MDV MDCA3-12HRDN1 Service Manual Download Page 78

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Indoor unit installation

Installation

161

3.7 Super slim cassette indoor unit installation

3.7.1 Service space for indoor unit

Model

18-30

205 >235

36-48

245 >275

287 >317

3.7.2 Bolt pitch

3.7.3 Install the pendant bolt

Select the position of installation hooks according to the hook holes positions showed in upper picture.
Drill four holes of Ø12mm, 45~50mm deep at the selected positions on the ceiling. Then embed the
expansible hooks (fittings).

Summary of Contents for MDCA3-12HRDN1

Page 1: ...DC INVERTER SERIES Service Manual 2014 LIS B 1411...

Page 2: ...Indoor Units 8 Indoor Units Part 2 Indoor Units New Four way Cassette Type Compact Super Slim Cassette Type Duct Type...

Page 3: ...ur way Cassette Type Compact 1 Features 10 2 Dimensions 12 3 Service Space 14 4 Wiring Diagrams 15 5 Air Velocity and Temperature Distributions Reference Data 17 6 Electric Characteristics 18 7 Sound...

Page 4: ...uilt i ply and saf check the co ction ce for air o e nearby sma gn affords c 70mm it s j the decorat four corners n design fely built in ontrol part ea outlet from all rooms comfortable f just smaller...

Page 5: ...Features 11...

Page 6: ...e 4 install hanger Body Drain pipe 32 Fresh air intake 65 647 647 50 Drain hole for Service 545 570 260 68 42 157 126 44 Wiring connection port 75 150 Distribution duct 2 E parts box 4 Screw hole for...

Page 7: ...S 14 3 ervice Space 4 Service 3 e Space...

Page 8: ...MDCA3 12HRDN1 MDCA3 18HRDN1 Wiring Diagrams 16 4 Wiring 4 Diagram ms...

Page 9: ...5 Air Velo 5 Airflowv Temperat ocity and velocity ture d Tempe erature D Air Distributio r Velocity and ons Refer Temperature rence Data Distributions R ta Reference Data 17...

Page 10: ...rac MCA MCA Note MFA Levels el RDN1 Q RDN1 Q cteristics Model A3 12HRDN1 A3 18HRDN1 e A Max Fuse s Hz Q 50 Q 50 e Amps A H 44 48 Indoor U Voltage 220 240V 220 240V 1 4 Micr nits Min Ma 198V 25 198V 25...

Page 11: ...uency POWER W CIRCUIT B FUSE A Phase Frequency POWER W CIRCUIT B FUSE A Connecting Wir Signal mm2 Connecting Wir c Signal mm2 ible hook tion hook tion paper boa pipe sheath pipe clasp ing band oint e...

Page 12: ...MDCA3 12HRDN1 MDCA3 18HRDN1 Field Wiring 21 1 Field 0 Wiring...

Page 13: ...Cassette Type 1 Features 28 2 Dimensions 32 3 Service Space 33 4 Wiring Diagrams 34 5 Air Velocity and Temperature Distributions Reference Data 35 6 Electric Characteristics 36 7 Sound Levels 37 8 Ac...

Page 14: ...Auto lifting panel design more convenient to clean and maintain the filter optional Old Cassette New Slim Cassette Reduction 18K 24K 840 230 840 840 205 840 11 30K 840 300 840 840 205 840 32 36K 48K 8...

Page 15: ...sing the C board will sh Ionizer g conne generator optional to g hed on or of Clean Air bu hine enerator ector r get refreshin ff by remote utton on the Ventilation connec ng air to you e controller r...

Page 16: ...ernal a n draining he improvem draining pum t design air duct mor g pump ment of struc mp to make s re flexible fo cture more sure conden or the air sup convenient nsed water d pply to repair or drain...

Page 17: ...nstall the d on 18k 30 stalled as T combined in Ala and long d nection of al red contro s optional w rface ay wire layo evice 0k Twin system n any of the arm lamp distance o larm lamp a oller with err...

Page 18: ...Dimensions 32 Super Slim Cassette Type 2 Dimensions Model A H 18 30 205 235 36 48 245 275 60 287 317...

Page 19: ...Service Space Super Slim Cassette Type 33 3 Service Space 1000mm 1000mm 1000mm 1000m m...

