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New Energy Requirement SUPER DC INVERTER SERIES

1. Lu WIRING DIAGRAM INDOOR UNIT 1 202042790252 EI MODE OFF FAN Factory Settin V eon m CN15 N23 ON OFF CN10 16 31 p MAIN CONTROL BOARD 542 5 4 2 t di CN7 i 8 cud WHITE Factory Setting gt XP7 57 5 swi ON MODE REWEWBER NO REMEMEER wo suas MAIN MAIN SLAVE CCM OUTDOOR COMM BUS COMM BUS NOTE PLEASE USE SHIELDED WIRE 14 Indoor Units LFIS B 1211 Electric Characteristics 5 Electric Characteristics Power Model Indoor Unit Supply Voltage KCD 18HRFN1 QRC4 220 240 KCD 24HRFN1 QRC4 220 240 KCD 24HRFN1 QRC8 220 240 KCD 36HRFN1 QRC4 220 240 Notes MFA Max Fuse Amps A Indoor Units Sound Levels LFIS B 1211 6 Sound Levels Om Microphone KCD 18HRFN1 QRC4 L ett KCD 24HRENI QRC4 55 48 4 4 __ KCD 24HRFNI QROB 64 8 4 1 49 KCD 36HRFN1 QRC4 16 Indoor Units LFIS B 1211 Accessories 7 Accessories INSTALLATION FITTINGS Installation paper board Tubing amp Fittings Soundproof insulation sheath Out le
2. MN KOU 18HFN1 QRC4 845 560 335 360 313 324 700 KOU 24HFN1 QRC4 895 590 333 355 302 313 862 KOU 24HFN1 QRC8 895 590 333 355 302 313 862 KOU 36HFN1 QRC4 990 624 366 396 340 354 966 KOU 36HFN1 RRCA 990 624 366 396 340 354 966 42 Part 3 LFIS B 1211 2 Service Space Wall or obstacle More than 30cm Maintain channel Air inlet N More than 30cm Airinlet More than soom Air outlet More than 200cm Part 3 Service Space More than 60cm 43 Piping Diagrams 3 Piping Diagrams KOU 18HFN1 QRC8 KOU 24HFN1 QRC4 KOU 24HFN1 QRC8 LFIS B 1211
3. INDOOR OUTDOOR Electronic LIQUID SIDE CAPILIARY TUBE expansion valve 00000 2 WAY VALVE Y Condenser temp sensor HEAT EXCHANGE EVAPORATOR 1 14 Ambient sensor temp sensor 2 Evaporator temp sensor ED T GAS SIDE V v Dld 4 WAY VALVE gt 3 WAY VALVE Accumulator High pressure switch gt Discharge ow pressure 8 temp sensor switch Compressor 4 HEATING KOU 36HFN1 QRC4 KOU 36HFN1 RRC4 INDOOR OUTDOOR Electronic LIQUID SIDE CAPILIARY TUBE expansion valve 000007 2 WAY VALVE v T3 Condenser temp sensor HEAT EXCHANGE EVAPORATOR 1 sensor temp sensor 2 temp sensor gt v GAS SIDE 4 4 Dld 4 WAY VALVE 3 WAY VALVE Accumulator 1 High pressure switch Compressor T5 Discharge temp sensor Oil separator Low pressure SOOLINE switch Oil return Capillary HEATING 44 Part 3 LFIS B 1211 4 Wiring Diagrams KOU 18HFN1 QRC4 KOU 24HFN1 QRC4 KOU 24HFN1 QRC4 Wiring Diagrams OUTDOOR AMBIENT 14 TEMPERATURE SENSOR T3 CONDENSER TEMPERATURE SENSOR DISCHARGE SENSOR 5 00 FAN CN37 CN39 CN38 ELECTRONIC EXPANSIVE VALVE 2 2 222
4. 32 Indoor Units LFIS B 1211 Indoor Units Duct Type Ceiling amp Floor oct DIMENSIONS isanne 35 SPACE nnen 36 Wiring Diagrams 37 Electric Characteristics 38 EeVels E 38 PAC COS SOMES ctr nmt 39 The Specification of Power 39 Mud 40 33 Duct LFIS B 1211 1 Features 1 1 New design more modern and elegant appearance 1 2 1 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 1 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 1 4 Three level fan speed more humanism design meets different air supply requirement 1 5 New foam drain pan with plastic spraying inner surface
5. z a 1 0 le s D 1 AN v Size of outline Capacity Outline dimension mm Air outlet opening size Air return opening size dimension mounted plug HJ L M 18 24 920 270 635 570 65 713 35 179 815 260 20 960 350 24 Indoor Units LFIS B 1211 Duct Type 3 Service Space Ensure enough space required for installation and maintenance 200mm or more 300mm or more Cue 4 lt 5 65 Ase EET bon See 5 E 600mmX600mm checking orifice All the indoor units reserve the hole to joint the fresh air pipe The hole size as following Duct joint for new air duct Indoor Units 25 Duct 4 Wiring Diagrams KTB 18HWFN1 QRC4 KTB 24HWDN1 QRC4 KTB 36HWFN1 QRC4 r M M R
6. Replace IPM board and then check whether the system can run normally Yes NO Replace outdoor main board rouble is 104 Electrical Control System LFIS B 1211 Troubleshooting 2 4 4 9 E6 malfunction Only for 36K 48K with 1 phase E6 display module protection Check whether the connecting line between main board and the PFG module is connected tightly Connect it tightly check normal or not Yes No v Check whether the voltage range of P N on IPM Yes Replace the outdoor main board module is normal DC277 Yes 410V No Check whether the inductance of PFC module is good If the inductance is Replace the inductance good the resistance of the two ports is 0 Yes Replace the module 4 Trouble is solved B Electrical Control System 105 Troubleshooting LFIS B 1211 2 4 4 10 PO malfunction PO display Temperature protection of compressor top v Whether compressor Whether the connection is operates No good No Reconnect and retest Yes Yes v Whether refrigerant circulation volume is normal Whether protector is normal protector is normal resistance 0 Replace the p
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8. 18 101517 22 11500 62 219073 0 59386 17 96343 109731 63 21124 103 057683 6 895865 24 104736 64 203732 104 0 56088 __ 15 842190 25 10000 6 1 96532 105 054448 14 793110 26 955074 6 189627 106 052002 __ 13 745360 27 912445 67 183003 107 05 6 __ 2 7 ze 68 17647 049989 1 66098 29 833566 69 17047 109 048600 10 622756 30 797078 70 16469 047256 seme s n 150686 m 04657 8 56364 32 729464 72 153668 112 044699 22438 7s 49316 34 668355 74 143498 14 042304 465725 35 640021 75 13870 115 041164 440000 36 613059 76 134105 040000 3 415078 37 587359 7 129078 117 0389931 398239 38 562961 78 125423 037956 371988 39 539689 79 121330 036954 352004 40 54749 120 33 3269 41 496392 81 1 13600 121 035042 2 31563 42 476253 82 109958 122 034133 3 457060 es 10448 032246 _ 4 2849 44 438736 84 1 0300 124 05290 26878 45 421263 85 099815 125 031559 25404 40455 86 09661 125 0375 241932 47 388673 87 093662
9. 33 6 Indoor Units LFIS B 1211 Indoor Units Super Slim Cassette Type Super Slim Cassette Type wesende T I et 8 12 13 WIRING DIAGrAMS m 14 Electric Characteristics 15 LEVelS pier 16 ACCESSONIe TE D D DD D 17 The Specification of Power 18 Mbit 19 Features 1 Features 1 1 Overview gt Compact design super slim body size less space requiring in installation gt Eachlouver can be separately controlled more comfort air blowing is possible gt Auto lifting panel design more convenient to clean and maintain the filter optional LFIS B 1211 Old Cassette New slim cassette Volume change 18K 24K 840 230 840 18K 24K 840 203 840 13 3 30K 840 300 840 30K 840 203 840 47 7 36 48 840 300 840 36K 48K 840 245 840 22 49 1 2 Fresh air intake function gt Fresh air fulfills air quality more healthy and comfortable gt Ventilation motor is optional to increase the effect of fresh air 8 Indoor Units LFIS B 1211 Features C New air intake 1 3 Optional generator gt
10. 5 MT YELLOW SS Applicable to the units ve Jewe TO INDOOR COMM BUS adopting AC motor only POWER SUPPLY NOTE PLEASE USE 3 CORE SHIELDED WIRE 6 Pag LFIS B 1211 Electric Characteristics 5 Electric Characteristics Outdoor Unit Model KOU 18HFN1 QRC4 220 240V 198V 254V KOU 24HFN1 QRC4 220 240V 198V 254V KOU 24HFN1 QRC8 220 240V 198V 254V KOU 36HFN1 QRC4 220 240V 198V 254V KOU 36HFN1 RRC4 380 415V 342V 440V Part 3 47 Operation Limits LFIS B 1211 6 Operation Limits M Cooling operation senen Outdoor temperature 15 50 15 24 1 If the air conditioner is used beyond the above conditions certain safety protection features come CAUTION into operation and cause the unit to operate abnormally 2 The room relative humidity should be less than 80 If the air conditioner operates beyond this figure the surface of the air conditioner may attract condensation Please set the vertical air flow louver to its maximum angle vertically to the floor and set HIGH fan mode 3 The optimum performance will be achieved during this operating temperature zone 48 Part 3 LFIS B 1211 Sound Levels 7 Sound Levels Outdoor Unit Microphone 1 0m Note H 0 5 x height of outdoor unit
11. 780 Hook location Unit mm 840 Body 950 3 1 3 Install the pendant Select the position of installation hooks according to the hook holes positions showed in upper picture Installation 53 Indoor unit installation LFIS B 1211 Drill four holes of 12mm 45 50mm deep at the selected positions on the ceiling Then embed the expansible hooks fittings 3 1 4 Install the main body Make the 4 suspender through the 4 hanger of the main body to suspend it Adjust the hexangular nuts on the four installation hooks evenly to ensure the balance of the body Use a leveling instrument to make sure the levelness of the main body is within 2 17 Adjust the position to ensure the gaps between the body and the four sides of ceiling are even The body s lower part should sink into the ceiling for 10 12 mm In general L is half of the screw length of the installation hook Locate the air conditioner firmly by wrenching the nuts after having adjusted the body s position well Ceiling 54 Installation LFIS B 1211 Indoor unit installation 3 1 5 Install the panel Remove the grille Hang the panel to the hooks on the mainbody If the panel is with auto lift grille please watch the ropes lifing the grille DO NOT make the ropes enwinded or blocked Hook panel ES lt A Water receiver ORR E 22
12. s i 2 65 IO IO IO OINI 5 5 0 AJOJN NO CO IN INI NIN IN Od OD WIN o N AAN O1 O1 O71 O71 OJAI OF O17 I A A I gt N 5 LFIS B 1211 Controller 3 Controller 3 1Wireless Remote Controller 3 1 1RG51Q1 BGE SET TEMPERATURE v ADJUST SPEED SWING SWING peser TIMER OFF DIRECTION General Function for wireless remote controller Rated voltage 3 0V 2pieces of LRO3 7 batteries Operation condition 5 60 Electrical Control System 117 Controller LFIS B 1211 Buttons and functions 1 Adjust Decrease the s t temp Keeping pressing will decrease the temp with 1 C 0 58 2 Adjust Increase the set temp Keeping pressing will increase the temp with 1 C per 0 55 3 MODE Once pressing running mode will be selected in the following sequence se NOTE No heating mode for cool only type unit 4 VERT SWING Used to stop or start horizontal louver movement or se
13. LL 1mm mmi ILI mum ILI m IL TI LI LS I LJ LA LI LJ LJ ae am L 60 Installation LFIS B 1211 Indoor unit installation 3 3 3 Install the pendant bolt Ceiling installation select the position of installation hooks according to the hook holes positions showed in upper picture Drill four holes of 12mm 45 50mm deep at the selected positions on the ceiling Then embed the expansible hooks fittings 2 Wall mounted installation Install the tapping screws onto the wall Refer to picture below an IL IL Lu iL mm ed IL LL LI mm TI LI iL T LI LL mm IL LI LI L Li LU LL 3 3 4 Install the main body D Ceiling installation The only installation method for the unit with drain pump Remove the side board and the grille Hanging arm Hanging screw bolt Grille Locate the hanging arm on the hanging screw bolt Prepare the mounting bolts on the unit Installation 61 Indoor unit installation LFIS B 1211 Screw nut 20 25 Hanging screw bolt Put the side panels and grilles back D Connecting point of refrigerant pipe D gas side Connectin
14. 1 8 Twins Combination gt units can be installed as Twin systems one outdoor unit can connect with two indoor units indoor units can be combined in any of the different available ratings Indoor Units 11 Dimensions LFIS B 1211 2 Dimensions Tubing side Drain side 680 Hook location 780 Hook location 840 Body 90 Panel Unit mm Connecting point of refrigerant pipe Connecting point of drain pipe Liquid side Connecting point of refrigerant pipe em Gas side Celing WK Pane Outlet Inlet Outlet 880mm Ceiling hole Ground gt 2500mm Indoor Units LFIS B 1211 Service Space 3 Service Space gt 100 0mm v gt 1000mm 1O00mm Indoor Units 13 Wiring Diagrams LFIS B 1211 4 Wiring Diagrams KCD 18HRFNi QRC4 KCD 24HRFNi QRC4 KCD 24HRFN1 QRC8 KCD 36HRFN1 QRC4
15. Part 3 49 Installation 50 LFIS B 1211 Part 4 Installation 1 Installation Procedure 51 2 Location SCICCUON pee 52 Indoor unit installation 53 4 Outdoor unit installation Side Discharge Unit 63 5 Refrigerant pipe installation 65 6 Drainage pipe installation 68 7 Vacuum Drying and Leakage Checking 72 8 Additional refrigerant charge 73 9 Engineering of insulation 74 10 Engineering of electrical wiring 76 TT Test operation idest eaten otv uaa cun crac Exe 77 Installation LFIS B 1211 Installation Procedure 1 Installation Procedure Indoor unit installation Outdoor unit installation location selection location selection Indoor unit installation Outdoor unit installation Refrigerant pipe Refrigerant pipe installation and insulation installation and insulation Drainage pipe installation Drainage pipe installation and insulation and insulation Vacuum drying and leakage checking Additional refrigerant charge Insulation the joint part of refrigerant pipe Wiring connection and electric safety checking Test ope
