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Service Manual MUL serie CON

1. MULI8 CFTA NO Description Code Qty 1 Fixed Mount 26909426R 1 2 Louver Clamp 26112127 2 3 Guide Louver 10619403 1 4 Rotating Shaft 26909430 4 5 Front Connecting Plate 01349414P 1 6 Air Louver 10619404 16 7 Base Frame 26909448 1 8 Air Lead Plate sub assy 02229418 1 9 Supporter 01805288 1 10 Mid clapboard sub assy 01249416 1 11 Front volute casing 26905205 4 12 Rear side plate assy 01319430 1 13 Centrifugal fan 10425200 4 14 Support 1 01809417 1 15 Axile Bush 10542704 2 16 Right Side Plate Sub Assy 01319429 1 17 Right Cover Plate 26909444 1 18 Installation Supporting Frame 01809402 1 19 Connection Board 02229406 1 20 Joint Slack 73018731 2 21 Rear Connecting Plate 01349416 1 22 Fan Motor 1570940901 1 23 Bar Clasp 70818405 1 24 Bar Clasp Sub assy 70815201 1 25 Rear volute casing 26905206 4 26 Cable Cross Loop 76510021 1 27 Filter 2 07216221 1 28 Sensor 3900020723 1 29 Evaporator Assy 01029469 1 30 Press Plate of Water Lead flume 26909442 1 31 Connection Board 01344115 1 32 Water Tray Assy 01289404 1 33 Front Grill sub assy 01579403 1 34 Top Cover Board Sub assy 01269409 1 35 Support 2 01809418 1 36 Left Side Plate Sub Assy 0131942801 1 37 Rotating Shaft 26909412 1 38 Rotating Shaft 26909413 1 39 Step Motor 1521240206 1 40 Electric Box Assy 01399511 1 41 Left Cover Plate 26909443 1 42 Installation Supporting Frame 01809401 1 43 Display Board 30296317 1 44 Remot
2. TOYOTOMI b Service Manual MODEL MUL 09 CFTA MUL 12 CFTA MUL 18 CFTA MUL 24 CFTA CONTENTS EMODEES LISTO en AR ki su LR ARA BR ene vebdevanen BAR ESA Ka 1 2 NOMENCLATURE cine 2 1 Nomenclature OF Outdoor Unit sssrini eae pen serok Sk k S s a ir s vine eeu aene ere poena 2 2 micidEnIP dli 3 FUNCTION Ree C LODI DNA werende E E E E en E 4 1 Product data of outd0or D en 4 2 Product data OF Indoor D 4 3 Working Temperature Range eussessnsssnssnssnnsnnrsonsnnssnnsnnesnnsnnsnnnsnnsnnnsnnssnsnunsnnssnnsnnsnnssansnnssnnsnnssnnsnnsnnssnnsnnssannen 5 PIPING DIAGRAM rear 1 OPERATION FEOWCHAR Ti cid zel nl iel yalla zle 1 1 Cooling Dehumidfying Operation sc sciscccesccvsecsssecstnesossssoseansssossssessoueescssenuvencsvoeeseces sooper isei ssori soosoo 1 2 Heating Oper ti ss ss sas ha NES PERENNE a i re Biye calan BA BER EUREN ENS SEE US e UN a 2 MAIN A PR A A MR O e Ni ee e 2 1 Control Function of Outdoor Unit eret retten roro oro eara eo pene b er tha in oe el So EE r s ss siga hn run paure 2 3 Control Functi n of Indoor Unit ertet essen sossesocesctsvosessesscusescesvoctencsv eue 3 REMOTE CONT
3. swishes when in it is and o y It is the sound when the draining system is operating after the running The unit squeaks when it is in and It is the sound of frication generated by the skin plate after the running etc which swells due to the temperature change The unit blows When the unit restarts after it is not En M 5 The dust inside the unit is blown out again out dust used for a long time The unit emits odors When the unit is running The odors absorbed in are blown out again 55 MAINTENANCE 1 3 Error description If some error occurs when the unit is running the error code will be displayed on the wired controller and the main board of the outdoor unit See the table before for more details about the meaning of each error Indicating Lamp Lamp Panel i genT Wired Residential AC Errors Commerical AC Errors Outdoor Dont ER Display Controller 88 Display Running Cooling Heating Floor Ceiling Display Type Defrosting mode 1 08 Defrosting mode 2 0A heating overload protection 0C Flash 3 pron 3 FEE 3 oE times times times Normal running ON Short open circuit Short open circuit of the liquid valve of he liquid valve Syn EED 5 b5 b5 Table 16 times temperature sensor temperature sensor Shor topei circuit Short open circuit of
4. 1 AIR ON or Air OFF can be selected by pressing this button TIMER ON ON will be displayed and blink for 5 seconds by pressing this button and soon adjust the time by pressing or within 5 seconds Each press will make the time increased or decreased by 1 minute If the button is pressed down for more than 2 seconds the time will be changed quickly in such a way firstly the value on the one s place is changed and then is the value on the ten s place Once Timer ON has been set already it can be canceled by repressing it Before the setting please adjust the CLOCK to the current actual time TIMER OFF TIME OFF can be activated by pressing this button with OFF blinking The method of setting is the same as that for TIMER ON HEALTH 4 This function can be activated or deactivated by pressing this button After the unit is turned on the default is HEALTH ON IFEEL This function can be activated by pressing this button and canceled by another press When this function is on the I FEEL information will be sent out in 200ms after each operation on the controller and the remote controller will send the temperature information to the main controller every 10 minutes 3 2 2 Guide for General Operation 1 After powered on press ON OFF and then the unit will start to run Note when powered off the guide louver of the main unit will close automatically 2 Press MODE to select the desired running mode
5. 21 20 14 2 19 18 17 16 Q gt e1n3eJedilo 0 1 2 3 4 5 6 7 8 9 10 11 12 Time Hour Sleep Curve under the HEAT mode 18 CONTROL C Q 9ANngexedu y t T t D 19 18 N 17 0 1 2 3 4 5 6 7 8 9 10 11 12 Time Hour d Sleep 3 Self Defined Sleep Mode How to set the sleep 3 curve 1 When the sleep 3 mode is selected press the Timer button to go to the setting status with 1 Hour displayed and the corresponding temperature of the sleep curve set last time displayed at the temperature area 2 Press A and V to change the set temperature 3 Press the Timer button to increase the time by one hour and the sleep curve temperature set last time will be displayed at the temperature area 4 Repeat the step 2 and step 3 until the temperature of eight hours has been set 5 Press Enter Cancel to make a confirmation to this setting See the figures below for how to set the sleep 3 curve Entericancel 4 Fan Mode Entericancel a Fan Mode ON O O O O Enter cancel 4 Fan Mode O O O O O O Function v Timer On Off a Timer On Off 6 oe 6 O q e E p22 Function v Select sleep3 and press Timer button to set Turn on the unit without turning sleep3 button to change temp Enter lancai a Fan Enter cancel 4 6 Do O d OO O 000 O O O o O s
6. Check if there is filth blockage to iii mE los i Refer to Care and Maintenance ub System pipeline is blocked gt Mainly check the inlet and outlet of main pipe connecting with each indoor unit and capillary of indoor and outdoor units Replace the parts like filter capillary and so on 60 MAINTENANCE Check if the pressure is really high pressure with the measurement of a manometer nn pe Malfunction display E3 Compressor Low Pressure Protection Replace the outdoor unit mainboard Check if pressure switch is normal gt Replace pressure switch Check if operation mode of indoor unit is properly set Refer to Instruction Manual of indoor unit Check if gas valve and liquid valve are completely open Completely open the valve Check if the panel of outdoor unit is firmly closed Close the panel heck if the air return and supply from heai exchanger of indoor unit and outdoor unit is smooth Remove the barrier Check if indoor unit fan and outdoor unit fan run Measure the fan motor and signal input Check if swing louver of indoor unit is completely open Measure swing motor and signal input Refer to Care and Mai
7. E heater Setting E heater auxiliary electric heating function In the Heating mode E heater is allowed to be turned on for improvement of efficiency Once the wired controller or the remote controller enters the Heating mode this function will be turned on automatically Press Function in the Heating mode to enter the E heater setting interface and then press Enter cancel to cancel this function Press Function to enter the E heater setting interface if the E heater function is not activated and then press Enter Cancel to turn it on Blow Setting Blow function After the unit is turned off the water in evaporator of indoor unit will be automatically evaporated to avoid mildew In the Cooling or Dry mode press Function till the unit enters the Blow setting interface and then press Enter Cancel to active this function When the Blow function is activated press Function to the Blow setting interface and then press Enter Cancel to cancel this function Notes a When the Blow function is activated if turning off the unit by pressing On Off or by the remote controller the indoor fan will run at the low fan speed for 10 min with BLOW displayed on the LCD While if the Blow function is deactivated the indoor fan will be turned off directly b Blow function is unavailable in the Fan or Heating mode Quiet Setting Quiet function consists of two kinds quiet and auto quiet Press Function till the unit enters the Qui
8. Outside View of the Wired Controller LCD of the Wired Controller 78 9 101112 1314 15 16 17 18 19 LCD of the Wired Controller No Symbols Description 1 zi Swing function 2 G Sleep function 3 types sleep 1 sleep2 and sleep 3 3 NN Running modes of the indoor unit Cooling Dry Fan and Heating 4 ks Defrosting function for the outdoor unit 5 uN Gate control function this function is yet unavailable for this unit 6 1 Lock function 7 pr High middle low or auto fan speed of the indoor unit 8 SHIELD Shield functions buttons temperature On Off Mode or Save is shielded or Save is shielded by the remote monitor 9 TURBO Turbo function 10 MEMORY Memory function The indoor unit resumes the original setting state after power failure and then power recovery 11 MASTER Master wired controller this function is yet unavailable for this unit 12 Ez It blinks under on state of the unit without operation of any button 13 SAVE Energy saving function 14 i i Ambient preset temperature value 15 E HEATER Electric auxiliary heating function 16 BLOW Blow function 17 Do B Timing value 18 QUITE Quiet function two types quiet and auto quiet 19 SET It will be displayed under the debugging mode 22 CONTROL 3 1 2 Buttons Buttons on the Wired Controller Function 1 2 3 4 Enter cancel N Mode OnlOff 6 r 8 Buttons on the Wire
