1 Service Manual 1 Summary Part Ⅰ Technical Information Indoor Unit MV D09BI MV D12BI MV D18BI MV D24BI Remote Controller YT1F MOTO ...

Page 5: ...Evaporator Material Inner Groove Copper Aluminum Inner Groove Copper Aluminum Evaporator Pipe Diameter mm Φ7 Φ7 Evaporator Number of Rows Fin Pitch mm 2 1 6 3 1 6 Evaporator Length L XHeight H XWidth W mm 527X209 55X25 4 527X209 55X25 4 Fuse Current A 3 15 3 15 Sound Pressure Level SH H M L SL dB A 37 34 31 47 41 39 35 32 49 42 Sound Power Level SH H M L SL dB A 47 44 41 57 51 49 45 42 59 52 Dimen...

Page 6: ...of Rows Fin Pitch mm 3 1 6 Evaporator Length L XHeight H XWidth W mm 725X209 55X38 1 Fuse Current A 3 15 Sound Pressure Level SH H M L SL dB A 41 33 51 43 Sound Power Level SH H M L SL dB A 51 43 61 53 Dimension of Outline LXWXH mm 900X615X200 Dimension of Carton Box LXWXH mm 1120X740X290 Dimension of Package LXWXH mm 1123X743X305 Net Weight kg 26 Gross Weight kg 32 Liquid pipe mm Φ6 Gas Pipe to i...

Page 7: ...rature is 20ćDB Outdoor Temperature is 7ćDB 6ćWB b The data will change with the change of products Refer to those parameters listed on nameplate c Noise was tested in semi silenced room so the actual noise value will be a little higher for change of ambient Working Temperature Range Sorts e t a t s e d i s r o o d n I Dry bulb temp ć Wet bulb temp ć Rated Cooling 27 19 Max cooling 32 23 Min cooli...

Page 8: ...tline Dimension Diagram Unit mm Item Model A B C D E F G H I J MV D09BI 742 491 662 620 700 615 782 156 200 635 MV D12BI MV D18BI 942 491 862 820 900 615 982 156 200 635 1142 491 1062 1020 1100 615 1182 156 200 635 MV D24BI ...

Page 9: ...module the temperature and pressure of the refrigerant liquid will further decrease and then go the main valve After that it will be divided and go to the heat exchanger of each indoor unit to exchange heat with the air which needs to be conditioned Consequently the refrigerant liquid become low temperature low pressure refrigerant gas again Such a refrigeration cycle goes round and round to achie...

Page 10: ...sed to determine fan speed and the swing angle of horizontal lover for this model 63625690 These circuit diagrams are subject to change without notice please refer to the one supplied with the unit 0 1 1 57 57 0 3 75 16 250 5 3 1 1 2 8 1 5 3 1 1 1 3 1 1 02725 48 3803 3 1 2 5 7 03 7 03 6 1625 6 1625 7 8QLW 2XWGRRU 1 8 3 3 6 7 5 9 1 0 18 19 250 17 3 3 Ė Ę ė 0 1 7 5 1 127 3 LV RSWLQDO DFFHVRUU ZKHQ 3...

Page 11: ...indoor unit and outdoor unit 2 Water pump terminal 8 Liquid level switch inspection 3 Live wire 9 Output terminal of transformer 4 Neutral wire 10 Ambient temperature sensor 5 Fuse 11 Tube temperature sensor 6 Transformer input 12 Wired controller Top view Bottom view 1 2 3 4 5 6 7 8 9 10 11 12 ...

Page 12: ...o mode set time TIMER ON TIMER OFF child lock light swing Temp display type set temp outdoor ambient temp indoor ambient temp health function I feel 2 3 6 8 11 13 14 1 7 4 5 9 10 12 15 This is a general use remote controller it could be used for the air conditioners with multifunction For some function which the model don t have if press the corresponding button on the remote controller that the u...

Page 13: ...11 Service Manual AUTO COOL DRY FAN HEAT ...

Page 14: ...12 Service Manual horizontal louvers stops at current position no display no display ...

Page 15: ...13 Service Manual Sketch map for replacing batteries ...