16. a gt i eenn 4 i T 215 5 XU i cs i TH f T x ETE NEN 8 Ir nu E TETE ILI IH 9 cum E Outer Driver 5 i Tooutdoor Remote Alarm En 2 i Earth DC Motor CommBus Control Output Te GEM E i miii katana 4 ____ Comm Bus Comm Bus 3j To Power For Setting NETaddress For Setting POWER p r ON gor ON r0 07 p r 01 gor gor gor p r gor glo et ok af 07 ge zie ere ge 47 07 ses2 RD a ENC1 5 02 SNE 41 4 2 e 12 12 12 Fagl 12 bear bear bag ag bear Code 0 00 0 01 10 0 11 Code 4 5 7 8 9 A B NETaddress 0 15 16 31 32 47 48 63 POWER 53 71 90 105 140 160 175 Factory Setting Serine According to related model i For Setting statie pressure For temp compensation gor Gr gor 07 r 1 v e e 2 gt ON OM ON ad M an ENG 5 2 se swi Uf SW6 l ea 881 ee 12 12 12 1 12 12 12 12 12 sw2 Cod 2 0 1 2 3 4 Coda 00 01 10 11 TYPE Code 00 01 10 11 high s
17. 2 202075390587 En J 2 182 af N12 14 CompTop LON HIGH 5 IPM BOARD T MAIN BOARD 5 6 SWAY HEATI HEAT 2 CNI CNB 1 REACTOR er RD Ao V 5 Fl 5 COMPRESSOR POWER OPTIONAL E BUND TO INDOOR COMM BUS NOTE PLEASE USE 3 CORE SHIELDED WIRE OME us wo BUE RED qi EAE pesi TO INDOOR COMM BUS MAIN BOARD BLUT Part 3 WOTE PLEASE USE i CORE SHIELDED WIRE BES 202075590585 CODE PART NAME COMPRESSOR AC CURRENT DETECTOR ELECTRIC EXPANSIVE Ev FAN OUTDOOR FAN MOTOR HEATER CRANKCASE HEATING HIGH PRESSURE SWITCH PFC INDUCTOR LOW PRESSURE SWITCH 4 WAY VALVE CONDENSER TEMPERATURE SENSOR OUTDOOR AMBIENT TEMPERATURE SENSOR EXHAUST TEMPERATURE SENSOR TP FILTER RECTIFILER POWER FILTER POWER RECTIFIER 45 Wiring Diagrams LFIS B 1211 KOU 36HFN1 RRC4 202075590687 WIRING DIAGRAM OUTDOOR UNIT Applicable to the units adopting DC motor only COMPRESSOR AC CURRENT DETECTOR 3 PHASE RECTIFIER 1 PHASE RECTIFIER ELECTRIC EXPANSIVE VALVE PTC1 PTC2 CONDENSER TEMPERATURE SENSOR OUTDOOR AMBIENT TEMPERATURE SENSOR FERRITE BEAD 4 WAY TERMINAL 3 WAY TERMINAL gn
18. generator is optional to get refreshing air to your room lonizer generator Ventilation motor connector connector gt lonizer be switched on or ott by remote controller When pressing the Clean Air button on the remote controller lonizer will work and the indicator light on display board will shine Indoor Units 9 Features LFIS B 1211 1 4 External air duct design gt Reserve external air duct more flexible for the air supply 1 5 Built in draining pump gt Due to the improvement of structure more convenient to repair or replace the draining pump ja e 2 7 2 i gt Built in draining pump to make sure condensed water drain out reliably Max 750mm Ceiling 10 Indoor Units LFIS B 1211 Features 1 6 Terminals for alarm lamp and long distance on off controller connection are standard gt Reserve terminals for the connection of alarm lamp and long distance on off controller more human control Alarm lamp Long distance on off controller 1 7 Standard touch screen wired controller Touch screen wired controller is standard with error code indication function Better man machine conversation interface gt Undated structure design 4 way wire layout design no raised part at backside more convenient to place the wires and install the device gt Remote controller is optional without auto lifting panel function
19. Power off then turn on the unit 5 seconds later reconnect the power wire Is the error still displaying after several minutes Yes Y Check if there s any interference Such as too many lamps power Remove interference Increase the capacity of anti interference Adopt shield cable Shield cable earthing v Correct the connection v Replace the signal wire transformers Or the signal wire is ue too long No Y Check whether the signal wire is shield cable or whether the shield NO cable is earthing Yes Check whether the wire is correct No polarity P to P Q to Q E to E Yes Check whether the signal wire is Yes broken Check whether the signal wires No insert on main PCB well Y Replace indoor main PCB is the error distinguished NO Y Replace the outdoor main PCB v Pull out and insert back LFIS B 1211 Electrical Control System LFIS B 1211 2 4 4 5 E3 malfunction E3 display Communication malfunction between IPM board and outdoor main board Is there at least one LED in the IPM board light NO Y Check the signal wire between the IPM module and the main board is it connected good NO Reconnect and retry
20. 7 6 2 9 The end of drainage pipe shall not contact with ground directly 70 Installation LFIS B 1211 Drainage pipe installation 6 3 Drainage test 6 3 1 Water leakage test After finishing the construction of drainage pipe system fill the pipe with water and keep it for 24 hours to check whether there is leakage at joint section 6 3 2 Water discharge test 1 Natural drainage mode the indoor unit with outdoor drainage pump Infuse above 600ml water through water test hole slowly into the water collector observe whether the water can discharge through the transparent hard pipe at drainage outlet 2 Pump drainage mode 2 1 Disconnect the plug of water level switch remove the cover of water test hole and slowly infuse about 2000ml water through the water test hole be sure that the water will not touch the motor of drainage pump Cover of test hole Test hole Gr PES NH Drain plug 2 2 Power and let the air conditioner operate for cooling Check operation status of drainage pump and then connect the plug of water level switch check the operation sound of water pump and observe whether the water can discharge through the transparent hard pipe at drainage outlet In light of the length of drainage pipe water shall be discharged about 1 minute delayed 2 3 Stop the operation of air conditioner power of
21. Foam case Plastic spraying surface 1 6 Easy operation 1 7 Remote control and optional wired control method 34 Indoor Units LFIS B 1211 Duct Type 2 Dimensions D Connecting point of refrigerant pipe D gas side Drain point E Connecting point of refrigerant pipe E Liquid side 18K 24K 1068 675 235 983 220 36K 1285 675 235 1200 220 Indoor Units 35 Duct LFIS B 1211 3 Service Space 21000mm gt 35mm 36 Indoor Units LFIS B 1211 Duct Type 4 Wiring Diagrams KUE 18HRDN1 QRC4 KUE 24HRDN1 QRC4 KUE 24HRFN1 QRC8 KUE 36HRFN1 ORC4 202070590734 Outer Driver DC Mator n INDOOR UNIT MAINBOARD E RED i 18 E POWER SETTING TIP 0 TIP azen male ur a lener e i4 Ts tapit a TCT ed kerr EEn i Gode 4 5 7 8 9 CN22 Model 53 71 90 105 140 160 175 i 5 Bening According to related model CN24 5 pacc eee MG DECOR C NE en SNC MEM C tn tn Floor bod VSWING FAN2 en uu LL rz IN fsi ot 5 ri L o E BEE En NEWEAN E END 4G DISPLAY T
22. TIMER Button This button is used to preset the time ON start to operate and the time OFF turn off the operation 9 ON OFF Button Push this button to start the unit operation Push the button again to stop the unit operation Electrical Control System 119 Controller LFIS B 1211 10 FAN SPEED Button This button is used for setting fan speed in the sequence that goes from AUTO LOW MED to HIGH and then back to Auto 11 TEMP UP Button Push this button to increase the indoor temperature setting or to adjust the timer in a counter clockwise direction 12 VENT Button Push this button to set the ventilating mode The ventilating mode will operate in the following sequence Continuous Auto Ventilation Function is available for the Fresh Star Series 120 Electrical Control System LFIS B 1211 Controller 3 2 Wired Remote Controller 3 2 1 KJR 10B Name and functions of buttons on the wire controller ON OF BUTTON M uf mode selection button 1 SPEED SELECTION timer on button 2 9 AJUDSTMENT BUTTON 4 SERI P 5 _ timer off button 3 DC AJUDSTMENT BUTTON 7 C P clock button 4 1 JM 1D SWING BUTTON c M di SEATING 12 ECONOMICAL button Pi ee C confirm button 5 eN replace nutton 6 COOL ONLY COOL AND 13AHEATING SELECTION BUTTON LOCK BUTTON 1 mod
23. 1 Red VsVm 280V 380V 2 Se 45582 54 2 6 FG 1475 Electrical Control System 93 Troubleshooting LFIS B 1211 Control chip is in main PCB Feedback 1 5 ___ Rei Bue Ss w v U 1 Release the UVW connector Measure the resistance of U V U W V W If the resistance is not equal to each other the fan motor must have problems and need to be replaced Otherwise go to step 2 2 Power on and when the unit is in standby measure the voltage of pin4 5 in feedback signal connector If the value is not 5V change the PCB Otherwise go to step 3 3 HRotate the fan by hand measure the voltage of pin1 5 pin 2 5 and pin 3 5 in feedback signal connector If any voltage is not positive voltage fluctuation the fan motor must have problems and need to be replaced 2 4 1 6 Inverter compressor drive protection Only for compact cassette 12k amp console 12k Refer to the outdoor unit P6 malfunction part to solve this problem 94 Electrical Control System LFIS B 1211 2 4 2 For the super slim cassette with up down panel 2 4 2 1 Communication error between indoor unit and up down panel 2 4 2 2 Up down panel is defective Fo Displayed Communication failure between indoor unit and up down panel Or up down panel is defective heck the wire connection between up down panel and indoor unit is it right Correct the connectio
24. Is Yes error still display No Replace IPM board and then check whether the system can run normally No Replace outdoor main board and then check Yes whether the system can run normally No Replace the electric control Yes box Electrical Control System Trouble 15 solved Troubleshooting 101 Troubleshooting LFIS B 1211 2 4 4 6 E4 malfunction E4 display Judge 1 Outdoor condenser temp sensor T3 is malfunction Check whether the wiring of the condenser temp sensor T3 is Yes Connect the wiring well broken off NO Check whether the resistance of condenser temp sensorT3 is Yes Replace condenser temp sensor T3 wrong refer to the Appendix 1 NO v Judge 2 Outdoor ambient temp sensor T4 is malfunction Check whether the wiring of the outdoor ambient temperature Yes Connect the wiring well sensor T4 is broken off Check whether the resistance of outdoor ambient temperature d outdoor ambient sensor T4 is wrong refer to the temperature sensor 4 Appendix 1 No v Replace outdoor main PCB 102 Electrical Control System LFIS B 1211 Troubleshooting 2 4 4 7 E5 malfunction For single phase units
25. LFIS B 1211 3 2 4 Install the main body Make the 4 suspender through the 4 hanger of the main body to suspend it Adjust the hexangular nuts on the four installation hooks evenly to ensure the balance of the body Use a leveling instrument to make sure the levelness of the main body is within 1 Screw nut Shockproof cushion Overhang part Washer Hanging screw bolt 3 2 5 Install the air filter Insert the air filter through the filter slot and fix it with 2 screws 3 2 6 Install the air duct Please design the air duct as below recommended picture Canvas tie in Canvas tie in my y f KAI EEE AN H Isolation booth E A 2 Air outlet Air inlet Isolation booth Air dust filter checking orifi 58 Installation LFIS B 1211 Indoor unit installation 3 3 7 Change the air inlet direction D Take off ventilation panel and flange cut off the staples at side rail Air return flange 4 The installation has finish upon filter mesh which fixing blocks have been insert to the flange positional holes Installation 59 Indoor unit installation LFIS B 1211 3 3 Ceiling amp floor indoor unit installation 3 3 1 Service space for indoor unit 21000mm 235mm NNNNNNNNNNNNNNNNN 3 3 2 Bolt pitch Ceiling installation Capacity Btu h 18K 24K 36K 48K 60K 2 Wall mounted installation an IL LL IL IL
26. M LFIS B 1211 02070590754 i Outer Driver i Motor i INDOOR UNIT MAINBOARD a RED Y i 18 POWER SETTING Reactor eer TIA rr E giu E ee 22 VP 1 di di dek ERS TM heart 1 A 5 MOTOR Cede 4 5 1 5 2 5 Bening According to related model CN24 HM IRR MCI MM I ECC M Ria RIED EE Ceiling Floor Type VSWING SWING 2 N CN14 4 Ti 2 Gi ii NEWFAN Uf 1 PUMP 1 10 DISPLAY TO WIRE ES 10 CONTROLLER zo 164 en CN26 CN3 one RI ALD Ou ut 4 BLACK MIDDLE PIPE TEMP Duct Ceiling Type ________ ________ Geiling Floor Type CN40 CN9 CN23 1 CN33 CN29 CN28 m CN5 ES rs ae T t ex WHITE ROOM TEMP DC MOTOR I gem m DRIVER MODLE IDIDIDIDIDID DDI T 5 HE 1 S ea T2B E Y X Q E P ALARM B len OUTER PIPE TEMP z o a mE T i
