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Air Conditioner Service Manual

42

11. Trouble shooting

11.1 Outdoor control diagram

11.2 The structure of ODU PCB

ONE TO 2 TYPE

Motor

Communication

Filter circuit for
heavy current

Switch power supply

LP HP

Communication

Communication

Sensor
circuit

Expansion
valve

4-way valve

Compressor
driving

Rectifying filtering
circuit

PFC

EEPROM

Switch power supply

Communication

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Summary of Contents for WM 09K

Page 1: ... 09K OMEGA WM 12K OMEGA WM 18K OMEGA ODU 18K2 OMEGA ODU 24K3 CONTENTS 1 Important Notice 2 Technical Specification 3 Product Dimensions 4 Refrigeration cycle diagram 5 Operation details 6 Wiring diagram 7 Explosion view and parts 8 Precaution 9 Names of parts 10 Installation 11 Trouble shooting ...

Page 2: ...ble for the interpretation of this information nor can it assume any liability in connection with its use The information specifications and parameter are subject to change due to technical modification or improvement without any prior notice The accurate specifications are presented on the nameplate label How to order spare parts To have your order filled promptly and correctly please furnish the...

Page 3: ...100 Heating W 980 230 1450 1490 250 1780 1710 420 2050 Operating Current Cooling A 1 13 4 5 6 87 1 3 6 8 8 4 1 6 8 5 9 5 Heating A 1 02 4 3 6 43 1 13 6 7 8 1 1 9 7 8 9 3 Annual electricity consumption Cooling W 238 298 352 Heating W 1325 1637 2098 Refrigerating System Refrigerant Charge Gram R410A 1350g R410A 1800g R410A 2300g CO2 equivalent Tonnes 2 819 3 759 4 803 Compressor type Twin Rotary Twi...

Page 4: ... type Model A B C 9K 770 205 250 12K 770 205 250 18K 910 205 292 Cassette type 580 19 620 3 04 580 124 64 144 293 50 113 95 255 45 Duct type Model A B C D E F G H I J 7 9 12K 700 447 200 570 172 510 140 738 298 158 18K 920 447 200 790 172 730 140 958 298 158 A H F I J B E C G D ...

Page 5: ...Air Conditioner Service Manual 4 Outdoor Unit Model Outdoor unit D E F G H I J K OMEGA ODU 18K2 780 605 290 521 360 327 5 55 56 OMEGA ODU 27K3 900 650 315 623 374 347 61 56 ...

Page 6: ...Air Conditioner Service Manual 5 4 Refrigeration cycle diagram TIN1 PMV1 TIN2 TIN3 PMV2 PMV3 PMV4 TIN4 T2B1 T2B24 T2B3 T2B4 ST CONDENSER liquid storage pot T3 T4 TP HP COMPRESSOR Optional Evaporator ...

Page 7: ...tically Note If the air conditioner you purchased is a Cooling Only one but you preset the remote controller as Heat Pump it doesn t bring any matter But if the air conditioner you purchased is a Heat Pump one and you preset the remote controller as Cooling Only then you CAN NOT preset the Heating operation with the remote controller 1 ON OFF button 2 2 Swing control button 3 FAN SPEED control but...

Page 8: ...error code 6 Condenser temperature protection When condenser temperature 65 and keep 10s the air conditioner will shut down and show error code and recover while condenser temperature 52 and the compressor stop for 3minutes 7 IPM module protection IPM module has high temperature over current protection itself if there is signal feedback to IPM the outdoor unit will shut down LED on outdoor PCB wil...

Page 9: ...ess than 2 the controller will shut down compressor and show error code while the ambient temperature is over 1 the compressor will run automatically 3 Auto fan control in cooling mode In cooling mode include cooling in Feel mode fan speed is determined by δt as the following diagram 4 DRY Mode Operation 1 The system for DRY operation used the same refrigerant circle as the cooling one 2 When the ...

Page 10: ...and cut off for 30seconds later than compressor 5 Defrosting Defrosting is controlled by the microprocessor When the unit operate 30 minutes accumulated and the compressor operation more than 3 minutes continuously one of the following conditions is satisfied unit comes into defrosting a When FrostDeg 5 and OPT 5 the 2 times defrosting interval time is 45 minutes b When 10 FrostDeg 5 and OPT Frost...