Page 16: ... Tamb Tcompensation for heat pump unit and Tamb for cooling only unit 4 If theres I feel function Tcompensation is 0 Others are same as above 5 Fan mode Under this mode indoor fan operates at set fan speed Compressor outdoor fan 4 way valve and electric heating tube stop operation Indoor fan can select to operate at high medium low or auto fan speed Temperature setting range is 16 30ºC 2 Other con...

Page 17: ...ess than 180 T s 0 T 15 T is the variable of controller Thats to say the minimum stop time of compressor is 180s 195s Read in T into memory chip when refurbish the memory chip each time After power recovery compressor can only be started up after 180 T s at least 8 X fan mode When X fan function is turned on after turn off the unit indoor fan will still operate at low speed for 2min and then the c...

Page 18: ...16 Service Manual 6 3 Wired Remote Controller XK19 ...

Page 19: ...17 Service Manual ...

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Page 23: ...21 Service Manual memmorizing memmorizing ...

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Page 26: ...24 Service Manual ...

Page 27: ...25 Service Manual Part Ⅱ Installation and Maintenance 7 Indoor Unit Installation 7 1 7 1 1 7 1 2 7 1 3 ...

Page 28: ...26 Service Manual 09 12K 18K 24K 7 1 4 7 1 5 ...

Page 29: ...27 Service Manual 7 1 6 ...

Page 30: ...28 Service Manual 7 1 7 7 1 8 ...

Page 31: ...29 Service Manual ...

Page 32: ...30 Service Manual 7 1 9 7 1 10 ...

Page 33: ...31 Service Manual 7 1 11 7 1 12 ...

Page 34: ...32 Service Manual 7 1 13 ...

Page 35: ...ose recommended by the manufacture Should repair be necessary contact your nearest authorized Service Centre The appliance shall be stored in a room without continuously operating ignition electric heater Do not pierce or burn than X m see table 1 only applies to appliances that are not fixed appliances Appliance shall be installed operated and stored in a room with a floor area larger 2 s instruc...

Page 36: ...ition Replace the vague or damaged warning mark If you should cut or weld the refrigerant system pipes in the process of maintaining please follow the steps as below It is not allowed to drill hole or burn the connection pipe The air conditioner must be installed in a room that is larger than the minimum room area The minimum room area is shown on the nameplate or following table a Leak test is a ...

Page 37: ...ces specialized for R32 Make sure that different kinds of refrigerant won t contaminate with each other After filling is finished please do the leakage detection before test running another time of leak detection should be done when it s removed Please use the flammable gas detector to check before unload and open the container No fire source and smoking According to the local rules and laws The r...

Page 38: ...igerant 2 Indoor evaporator temperature sensor works abnormally 3 The unit has been plugged up somewhere F0 5 E9 Water level switch If cut off of water level switch is detected for 8s successively once energized the system will enter full water protection In this case switch off the unit and then switch it on to eliminate this malfunction Full water protection ...

Page 39: ...n Malfunction diagnosis process Is the wiring terminal between the temperature sensor and the controller loosened or poorly contacted Start Insert the temperature sensor tightly Yes Yes Yes Yes Yes Yes No No No No No No Is malfunction eliminated Is malfunction eliminated Is malfunction eliminated Replace it with a temperature sensor with the same model Make the parts upright Is there short circuit...

Page 40: ...s with display board Main board of IDU matches with that of ODU Communication cord is damaged Replace IDU s main board Malfunction eliminated End Connect the line according to wiring diagram Match correctly according to product specification Replace communication cord Replace ODU s main board Malfunction eliminated Malfunction eliminated Malfunction eliminated yes yes yes yes yes yes yes no no no ...

Page 41: ... with water pump No Yes Replace the water pump Short circuit the full water protection interface on indoor mainboard according to the circuit diagram Check if the water pump works normally No Replace the full water switch or make sure the float of full water switch works normally Yes ...