27. be use glue to paste together Be sure not bind the insulation material over tight it may extrude out the air in the material to cause bad insulation and cause easy aging of the material 9 2 Insulation of drainage pipe 9 2 1 Operational procedure of refrigerant pipe insulation Select the suitable pipe insulation except joint section piping layout and connection drainage test insulate the joint parts 9 2 2 Purpose of drainage pipe insulation The temperature of condensate drainage water is very low If insulation is not enough it shall form dew and 74 Installation LFIS B 1211 Engineering of insulation cause leakage to damage the house decoration Installation 75 Engineering of electrical wiring LFIS B 1211 9 2 3 Insulation material selection for drainage pipe gt gt gt The insulation material should be flame retardant material the flame retardancy of the material should be selected according to the local law Thickness of insulation layer is usually above 10mm Use specific glue to paste the seam of insulation material and then bind with adhesive tape The width of tape shall not be less than 5cm Make sure it is firm and avoid dew 9 2 4 Installation and highlights of insulation construction The single pipe should be insulated before connecting to another pipe the joint part should be insulated after the drainage test There should be no insulation gap between the in
28. example the digital display tube show 0 5 it means the IGBT radiator temp is 105 degree the digital display tube show 1 6 it means the IGBT radiator temp is 116 degree The indoor unit can communicate with outdoor unit well If the temp is lower than 0 degree the digital display tube will show 0 If the temp is higher than 70 degree the digital display tube will show 70 If the capacity demand is 0 the digital display tube will show 0 If the indoor unit is not 5 connected the digital display tube will show Actual data HP 10 If capacity demand code is higher than 99 the digital display tube will show single digit and tens digit For example the digital display tube show 5 0 it means the capacity demand is 15 the digital display tube show 60 it means the capacity demand is 6 0 If the indoor unit is not connected the digital display tube will show 87 Troubleshooting LFIS B 1211 2 Troubleshooting 2 1 Display board 2 1 1 leon explanation on indoor display board Super slim cassette Temporary button Digital LED Infrared signal receiver Operation lamp indicator Alarm indicator PRE DEF indicator cooling and heating type or fan only indicator cooling only type 2 1 2 leon explanation on indoor display board A5 Duct PRE DEF indicator cooling and heating type or fan only indicator cooling only type Timer indicator A
29. intersection with other pipelines and ensure slope is straight 6 2 2 Drainage pipe selection hedrainage pipe diameter shall not small than the drain hose of indoor unit According to the water flowrate and drainage pipe slope to choose the suitable pipe the water flowrate is decided by the capacity of indoor unit Relationship between water flowrate and capacity of indoor unit Capacity x1000Btu Water flowrate l h 12 18 24 30 36 42 48 According to the above table to calculate the total water flowrate for the confluence pipe selection For horizontal drainage pipe The following table is for reference Allowable maximum water flowrate l h PVC pipe Reference value of inner diameter of pipe Sope 1 50 Siope 1 100 125 175 Could be used for confluence pipe Attention Adopt PVC40 or bigger pipe to be main pipe For Vertical drainage pipe The following table is for reference PVC pipe poo nee n Allowable maximum water flowrate l h Remark diameter For branch pipe 2 PVC63 2760 Could be used for confluence pipe PVC75 5710 Attention Adopt or bigger pipe to be the main pipe 68 Installation LFIS B 1211 Drainage pipe installation 6 2 3 Individual design of drainage pipe system gt drainage pipe of air conditioner shall be installed separately with other sewage pipe rainwater pipe and drainage pipe in building hedrainage
30. pipe of the indoor unit with water pump should be apart from the one without water pump 6 2 4 Supporter gap of drainage pipe gt general the supporter gap of the drainage pipe horizontal pipe and vertical pipe is respectively 1m 1 5m and 1 5m 2 0m gt Each vertical pipe shall be equipped with not less than two hangers gt Overlarge hanger gap for horizontal pipe shall create bending thus leading to air block Too long distance Gas bag 6 2 5 The horizontal pipe layout should avoid converse flow or bad flow Drainage pipe Drainage pipe Drainage pipe Drain tee EEN et Water flow Water flow Water flow Water flow Water flow Drain tee Bilal tee Stern water flow Water Water Branch pipe P cd X gt hecorrect installation will not cause converse water flow and the slope of the branch pipes can be adjusted freely gt The false installation will cause converse water flow and the slope of the branch pipe can not be adjusted 6 2 6 Water storage pipe setting gt Ifthe indoor unit has high extra static pressure and without water pump to elevate the condensate water such as high extra static pressure duct unit the water storage pipe should be set to avoid converse flow or blow water phenomena Main pipe Installation 69 Drainage pipe installat
31. the compressor will stop and restart when 2 lt 54 1 3 4 Auto mode This mode can be chosen with remote controller and the setting temperature can be changed between 17 30 In auto mode the machine will choose cooling heating or mode according to T1 Ts Indoor fan will run at auto fan of the relevant mode The louver operates same as in relevant mode If the machine switches mode between heating and cooling the compressor will keep stopping for 15 minutes and then choose mode according to T1 Ts If the setting temperature is modified the machine will choose running function again 1 3 5 Drying mode Drying mode works the same as cooling mode in low speed All protections are active and the same as that in cooling mode 84 Electrical Control System LFIS B 1211 Electrical Control Function 1 3 6 Timer function 1 3 6 1 Timing range is 24 hours 1 3 6 2 Timer on The machine will turn on automatically when reaching the setting time 1 3 6 3 Timer off The machine will turn off automatically when reaching the setting time 1 3 6 4 Timer on off The machine will turn on automatically when reaching the setting on time and then turn off automatically when reaching the setting off time 1 3 6 5 Timer off on The machine will turn off automatically when reaching the setting off time and then turn on automatically when reaching the setting on time 1 3 6 6 The timer function will not change
32. unit and outdoor unit are installed properly Tubing and wiring are correctly completed The refrigerant pipe system is leakage checked The drainage is unimpeded The ground wiring is connected correctly The length of the tubing and the added stow capacity of the refrigerant have been recorded The power voltage fits the rated voltage of the air conditioner There is no obstacle at the outlet and inlet of the outdoor and indoor units The gas side and liquid side stop values are both opened The air conditioner is pre heated by turning on the power 11 3 Test operation oet the air conditioner under the mode of COOLING by remote controller and check the following points Indoor unit VVO VVVVV VV WV Whether the switch the remote controller works well Whether the buttons on the remote controller works well Whether the air flow louver moves normally Whether the room temperature is adjusted well Whether the indicator lights normally Whether the temporary buttons works well Whether the drainage is normal Whether there 15 vibration or abnormal noise during operation utdoor unit Whether there is vibration or abnormal noise during operation Whether the generated wind noise or condensed of by the air conditioner have influenced your neighborhood Whether any of the refrigerant is leaked Installation 77 Electrical Control System 78 LFIS B 1211 Part 5 Electrical Control System 1 Electric
33. unit running mode code Actual data 4 If the value is higher than 99 the digital display tube will show EXV open angle single digit and tens digit For example the digital display tube show 2 0 it means the EXV open angle is 120x4 480p Frequency limit Bit7 caused by IGBT radiator Frequency limit caused by PFC The display value is hex Frequency limit Bit5 number For example caused by 14 oe TET the digital display tube limit i Frequency limit symbol caused by T2 Bit3 1 Biti 1 Frequency limit ES NS e Bit3 It means frequency limit EM Eee E caused T4 T3 and Freguency limit Bit1 caused by current Frequency limit caused by voltage The display value is between 13 120 degree If the temp is 17 IGBT radiator temp Reserved lower than 13 degree the digital display tube will show 413711 the temp is higher than 99 degree the digital display tube will 86 Electrical Control System 02 03 04 05 07 Off 0 Fan only 1 Cooling 2 Heating 3 Forced cooling 4 10 11 12 13 4 1 LFIS B 1211 Indoor unit number Condenser pipe temp of 1 indoor unit Condenser pipe temp of 2 indoor unit 1 Indoor unit capacity demand code 2 Indoor unit capacity demand code 3 Indoor unit capacity demand code Condenser pipe temp of 3 indoor unit Electrical Control System Electrical Control Function show single digit and tens digit For
34. 127 029974 225662 48 373476 88 090753 128 02926 218094 49 35862 087950 12 0284822 10 207184 50 345097 90 085248 130 027770 1 19689 5 331847 91 082643 131 027078 nm se 3190s 2 192 026408 13 178005 53 307075 93 077709 133 02557 14 169934 54 29586 94 075373 134 0251225 15 ense 5 284m os orno 15 16 15348 56 273823 96 070944 136 023910 __ 17 146181 5 2603682 97 0684 137 02598 18 139180 58 253973 98 066818 18 02276 19 132631 59 244677 99 064862 139 022281 o ro Jj IO o rojo o jco m o cdo jo o OoO o fool N O17 amp Po Co CO w N AM o N 45 45 45 RPE RTE 5 1 AIN O O1 O1 O17 O17 O1 O17 O17 O1 O1 5 5 gt 5 N Electrical Control System 115 Troubleshooting LFIS B 1211 Appendix 2 Unit C K Discharge temp sensor table s sus s
35. 1N 50HZ 380 420 50Hz N 220 230V 1N 60Hz D 220 60Hz C 380 420v 3N 60HZ Refrigerant N1 R410A R22 D DC Inverter On Off F Full DC Function Code C Cooling Only H Cooling amp Heating A Cooling Heating P TC Capacity x 1000Btu h T Tropical Condition 1 Condition U Side Discharge Outdoor Unit V Top Discharge Outdoor Unit S Centrifugal Fan Outdoor Unit O Outdoor unit Midea General Information Features 4 1 To meet Europe A level actual EER COP of new product with BLDC motors of indoor amp outdoor unit and DC compressor will be higher than 3 4 4 2 Low ambient kit is standard for outdoor units 4 3 Network control function is standard for the indoor units 4 4 Standard auto restart function and follow me function 4 5 Slim cassette with standard remote controller wire controller and CCM for optional Med Duct and HESP duct with standard wired controller remote controller and CCM for optional 4 6 Standard anti cold air function 4 7 Standard auto defrosting function 4 8 Standard self diagnose function 4 9 Standard timer function and sleep mode function controlled by controller General Information 5 Indoor Units LFIS B 1211 Part 2 Indoor Units Super Slim Cassette Type 7 VDO 20 Ceiling amp Floor Type
36. 5mm for the models which with Lise Score cable 31 0mm for the others for the others 3 shielded cable 3 3 core shielded cable 3x 0 4mm Power supply 1 Phase 220 240 186 30 3 core cable 3x2 5mm 36K 60K 3 core cable 3x4 0mm Power supply 3 Phase 380 415 30K 60K 5 core cable 5x2 5mm OUTDOOR UNIT OUTDOOR UNIT Lu Lise core cable 3x1 0mm 2 auxiliary electric heater PTE Lt For 30K 60K Btu h For 18K 60K Btu h with 3 Phase outdoor unit with 1 Phase outdoor unit 40 Part 3 LFIS B 1211 Part 3 Part 3 Outdoor Units Leer 42 2 SPACE 43 3 PIDING DiagtamS 44 4 Winnog Diagram S Iene 45 5 Electi aaant 47 b Operation LIMITS ouo etos nice a detained edes 48 SOUNG pc a 49 3 AL Dimensions LFIS B 1211 1 Dimensions
