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3. Service Space - North American HVAC Products

1. 24K 36K 48K 92 92 275 Fresh air intake P X Ai 4 8 80 136 4 install hanger Do 680 Body 12 Gas side LL rz Liquid side 8 3 2 Wiring connection port rn so alt 9 4 E parts box 9 M lt N T Oy ak Ir ra 55 E TZ Dy B Oy Service hole for Dy a hi _ oy Test mouth amp Test cover draining pump 232 Drain hole pe SP 1 LB C A A I LAT 92 92 92 92 Panel Q Y U _ 950 _ men a Indoor Units 4 Service Space height Ceiling Indoor Units Service Space m Outlet Inlet Wiring Diagrams 5 Wiring Diagrams MCA2U 12HRFN1 M MCA2U 18HRFN1 M 202042390121 3 30 32 24 28 15 24 30 32 SELECTION A a br Ae in L
2. 12K 18K 07 x 5 5 e EN M AU 100 Refrigerant pipe hole optional E 1 1 Tj Hanging arm C Ceiling Installation for ceiling N B Floor Installation 7 4 N i Hanging arm i Floor kh 9 lt i uM 7 ie E 22s NS LO 5 N Y lt of JLo i JN E 5 e v Sh 100 N Indoor Units 42 24K 48K 2 240 Drain discharge port m lt 2 233 Wiring connection port Dimensions 217 ols 5 O gt To 2120 Freshairintake ___ Indoor Units Hanging arm Refrigerant pipe hole
3. p 570 B 232 Drain pipe 265 Fresh air intake E Wu Y en Wiring connection port 7 40 _ x l n X H Z M 647 50 Indoor Units Dimensions
4. m Air filter optional _ d air inlet from bottom side Note standard product without filter Unit mm Outline dimension mm Air outlet opening size Air return opening size SE ONSEN Size of refrigerant pipe Capacity KBtu h anger SEEN C o ro ss s vm s es ors am oo s o m sa vel s mee es os vo s o ess o son es soo 20 26 Indoor Units Service Space 3 Service Space Ensure enough space required for installation and maintenance 200mm or more 300mm or more 4 _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 27 Wiring Diagrams 4 Wiring Diagrams MTBU 12HRDN1 M MTBU 18HRDN1 M WIRING DIAGRAMCINDOOR UNIT i D 202052290088 T zm j sl L POWER SETTIHG INDOOR UNIT MAINBOARD
5. 700 800 900 1000 1100 1200 1300 1400 1500 1100 1200 1400 1600 1800 2000 2200 2400 Air volume m h Air volume m h Indoor Units 31 Static Pressure 48 000Btu h Pa 120 5 110 100 90 80 Super high speed 70 High speed 60 Mid speed Low speed 50 de 40 External static pressure Pa 10 1000 1300 1600 1900 2200 2500 2800 3100 Air volume m h 32 Indoor Units Electric Characteristics 6 Electric Characteristics Indoor Unit MTBU 12HRDN1 M Hz Voltage Min Max 208 230V 187V 253V MTBU 12HRDN1 M B 60 208 60 208 230 187v 253v 4 60 208 230 187v 253v 60 205 MTB 24HRFN1 MW 208 230V 187V 253V MTB 36HWFN1 M 208 230V 187V 253V 208 230V 187V 253V MTB 48HWFN1 M Indoor Units 33 Sound Level 7 Sound Level Concealed Duct Type Discharge Suction Duct Duct A 1 4m Microphone Noise level dB A Model 34 Indoor Units Accessories Soundproof insulation sheath Tubing amp Fittings Bi
6. Outdoor Unit Microphone ssl 1 0m Note H 0 5 height of outdoor unit TE 74 Outdoor Units Installation Installation Part 4 Installation 1 Installation 76 2 Location selection 77 3 Indoor unit installation 78 4 Outdoor unit installation Side Discharge Unit 95 5 Refrigerant pipe installation 97 6 Drainage pipe installation 98 7T Vacuum Drying and Leakage Checking 102 8 Additional refrigerant charge 103 9 Engineering of insulation 103 10 Engineering of electrical wiring 104 11 PN 105 75 Installation Procedure 1 Installation Procedure Indoor unit installation Outdoor unit installation location selection location selection Indoor unit installation Outdoor unit installation Refrigerant pipe installation and insulation Refrigerant pipe installation and insulation Drainage pipe installation and insulation Drainage pipe installation and insulation Vacuum dr
7. Plug Plug JT J EN Z J de M s b PS 6 2 9 The end of drainage pipe shall not contact with ground directly 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 2 2 2 3 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 Pump drainage mode Disconnect the plug of water level switch remove the cover of water test hole and slowly infuse about 2000 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 Z i Drain plug Power on 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 abo
8. mem ee 235 43 Service Space 3 Service Space 12K 18K 22 235mm 4 5 EN LO N N Z 24K 48K P 44 NNNNNNNNNNNNNNNNN 21000mm 21000mm Indoor Units 4 Wiring Diagrams MUBU 12HRFN1 M MUBU 18HRFN1 M MUE 24HRFN1 MW GRAM CINDOOR UNIT 30087 WIRING DIA 2020522 POWER SETTING Inner Driver DC Motor MOTOR DRIVER DLE TO WIRE CONTROLLER MUBU 12HRFN1 M B WIRING DIAGRAM INDOOR UNIT 202044090078 POWER FACTORY SETTING ACCORDING TO RELATED MODEL FOR TEMP COMPENSATION CODE According FACTORY SETTING FORANTI COLD WIND ENC1 DC MOTOR DRIVER MODLE AA sng uuo2 WID 91 25 TO WIRE CONTROLLER AUTO RESTART ACTIVE INACTIVE 2 Positive it NAAN FACTORY direction used for MOZ 12HFN1 MWOW model Opposite direction used for MOC 12HFN1 MVOW model CODE 0 15 16 9 32 47 48 63 peor seme x
9. INDOOR OUTDOOR 4 CHECK VALVE LIQUID SIDE Heating Model only 4 2 WAY VALVE _ Condenser 600009 temp sensor CAPILIARY TUBE HEAT EXCHANGE EVAPORATOR T1 Room temp T4 Ambient EXCHANGE sensor temp sensor CONDENSER T2 Evaporator temp sensor pow x GAS SIDE 4 v EXE v VALVE UN can 4 K lt gt SONUS PERI SIUE Compressor 1 5 Discharge temp sensor d lt COOLING HEATING MOC 12HFN1 MVOW MOF 18HFN1 MUOW MOG 24HFN1 MTOW INDOOR OUTDOOR Electronic LIQUID SIDE CAPILIARY TUBE expansion valve lt gt 2 WAY VALVE T3 Condenser temp sensor HEAT EXCHANGE EVAPORATOR T1 Room temp 4 Ambient EXCHANGE sensor temp sensor CONDENSER T2 Evaporator temp sensor p z GAS SIDE lt v NP 1 4 VALVE 3 WAY VALVE Accumulator E T5 Discharge SS temp sensor Compressor HEATING For MOF 18HFN1 MUOW MOG 24HFN1 MTOW there is accumulator 64 Outdoor Units Piping Diagrams MOU 24HFN1 M MOU 36HFN1 M MOU 48HFN1 M INDOOR OUTDOOR Electronic Dd 1060087 lt b 1 J AENA E NOR
10. 121 9 CONEY ONG I 149 Electrical Control System Electrical Control System 1 Electrical Control Function 1 1Definition 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 For 12K 18K units amp MOG 24HFN1 MTOW Compressor discharge temp 5 gt 115 for 5s compressor stops 108 lt T5 lt 115C decrease the frequency to the lower level every 3 minutes till F1 90 lt 75 lt 105 keep running at the current frequency T5 90 no limit for frequency For other units 1 102 C lt T5 lt 115 C decrease the frequency to the lower level every 2 minutes till to F1 5 gt 115 for 10 seconds the compressor will stop and restart till 5 lt 90 1 2 4 Sensor protection at open circuit and breaking disconnection 1 2 5 Indoor fan delayed open
11. ro Hanging arm 216 Drain pipe Dimensions Unit mm 53 54 Service Space 3 Service Space PL Dom 1000mm Iv Indoor Units Wiring Diagrams 4 Wiring Diagrams MFAU 12HRFN1 M FUNCTION OF SWITCHES WIRING DIAGRAM INDOOR UNIT CODE PART NAME CN1 CN20 P C BOARD SOCKETS INDOOR DC FAN MOTOR SWITCH BOARD ON ON ON ON 54102 51103 OFF OFF TEMP MO MU FAN SWITCH BOARD CN101 ve ee er Siwa q UPPER OUTLET SWING MOTOR 2 LOWER OUTLET SWING MOTOR 1 I I I I I I I I I I 1 1 1 1 I M I RTI ROOM TEMPERATURE Soe UNI xps RT2 PIPE TEMPERATURE T2B TEMPERATURE I XPI XPS CONNECTORS WG XS1 XS5 CONNECTORS gt 4 WAY TERMINAL J1 J2 JUMPER 1 1 1 I I I I l 1 1 1 I I I I 1 1 I I 1 TYPE_SELECTION SW1 ON THE MAIN CONTROL BOARD BLACK WHITE XS1 5 N M NOTICE
12. comm Bur Comm Bus Conrad ter awe a T oukaor Comm Bur Comm 1 2 IC ai 0 26 28 87 38 60 51 100 FUNCTION SETTING INDICATION 202070590737 46 Indoor Units Electric Characteristics 5 Electric Characteristics Model Indoor Units oqe MUBU 12HRFN1 M 60 208 230V 187V 253V MUBU IZHRENI WB 60 208230v MUBU I HRFNI M 208 2007 asv 6 0520 sem 29 MUE 24HRENI MW 60 ser 25v 60 29 208200v 187v 25v 6 Sound Levels SOS S AAA 3 o SSS i Microphone 1m 1 5m Z _ Air outlet side 1m Ceiling Floor Noise level dB A Model MUBU 12HRFN1 M MUBU 12HRFN1 M B MUBU 18HRFN1 P MUE 24HRFN1 MW MUE 36HRFN1 M MUE 48HRFN1 M MUE 2AHRENT M EN 1 Indoor Units 47 Accessories 7 Accessories 1 Remote controller Remote controller amp Its 2 Remote controller holder holder 5 5 Owner s manual 5 Owner s manual 8 The Sp
13. TEAPERATURE CORPENS ATE T 4 all Wo Auto PIPE ROL restart settii MATICE T ee ee 1 TEMPERATURE COMPENSATE AND ANTI GOLD AIR HAS BEEN SET BEFORE LEAVING THE FACTORY ANYONE MODIFY EXCEPT THE PERSON TO OUTDOOR UNIT MCA2U 12HRFN1 M B 202042390132 DISPLAY BOARD P TO WIRE cold air Factory setting udin TES TYPE SELECTION 7565 5 According CONTROLLER to the 56 xP TEMPERATURE COMPENSATE 2 4 Factory setting According to the EEPROM setting yen BLACK REMOTE SYN Mu Nez 00 0 TO OUTDOOR UNIT ON ON FUNCT I ON pen ves No Positive Opposite E e vm s direction FACTORY SETTING NOTE Positive direction used for MOZ 12HFN1 MWOW model Opposite direction used for MOC 12HFN1 MVOW model RT2 PIPE ROOM 16 NOTE The wiring diagram for explanation purpose only The actual shape of the components may be different WIRING DIAGRAM INDOOR UNIT CODE PART BOARD SOCKETS INDOOR ROTOR SWING MOTOR ROOM TEMPERATURE PIPE TEMPERATURE CONNECTORS 3S1 S6 CONNECTORS XTi 4 TERMINAL 1
14. 48 WITINQ 49 Indoor Units Features 1 Features 12K 18K 1 1 Two way installation gt rounded design of the ceiling and floor type air conditioner allows either ceiling or floor level installation Ceiling installation saves room space while floor installation helps prevent the loss of warm alr 1 2 Brief design gt Brief design that is suitable for any interior will not only give you cooling and heating performance but also upgrade your lifestyle 1 3 3D airflow gt Vertical air flow and horizontal airflow can be adjusted by remote controller the cooperation of the two airflow ways help to spread air comfortably throughout even a large room With these functions the whole room can be evenly air conditioned for both floor level and ceiling installation Mar Indoor Units 39 Features 1 4 Optional drainage pipe connection gt Both right side and left side drainage holes are available to avoid the space limitation for drainage pipe installation Make you more convenient during installation ten e e e 1 5 Five panels for optional 1 6 Convenience operating and easy maintenance gt Remote controller as standard wired controller for optional gt filter without screw fixed can be took out easily 1 7 Easy installation save working time gt The pipes can be connected from bottom back and right side makes the installation
15. 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 Installation 90 Indoor unit installation 3 5 Ceiling amp floor indoor unit installation 12K 18K 3 5 1 Service space for indoor unit 1000mm 35mm 3 5 2 Bolt pitch 1 Ceiling installation Drain point 12K 18K 907 200 2 Floor standing installation Hook Installation 91 Indoor unit installation 3 5 3 Install the pendant bolt 1 Ceiling installation Select the position of installation hooks according to the hook holes positions showed in upper picture Drill four holes of 212 45 50mm deep at the selected positions on the ceiling Then embed the expansible hooks fittings 3 5 4 Install the main body 1 Ceiling installation The only installation method for the unit with drain pump Remove the side board and the grille For models 48 and 60 do not remove the grille Side board Locate the hanging arm on the hanging screw bolt for some of the models 60 do not do this Prepare the mounting bolts on the unit 8 13 Screw nut Hanging screw bolt Washer INDOOR UNIT Hanging Mounting bolt max 40mm s
16. NINININ O O Rh O O gt O gt O gt O T O Mh N N NIO O N _ N N o A o o R o m 2 o ce ATA A ojo 2 o m 23 o 5 5 5 5 oo N mi 5 OSIS I A O OI OO IO O1 O OI OI O 5 5 aA OL O CO N cO O lt 5 05 15 i 146 Electrical Control System Troubleshooting Appendix 2 Unit C K Discharge temp sensor table sus zm sa a 355 ern 6 e WR 342 ar s 346 4s 24 s ms 3 4 5 s 6 1 335 25 19 1 333 gt ses 395 3 amp 6 125 294 _ m 19 26 _ NO NO N OO O O O O O gt O gt O O A cO O N N N 3 we amp s 9 5 fo 1 ws s 9 499 9 a s 4 E 9 5 _ vs 9 46 95 s s 3 sa s m 9 4 na 9 sm