Page 11: ...he following conditions is satisfied unit comes out of defrosting and shifts to heating mode a Outdoor coil Temperature OPT 5 and keeps 30 seconds b Outdoor coil Temperature OPT 10 and keeps 2 seconds c Continue 11minutes defrost Operation 5 Indoor exchanger overheat protection When Indoor exchanger Temperature IPT is higher than 54 unit comes into indoor exchanger overheat protection The compress...

Page 12: ... button ON OFF on the indoor then insert the plug into the socket again 3 Keep pressing the Emergency button for more than 10 seconds until three short beeps heard the Auto restart function been activated 4 When the unit in operation press the timer button 10 times in 8s the Auto restart function will be active if the Auto restart is active the Auto restart off 9 Water pump control cassette and du...

Page 13: ...fault EE 19 Temp switch fault on top of the compressor EP 8 Voltage sensor fault EU 12 Suction temperature sensor fault EH 18 Outlet temperature sensor A fault Ey 47 Outlet temperature sensor B fault 48 Inlet temperature sensor A fault En 51 Inlet temperature sensor B fault 52 Protection display code list light off flash Outdoor failure display Protection Type Indoor LED Code CASSETTE Outdoor ligh...

Page 14: ...protection 2 Over voltage lower voltage 3 Overcurrent 4 Exhaust over temperature protection 5 Outdoor coil over temperature protection 6 Drive fault and protection V1 VP1 7 Communication fault with indoor unit 8 Compressor overheat fault compressor top switch 9 Short circuit open circuit fault of outdoor temperature sensor 10 Short circuit open circuit fault of outdoor heat exchanger temperature s...

Page 15: ...Air Conditioner Service Manual 14 6 Wiring diagram INDOOR UNIT Wall split type Cassette Duct type ...

Page 16: ...Air Conditioner Service Manual 15 OUTDOOR UNIT ONE TO 2 TYPE ONETO 3TYPE ...

Page 17: ...Air Conditioner Service Manual 16 ONE TO 4 TYPE ...

Page 18: ...Air Conditioner Service Manual 17 7 Explosion view and parts WALL SPLIT TYPE OMEGA WM 09K OMEGA WM 12K INDOOR UNIT 5 1 2 24 25 26 27 28 30 21 22 23 15 19 20 18 17 16 14 13 12 11 10 9 8 7 6 4 3 ...

Page 19: ...tor 1 14 10104 100014 Indoor Sensor Assembly 1 15 11304 100028 Terminal 1 16 41105 000104 Electrical Box 1 17 22001 000318 Step Motor 1 18 41199 002747 Base 1 19 41101 000242 In And Out Pipe Fixer 1 20 22001 000262 Indoor Motor 1 21 42009 000011 Drainage Hose 1 22 42003 000060 Indoor Motor Cover 1 23 41109 000042 Installation Plate 1 24 92011 002804 Evaporator 1 25 42004 000039 Cross Fan 1 26 4200...

Page 20: ...14 10104 100014 Indoor Sensor Assembly 1 15 11304 100028 Terminal 1 16 41105 000104 Electrical Box 1 17 22001 000318 Step Motor 1 18 41199 002747 Base 1 19 41101 000242 In And Out Pipe Fixer 1 20 22001 000262 Indoor Motor 1 21 42009 000011 Drainage Hose 1 22 42003 000060 Indoor Motor Cover 1 23 41109 000042 Installation Plate 1 24 92011 002804 Evaporator 1 25 42004 000039 Cross Fan 1 26 42007 0000...

Page 21: ...Air Conditioner Service Manual 20 WALL SPLIT TYPE OMEGA WM 18K INDOOR UNIT 17 18 16 14 13 12 10 9 8 6 5 4 3 22 23 24 25 26 19 20 21 15 1 2 11 7 ...

Page 22: ...0321 Vane Motor 1 14 41105 000104 Indoor Sensor Assembly 1 15 11304 100028 Terminal 1 16 10104 100014 Electrical Box 1 17 22001 000318 Step Motor 1 18 41102 000031 Base 1 19 41101 000242 In And Out Pipe Fixer 1 20 22001 000266 Indoor Motor 1 21 42009 000011 Drainage Hose 1 22 41108 000013 Indoor Motor Cover 1 23 41109 000041 Installation Plate 1 24 92011 002777 Evaporator 1 25 42004 000012 Cross F...

Page 23: ...Air Conditioner Service Manual 22 CASSETTE TYPE INDOOR UNIT ...

