Technical service manual
Contents
1. de RA e erui D A R m a RUE Electric control cabinet Electric control cabinet Outline Air outlet Air return Size of outline dimension Capacity KBtu opening size opening size mounted plug MTBI O7HWDN1 Q MTBI 09HWDN1 Q 700 210 635 570 65 493 35 119 595 200 740 350 MTBI 12HWDN1 Q 39 _ 3 5 Console 700mm EE SS Ss J m m lossi e e 4 gt _ bci 4 Service Space unit mm 4 1 Four way cassette compact Outlet Ground Yj Body 55 8 Ceiling 4 2 Ceiling amp Floor gt 35mm gt 35mm 4 3 A5 Duct Ensure enough space required for installation and maintenance 200mm or more 300mm or more V KC 72 ASN 600mm45600mm checking orifice JP All the indoor units reserve the hole to joint the fresh air pipe The hole size as following Duct joint for new air duct 10 4 4 Console 5 Wiring Diagram 5 1 MSO4I 07HRDN1 5041 09 1 5041 12 1 MSO41 18HRIN1 WIRING DIAGRAMING 202052390040 FUNCTION OF SWITCH TEMP SELECT TYPE SELECT SWITCH TYPE2. SWITCH TEMP ON m WHITE Y G nd FM WHITE MAIN CONTROL BOARD YELLOW BLACK WHITE TITLE ii INDOOR FAN m ROOM TEMP SWING MOTOR DISPLAY BOARD MIDDLE PIPE TEMP CONNECTORS 5 WAY CONNECTOR TRANSFORMER Y WATER PUMP iA 5 2 MCA21 07HRDN1 MCA2I 09HRDN1 MCA2I 12HRDN1 MCA2I 18HRDN1 202052390049 WIRING DIAGRAM INDOOR UNIT MAIN CONTROL BOARD FAN S pm M 12 TO OUTDOOR UNIT OF SWITCH SUPPLY TEMP COMPENSAT I ON COMPENSATION TO WIRE CONTROLLER BLACK WHITE XS1 XS2 XP1 XP2 DISPLAY RT2 RT1 PIPE ROOM TYPE SELECTION 1 6 5 RT2 PIPE TEMPERATURE SENSOR XS1 XS6 CONNECTORS WATER PUMP TRANSFORMER FAN M
3. Infrared signal receiver 7 2 3 Console Infrared signal receiver Operation lamp Timer indicator PRE DEF indicator cooling and heating type or fan only indicator cooling only type Temporary button Display panel 16 7 2 4 5 PRE DEF indicator cooling and heating type Temporary button or fan only indicator cooling only type Infrared sianal receiver Operation lamp Timer indicator Alarm indicator Display panel 7 3 Main Protection 7 3 1 Sensor protection at open circuit and breaking disconnection 7 3 2 The malfunction of correspondence in CMOS chip with EEPROM indication When the CMOS chip and EEPROM can t communicate during the time of using EEPROM to select parameter the LED shows information of the malfunction when use jump to select parameter it doesn t have this function After the showing the unit can t go right to work except turning off 7 3 3 Inverter module Protection Only for Console inverter module protection happened indoor unit gives an alarm Voltage protection function doesn t action 7 3 4 Indoor fan delayed open function Only for Console When system starts up the louver will be active immediately and the indoor fan will open when the top louver opens 15 the system runs in heating mode the anti cold wind function has priority 7 4 Operation Modes and Functions 7 4 1 Fan only mode 1 Outdoor fan and compressor stop 2 Indoor fa
4. 4 Three level fan speed more humanism design meets different air supply requirement 5 Water proof by utilizing the absorbing plastic film on water collector 6 Easy operation Auto restart function remote control and optional wire control method 7 Low noise level plus compact size Shape of the blades has been improved to prevent noise caused by turbulence 2 3 A5 Duct 1 New structure design 2 Built in drainage pump Optical 3 Two air intake ways from below or back standard Air intake from below Air intake from back 4 Wire controller is standard 5 Three speeds indoor unit 6 Fresh air inlet hole is reserved 7 Optional Accessories Canvas air passage Filter Front boar 2 4 Console 1 Consumes up to 30 less energy than non inverter units DC inverter compressor indoor fan motor adopts DC motor 2 Achieves set temperature more quickly air supplying from top and bottom or from top only air inlet from four directions 3 Compact unit body space saving this unit body is very thin and harmonious with room It is beautiful elegant and space saving lightweight and compact 4 Flexible installation can be used for floor standing or lower wall applications as a floor standing floor model it can be semi or fully recessed without loss of capacity 5 High efficiency filter built in Formaldehyde nemesis filter active carbon and biologica