9. ipe m CNi2 CN7 CN2 CNIS m V XT 7 X As VA VA NZ Gees TC nic BU ve BK va Er COMPONENT POSITION MAP ue m E TRANSFORMER TC AP XT ze Ml OTE APe is optional accessory TE If AP2 and APS are connected to FAN CT ap bl the unit at the some time the default CAPACITOR gy device will be AP2 FAN MOTOR pe 67 MAINTENANCE 5 2 3 Floor ceiling type MUL09 CFTA 2 f RD VR E e au E CY F 41 40 8 7 6 gt 39 Sn y 97 MAINTENANCE MUL09 CFTA NO Description Code Qty 1 Fixed Mount 26909426R 1 2 Louver Clamp 26112127 2 3 Guide Louver 10619403 1 4 Rotating Shaft 26909430 4 5 Front Connecting Plate 01349414P 1 6 Base Frame 26909448 1 7 Air Lead Plate sub assy 02229418 1 8 Supporter 01805288 1 9 Mid clapboard sub assy 01249416 1 10 Front volute casing 26905205 4 11 Rear side plate assy 01319430 1 12 Centrifugal fan 10425200 4 13 Support 1 01809417 1 14 Right Side Plate Sub Assy 01319429 1 15 Right Cover Plate 26909444 1 16 Installation Supporting Frame 01809402 1 17 Connection Board 02229406 1 18 Joint Slack 73018731 2 19 Rear Connecting Plate 01349416 1 20 Fan Motor 1570940901 1 21 Bar Clasp 70818405 1 22 Bar Clasp Sub assy 70815201 1 23 Rear volute casing 26905206 4 24 Cable Cro
10. nvenvensenseensvonvenvoervensenneenvencensennseonvenseonvenvensenseenvenseesvenneense 6 ELECTRIC WIRING WORK a soorsersaonsnossnseressedenssbennstsonsseneduusensenssnssansoowenbondensnsbendsenssknnestes 6 1 Wiring Principle c 6 2 Electric Wiring Design RRR 6 3 Specification of Power Supply Wire and Air Switch sve on venvoonvencensensenseensenseessoensensennvenvensensense ene 1 TROUBLE TABLE asus 1 1 Please check the following items before contact the maintenance serviceman eere 1 2 The conditions listed below are not classified into errors eee eese eee enitn esne anser 1 3 Error description e s rri 2 FLOW CHART OF TROUBLESHOOTING caian 3 WIRING DEA DRA IM ais yes is xeu me 3 2 Indo r UNM mE 4 DISASSEMBLY AND ASSEMBLY PROCEDURE OF MAIN PARTS 4 1 Outdoor Unit ps ts sassi 4 2 ndor O e seas 5 EXPLODED VIEWS AND PART LEBT ae 5 1 Outdoor Unit em vennens vene ens onsvensvenvensvenvenvensenseenseenvenneenvensenneenvenvenseesveonvenneenvenvensenseeneenvenveenvensen 5 2 Indoor Unit PRODUCT PRODUCT PRODUCT 1 MODELS LIST 1 1 Outdoor
11. when indoor unit runs under the heating mode and at 16 C it will activate the forcible defrosting by pressing the and buttons alternately three times in five seconds How to quit this function the function will quit when the mode of indoor units conflicts 2 2 11 Switchover of the Defrosting Modes Under the unit is under the Off status if H1 is not displayed on the wireless controller then the unit will go to the defrosting mode when it is turned on through the wireless controller Under the unit is under the Off status if H1 is displayed on the wireless controller the unit will go the defrosting mode 2 when it is turned on through the wireless controller Under the unit is under the Off status it is available to switch over the defrosting mode 1 and defrosting mode 2 by pressing the Mode and Blow buttons simultaneously 2 3 Control Function of Indoor Unit 2 3 1 Running Mode 1 COOL 2 DRY 3 HEAT 4 AUTO 5 FAN 2 3 2 Basic Functions of the System a COOL Mode Under this mode the fan and swing function goes as the set conditions and the set temperature range is 16 C 30 C b DRY Mode Under this mode the fan will run at the low speed and the swing function is performed under the set conditions The set temperature range is 16 30 C c FAN Mode Under this mode only the fan of the indoor unit runs And if the auto speed is set the fan will run under the same condition
12. E ind i id E 44 en 52 en 57 Unit E anti freezing protection temperature sensor error temperature sensor error 45 Unit D indoor ambient 53 Unit E indoor unit pipe outlet cs user textus tenor temperature sensor error temperature sensor error 58 MAINTENANCE Error description of outdoor refrigerant pipe detection function Wiring error or component error Unit which is detecting Unit which isn t detecting SE 01 SE 02 m SE 03 SE 04 SE 05 Indoor unit gas pipe connection error Unit which is detecting or component error 5P 01 SP 02 E 5P 03 en 5P 04 5P 05 ze Outdoor Unit MUL36INV 4 and MUL42INV 5 Note Refer to the real products for the exact position of each component Once errors are displayed on the controller please shut off the air conditioning unit and contact the professionally skilled personnel for troubleshooting 59 MAINTENANCE 2 FLOW CHART OF TROUBLESHOOTING Service personnel shall collect the malfunction information as much as possible and research them thoroughly list these electrical parts which may cause malfunction service personnel shall be able to determine the specific reason and solve the faulted parts Observe the status of the complete device and do not observe the partial It is advised to start from the simple operation during analyzing judging and confirming malfunction r
13. Phase over current Compressor over Flash 3 Flash 3 Flash 3 PS oE oE protection current protection times times times Drive board Communication error communication error for between the inverter driver P6 Ke posu nn oE oE the commercial unit to the main controller Short open circuit Short open circuit of the of the module of the of the module P7 FN a Fin ep 3 oE oE times times times temperature sensor temperature sensor Module temperature Module temperature P8 Flash 3 Flash 3 Flash 3 oE oE protection protection times times times AC contact protection AC contact protection po Flash 3 Flash 3 Flash 3 oE oE for the commercial unit times times times Circuit sensor error Circuit sensor error Pc iesus j Hom 3 Flesh a oE oE t mes t mes t mes Transducer BA Transducer connection Flash 3 Flash 3 Flash 3 protection for the Pd oE oE protection times times times commercial unit AC current AC current PA Flash 3 Flash 3 Flash 3 oE oE protection input side protection input side times times times Temperature drift protection for the Temperature drift protection PE en 3 Pn 3 Flash gt oE oE A times times times commercial unit Drive board ambient Drive board ambient Flash 3 Flash 3 Flash 3 temperature sensor error PF E oE oE temperature sensor error times times times for the commercial unit DC link high voltage DC link low voltage PL Flash 3 Flash 3 Flash 3 oE oE protection protection times times times DC lin
14. Unit Capacity Units Power Series Model Cooling Heating Ref Supply Appearance kW kW MUL36INV 4 9 789 11 Outdoor R410A 2202 240V 1Ph 50Hz Unit MUL42INV 5 11 6 13 1 2 Indoor Unit 1 2 1 Duct type Capacity Units Model Ref Power Series ode Cooling Heating es Supply ppearance kW kW MUL09 DTA 2 5 2 80 MULI2 DTA 4 3 3 85 220 240V Duct Type MULI8 DTA 3 5 50 R410A Indoor Unit 1Ph 50Hz MUL21 DTA 6 0 6 60 MUL24 DTA 71 8 00 1 2 2 Cassette type Capacity Units Model Ref Power A ode ef earance Series Cooling Heating Supply PP kW kW MUL12 FWCA 33 3 85 220 240V MULI8 FWCA 5 5 50 R410A m 1Ph 50Hz Indoor Unit MUL24 FWCA 7 1 8 00 1 2 3 Floor ceiling type Capacity Units Model Ref Power Appearance Series Cooling Heating s Supply Pp kW kW MUL09 CON 25 2 80 zum Floor MUL12 CON 3 3 3 85 A ili 220 240V due Ne 1Ph 50H 1Ph 50Hz Indoor MUL18 CON 5 0 5 50 Unit MUL24 CON TU 8 00 PRODUCT 2 NOMENCLATURE NO Description Options 1 Name Model DTA Duct type 2 Product Type FWCA Cassette type CFTA Floor Ceiling type 3 Cooling Heating H Heat pump 12 represents 12000Btu h 4 l Cooling Capacity LKW 3 412KBtu 5 Series Series code Voltage rower supply 220 240V 1Ph 50Hz 7 Refrigerant
15. closed to OP c Cooling mode transfers to heating mode When the unit transfers to heating mode the 4 way valve is energized after the compressor runs for 40s The other disposals are the same as stopping in cooling mode d 4 way valve In this mode the 4 way valve is closed e Outdoor fan control in cooling mode The outdoor fan starts before 5s of the starting of compressor The outdoor fan will run in high speed for 3min after starting and then it will run in set speed The fan shall run at every speed for at least 80s When the quantity of running indoor unit is changed the unit will enter the control described in 1 3 5 1 and 1 3 5 2 When the compressor stops the outdoor fan runs at present speed and stops after Imin 2 1 2 Dry Mode The dry conditions and process are the same as those in cooling mode The status of 4 way valve closed The temperature setting range 16 30 C Protection function the same as those in cooling mode e In dry mode the maximum value A of the capacity requirement percentage of single unit is 90 of that in cooling mode The open condition of the electronic expansion valve outdoor fan and compressor is the same as those in cooling mode ME SP 2 1 3 Heating Mode a Heating conditions and process When one of the indoor units reaches the heating operation condition the unit starts heating operation b Stopin heating operation a When all the indoor units reach the stop condition the