Page 24: ... 3 Indoor fan 1 4 Base of evaporator 1 5 Evaporator 1 6 Capacitor of indoor motor 1 7 Terminal 2 8 Drain pan 1 9 Panel 1 10 Vane 4 11 Display PCB 1 12 Swing motor 4 13 Indoor transformer 1 14 Indoor main PCB 1 15 Pump 1 16 Water level switch 1 17 Remote controller 1 Not shown in explosion view 18 Indoor temp sensor 1 ...

Page 25: ...Air Conditioner Service Manual 24 DUCT TYPE INDOOR UNIT 1 2 3 4 6 5 7 8 9 10 11 12 13 14 15 16 17 18 24 7 23 22 19 20 21 ...

Page 26: ...9 Motor supporter 1 10 Down Vortex 2 11 Indoor fan 2 12 Up Vortex 2 13 Top plate 1 14 Left motor holder 1 15 Indoor motor 1 16 Right motor holder 1 17 Installation plate of electrical box 1 18 Electrical box 1 19 Main PCB 1 20 Motor capacitor 1 21 Transformer 1 22 Electrical box cover 1 23 Pipe cover plate 1 24 Right plate 1 25 Remote controller 1 Not shown in explosion view 26 Indoor sensor 1 27 ...

Page 27: ...Air Conditioner Service Manual 26 OUTDOOR UNIT OMEGA ODU 18K2 10 11 12 8 9 7 6 5 17 13 14 16 15 19 18 20 21 23 4 3 2 1 22 24 ...

Page 28: ... valve assembly 1 13 41202 000029 Base 1 14 41205 000053 Right plate 1 15 92008 000152 Two way valve 2 16 41204 000025 Valve supporter 1 17 92008 000150 Three way valve 2 18 41201 000005 Electrical box cover 1 19 42001 000110 Cable clamp 1 20 11304 100061 Terminal 1 11304 100029 Terminal 1 21 31201 000924 Outdoor PCB assembly 1 22 22011 000014 Inductor 1 23 92007 003062 Electronic expand valve ass...

Page 29: ...Air Conditioner Service Manual 28 OUTDOOR UNIT OMEGA ODU 27K3 10 11 12 8 9 7 6 5 17 13 14 16 15 19 18 20 21 23 4 3 2 1 22 24 ...

Page 30: ...00952 4 way valve assembly 1 13 41299 001314 Base 1 14 41205 000051 Right plate 1 15 92008 000152 Two way valve 3 16 41204 000023 Valve supporter 1 17 92008 000150 Three way valve 3 18 41201 000001 Electrical box cover 1 19 42001 000046 Cable clamp 1 42001 000109 Cable clamp 1 20 11304 100029 Terminal 1 11304 100061 Terminal 1 21 31201 000938 Outdoor PCB assembly 1 22 22011 000004 Inductor 1 23 92...

Page 31: ...ring in accordance with the wiring rules The air conditioner must be installed by professional or qualified persons Do not install the appliance at a distance of less than 50 cm from inflammable substances alcohol etc Or from pressurized containers e g spray cans If the appliance is used in areas without the possibility of ventilation precautions must be taken to prevent any leaks of refrigerant g...

Page 32: ...at it is earthed in accordance with current legislation and insert a thermomagnetic circuit breaker The batteries in remote controller must be recycled or disposed of properly Disposal of Scrap Batteries Please discard the batteries as sorted municipal waste at the accessible collection point Never remain directly exposed to the flow of cold air for a long time The direct and prolonged exposition ...

Page 33: ... children with reduced physical sensory or mental capabilities or lack of experience and knowledge unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety Do not climb onto or place any heavy or hot objects on top of the appliance Do not leave windows or doors open for long when the air conditioner is operating Do not direct t...

Page 34: ...l 2 Air filter 3 Special filter option 4 Display PCB 5 Vertical vane 6 Horizontal vane 7 Remote controller Outdoor unit No Name 8 Air outlet grille 9 Electronic box cover 10 2 way valve 11 3 way valve No Name 1 Power 2 Sleep 3 Temperature display 4 Timer 5 Run 1 2 3 4 6 5 7 INDOOR UNIT 8 9 10 11 OUTDOOR UNIT ...

Page 35: ...IGHTING ON Timer indicator Operation indicator PRE DEF indicator Pum p indicator INFRARED SIGNAL RECEIVER O Nwhen preset time fo r switching ON OFF the unit ONwhen the uni t is power o n ON when the water level is high ON when the uni t prevent cool air flowing in room Timer indica tor Ope ration indicat or PRE D EF indic ator Pum p indicator ...