Page 20: ...MDCD 18HRDN1 MDCD 24HRDN1 MDCD 36HRDN1 MDCD 48HRDN1 MDCD 60HRDN1 Wiring Diagrams 34 Super Slim Cassette Type 4 Wiring Diagrams...

Page 21: ...locity Electronic expansionvalve Oil separator Compressor Lowpressure switch Oil return Capillary Highpressureswitch Lowpressureliquid accumulator Evaporator Capillary Outdoor unit Indoorunit 4 wayval...

Page 22: ...ic Characteristics 36 Super Slim Cassette Type 6 Electric Characteristics Model Indoor Unit Power Supply Hz Voltage Min Max MFA 50 220 240 198 254 15 50 220 240 198 254 15 50 220 240 198 254 15 50 220...

Page 23: ...D 48HRDN1 MDCD 36HRDN1 MDCD 30HRDN1 MDCD 24HRDN1 MDCD 18HRDN1 Sound Levels Super Slim Cassette Type 37 7 Sound Levels 1 4m Microphone Model Noise level dB A H M L 44 38 32 51 45 38 46 45 43 52 48 45 5...

Page 24: ...ut let pipe sheath 1 Out let pipe clasp 1 Remote controller Its Frame Remote controller Its Frame 1 Remote controller holder 1 Mounting screw ST2 9 10 C H 2 Remote controller manual 1 Alkaline dry bat...

Page 25: ...Model R Phase Freque POWE mm 2 CIRCU R Phase Freque POWE CIRCU Wiring Wiring 2 ower 00Btu h 30 se 50Hz 220 0 0 se 50H 220 5 0 5 ency and Volta ER WIRING UIT BREAKER ency and Volta ER WIRING m UIT BREA...

Page 26: ...Field Wiring 40 Super Slim Cassette Type 10 Field Wiring...

Page 27: ...41 Duct Type 1 Features 42 2 Dimensions 45 3 Service Space 46 4 Wiring Diagrams 47 5 Static Pressure 49 6 Electric Characteristics 51 7 Sound Levels 52 8 Accessories 53 9 The Specification of Power 54...

Page 28: ...air t ce ional standa ut the filter fr d age ke from rear Optional ge Filter Pa inlet style r all capacity rear and bot ttom in orde Optional fo ed fresh air o improve th ard product rom the indo r S...

Page 29: ...Remote al fan firstly Remo two bolts a nd central nd central co ote on off co onal water to 750 e on off port ove a half o and then rep l control p ontrol ports ontrol functio 0mm upmos ts Central of...

Page 30: ...d the dis ion 18k 30 stalled as T combined in er Standard e controlled receiver in th will realized play board c 0k Twin system n any of the d by wired co he E box M d remoter co can display t ms one...

Page 31: ...Size of outline dimension mounted plug A B C D E F G H I J K L M 12 700 210 635 570 65 493 35 119 595 200 80 740 350 18 920 210 635 570 65 713 35 119 815 200 80 960 350 24 920 270 635 570 65 713 35 1...

Page 32: ...Duct Type 46 Duct Type 3 Service Space Ensure enough space required for installation and maintenance All the indoor units reserve the hole to joint the fresh air pipe The hole size as following...

Page 33: ...MDTB1 12HWDN1 MDTB1 12HWDN1 B Duct Type Duct Type 47 4 Wiring Diagrams...

Page 34: ...MDTB 18HWDN1 MDTB 24HWDN1 MDTB 36HWDN1 MDTB 48HWDN1 MDTB 60HWDN1 Duct Type 48 Duct Type...

Page 35: ...60 Air flow rate m3 h External static pressure Pa 12K 0 200 400 600 800 1000 1200 0 5 10 15 20 25 30 35 40 45 50 55 60 Air flow rate m3 h External static pressure Pa 18K 0 200 400 600 800 1000 1200 1...

Page 36: ...low rate m3 h External static pressure Pa 36K 0 500 1000 1500 2000 2500 3000 0 10 20 30 40 50 60 70 80 90 100 110 120 130 Air flow rate m3 h External static pressure Pa 48K 0 500 1000 1500 2000 2500 3...

Page 37: ...20 240 198 254 15 MDTB 24HWDN1 50 220 240 198 254 15 MDTB 18HWDN1 50 220 240 198 254 15 MDTB1 12HWDN1 B 50 220 240 198 254 MDTB1 12HWDN1 50 220 240 198 254 15 Duct Type Duct Type 51 6 Electric Charact...