37. 8 Cross screwdriver Installation 55 Indoor unit installation LFIS B 1211 Tighten the screws under the panel hooks till the panel closely stick on the ceiling to avoid condensate water D Loosen upper nut gt lt lt Gap not allowed 2 Adjust lower nut Leakage Ceiling See Water condensation 5 Hang the air in grill to the panel then connect the lead terminator of the swing motor and that of the control box with corresponding terminators on the body respectively Pollution Install the 4 corner covers back Installation cover s Tap Screw Slide the four sliders in the corresponding channel when installing the cover Note The panel shall be installed after the wiring connected 56 Installation LFIS B 1211 Indoor unit installation 3 2 A5 duct indoor unit installation 3 2 1 Service space for indoor unit 200mm or more 300mm or more IL 5 lt 600mm amp 600mm checking orifice 3 2 2 Bolt pitch Electric control box Size of outline dimension mounted plug Capacity KBtu 24 30 36 3 2 3 Install the pendant bolt Select the position of installation hooks according to the hook holes positions showed in upper picture Drill four holes of 2 45 50mm deep at the selected positions on the ceiling Then embed the expansible hooks fittings Installation 57 Indoor unit installation
38. E5 display Voltage protection Check the voltage of outdoor unit power supply whether the voltage No Check the power supply between L 1 and N is about 220 240 Y Replace the power board then check whether the system can run normally NO Check whether the voltage of IPM board P and N is normal DC277 356V for 18K 24K 30KBtu h DC277 410V for 36K 48KBtu h NO Replace bridge rectifiers and then check whether the system can run normally Yes i Replace IPM board and then check whether the system can run normally Yes NO Replace outdoor main board rouble is solved Electrical Control System 103 Troubleshooting LFIS B 1211 2 4 4 8 E5 malfunction For three phases units E5 display Voltage protection Check the voltage of outdoor unit power supply whether the voltage between L 1 L 2 L 3 and is about No Check the power supply 220 and between L 1 L 2 L 3 is about Yes Y Replace the power board then check whether the system can run normally NO Check whether the voltage range of P N on IPM module is normal DC 350 650V NO Yes Replace bridge rectifiers and then check whether the system can run normally Yes dli
39. IMER OFF Display ON OFF if simultaneously set the mode of TIMER ON and TIMER OFF Temperature display area Usually display the set temperature Press the buttons of and to set temperature at the mode of FAN there is no figure display in the area Electrical Control System LFIS B 1211 Controller Installation Wiring Principle Sketch 5 Core Shield Cable the length is decided by installation O O RUN GND Indoor Unit Switch Board Installation Notice When the air conditioner needs the constant frequency wire Controller be sure adding a Wire Joint with 5 terminal named in indoor unit and fixing a infrared emitter whose anode and cathode connecting with A and B near the receiver in the Indoor Unit Switch Board then connecting the terminal 5v GND Run in the Switch Board to C D E respectively Turn a screwdriver at the concave on bottom panel of the Wire Controller to remove the Back Cover Wire Controller Back Cover Wire Controller LCD Wire Controller Board Wood Mounting Screw 4 20 Wire Controller Bottom Cover When installing the Wire Controller Cover be sure there is a hole in the wall to avoid the Wire Controller Back Cover being fixed directly to the wall which is not allowed for the Wire Joint When installing the Wire Controller you should xtrudes out of the Wire Controller Back Cover adjust the bottom of the Wire Control
40. INSTRUKCJA OBS UGI urz dze klimatyzacyjnych KAISAI KAISA New Energy Requirement SUPER DC INVERTER SERIES Service Manual 2012 LFIS B 1211 EuroClima amp General Information Contents LFIS B 1211 Part 1 General pm 1 Part 2 UNS si 6 Part 3 Outdoor 41 AGU ENS Valea 8 220 0 5 90 00 000 0 0 0 0 2008090 50 Parto Electrical Control E 78 specifications designs and information in this book are subject to change without notice for product improvement Contents LFIS B 1211 General Information Part 1 General Information 1516 2 2 z i igii iBalojer Y lgzlglel me EE E E ED 3 2 1 In dOOF UNI aa FIR FATA vene rea REV RN EVE VEN ROV P E RENE 3 2 2 Outdoor UNITS cec MEE NE ARRERUREDNAERURRSARERNEN ANNE 3 9 INOMEMG ALUN B associe cussaa sas _________ 4 5 General Information 1 Model Lists LFIS B 1211 Model Lists 1 1 Indoor Units R410A capacity multiplied by 1000Btu h Spesmosem ____ Owimpadham Geiling floor Cooling and heating 1 2 Outdoor Units Universal Ou
41. IS B 1211 Refrigerant pipe installation 5 Refrigerant pipe installation 5 1 Maximum pipe length and height drop Considering the allowable pipe length and height drop to decide the installation position Make sure the distance and height drop between indoor and outdoor unit not exceeded the date in the following table 36 000Btu h 48 000Btu h 65m 30m 5 2 The procedure of connecting pipes 5 2 1 Choose the pipe size according to the specification table 5 2 2 Confirm the cross way of the pipes 5 2 3 Measure the necessary pipe length 5 2 4 Cut the selected pipe with pipe cutter gt Make the section flat and smooth C X E 7 Lean Crude Burr pee ZA ZA 5 2 5 Insulate the copper pipe gt Before test operation the joint parts should not be heat insulated 5 2 6 Flare the pipe gt Insert a nut into the pipe before flaring the pipe gt According to the following table to flare the pipe ELEM ENNN A mm Pipe diameter Flare shape R0 4 0 8 1 2 12 7 3 4 gt After flared the pipe the opening part must be seal by end cover or adhesive tape to avoid duct or exogenous impurity come into the pipe 5 2 7 Drill holes if the pipes need to pass the wall 5 2 8 According to the field condition to bend the pipes so that it can pass the wall smoothly 5 2 9 Bind and wra
42. K 3 core cable 3 2 5mm 36K 60K 3 core cable 3x4 0mm Power supply 3 Phase 380 415 30K 60K 5 core cable 5x2 5mm OUTDOOR UNIT OUTDOOR UNIT LI For 30K 60K Btu h with 3 Phase outdoor unit For 18K 60K Btu h with 1 Phase outdoor unit for the others Indoor Units 19 Duct 20 Umum 2 51 3 Service Space 4 Wiring Diagrams 5 Static Pressure 6 Electric Characteristics 7 Sound Levels 8 5 1 5 9 The Specification of Power 10 Field WirlIng 5 eise LFIS B 1211 Duct Type Indoor Units LFIS B 1211 Duct Type 1 Features 1 1 Installation accessories Optional Front Board Canvas Air Passage Filter Panel for easy installation Panel 1 2 Easy Installation Two air inlet styles Bottom side or Rear side Airinlet from rear is standard for all capacity air inlet from bottom is optional gt size of air inlet frame from rear and bottom is same it s very easy to move the cover from bottom to rear side or from rear to the bottom in order to matching the installation condition _ Air intake from rear Standard Air intake from bot
43. LL SEE SN Re 20 AT 10 ER 200 300 400 500 600 700 800 900 1000 1100 1200 700 800 900 1000 1100 1200 1300 1400 1500 Air volume m h Air volume m R 36 000Btu h Pa 90 80 5 7 Super high speed T 5 ao High speed 50 Mid speed E 40 d sp m 30 20 T 1100 1200 1400 1600 1800 2000 2200 2400 Air volume m h Indoor Units 27 Duct LFIS B 1211 6 Electric Characteristics Power Supply Mm Max ma Note MFA Max Fuse Amps A 28 Indoor Units LFIS B 1211 Duct Type 7 Sound Levels Concealed Duct Type Discharge Suction Duct Duct 1 4m Microphone Noise level dB A Model Sound Power A dB KTB 18HWFN 1 QRC4 38 Indoor Units 29 Duct LFIS B 1211 8 Accessories Soundproof insulation sheath Tubing amp Fittings Drainpipe Fittings for cooling amp heating Seal ring Wired controller amp Its Frame Wired controller Owner s manual Installation manual Magnetic ring twist the electric wires L EMS amp It s
44. O WIRE o CN TO CN10A BOARD CONTROLLER o d En 2 EET i CN6 Ese c CN26 CNS AA LAAG 5 TI E BLACK MIDDLE PIPE TEMP ane Ceiling Floor KK AAD 11 CN40 CN23 I CN33 CN29 28 WHITE ROOM TEMP DC MOTOR 1 DRIVER MODLE leleleleiee DBI A T2B EY X ALARM OUTER PIPE TEMP 14 i T T i 5 i i p 1 T i 2 E 5 i 4 rie LJ 4158 983 C E cs een EE il in MANNE Ti RET H LH Outer Driver 2 To autdoor T Remote P Alarm Earth I Comm Bus a Comm Bus 11 ontrol 7 Output autdaar LN DC Motor il ee pele i ___ _ CommBus ii E To Power For Setting NETaddress For Setting POWER 0 0 0 p r F r F r gor F r 07 i Sa d 5 d 1 any an VS J g oe 51452 5 1 2 1 o gg 1 JE amp En E ts 12 12 12 12 ET bfal EET bra M Code 00 0 01 10 0 11 4 5 7 8 9 NETaddres
45. X OFF ON display Jj 7 Temperature display 3 Economical operation display Mode select button MODE Press MODE button to select COOL DRY HEAT or FAN ONLY mode HEAT is invalid for COOL ONLY wire controller eel Brin Steed Fan speed button FAN SPEED Press FAN SPEED to select fan speed from AUTO LOW MED and HIGH NOTE some air conditioners have no MED fan speed and then the MED is regarded as HIGH Economical operation displays Press ECONOMICAL to display economical operation if press ECONOMICAL again then the display disappears Lock display Press LOCK to display the icon of LOCK Press the button again then the icon of LOCK disappears In the mode of LOCK all the buttons are invalid except for LOCK button CLOCK display Usually display the clock set currently Press the button CLOCK for 4 seconds the HOUR part will flash press button A and V to adjust HOUR Press the button CLOCK again the minute part flash press button or V to adjust MINUTE After clock set or clock operation it must press CONFIRM to complete the set TIMER ON OFF display Display ON at the state of TIMER ON adjustment or after only set the TIMER ON Display OFF at the state of TIMER OFF adjustment or after only set the T
46. al Control Function 79 2 TFOUDIESNOOUNG EE TEE DT 88 CONTONE soeur ER eneen CUSEEEUEEN EVE RE 117 Electrical Control System LFIS B 1211 Electrical Control Function 1 Electrical Control Function 1 1 Definition T1 Indoor room temperature T2 Coil temperature of indoor heat exchanger middle T2B Coil temperature of indoor heat exchanger outlet T3 Coil temperature of condenser T4 Outdoor ambient temperature T5 Compressor discharge temperature 1 2 Main Protection 1 2 1 Time delay at restart for compressor 1 2 2 Temperature protection of compressor top The unit will stop working when the compressor top temp protector cut off and will restart after the compressor top temp protector restart 1 2 3 Temperature protection of compressor discharge When the compressor discharge temp is getting higher the running frequency will be limited as below rules f 102 lt 5 lt 115 C decrease the frequency to the lower level every 2 minutes till to F1 f T5 gt 115 for 10 seconds the compressor will stop and restart till 5 lt 90 C 1 2 4 Sensor protection at open circuit and breaking disconnection 1 2 5 Indoor fan delayed open function When the unit starts up the louver will be active immediately and the indoor fan will open 10s later If the unit runs in heating mode the indoor fan will be also controlled by anti cold wind function 1 2 6 Fan Speed is out
47. alfunction Yes If the EEPROM chip is welded on PCB replace the PCB NO directly Otherwise check whether the EEPROM chip plugged in PCB well Yes Y Replace the outdoor main board 98 Insert the EEPROM well LFIS B 1211 Electrical Control System LFIS B 1211 2 4 4 3 2 malfunction Only for 12k Power off then turn on the unit 5 seconds later reconnect the power wire ls the error still displaying after several minutes Yes Y Check all the wirings between indoor and outdoor indoor main PCB and outdoor main PCB following the wiring diagram Are all the wirings connected correctly Yes Measure Vs is it moving alternately between positive value and negative value Vs is the voltage between S N of outdoor unit Yes Y 5 the wiring to the outdoor main PCB connected correctly Yes Change the outdoor main PCB Power on Is the error extinguished No Y Change the indoor main PCB Electrical Control System Is the wiring to the indoor main PCB connected correctly Yes Y Change the indoor main PCB Power on Is the error extinguished NO v Change the outdoor main PCB Troubleshooting 99 Troubleshooting 2 4 4 4 E2 malfunction For 18 60k