17. Check whether the resistance of outdoor ambient temperature vic Replace outdoor ambient sensor T4 is wrong refer to the temperature sensor T4 Appendix 1 No Judge 3 Compressor discharge temp sensor T5 is malfunction Check whether the wiring of the compressor discharge temperature Yes Connect the wiring well sensor T5 is broken off No Check whether the resistance of compressor discharge temp sensor Yes T5 is wrong refer to the Appendix 2 No Replace outdoor main Replace compressor discharge temperature sensor T5 Electrical Control System 135 Troubleshooting 2 4 4 7 E5 malfunction Check whether the power voltage is normal Yes Y Measure whether outdoor terminal voltage is normal Yes v Measure whether the voltage between L and N is normal Yes Y Measure whether input voltage of bridge rectifier is normal refer to the Appendix 3 Yes Y Measure whether the voltage between P and N is normal Yes T Restart the unit when the power supply gets normal Check the wiring of power wires well or correctly Reconnect it well Check the wiring of L and N well or correctly No Reconnect it well Check the wiring of bridge rectifier well
18. Indoor Units ENTE CN15 Wiring Diagrams RED Reactor INDOOR UNIT MAINBOARD CN10A CN10A DAS 28428 Q D CN23 CN33 KBE OFF ALARM Remote Alarm Control H ENA CN2 YELLOW CN15 INDOOR UE MAINBOARD WHITE 4 CN3 CN26 Q D Eau I CN23 CN33 BIBI ION OFFI ALARM 2 BLACK YELLOW I Remote Alarm I Control H Output E OUTDOOR UNIT FOR TOOR POWER SUPPLY BLACK MIDDLE ES OUTDOOR UNIT FOR INDOOR POWER SUPPLY ads ee ee eee TO WIRE CONTROLLER AAN BLACK MIDDLE PIPE TEMP VV n ROOM TEMP 45 Wiring Diagrams MUE 24HRFN1 M MUE 36HRFN1 M MUE 48HRFN1 M 4 Cuter Driver Matar i 1 DCMOTOR DRIVER 1 CNTA En Ts N EW FAN i eel DISPLAY TOWIRE CN 10 CN10A BOARD CONTROLLER 1040 20 Jauu 26 4 T BLACK MIDDLE PIPE TEMP A CN13 1 T1 1 ROOM TEMP MOTOR I DRIVERMODLE E wasa 4311708 LN
19. 2 LOUT i MAIN BOARD RY2 4 01 HATI HEAT eee 1 EY y UHT ORLY PLEASE USE IELDED WIRE B aus Wiring Diagrams OUTDOOR AMBIEHT 4 TEMPERATURE SENSOR T8 CONDENSER TEPPERATURE SENSOR Ll SDE OR Je Ch ELEG RON IE ESPAIS VALVE 69 Wiring Diagrams MOG 24HFN1 MTOW 202038090851 OPTIONAL ELECTRONIC EXPANSIVE VALVE LOW PRESSURE PROTECT HIGH PRESSURE PROTECT L 4 OUTDOOR AMBIENT N M JTA TEMPERATURE SENSOR EH N12 114 Si N OUT QD CompTop LOW HIGH 5 _____ 13 CONDENSER L OUT PM BOARD DISCHARGE SENSOR ON 4 MAIN BOARD TEMPERATURE SENSOR 4 WAY HEATL S 3 M OCO OL pue REACTOR q Ws RED U R 91 9 9 9 9 L1 COMPRESSOR BEE OPTIONAL OPTIONAL YIG l S LA 12 TO INDOOR UNIT POWER SUPPLY TO Outdoor Units Wiring Diagrams MOU 36HFN1 M 202075590585 CODE PART NAME COMP COMPRESSOR AC CURRENT DETECTOR ELECTRIC EXPANSIVE OUTDOOR FAN MOTOR HEATER CRANKCASE HEATING HIGH PRESSURE SWITCH 3 CORE SHIELDED WIRE TO INDOOR COMM BUS NOTE PLEASE USE NOTE Four way valve PFC INDUCTOR isused inthe LOW PR
20. N 14 11 CNS CH26 4 MIDDLE PIPE TEMP r quom T CN23 CN33 4 aor ve nuorive FACTORY ALARM Remote Alarm Control Output i OUTDOOR UNIT TO OUTDOOR UNIT L OUTDOOR POWER SUPPLY FOR INDOOR POWER SUPPLY Lamme eene ee en el WIRING DIAGRAM INDOOR UNIT TOWIRE 202070190064 PD L INDOOR UNIT FOR TEMP COMPENSATION MAINBOARD According ONTA ENTIS TT FACTORY to 1 SETTING E Function i FORANTI COLD WIND NEWFAN sng uuuoo WII OL 10 DISPLAY TO WIRE CN10 CN10A BOARD CONTROLLER According CN6 to FUNCTION KT LAOS CN3 CN26 k 4 BLACK MIDDLE PIPE TEMP ACTIVE ISW3 aromes active D H 9 gt SW2 WAY VALVE CN23 7 SS ROOM TEM PEP NOT E Positive direction used for MOZ 12HFN1 MWOW model lON OFF Opposite direction used for MOC 12HFN1 MVOW model CN2 CN41 BLACK YELLOW CODE Remote Alarm 16 31 Control Output FACTORY N 28 Indoor Units MTB 24HRFN1 MW WIRING DIAGRAM INDOOR UNIT TRAN 202052290087 DC Motor POWER SETTING DC MOTOR
21. w ne 9 3e A _ cO NO aaa a OO O O cO Electrical Control System 147 Troubleshooting Appendix 3 208 240V 1 phase 3 phase 380 420V 3 phase In operation With passive With partial active With fully active module PFC module PFC module gt 200VDC gt 310VDC gt 370VDC gt 450VDC Appendix 4 10 11 12 13 14 15 16 17 48 19 20 21 22 F 48 50 52 54 56 58 60 62 64 66 68 70 72 C 23 24 25 26 27 28 29 30 31 32 33 34 35 F 74 76 78 80 82 84 86 88 90 92 94 96 98 148 Electrical Control System Controller 3 Controller 3 1Wireless Remote Controller 3 1 1 RGO5F2 BGEU1 1 2 9 FAN SPEED 40 T 2 B A k 14 5 7 r3 46 8 General Function for wireless remote controller RGO5F2 BGEU1 Operation condition 23 F 140 F 5 60 C Electrical Control System 149 Controller Buttons and functions 1 ON OFF Button Push this button to start the unit operation Push the button again to stop the unit operation 2 MODE Once pressing running mode will be selected in the following sequence tes etek ee Q AS NOTE No heating mode for cool only type unit 3 SLEEP Button Active Disable sleep function It can maintain the most comfortable temperature and save energy This function is available on COOL HEAT or AUTO m
22. Comm Bis Il Control To outdoor For Setting NETaddreas nnn oas sear 2846 ee m 4 1 T _ 32 INDICATION 202070590737 indoor Units Static Pressure 5 Static Pressure 12 000Btu h 18 000Btu h Pa Pa 90 90 80 80 70 60 50 40 Sl Super high speed N X N gt High speed 20 speed 25 N Lowspeed NES Low speed External static pressure Pa External static pressure Pa 2 i 300 400 500 600 700 800 900 20 20522400 1508 ms Ben Air volume m h Air volume m h 24 000Btu h 36 000Btu h Pa 90 90 80 80 70 70 Super high speed Super high speed N P N 1 60 A aN N E N High speed 50 50 i speed Mid speed 40 40 External static pressure Pa External static pressure Pa _ Mid speed 30 30 Low speed _ Low speed pere 10 10
23. a XT1 7 ecc WN RRR RR 05 NOTE PLEASE 3 CORE SHIELDED WIRE POWER SUPPLY NOTE FOR NORTH AMERICAN ONLY Outdoor Units 71 Electric Characteristics 5 Electric Characteristics Outdoor Unit Model MOC 12HFN1 MSOW 208 230V 187V 253V MOC 12HFN1 MVOW MOZ 12HFN1 MWOW 208 230V 187V 253V NN Note MFA Max Fuse Amps A mew ww ___ av mew ww _____ ss MOF 18HFN1 MSOW 208 230V 187V 253V 72 Outdoor Units Operation Limits 6 Operation Limits Cooling operation Heating operation Drying operation Room temperature 14 4932 C 0 C 30 Ad Ces 32 G 15 C 50 C For 15 C 24 C Outdoor temperature the models with low temperature cooling system CAUTION 1 If the air conditioner is used beyond the above conditions certain safety protection features may come 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 Outdoor Units 73 Sound Levels 7 Sound Levels
24. 96 Installation 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 2 2 10m 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 y zi gt gt gt Lean Crude Burr Z Z 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 flare nut into the pipe before flaring the pipe gt According to the following table to flare the pipe Flare dimension A mm Pipe diameter Flare shape 90734 id TS S es ii u li i i 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 wrap the wire together with the insulated
25. EXPANSIVE L 3 6 5 202037490492 COMPRESSOR YIG CN50 51 DISCHARGE SENSOR AMBIENT HEAT EXCHANGER N SENSOR SENSOR BLACK E WHITE SZ OPTIONAL OLP TEMP SENSOR hie EK E CN 41 CN 40 CN43 MAIN BOARD CN 22 CN20 BLACK BLACK 36 REACTOR 1005 R20035 OUTDOOR FAN OUTDOOR WIRING DIAGRAM Outdoor Units Wiring Diagrams TO INDOOR UNIT POWER SUPPLY EE eet valve 1 is used in the Cooling amp Heating unit only 67 MOC 12HFN1 MSOW MOF 18HFN1 MSOW MOF 18HFN1 MUOW 68 RR RETLEN TEMP 202037830705 OPTIONAL EXPRNSHEURLIE eoi E P Hh COMPRESSOR a OPTIONAL HEATER ens HEATER 2 ATER 2 mE ORANGE OUTDOOR WIRING DIAGRAM AMBIENT SENSOR ae a SENS OR DISCHARGE SENSOR OLP TEMP SENS OR ex ENT G BROWN CH 26 CH 24 OO CHZB YELLOW Ine actor 86025 ORANGE OPTIONAL mm rere ret Li L2 L1 L2 eremre POWER SUPPL Y 2 5 D INDOOR UNIT OUTDOOR FAN Outdoor Units MOU 24HFN1 M 202075390587 URI COMPRESSOR Outdoor Units SUPPLY HBH PRESSURE PROTECT
26. The wiring diagram is for explanation purpose only The actual shape of the components may be different WIRING DIAGRAM INDOOR UNIT ror qm m Dm CE om omnes _ Cn am ew reac NOTICE 1 The TYPE_SELECTION TEMPERATURE COMPENSATE AND ANTI COLD AIR HAS BEEN SET BEFORE LEAVING THE FACTORY ANYONE CAN T MODIFY IT EXCEPT THE MAINTE NANCE PERSON Indoor Units Wiring Diagrams MCD 24HRFN1 M MCD 36HRFN1 M MCD 48HRFN1 M WI RI NG D IAG RAM 77 Y DISPLAY TO WIRE INDOOR UNIT mn 202042590 19 1 EEN Sn 4 53007 Z 0HP TE 8 15 31 18 63 as EE 9 2 STATE Factor Jc ttig CNG GN RED RED BROWN Ru 1 BLUE HEE awa Vor T aW a El ZS 5 2 ram gt N TES 30 m I WIRE TES 24 Outdoor Unit Vom CON TROLLER LE El melin AAT To SWING OUTDOOR COMM BUS COMM BUS Ted 5 DOWN BOARD Bw wa MCD 24HRFN1 MW 202042590200 FUNCTION OF SWITCH CONTROLLER WITCH FOR POWER 07 m ON q il NUMBE POWER oM D JB 4 4000W 5300W 2 MODE REMEMBER NO_REMEMBER
27. Kom Kom NO A O gt zx oer a 120 or 2229 101 oeme 2 6 2497 102 ar 938 2424 6 ese 24 ea 2072 1 950 as 25 1000 65 105 9546 79300 26 9504 66 1867 9892 94245 sr osme 2 701658 25 ee 108 9499 a 66 0898 8356 69 17047 109 3e 70 teen __ rean 1908 n 94907 32 72944 72 94469 692 042082 Ls 668355 1448 na 9494 3 75 ns omea 36 76 9400 sr sens 7 120 147 osn 398239 3 seen oss 39 79 12 0 osos ven swa 0859 0208 see oem 1 0 26008 3008 ss _ 193 s 9 97573 1 ens ss 28 o orme 0242 1848 se 27323 136 92946 sr 2662 sr 43 929 se oe 028 3261 se 24467 9 0692
28. 45 50mm deep at the selected positions on the ceiling Then embed the expansible hooks fittings 78 Installation Indoor unit installation Face the concave side of the installation hooks toward the expansible hooks Determine the length of the installation hooks from the height of ceiling then cut off the unnecessary part If the ceiling is extremely high please determine the length of the installation hook depending on the real situation 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 51 SSS Colourless EL Horizontal trans parent pipe indicator 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 Body H ceiling height Ceiling Locate the air conditioner firmly by wrenching the nuts after having adjusted the body s position well Installation 79 Indoor unit installation 3 1 5 Install the panel Remove the grille Drain side Please operate according Bolt washer to the direction of the arrow or it can not be disassembled when it is necessary Tighten the screws unde
29. LI L an Ln mm LI IL LI 1 aE i LII IL L 88 21000mm Installation Indoor unit installation 3 4 3 Install the pendant bolt 1 Ceiling installation Select the position of installation hooks according to the hook holes positions showed in upper picture Drill four holes of 212 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 LI IL IL IL LL LL LJ mmi m m LI LI LL II Ll ae I LT an IL T IL IL IL LI I ae a L1 LA 3 4 4 Install the main body 1 Ceiling installation The only installation method for the unit with drain pump Remove the side board and the grille Hanging Hanging arm screw bolt x l vi BE Grille Locate the hanging arm on the hanging screw bolt Prepare the mounting bolts on the unit Installation 89 Indoor unit installation Screw nut 20 25 Washer Hanging screw bolt Put the side panels and grilles back D Connecting point of refrigerant pipe D gas side E Connecting point of refrigerant pipe E Liquid side MMMM
30. gt 4 2 WAY VALVE T3 Condenser temp sensor HEAT EXCHANGE EVAPORATOR V HEAT T2 Evaporator 0 1 Room temp EXCHANGE temp sensor sensor temp sensor CONDENSER middle FO T2B Evaporator temp sensor outlet LE x GAS SIDE lt JA A J VALVE 3 WAY VALVE Accumulator High pressure _ switch 5 Discharge Low pressure temp sensor switch KC NE Compressor SOENS 4 For 24 1 there are no high pressure switch and low pressure switch Outdoor Units 65 Wiring Diagrams 4 Wiring Diagrams MOC 12HFN1 MVOW OPT IONAL HEAT EXCHANGER 202037590983 EPASMEWVE AMBIENT SENSOR DISCHARGE SENSOR L j SENSOR Q 6 58 OLP TEMP SENSOR 1 212 Sr OPTIONAL Note according to EBEN E different terminals WHITE BLACK can be connected 46986 in different ways CN 103 S YELLOW 9 d de U 2 RED 3 COMPRESSOR YIG OUTDOOR MAIN PCB CN 400 CN10 CN 11 CN9 CN8 QiOl Dpoooo OPTIONAL 5 HEATER w REACTOR FAN R1005 R20035 OPTIONAL OUTDOOR WIRING DIAGRAM HEATER 2 HEATER 1 66 Outdoor Units MOZ 12HFN1 MWOW OPTIONAL
31. FACTORY SETTING ACCORDING TO RELATED MODEL FOR TEMP COMPENSATION According SETTING NV Function FORANTI COLD WIND sng OL sng uuo WII OL 3 AUTO RESTART ACTIVE INACTIVE FAN MOTOR SW2 CONTROL THEN FAN NO POWER OFF REQUEST ON FACTORY me v 0 15 16 5 32 47 48 63 Indoor Units CN15 Wiring Diagrams INDOOR UNIT MAINBOARD pm 23 I CN33 BIBI BIB 1 ALARM Remote Alarm Control Output L L N CN14 CN11 i NEWFAN DISPLAY TO WIRE CN10 CN10A BOARD CONTROLLER CN6 x 595 BLACK MIDDLE PIPE TEMP CN3 CN26 VV KES n ROOM TEMP 29 Wiring Diagrams MTB 24HRFN1 M MTB 36HWFN1 M MTB 48HWFN1 M RI Outer Driver Motor INDOOR UNIT MAINBOARD POWER SETTING s 7 8 9 A B MOTOR DRIVER MODLE Model 53 74 166 140 ide According te related model eiling Floor vane ag WIRE CONTROLLER Je1op IBAN g Ja uu BLACK MIDDLE PIPE TEMP 13 SRM Lein Le DRIVER MODLE q l q Ip poe ned OUTER 431104 IN JHM Ol Outer Driver een Teorkoor Remote DC Motor