Page 38: ...30 MDTB 18HWDN1 44 36 33 MDTB 24HWDN1 45 43 41 MDTB 36HWDN1 46 44 42 MDTB 48HWDN1 47 41 37 MDTB 60HWDN1 47 45 43 Duct Type 52 Duct Type 7 Sound Levels Suction Discharge Microphone 1 4m Concealed Duct...

Page 39: ...ngs heating ler Its Fram ing So Bin Se Dr Se me W Ow Ins Ma an oundproof ins nding tape eal sponge rain joint eal ring ired controller wner s manua stallation man agnetic ring tw nd N around it Name s...

Page 40: ...000B 1 pha 220 240V 3 1 15 1 1 pha 220 240V 3 4 40 3 3 0 Model OWER Pha Fre PO CIR FUS POWER Pha Fre PO CIR FUS utdoor Connec Electric Signa utdoor Connec g Electric Sign ase V 50Hz 5 0 5 Btu h ase V...

Page 41: ...Duct Type 56 Duct Type For model 18 60 10 Field Wiring...

Page 42: ...iring GA Floor standing Type 123 Part 3 Outdoor Units 1 Dimensions 124 2 Service Space 127 3 Piping Diagrams 128 4 Wiring Diagrams 131 5 Electric Characteristics 139 6 Operation Limits 140 7 Sound Lev...

Page 43: ...U 18HFN1 810 549 325 350 305 310 558 MDOZU 12HDN1 810 549 325 350 305 310 558 MDOU 18HDN1 760 530 290 315 270 285 590 MDOU 12HDN1 760 530 290 315 270 285 590 Dimensions 124 Outdoor Units 1 Dimensions...

Page 44: ...MDOU 60HDN1 MDOU 48HDN1 Dimensions Outdoor Units 125 Model Unit mm A B C D E F H 940 600 376 400 340 360 1245...

Page 45: ...MDOU 60HDN1 New MDOU 48HDN1 Dimensions 126 Outdoor Units 938 W 634 W 85 1370 10 D2 448 D1 404 110 368 404 H W2 H2 D3 D1 65 R6 R6 A2...

Page 46: ...Service Space Outdoor Units 127 2 Service Space More than 60cm More than 30cm More than 60cm More than 200cm Air inlet Air inlet More than 30cm Air outlet Wall or obstacle Maintain channel...

Page 47: ...t T1 Room temp sensor T3 Condenser temp sensor T5 Discharge temp sensor T4 Ambient temp sensor INDOOR OUTDOOR CHECK VALVE Heating Model only CAPILIARY TUBE T2 Evaporator temp sensor middle CHECK VALVE...

Page 48: ...SIDE HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE CONDENSER Compressor 2 WAY VALVE 3 WAY VALVE 4 WAY VALVE COOLING HEATING T2B Evaporator temp sensor outlet T1 Room temp sensor T3 Condenser temp sensor T5...

Page 49: ...pressure switch INDOOR OUTDOOR Oil return Capillary Oil separator T2 Evaporator temp sensor middle Electronic expansion valve CAPILIARY TUBE LIQUID SIDE GAS SIDE HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE...

Page 50: ...MDOU 12HDN1 Wiring Diagrams Outdoor Units 131 4 Wiring Diagrams...

Page 51: ...MDOZU 12HDN1 MDOU 18HDN1 Wiring Diagrams 132 Outdoor Units...

Page 52: ...MDOU 18HFN1 Wiring Diagrams Outdoor Units 133...

Page 53: ...MDOU 24HDN1 220075301400 MDOU 24HDN1 220075302030 Wiring Diagrams 134 Outdoor Units...

Page 54: ...MDOU 36HDN1 Wiring Diagrams Outdoor Units 137...

Page 55: ...MDOU 48HDN1 MDOU 60HDN1 MDOU 48HDN1 MDOU 60HDN1 New Body Wiring Diagrams 138 Outdoor Units...

Page 56: ...220 240 198 254 MDOU 12HDN1 50 220 240 Electric Characteristics Outdoor Units 139 5 Electric Characteristics Model Outdoor Unit Power Supply Hz Voltage Min Max MFA 198 254 MDOU 18HDN1 50 220 240 198 2...