48. alled equivalently at the both side of the U type branch pipe Permitted Value Piping Total pipe length Actual L L1 L2 Max branch pipe length 11 12 Max branch pipe length difference 10m Li L2 height difference between mt indoor unit and outdoor unit Max height difference between 05m indoor units 66 Installation LFIS B 1211 Refrigerant pipe installation 5 3 2 Size of joint pipes for indoor unit R410a Capacity of indoor unit 127 635 CE FQZHN D01C 9 5 Size of main pipe mm 5 5 3 4 The branching pipe must be installed horizontally error angle of it should not large than 10 Otherwise malfunction will be caused U shaped branching pipe A direction view Wrong Correct Horizontal surface Installation 67 Drainage pipe installation LFIS B 1211 6 Drainage pipe installation Install the drainage pipe as shown below and take measures against condensation Improperly installation could lead to leakage and eventually wet furniture and belongings 6 1 Installation principle gt Ensure at least 1 100 slope of the drainage pipe Adopt suitable pipe diameter Adopt nearby condensate water discharge 6 2 Key points of drainage water pipe installation 6 2 1 Considering the pipeline route and elevation Before installing condensate water pipeline determine its route and elevation to avoid
49. cause rain water might penetrated into pipeline 3 Construction period is long and rain water might penetrated into pipeline 4 Rain water might penetrate into pipeline during construction Procedures of special vacuum drying are as follows 1 Vacuum drying for 1 hour 2 Vacuum damage filling nitrogen to reach 0 5Kgf cm2 Because nitrogen is dry gas vacuum damage could achieve the effect of vacuum drying but this method could not achieve drying thoroughly when there is too much moisture Therefore special attention shall be drawn to prevent the entering of water and the formation of condensate water 3 Vacuum drying again for half an hour If the pressure reached 55mmHg start to pressure leakage test If it can not reached the value repeat vacuum damage and vacuum drying again for 1 hour 4 Leakage test After the vacuum degree reaches 55mmHg stop vacuum drying and keep the pressure for 1 hour If the indicator of vacuum gauge does not go up it is qualified If going up it indicates that there is moisture or leak source 72 Installation LFIS B 1211 Additional refrigerant charge Additional refrigerant charge After the vacuum drying process is carried out the additional refrigerant charge process need to be performed The outdoor unit is factory charged with refrigerant The additional refrigerant charge volume is decided by the diameter and length of the liquid pipe between indoor and outdoor unit Refer the following form
50. ck the connections between temperature sensor and PCB Are No Correct the connections the connections good Yes Check the resistance value of the sensor via Appendix 1 Yes Replace indoor or outdoor PCB NO Replace the sensor 90 LFIS B 1211 Electrical Control System LFIS B 1211 Troubleshooting 2 4 1 2 Outdoor unit malfunction Outdoor unit malfunction Whether the outdoor main board has error Yes Refer to corresponding solving steps display NO v Whether the outdoor unit is power on Yes NO v Check whether the power is on Check whether the communication wire between the indoor and No outdoor unit is connected correctly Connect the wiring well or replace the communication wire Yes outdoor main board Check if the errors happen again No Yes Y Y Replace the indoor PCB gt Trouble is solved Electrical Control System 91 Troubleshooting LFIS B 1211 2 4 1 3 Indoor EEPROM malfunction Shut off the power supply and turn it on 5 seconds later Is it still displaying the error code Yes If the EEPROM chip is welded on PCB replace the PCB directly Otherwise Insert the EEPROM check whether the EEPROM chip plugg
51. ction of drain pump Main action under different condition every 5 seconds the system will check the water level one time 1 When the A C operates with cooling including auto cooling and forced cooling mode the pump will start running immediately and continuously till stop cooling 2 Once the water level increase and up to the control point LED will alarm and the drain pump open and continue checking the water level If the water level fall down and LED disalarmed drain pump delay close 1 minute and operate with the last mode Otherwise the entire system stop operating including the pump and LED remain alarming after 3 minutes Electrical Control System 85 Electrical Control Function LFIS B 1211 1 3 10 Point Check Function There is a check switch in outdoor PCB Press the switch SW1 to check the states of unit when the unit is running Press the switch N times it will display the content corresponding to No N After getting into the check function it will display No N with 1 5s meanwhile the low bit decimal of digit display flashing indicated to get into the check function display After 1 5s it will display the content corresponding to No N the digital display tube will display the follow procedure when push SW1 each time N Display Remark Normal display Display running frequency running state or malfunction code Actual data HP 10 If capacity demand code is higher than 99 the digital display tube will show s
52. defrosting 82 Electrical Control System LFIS B 1211 T4 1 Timel Time2 Time conditions time Time conditions Meet the following conditions 1 Running in heating mode 2 T423 C 3 Compressor is on 4 T3sTempEnterDefrost_ADD Cleared conditions Meet any one of the following conditions 1 Compressor is off 2 2 gt TempEnterDefrost ADD Time2 Time conditions Meet the following conditions 1 Running in heating mode 2 T4 lt 3 3 Compressor is on 4 T3STempEnterDefrost ADD Cleared conditions Meet any one of the following conditions 1 Compressor is off and gt TempEnterDefrost ADD 2 r 2Qastifutes 2 Running in cooling mode 3 Compressor is off for 1 hour Condition of entry defrosting time1 time2240 minutes When defrosting is end time1 and are cleared Defrosting action Electrical Control System Electrical Control Function 83 Electrical Control Function LFIS B 1211 4 Way valve no longer than 10min Compressor 108 308 Outdoor fan PMV running 8 mins with 300P 480P Condition of ending defrosting If any one of following items is satisfied defrosting will stop and the machine will turn to normal heating mode D The defrosting time achieves 10min D 215 C 3 gt 7 for 60seconds 1 3 3 5 High evaporator coil temp T2 protection 2 gt 60 C
53. e refrigerant pipe is blocked Judge 1 Check whether the outdoor ambient temperature is higher than 50 Stop the unit Clean the heat exchanger Replace the temperature sensor heck whether the resistance of condenser temp sensor is correct Yes Replace outdoor main board refer to the Appendix 1 Let the refrigerant out then use the high Yes pressure nitrogen or refrigerant to blow pipe vacuumize and charge the refrigerant again Electrical Control System 111 Troubleshooting LFIS B 1211 2 4 4 16 P6 malfunction For single phase units At first test the resistance between every two ports of U V W of IPM and P N If any result of them is O or close to 0 the IPM is defective Otherwise please follow the procedure below P6 display module protection Check whether the voltage range of P N on IPM module is Check whether the input power supply is Regulate it to correct then check whether the normal DC277 356V for 18K No 2 x 24K 30KBtu h DC277 410V for correct zd IN Sen Work 36K 48KBtu h ys Yes Y s NO Check whether the connecting line between main board and the IPM module is connected tightly Connect it tightly check ok or not hec
54. e selection button is used to select mode push the button one time then the operation modes will change In turn as follows Ere te Remark no heating mode if wire controller is set as the cool only 2 Timer on button Push the button to set TIMER ON each time you push the button the time moves forward by 0 5 hours When the set time is over 10 hours each time you push the button the time moves forward by 1 hour want to cancel the TIMER ON then adjust the time of TIMER ON as 0 0 3 Timer off button Push the button to set TIMER OFF each time you push the button the time movee forward by 0 5 hours When the set time is over 10 hours each time you push the button the time moves forward by 1 hour want to cancel the TIMER OFF then adjust the time of TIMER OFF as 0 0 4 CLOCK button Normally display the clock set currently display 12 00 for the first electrifying or resetting When push the button for 4 seconds the hour part on the clock display flashes every 0 5 seconds then push button and to adjust hour push the button CLOCK again the minute part flashes every 0 5 seconds then push and button to adjust minute When set clock or alter clock setting must push the confirm button to complete the setting Electrical Control System 121 Controller LFIS B 1211 Name and function of LCD on the wire controller 122 2 FAN speed ter Lg 5 Y CLOCK display 6
55. ed in PCB well Yes v Replace the indoor PCB 2 4 1 4 Full water malfunction If the water level switch is inserted well Yes Y If the water level switch is broken NO NO Insert the water level switch well v Yes Replace the water level switch the water pump is No normal v Replace the water pump Yes Check PCB board or replace the indoor main PCB 92 Electrical Control System LFIS B 1211 Troubleshooting 2 4 1 5 Indoor fan Speed has been out of control Only for the units used DC motor Shut off the power supply and turn it on 1 minute later Is it No The unit operates normally still displaying the error code Yes shut off the power supply rotate the fan by hand Does np OE fan it rotate properly Yes Check the wires of fan motor Are all the connections good Yes Y Check the voltage between Correct the connections every port and GND port of fan motor connector does it comply with the table No Y Yes Replace indoor main PCB Is it still displaying the error code DC motor voltage input and output control chip is inside the motor x e DC motor voltage input and output NO Color Signa Voltage
56. f the power supply and put the cover of water test hole back to the original place a After stopped the air conditioner 3 minutes check whether there is anything abnormal If drainage pipes have not been distributed properly over back flow water shall cause the flashing of alarm indicator at remote controlled receiving board and even water shall run over the water collector b Continuously infusing water until water level alarmed check whether the drainage pump could discharge water at once If water level does not decline under warning water level 3 minutes later it shall cause shutdown of unit When this situation happens the normal startup only can be recovered by turning down power supply and eliminating accumulated water Note Drain plug at the main water containing plate is used for eliminating accumulated water in water containing plate when maintaining air conditioner fault During normal operation the plug shall be filled in to prevent leakage 6 4 Insulation work of drainage pipe Refer the introduction to the insulation engineering parts Installation 71 Vacuum Drying and Leakage Checking LFIS B 1211 7 Vacuum Drying and Leakage Checking 7 1 Purpose of vacuum drying gt Eliminating moisture in system to prevent the phenomena of ice blockage and copper oxidation Ice blockage shall cause abnormal operation of system while copper oxide shall damage compressor Eliminating the non condensable gas air in system to p
57. fitting and N around it to five circles 30 Indoor Units LFIS B 1211 Duct Type 9 The Specification of Power Frequency and Voltage 220 240V 50H 220 240V 50H 220 240V 50H POWER WIRING mm Frequency and Voltage 220 240V 50Hz 220 240V 50Hz 380 420V 50Hz OUTDOOR UNIT POWER POWER WIRING mm CIRCUIT BREAKER A 30 7 40 Indoor Outdoor Connecting Wiring Weak Electric Signal mmf Indoor Outdoor Connecting Wiring Strong Electric Signal mm 2 3 A x1 15 30 Indoor Units 31 Duct LFIS B 1211 10 Field Wiring Air Condition Link Circuit 202042890198 INDOOR UNIT INDOOR UNIT Power supply 1 Phase 220 240v Use 3 core cable 3 2 5mm 2 for the models which with auxiliary electric heater se 3 core cable 3x1 0mm 2 Power supply 1 Phase 220 240V NAA Use cable 3 2 5mm LB for the models which with auxiliary electric heater PTE Lise Score cable 31 0mm for the others 3 shielded cable 3 0 5mm 3 core shielded cable 3x 0 5mm Power supply 1 Phase 220 240V 18K 30K 3 core cable 3x 2 5mm 36K 60K 3 cable 3x4 mm Power supply 3 Phase 380 415 30K 60K 5 core cable 5x2 5mm OUTDOOR UNIT OUTDOOR UNIT LJ For30K 60K Btu h with 3 Phase outdoor unit For 18K 60K Btu h with 1 Phase outdoor unit for the others