16. time will increase decrease by 0 5hr every 0 5s Swing Setting Swing On Press Function under on state of the unit to activate the swing function In this case will blink After that press Enter cancel to make a confirmation Swing Off When the Swing function is on press Function to enter the Swing setting interface with 3 blinking After that press Enter cancel to cancel this function Note m Sleep Save Turbo Blow or Quiet setting is the same as the Swing setting n After the setting has been done it has to press the key Enter cancel to back to the setting status or quit automatically five seconds later Sleep Setting Sleep on Press Function under on state of the unit till the unit enters the Sleep setting interface Then press Aor V to switch among Sleep 1 Sleep 2 and Sleep 3 After that press Enter cancel to confirm the setting Sleep off When the Sleep function is activated press Function to enter the Sleep setting interface After that press Enter cancel to can this function Sleep off is default after power failure and then power recovery and the sleep functions is unavailable under the fan mode There are three Sleep modes Sleep 1 Sleep 2 and Sleep 3 1 Sleep 1 In the Cooling or Dry mode the temperature will increase by 1 C after the unit runs under Sleep 1 for Ihr and 1 C after another 1hr After that the unit will run at this temperature In the Heating mode the temperature will decrease b
17. without the wired controller if the timer is not set for the last remote control instruction the system will memorize this last instruction and works following it if the timer is set it will be canceled as the power failure occurs and will have to be reset d When the indoor unit works with the wired controller it will wok as the message sent by the wired controller after it is powered on again h Forcible Defrosting When the unit is on and runs under the HEAT mode and at 16 C set temperature the indoor unit will go to the forcible defrosting by pressing the t and buttons alternatively on the wireless controller for five seconds and meanwhile a forcible defrosting signal will be sent to the outdoor unit When the indoor unit receives a forcible defrosting signal from the outdoor unit it will quit the forcible defrosting setting and cease to sending the forcible defrosting single to the outdoor unit 1 Selection of the Indoor Temperature Sensor a For the duct type indoor unit Under the COOL HEAT DRY or FAN mode the return air temperature sensor is adopted while under the HEAT mode it is the receiver temperature sensor For the cassette type floor ceiling type indoor unit Under all modes the return air temperature sensor is adopted b When the duct type cassette type or the floor ceiling type indoor unit works with the wired controller the ambient temperature sensor can be set in the following four ways QD 01 The in
18. 3 Press or to set the desired temperature it is unnecessary to set the temperature under the AUTO mode 4 Press FAN to set the fan speed AUTO LOW MID or HIGH 5 Press SH to select the swing angle 28 CONTROL 3 2 3 Guide for Optional Operation About BLOW This function indicates that moisture in the evaporator of the indoor unit will be dried after the unit is stopped to avoid mould a BLOW ON When press the ON OFF button to turn off the unit the indoor fan will continue running for about another 10 minutes at the low speed In this case the indoor fan can be stopped directly by pressing the button BLOW b BLOW OFF When press the ON OFF button to turn off the unit the whole unit will be stopped completely About AFTERHEAT BLOW Under the Heat mode or Auto Heat mode if the unit is turned off the compressor and outdoor fan will stop running immediately and the upper and lower guide board will rotate to the horizontal position while the indoor fan will still run at the low fan speed Then 10 seconds later the unit will stop completely About AUTO RUN When AUTO RUN is selected the setting temperature will not be displayed on the LCD and the unit will choose the suitable running mode automatically in accordance with the room temperature About TURBO If this function is activated the unit will run at super high fan speed to cool or heat quickly so that the ambient temperature will approaches the pr
19. 430 1 12 Centrifugal fan 10425200 4 13 Support 1 01809417 1 14 Right Side Plate Sub Assy 01319429 1 15 Right Cover Plate 26909444 1 16 Installation Supporting Frame 01809402 1 17 Connection Board 02229406 1 18 Joint Slack 73018731 2 19 Rear Connecting Plate 01349416 1 20 Fan Motor 1570940901 1 21 Bar Clasp 70818405 1 22 Bar Clasp Sub assy 70815201 1 23 Rear volute casing 26905206 4 24 Cable Cross Loop 76510021 1 25 Filter 2 07216221 1 26 Sensor 3900020723 1 27 Evaporator Assy 01029475 1 28 Press Plate of Water Lead flume 26909442 1 29 Connection Board 01344115 1 30 Water Tray Assy 01289404 1 31 Front Grill sub assy 01579403 1 32 Top Cover Board Sub assy 01269409 1 33 Support 2 01809418 1 34 Left Side Plate Sub Assy 0131942801 1 35 Rotating Shaft 26909412 1 36 Rotating Shaft 26909413 1 37 Step Motor 1521240206 1 38 Electric Box Assy 01399517 1 39 Left Cover Plate 26909443 1 40 Installation Supporting Frame 01809401 1 41 Display Board 30296317 1 42 Remote Controller 305100492 1 43 Display Board 30294220 1 44 Terminal Board 42010178 1 45 Capacitor CBB61 33010089 1 46 Electric Box Cover 01429420 1 47 Transformer 4311023701 1 48 Main Board 30226350 1 49 Electric Box 01429419 1 50 Room Sensor 39000191 1 100 MAINTENANCE MUL18 CFTA 27 26 23 VPE PS N22 el 101 MAINTENANCE
20. Adjust the setting of the remote or wired controller Cooling Heating is abnormal Opened door and window Close the door and window Direct sunlight Hang a curtain or blinds over the window Too much people in the room Too much heat sources in the room Reduce the heat sources Dirty filter screen Clean the filter screen Note If the air conditioner still runs abnormally after the above check and handling please contact the maintenance serviceman at the local appointed service center and also give a description of the error occurred as well as the model of the unit 1 2 The conditions listed below are not classified into errors Conditions Causes T The overload protection switch of the unit When restart the unit soon after it is stopped The unit does not run let the startup delayed for three minutes As soon as power is on The unit will stand by for approximate one minute The unit blows out mist When the cooling operation starts The hi humidity air indoor is cooled quickly M Itis the sound generated during the initialization The unit clatters as soon as it starts running of the electronic expansion valve The unit swishes during the cooling operation It the sound when the refrigerant gas runs inside the unit The unit generates The unit swishes when it is started or stopped It is the sound when the refrigerant gas stops running noise E 7 EE The unit
21. After the compressor stops for five minutes if it is detected that the low pressure protection switch is opened then a low pressure protection signal will be send out If it is detected continuously for three seconds that the low pressure protection switch is opened after the compressor stops for less than five minutes then a low pressure protection signal will be send out However if the low pressure protection occurs twice in one hour then it becomes unrecoverable and has to be recovered by powering the outdoor unit again b Low Pressure Protection during the Operation a When it is detected continuously for three seconds that the low pressure protection switch is opened then the whole unit should be shut off and a low pressure protection signal should be sent to the indoor unit b On condition that a low pressure protection error occurs and the whole unit has stopped for more than three minutes and it is detected continuously for six seconds that the low pressure protection switch is closed then this error can be eliminated However if the low pressure protection occurs twice in one hour then it has to eliminate the error by powering the outdoor unit again 16 CONTROL 2 2 7 Compressor overload protection If the compressor overload switch is detected having movement the indoor unit will display the corresponding malfunction as it stops when the indoor temperature reaching set temperature When the compressor stops for more than 3
22. E3 E3 protection reserved protection times Compressor discharge high temperature Compressor discharge high E4 Flash 4 E4 E4 B temperature protection times protection Whole unit over Whole unit over ES Flash 3 Flash 3 Flash 3 oE oE current protection current protection times times times Communication error Communication error Sh Flash 6 between the indoor between the indoor own E6 E6 Table 16 times and outdoor units and outdoor units Mode conflict Mode conflict Shown as ppm 4 E7 E7 Table 16 times Overload protection Overload protection E8 Flash 3 Flash 3 Flash gt oE oE times times times Anti cold blow protection Indoor unit water E9 Flash Flash E9 E9 overflow error d B E 7 Ouick Quick Quick Trial run trial operation Trial run trial operation dd Hash Hash Hash dd dd Refrigerant a Quick Quick fecovety mode Refrigerant recovery mode Fo Hash Hash Fo Fo Drive module resetting for the IPM Drive module resetting PO REN 3 Pah d Flash 3 oE oE A times times times commercial unit ick ling IPLV test Quic PO Min cooling heating Cooling de flash capability test code FU Quick d p y Cooling IPLV test er PO 56 MAINTENANCE Cooling level AA Quick P3 Mid Cooling heating performance test P3 flash capability test code Level AA cooling Quick P3 performance test flash
23. LCD displays After that repress these two buttons at the same time for 5s to quit this function Under the Lock state any other button press won t get any response 25 CONTROL 2 Memory Memory switchover Under the Off state of the unit press Mode and A at the same time for 5s to switch memory states between memory on and memory off When this function is activated Memory will be displayed If this function is not set the unit will be under the Off state after power failure and then power recovery Memory recovery If this function has been set for the wired controller the wired controller after power failure will resume its original running state upon power recovery Memory contents On Off Mode set temperature set fan speed Save function and Lock function 3 Enquiry of the Outdoor Ambient Temperature Under the On or Off state of the unit press Enter Cancel for 5s and the outdoor ambient temperature will be displayed after a sound of click This enquiry state will quit by pressing Function or On Off or during the temperature adjustment If there is not any operation for 10s it will also quit automatically 3 1 4 Errors If there is an error occurring during the operation of the system the error code will be displayed on the LCD If multi errors occur at the same time their codes will be displayed circularly Note In event of any error please turn off the unit and contact the professionally ski