Page 57: ...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 con...

Page 58: ...5301401 59 MDOU 24HDN1 220075302030 55 MDOU 60HDN1 MDOU 60HDN1 63 MDOU 48HDN1 MDOU 48HDN1 62 MDOU 36HDN1 63 Sound Levels Outdoor Units 141 7 Sound Levels Note H 0 5 height of outdoor unit Model Noise...

Page 59: ...door unit installation 145 4 Outdoor unit installation Side Discharge Unit 170 5 Refrigerant pipe installation 171 6 Drainage pipe installation 175 7 Vacuum Drying and Leakage Checking 179 8 Additiona...

Page 60: ...Wiring connection and electric safety checking Test operation Refrigerant pipe installation and insulation Drainage pipe installation and insulation Indoor unit installation location selection Outdoor...

Page 61: ...n The place shall easily support the outdoor unit s weight Locate the outdoor unit as close to indoor unit as possible The piping length and height drop can not exceed the allowable value The place wh...

Page 62: ...e for indoor unit 3 1 2 Bolt pitch 3 1 3 Install the installation hooks Use either a M8 or M10 size bolt Use expansible hooks sunken anchors or other field supplied parts to reinforce the ceiling in o...

Page 63: ...gh the 4 ks evenly to n body is wit sure the ga nto the ceilin er firmly by w 4 hanger of ensure the thin 1 ps between ng for 24 mm wrenching th the main bo balance of t the body an m In genera he nut...

Page 64: ...panel hooks till the panel closely stick on the ceiling to avoid condensate water Hang the air in grill to the panel then connect the lead terminator of the swing motor and that of the control box wi...

Page 65: ...indoor unit installation 3 2 1 Service space for indoor unit Model A H 18 230 260 24 230 260 30 60 300 330 3 2 2 Bolt pitch 3 2 3 Install the pendant bolt Select the position of installation hooks acc...

Page 66: ...s wit sure the ga into the ce er firmly by w mm deep a 4 hanger of ensure the thin 1 ps between iling for 10 wrenching th at the selec the main bo balance of t the body an 12 mm In he nuts after cted...

Page 67: ...Indoor unit installation 150 Installation 3 2 5 Install the panel Remove the grille Remove the 4 corner covers Hang the panel to the hooks on the mainbody...

Page 68: ...ck on the ceiling to avoid condensate water 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 bod...

Page 69: ...outline dimension mounted plug L M 12 740 350 18 960 350 24 960 350 30 36 1180 490 48 60 1240 500 3 3 3 Install the pendant bolt Select the position of installation hooks according to the hook holes...

Page 70: ...in the air filte filter throug the air duc n the air duc body hrough the 4 ks evenly to n body is wit er h the filter s ct ct as below 4 hanger of ensure the thin 1 slot and fix it recommend the main...

Page 71: ...hed seal sponge as per the indicating place in the following fig and then change the mounting positions of air return panel and air return flange When install the filter mesh please plug it into flang...

Page 72: ...installation Installation 155 3 4 HESP duct indoor unit installation 3 4 1 Service space for indoor unit 3 4 2 Bolt pitch MHD MHG 500mm or more 600mm or more Indoor unit 600mmx600mm Maintenance and r...

Page 73: ...he air duc n the air duc nt bolt stallation hoo mm 45 50 s body hrough the 4 ks evenly to n body is wit ct ct as below Size o D 397 495 oks accordin mm deep a 4 hanger of ensure the thin 1 recommend o...

Page 74: ...3 nstallation 3 5 Ceiling 5 1 Servic 5 2 Bolt pi Ceiling ins Floor stan g floor in ce space for itch stallation nding installa ndoor unit r indoor un ation t installati it on Indoor r unit installati...

Page 75: ...board a anging arm ts on the un nt bolt stallation hoo mm 45 50 s ation g screw onto body he only insta and the grille on the hang nit oks accordin mm deep a o the wall R allation meth e For mode ging...

Page 76: ...sides some of the models 60 do not do this For some of the models 60 please securely tighten the mounting bolts on both sides Then install the side panels and grilles back to the main unit Floor stand...

Page 77: ...h Hang the The bottom allation le indoor u ce space for the main b hook with tap e indoor unit of body can unit instal r indoor un body pping screw t on the hoo touch with llation it w onto the wa ok...