58. g point of refrigerant pipe E Liquid side 2 7 Drain point Downward declicity lower between 1 2 100 2 Wall mounted installation Hang the indoor unit by insert the tapping screws into the hanging arms on the main unit The bottom of body can touch with floor or suspended but the body must install vertically FI PF PF PF HF PH HF FIF FF Installation 62 Outdoor unit installation Side Discharge Unit LFIS B 1211 4 Outdoor unit installation Side Discharge Unit 4 1 Service space for outdoor unit Wall or obstacle Air inlet 1 9 gt 30 Maintain channel N 260cm 7 Air inlet gt 200 oy Fig 6 5 Fix with bolt 4 2 Bolt pitch B 4 3 Install the Unit Since the gravity center of the unit is not at its physical center so please be careful when lifting it with a sling Never hold the inlet of the outdoor unit to prevent it from deforming Do not touch the fan with hands or other objects 63 Installation 64 Outdoor unit installation Side Discharge Unit LFIS B 1211 Do not lean it more than 45 and do not lay it sidelong Make concrete foundation according to the specifications of the outdoor units Fasten the feet of this unit with bolts firmly to prevent it from collapsing in case of earthquake or strong wind Fix with bolt Installation LF
59. ge of inflammable gas It should be a dry and well ventilation place The support should be flat and horizontal Do not install the outdoor unit in a dirty or severely polluted place so as to avoid blockage of the heat exchanger in the outdoor unit is built over the unit to prevent direct sunlight rain exposure direct strong wend snow and other scraps accumulation make sure that heat radiation from the condenser is not restricted More than 30cm A Pal More than 60cm Service space More than 30cm ed More than 60cm m More than 70cm Installation LFIS B 1211 Indoor unit installation 3 Indoor unit installation 3 1 Supper slim cassette indoor unit installation 3 1 1 Service space for indoor unit 7 Connecting point of Connecting point of drain pipe refrigerant pipe Liquid side A Connecting point of IFA refrigerant pipe Gas side d gt 1000mm gt 1000mm 2 t Outlet N Panel 880mm ceiling hole 7 Ground A H R410A and R22 Cooling Cooling 8 Heating R410A and R22 Cooling Cooling amp Heating gt 2500mm 3 1 2 Bolt pitch Tubing side Drain side E SEEIELEEL pn en gt tt T al 680 Hook location 950 Panel
60. gh pressure nitrogen or refrigerant to blow pipe vacuumize and charge the refrigerant again Troubleshooting 107 Troubleshooting 2 4 4 12 P2 malfunction Only for 30K 60k P2 display Low pressure protection Judge 1 Whether the wiring between the low pressure protector and main control board is connected well or correctly Yes Y Judge 2 Whether the low pressure protector is broken Method Short connect the low pressure protector socket check whether the system can run normally Check whether the refrigerant system is ok Judge 3 Check whether the outdoor ambient temperature is too low Judge 4 The refrigerant of the system is leakage Method Connect the pressure gauge to the gauge joint of the system check whether the pressure is lower than 0 14MPa No Judge 5 The refrigerant pipe is blocked d CE nn No Replace outdoor main board 108 Connect it well Yes Replace low pressure protector Yes Yes Yes Stop the unit Leak hunting Charge nitrogen or refrigerant to the system if the leakage is serious there will be distinct gas leakage sound if the leakage is slight use the suds mixture of water and abluent is also ok if it can make bubble or electro
61. ingle digit and tens digit For example the digital display tube show 5 0 it means the capacity demand is 15 the digital display tube show 60 it means the capacity demand is 6 0 01 Indoor unit capacity demand code Amendatory capacity demand code The frequency after the capacity requirement transfer The frequency after the frequency limit The frequency of sending to 341 If the temp is lower than 0 degree the digital display tube will Indoor unit evaporator outlet temp T2 show O lf the temp is higher than 70 degree the digital display tube will show 70 If the temp is lower than 9 degree the digital display tube will T3 show 9 the temp is higher than 70 degree the digital Outdoor ambient temp T4 display tube will show 70 If the indoor unit is not connected the digital display tube will show The display value is between 30 120 degree If the temp is lower than 30 degree the digital display tube will show 30 If the temp is higher than 99 degree the digital display tube will Compressor discharge temp Tp show single digit and tens digit For example the digital display tube show 0 5 it means the compressor discharge temp is 105 degree the digital display tube show 1 6 it means the compressor discharge temp is 116 degree AD value of current AD value of current Tne display value is hex number AD value of voltage Indoor unit running mode code Outdoor
62. ion When compressor discharge temperature is higher than 115 the unit will stop and unit runs again when compressor discharge temperature is lower than 90 C P4 display Temperature protection of compressor discharge Check whether the compressor discharge temp Yes SEEN Yes Stop leaking and add refrigerant refrigerant is leak is more than 115 C No Check whether the wiring connection is right between compressor discharge temp No sensor and PCB according to wiring diagrams y Correct the wiring connection Yes Y Judge The discharge temp sensor is broken Method Check whether the resistance of compressor discharge temp sensor is right refer to the Appendix 2 NO v Replace the compressor discharge temp sensor Yes v Replace outdoor main board Trouble is solved Electrical Control System LFIS B 1211 2 4 4 15 P5 malfunction Troubleshooting When condenser high temp is more than 65 the unit will stop and unit runs again when outdoor pipe temp less than 52 P5 display High temperature protection of condenser Check whether the condenser temperature is more than 65 Y Judge 2 Check whether the heat exchanger is dirty NO Judge 3 Th
63. ion LFIS B 1211 Plug M More than 25mm J Water storage pipe 6 2 7 Lifting pipe setting of indoor unit with water pump gt length of lifting pipe should not exceed the pump head of indoor unit water pump Pump head of big four way cassette 750mm Pump head of compact four way cassette 500mm gt drainage pipe should be set down inclined after the lifting pipe immediately to avoid wrong operation of water level switch gt Refer the following picture for installation reference Indoor unit More than 50mm Hanger Down incline pipe A Length of vertical pipe lt 150mm B Lift heightSthe pump head of water pump Flexible 300mm 6 2 8 Blowhole setting Forthe concentrated drainage pipe system there should design a blowhole at the highest point of main pipe to ensure the condensate water discharge smoothly gt Theair outlet shall face down to prevent dirt entering pipe gt Each indoor unit of the system should be installed it gt installation should be considering the convenience for future cleaning Blowhole Indoor unit N Indoor unit Plug CN Plug ON 7 N
64. ity demand and resume till T2 7 C 1 3 2 5 Condenser high temperature T3 protection When T3265 for 3 seconds the compressor will shut off When T3 52 the compressor will restart 1 3 3 Heating Mode 1 3 2 1 Outdoor PMW open angle control The unit is working in heating mode with the EXV open 300P for 3 minutes then adjusting PMW open angle according to the temperature of compressor discharge every 2 minutes 1 3 3 2 Outdoor fan running rules DC FAN SSLOW SPD AD DC FAN SLOW SPD ADD DC FAN MIN SPD ADD DC FAN MID SPD ADD DC FAN HI SPD ADD 1 3 3 3 Indoor fan running rules When the compressor is on the indoor fan can be set to high med low auto And the anti cold wind function has the priority Auto fan action Electrical Control System 81 Electrical Control Function LFIS B 1211 T1 Ts 4 Medium 1 3 3 4 Defrosting mode For 24 36K models Condition of defrosting T3STempEnterDefrost ADD and lasts for 40 minutes Defrosting action 4 Way valve longer than 10min Compressor Indoor fan Outdoor fan PMV running 6 mins with 300P 480P TN PMV Condition of ending defrosting If any one of following items is satisfied defrosting will stop and the machine will turn to normal heating mode D T3 gt TempQuitDefrost ADD The defrosting time achieves 10min For 48K model Condition of
65. k whether th power supply line is connected correctly and tightly onnect it correctl and tightly check ok or not NO Yes NO Connect it well check ok or not connecting line of the compressor is connected correctly or tightly Check whether the lines in E part box are connected tightly Connect it tightly check ok or not Yes No Yes No eplace the IPM module check whether the system can work normally Check whether the bridge rectifiers are normal Use the multimeter to measure the resistance between each two terminals check whether there is the condition that value of resistance is 0 Yes No eplace the main board Yes check whether the system Yes Replace the bridge rectifiers can work normally Check whether the connecting line of every reactor is normal If the line is broken the resistance of the two ports No is for 18K 24K 30KBtu h Check whether the PFC module broken for 36K 48KBtu h eplace the compressor check whether the system Yes can work normally Replace the connecting line or reactor or replace the PFC module Yes Trouble is solved LFIS B 1211 Troubleshooting 2 4 4 17 P6 malfunction For three phases units At first test the resistance between every two ports of U V W of IPM and P N If any result of them is O or c
66. larm indicator Operation lamp Infrared signal receiver Temporary button Display digital tube 5 D MANUAL OPERATION TIMER DEFJFAN ALARM 2 1 3 Display board of Up down 4 way Panel Digital 88 Display P Check Button Running LED Timer LED Defrost LED Alarm LED 2 1 4 Display board of Ceiling floor indoor unit MANUAL OPERATION DEF FAN O Infrared signal receiver 88 Electrical Control System LFIS B 1211 Troubleshootin 2 2 Indoor unit malfunction Timer lamp Running lamp Defrosting lamp Alarm Display digital Malfunction lamp tube Communication malfunction between indoor and outdoor units Open or short circuit of T1 temperature sensor Open or short circuit of T2 temperature sensor Open or short circuit of T2B temperature sensor Full water malfunction Indoor EEPROM malfunction m m NO m CO m Im N PCB and up down panel PCB Communication malfunction between master unit and slave unit 3 Other malfunction of master unit or slave unit on X off sx flash at 5Hz O flash at 0 5Hz E N A NO en 2 3 Outdoor unit malfunction Electrical Control System 89 Troubleshooting 2 4 Solving steps for typical malfunction 2 4 1 For the indoor unit 2 4 1 1 Open or short circuit of temperature sensor Che
67. ler Board to the Wire Controller Back Cover which should be fixed first then press the other end of the Wire NOTE Never turn screws too tightly or else the cover would be dented or the Liquid Crystal breaks Please leave enough long cable for maintenance of the Wire Controller Board Electrical Control System 123
68. located Press this button with a needle of 1mm to cancel the current setting and reset remote controller LFIS B 1211 Controller 3 1 2 R51 E Remote Controller Specifications Reaching Distance 8m when using 3 0 voltage it can get 11m Environment Temperature Range 5 7 60 Introduction of Function Buttons Remote Controller SET TEMPERATURE AUTO TEMP UP Button FAN SPEED Button TIMER Button E CANCEL Button ECONOMIC Running button LOCK Button TEMP DOWN Button MODE select button SWING Button VENT Button ON OFF Button RESET Button 1 TEMP DOWN Button Push the TEMP DOWN button to decrease the indoor temperature setting or to adjust the timer in a counter clockwise direction 2 MODLE SELECT Button Each time you push the button a mode is selected in a sequence that goes from AUTO COOL DRY HEAT and FAN as the following figure indicates COOL DRY 9 HEAT only for Heat Pump 3 SWING Button Push this switch button to change the louver angle 4 RESET Button When the RESET button is pushed all of the current settings are cancelled and the control will return to the initial settings 5 ECONOMIC RUNNING Button Push this button to go into the Energy Saving operation mode 6 LOCK Button Push this button to lock in all the current settings To release settings push again 7 CANCEL Button Push this button to cancel the TIMER settings 8