24. O Function M Timer On Off Timer On Off Function M On Off Steeping curve setting is finished Set sleep at this time point e Quiet Quite Function It is divided into the Quiet mode and Auto Quiet mode Mode Press Increase or Decrease Press Timer button to set next time point 19 CONTROL a Under the Quiet mode the low fan speed will be kept and is unchangeable b Under the Auto Quiet mode the fan speed changes in accordance with the difference of the indoor ambient temperature and the set temperature f Timer a Timer On When the unit is powered on but in the idle condition it is available to set when to start the unit Then when the unit starts it will run as the previously set mod The set range of the timer is 0 5 24 hours with a interval of 0 5 hour b Timer Off When the unit is on it is available to set when to stop the unit The set range of timer is 0 5 24 hours with a interval of 0 5 hour g Memory a Memorizing Objects modes AUTO COO DRY FAN HEAT swing set temperature set fan speed etc b When the indoor unit works without the wired controller it will resume the working condition as the power failure occurs after it is powered on again When the indoor unit is with the wired controller it is available to set the memory function by pressing the corresponding buttons of the wired controller c When the indoor unit works
25. P 66 66 Loading quantity 40 GP 132 132 40 HQ 132 132 Model Heat pump MULI8 CFTA MUL24 CFTA Cooling kW 5 7 1 Capacity Heating kW 5 5 8 Power supply V Ph Hz 220 240 1 50 220 240 1 50 Motor power input kW 0 11 0 11 m h 950 0 1250 Air flow volume CFM 559 0 736 Sound pressure level H L dB A 45 40 48 40 Output kW 0 061 0 061 Fan motor Running current A 0 588 0 588 Gas inch 1 2 012 7mm 5 8 15 9mm Connecting pipe Liquid inch 1 4 6 35mm 3 8 9 52mm Flare Connection Flare Connection Connection method External dia mm 17 17 Drain pipe Thickness mm 1 75 1 75 Outline dimension WxDxH mm 122x700x225 1220x700x225 Package dimension WxDxH mm 1340x820x300 1340x820x300 Net Weight kg 40 0 45 Gross weight kg 50 0 54 20 GP 66 66 Loading quantity 40 GP 132 132 40 HQ 132 132 PRODUCT Notes a The rated cooling capacity data is measured under the following work condition Indoor Temperature is 27 C DB 1 9 C WB Outdoor Temperature is 35 C DB The rated heating capacity data is measured under the following work condition Indoor Temperature is 20 C DB Outdoor Temperature is 7 C DB 6 C WB 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 4 3 Working Temperature Range I
26. R410A 8 Compressor Frequency DC inverter type PRODUCT 3 FUNCTION Function Duct type Cassette type Floor ceiling type Fan operation Mode e e e Auto Swing Controller e e Timer Selector e Auto Mode Operation e e e For Comfortable Cool Mode Operation e e Ait Conditioning Heat Mode Operation o e Dry Mode Operation e e Fan Mode Operation o e e Sleep mode setting e e e Drain Pump e gt Wired Controller e e e For Flexible Control Wiredless Remote Controller e e e Have Functions No Functions PRODUCT 4 2 3 Floor ceiling type Model Heat pump MULO09 CFTA MULI2 CFTA Cooling kW 2 5 3 5 Capacity Heating kW 2 8 3 85 Power supply V Ph Hz 220 240 1 50 220 240 1 50 Motor power input kW 0 055 0 055 m h 650 0 650 0 Air flow volume CFM 383 0 383 0 Sound pressure level H L dB A 40 36 40 36 Output kW 0 3 0 3 Fan motor Running current A 0 297 0 297 Gas inch 3 8 9 52mm 1 2 12 7mm Connecting pipe Liquid inch 1 4 6 35mm 1 4 6 35mm Connection method Flare Connection Flare Connection External dia mm 17 17 Drain pipe Thickness mm 1 75 1 75 Outline dimension WxDxH mm 1220x700x225 1220x700x225 Package dimension WxDxH mm 1340x820x300 1340x820x300 Net Weight kg 40 0 40 0 Gross weight kg 50 0 50 0 20 G
27. ROLLER sooner eeens a ska 3 1 Wired Remote Controller eoeee eter ik ii 3 2 Wireless Remote Controller eee eooe so eno aeo Saee aeo novos os aeo eo Foe on Da Foe RE i i ki 1 PRECAUTIONS FOR INSTALLATION ssssssscocssessssnssonsscosensasscnsssossssastsonissveosivsssenssectsnensess 1 1 Precautions for Installation sovsenersssoveerervernne 1 2 Key Points of Installation Ee rSv 2 FLOW CHART OF INSTALLATION seen 3 OUTDOOR UNITINSTALLATIO coincidi 3 1 Betore InstalatiOi DM AA 3 2 rebut sm gesto dicilur iii ka in a ai seuss s a KE Dimension Data siss M 3 5 Installation Clearance Data nenn sen eis 4 INDOOR UNIT INSTALLATION ci saose osusu ossos roseo scasso essasi 4 1 Installation of Duct Type veveonvennennveneenvenseenseorvenseonvenvensensenseenvenveonvensennenseenvenseonvennvenvensenseenvensenne 4 2 Installation of Cassette Type ese envenvennvenvensensenseennvenvennvenvennensvenvenvenseesseenvenveonvenvensensenseenseenvenveonvensen 4 3 Installation of Floor Ceiling Type envensensenseonvensenseeonvensennvenvennensenseensvonveoneensensenneenvensensensveonvenseenveneensen 5 REFRIGERATION PIPING WORK cion ac 5 1 Connection between Indoor and Outdoor Units eese eee onsoesseonvennoonvencensenseenseenvenveonvensen 5 2 Refrigerant Charging and Trial Running
28. as the COOL mode d HEAT Mode a Under this mode the set temperature rang is 16 C 30 C b The defrosting symbol H1 will be displayed when the defrosting signal is received from the outdoor unit e AUTO Mode a When the ambient temperature is higher than 25 C the unit will run as the COOL mode b For the cooling and heating unit if the ambient temperature is or lower than2 0 C 72 F the unit will run as the HEAT mode c When the indoor ambient temperature is higher than 20 C but lower than 25 C the unit which starts to work under the AUTO or DRY mode will shift to the FAN mode while the unit which starts to work under other mode will 17 CONTROL keep the current running mode f Mode Conflict When the running modes of the unit which is started just now and unit which has run conflict the former one will show the error code E7 2 3 3 Other Control a Beeper Control When the controller is powered on or it receives a valid either press button signal or remote control signal the beeper will utter a warning tone b Auto Speed Control Under the HEAT mode If the ambient temperature is equal or higher than the set temperature the fan will run at the low speed If the ambient temperature minus 3 C is equal or lower than the set temperature the fan will run at the medium speed If the ambient temperature minus 3 C is lower than the set temperature minus 3 C the fan will run at the high
29. compressor stops and the outdoor fan stops after 1 min b Some of the indoor units reach the stop condition The compressor reduces the frequency immediately and operates according to the required frequency c Heating mode transfers to cooling mode dry mode fan mode The compressor stops The outdoor fan stops after 1 min The status of 4 way valve energized c Outdoor fan control in heating mode The outdoor fan starts before 5s of the starting of compressor and then it will run in high speed for 40s The fan shall run at every speed for at least 80s When the compressor stops the outdoor fan stops after 1 min d Defrosting function When the defrosting condition is met the compressor stops the electronic expansion valve of all indoor units open in big angle the outdoor fan stops after the stop of the 4 way valve meanwhile the 4 way valve reverses the direction after the 4 way valve reverses the direction the compressor starts then begin to calculate the time of defrosting the frequency of the compressor rises to reach the defrosting frequency e Oil returned control in heating mode a Oil returned condition The whole unit is operating in low frequency for a long time b Oil returned process in heating mode The indoor unit displays H1 c Oil returned finished condition in heating mode The duration reaches 5min 15 CONTROL 2 1 4 Fan Mode The compressor the outdoor fan and the 4 way valve are closed tempe
30. ctronic v Start Indicating Light Is ON Volume Air Supply Direction A v CoolingH Is The Protecting Is The Start Indicating Start Indicating LightOFF Display The Last Setting s Of Air Start Display Flickering Abnormality Code Display Press The Start Stop Switch gt Start Indicating Light ON Air Volume Setting Display Displaying Air Supply Direction Setting Display Displaying Temperature Setting Display Displaying Start Display OFF Abnormal Mode Display y Cooling Of Heatig Y Cooling Operation Heating Op eration Air Supply Or Temperature Temperature Adjustment eating Air Supply BlowerStop Electronic Expansion Guide Louver Stop Air Supply Air Supply Operation CONTROL 1 1 Cooling Dehumidfying Operation Cooling Operation There Is Not Guide Louver There Is v Guide Louvers Swing v Fan Motor Operation In The Process Of Preventing Restart Operatior 3 Minutes Temperature No Adjustment v Fan Motor Stop Electronic Expansion Valve Close Electronic Expansion Valve Capacity Control Go To The Previous Page 13 CONTROL 1 2 Hea