Page 78: ...it Model A H 18 30 205 235 36 48 245 275 60 287 317 3 7 2 Bolt pitch 3 7 3 Install the pendant bolt Select the position of installation hooks according to the hook holes positions showed in upper pict...

Page 79: ...rille body hrough the 4 ks evenly to n body is wit sure the ga into the ce er firmly by w 4 hanger of ensure the thin 1 ps between iling for 10 wrenching th the main bo balance of t the body an 12 mm...

Page 80: ...g 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 Tighten the screws under the panel hoo...

Page 81: ...r 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 Install the 4 corner covers back Note Th...

Page 82: ...ion and maintenance 3 8 1 2 Please check the elevation difference between the indoor unit and the outdoor unit the length of the refrigerant pipe and the curved places bend of the pipe are no more tha...

Page 83: ...ront panel before connecting the pipes wires Pull down the two knobs on the grille take off the two screws then the air inlet grille goes free 3 8 2 3 Take the Pipe Clip off before connecting the pipe...

Page 84: ...d generation ceiling floor indoor unit installation 3 9 1 Service space for indoor unit 3 9 2 Bolt pitch Ceiling installation Capacity Btu h D E 18K 24K 983 220 36K 1200 220 48K 60K 1565 220 Wall moun...

Page 85: ...ews the main b stallation Th side board a anging arm stallation hoo mm 45 50 s tion s onto the w body he only insta and the grille on the hang oks accordin mm deep a wall Refer to allation meth e ging...

Page 86: ...Put the side panels and grilles back 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 suspe...

Page 87: ...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...

Page 88: ...h 30m 20m 24 000Btu h 30 000Btu h 50m 25m 36 000Btu h 60 000Btu h 65m 30m 5 2 The procedure of connecting pipes 5 2 1 Choose the pipe size according to the specification table 5 2 2 Confirm the cross...

Page 89: ...pipe and fix it by supporter For horizontal refrigerant pipe the distance between supporters should not be exceed 1m For vertical refrigerant pipe the distance between supporters should not be exceed...

Page 90: ...18K 18K 30m L L1 L2 24K 24K 50m 30K 30K 50m Max branch pipe length 15m L1 L2 Max branch pipe length difference 10m L1 L2 Drop Height Max height difference between indoor unit and outdoor unit 20m H1...

Page 91: ...Refrigerant pipe installation 174 Installation...

Page 92: ...id pipe m Note Refrigerant may only be charged after performed the vacuum drying process Always use gloves and glasses to protect your hands and eyes during the charge work Use electronic scale or flu...

Page 93: ...Electrical Control System 184 Electrical Control System Part 5 Electrical Control System 1 Electrical Control Function 185 2 Troubleshooting 202 3 Controller 235...

Page 94: ...ompressor discharge temp T5 115 for 5s compressor stops 108 T5 115 decrease the frequency to the lower level every 3 minutes till F1 90 T5 105 keep running at the current frequency T5 90 no limit for...

Page 95: ...de 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 co...

Page 96: ...Medium 3 0 1 3 2 Cooling Mode 1 3 2 1 Outdoor fan running rules For 12k models 22 20 High Low For other models 27 High Low 25 20 15 low temperature cooling Outdoor fan in low temperature cooling mode...

Page 97: ...HI_SPD_ADD B DC_FAN_MID_SPD_ADD C DC_FAN_MIN_SPD_ADD D DC_FAN_SLOW_SPD_ADD E DC_FAN_SSLOW_SPD_ADD 23 22 20 28 19 17 26 25 1 3 2 2 Indoor fan running rules In cooling mode indoor fan runs all the time...

Page 98: ...Ts 3 High Low 1 Medium 1 5 Setting fan speed Actual fan speed H H H G A H H B C M M M Z D M M M E F L L L D G L L L H I T1 Td L L L L D H H H H G M M M M Z 4 5 3 0 1 5 4 5 3 0 1 5 4 5 3 0 1 5 For oth...

Page 99: ...r level every 3 minutes till F1 and then runs at F1 If T3 54 the compressor will keep running at the current frequency T3 52 the compressor will not limit the frequency and resume to the former freque...