Page 36: ...tioner Service Manual 35 Duct type 1 2 3 4 5 6 7 8 12 11 10 Outdoor Unit 9 10 12 11 6 7 8 5 9 Indoor Unit 13 13 DISPLAY Manual Sw itch Nixie tube Running light Timing light Defrosting preheat light warning light ...

Page 37: ... 20g m A 5m 9K 5 0 15 15g m 12K 5 0 15 15g m 18K 5 0 15 20g m Connecting cables The power cord should be selected according to the following specifications sheet Appliance Amps Wire Size 5 AWG21 0 75 mm2 10 AWG18 1 0 mm2 13 AWG15 1 5 mm2 18 AWG14 1 6 mm2 25 AWG12 2 0 mm2 30 AWG10 2 5 mm2 Outdoor unit In door unit Pipe length is 15 meters Max be l es s th an 10m Height shoul d Outdoor unit Indoor u...

Page 38: ...location before hanging the unit if the opening on the ceiling has been decided Confirm sizes of the indoor unit and ceiling opening with the attached installation paper pattern Please fix the paper pattern below the body with M5X16 screws 4 Duct OUTDOOR UNIT Do not install the outdoor unit near sources of heat steam or flammable gas Do not install the unit in too windy or dusty places Do not inst...

Page 39: ... screw bolts Timber over thebeam Roof beam Hanging Screw Ceili ng B o lt For finished concrete bricks Install the hanging hook with expansible bolt into the concrete deep to 45 50mm to prevent loose New Concrete Bricks Inlaying or embedding the screw bolts Blade shape Slide insertion insertion Pipe hanging and embedding screw bolt Steel roof beam structure Install the supporting angle steel Overha...

Page 40: ...canvas air conduit may avoid vibration of ceiling board as shown in figure below 10 2 2Drilling a hole in the wall for the piping 1 Decide where to drill the hole in the wall for the piping if necessary according to the position of the mounting plate 2 Install a flexible flange through the hole in the wall to keep the latter intact and clean The hole must slope downwards towards the exterior Note ...

Page 41: ...oint When extending the rolled pipe straighten the pipe by unwinding it gently as shown in the picture 10 2 6Connections to the indoor unit 1 Remove the indoor unit pipe cap check that there is no debris inside 2 Insert the fare nut and create a flange at the extreme end of the connection pipe 3 Tighten the connections by using two wrenches working in opposite directions 10 2 7Indoor unit condense...

Page 42: ...Connecting the pipe of outdoor unit Screw the flare nuts to the outdoor unit coupling with the same tightening procedures described for the indoor unit Note If the tightening torque is not sufficient there will probably be some leakage With excessive tightening torque there will also be some leakage as the flange could be damaged 10 2 10 Bleeding Air and humidity left inside the refrigerant circui...

Page 43: ...1 2 The structure of ODU PCB ONE TO 2 TYPE Motor Communication Filter circuit for heavy current Switch power supply LP HP Communication Communication Sensor circuit Expansion valve 4 way valve Compressor driving Rectifying filtering circuit PFC EEPROM Switch power supply Communication ...

Page 44: ...N6 2 if loose or not plugged in please connect again 2 Room temperature sensor IRT and Indoor pipe coil temperature sensor IPT damage short or broken Solution check the resistance of the sensor wall type R 25 5 kΩ cassette and duct type R 25 5 kΩ if short or broken please replace it Expansion valve Sensor circuit LP HP Motor Compressor driving Switch power supply Communication Filter circuit for h...

Page 45: ...1 The indoor motor connection terminal loose or not plugged in Solution Check the connecter of indoor motor and slot CN3 and CN4 if loose or not plugged in please connect again 2 The indoor motor damage Solution Check and replace the motor 3 The indoor main PCB damage Solution Replace the indoor main PCB OK Fail ...

Page 46: ...ce the outdoor PCB 11 3 4 Display E8 Reasons 1 Outdoor discharge pipe temp sensor connection terminal loose or not plugged in Solution Check the connecter of sensor and slot if loose or not plugged in please connect again 2 Outdoor pipe temp sensor damage Solution Check and replace the sensor 3 Outdoor PCB damage Solution Check and replace the outdoor PCB 11 3 5 Display E0 E5 Reason Indoor outdoor...

Page 47: ...ltage is normal measure the voltage between the outdoor terminal 1 and N If the voltage change occurs between 0 12V change pulse voltage but there is no 24V please replace the outdoor PCB 4 If the 1 1A 1B 1C 1D N voltage is normal measure the voltage between the outdoor terminal 1 and N If the voltage has no change firstly replace the indoor main PCB If the fault remains unsolved replace the outdo...