5. low speed Anti cold wind function has the priority When Auto the sleep mode running function operates in accordance with selected running mode by auto mode 4 When user uses timer off function in sleep mode or sleep function in timer off mode if the timing is less than 7 hours sleep function will be cancelled when reaching the setting time If the timing is more than 7 hours the machine will not stop until reaches the setting time in sleep mode Only for Console 5 When sleep function is cancelled the indoor unit will not stop for new four way cassette compact and 5 duct for the other types the indoor unit will stop 7 4 11 Auto Restart function The indoor unit is equipped with auto restart function which is carried out through an auto restart module In case of a sudden power failure the module memorizes the setting conditions before the power failure The unit will resume the previous operation setting not including Swing function automatically after 3 minutes when power returns 7 4 12 PTC function except Console 1 From stop or not heating mode turn to the heating mode PTC function opens as default This function can be closed by remote controller 2 If both of the following items are satisfied the PTC function will be valid In heating mode or auto heating mode Economic operation closed If the economic operation is turned on the PTC function can not be turned on 3 If the PTC function is activ
6. speed is fixed in low speed and can t be changed 2 In dehumidifying mode the anti freezing function of the indoor heat exchanger is the same as that of cooling mode 3 PTC function and sleep mode are invalid 7 4 4 Heating mode 1 Indoor Fan actions in heating mode Indoor Fan can be set at HIGH MID LOW AUTO by using a remote controller but Anti cold wind function prevails Anti cold wind control function in heating mode For console 12 2 selling fan speed TEI TES 4 Breeze Fan off TE1 28 TE2 32 TE3 30 TE4 15 5 20 19 For the other types 12 2 TEI TE4 1 28 TE2 32 TE3 30 4 15 2 Auto wind heating mode For Console 12 5 2 0 Med fan 1 0 High fan For the other types 3 C Med Low Hign fan 3 Indoor evaporator high temperature protection in heating mode 9 lt 2 lt Decrease frequency of compressor For Console amp A5 Duct TE7 63 TE9 54 For the other types 60 TE9 48 7 4 5 Prevent Over Heating only for console new four way cassette compact 5 Duct For console In heating mode when the indoor unit has no capacity requirement due to indoor room temperature increased the Indoor fan will run in low 20 For new four way cassette compact amp A5 Duct In heating mode when the indoor unit has no capacity requirement due to indoo
7. F THE JUMPER IF YOU TO OUTDOOR UNIT PONNEGT JHE MEL 5 5 MTBI O7HWDN1 Q MTBI O9HWDN1 Q MTBI 12HWDN1 Q MTBI 18HWDN1 Q 202052290056 DISPLAY BOARD LL Ae 51 52 SWITCH FOR UNIT ADDRESS E 0 of the S2 and ON OFF of the 51 D DEDE mean the Addresses of the different units Respectively BLACK 5 CONNECT ON Pn FOR TYPE COMPENSATION CNA CN2 ON se DM PUMP OFF P E NOTE PLEASE USE SHIELDER WIRE FOR BUS WIRE AND THE SHIELD LAYER CONNECTS E TRANSFORMER 14 6 Operation temperature range Cooling mode Outdoor temperature 0 50 Heating mode Outdoor temperature 15C 24 C Dry mode 15 7 Electronic function 7 1 Abbreviation T1 Indoor room temperature 2 Indoor evaporator temperature TS Setting temperature through the remote controller 7 2 Icon explanation on indoor display board 7 2 1 Four way cassette compact Infrared signal receiver Temporary button Operation lamp Timer indicator Alarm indicator PRE DEF indicator cooling and heating type or fan only indicator cooling only type 7 2 2 Ceiling amp floor Operation lamp OPERATION CD O TIMER CD O i Timer indicator DEF FAN indicator cooling and heating or fan only indicator cooling only type Alarm indicator Temporary button