31. d Controller 5 Function of the Buttons No Name Function Function selection and cancellation 1 Enter cancel Press it for 5s to examine the outdoor ambient temperature 2 A Running temperature setting of the indoor unit range 16 30 C Timer setting range 0 5 24 hr 6 v 8 Switchover between quiet auto quiet or among sleep1 sleep2 sleep 3 3 Fan Setting of the high middle low auto fan speed 4 Mode Setting of the Cooling Heating Fan Dry mode of the indoor unit 5 Function Switchover among the functions of Swing Sleep Turbo Save E heater Blow Quiet etc T Timer Timer setting 8 On Off Turn on off the indoor unit Press them for 5s under off state of the unit to enter cancel the Memory function If memory is set 4 2 A Mode indoor unit after power failure and then power recovery will resume the original setting state If not the indoor unit is defaulted to be off after power recovery Memory off is default before delivery By pressing them at the same time under off state of the unit gg will be displayed on the wired 3 6 Fant V controller for the cooling only unit while f will be displayed on the wired controller for the cooling and heating unit Upon startup of the unit without malfunction or under off state of the unit press them at the same time 2 6 A V for 5s to enter the lock state in which case any other buttons won t respond the press Repress them for 5s to q
32. door temperature sensor is set for the return air 2 02 The indoor temperature sensor is set for the wired controller 3 03 The indoor temperature sensor is set for the wired controller under the HEAT mode and for the return air under any other mode 4 04 The indoor temperature sensor is set for the return air under the HEAT mode and for the wired controller under any other mode c Setting of the Ambient Temperature Sensor of the New Screen Touch Wired Controller When the unit is off it is available to go to the debugging status by pressing the Function and Timer buttons for five seconds and the corresponding code will be displayed on the temperature area of the wired controller There are four kinds of codes which can be adjusted through the Y A button The third one is the default code The setting of the ambient temperature sensor of the wired controller should be memorized The Enter Cancel button shall be pressed to confirm and leave the setting If there is no response to the last button press within 20 seconds then the system will quit the setting and go to the normal Off status but with the setting still saved j Switchover of the Defrosting Mode On condition that the unit is off if H1 is not displayed on the wireless controller then the unit will go to the setting status of the Defrosting Mode 1 as it is turned on through the wired controller Then once the indoor unit receive
33. e Controller 305100492 1 45 Display Board 30294220 1 46 Terminal Board 42010178 1 47 Capacitor CBB61 33010026 1 48 Electric Box Cover 01429420 1 49 Transformer 4311023701 1 50 Main Board 30226350 1 51 Electric Box 01429419 1 52 Room Sensor 39000191 1 102 MAINTENANCE MUL24 CFTA 103 MAINTENANCE 104 MUL24 CFTA NO Description Code Qty 1 Cable Cross Loop 76510021 4 2 Room Sensor 39000191 1 3 Louver Clamp 26112127 2 4 Guide Louver 10619403 2 Front Connecting Plate 01349414P i 6 Rotating Shaft 26909340 4 7 Air Louver 10699404 16 8 Base Frame 26909448 1 9 Induced air plate subassembly 02229418 1 10 Supporter 01805288 1 11 Mid clapboard sub assy 01249416 1 12 Front volute casing 26905205 4 13 Rear side plate assy 01319430 1 14 Centrifugal fan 10425200 4 15 Supporter 01809417 1 16 Support Of Motor Bearing 01792408 2 17 Axile Bush 10542704 2 18 Right Side Plate Sub Assy 01319429 1 19 Right Cover Plate 26909444 1 20 Installation Supporting Frame 01809402 1 21 Connection Board 02229406 1 22 Joint Slack 73018731 2 23 Rear Connecting Plate 01349416 1 24 Fan Motor 15709409 1 25 Bar Clasp 70818405 1 26 Hoop subassembly 70815201 1 27 Rear volute casing 26905205 4 28 Drainage Pipe Sub assy 05235434 1 29 Filter 07212001 1 30 Temperatur
34. e Sensor 3900020723 1 31 Evaporator Assy 01029474 1 32 Press Plate of Water Lead flume 26909442 1 33 Water Tray Assy 01289404 1 34 Front Grill sub assy 01579403 2 35 Top Cover Board Sub assy 01269409 1 36 Supporter 01809418 1 37 Left Side Plate Sub Assy 0131942801 1 38 Rotating Shaft 296909412 1 39 Rotating Shaft 12690941 3 40 Step Motor 1152124020 6 41 Installation Supporting Frame 01809401 1 42 Electric Box Assy 01399518 1 43 Left Cover Plate 26909443 1 44 Remote Controller 305100492 1 45 Display Board 30294220 1 46 Display Board 30296317 1 47 Terminal Board 42010178 1 48 Capacitor CBB61 33010027 1 49 Electric Box Cover 01429420 1 50 Transformer 4311023701 1 51 Main Board 30226350 1 52 Electric Box 01429419 1
35. eason then conduct the complicated operations such removal of device part replacement and refrigerant filling Find the malfunction reason carefully as unit may occur several malfunction at the same time and one malfunction may develop into several malfunction so entire system analysis shall be established to make the judged result exact and credible Malfunction display El Compressor High Pressure Protection High pressure protection gt a Check if the pressure is really high pressure with the Check if pressure switch is Replace the outdoor measurement of a manometer pe normal unit mainboard I pue Replace pressure switch Refer to Instruction Manual of indoor unit Check if operation mode of indoor unit is properly set Check if gas valve and liquid valve are completely open Completely open the valve Check if the panel of outdoor unit is firmly closed Close the panel gt T uu M O _ eck if the air return and supply from heat N exchanger of indoor unit and outdoor unit is y Remove the barrier ar smooth A _ N Measure the fan motor and signal input Check if indoor unit fan and outdoor unit fan run Check if swing louver of indoor unit is Measure swing motor and completely open signal input Y N
36. eck the direction of the plug and socket Removethe sensor to check if the resistance value is ok Replace temperature sensor Replace mainboard of the indoar uint Malfunction display F5 Failure of Exhaust Temp Sensor Failure of Exhaust Temp sensor Check if the plug of the temperature sensor is correctly connected with socket on the mainboard Check the direction of the plug and socket Removethe sensor to check if the resistance value is ok Replace temperature sensor Replace mainboard of the indo uint 64 MAINTENANCE 3 2 3 Floor ceiling type MULO9 CFTA MUL12 CFTA MUL18 CFTA MUL24 CFTA MANUAL PANEL Receiving Board Me AP2 AP3 PIPE TEMP ROOM TEMP SWING MOTOR SENSOR SENSOR B3 3 SE m 20K 5 4 9 3 0 Ne p lt a Eum Pam rs A A L4 A A CN20 CNS CN22 CNe3 CNe4 CNS CN3 E 2 SWING P nicl In Env Dutdoor Unit 3 pe AP 1 N 1 N 1 X1 AC N EBK 2 x3 CUM RD ___ Xe AC L TR IN TR OUT Pump Check
37. eset temperature as soon as possible 29 MAINTENANCE MAINTENANCE MAINTENANCE 1 TROUBLE TABLE A WARNING a In the event of abnormal conditions like stinky smell please shut off the main power supply immediately and then contact the appointed service center otherwise the continuous abnormal running would damage the air conditioning unit and also would cause electric shock or fire hazard etc b Do not repair the air conditioning personally but instead contact the professionally skilled personnel at the Toyotomi appointed service center as the incorrect repair would cause electric shock or fire hazard etc 1 1 Please check the following items before contact the maintenance service man Conditions Causes Corrective Actions Broken fuse or opened breaker Change the fuse or close the breaker Power off Restart the unit when power on Thewmitdses not run Loosened power supply plug Plug the power supply properly Insufficient batteries voltage Change new batteries of the remote controller Remoter controller out of the control scope Keep the control distance within 8 meters e bi Clogged inlet outlet of the indoor outdoor unit Clear the obstacle Clogged inlet outlet of the indoor outdoor unit Clear the obstacle Improperly set temperature Adjust the setting of the remote or wired controller Too low set fan speed Adjust the setting of the remote or wired controller Incorrect air direction
38. f Multisplit Inverter Heat Pump The outdoor and indoor units start to work once the power is switched on During the cooling operation the low temperature low pressure refrigerant gas from the heat exchanger of each indoor unit gets together and then is taken into the compressor to be compressed into high temperature high pressure gas which will soon go to the heat exchanger of the outdoor unit to exchange heat with the outdoor air and then is turned into refrigerant liquid After passing through the throttling device 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 achieve the desired refrigeration purpose During the heating operation the four way valve is involved to make the refrigeration cycle run reversely The refrigerant radiates heat in the heat exchanger of the indoor unit so do the electric heating devices and absorb heat in the heat exchanger of the outdoor unit for a heat pump heating cycle so as to achieve the desired heating purpose 10 CONTROL CONTROL CONTROL CONTROL 1 OPERATION FLOWCHART 12 Connecting To Power Supply Y Expansion Valve Initialization Of Be
39. failure for the failure for the LE Flash 3 Flash 3 Flash 3 oE oE B 3 times times times commercial unit commercial unit Over speed for the Over speed LE Flash 3 Flash 3 Flash 3 oE oE commercial unit times times times Short open circuit of the temperature sensor at the inlet of the condenser coil d A i i for the commercial unit Short open circuit of the temperature sensor at the outlet of the AT de condenser coil for the commercial unit Memory card error EE 57 Frequency limitation degradation for module circuit protection for phase circuit Frequency limitation degradation for module EU if temperature protection Frequency limitation Flash 6 degradation for overload E9 i times i Frequency limitation degradation for F8 Flash 8 circuit protection of times the whole unit Frequency limitation degradation for module F9 Flash 9 circuit protection times for phase circuit Frequency limitation degradation for anti FH Phan quae times times freezing protection No indoor fan motor H6 Eun u times C Flash dema tk eterik i HE y 14 8 EP times Indoor and outdoor LP F lash 19 units unmatched times Flash Compressor phase Ul 12 circuit detection error t mes Flas