Page 48: ...utdoor PCB drive circuit damage Solution Re energize and check the protection code on display Firstly display P0 1 If this code is displayed when the compressor is started for several seconds or even not started check the compressor connection for correctness if no insert wrong replace outdoor PCB 2 Check if the outdoor module is tightly installed onto the radiating fins and if the silicone is app...

Page 49: ... even not started check the compressor connection for correctness if no insert wrong replace outdoor PCB 11 3 8 Display EU Reason Voltage sensor damage Solution Please replace outdoor PCB 11 3 9 Display EE Reason EEPROM fault Solution Shut down power supply and reenergize it if the fault remains there check the EEPROM installation if no problem please replace outdoor PCB 11 3 10 Display E4 Reason ...

Page 50: ...eplace the sensor or add some gas 11 3 13 Display PA Reason Two or three machine modes collide Solution Check whether one machine run in cooling another machine run in heating or other model 11 3 14 Display D3 Reason Water full This only apply to cassette or duct type Solution Check and let water drain 11 13 15 Display CL Cause Air filter duty the unit operation Cumulative time 500 hours the contr...

Page 51: ...heat exchange Check the refrigerant amount Check the installation condition Installation again P9 Use the remote operates the air conditioner Does compressor start up No Does the wire connects right No Connects wire again Yes Open Does low or high press valve opened Operates again after 3 Mins Yes Yes No Compressor star up Yes Does indoor unit LED display error code Normal No Replace the inverter ...

Page 52: ...ad wire on PWB Replace PWB Cooling mode Check compressor Modify compressor terminal marking Replace PWB Does compressor rotates Replace compressor Check indoor exchange sensor and discharge sensor Modify or replace the sensor Check outdoor exchange sensor and discharge sensor Modify or replace the sensor Check indoor heat exchange Check outdoor heat exchange Clean indoor heat exchange Clean outdoo...

Page 53: ...blink Check terminal L N voltage Yes No Check the rectifier bridge fast recovery diode FRD and IGBT Solve as E0 Check wire connected and replace indoor PCB Normal Abnormal Replace PFC board or outdoor PCB assembly Test the DC voltage between DC and DC Damage Normal If the voltage is approx 300V If the voltage is approx zero Replace power supply board or outdoor PCB assembly Replace PFC board or ou...

Page 54: ... 765 14 27 567 4 219 31 3 981 2 192 76 0 895 0 746 13 26 239 4 186 32 3 836 2 146 77 0 869 0 728 12 24 984 4 152 33 3 697 2 101 78 0 843 0 710 11 23 795 4 117 34 3 563 2 057 79 0 819 0 692 10 22 671 4 082 35 3 435 2 012 80 0 795 0 675 9 21 606 4 045 36 3 313 1 969 81 0 773 0 658 8 20 598 4 008 37 3 195 1 926 82 0 751 0 641 7 19 644 3 969 38 3 082 1 883 83 0 729 0 625 6 18 732 3 930 39 2 974 1 842 ...

Page 55: ... 79 15 34 86 1 985 2 047 2 109 21 170 7 192 5 217 33 13 25 14 18 15 17 87 1 922 1 983 2 045 20 161 6 182 1 205 34 12 72 13 6 14 54 88 1 861 1 922 1 983 19 153 1 172 3 193 7 35 12 21 13 05 13 93 89 1 802 1 862 1 923 18 145 163 1 183 2 36 11 72 12 52 13 36 90 1 746 1 805 1 865 17 137 5 154 4 173 2 37 11 26 12 01 12 81 91 1 692 1 75 1 809 16 130 3 146 2 163 9 38 10 82 11 53 12 29 92 1 639 1 697 1 755...

Page 56: ... 117 0 7837 0 8233 0 8641 10 36 04 39 39 43 01 64 4 101 4 288 4 479 118 0 7623 0 8012 0 8413 11 34 42 37 59 41 65 3 961 4 139 4 32 119 0 7415 0 7798 0 8193 12 32 89 35 87 39 1 66 3 827 3 995 4 167 120 13 31 43 34 25 37 29 67 3 698 3 858 4 021 121 0 702 0 7386 0 7773 14 30 04 32 71 35 58 68 122 0 6631 0 7195 0 7572 15 29 72 31 24 33 95 69 123 0 6649 0 7007 0 7378 16 70 3 339 3 476 3 616 124 0 6472 ...

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