69. lose to 0 the IPM is defective Otherwise please follow the procedure below P6 display module protection Check whether the voltage range of P N on IPM module is No normal 350 650V Check whether the input power supply is correct 380 415V 3N 50Hz Regulate it to correct then check whether the system can work normally Yes Y s Check whether the connecting line between main board and the IPM module is connected tightly Connect it tightly check ok or not heck whether th power supply line is connected correctly and tightly onnect it correctl and tightly check ok or not Yes No Check whether the connecting line of the compressor is connected correctly or tightly Connect it well check ok or not Check whether the lines in E part box are connected tightly Connect it tightly check ok or not NO Yes eplace the IPM module check whether the system can work normally Check whether the bridge rectifiers are normal Use the multimeter to measure the resistance between each two terminals check whether there is the condition that value of resistance is 0 Yes No eplace the main board Yes check whether the system Yes Replace the bridge rectifiers can wo
70. n Yes the up down panel an repower the indoor unit Connect a display board and turn on it can it start The indoor PCB is defective Change it The up down panel is defective Change it is solved Electrical Control System Troubleshooting 95 Troubleshooting 2 4 2 3 Up down panel is not closed F2 Displayed D The up down panel is not closed Lift the filter panel to close it Check if the filter panel of up down panel is closed Yes The up down panel is defective Change it is solved 96 LFIS B 1211 Electrical Control System LFIS B 1211 2 4 3 For the unit with TWINS function Troubleshooting 2 4 3 1 Communication failure between master unit and indoor unit F3 Displayed Communication failure between master unit and slave unit Check the dial switch settings of aster unit and slave unit is it right Yes Check the PQE communication wires connection is it good enough Yes One of the 2 indoor PCBs is defective Connect only one indoor unit to the outdoor unit separately The one caused E1 error code is defective 3 4 is solved Electrical Control System Correct the settings Correct the wire connections 97 Troubleshooting 2 4 4 For the outdoor unit 2 4 4 2 EO malfunction EO display Outdoor EEPROM m
71. nic leak detector Let the refrigerant out then use the high pressure nitrogen or refrigerant to blow pipe vacuumize and charge the refrigerant again LFIS B 1211 Electrical Control System LFIS B 1211 2 4 4 13 P3 malfunction P3 display Current protection of compressor Judge 1 Check whether the input current of the power supply wire is more than 20A For 36K amp 48K with 1 phase it is 30A Yes Check whether the refrigerant system is ok l Judge 2 Check whether the outdoor ambient temperature is higher than 50 Y Judge 3 Check whether the outdoor unit is bad ventilation NO y Judge 4 Check whether the heat exchanger is dirty No y Judge 5 The refrigerant pipe is blocked Replace outdoor main board and check whether Yes Stop the unit Yes Make the outdoor unit ventilate well Yes Clean the heat exchanger Yes Let the refrigerant out then use the high pressure nitrogen or refrigerant to blow pipe vacuumize and charge the refrigerant again the system can run normally No v Electrical Control System Replace the electric control box Yes Yes Trouble is solved Troubleshooting 109 110 Troubleshooting LFIS B 1211 2 4 4 14 malfunct
72. of control When Indoor Fan Speed keeps too low For 5 duct 300RPM For Super slim cassette 200RPM for 50s the unit will stop and the LED will display the failure Electrical Control System 79 Electrical Control Function LFIS B 1211 1 3 Operation Modes and Functions 1 3 1 Fan mode 1 Outdoor fan and compressor stop 2 Temperature setting function is disabled and no setting temperature is displayed 3 Indoor fan can be to high med low auto 7 NA NAN 4 The louver operates same as in cooling mode 5 Auto fan Jure qs 5 0 High 4 0 Medium 3 0 2 0 Low 15 24 1 3 2 Cooling Mode 1 3 2 1 Outdoor PMW open angle control The unit is working in cooling mode with the EXV open for 3 minutes then adjusting PMW open angle according to the temperature of compressor discharge every 2 minutes 1 3 2 2 Outdoor fan running rules DC FAN HI SPD ADD DC FAN MID SPD ADD DC FAN MIN SPD ADD DC FAN SLOW SPD ADD DC FAN SSLOW SPD ADD 1 3 2 3 Indoor fan running rules In cooling mode indoor fan runs all the time and the speed can be selected as high medium low and auto The auto fan 80 Electrical Control System LFIS B 1211 Electrical Control Function 11 15 High 4 0 Medium 3 0 2 0 Low 1 3 2 4 Evaporator low temperature T2 protection When T2 lt 2 Cand lasts for 3 minutes the indoor has no capac
73. over cooling extremely Therefore it is necessary to carry out insulation otherwise it shall debase the performance of unit and burn compressor gt Gas pipe temperature is very low during cooling If insulation is not enough it shall form dew and cause leakage gt Temperature of gas pipe is very high generally 50 100 C during heating Insulation work must be carried out to prevent hurt by carelessness touching 9 1 3 Insulation material selection for refrigerant pipe gt burning performance should over 120 C According to the local law to choose insulation materials gt thickness of insulation layer shall be above 10mm lf in hot or wet environment place the layer of insulation should be thicker accordingly 9 1 4 Installation highlights of insulation construction gt Gas pipe and liquid pipe shall be insulated separately if the gas pipe and liquid pipe were insulated together it will decrease the performance of air conditioner Liquid pipe Insulation meterial Gas pipe The insulation material at the joint pipe shall be 5 10cm longer than the gap of the insulation material The insulation material at the joint pipe shall be inserted into the gap of the insulation material The insulation material at the joint pipe shall be banded to the gap pipe and liquid pipe tightly The linking part should
74. p the wire together with the insulated pipe if necessary 5 2 10 Set the wall conduit 5 2 11 Set the supporter for the pipe Installation 65 Refrigerant pipe installation LFIS B 1211 5 2 12 Locate the pipe and fix it by supporter gt For horizontal refrigerant pipe the distance between supporters should not be exceed 1m gt For vertical refrigerant pipe the distance between supporters should not be exceed 1 5m 5 2 13 Connect the pipe to indoor unit and outdoor unit by using two spanners Be sure to use two spanners and proper torque to fasten the nut too large torque will damage the bellmouthing and too small torque may cause leakage Refer the following table for different pipe connection Pipe Diameter 1 4 6 35 144 176 1420 1720 3 8 9 52 333 407 3270 3990 1 2 12 7 504 616 4950 6030 5 8 15 9 630 770 6180 7540 3 4 19 990 1210 9270 11860 5 3 For Units with Twins Function 5 3 1 Length and drop height permitted of the refrigerant piping Note Reduced length of the branching tube is the 0 5m of the equivalent length of the pipe Outdoor unit BIZ il 5 amp 5 de 9 5 zm Indoor unit 5 L1 Su L 5 5 o I S 5 mo 5 8 qu The line branch pipe Sla o els i 1 5 L2 il n Note All used branch pipe must be produced by Midea otherwise it causes malfunction The indoor units should be inst
75. pply KUE 18HRDN1 QRC4 220 240V 197V 54 125 20 KUE 24HRDN1 QRC4 220 240V 197V 540 125 20 KUE 24HRFN1 QRC8 220 240V 197V 54 125 200 KUE 36HRFN1 QRC4 220 240V 197V 125 20 Remark MCA Min Current Amps A MFA Max Fuse Amps A 6 Sound Levels Air outlet side im 1m 0 Air outlet side 1 5m Microphone Ceiling Floor Noise level dB A KUE 18HRDN1 QRC4 KUE 24HRFN1 QRC8 KUE 36HRFN1 QRC4 68 7 s 38 Indoor Units LFIS B 1211 Duct Type 7 Accessories 1 Remote controller Remote controller amp Its 2 Remote controller holder li 1 holder Sd 5 Owner s manual 6 Installation manual i i 7 Remote controller manual 4 8 The Specification of Power Frequency and Voltage 220 240V 50Hz 220 240V 50Hz 220 240V 50Hz INDOOR UNIT POWER 1 220 240V 50Hz 220 240V 50Hz 380 420V 50Hz OUTDOOR UNIT POWER POWER WIRING imm mm 2 2 Indoor Outdoor Connecting Wiring Weak Electio Signal mi Indoor Outdoor Connecting Wiring Strong Electric Signal mm Indoor Units 39 Field Wiring LFIS B 1211 9 Field Wiring Air Condition Link Circuit 202042890198 INDOOR UNIT INDOOR UNIT Power supply 1 Phase 220 240v Use 3 core cable 3 2 5mm 2 for the models which with auxiliary electric heater PTE Power supply 1 Phase 220 2 40V 4 Use 3 core cable 3x2
76. ration Installation 51 Location selection LFIS B 1211 2 Location selection 2 1 Indoor unit location selection NO NO NO NO NONO VV NON ON The place shall easily support the indoor unit s weight The place can ensure the indoor unit installation and inspection The place can ensure the indoor unit horizontally installed The place shall allow easy water drainage The place shall easily connect with the outdoor unit The place where air circulation in the room should be good There should not be any heat source or steam near the unit There should not be any oil gas near the unit There should not be any corrosive gas near the unit There should not be any salty air neat the unit There should not be strong electromagnetic wave near the unit There should not be inflammable materials or gas near the unit There should not be strong voltage vibration 2 2 Outdoor unit location selection NONO NO NO NON VV ON 52 The place shall easily support the outdoor unit s weight Locate the outdoor unit as close to indoor unit as possible The piping length and height drop can not exceed the allowable value The place where the noise vibration and outlet air do not disturb the neighbors There is enough room for installation and maintenance The air outlet and the air inlet are not impeded and not face the strong wind is easy to install the connecting pipes and cables There is no danger of fire due to leaka
77. revent the components oxidizing pressure fluctuation and bad heat exchange during the operation of system 7 2 Selection of vacuum pump gt The ultimate vacuum degree of vacuum pump shall be 56mmHg or above gt Precision of vacuum pump shall reach 0 02mmHg or above 7 3 Operation procedure for vacuum drying Due to different construction environment two kinds of vacuum drying ways could be chosen namely ordinary vacuum drying and special vacuum drying 7 3 1 Ordinary vacuum drying 1 When conduct first vacuum drying connect pressure gauge to the infusing mouth of gas pipe and liquid pipe and keep vacuum pump running for 1hour vacuum degree of vacuum pump shall be reached 5b5bmmHg 2 vacuum degree of vacuum pump could not reach 55mmHg after 1 hour of drying it indicates that there is moisture or leakage in pipeline system and need to go on with drying for half an hour 3 If the vacuum degree of vacuum pump still could not reach 55mmHg after 1 5 hours of drying check whether there is leakage source 4 Leakage test After the vacuum degree reaches 755mmHg stop vacuum drying and keep the pressure for 1 hour If the indicator of vacuum gauge does not go up it is qualified If going up it indicates that there is moisture or leak source 7 3 2 Special vacuum drying The special vacuum drying method shall be adopted when 1 Finding moisture during flushing refrigerant pipe 2 Conducting construction on rainy day be
78. rk normally Check whether the 3300uF 400V electrolytic capacitor is normal No No eplace the compressor check whether the system can work normally Replace this electrolytic Yes capacitor Trouble is solved Electrical Control System 113 Troubleshooting 2 4 4 18 P7 malfunction P display High temperature protection of evaporator Whether compressor operates y Check whether the heat exchanger is dirty the air outlet is blocked and the indoor fan is running normal Clean the heat exchanger and the air outlet Gheck whether the indoor fan is running normal No Check refrigerant system such as clogging of capillary etc 114 Whether the connection is good Yes Check the esistance value of the sensor via Appendix 1 5 it normal Yes hether the indoor PCB is normal NO NO LFIS B 1211 Heconnect and retest Replace the temperature sensor the indoor PCB Electrical Control System LFIS B 1211 Troubleshooting Appendix 1 Temperature Sensor Resistance Value Table kom kom 115260 20 126431 235774 100 0620 73 19 108146 21 1205601 61 227249