32. No normal Yes Y Replace the outdoor main PCB Power on Is the error extinguished No Replace the indoor main PCB 132 No Check the indoor wiring connection Yes Replace the indoor main PCB Power on Is the error extinguished No Y Replace the outdoor main PCB Electrical Control System Troubleshooting 2 4 4 4 E2 malfunction For other units E2 display Communication malfunction between indoor and outdoor units Power off then restart the unit 2 minutes later Yes Y Check whether there s any interference Remove interference or Such as too many lamps power add magnet ring on power transformers Or the signal wire wire is too long Adopt shield cable Shield cable earthing Check whether the wire is correct polarity P to P Q to Q Correct the connection E to E Check whether the signal wire is shield cable or whether the shield cable is earthing 2 Yes Yes Y Check whether the signal wire Yes Replace the signal wire Y Check whether the signal wires insert on PCB well No out and insert back Yes Replace indoor main PCB is the error distinguished No Replace the outdoor Main PCB Electrical Control System 13
33. 1 THE TYPE SELECTION AND MO MU HAS BEEN SET BEFORE LEAVING THE FACTORY ANYONE CAN T MODIFY IT EXCEPT THE MAINTENANCE PERSON THE STRONGEST LEVEL OF ili AIR FLOW RATE THE SECOND STRONGEST PIPE ROOM LEVEL OF AIR FLOW RATE FACTORY SETTING NET MODULE KERR US nl 1 TO CCM POWER SUPPLY SRS CN20 I SM ON TO OUTDOOR UNIT RESTAR NO NOTE PLEASE USE l PLEASE CUT OFF THE JUMPER J1 IF YOU CONNECT 3 CORE SHIELDED WIRE NOTICE 4 53 LAND BIGGER TYPE ADOPT THIS CONNECTION METHOD 3 PLEASE CUT OFF THE JUMPER J2 IF YOU WANT TO HAVE THE TERMAL FUNCTION FUNCTION OF SWITCHES TO WIRE CONTROLLER WIRING DIAGRAM INDOOR UNIT a TYPE_SELECTION SW1 ON THE MAIN CONTROL BOARD BLACK WHITE XS3 xs VN wiv VN M XP3 54 MO MU FAN EFFECTIVE IN POWERFUL MODE RT2 H oo AIR FLOW RATE w 2 5 eee XT1 1 THE SELECTION AND MO MU HAS BEEN SET BEFORE LEAVING THE FACTORY ANYONE CAN T MODIFY EXCEPT THE MAINTENANCE PERSON 4 4 aI THE SECOND STRONGEST PIPE ROOM FACTORY SETTING F LEVEL OF AIR FLOW RATE FACTORY SETTING NET MODULE TO CCM POWER SUPPLY CN20 TO OUTDOOR UNIT 2 I PLEASE CUT OFF THE JUMPER J1
34. 220P adjustment range is 80 480p The unit starts to work for 3 minutes then adjusting open angle according to the temperature of compressor discharge every 2 minutes For MOG 24HFN1 MTOW 1 EXV will be fully closed when turning on the power Then EXV will be standby with 480P open and will 108 Electrical Control System Electrical Control Function open to target angle after compressor starts 2 EXV will close with 160P when compressor stops Then EXV will be standby with 480P open and will open to target angle after compressor starts 3 The initial open angle of EXV is 140P adjustment range is 80 480p The unit starts to work for 3 minutes then adjusting open angle according to the temperature of compressor discharge every 2 minutes For other models 1 EXV will be fully closed when turning on the power Then EXV will be standby with 300P open and will open to target angle after compressor starts 2 EXV will close with 160P when compressor stops Then EXV will be standby with 300P open and will open to target angle after compressor starts 3 The initial open angle of EXV is 300P The unit starts to work for 3 minutes then adjusting open angle according to the temperature of compressor discharge every 2 minutes 1 3 2 2 Outdoor fan running rules For MOC 12HFN1 MSOW MOC 12HFN1 MVOW MOZ 12HFN1 MWOW MOF 18HFN1 MSOW MOF 18HFN1 MUOW MOG 24HFN1 MTOW High 28 26 ES 22 _ Medium 20 Low Y For other mode
35. 48 C For other units T2 gt 60 C 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 C In auto mode the machine will choose cooling heating or fan only mode according to AT AT T1 Ts For 12K 18K units MUE 24HRFN1 MW MTB 24HRFN1 MW MCD 24HRFN1 MW For other units 116 Electrical Control System Electrical Control Function 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 1 If the setting temperature is modified the machine will choose running function again 1 3 5 Drying mode For 12K 18K units MUE 24HRFN1 MW MTB 24HRFN1 MW MCD 24HRFN1 MW 1 3 5 1 Indoor fan speed is fixed at low and can t be changed The louver angle is the same as in cooling mode 1 3 5 2 Low indoor room temperature protection In drying mode if room temperature is lower than 10 the compressor will stop and not resume until room temperature exceeds 12 1 3 5 3 Evaporator anti freezing protection condenser high temperature protection and outdoor unit frequency limit are active and the same as that in cooling mode 1 3 5 4 The outdoor fan operates the same as in cooling mode For other units Drying mode works the s
36. IF YOU RESTART N YES i CONNECT THE NET MODULE NOTICE 4 53 AND BIGGER ADOPT NOTICE 3 TO HAVE THE TERMAL FUNCTION Indoor Units 55 Electric Characteristics 5 Electric Characteristics indoor Unit MFAU 12HRFN1 M 60 208 230 187V 253V MFAU 12HREN1 M B 60 208 230V 187V 253V 56 Indoor Units 6 Sound Levels Indoor Units 1m Microphone 1 5m Model MFAU 12HRFN1 M MFAU 12HRFN1 M B Noise level dB A Sound Levels 5 Accessories 7 Accessories Installation fittings Mounting screw ST2 9x10 C H Alkaline dry batteries AM4 Installation manual Owner s manual Shap 0 Er anu Remote controller 8 The Specification of Power MFAU 12 M B Phase 00 si 4 si Vene Circuit Breaker Fuse 20406 _ Indoor Unit Power Wiring mm Lm Indoor Outdoor Connecting Wiring Wiring Strong Electric 4 1 5 Signal Weak Electric Signal 58 Indoor Units Field Wiring 9 Field Wiring MFAU 12HRFN1 M MFAU 12HRFN1 M B Air Condition Link Circuit INDOOR UNIT Use 4 cable 16AWG 2 2 I Power supply Ll Use 3 core cable 14AWG Indoor Units 59 Outdoor Units 60 Part 3 Outdoor Units gt DIMENSIONS
37. 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 cassette Adopt the water level switch to control the action 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 dehumidifying 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 1 3 10 Point Check Function Excluding 12K amp 18K units amp MOG 24HFN1 MTOW There is a check switch in outdoor PCB 118 Electrical Control System Electrical Control Function 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 fl
38. cassette 24 48 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 Icon explanation on indoor display board Compact cassette 12 18 Infrared signal receiver Temporary button Operation lamp _ Timer indicator Alarm indicator PRE DEF indicator cooling and heating type or fan only indicator cooling only type 2 1 3 Icon explanation on indoor display board Ceiling amp Floor 12K 18K 10 Operation lamp OPERATION CD TIMER B O DEF FAN i indicator cooling and heating I pe or fan only indicator cooling only type Timer indicator Alarm indicator Temporary button Infrared signal receiver 2 1 4 Icon explanation on indoor display board Ceiling amp Floor 24K 48K MANUAL OPERATION TIMER DEF FAN ALARM Infrared signal receiver Electrical Control System 121 Troubleshooting 2 1 5 Icon explanation on indoor display board A5 Duct PRE DEF indicator cooling and heating type or fan only indicator cooling only type Timer indicator Alarm indicator Operation lamp n Infrared signal receiver Temporary button Display digital tube 2 UO MANUAL OPERATION TIMER DEF FAN ALARM IL 2 1 6 Icon explanation on in
39. 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 of control When Indoor Fan Speed keeps too low for 50s the unit will stop and the LED will display the failure Electrical Control System 107 Electrical Control Function 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 set to high med low auto 4 The louver operates same as in cooling mode 5 Auto fan For 12 18K units MUE 24HRFN1 MW MTB 24HRFN1 MW MCD 24HRFN1 MW TISS 4 3 5 High 3 0 Medium 1 5 7 10 Y Low Ts 24 For other units 1 4 5 0 High 4 0 x Medium 3 0 gt 2 0 Low Ts 24 1 3 2 Cooling Mode 1 3 2 1 Electronic Expansion Valve EXV Control Excluding MOC 12HFN1 MSOW MOF 18HFN1 MSOW For MOC 12HFN1 MVOW MOZ 12HFN1 MWOW MOF 18HFN1 MUOW 1 EXV will be fully closed when turning on the power Then EXV will be standby with 480P open and will open to target angle after compressor starts 2 EXV will close with 160P when compressor stops Then EXV will be standby with 480P open and will open to target angle after compressor starts 3 The initial open angle of EXV is
40. gt In general the supporter gap of the drainage pipe horizontal pipe and vertical pipe is respectively 1m 71 5m and 1 5m 2 0m gt Each vertical pipe shall be equipped with not less than two hangers gt 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 Pramage pipe Drainage pipe Drain tee SE CES Water flow Water flow Water flow Water flow Water flow Drain tee Drain tee NSIGETISW water flow Qe Water flow Water flow Installation 99 Drainage pipe installation Branch pipe Water flow Gas Gas 2 P 44 N Water flow lt 2 A lt 2 Z d ON Keep a certain degree J gt Main pipe X 5 y Branch pipe lt gt correct installation will not cause converse water flow and the slope of the branch pipes be adjusted freely gt false installation will cause converse water flow and the slope of the branch pipe cannot 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 w
41. lt lt lt lt lt o 52 55 55 95 5 55 95 55 t lt 55 cece lt lt 55 SS Oe 55 2550 50500 0 OOS 59 000 SEK KEE 460500 IK IS 555555550 250505 205 xX lt gt lt lt 2 x 2000002 n lt lt n lt s 3 5 06046 2 lt lt lt n 2 52 552 2 550 lt lt 550 oS XX 22 2 5 2 lt 50 5 20 0 5 55 2 50 0 5 lt lt x 52 XX 0604 5 502 5 502 5 xx i 24 20 0 5 KOA 5 25 05050 0 RRR KR RIK 555555550 52 UJ Ru m 4 install hanger H1 Liquid side E No m S 25 Drain _ Gas side Mi nai 5 is Test mouth amp Test cover h 29 Drain pipe E De D m 225 Drain connecting pipe T for pump po 28 Electric control box x Fresh air intake
42. of Power 9 The Specification of Power MCA2U 12HRFN1 M Model MCA2U 12HRFN1 M B MCD 24HRFN1 MW MCA2U 18HRFN1 M Power Frequency and Voltage 208 230V 60Hz 208 230V 60Hz Indoor Unit Power Wiring mm Igoor Unit Power win 20 Indoor Units Field Wiring 10 Field Wiring MCA2U 12HRFN1 M MCA2U 12HRFN1 M B MCA2U 18HRFN1 M MCD 24HRFN1 MW Air Condition Link Circuit INDOOR UNIT Use 4 cable 2 gt Power supply LJ Use 3 care cable 145v MCD 24HRFN1 M MCD 36HRFN1 M MCD 48HRFN1 M 202070590697 INDOOR UNIT Use 3 core cable 16AWG To Power supply Use 3 core cable 12AWG Air Condition Link Circuit Indoor Units 21 Duct 22 Duct Type FEATURES jS 23 2 DIINGIISIQISu 26 3 Service Space J 27 4 Wiring Diagram s 28 9 PTeSSDBIGu eenen 31 6 Electric Characteristics 33 SOU Level uu uuu ll lalu usus pagay 34 E 35 9 The Specification of Power 36 FIGIG WINN O 37 Indoor Units Features 1 Features 1 1 Installation accessories Optional gt Front Board Canvas Ai
43. of electrical wiring 10 1 Highlights of electrical wiring installation 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 gt Select different colors for different wire according to relevant regulations VV vvv 104 Installation Test operation 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 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 VV VV VV VV YV V The indoor unit and outdoor unit are installed properly Tubing
44. orsa 61 e CTV ICE SPIC Oera 63 PIPING DIAJ aM S ciaisensis 64 Wiring Diagrams 66 Electric Characteristics 72 Operation LIMES s cusan 73 Sound 2 2222222 74 Outdoor Units 1 Dimensions re gt 1 oce Ts ATR 1 N Es P 1 L MU 4 NC 4 L N N N L d LZ NN N L a NN ll N L d Ll P L r L AL IU a Ald LL ILU Lo Z AL Jib o L I J T 7 WN ZZ LL NN NX d ZZ 4 1 N 3 LLC __ 122 4 SS ea mm MOC 12HFN1 MSOW MOC 12HFN1 MVOW MOZ 12HFN1 MWOW MOF 18HFN1 MSOW MOF 18
45. reprogrammed using a pulsed voltage 2 4 1 4 Water level alarm malfunction Power off then restart the unit 2 minutes later Is it still displaying the error code Yes If the water level switch is inserted well No Insert the water level switch well Yes If the water level switch is broken Yes gt Replace the water level switch No EE III Replace the water pump If malfunction 15 still not solved Yes Replace the indoor main PCB Electrical Control System 127 Troubleshooting 2 4 1 5 Indoor fan Speed has been out of control Only for the units used DC motor No gt The unit operates normally Power off then restart the unit 2 minutes later Is it still displaying the error code Yes Find out the cause and have it solved For No 3 example whether the fan is blocked or the screws which fix the fan are tighten Shut off the power supply rotate the fan by hand Does it rotate properly Yes Check the wiring of fan motor Are all the No Correct the connections connections good Yes Check whether the main PCB is normal through index 1 Yes Y Replace the main PCB Replace the fan motor No DC motor voltage input and output control chip is inside the motor v DC motor voltage input and output NO Colo