8. LI 1103 A GD Midea Refrigeration Equipment Co Ltd MULTI SPLIT TYPE HEAT PUMP AIR CONDITIONERS Technical service manual R410A Multi DC inverter Indoor Unit 220 240V 1Ph 50Hz Indoor Models Cassette MSQ4I 07 09 12HRDN1 MSQ4I 18HRIN1 MCA21 07 09 12 1 SHRDN1 Ceiling amp Floor MUBI 12 18HRDN1 Console MFF 07 09 12 18HRDN1 A5 Duct MTBI 07 09 12 18HWDN1 Q idea S SKLIMA Strategic Products and Services LI 1103 A CONTENTS 1 General information of Indoor Units 1 lp 2 3 DIMENSIONS iscan e 4 4 Service Space Unit MM 9 5 Dlagral EEA 12 6 Operation temperature range 15 Te rae taara il aasia 16 XThe specifications designs and information in this book are subject to change without notice for product improvement 1 General information of Indoor Units Four way cassette compact 5 Duct Console Ceiling amp Floor 1 2 Features 2 1 New Four way cassette type compact 1 Low operation noise Streamline plate ensures quietness Creates natural and comfortable environment 2 Efficient cooling Equal fast and wide range cooling 3 The adoption of the most advanced 3 Dimensional Screw fan Reduces the air resistance passing through Smoothes the air flow Mak
9. OTER CAPACITOR WATER LEVEL SWITCH 5 WAY TERMINAL 5 XS5 XP5 W SW 5 5 3 MUBI 12HRDN1 MUBI 18HRDN1 WIRING DIAGRAMING 2205249000 WHITE C Y G p WHITE CODE INDOOR FAN ROOM ROOM TEMP 55 8 TO OUTDOOR POWER FUNCTION OF SWITCHES COMPENSATION sce mw WHITE DISPLAY BOARD SWITCH BOARD 5 110 MAIN CONTROL BOARD 2012 LEVEL CNG CN3 CN7 PLUMB AA My 12 5 BLACK WHITE AN N N MA BL 5 cone Wi uen OUTLET 2 LONER OUTLET SWING WOTOR Rri Roow venperarure 08202 TO WIRE CONTROLLER a a peras ______ TYPE SELECTION 581 ON THE MAIN CONTROL BOARD 20 26 32 BLACK sa 7 nm FACTORY SETTING e Nase i The TYPE SELECTION and has be RT2 4 before leaving the E i MO MU FANIEFFEGTIWE IN POWERFUL WOE ME e podify it except the maintenance person aridus AIR FLOW RATE PIPE 3 TO 020 HE OF AR aor 202052290009 E ae 0000 SETT PLEASE CUT OF
10. an mode the indoor unit setting to cooling mode or fan mode will change to stand by The outdoor unit will continue working in heating mode If heating mode stops not including the indoor unit in heating mode reaching the set temperature 3 minutes after the outdoor unit restarts and works in cooling mode or fan only mode 24
11. e the PTC will automatically open or close as following rules a Open conditions If meet the following conditions the PTC will open Running in heating mode Compressor is on Indoor fan is on Indoor evaporator temperature T2 lt 12 11 15 lt 6 3 minutes later the PTC the last closed for New Four way cassette compact and A5 Duct b Close conditions If meet one of the following conditions the PTC will close Indoor room temperature T1 TS No capacity requirement compressor is off Indoor fan is off Indoor evaporator temperature T2 gt TE13 4 the PTC opens the indoor fan will be closed 15sec delay for A5 Duct it is 10sec For Duct Four way cassette compact Ceiling amp floor 12 49 13 51 For New Four way cassette compact A5 Duct TE12 40 C 13 52 23 7 4 13 Mode conflict The indoor units can not work cooling mode and heating at same time Heating mode has a priority 1 Definition mode S Mode No No mode conflict Yes Mode conflict 2 Unit action e n case of one Indoor unit working in cooling mode or fan mode and another indoor unit is set to heating mode the indoor unit working in cooling mode or fan mode will change to stand by The outdoor unit will change to heating mode after compressor stop 3 minutes e n case of one Indoor unit working in heating mode and another indoor unit is set to cooling mode or f