Page 100: ..._FAN_MIN_SPD_ADD B DC_FAN_MID_SPD_ADD A DC_FAN_HI_SPD_ADD 21 19 18 16 15 13 12 10 For other models 14 12 Low High 1 3 3 2 Indoor fan running rules When the compressor is on the indoor fan can be set t...

Page 101: ...DFA 12HRDN1 For MDUB 12HRDN1 MDTB1 12HWDN1 Electrical Control Function 192 Electrical Control System T1 TS T 3 2 High Low 2 5 T1 Ts 6 T 2 High Low 1 Medium 1 5 2 5 T1 Ts T 2 High Low 1 Medium 1 5 0 5...

Page 102: ...e program judges if T2 has decreased more than 5 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 machin...

Page 103: ...PMV running 6 mins with 300P Compressor 10S 30S TimeA 10S no longer than 10min Condition of ending defrosting If any one of following items is satisfied defrosting will stop and the machine will turn...

Page 104: ...Compressor is off 2 T3 TempEnterDefrost_ADD Time2 Time conditions Meet the following conditions 1 Running in heating mode 2 T4 3 3 Compressor is on 4 T3 TempEnterDefrost_ADD Cleared conditions Meet an...

Page 105: ...eps running mark the minimum value of T3 from the 10th minutes to 15th minutes as T30 1 If the compressor cumulate running time is up to 29 minutes and T3 TCDI1 T3 T30SUBT3ONE T30 2 If the compressor...

Page 106: ...nd the T2 is still over TEH2 for 3 minutes the compressor will stop T2 48 or TEH2 T2 48 for 6 minutes the frequency will not be limited T2 60 the compressor will stop and restart when T2 48 Console 18...

Page 107: ...other models Drying mode works the same 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 Time...

Page 108: ...ature rises 1 be lower than 30 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 be higher th...

Page 109: ...r 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...

Page 110: ...example the digital display tube show 2A then Bit5 1 Bit3 1 Bit1 1 It means frequency limit caused by T4 T3 and current Bit6 Frequency limit caused by PFC Bit5 Frequency limit caused by T4 Bit4 Frequ...

Page 111: ...mporary button Operation lamp Timer indicator MAN play board play board play board play board OPERATION TIMER D PRE DEF indic or fan only indic NUAL Big cassette Compact ca Ceiling flo A5 Duct H DEF...

Page 112: ...cal Contr 1 5 Icon ex 1 6 Display 1 7 Display rol System xplanation on y board of au y board of GA n indoor disp uto lifting pa A floor stand play board anel of 4 way ding Console y cassette Troublesh...

Page 113: ...Troubleshooting 204 Electrical Control System 2 1 8 Icon explanation on indoor display board 3rd generation ceiling floor...

Page 114: ...rive protection X X 12 Discharge temperature protection of compressor X O X O light X off flash at 2 5Hz flash at 0 5Hz NO Malfunction Running lamp Timer lamp Defrosting lamp Alarm lamp Display nixie...

Page 115: ...pressor drive protection X 11 Indoor fan Speed has been out of control O 12 Outdoor fan malfunction X O O light X off flash at 5Hz flash at 0 5Hz For console type 18K NO Malfunction Running lamp Timer...

Page 116: ...it of T1 temperature sensor X X X E2 3 Open or short circuit of T2 temperature sensor X X X E3 4 Open or short circuit of T2B temperature sensor X X X E4 5 Water level alarm malfunction X X X EE 6 Ind...

Page 117: ...E8 9 Communication malfunction between main PCB and up down panel PCB X F0 10 Up down panel malfunction X F1 11 Up down panel is not closed X O F2 12 Communication malfunction between master unit and...

Page 118: ...r coil temperature sensor T3 4 times O F3 Open circuit or short circuit of Compressor discharge temperature sensor T5 5 times O F4 Outdoor unit EEPROM error 1 times P0 IPM malfunction 2 times P1 Over...

Page 119: ...n or short circuit of T3 or T4 temperature sensor E5 Voltage protection of compressor E6 PFC module protection Only for 36K 48K with 1 phase P0 Top temperature protection of compressor P1 High pressur...

Page 120: ...4 1 1 Open or short circuit of temperature sensor Check the connections between temperature sensor and PCB Are the connections good Correct the connections No Yes No Replace the sensor Replace the ind...