46. the unit when the power supply gt gets normal Check the wiring of power wires well or correctly Reconnect it well Check the wiring of L Reconnect it well and N well or correctly Check the wiring of bridge rectifier well or correctly Reconnect it well Check whether bridge rectifier is normal Yes Replace the bridge rectifier wire between main board and the gt Reconnect it well Replace the module lf has IPM board is connected tightly Yes No Y Check whether the connecting wire of the compressor is gt Reconnect it well connected correctly or tightly Yes Check if the outdoor unit ventilation is good Yes Check if the outdoor fan runs properly Yes Replace IPM board Replace the outdoor main No gt No 5 heck the wiring of reacto or inductance Make the outdoor unit ventilate well Yes Check whether reactor or please refer to the solution of fan speed inductance is normal has been out of control malfunction Find out the cause and have it solved Check the compress is gt Replace the compressor Yes Check whether the refrig
47. 3 Troubleshooting 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 board and the main board is it connected good No Y Yes No 1 Replace IPM board and then check whether the system can run normally Replace outdoor main board and then check Yes gt Yes normally Reconnect and retry Is error still display whether the system can run y No Y Replace the electric control v box 134 Trouble is solved Electrical Control System Troubleshooting 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 Y Check whether the resistance of condenser temp sensorT3 is wrong Yes Replace condenser temp sensor T3 refer to the Appendix 1 No 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 No
48. 4 5 Standard anti cold air function 4 6 Standard auto defrosting function 4 7 Standard self diagnose function 4 8 Standard timer function and sleep mode function controlled by controller General Information 5 Indoor Units Part 2 Indoor Units 4 way Cassette Type 7 u us 22 Ceiling amp Floor Type 38 Console w 50 Indoor Units Indoor Units 4 way Cassette Type 4 way Cassette Type T Features aaa 8 2 Features 24K 30K 9 9 DIMENSIONS s dennen 13 4 SPACE uu u xu asta upa 15 9 WING DIS gr amS uu u ES nn 16 6 Electric Characteristics 18 1 sistat artus t unda dta 18 19 9 The Specification 20 WINO etc 21 12 18 1 Features 12K 18K 1 1 New panel gt Q60 surrounding air outlet design affords comfortable feeling 1 2 Compact design gt body size is 5 0x260x5 70mm it s just smaller than the ceiling board so its very easy for in
49. Control System 137 Troubleshooting 2 4 4 9 PO malfunction PO display Temperature protection of compressor top Y Whether compressor Whether the connection is No No Reconnect and retest operates good Yes Yes Whether refrigerant circulation volume is normal 2 e Recor ume No Replace the protector protector is normal resistance 0 No Charge refrigerant Yes Y Replace the outdoor main PCB Whether abnormality is the same after gas charging No Y Check refrigerant system such as clogging of capillary etc 138 Electrical Control System Troubleshooting 2 4 4 10 P1 malfunction Only for 36K 48K P1 display High pressure protection Whether the wiring between the high pressure switch and main control No gt Connect it well board is connected well or correctly Yes Whether the high pressure protector is broken Method the plug Measure the resistance of the high pressure protector if gt Replace high pressure protector the protector is normal the value 1 Check whether the outdoor ambient temperature is Yes Stop the unit higher than 50 C i No Y Check if the outdoor unit NO entiation is 260d Make the outdoor unit ventilat
50. ESSURE SWITCH Cooling amp Heating unit only 4 WAY VALVE CONDENSER TEMPERATURE SENSOR OUTDOOR AMBIENT TEMPERATURE SENSOR MAIN BOARD RY1 on _ 12 7 CURRENT DETECTOR Oa EXHAUST SP A TEMPERATURE SENSOR POWER FILTER POWER RECTIFIER WIRING DIAGRAM OUTDOOR UNIT Applicable to the units Applicable to the units 202075890647 adopting motor only Applicable to the units AC motor only CODE PART NAME COMP COMPRESSOR CAP1 CAP2 FAN MOTOR CAPACITOR AC CURRENT DETECTOR Dp DIODE MODULE RED a 1 2 bead ICD D ELECTRIC EXPANSIVE VALVE FM1 FM2 OUTDOOR DC FAN TP EXHAUST TEMPERATURE SENSOR T3 CONDENSER TEMPERATURE SENSOR 1 x FECRSIYELLOW Ferrite bead 1 vuo MAIN BOARD L NOTE Four way valve is used in the BLUE SV 1 amp Heating OUTDOOR AMBIENT Uni on zl EX gt gt HEATSINK TEMPERATURE SENSOR Y I n C PTIONAL y TP EEV fie 3 Gier 174 T3 YIG H PRO L PRO 2 i 919 _ 3 EN 5111194 AVHO XT2 S bd
51. FF are both lighted 3 Follow me function There is a temperature sensor inside the wire controller after setting temperature it will compare the two temperatures and the space of wire controller will be the same as setting temperature It is available under cooling heating auto mode 4 ON OFF indication When it is on the icon display otherwise it is extinguished 5 Fan speed indication There are four fan modes low middle high auto For some models no middle fan then the middle fan is seen as high speed 6 Lock When the LOCK button is pressed the icon appears and other buttons is unable press again the icon disappears 7 Temperature display zone Generally it displays setting temperature it can be adjusted by press temperature button and V in fan mode no display here Remark 152 Electrical Control System Controller The wired controller will reset to factory setting with auto mode auto fan and 24 setting temperature when the air conditioner restarts after power failure And this may cause inconsistent displays on the wired controller and on the air conditioner You need to readjust the running status through the wired controller Installation Wiring Principle Sketch Wire Joint 5p r O O 5 Core Shield Cable length is decided by installation RUN GND Indoor Unit Switch Board Installation Notice Whe
52. HFN1 MUOW MOU 24HFN1 M MOG 24HFN1 MTOW MOU 36HFN1 M Outdoor Units Dimensions 61 Dimensions 51 LL ul C a 571 Unit mm A B D E F H MOU 48HFN1 M 938 634 404 448 370 392 1369 62 Outdoor Units Service Space 2 Service Space Wall or obstacle 22222202 72 Air More than 30cm 11 81in EEE sas s 11 81in 1 23 62 Maintain channel More than 60cm Air inlet gt _ 23621 More than 200cm 78 74in 2 DAE o Piping Diagrams 3 Piping Diagrams MOC 12HFN1 MSOW MOZ 12HFN1 MWOW MOF 18HFN1 MSOW
53. NORTH AMERICAN HVAC m LTD Tel 604 4308496 Fax 1 866 9034371 www northamericanhvac com North American Market SUPER DC INVERTER SERIES Service Manual 2014 LISAS B 1405 Contents Part 1 General Information Eua coco Eo U u u u u 1 UNICS RN 6 Part 3 Outdoor su sana 60 ciue Marire mtm 75 Part 5 Electrical Control System 106 XThe specifications designs and information in this book are subject to change without notice for product improvement Contents General Information Part 1 General Information Te ul uu u a 2 2 External Appearance 3 2 1 Indoor HILS oie e eR eoo eus nuyu 3 22 U Ig Ue 3 SN uuu u a 4 4 FedIUl 6S u uuu ss 5 General Information 1 Model Lists 1 Model Lists 1 1 Indoor Units R410A capacity multiplied by 1000Btu h CGemawwan 9 a coom 9 Gem 9 1 2 Outdoor Units Univer
54. Setting x SWITCH ror COMPENSATION INDOOR UNIT MAINBOARD 12 VaV Factory x BLACK MIDDLE PIPE TEMP VA CN55 WHITE ROOM TEMP ON WATER LEVEL SWITCH EN ON According TO SWING 0 GO UP AND to the BOARD DOWN BOARD setting RED BROWN UNE NM gt OOK Comm Bus Indoor Units 17 Electric Characteristics 6 Electric Characteristics Indoor Unit Model I Voltage Min MCA2U 12HRFN1 M 60 208 230V 187V 253V MCA2U 12HRFN1 M B 60 208 230 187V 253V MCA2U 18HRFN1 M 60 208 230V 187V 253V eo 208230 259 WCD24HRFNIMW 60 208230 sem 259 60 208 2007 sem 259 60 208220 187v 259 7 Sound Levels 18 ee 1 4m Microphone MCA2U 12HRFN1 M B Noise level dB A Max Indoor Units Accessories 8 Accessories Installation fittings 2 Installation hook Drainpipe Fittings 7 Drain joint Remote controller amp Its 235 holder 9 Remote controller holder 10 Mounting screw ST2 9x10 C H 11 Alkaline dry batteries AMA 12 Owner s manual Others 13 Installation manual 8 Remote controller s Indoor Units The Specification
55. ame as cooling mode in low speed All protections are active and the same as that in cooling mode 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 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 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 For console 1 3 7 1 The economy function is available in cooling heating or auto mode Electrical Control System 117 Electrical Control Function 1 3 7 2 Operation process in sleep mode is as follow When cooling the setting temperature rises 1 C be lower than 30 C every one hour 2 hours later the setting temperature stops rising and the indoor fan is fixed at auto speed When heating the setting temperature decreases 1
56. 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 Set the air conditioner under the mode of COOLING by remote controller and check the following points Indoor unit v vO YV V V V V V V V Whether the switch on 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 is 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 105 Electrical Control System 106 Part 5 Electrical Control System 1 Electrical Control Function nanne 107 2 Troubleshooting
57. are not impeded and not face the strong wind It is easy to install the connecting pipes and cables There is no danger of fire due to leakage 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 If 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 30 11 81 lt More than 60cm 23 62in Service space than 30cm 11 81in 4 gS Sf 228 Ss 7 EN E s A MA 0 E ka More than 60cm 23 62in E More than 200cm 78 74in 511 1 Installation 77 Indoor unit installation 3 Indoor unit installation 3 1 Compact cassette indoor unit installation 3 1 1 Service space for indoor unit Inlet Outlet Ground 3 1 2 Bolt pitch Drain side 570 545 Hook location 570 Body 647 Panel Unit mm 3 1 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 212
58. ashing 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 Norm code HP 10 If capacity demand code is higher than 99 the digital display tube will show single digit and tens digit For example the CAPAC CEMENG GONE 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 Amendatory capacity demand code The frequency after the capacity requirement transfer The frequency after the frequency limit The frequency of sending to 341 02 03 04 5 0 YER If the temp is lower than 0 degree the digital display tube will no un show 0 If the temp is higher than 70 degree the digital heating T2B nes display tube will show 70 07 Condenser pipe temp 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 13 129 degree If the temp is lower than 13 degree the digital display tube will show 13 If the tem
59. ater storage pipe should be set to avoid converse flow or blow water phenomena Indoor unit E More than 50mm More than 25mm N M p 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 Referthe following picture for installation reference m 6 P4 Hanger gt Down incline pipe 2 A Length of horizontal pipe lt 150mm Pp d BIN Lift height lt the pump head of water pump Flexible pipe 300mm 6 2 8 Blowhole setting gt For the concentrated drainage pipe system there should design a blowhole at the highest point of main pipe to ensure the condensate water discharge smoothly 100 Installation Drainage pipe installation gt The air 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 Indoor unit