12. es air speed distribution to the heat exchange uniform 4 Improvement for easy installation and maintenance Little space is required for installation into a shallow ceiling Because of the compactness and weight reduction of the main unit and panel all models can be installed without a hoist 5 360 Air Flow Panel 360 air outlet makes equal fast ad wide range cooling ES SS A Me TU E 6 Inside E box design The E box is simply and safely build inside tge indoor unit of witch ceiling side is 600mm 600mm It is convenient to install and maintain Checking the control part is easy you only need to open the air return grille 2 2 Ceiling amp Floor type 1 New design more modern and elegant appearance 2 Convenient installation The ceiling type can be easily installed into a corner of the ceiling even if the ceiling is very narrow t is especially useful when installation of an air conditioner in the center of the ceiling is impossible due to a structure such as one lighting 3 Two direction auto swing vertical amp horizontal and wide angle air flow Air flow directional control minimizes the air resistance and produces wilder air flow to vertical direction The range of horizontal air discharge is widened which secures wider air flow distribution to provide more comfortable air circulation no matter where the unit is set up
13. l anti virus filter is optional 6 Comfort flexible air blow vertical auto swing and wide angle louvers ensure that warm air reaches the furthest corners of the room and increase the air flow coverage Low noise operation lowest to 23Db Low starting power and precise room temperature adjustment 7 Powerful mode can be selected for rapid cooling or heating 8 Easy cleaning grille and maintenance 9 Indoor unit adopts DC motor it has five level fan speed meet different requirements 3 Dimensions 3 1 Four way cassette type compact 7000Btu h 9000Btu h 12000Btu h 18000Btu h Drain side and LL9 ejou 2 009 Chart 4 401 location 600 Ceiling hole 650 Panel 570 Body 647 Panel Unit mm tu t LL 2222 lt lt 3 nme eos 54 Ceiling 50 m Panel 3 3 Ceiling amp Floor 12000Btu h 18000Btu h a Wall mounting installation b Ceiling installation D Connecting point of refrigerant pipe E Connecting point of refrigerant pipe E Liquid side D Connecting point of MN 221 2 2 refrigerant pipe D cas side E Connecting point of refrigerant pipe E Liquid side 3 4 A5 Duct Outline dimension and air outlet opening size Unit mm ata 0
14. me 4 Timer on off After turning off the machine will turn on automatically when reaching the setting on time and then turn off automatically when reaching the setting off time 5 Timer off on After turning on the machine will turn off automatically when reaching the setting off time and then turn on automatically when reaching the setting time 6 The setting time is relative time 7 The tolerance of timer is 1 minute per hour 8 For New Four way cassette compact and 5 duct the timer function will not change the AC current operation mode Suppose AC is off now it will not start up firstly after setting the timer off function And when reaching the setting time the timer LED will be off and the AC running mode has not been changed 7 4 10 Sleep mode 1 Operation time in sleep mode is 7 hours After 7 hours the AC quits this mode and turns off 2 It is available at cooling heating or auto mode 3 Operation process in sleep mode is as follow After pressing ECONOMIC or SLEEP button on controller the machine will turn into sleep mode 22 When cooling the setting temperature rises 1 lower than 30 every one hour 2 hours later the setting temperature stops rising and indoor fan is fixed as low speed When heating the setting temperature decreases 1 C be higher than 17 every one hour 2 hours later the setting temperature stops decreasing and indoor fan is fixed as