79. rotector No Charge refrigerant Yes Replace the outdoor main PCB Whether abnormality is the same after gas charging Check refrigerant system such as clogging of capillary etc 106 Electrical Control System LFIS B 1211 2 4 4 11 P1 malfunction Only for 30K 60k P1 display High pressure protection Judge 1 Whether the wiring between the high pressure switch and main control board is connected well or correctly Yes Y Judge 2 Whether the high pressure protector is broken Method Short connect the high pressure protector Socket check whether the system can run normally NO Check whether the refrigerant system is ok Judge 3 Check whether the outdoor ambient temperature is higher than 50C NO Judge 4 Check whether the outdoor unit is bad ventilation Judge 5 Check whether the heat exchanger is dirty Judge 6 Check whether the refrigerant pipe is blocked Replace outdoor main board Electrical Control System Connect it well Yes Replace high pressure protector Yes Stop the unit Yes Make the outdoor unit ventilate well Yes Yes Clean the heat exchanger Let the refrigerant out then use the hi
80. s 0 15 16 31 32 47 48 63 POWER 53 74 90 105 140 160 175 Factory Setting Satine According to related model For Setting static pressure For temp compensation 1 gf Ore nA gh OF gk oF ON ENC2 5 1 SAS Ok swi SW6 E Td Frai aa 1 1 12 12 1 2 1 2 12 Swi Sw2 i e 0 1 2 3 4 Code 00 4 10 TYPE Code DO 01 10 11 static pressure 0 50 51 80 81 120 121 150 gt 150 28 30 en a 3C AC 6 According a 0 25 26 37 38 50 51 100 5400 2 30 32 nat stop e P Function actory Setting TE3 24 28 1C 4C 4 15 24 i FLOOR TYPE Wee we Factory FUNCTION SETTING 8 Seting For Setting Fan Motor Control 8 C AT O N then No Power Request For Setting Auto Restart For Setting Fan Quantity ON L SW2 SW3 SWA4 i 1 1 1 1 1 1 2 0207059073 7 Mode Fan OFF ON ON OFF Mod Fan Pan Factory Factory Factory Setting Setting Setting ___________________________________________________________________________________________________________________ Indoor Units 37 Duct LFIS B 1211 5 Electric Characteristics Indoor Units Power Su
81. sulation material 10 Engineering of electrical wiring 10 1 Highlights of electrical wiring installation 76 All field wiring construction should be finished by qualified electrician Air conditioning equipment should be grounded according to the local electrical regulations Current leakage protection switch should be installed Do not connect the power wire to the terminal of signal wire When power wire is parallel with signal wire put wires to their own wire tube and remain at least 300mm gap According to table in indoor part named the specification of the power to choose the wiring make sure the selected wiring not small than the date showing in the table Select different colors for different wire according to relevant regulations Do not use metal wire tube at the place with acid or alkali corrosion adopt plastic wire tube to replace it There must be not wire connect joint in the wire tube If joint is a must set a connection box at the place The wiring with different voltage should not be in one wire tube Ensure that the color of the wires of outdoor and the terminal No are same as those of indoor unit respectively Installation LFIS B 1211 Test operation 11 Test operation 11 1 The test operation must be carried out after the entire installation has been completed 11 2 Please confirm the following points before the test operation NN N NN VV WV The indoor
82. t pipe Drainpipe Fittings Out let pipe sheath Out let pipe clasp Remote controller amp Its Frame Remote controller amp Its Frame Remote controller manual EE Network wires Network wires Installation accessory Expansible hook s The product you have might not be provided the Installation hook a ratum One _ Beet Indoor Units 17 The Specification of Power LFIS B 1211 8 The Specification of Power Frequency and Voltage 220 240V 50Hz 220 240V 50H 220 240V 50H INDOOR UNIT POWER POWER WIRING Frequency and Voltage 220 240V 50Hz 220 240V 50Hz 380 420V 50Hz OUTDOOR UNIT POWER POWERWIRING ses 525 7 CIRCUIT BREAKER 40 Indoor Outdoor Connecting Wiring 805 Indoor Outdoor Connecting Wiring Strong Electric Signal mm x1 0 15 30 Weak Electric Signal mm door Units LFIS B 1211 Field Wiring 9 Field Wiring 202042890198 INDOOR UNIT INDOOR UNIT Power supply 1 Phase 220 240v Lise 3 core cable 3 2 5mm 2 for the models which with auxiliary electric heater se 3 cable 3x1 0mm 2 Power supply 1 Phase 220 240 NAA Use cable 3 2 5mm uae for the models which with auxiliary electric heater PTE Lise Score cable 31 0mm for the others 3 shielded cable 3 0 5mm 3 core shielded cable 3x 0 5mm Power supply 1 Phase 220 240 18K 30
83. t the desired up down air flow direction The louver changes 6 degree in angle for each press If keep pushing more than 2 seconds the louver will swing up and down automatically 5 HORIZ SWING Used to stop or start vertical louver movement 6 AIR DIRECTION Used to set the desired up down air flow direction The louver changes 6 degree in angle for each press 7 ON OFF For turning on or turning off the air conditioner _ 8 FAN SPEED Fan speed will be selected in following sequence once pressing this button AUTO LOW HIGH 9 TIME ON For time ON setting Once pressing this button the time will increase by 0 5 hour When the set time exceeds 10 hours pressing the button will increase the time by 1 hour Adjusting the figure to 0 00 will cancel time ON setting 10 ECO Activate or turn off economic operation mode It is suggested to turn on this function when sleeping Only available when remote controller is used with corresponding unit 11 TIME OFF For time OFF setting Once pressing this button the time will increase by 0 5 hour When the set time exceeds 10 hours pressing the button will increase the time by 1 hour B B Adjust the figure to 0 00 will cancel time ON setting 12 C H inner located Press this button with a needle of 1mm to shift the mode between Cooling only and Cooling amp Heating according to the feature of the machine 13 RESET inner
84. tatic pressure 0 50 51 80 81 120 121 150 gt 150 28 30 According DUCT TYPE AC According Middle static pressure 0 25 26 37 38 50 51 100 5100 30 42 do stop to n Factory Setting CEILING AND 24 28 4T 6c 4 15 24 Forse TES CEILING TYPE FLOOR CEILING FLOOR TYPE bid 6 30 32 WE 1 Fact FUNCTION SETTING 5 Sete For Setting Fan Motor Control D C AT then No Power Request For Setting Auto Restart For Setting Fan Quantity ON sw2 I SW3 SW4 u 1 1 1 1 1 1 2 2 0 7 5 9 T 3 Mode Fan OFF Mode OFF Mode pele Coube Factory Factory Factory i Setting Setting Setting 26 Indoor Units LFIS B 1211 Duct Type 5 Static Pressure 18 000Btu h 24 000Btu h Pa 90 EJ EE 80 ONIN a iar E E Sup er high speed o m T Super high speed 2 FENCE ERE REE 9 E 1 1 9 IEEE LI LM T qs g High speed D 9 gu Mid speed 5 Midspeed Y SENA 30 Low speed IESU
85. tdoor unit Model Compressor type Compressor Brand Matched indoor units KOU 18HFN1 QRC4 Rotary GMCC KTB 18HWFN1 QRC4 KUE 18HRDN1 QRC4 KCD 24HRFN1 QRC4 KOU 24HFN1 QRC4 Rotary GMCC KTB 24HWDN1 QRC4 KUE 24HRDN1 QRC4 KCD 24HRFN1 QRC8 MOU 36HFN1 QRC4 Scroll Mitsubishi KTB 36HWFN1 QRC4 KUE 36HRFN1 QRC4 MOU 36HFN1 RRC4 Scroll Mitsubishi KTB 36HWFN1 QRC4 KUE 36HRFN1 QRC4 2 General Information LFIS B 1211 External Appearance External Appearance 1 2 Indoor Units Super slim cassette 2 2 Outdoor Units Single fan outdoor unit General Information 3 Nomenclature Nomenclature 3 1 Indoor Unit MUB T 36HRD N1 H 3 2 Outdoor Unit MOU T 36 HD N1 R LFIS B 1211 Power Supply Q 220 240V 1N 50Hz R 380 420V 3N 50Hz N 220 230V 1N 60Hz D 220V 3N 60Hz 380 420V 3N 60Hz Refrigerant N1 R410A R22 D DC Inverter On Off F Full DC Control Mode W Wired Control E Electric Control M Mechanical Control R Remote Control Function Code C Cooling Only H Cooling amp Heating A Cooling amp Heating PTC Capacity 1000Btu h T Tropical Condition T1 Condition Designed Time A Time A Designed Time Designed B Time Designed D Time D Designed Product Category C Cassette Type V AHU Type T Duct Type F Console Type U Ceiling amp Floor Type H High Static Pressure Duct Type Midea Power Supply Q 220 240V
86. 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 1 3 6 7 The setting time is relative time 1 3 7 Economy function 1 3 7 1 The sleep function is available in cooling heating or auto mode 1 3 7 2 Operation process in sleep mode is as follow When cooling the setting temperature rises 1 be lower than 30 every one hour 2 hours later the setting temperature stops rising and the indoor fan 15 fixed at low speed When heating the setting temperature decreases 1 C be higher than 17 C every one hour 2 hours later the setting temperature stops rising and indoor fan is fixed at low speed Anti cold wind function has the priority 1 3 7 3 Operation time in sleep mode is 7 hours After 7 hours the AC quits this mode but doesn t turns off 1 3 7 4 Timer setting is available 1 3 8 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 1 3 9 Drain pump control For duct amp Cassette For 12k models Adopt the water level switch to control the a
87. tom Optional 1 3 Fresh air intake function gt Install one duct from the reserved fresh air intake to outdoor Continually inhale the fresh air to improve the quality of the indoor air fulfills air quality more healthy and comfortable 1 4 Easy maintenance Clean the filter Optional standard product without filter 15 easy to draw out the filter from the indoor unit for cleaning even the filter is installed in rear side or bottom side Indoor Units 21 Duct Type LFIS B 1211 d A g n nu W am c Replace the motor or centrifugal fan Remove the ventilated panel firstly Remove half of blower housing and take out the motor with centrifugal fan Directly remove two bolts and then replace the motor or centrifugal fan easily M M Ventilated Panel 1 1 5 Reserved remote on off and central control ports gt Reserved remote on off ports and central control ports can connect the cable of an on off controller or a central controller to realize remote on off control function or group control function p Remote on off ports Central control ports 1 6 Built in drain pump Optional gt Built in drain p
88. ula to calculate the charge volume Diameter of liquid pipe mm 6 35 9 52 12 7 V Additional refrigerant charge volume 9 L The length of the liquid pipe Note gt Hefrigerant may only be charged after performed the vacuum drying process Always use gloves and glasses to protect your hands and eyes during the charge work gt Use electronic scale or fluid infusion apparatus to weight refrigerant to be recharged Be sure to avoid extra refrigerant charged it may cause liquid hammer of the compressor or protections gt Use supplementing flexible pipe to connect refrigerant cylinder pressure gauge and outdoor unit And The refrigerant should be charged in liquid state Before recharging The air in the flexible pipe and manifold gauge should be exhausted After finished refrigerant recharge process check whether there is refrigerant leakage at the connection joint part Using gas leakage detector or soap water to detect Installation 73 Engineering of insulation LFIS B 1211 9 Engineering of insulation 9 1 Insulation of refrigerant pipe 9 1 1 Operational procedure of refrigerant pipe insulation Cut the suitable pipe insulation except joint section flare the pipe piping layout and connection vacuum drying insulate the joint parts 9 1 2 Purpose of refrigerant pipe insulation gt During operation temperature of gas pipe and liquid pipe shall be over heating or
89. ump can lift the water to 750mm upmost convenient to install drainage piping under most space condition 22 Indoor Units LFIS B 1211 Duct Type 750mm upmost 1 7 Built in display board gt standard indoor unit be controlled by wired controller gt Thereis display board with a receiver in the E box Move out the display and fix it in other place even in the distance of 10m The unit will realized remoter control gt wired controller and the display board can display the error code or production code when the chips detect some failure Wired Controller Standard Remote Controller Optional 1 8 Twins Combination The units can be installed as Twin systems one outdoor unit can connect with two indoor units The indoor units can be combined in any of the different available ratings Indoor Units 23 Duct LFIS B 1211 2 Dimensions

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