Page 42: ...utlet is blocked End Remove blockage in the system System is blocked inside dirt block ice block oil block Y valve no fully open Compressor doesn t work normally Strange noise or leakage occurs Make compressor run normally Casing is too hot Replace a main board with the same model Malfunction is eliminated Malfunction is eliminated Malfunction is eliminated Malfunction is eliminated Troubleshootin...

Page 43: ... Remove the rear volute Undo the buckle of the rear and front volutes and then remove the rear volute away 4 Remove the front volute Unscrew the fixed screws of the front volute and then remove it away s n o i t c u r t s n I n o i t a r e p O s n o i t a r t s u l l I s p e t S 1 Pull out the electric wire of the motor Open the cover plate of the electric box and then pull out the electric wire i...

Page 44: ...ut from the return air frame Note the motor support shall be removed in advance and then changed to the unit 7 Replace with a new motor Assemble the fan as the reverse disassembly order and then take a power on test 5 Loosen the fan blade and fan motor Unscrew the fixed screws of the fan blades and then undo the buckle of the motor ...

Page 45: ...PARTS GUIDE MV D09BI MV D12BI MV D18BI MV D24BI DUCT MULTI VARIABLE SERIES 103 ...

Page 46: ...MV D09BI ...

Page 47: ...acitor CBB61S 3301074704 1 AH 16 Electric Box Sub Assy 01395100 1 AM 17 Electric Box Assy 01395983 1 BB 18 Electric Box Cover 01424253 1 AF 19 Cover board Fan motor 01265300 1 AM 20 Bottom Cover Plate 01265299 1 AP 21 Supporter 01895225 2 AH 22 Bar Clasp 012133000018 2 AB 23 Fan Motor 1570520103 1 BB 24 Motor Support 01804348 1 AK 25 Fan Motor Mounting Plate Sub Assy 01325200007 1 AP 26 Right Side...

Page 48: ...MV D12BI ...

Page 49: ...or CBB61S 3301074704 1 AH 16 Electric Box Sub Assy 01395100 1 AM 17 Electric Box Assy 01395983 1 BB 18 Electric Box Cover 01424253 1 AF 19 Cover board Fan motor 01265300 1 AM 20 Bottom Cover Plate 01265299 1 AP 21 Supporter 01895225 2 AH 22 Bar Clasp 012133000018 2 AB 23 Fan Motor 15010100007001 1 BA 24 Motor Support 01804348 1 AK 25 Fan Motor Mounting Plate Sub Assy 01325200007 1 AP 26 Right Side...

Page 50: ...MV D18BI ...

Page 51: ...lectric Box Sub Assy 01395100 1 AM 17 Electric Box Assy 01395984 1 BB 18 Electric Box Cover 01424253 1 AF 19 Temperature Sensor 390001982G 1 AD 20 Ambient Temperature Sensor 39000206 1 AD 21 Cover board Fan motor 01265333 1 AM 22 Fan Motor 15010100007401 1 BB 23 Bar Clasp 012133000018 2 AB 24 Motor Support 01804348 1 AK 25 Joint Slack 73018731 1 AK 26 Supporter 01895225 2 AH 27 Rotary Axis Sub Ass...

Page 52: ...MV D24BI ...

Page 53: ...lectric Box Sub Assy 01395100 1 AM 17 Electric Box Assy 100002003008 1 AZ 18 Electric Box Cover 01424253 1 AF 19 Cover board Fan motor 01265338 1 AM 20 Temperature Sensor 390001982G 1 AD 21 Ambient Temperature Sensor 39000206 1 AD 22 Fan Motor 150101000059 1 BB 23 Bar Clasp 012133000018 1 AB 24 Motor Support 01804348 1 AK 25 Joint Slack 73018731 1 AK 26 Supporter 01895225 2 AH 27 Rotary Axis Sub A...

Page 54: ......

Page 55: ...ANT MEDIUM This unit is containing fluorinated gases included in the Kyoto protocol The maintenance and the liquidation must be carried out by qualified personnel Type of refrigerant R32 The quantity of the refrigerant please see the unit label The value GWP 675 1 kg R32 0 675 t CO2 eq GWP Global Warming Potential Appliance filled with flammable gas R32 In case of quality problem or other please c...

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