15. n can be set to high med low auto 3 The louver operates same as in cooling mode 4 Auto fan in fan only mode acts as follow For Console 1 35 e High Fan 41 5 Mid Fan 1 0 17 When T1 TA lt 3 transfer high to medium speed When 1 lt 1 transfer medium speed to low When 1 gt 1 5 transfer low to medium speed When T1 TA gt 3 5 transfer medium speed to high 24 For the other types T1 TA 40 ue High Fan 7 Mid Fan d 1 0 Low Fan When 1 lt 3 transfer high to medium speed When T1 TAs1 transfer medium speed to low When 1 gt 1 transfer low to medium speed When 1 gt 4 transfer medium speed to high For Four way cassette compact Ceiling amp floor 23 For New four way cassette compact amp A5 Duct TA 24 5 PTC function and sleep mode are invalid 7 4 2 Cooling mode 1 Indoor fan keeps running fan speed can be set in high mid low Auto by using a remote controller 2 Auto fan in cooling mode acts as follow For Console 3 5 1176 39 1 5 1 0 High Medium Low 18 For the other types High A Medium T1 TS 3 1 Low 3 Anti freezing control to indoor evaporator in cooling mode Off After 3 minutes Console p Off After 3 minutes 4 PTC function is invalid and sleep mode be set by using a remote controller 7 4 3 Dehumidifying mode 1 Indoor fan
16. of forced auto mode forced cooling mode and stop Refer the following chart 21 First press Press once Press once Forced auto Forced cooling Press once 2 In forced operation mode all general protections and remote control are valid 3 Operation rules Forced cooling mode The indoor fan will work in low speed for Ceiling amp floor the indoor fan will work in high speed compressor and outdoor fan open unconditionally after 30mins the unit will transfer into forced auto mode All the protections are valid during forced cooling mode for A5 Duct all the protections are invalid When there s one indoor unit running in forced cooling it is the master forced cooling unit Other indoor units will run at forced cooling mode too and they will be the slave forced cooling units The slave forced cooling units can not quit forced cooling mode until the master forced cooling unit quit The slave forced cooling units will not be controlled by other signals Forced auto mode The action of forced auto mode is the same as normal auto mode with 24 setting temperature All the protections are valid during forced auto mode 7 4 9 Timer Function 1 Timing range is 24 hours and the minimum resolution is 30 minutes 2 Timer on After turning off the machine will turn on automatically when reaching the setting time 3 Timer off After turning on the machine will turn off automatically when reaching the setting ti
17. r room temperature increased if outdoor fan and compressor stop the Indoor fan will run in setting fan speed otherwise the Indoor fan will run in low Anti cold wind function has the priority 7 4 6 Defrosting Defrosting operation Available for heating only Defrosting Actions a Indoor fan switches off anti cold wind function is valid b After defrosting ends indoor fan runs according to anti cold wind function in heating mode 7 4 7 Auto mode This mode can be chosen by remote controller and the setting temperature can be changed between 17 30 In auto mode the machine will choose cooling heating or fan only mode according to the difference between T1 and TS For Console New four way cassette compact A5 Duct For the other types T1 TS gt 2 C Cooling Indoor fan will run in auto fan of the relevant mode The louver operates the same as in relevant mode If the machine switches mode between heating and cooling the compressor will keep stopping for 15 minutes and then rechoose mode according to T1 TS If the setting temperature is modified the machine will rechoose running function 7 4 8 Forced operation function 1 Enter forced operation function Pressing the touch button once the machine will transfer into forced auto mode if pressing the button once again the machine will turn into forced cooling mode the third pressing will stop the unit and the forth pressing is the start of the cycle
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