60. be higher than 17 every one hour 2 hours later the setting temperature stops rising and indoor fan is fixed at auto 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 and turns off 1 3 7 4 Shutdown change the mode or speed setting will cancel the economic operation 1 3 7 5 When user uses timer off function in sleep mode or sleep function in timer off mode if the timing is less than 7 hours sleep function will be cancelled when reaching the setting time If the timing is more than 7 hours the machine will not stop until reaches the setting time in sleep mode For other units 1 3 7 1 The economy 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 C be lower than 30 every one hour 2 hours later the setting temperature stops rising and the indoor fan is fixed at low speed When heating the setting temperature decreases 1 C be higher than 17 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 and 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
61. cal Control R Remote Control Function Code C Cooling Only H Cooling amp Heating A Cooling amp Heating PTC Capacity x1000Btu h T Tropical Condition T1 Condition Designed Time A Time A Designed B Time B Designed C Time C 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 Manufactory 3 2 Outdoor Unit MOU T 36HD N1 R RCA Energy Efficiency Code Power Supply Q 220 240V 1N 50HZ R 380 420V 50Hz N 220 230V 1N 60Hz D 220V 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 amp Heating PTC Capacity x1000Btu h T Tropical Condition 1 Condition U Side Discharge Outdoor Unit V Top Discharge Outdoor Unit S Centrifugal Fan Outdoor Unit O Outdoor unit Manufactory 4 General Information Features 4 Features 4 1 Low ambient kit is standard for outdoor units 4 2 Network control function is standard for the indoor units 4 3 Standard auto restart function and follow me function 4 4 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
62. crew bolt Hanging arm 92 Installation Indoor unit installation Hang the unit on the hanging arm by sliding backward Securely tighten the mounting bolts on both sides some of the models 60 do not do this Hangin deed bolt N Hanging arm For some of the models 60 please securely tighten the mounting bolts on both sides Han n abis bolt wW Then install the side panels and grilles back to the main unit 2 Floor standing installation Hang the indoor unit on the hook The bottom of body can touch with floor or suspended but the body must install vertically Installation 93 Indoor unit installation 3 6 Console indoor unit installation 3 6 1 Service space for indoor unit 2100mm O 3 6 2 Install the main body Fix the hook with tapping screw onto the wall Hook Tapping Screw Washer HHHHHHHHHHHEHHHHHHHHHHRH lt 6mm HHH e the indoor unit on the hook tg 92 7 77 r p 21 000mm The bottom of body can touch with floor or suspended but the body must install vertically 94 LTLTLITLTLTILTLTLT LLL LI ind z L L LL EJ LIS SP LPL LP LP Lr i Installation Indoor unit installation 4 Outdoor unit installation Side D
63. d bottom to make quick cooling When the A C is just switched on or room temp is still high cold air will be blown out from top and bottom air outlet to cool down the room quickly gt Air outlet from top to maintain room temp When the room has been cooled down or the A C has been opened over 1 hour cold air only from the top outlet to keep constant room temp Heating mode gt Anti cold air When the AC is just turn on temperature of evaporator is very low in this case in order to prevent cold air direct blowing only the upper louver is opened in a high position the lower louver closed Indoor Units 51 Features 1 4 Four air inlets A 1 5 Low noise gt DC indoor fan motor which has five speeds gt Low noise and energy saving gt Advanced centrifugal fan technology makes a fast airflow and reduces the indoor noise lower to 28dB 1 6 Golden fin is optional 1 7 Active carbon filter is standard 52 Indoor Units 2 Dimensions Indoor Units ji
64. discharge Check whether the compressor discharge temp is Yes more than 115 C No T No Y Check whether the refrigerant is leak Yes Stop leaking add refrigerant sensor and PCB according to wiring diagrams Yes Y M easure the resistance value of compressor discharge temp sensor If the value is No Replace the compressor discharge temp sensor not normal is normal refer to the Appendix 2 Yes whether the connection is right between compressor discharge temp No Correct the wiring connection No Replace high pressure valve assy 142 Electrical Control System Troubleshooting 2 4 4 14 P5 malfunction When condenser high temp is more than 65 C the unit will stop and unit runs again when outdoor pipe temp less than 52 C P5 display Check the connection between temperature No Correct the connection High temperature protection of No sensor and PCB condenser Yes Check whether the condenser temperature is Higher than 65 C Yes y Check whether the outdoor ambient temperature is Yes Stop the unit higher than 50 C Check if the outdoor unit N ephilpiiomisuaoq Make the outdoor unit ventilate well Y
65. door display board Console Infrared signal receiver Operation lamp Timer indicator PRE DEF indicator cooling and heating type or fan only indicator cooling only type Temporary button 2 1 7 Display board of auto lifting panel of 4 way cassette 24K 48K Digital 88 Display Check Button Running LED Timer LED Defrost LED Alarm LED 122 Electrical Control System Troubleshooting 2 2 Indoor unit malfunction For Console NO Malfunction Running lamp Timer lamp Defrosting lamp 1 Open or short circuit of T1 temperature sensor Ww 2 Open or short circuit of T2 temperature sensor X Communication malfunction between indoor and outdoor units 5 Indoor EEPROM malfunction IPM module protection 7 Open or short circuit of T3 or T4 temperature sensor or Outdoor unit EEPROM parameter error 8 Over voltage or over low voltage protection eter comorsar ane pereon ________ 1 orn spaan an boen otten _ For 12K amp 18K units excluding console MUE 24HRFN1 MW MTB 24HRFN1 MW MCD 24HRFN1 MW NO Running Timer Defrosting Alarm Display nixie lamp lamp lamp lamp tube Open or short circuit of T1 temperature X X X EO sensor Open or short circuit of T2 temperature sensor 4 Outdoor fan speed has been out of control u 5 X Communication malfunction between indoor X and outdoor units Water level alarm malfunction Indoor EEPROM malfunction IPM module protection Ope
66. e well Yes v please refer to the solution of fan Check if the outdoor fan runs speed has been out of control No malfunction Find out the cause have it solved Yes Check whether the heat Yes gt exchanger is dirty Clean the heat exchanger No Replace outdoor board Y Check whether the refrigerant system is ok Electrical Control System 139 Troubleshooting 2 4 4 11 P2 malfunction Only for 36K 48K P2 display Low pressure protection Whether the wiring between the low pressure protector and main control No Connect it well board is connected well or correctly Yes Y Whether the low pressure protector is broken Method Disconnect the plug Measure the resistance of the low pressure protector If the No Replace low pressure protector protector is normal the value is 0 in udi Yes Check whether the outdoor ambient temperature is too Yes gt Stop the unit low lo Check whether valve core of high pressure valve is opened No Open fully valve core of high pressure valve Yes v Check if the indoor fan runs No properly in cooling mode please refer to the s
67. ecification of Power MUBU 12HRFN1 B Model MUBU 12HRFN1 M B MUE 24HRFN1 MW MUBU 18HRFN1 M Power L and Voltage 208 230V 60Hz e 230V 60Hz Circuit Breaker Fuse A 20 16 40 30 mwono 48 Indoor Units Field Wiring 9 Field Wiring MUBU 12HRFN1 M MUBU 12HRFN1 M B MUBU 18HRFN1 M MUE 24HRFN1 MW Air Condition Link Circuit INDOOR UNIT Use 4 cable OUTDOOR UNIT Power supply to Use 3 care cable 14 1 Use 3 core cable 16AWG To Power supply Use 3 core cable 12AWG Air Condition Link Circuit Indoor Units 49 Console Type 50 Console Type Sici oret 51 lt DIMENSIONS e ennen manden 53 Service Space 54 Wiring Diagrams 55 Electric Characteristics 96 57 E 58 The Specification of 58 auc u 59 Indoor Units Features 1 Features 1 1 Modern and elegant appearance gt simple and stylish designs can nicely harmonies with your living space 1 2 Four panels optional 1 3 Two air outlet ways Cooling mode Quick Cooling To maintain room temp gt Air outlet from top an
68. en indoor and outdoor unit Refer the following formula to calculate the charge volume Diameter of liquid pipe mm 06 35 09 52 Formula V 15g mx L 7 5 V 30g mx L 7 5 V Additional refrigerant charge volume g L The length of the liquid pipe m Note gt Refrigerant may only be charged after performed the vacuum drying process gt 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 gt 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 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 During operation temperature of gas pipe and liquid pipe shall be over heating o
69. erant system is ok 144 No the wiring No gt Replace reactor or inductance Electrical Control System 2 4 4 16 P7 malfunction P7 display evaporator High temperature protection of Whether compressor operates heck the connecti between T2 and PCB Check whether T2 and T2B Is reversed No Yes Y Check whether the outdoor ambient temperature is higher than 30 C Yes Yes gt Stop the unit Y Check whether the resistance of T2 is normal refer to the Appendix 1 Check whether the air outlet is blocked Yes Clean the air outlet Y Check whether the indoor fan is running normal please refer to the solution of fan speed has been out of control malfunction Find out the cause and have it solved No gt Yes Y Check whether the heat exchanger and filter are dirty Yes gt Clean the heat exchanger and filter Replace the indoor main PCB Electrical Control System Yes Troubleshooting No Correct the connection gt Replace the temperature sensor 145 Troubleshooting Appendix 1 Temperature Sensor Resistance Value Table kom
70. es v please refer to the solution of fan Check if the outdoor fan runs speed has been out of control No heck whether the resistance of condenser temp sensor is normal efer to the Appendix 2 Replace the temperature sensor properly malfunction Find out the cause and have it solved Yes Check whether the heat RS exchanger is dirty es ean the heat exchanger Yes No Replace outdoor main board Refrigerant is not enough add the refrigerant Check whether the refrigerant system is ok Electrical Control System 143 Troubleshooting 2 4 4 15 P6 malfunction 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 IPM module protection No Check whether the power voltage is normal Yes Measure whether outdoor terminal voltage is normal Yes Measure whether the voltage between L and N is normal Yes Y Measure whether input voltage of bridge rectifier is normal i Yes Y Measure whether the voltage between P and N is normal refer to the Appendix 3 Yes Y Check whether the connecting Restart
71. f control function or group control function Remote on off ports Central control ports 1 6 Built in drain pump Optional gt Built in drain pump lift the water to 750mm upmost It s convenient to install drainage piping under most space condition 24 Indoor Units Features 750mm upmost 1 7 Built in display board gt gt gt The standard indoor unit can be controlled by wired controller There is a 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 The 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 25 Indoor Units Dimensions 2 Dimensions Air filter optional B inlet from rear side 4 S 4 EN 5 b 155 gt 5 55 ett 252 RS 60600 555 eee sats 000000000 tof lt ne 5 99 5 KS RRS 900602460 KS 22222 222 5 4050 0 NI 505020 IKS 2222 lt SO SI lt x x 222 lt lt lt lt 2 lt 5050 0 5 500 222 s 2 SIS 522222526 52 252 5 A 5 50 5 ue 252 5 5 9
72. f for 1 hour Condition of entry defrosting time1 time2240 minutes When defrosting is end time1 and time2 are cleared 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 2 T3 ZTempQuitDefrost ADD G 3 27 for 60seconds For 36K units Condition of defrosting T3 lt TempEnterDefrost_ ADD and lasts for 40 minutes Condition of ending defrosting Electrical Control System 115 Electrical Control Function If any one of following items is satisfied defrosting will stop and the machine will turn to normal heating mode D gt TempQuitDefrost ADD C 2 The defrosting time achieves 10min 8 Turn to other modes or off Defrosting action 4 Way valve u u no longer than 10min Compressor Indoor fan 15 Outdoor fan PMV running 8 mins with 300P 480P PMV 1 3 3 5 High evaporator coil temp T2 protection For 12K 18K units MUE 24HRFN1 MW MTB 24HRFN1 MW MCD 24HRFN1 MW T2 gt TEH2 C the compressor running frequency decreases to the lower level every 20s When the frequency decreases to F2 and the T2 is still over TEH2 C for 3 minutes the compressor will stop 12 lt 48 or TEH2 C lt T2 lt 48 C for 6 minutes the frequency will not be limited 2 gt 60 C the compressor will stop and restart when T2 lt