40. h DC link voltage drop error U3 20 times Zero detection U8 F lash 17 circuit error times Nominal cooling heating capability test code H i Max cooling heating capability test code i F The words in gray means the corresponding function is unavailable Error Code Error Description Error Code Error Description Error Code Error Description 13 Unit A indoor unit pipe outlet 23 Unit B indoor unit pipe outlet 33 Unit C indoor unit pipe outlet temperature sensor error temperature sensor error temperature sensor error 14 Unit A indoor pipe inlet 24 Unit B indoor pipe inlet 34 Unit C indoor pipe inlet temperature sensor error temperature sensor error temperature sensor error 15 Unit A indoor ambient 25 Unit B indoor ambient 35 Unit C indoor ambient temperature sensor error temperature sensor error temperature sensor error 16 Unit A mode conflict 26 Unit B mode conflict 36 Unit C mode conflict Unit A anti freezi Unit B anti freezi P 17 re ne 27 mr MEE 37 Unit C anti freezing protection protection protection are Unit E indoor pipe inlet 41 Unit D communication error 46 Unit D mode conflict 54 temperature sensor error 42 Unit D indoor pipe midway 47 Unit D anti freezing 55 Unit E indoor ambient temperature sensor error protection temperature sensor error Unit D indoor unit pipe outlet En 43 51 Unit E communication error 56 Unit E mode conflict temperature sensor error Unit D ind ipe inlet Unit
41. he air conditioner runs in smaller temperature range is realized by setting 24 CONTROL lower limited value in the Cooling or Dry mode and upper limited value in the Heating mode Save Setting for Cooling Under the On state and in the Cooling or Dry mode of the unit press Function to enter the Save setting interface and then press Aor V to adjust the lower limited value in the Cooling mode After that press Enter Cancel to activate the Save function The initial lower limited value in the Cooling mode is 26 C When the Save function is activated press Function to enter the Save setting interface and then press Enter cancel to cancel this function Save Setting for Heating Under on state or in the Heating mode of the unit press Function to enter the Save setting interface and then press Aor V to adjust upper limited value in the Heating mode After that press Enter Cancel to activate the Save function for heating The upper initial limited value in the Heating mode is 20 C After the Saving function is activated press Function to enter the Save setting interface and then press Enter Cancel to cancel this function Notes a If press Function on the Save setting interface or if there is not any operation for 5s after last button press the Save setting will be canceled automatically by the system with memorizing the present setting data b When power is on after the power failure the Save function will be memorized
42. he value If the button is pressed down for more than 2 seconds the value on ten s place will increase by 1 in every 0 5 seconds After that repressing this button and then symbol stops blinking which indicates the setting is made successfully After powered on the default value is 12 00 with displayed Once the symbol G is displayed the current time is the Clock value otherwise it is the Timer value LIGHT Light On and Light Off can be set by pressing this button when the unit is at On or Off status After powered on 27 CONTROL the default is Light On TURBO In Cool or Heat mode pressing this button can activate or deactivate this function When this function is on its symbol will be displayed Any change of either mode or fan speed will make this function canceled automatically 4 BLOW BIOW On and BLOW Off can be set by pressing this button In Cool and Dehumidifying modes press this button to activate this function and then BLOW will be displayed After that it can be canceled by repressing this button After powered on the default is Blow Off If the ON OFF button is operated or the unit is switched to the Cool or Dehumidifying mode it will keep its original status When the unit is turned off Only Blow Off is available Under Auto Fan or Heat mode this function is unavailable The preset temperature can be decreased by pressing this button If the button is pressed down for more than 2 seco
43. k low voltage DC link high voltage PH Flash 3 Flash 3 Flash 3 oE oE protection protection times times times Abnormal AC input voltage PP Mesh 3 Mest 3 Plash 3 oE oE times times times Flash 3 Flash 3 Flash 3 Capacitor charging error Capacitor charging error PU nes times times oE oE Jumper terminal Jumper terminal c5 Flash 3 Flash 3 Flash 3 oE oE error protection error protection times times times Defrosting or oil Defrosting or oil HI Flash Hi n returning in heating returning in heating once displayed Forcible defrosting HI Quick HI Hl flash Compressor thermal Compressor overload Flash 3 Flash3 Flash 3 3 H3 oE oE overload protection protection times times times Mod lecutrent protection IPM Module current Flash 3 Flash 3 Flash 3 namely rotection H5 times times times ok oE IPM protection p d Sonne at Compressor desynchronizing H7 Flash 3 PIASR Fl sh gt oE oE esynchronizing times times times PFC Protection PFC Protection HC Beh 3 Bash 3 Plash 3 oE oE times times times Too high power protection Too high power protection Flash 20 available for the available for the L9 ncs oE oE residential outdoor unit residential outdoor unit Compressor startup failure Compressor startup failure Lc Fish 3 Flash 3 sh 3 oE oE times times times Compressor phase failure Compressor phase failure Ld Flash 3 Flash 3 Flash 3 oE oE reverse protection reverse protection times times times Compressor rotation Compressor rotation
44. lled personnel Enter cancel A Fan Mode O 0 0 0 O 0 O Function v Timer On Off Error Error Code High pressure protection El Low pressure protection E3 Discharge protection E4 Over current protection PS Communication error E6 Indoor water overflow protection E9 Mode conflict E7 Anti freezing protection E2 Defrosting or oil returning for heating HI Indoor ambient temperature sensor open short circuit FI Evaporator temperature sensor open short circuit F2 Indoor unit liquid valve refrigerant pipe inlet temperature sensor error b5 Indoor unit gas valve refrigerant pipe outlet temperature sensor error b7 Condenser coil inlet temperature sensor open short circuit AS Condenser coil midway temperature sensor error F4 Condenser coil outlet temperature senor open short circuit AT Discharge air temperature sensor error FS Outdoor ambient temperature sensor error F3 Module temperature sensor error oE Outdoor unit overall error oE 26 CONTROL 3 2 Wireless Remote Controller Wireless Remote Controller YT1F Notes a Be sure that there are no obstructions between the receiver and the remote controller b Do not drop or throw the remote controller c Do not let any liquid into the remote controller and expose the remote controller to direct sunlight or any place where is very hot d This 1s a general use remote controller If press some button which i
45. min and the compressor overload switch is reset the unit will resume operation status automatically If the protection appears for more than 6 times if the running time of the compressor is longer than 30min the protection times record will be cleared the unit can not resume operation status automatically but can resume running only after cutting off the power and then putting through the power 2 2 8 Drive Error When the system is powered on and starts to run for the first time let all indoor units on line run under the Fan mode and they will go to the piping test through the preset mode after they has run at the high fan speed for six minutes 2 2 9 Refrigerant Recovery The refrigerant can be recovered from either the indoor unit or the outdoor unit From the outdoor unit it is available to recover the refrigerant from the outdoor unit by pressing SW3 for a long time period From the indoor unit when the unit is powered on and runs under the COOL mode it is available within five minute to go the refrigerant recovery mode by pressing three times the LIGHT button on the wireless controller in three seconds with FO displayed How to quit the refrigerant recovery When the refrigerant recovery has started it will quit when the SW3 is pressed down for a long time period or there is a signal from the wireless controller or it has run for ten minutes 2 2 10 Forcible Defrosting How to activate this function
46. nding temperature with the last Sleep curve setting is displayed where the ambient preset temperature once is displayed Repeat step 2 and step 3 till 8 HOUR Sleep setting is finished Press Enter cancel to confirm the setting Notes a During the above setting if Function is pressed down or there is not any operation within 5s sleep curve setting will be canceled b 26 C is the default Sleep curve temperature before delivery The wired controller will automatically memorize the Sleep curve after the setting Turbo Setting Turbo function The unit at the high fan speed can realize quick cooling or heating so that the room temperature can quickly approach the setting value In the Cooling or Heating mode press Function till the unit enters the Turbo setting interface and then press Enter Cancel to confirm the setting When the Turbo function is activated press Function to enter the Turbo setting interface and then press Enter Cancel to cancel this function Notes a When the Turbo function is activated if the difference between the room temperature and set temperature is at or below 2 C detected in successive 1 min the Turbo function will be automatically deactivated b Turbo function is unavailable in the Dry and Fan mode And the Turbo function is off after power failure and then power recovery If Quiet function is on Turbo function will be canceled subsequently Save Setting Save Energy saving which will result t