Page 121: ...trical Control System 2 4 1 3 Indoor EEPROM malfunction EEPROM An electrically erasable programmable read only memory whose contents can be erased and reprogrammed using a pulsed voltage 2 4 1 4 Water...

Page 122: ...hen the unit is in standby measure the voltage of pin1 pin3 pin4 pin3 in fan motor connector If the value of the voltage is not in the range showing in below table the PCB must have problems and need...

Page 123: ...sole 12k Refer to the outdoor unit P6 malfunction part to solve this problem 2 4 1 7 Communication malfunction between indoor and outdoor units The same as E2 in outdoor 2 4 2 For the super slim casse...

Page 124: ...Troubleshooting Electrical Control System 215 2 4 3 For the unit with TWINS function For the super slim cassette A5 duct 2 4 3 1 Communication malfunction between master unit and indoor unit...

Page 125: ...tem 2 4 3 2 Other malfunction between master unit and indoor unit One indoor unit displays F4 which means another indoor unit is faulty Check another indoor unit s error code and then follow the appro...

Page 126: ...217 2 4 4 For the outdoor unit 2 4 4 1 IGBT over strong current protection Only for 12k 2 4 4 2 E0 malfunction EEPROM An electrically erasable programmable read only memory whose contents can be erase...

Page 127: ...N Yes Power off then restart the unit 2 minutes later No Replace the outdoor main PCB Power on Is the error extinguished Check the outdoor wiring connection Replace the indoor main PCB Power on Is th...

Page 128: ...n power wire Yes Yes Replace the signal wire Yes Pull out and insert back No No Replace indoor main PCB is the error distinguished Yes Replace the outdoor Main PCB No Check whether there s any interfe...

Page 129: ...Troubleshooting 220 Electrical Control System 2 4 4 5 E3 malfunction...

Page 130: ...lace outdoor ambient temperature sensor T4 Check whether the wiring of the outdoor ambient temperature sensor T4 is broken off Check whether the resistance of outdoor ambient temperature sensor T4 is...

Page 131: ...Troubleshooting 222 Electrical Control System 2 4 4 7 E5 malfunction...

Page 132: ...Troubleshooting Electrical Control System 223 2 4 4 8 E6 malfunction Only for 36K 48K with 1 phase...

Page 133: ...Troubleshooting 224 Electrical Control System 2 4 4 9 P0 malfunction...

Page 134: ...Troubleshooting Electrical Control System 225 2 4 4 10 P1 malfunction Only for 30K 60K...

Page 135: ...ell Replace outdoor main board No Replace low pressure protector No Whether the low pressure protector is broken Check whether the outdoor ambient temperature is too low No Stop the unit Yes Open full...

Page 136: ...o No Yes Replace the PFC module If has No Measure whether the voltage between P and N is normal refer to the Appendix 3 Replace the bridge rectifier No Check whether bridge rectifier is normal Check t...

Page 137: ...ing 228 Electrical Control System 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 low...

Page 138: ...No Check whether the outdoor ambient temperature is higher than 50 No Stop the unit Yes Check if the outdoor unit ventilation is good Yes Make the outdoor unit ventilate well Check whether the heat e...

Page 139: ...o Yes Replace the PFC module If has No Measure whether the voltage between P and N is normal refer to the Appendix 3 Replace the bridge rectifier No Check whether bridge rectifier is normal Check the...

Page 140: ...Troubleshooting Electrical Control System 231 2 4 4 16 P7 malfunction...

Page 141: ...6 13059 76 1 34105 116 0 40060 3 41 5878 37 5 87359 77 1 29078 117 0 38991 2 39 8239 38 5 62961 78 1 25423 118 0 37956 1 37 1988 39 5 39689 79 1 21330 119 0 36954 0 35 2024 40 5 17519 80 1 17393 120 0...

Page 142: ...489 5 234 9 35 35 78 75 8 084 115 2 422 4 222 8 36 34 32 76 7 82 116 2 357 3 211 4 37 32 94 77 7 566 117 2 294 2 200 7 38 31 62 78 7 321 118 2 233 1 190 5 39 30 36 79 7 086 119 2 174 0 180 9 40 29 15...

Page 143: ...ix 3 Normal voltage of P and N 208 240V 1 phase 3 phase 380 420V 3 phase In standby around 310VDC around 530VDC In operation With passive PFC module With partial active PFC module With fully active PF...

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