73. get angle after compressor starts 2 EXV will close with 160P when compressor stops Then EXV will be standby with 480P open and will open to target angle after compressor starts 3 The initial open angle of EXV is 110P adjustment range is 80 480p The unit starts to work for 3 minutes then adjusting open angle according to the temperature of compressor discharge every 2 minutes For other models 1 EXV will be fully closed when turning on the power Then EXV will be standby with 300P open and will Electrical Control System 111 Electrical Control Function open to target angle after compressor starts 2 EXV will close with 160P when compressor stops Then EXV will be standby with 300P open and will open to target angle after compressor starts 3 The initial open angle of EXV is 300P The unit starts to work for 3 minutes then adjusting open angle according to the temperature of compressor discharge every 2 minutes 1 3 3 2 Outdoor fan running rules For MOC 12HFN1 MSOW MOC 12HFN1 MVOW MOZ 12HFN1 MWOW MOF 18HFN1 MSOW MOF 18HFN1 MUOW MOG 24HFN1 MTOW 1414 Low lt 15 12 10 ZH IUIS N High Y For other models DC FAN SSLOW SPD 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 act
74. iminating the non condensable gas air in system to prevent 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 55mmHg 2 Ifthe 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 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 7 3 2 Special vacuum drying The special vacuum drying method shall be adopted when 1 Finding moisture during flushing refrigerant pi
75. ion 112 Electrical Control System For Console T1 Ts AT 2 19 1 5 Electrical Control Function Low ET Medium High Y For 2rd Ceiling floor Compact cassette A5 Duct 12 18K MUE 24HRFN1 MW MTB 24HRFN1 MW MCD 24HRFN1 MW For other units 1 3 3 4 Defrosting mode T1 Ts 6 AT 2 5 T1 Ts AT 2 4 5 4 Low Medium Medium High Y For 12K 18Kunits 4 MOG 24HFN1 MTOW Excluding MOZ 12HFN1 MWOW Condition of defrosting 4 gt 0 Defrosting starts when either of the following O amp The units run with T3 lt 3 C for 40 minutes and keeps lower than TCDI C for more than 3 minutes 2 units run with T3 lt 3 C for 80 minutes and keeps lower than 2 for more than 3 minutes Electrical Control System 113 Electrical Control Function T4 lt 0C If are satisfied then the program judges if T2 has decreased more than 5 C When T2 has decreased more than 5 enter the defrosting mode No matter what value of the T4 is and whether the T2 drops more than 5 or not if the machine runs with T3 lt 3 C for more than 120 minutes and keeps lower than 4 for more than 3 minutes the machine will enter defrosting mode Condition of ending defrosting If any one of the following items is satisfied the defrosting will finish and the machine will t
76. ischarge Unit 4 1 Service space for outdoor unit Wall or obstacle Air inlet More than 30cm 11 81in More than 60cm More than 30cm En 23 62in N e Maintain channel y gt at More than 60cm XS Air inlet __ gt 23 62in 7 7 More than 200cm 78 74in 4 2 Bolt pitch MOU 36HFN1 M MOU 48HFN1 M 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 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 Installation 95 Indoor unit installation Fix with bolt P x ILI ILI CLAP PER 51 rax e OO Tx Mv f fau JEPINI MOMON MOMOMO MN x e QU DOO XX OO gt lt 4 SRS AS QS XA 5 A 5 OY 6 5 5 4 2 5 xX 2 s tat QS 505 A 5 A W h h k Q
77. lity more healthy and comfortable gt Ventilation motor is optional to increase the effect of fresh air Indoor Units Features 24K 36K 7 New air intake 2 3 Optional ionizer generator gt lonizer generator is optional to get refreshing air to your room lonizer generator Ventilation motor connector connector lonizer can be switched on or off 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 10 Indoor Units Features 24 36 2 4 External air duct design gt Reserve external air duct more flexible for the air supply 2 5 Built in draining pump gt Due to the improvement of structure more convenient to repair or replace the draining pump E A m S 8 1 gt draining pump to make sure condensed water out reliably Max 750mm Ceiling Indoor Units 11 Features 24K 36K 2 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 N35 ALARM CN33 ON OFF CN23 Long distance on off controller 2 7 Optional touch screen wired controller gt Touch screen wired controller is optional with error code indication function Better man machine conversation interface gt Undated structu
78. ll the air filter Insert the air filter through the filter slot and fix it with 2 screws A d d rd Stet 8 Ta F x de 25 A 0000009 Se CM a 209 fox 25 5 4 Eo t 5 3 3 6 Install the air duct Please design the air duct as below recommended picture Canvas tie in Canvas tie in Isolation booth Air dust filter Air inlet Air outlet Isolation booth checking orifi Installation 86 Indoor unit installation 3 3 7 Change the air inlet direction Take off ventilation panel and flange cut off the staples at side rail Air return flange 3 When install the filter mesh please plug it into flange inclined from air return opening and then push up 4 The installation has finish upon filter mesh which fixing blocks have been insert to the flange positional holes Installation 87 Indoor unit installation 3 4 Ceiling amp floor indoor unit installation 24K 48K 3 4 1 Service space for indoor unit 4 gt 35mm SSS gt 35mm 3 4 2 Bolt pitch D Ceiling installation Capacity Btu h 24K 2 Wall mounted installation imm im IL LII mmi LI L mm LI mu LI
79. ls 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 Electrical Control System 109 Electrical Control Function 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 For Console High lt Medium Y Low For 2rd Ceiling floor amp Compact cassette Duct 12 18K MUE 24HRFN1 MW amp MTB 24HRFN1 MW MCD 24HRFN1 MW For other units 5 0 4 0 3 0 2 0 High Medium Z Y Low High lt Medium Y Low 1 3 2 4 Evaporator low temperature T2 protection For 12K 18K units MUE 24HRFN1 MW MTB 24HRFN1 MW MCD 24HRFN1 MW Excluding MCA2U 12HRFN1 M B MUBU 12HRFN1 M B MTBU 12HRDN1 M B T2 0 the compressor will stop and restart when T2 gt 5 110 Electrical Control System Electrical Control Function 0 S T2 lt 4 the compressor frequency will be limited and decreased to the lower level every 1 minute till off 4 lt 2 lt 7 the compressor will keep the current frequency 2 gt 7 the compressor frequency will not be limited For MCA2U 12HRFN1 M B MUBU 12HRFN1 M B MTBU 12HRDN1 M B When T2 lt 4 and lasts for 250s or T2 lt 0 C the indoor has no capacity demand and resume till 2 gt 8 For other units When T2 lt 2 C and lasts fo
80. more easily gt wiring works can be finished before installation 1 8 Outside water pump for optional when ceiling installation 40 Indoor Units Features 24K 36K 1 1 New design more modern and elegant appearance 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 Foam case Plastic spraying surface 1 6 Easy operation 1 7 Remote control and optional wired control method Indoor Units 41 Dimensions 2 Dimensions
81. n or short circuit of T3 or T4 temperature sensor or outdoor EEPROM is malfunction O PCB and up down panel PCB Up down panel malfunction 5 Outdoor unit over current protection Inverter compressor drive error Ww O light X off flash at 2 5Hz at 0 5Hz FO F1 is only available for super slim cassette N a ES N A SEN Electrical Control System 123 Troubleshooting For 24K 48K Units excluding MUE 24HRFN1 MW amp MTB 24HRFN1 MW Malfunction Defrosting Alarm Running lamp Timer Display digital lamp lamp lamp tube Communication malfunction between indoor X and outdoor units 1 X X 1 sensor sensor sensor Communication malfunction between main PCB and up down panel A X off flash at5Hz O flash at 0 5Hz FO F1 is only available for super slim cassette 2 3 Outdoor unit malfunction For MOC 12HFN1 MSOW MOC 12HFN1 MVOW MOF 18HFN1 MSOW MOF 18HFN1 MUOW MOG 24HFN1 MTOW 1 standby for normal Operation normally Communication malfunction between compressor driver board and de de P4 outdoor main board Compressor driver board EEPROM malfunction light X off 2 5Hz flash 124 Electrical Control System Troubleshooting For other models Gw EB Outdoor fan speed has been out of control BENT Top temperature protection of compresso
82. n 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 While installing using Screwdriver or other tools to open the back cover from the inside Back cover of Wire Controller fe mu Front cover of me e Wire Controller LCD display Wood Mounting Turning cover screw M420 For the Tenminal Group 15 standing After the back cover is out of the back cover so It 15 fastened to fix up the necessary to obligate holes and front cover first lock it is forbiden to fasten difectly to the one of the two then the another NOTE The connecting wire should be a little longer as to take away the switch board easily for maintenance The connecting wire should be a little longer as to take away the controller easily for maintenance Electrical Control System 153
83. nding tape Ms Drainpipe Fittings 8 Accessories 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 and N around it to five circles EMS amp It s fitting Indoor Units 35 The Specification of Power 9 The Specification of Power MTBU 12HRDN1 M Model MTBU 12HRDN1 M B MTB 24HRFN1 MW MTBU 18HRDN1 M Power Frequency and Voltage 208 230V 60Hz 208 230V 60Hz Circuit Breaker Fuse A 20 16 40 30 Foor Unit Power vino mm 36 Indoor Units Field Wiring 10 Field Wiring MTBU 12HRDN1 M MTBU 12HRDN1 M B MTBU 18HRDN1 M MTB 24HRFN1 MW Air Condition Link Circuit INDOOR UNIT tj Use 4 cable OUTDOOR UNIT Ta Power supply Li Use 3 care cable 144WVG MTB 24HRFN1 M MTB 36HWFN1 M MTB 48HWFN1 M 202070590697 INDOOR UNIT 1 Use 3 core cable 16AWG To Power supply Use 3 cable 12AWG Air Condition Link Circuit Indoor Units 37 Field Wiring 38 Ceiling amp Floor Type 4E 39 a DIMENSIONS u u uuu T 41 44 Wiring Diagrams 45 Electric Characteristics 47 cum 47 ACCESS OUIOS 1 T 48 The Specification of
84. o panel then connect the lead terminator of the swing motor and that of the control box with corresponding terminators on the body respectively Install the 4 corner covers back Installation cover s rope Tap Screw Slide the four sliders in the corresponding channel when installing the cover Note The panel shall be installed after the wiring connected 84 Installation Indoor unit installation 3 3 A5 duct indoor unit installation 3 3 1 Service space for indoor unit 200mm or more 300mm or more lt N X Z x 777777777777 2 600mmA600mm checking orifice V 3 3 2 Bolt pitch Electric control box Size of outline dimension mounted plug Capaci ity KBtu 36 18 24 3 3 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 12mm 45 50mm deep at the selected positions on the ceiling Then embed the expansible hooks fittings Installation 85 Indoor unit installation 3 3 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 3 5 Insta
85. ode only NOTE While the unit is running under SLEEP mode it would be cancelled if MODE FAN SPEED or ON OFF button is pressed 4 VERT SWING Used to stop or start horizontal louver movement and set 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 and set the desired left right air flow direction The louver changes 6 degree in angle for each press If Keep pushing more than 2 seconds the vertical louver swing feature is activated 6 FEEL SELF CLEAN Function Press this button less than 2 seconds will initiate FEEL function And if Keep pressing this button more than 2 seconds the SELF CLEAN function is initiated 7 RESET Button When the RESET button is pushed all of the current settings are cancelled and the control will return to the initial settings 8 LOCK Button Push this button to lock in all the current settings To release settings push again 9 FAN SPEED Button Fan speed will be selected in following sequence once pressing this button _ LOW MED HIGH 10 UP Button Push this button to increase setting temperature or to increase Hour during Clock time setting 11 DOWN Button Push this button to decrease setting temperature or to decrease Hour during Clock time setting NOTE Press and hold UP and DOWN button