47. ndoor side state Outdoor side stae Dry bulb temp C Wet bulb temp C Dry bulb temp C Wet bulb temp C Rated Cooling 27 19 35 24 Max cooling 32 23 48 26 Min cooling 21 15 18 Rated Heating 20 15 7 6 Max heating 21 24 18 Min heating 20 15 15 16 Notes a The heating cooling capacity and noise listed below are all measured before the shipment b All parameters listed below are measured under the standard working conditions If there is any change the parameters marked on the nameplate always prevail c The heating capacity of the indoor unit just involves that of the heat pump but apart from that of the auxiliary electric heater PRODUCT 5 PIPING DIAGRAM Schematic Diagram of Multisplit Inverter Heat Pump en Heat Exchanger Liquid Receiver C Four way Valve H Capillary Oil Separator Outdoor Unit n 1 v PC Stop Valve T Compressor 4E dl ib ll Gas Liquid Separator Electronic Expansion Valveddp Y GH CP CP Heating Indoor Unit Cooling F gt Heat Exchanger C D 5 gt Heat Exdhahger 3 Heat Exchanger s 2 x gt Heat Exdhanger 5 Heat Exchanger Schematic Diagram o
48. nds the temperature will be decreased quickly until it is released with C F displayed al the time Under Auto mode the temperature adjustment is unavailable ot The preset temperature can be increased by pressing this button If the button is pressed down for more than 2 seconds the temperature will be increased quickly until it is released with C F displayed all the time Under Auto mode the temperature adjustment is unavailable The setting range is 16 30 CC or 61 86 F TEMP It can be decided by pressing this button which temperature will be displayed indoor set temperature or indoor ambient temperature When the indoor unit is powered on the indoor set temperature will be displayed while if the status is changed to the indoor ambient temperature will be displayed However the indoor set temperature will be displayed again when the controller receives other remote controls signals Without setting this function the default is the indoor set temperature SWING UP DOWN SD The swing angle which circularly changes as below can be selected by pressing this button NH OFF e 3 A This kind of remoter controller is universal And the three swing statuses of 1 21 hare the same as that of Sp If the swing function is deactivated when the air guide louver is swing up and down it will stop at the current position Sl indicates that the air guide louver swings up and down among all five positions AIR
49. ntenance N Check if there is filth blockage to indoor u outdoor filter or heat exchange fin gt ER N System pipeline is blocked gt Mainly check the inlet and outlet of main pipe connecting with each indoor unit and capillary of indoor and outdoor units Replace the parts like filter capillary and so on 61 MAINTENANCE Malfunction display E4 Compressor Exhaust High Temperature Protection Discharge temperature protection Measure if compressor s discharge temperature has reached 15 Measure if temperature sensor s resistance value is correct System pipeline leaks so compkmentation is Replace the outdoor needed Please add refrigerant according to the unit mainboard amount specified in the nameplate Malfunction display ES Compressor Overheat f Abnormal overcurrent N gt Check if compressor s connection line Adjust compressor s is properly connected connection line N Check if current value is higher than the protector s setting Replace overcurrent protector If unit s high pressure is normal Refer to high pressure protection If voltage is normal Contact the power supply company R eplace mainboard 62 Replace relevant discharge temperatu
50. rature setting range is 16 30 C 2 2 Protection Function 2 2 1 Mode Conflict Protection of indoor unit When the setting mode is different of different indoor unit the unit runs in below status a The mode of the first operating indoor unit is the basic mode then compare the mode of the other indoor units to see if there is a conflict Cooling mode dry mode is in conflict with heating mode b Fan mode is in conflict with heating mode and the heating mode is the basic mode No matter which indoor unit operates first the unit will run in heating mode 2 2 2 Overload Protection Function When the tube temperature is a little low the compressor raises the operation frequency when the tube temperature is a little high the compressor frequency is restricted or lows down the operation frequency when the tube temperature is too high the compressor protection stops running If the discharge temperature protection continuously appears for 6 times the compressor can t resume running The compressor can resume running after cutting off the power and then putting through the power if the running time of the compressor is longer than 7min the protection times record will be cleared 2 2 3 Discharge Protection Function When the discharge temperature is a little low the compressor raises the operation frequency when the discharge temperature is a little high the compressor frequency is restricted or lows down the operation frequency when
51. re sensor MAINTENANCE Malfunction display E9 Full Water Protection Full Water Protection N Replace the main board of the indo uint Check if the voltage of liquid level switch end is ok Check if water overflow Y Check the liquid level switch heck if the water drainage pump works Check if the voltage of water drainage pump end is ok Replace the main board of the indoa uint Y Check the cables of water drainge pump Check if the water drainage pipe is jammed or if water flows smoothly Adjust the water drainage pipe Clear the water drainage pipe Malfunction display F2 Failure of Evaporator Temp Sensor Failure of condenser Temp sensor Check the direction of the plug and socket Check if the plug of the temperature sensor is correctly connected with socket on the mainboard Remove the sensor to check if the resistance Replace temperature sensor value is ok p p Replace mainboard of the indoor uint 63 MAINTENANCE Malfunction display F3 Failure of Outdoor Ambient Sensor Failure of outdoor Ambient sensor Check if the plug of the temperature sensor is correctly connected with socket on the mainboard Ch
52. s not available for the corresponding function the unit will keep the original running status 3 2 1 Function of Press Buttons 4 ON OFF d Press this button to turn on off the unit After that the sleep function will be canceled but the preset time is still remained MODE Auto Cool Dry Fan Heat modes can be selected circularly by pressing this button Auto mode is the default after power on Under Auto mode the temperature will not be displayed Under Heat mode the initial value is 28 C 82 F Under other modes the initial value is 25 C 77 F Dy 3E os BP PSU Auto Cool e Dry sa Fan XX Heat Only for the cooling and heating unit SLEEP Sleep On and Sleep Off can be selected by pressing this button After powered on the default is Sleep Off After the unit is turned off the Sleep function is canceled When the sleep function is set already the symbol will be displayed And at this time the time of timer can be adjusted Under Fan and Auto modes this unction is not available FAN Auto Low Middle or High fan speed can circularly selected by pressing this button After powered on the default is Auto speed Under Dehumidifying mode only Low fan speed is available Auto at ei al adi Saale wai Mid adi Hich 4 CLOCK The clock can be set up by pressing this button with the symbol displayed and blinking In such a case pressing or within 5 seconds can adjust t
53. s this signal it will soon send it to the outdoor unit In contract if H1 is displayed the unit will go the setting status of the Defrosting Mode 2 and the indoor unit also will send this signal to the outdoor unit as soon as it receives It On condition that the unit is off it is available to switch over the Defrosting Mode 1 and Defrosting Mode 2 by pressing the MODE and BLOW buttons simultaneously 20 CONTROL k Turbo As soon as the controller receives the Turbo instruction the fan of the indoor unit will run at the extreme high speed and the fan of the outdoor unit will run at high cooling heating frequency L Blow Blow Function It is a function to automatically blow off the moist inside the exchanger of the indoor unit to prevent mould growing after the unit is shut off a On condition that this function is activated when the On Off press button is operated the fan of the indoor unit will still run for ten minutes with the symbol BLOW displayed At this time the fan will stop as this function is deactivated b This function is unavailable under the AUTO FAN and HEAT modes 21 CONTROL 3 REMOTE CONTROLLER 3 1 Wired Remote Controller 3 1 1 Wired Controller XK19 It is optional for the cassette type wall mounted and floor ceiling indoor units Outside View of the Wired Controller Enter cancel A Fan O O O Function v Timer On Off
54. speed Under the COOL mode If the ambient temperature is equal to or lower than the set temperature the fan will run at the low speed If the ambient temperature is between the set temperature and the set temperature minus 3 C the fan will run at the medium speed If the ambient temperature is higher than the set temperature plus 3 C the fan will run at the high speed Under the FAN mode The fan will run at the medium speed constantly Once the fan starts its speed can not be changed unit it has run for at least 30 seconds at the currently set speed c AUTO Press Button The whole unit will run under the AUTO mode by pressing this button when the unit is off In this condition the fan of the indoor unit will run at the auto speed with the swing function activated When the unit is on it will be turned off by pressing this button This button is unavailable to the floor ceiling unit d Sleep a Under this mode the proper sleep curve will be adopted in accordance with different set temperatures b Sleep 1 Under the COOL mode or the DRY mode the temperature will go up by 1 C after one hour and by another 1 C after another hour after that the temperature will be kept on Under the HEAT mode the temperature will go down by 1 C after one hour and by another 1 C after another hour after that the temperature will be kept on c Sleep 2 Sleep Curve under the COOL mode 3l arr ge 30 29 28 27 26 25 24 23 22