86. olution of fan speed has been out of control malfunction Find out the cause and have it solved uda ON Y rl Yes Replace outdoor main board No Refrigerant is not enough add the refrigerant Check whether the refrigerant system is ok 140 Electrical Control System 2 4 4 12 P3 malfunction P3 display Current protection of compressor i The protection occurred in standby No Y Check whether the power voltage is normal Yes Measure whether outdoor terminal voltage is normal Yes Measure whether the voltage between L and N is normal c Restart the unit when the power supply gets normal Check the wiring of power wires well or correctly Check the wiring of L and N well or correctly Yes Measure whether input voltage Check the wiring of of bridge rectifier is normal Yes Measure whether the current is normal Measure whether the voltage between P and N is normal refer to the Appendix 3 Yes Check whether the outdoor ambient temperature is higher than 50 C v Check if the outdoor unit ventilation is good i Yes v Check if the outdoor fan runs properly Yes Y Check whether the heat exchanger i
87. ontrol System 119 w 2155 16 17 Electrical Control Function the temp is higher than 99 degree the digital display tube will show single digit and tens digit For example the digital display tube show 0 5 means the IGBT radiator temp is 105 degree the digital display tube show 1 6 1 means the IGBT radiator temp is 116 degree Indoor unit number The indoor unit can communicate with outdoor unit well Condenser pipe temp of 1 indoor unit If the temp is lower than 0 degree the digital display tube will Condenser pipe temp of 2 indoor unit show 0 If the temp is higher than 70 degree the digital display tube will show 70 If the capacity demand is 0 the Condenser pipe temp of 3 indoor unit digital display tube will show O If the indoor unit is not connected the digital display tube will show 2 Indoor unit capacity demand code tube will show single digit and tens digit For example the digital display tube show 5 0 1 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 3 Indoor unit capacity demand code oe code is higher than 99 the digital display B display tube will show 120 Electrical Control System Troubleshooting 2 Troubleshooting 2 1 Display board 2 1 1 Icon explanation on indoor display board Super slim
88. or correctly Reconnect it well heck whether bridge rectifier is normal No Replace the bridge rectifier Yes Y Replace the module If has sl Check the wiring of reactor or inductance Reconnect the wiring Yes Replace the IPM board If the IPM board and main board is in a board replace the outdoor main PCB Check whether reactor gt inductance is normal lt lt Yes Replace reactor or inductance 136 Electrical Control System Troubleshooting 2 4 4 8 E8 malfunction Power off then restart the unit 5 seconds later Is it still displaying the error code No gt The unit operates normally Yes Find out the cause and have it solved For example whether the fan is blocked or the screws which fix the fan are tighten Shut off the power supply rotate the fan by hand Does it rotate properly No Yes Check the wiring of fan motor Are all the connections good No Correct the connections Yes Check whether the main PCB is normal through index 1 Yes Y Replace the main PCB Replace the fan motor No Index 1 er me SCEE 2 11 Cn OV 13 5 16 5V s 6 m Electrical
89. p is higher than 99 degree the digital display tube will Compressor discharge temp T5 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 41 67 means the compressor discharge temp is 116 degree AD value of current The display value is hex number AD value of voltage Indoor unit running mode code Off 0 Fan only 1 Cooling 2 Heating 3 Outdoor unit running mode code Off 0 Fan only 1 Cooling 2 Heating 3 Forced cooling 4 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 BitG Frequency limit caused by PFC Frequency limit The display value is hex Bit5 caused by T4 number For example mm the digital display tube Frequency limit Based show 2A then 5 lt 1 Bit3 1 Bit1 1 10 11 12 13 4 1 15 Frequency limit symbol Frequency limit It means frequency limit 2 caused by T4 T3 and Bit2 caused by T5 current Frequency limit Bit1 caused by current Bit Frequency limit caused by voltage The display value is between 30 120 degree If the temp is sd lower than 30 degree the digital display tube will show 30711 Electrical C
90. pe 2 Conducting construction on rainy day because 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 reaches 55mmHg start to pressure leakage test If it cannot reach the value repeat vacuum damage and vacuum drying again for 1 hour 102 Installation Additional refrigerant charge 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 8 Additional refrigerant charge gt After the vacuum drying process is carried out the additional refrigerant charge process needs to be performed gt The outdoor unit is factory charged with refrigerant The additional refrigerant charge volume is decided by the diameter and length of the liquid pipe betwe
91. pipe if necessary Installation 97 Drainage pipe installation 5 2 10 Set the wall conduit 5 2 11 Set the supporter for the pipe 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 gt 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 es 1 4 6 35 144 176 1420 1720 Sag 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 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 least 1 100 slope of the drainage pipe gt 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 intersection with other pipelines and ens
92. r High pressure protection For 36 48 Low pressure protection For 36K 48K Current protection of compressor Discharge temperature protection of compressor P High temperature protection of condenser a P IPM module protection High temperature protection of evaporator In low ambient cooling mode the LED displays LC or alternative displays between running frequency and displays 0 55 Electrical Control System 125 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 Correct the connections Check the connections between temperature sensor and PCB Are the connections good Yes Measure the resistance value of the sensor via Appendix 1 No gt Replace the sensor Yes Replace the indoor PCB 2 4 1 2 Outdoor unit malfunction Power off then restart the unit 2 minutes later If the outdoor main board displays error code several minutes later Whether the outdoor main board has error displayed Yes Refer to corresponding solving steps 126 Electrical Control System Troubleshooting 2 4 1 3 Indoor EEPROM malfunction Power off then restart the unit 2 minutes later Yes v Replace the indoor main PCB EEPROM An electrically erasable programmable read only memory whose contents can be erased and
93. r Signal Voltage 1 Red VsVm 192V 380V 2 4 5 22 6 FG 135165V 128 Electrical Control System 2 4 1 6 Refrigerant Leakage Detection Shut off the power supply and turn it on 2 minutes later Is it still displaying the error code Yes v Is there cool air blowing Yes out from indoor air outlet No Y Is there any leakage Especially the connection parts such as the gas valve and the liquid valve No r Is there any blocking Such as the capillary or the welded points of the pipes Yes Y Clear the blocking Check if T2 sensor is well fixed Correct the installation or replace T2 sensor Does the problem remain again Yes Y Replace indoor PCB Repair the leakage and recharge the refrigerant 2 4 1 7 Inverter compressor drive protection Refer to the outdoor unit P6 malfunction part to solve this problem Electrical Control System Troubleshooting 129 Troubleshooting 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 FO Displayed Communication failure between indoor unit and up down panel heck the wire connection between up down panel and indoor unit is it right Yes gt Correct the connection Replace the up down panel
94. r 3 minutes the indoor has no capacity demand and resume till 227 1 3 2 5 Condenser high temperature protection 12K 18K units amp MOG 24HFN1 MTOW 55 C lt T3 lt 60 C the compressor frequency will decrease to the lower level every minutes till F1 and then runs at F1 If T3 lt 54 the compressor will keep running at the current frequency T3 52 the compressor will not limit the frequency and resume to the former frequency T3 gt 60 for 5 seconds the compressor will stop until T3 52 For other units When T3265 for seconds the compressor will shut off When T3 lt 52 the compressor Will restart 1 3 3 Heating Mode 1 3 2 1 Electronic Expansion Valve EXV Control Excluding MOC 12HFN1 MSOW MOF 18HFN1 MSOW For MOC 12HFN1 MVOW MOZ 12HFN1 MWOW MOF 18HFN1 MUOW 1 EXV will be fully closed when turning on the power Then EXV will be standby with 480P open and will open to target angle after compressor starts 2 EXV will close with 160P when compressor stops Then EXV will be standby with 480P open and will open to target angle after compressor starts 3 The initial open angle of EXV is 480P adjustment range is 80 480p The unit starts to work for 3 minutes then adjusting open angle according to the temperature of compressor discharge every 2 minutes For MOG 24HFN1 MTOW 1 EXV will be fully closed when turning on the power Then EXV will be standby with 480P open and will open to tar
95. r Passage Filter Panel for easy installation Panel 1 2 Easy Installation Two air inlet styles Bottom side or Rear side gt 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 emy Air intake from rear Standard Air intake from bottom 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 It is 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 23 Features gt Replace the motor or centrifugal fan Remove the ventilated panel firstly Remove a 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 gt Ventilated Panel 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 of
96. r 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 during heating Insulation work must be carried out to prevent hurt by carelessness touching 9 1 3 Insulation material selection for refrigerant pipe gt The 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 Installation 103 Engineering of electrical wiring Liquid pipe Insulation meterial Gas pipe 5 24 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 a
97. r the panel hooks till the panel closely stick on the ceiling to avoid condensate water Body IM Panel sealing foam Ceiling Panel foam2 EE s 222 Panel foam e Outlet air Air plate Panel Panel foam 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 Note The panel shall be installed after the wiring connected 80 Installation Indoor unit installation 3 2 Super slim cassette indoor unit installation 3 2 1 Service space for indoor unit Connecting point of Connecting point of drain pipe refrigerant pipe Liquid side Connecting point of refrigerant pipe ws I Gas side T 0 Ceiling aw i gt 1000mm gt 1000mm 2 Outlet N Panel 880mm ceiling hole 7 Ground gt 2500mm 3 2 2 Bolt pitch Tubing side Drain side T pp ai Em d e 383 3 e rat 780 Hook location 840 Body Unit mm 950 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 212 45 50mm deep at the selec
98. re design 4 way wire layout design no raised part at backside more convenient to place the wires and install the device 12 Indoor Units Dimensions 3 Dimensions 12K 18K h Drain hole Gas side Body for Service Liquid side 4 install hanger TOT jo 2 2 2150 Distribution duct 6 2 X _ 2 7170 INI Su Eres E parts box gee 4 Screw hole for install panel lt
99. ri Replace the indoor main PCB 2 4 2 2 Up down panel is defective panel can not mo slightly check the iring of louver mo No 1 Displayed Up down panel is defective Retry if panel can up and down normally No If panel can move slightly power off then restart the unit 2 minutes later If the error still exists heck the wiring o eft and right sensors Yes Reconnect The up down panel is defective replace it lt 0 Yes Reconnect x Replace the louver motors No s 130 Electrical Control System Troubleshooting 2 4 4 For the outdoor unit 2 4 4 2 EO malfunction Power off then restart the unit 2 minutes later Yes Replace the outdoor main PCB EEPROM An electrically erasable programmable read only memory whose contents can be erased and reprogrammed using a pulsed voltage Electrical Control System 131 Troubleshooting 2 4 4 3 E2 malfunction For 12 18K units MUE 24HRFN1 MW MTB 24HRFN1 MW MCD 24HRFN1 MW Power off then restart the unit 2 minutes later Yes Y Measure Vs is it positive fluctuation Vs is the voltage between S and N of outdoor unit Red pan S Black Yes Y Check the outdoor wiring connection Yes Check whether reactor Replace the reactor
100. s dirty Replace outdoor board No v Check whether system pressure is too high v Check whether the refrigerant system is ok Electrical Control System mm e bridge rectifier well or correctly Reconnect it well Reconnect it well Reconnect it well Yes Replace the outdoor main PCB gt Yes Troubleshooting heck whether bridge rectifier is normal No Replace the bridge rectifier Yes Y Yes Stop the unit Replace the PFC module lf has No Make the outdoor unit ventilate well please refer to the solution of fan speed has been out of control malfunction Find out the cause and have it solved No Yes Clean the heat exchanger Recycle the over charged refrigerant Check the wiring of reactor or inductance Yes Check whether reactor or inductance is normal No Reconnect the wiring Replace reactor inductance Troubleshooting 2 4 4 13 P4 malfunction When compressor discharge temperature is higher than 115 C the unit will stop and unit runs again when compressor discharge temperature is lower than 90 C P4 display Temperature protection of compressor
101. s this button timer on function is active Then every press the time increase 0 5 after 10h 1h increasement after each press If cancel this Function just set it to 0 0 3 Timer off button Press this button timer off function is active Then every press the time increase 0 5h after 10h 1h increasement after each press If cancel this function just set it to 0 0 4 Follow me button When under cool heat and auto mode press this button follow me function is active Press again this function is ineffective 5 Electrical heater button If press this button in heat mode electrical heater function become ineffective 6 Reset button hidden Use a 1mm stick to press in the little hole then the current setting is canceled The wire controllers enter into original state 7 ON OFF button When in off state press this button the indicator is on the wire controller enter into on state and send setting information to indoor PCB When in on state press this button the indicator is off and send instruction If timer on or timer off has been set it cancel this setting then send instruction to stop the machine Electrical Control System 151 Controller 8 9 10 11 12 13 Adjust button Set indoor temperature up If press and hold on it will increase at 1degree per 0 5 second Adjust button Set indoor temperature down if press and hold on it will decrease at 1degree per 0 5 Second Swing button Firs
102. s together for 3 seconds will alternate the temperature display between the OC amp OF scale 12 TIME ON Press this button to activate the Auto on time setting Each press will increase the time setting in 30 minutes increments up to 10 hours then at 1 hour increments up to 24 hours To cancel the Auto on time setting just press the button until the time setting is 0 0 13 TIME OFF Press this button to activate the Auto off time setting Each press will increase the time setting in 30 minutes increments up to 10 hours then at 1 hour increments up to 24 hours To cancel the Auto off time setting just press the button until the time setting is 0 0 14 TURBO Active Disable Turbo function Turbo function enables the unit to reach the preset temperature in the shortest time When press this button on heating mode applicable to the unit adopts PTC only the PTC will be energized and bring fast heating operation 15 CLOCK Button Used to set the remote clock 16 LED Button Disable Active indoor screen Display 150 Electrical Control System Controller 3 2 Wired Remote Controller KJR 12B ON OFF BUTTON 8 ADJUST BUTTON A ADJUST BUTTON Y SWING BUTTON 1 ECONOMY BUTTON 2 SPEED BUTTON B LOCK BUTTON 1 Mode button When press this button the operation mode change as the following sequence ja ee ui Remark For the cooling only model the heating mode is skipped 2 Timer on button Pres
103. sal Outdoor unit Model Compressor type Compressor Brand Matched indoor units MOC 12HFN1 MSOW MCA2U 12HRFN1 M MOC 12HFN1 MVOW Rotary GMCC MFAU 12HRFN1 M MTBU 12HRDN1 M MFAU 12HRFN1 M B MCA2U 12HRFN1 M B MOZ 12HFN1 MWOW Rotary GMCC MUBU 12HRFN1 M B MTBU 12HRDN1 M B MOF 18HFN1 MSOW Rotary GMCC MUBU 18HRFN1 M MCA2U 18HRFN1 M MOF 18HFN1 MUOW Rotary GMCC MTBU 18HRDN1 M MUE 24HRFN1 M MOU 24HFN1 M Rotary GMCC MCD 24HRFN1 M MTB 24HRFN1 M MUE 24HRFN1 MW MOG 24HFN1 MTOW Rotary GMCC MTB 24HRFN1 MW MCD 24HRFN 1 MW MUE 36HRFN1 M MOU 36HFN1 M Rotary MITSUBISHI MCD 36HRFN1 M MTB 36HWFN1 M MUE 48HRFN1 M MOU 48HFN1 M Rotary MITSUBISHI MTB 48HWFN1 M MCD 48HRFN1 M 2 General Information 2 External Appearance 2 1 Indoor Units 4 way cassette 12K 18K Ceiling Floor 12K 18K 2 2 Outdoor Units Single fan outdoor unit General Information External Appearance 4 way cassette 24 48 SS SSS TE Ceiling Floor 24K 48K nn Double fan outdoor unit Nomenclature 3 Nomenclature 3 1 Indoor Unit M U B T 36 H R D N1 Q RC4 Energy Efficiency Code Power Supply Q 220 240V 1N 50Hz 380 420V 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 Mechani
104. stallation and will not damage the decoration The panel size is 647x50x64 7mm The hooks are designed in the four corners of the body which can save installation space 1 i il jn 1 3 Electric control box built in design gt E box is simply and safely built inside the indoor unit Its convenient for installation and maintenance Can check the control part easily you only need to open the air return grille E Box Inside 1 4 Air passage function gt Reserves the space for air outlet from side of indoor unit availed to connect air duct from the two sides to the nearb small rooms Indoor Units Features 24 36 2 Features 24K 36K 2 1 Overview gt Compact design super slim body size less space requiring in installation gt Each louver can be separately controlled more comfort air blowing is possible gt Auto lifting panel design more convenient to clean and maintain the filter optional 4 gt 9 2 840mm Pu s a j i zi F 4 4 ai j mu Lone 840mm Old Cassette New slim cassette Volume change 18K 24K 840 230 840 18K 24K 840 205 840 11 Dimension 30K 840 300 840 30K 840 205 840 32 36K 48K 840 300 840 36K 48K 840 245 840 18 2 2 Fresh air intake function gt Fresh air fulfills air qua
105. t press start swing function second press stop swing Match to some model with swing function Economy operation button press this button the indoor unit operates in economy mode press again exit this mode it may be ineffective for some models Fan speed button press this button consecutively the fan speed will circle as follow D 1 i Y ub Jm A C m gt AU x Lock button hidden When you push the LOCK all current settings locked and the wire controller does not accept any operation except that of the LOCK button Use the lock mode when you want to prevent setting from being changed accidentally or play fully Push the LOCK button again when you want to cancel the LOCK mode Name and function of LCD on the wire controller Operation mode indication 4 op 3 Follow me function LIII eem ERE Fan speed indication 2 Timer ON OFF 7 Temperature display zone 1 Operation mode indication When press MODE button the following mode can be selected in circle Auto Cool Dry Heat Fan only Auto Auto Cool Dry gt Heat gt Fan only gt Auto For cooling only model heat mode is skipped 2 Timer When adjust setting on time or only on time is set the is lighted When adjust setting off time or only off time is set the OFF is lighted If on and off timer are both set the ON and O
106. t the joint pipe shall be banded to the gap pipe and liquid pipe tightly The linking part should 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 VV 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 cause leakage to damage the house decoration 9 2 3 Insulation material selection for drainage pipe gt insulation material should be flame retardant material the flame retardancy of the material should be selected according to the local law gt Thickness of insulation layer is usually above 10mm gt 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 gt single pipe should be insulated before connecting to another pipe the joint part should be insulated after the drainage test gt There should no insulation gap between the insulation material 10 Engineering
107. ted positions on the ceiling Then embed the expansible hooks fittings Installation 81 Indoor unit installation 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 levelness of the main body is within 1 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 Ceiling Locate the air conditioner firmly by wrenching the nuts after having adjusted the body s position well 3 2 5 Install the panel Remove the grille 82 Installation Indoor unit installation Grid switch Remove the 4 corner covers 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 DASS Water receiver 8 Cross screwdriver Tighten the screws under the panel hooks till the panel closely stick on the ceiling to avoid condensate water Installation 83 Indoor unit installation 7 Loosen upper nut Gap not allowed Leakage Ceiling Pollution Water condensation 6 Hang air in grill t
108. ure slope is straight 6 2 2 Drainage pipe selection gt drainage 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 B 4 126 a 50 _ 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 PVC pipe Reference value of inner Allowable maximum water flowrate 1 4 4 7 10 12 14 98 Installation Drainage pipe installation For branch pipe PVC32 Attention Adopt En or bigger pipe to be main pipe For Vertical drainage pipe The following table is for reference PVC pipe ner Allowable maximum water flowrate l h diameter Pipe mm 25 E Attention Adopt PVCAO or bigger pipe to be the main pipe 6 2 3 Individual design of drainage pipe system gt The drainage pipe of air conditioner shall be installed separately with other sewage pipe rainwater pipe and drainage pipe in building gt drainage 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
109. urn to normal heating mode T3 rises to be higher than T3 keeps to be higher than TCDE2 C for 80 seconds The machine has run for 10 minutes in defrosting mode Defrosting action For 12K units no longer than 10min on 1085 _ F8 Compressor 2 x lof on j o 4 way valve off off Outdoor fan Indoor fan breeze 10s For 18K units amp MOG 24HFN1 MTOW gt no longer than 10min 60s 4 lt on pl0sig F8 on 4 way valve on Outdoor fan on on Indoor fan off breeze 10s 114 Electrical Control System Electrical Control Function For 24K Excluding MOG 24HFN1 MTOW amp 48K units Condition of defrosting T4 Timel ac Time2 Time conditions Time conditions Meet the following conditions 1 Running in heating mode 2 T423 3 Compressor is on 4 T3STempEnterDefrost ADD Cleared conditions Meet any one of the following conditions 1 Compressor is off 2 T3 gt TempEnterDefrost ADD Time2 Time conditions Meet the following conditions 1 Running in heating mode 2 T4 lt 3 C 3 Compressor is on 4 T3STempEnterDefrost ADD Cleared conditions Meet of the following conditions 1 Compressor is off and T3 gt TempEnterDefrost_ADD 2 last for 20 minutes 2 Running in cooling mode 3 Compressor is of
110. ut 1 minute delayed Stop the operation of air conditioner power off the power supply and put the cover of water test hole back to the original place 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 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 Installation 101 Vacuum Drying Leakage Checking 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 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 gt El
111. ying and leakage checking Additional refrigerant charge Insulation the joint part of refrigerant pipe Wiring connection and electric safety checking Test operation 76 Installation 2 Location selection Location selection 2 1 Indoor unit location selection Y V YV V V V V Y Y V V V 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 Y Y V V V V V V Y YV V The place shall easily support the outdoor units weight Locate the outdoor unit as close to indoor unit as possible The piping length and height drop cannot 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

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