55. ss Loop 76510021 1 25 Filter 2 07216221 1 26 Sensor 3900020723 1 27 Evaporator Assy 01029482 1 28 Press Plate of Water Lead flume 26909442 1 29 Connection Board 01344115 1 30 Water Tray Assy 01289404 1 31 Front Grill sub assy 01579403 1 32 Top Cover Board Sub assy 01269409 1 33 Support 2 01809418 1 34 Left Side Plate Sub Assy 0131942801 1 35 Rotating Shaft 26909412 1 36 Rotating Shaft 26909413 1 37 Step Motor 1521240206 1 38 Electric Box Assy 01399517 1 39 Left Cover Plate 26909443 1 40 Installation Supporting Frame 01809401 1 41 Display Board 30296317 1 42 Remote Controller 305100492 1 43 Display Board 30294220 1 44 Terminal Board 42010178 1 45 Capacitor CBB61 33010089 1 46 Electric Box Cover 01429420 1 47 Transformer 4311023701 1 48 Main Board 30226350 1 49 Electric Box 01429419 1 50 Room Sensor 39000191 1 98 MAINTENANCE MUL12 CFTA C Ik ERAS de 99 MAINTENANCE MULI2 CFTA NO Description Code Qty 1 Fixed Mount 26909426R 1 2 Louver Clamp 26112127 2 3 Guide Louver 10619403 1 4 Rotating Shaft 26909430 4 5 Front Connecting Plate 01349414P 1 6 Base Frame 26909448 1 7 Air Lead Plate sub assy 02229418 1 8 Supporter 01805288 1 9 Mid clapboard sub assy 01249416 1 10 Front volute casing 26905205 4 11 Rear side plate assy 01319
56. te setting interface with Quiet or Auto blinking In this case press Aor V to switch between Quiet and Auto and then press Enter cancel to make a confirmation When the Quiet function is activated press Function till the unit enters the Quite setting interface with Quite or Auto blinking Then press Enter cancel to cancel this function Notes a When the Quite function is activated the fan speed is low and un adjustable b When the Auto Quite function is activated the unit will run according to the difference between the room temperature and the setting temperature In this case the fan speed is adjustable Difference between the room temperature and the setting temperature the fan speed will keep its current state if the temperature difference gt 4 C the fan speed will reduce one grade if 2 C lt the temperature difference lt 3 C the fan speed will be at min grade if the temperature difference lt IC c When the Auto Quiet function is on the fan speed can not be raised but reduced If the high fan speed is manually adjusted the function will quit automatically d There is not Auto Quiet function in the Fan or Dry mode Quiet off is default after power failure and then power recovery 4 Other Functions 1 Lock Upon startup of the unit without malfunction or under the Off state of the unit press A and V at the same time for 5s till the wired controller enters the Lock function In this case
57. the discharge temperature is too high the compressor protection stops running If the discharge temperature protection continuously appears for 6 times the compressor can t resume running The compressor can resume running after cutting off the power and then putting through the power if the running time of the compressor is longer than 7min the protection times record will be cleared 2 2 4 Communication malfunction Detection of the quantity of installed indoor units After 3min of energizing if the outdoor unit does not receive the communication data of certain indoor unit the outdoor unit will judge that indoor unit is not installed and will treat it as it is not installed If the outdoor unit receives the communication data of that indoor unit later the outdoor unit will treat that unit as it is installed 2 2 5 Compressor high pressure protection a When the high pressure switch is detected cut off for 3s continuously the compressor will enter high pressure protection as it stops when reaching set temperature Meanwhile the outdoor unit will send the signal of high pressure protection to the indoor units b After the appearance of high pressure protection when the high pressure switch is detected closed for 6s continuously twice an hour the compressor can resume running only after cutting off the power and then putting through the power 2 2 6 Compressor low pressure protection a Low Pressure Protection for Shutdown
58. the gas Shown as Flash 22 of the gas valve b7 b7 valve temperature sensor Table 16 times temperature sensor Refrigerant insufficiency Refrigerant insufficiency or blockage protection or blockage protection FO Flash 10 E E available for the available for the times gt 2 residential outdoor unit residential outdoor unit Short open circuit of Short open circuit of the indoor ambient the indoor ambient Shown d Flach Fl Fl Table 16 once temperature sensor temperature sensor Short open circuit of Short open circuit of Shown as Flash F2 F2 the indoor evaporator the indoor evaporator Table 16 twice Short open circuit of the Short open circuit of the Flash 3 of the outdoor ambient of the outdoor ambient F3 times F3 F3 temperature sensor temperature sensor Pharbopen cirouitot Short open circuit of the the temperature sengor temperature sensor at the Flash 4 at the midway of the temp F4 F4 F4 midway of the condenser coil times condenser coil for for the commercial unit the commercial unit Short open circuit of Short open circuit of Flash 5 the outdoor discharge the outdoor discharge FS F5 FS times temperature sensor temperature sensor Oil returning in cooling Oil returning in cooling F7 System high pressure System high pressure El Flash El El protection protection once Anti freezing protection Anti freezing protection E2 UM E2 E2 System low pressure System low pressure E3 Flash 3
59. ting Operation q Heating Operation D There Is Not Guide Louver Guide Louvers Swing A n The Operation Yes Of Defrosting No y n The Process O Yes Preventing Restart Operation 3 Minutes Temperature Adjustment In The Process Of Preventing Cold Air Y Fan Motor Fan Motor Stop gt N y y Fan Motor Stop Fan Motor Stop Y y Electronic Electronic Expansion Valve lose Expansion Valve Defrosting Control As Per Set Air Supply Speed h Electronic Expansion Valve Capacity Control 14 CONTROL 2 MAIN LOGIC 2 1 Control Function of Outdoor Unit 2 1 1 Cooling Mode a Cooling conditions and process If the compressor is in stop status and start the unit for cooling operation when one of the indoor units reaches the cooling operation condition the unit start cooling operation in this case the electronic expansion valve the outdoor fan and the compressor start operation b Stop in cooling operation a Compressor stops The compressor stops gradually the outdoor fan stops after 1 min b Some of the indoor units reach the stop condition the compressor does not stop The compressor operates according to the required frequency For the indoor unit with no requirement the corresponding electronic expansion valve is
60. uit this state 3 1 3 Operation Instructions On Off Press On Off to turn on the unit and turn it off by another press Mode Setting Under the On state of the unit press Mode to switch the operation modes as the following sequence Cooling Dry Fan Heating Auto s Cooling Lo Dry Fan Heating Temperature Setting Press Aor V to increase decrease the preset temperature If press either of them continuously the temperature will be increased or decreased by 1 C every 0 5s In the Cooling Dry or Heating mode the temperature setting range is 16 C 30 C In the Fan mode the setting temperature is fixed at 26 C In the Auto mode the setting temperature is unadjustable Fan Setting Under the On Off state of the unit press Fan and then fan speed of the indoor unit will change circularly Timer Setting Under the On Off state of the unit press Timer to set timer off on Timer on setting press Timer and then LCD will display xx x hour with hour blinking In this case press Aor V to adjust the timing value Then press Enter cancel to confirm the setting Timer off setting press Timer if LCD won t display xx x hour and then it means the timer setting is canceled Timer range 0 5 24hr Every press of Aor V will make the set time increased or decreased by 0 5hr If either of 23 CONTROL them is pressed continuously the set
61. y 1 C after the unit runs under Sleep 1 for Ihr and 1 C after another Ihr After that the unit will run at this temperature 1 Sleep 2 In the Cooling mode the temperature may be set between 16 C 23 C 24 C 27 C or 28 C 29 C or at 30 C Note The curve is only for reference the actual temperature is subject to the time point For example The temperature in the Cooling mode is set at 25 C Under the mode of Sleep 2 the temperature will increase by 1 C every Ihr After it increases by 2 C in total it will keep at 27 C 7 hours later it will decrease byl C i e 26 C After that the unit will keep running at 26 C In the Heating mode the temperature may be set at 16 C or between 17 C 20 C 21 C 27 C or 28 C 30 C For example the temperature in the Heating mode is set at 22 C Under the mode of Sleep2 the temperature will decrease by 1 C every Ihr After it decreases by 2 C in total i e 20 C the unit will keep running at 20 C 1 Sleep 3 Sleep curve setting under Sleep 3 DIY mode Under the mode of Sleep 3 press Timer to enter the Sleep setting In this case 1 HOUR is displayed where the timing value once is displayed and the corresponding temperature with the last Sleep curve setting is displayed where the ambient preset temperature once in displayed Press Aor V to change the corresponding temperature setting Press Timer time will automatically increase by Ihr and the correspo

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