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86

15.5.26. F95 (Cooling High Pressure Abnormality)

Malfunction Decision Conditions

During operation of cooling, when outdoor unit heat exchanger high temperature data (61

C) is detected by the outdoor pipe

temperature sensor.

Malfunction Caused

• Air short circuit at indoor unit
• Dust accumulation on the indoor unit heat exchanger
• 2/3 way valve closed
• Faulty outdoor unit fan motor
• Excessive refrigerant
• Clogged expansion valve or strainer
• Faulty outdoor pipe temperature sensor
• Faulty outdoor unit PCB

Troubleshooting

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Содержание CS-E24MKES

Страница 1: ... Indoor Unit Remote Control 10 5 2 Outdoor Unit 11 6 Refrigeration Cycle Diagram 12 7 Block Diagram 13 8 Wiring Connection Diagram 14 8 1 Indoor Unit 14 8 2 Outdoor Unit 15 9 Electronic Circuit Diagram 17 9 1 Indoor Unit 17 9 2 Outdoor Unit 18 10 Printed Circuit Board 20 10 1 Indoor Unit 20 10 2 Outdoor Unit 23 11 Installation Instruction 25 11 1 Select the Best Location 25 11 2 Indoor Unit 26 11 ...

Страница 2: ...on 54 15 Troubleshooting Guide 55 15 1 Refrigeration Cycle System 55 15 2 Relationship Between The Condition Of The Air Conditioner And Pressure And Electric Current 56 15 3 Breakdown Self Diagnosis Function 57 15 4 Error Codes Table 58 15 5 Self diagnosis Method 61 16 Disassembly and Assembly Instructions 91 16 1 Indoor Electronic Controllers Cross Flow Fan and Indoor Fan Motor Removal Procedures...

Страница 3: ...ring standard regulation and the installation instruction An independent circuit and single outlet must be used If electrical circuit capacity is not enough or defect found in electrical work it will cause electrical shock or fire 9 This equipment is strongly recommended to be installed with Earth Leakage Circuit Breaker ELCB or Residual Current Device RCD Otherwise it may cause electrical shock a...

Страница 4: ... method If the flare nut is over tightened after a long period the flare may break and cause refrigerant gas leakage 4 Do not touch outdoor unit air inlet and aluminium fin It may cause injury 5 Select an installation location which is easy for maintenance 6 Pb free solder has a higher melting point than standard solder typically the melting point is 50 F 70 F 30 C 40 C higher Please use a high te...

Страница 5: ...rent A 12 1 15 0 Input Power W 450 2 66k 3 20k 450 3 30k 3 75k COP W W 2 18 3 23 3 09 2 18 2 91 2 93 Kcal hW 1 87 2 78 2 66 1 87 2 50 2 52 Power Factor 96 96 Indoor Noise H L QLo dB A 47 38 35 48 38 35 Power Level dB 63 64 Outdoor Noise H L dB A 52 53 Power Level dB 66 67 Low Temp Capacity kW I Power W COP 7 17 2 83k 2 53 7 97 3 32k 2 40 Extr Low Temp Capacity kW I Power W COP 6 13 2 86k 2 14 6 77...

Страница 6: ...1 7 16 795 31 5 16 Width I D O D mm inch 1070 42 5 32 875 34 15 32 1070 42 5 32 875 34 15 32 Depth I D O D mm inch 235 9 9 32 320 12 5 8 235 9 9 32 320 12 5 8 Weight Net I D O D kg lb 12 26 65 143 12 26 66 132 P I P I N G Pipe Diameter Liquid Gas mm inch 6 35 1 4 15 88 5 8 6 35 1 4 15 88 5 8 Standard Length m ft 5 0 16 4 5 0 16 4 Length Range min max m ft 3 9 8 30 98 4 3 9 8 30 98 4 I D O D Height...

Страница 7: ...mperature of 20 C outdoor 2 1 C 4 Heating extreme low temperature capacity Input Power and COP measured at 230 V indoor temperature of 20 C outdoor 7 8 C 5 Specifications are subjected to change without prior notice for further improvement Thermostat Electronic Control Electronic Control Protection Device Electronic Control Electronic Control Dry Bulb Wet Bulb Dry Bulb Wet Bulb Indoor Operation Ra...

Страница 8: ...10A Long Installation Piping CS CU E24 28MK long piping up to 30 meter Easy to use remote control Quality Improvement Random auto restart after power failure for safety restart operation Gas leakage protection Prevent compressor reverse cycle Inner protector to protect compressor Noise prevention during soft dry operation Operation Improvement Quiet mode to reduce the indoor unit operating sound P...

Страница 9: ...9 4 Location of Controls and Components 4 1 Indoor Unit 4 2 Outdoor Unit 4 3 Remote Control ...

Страница 10: ...10 5 Dimensions 5 1 Indoor Unit Remote Control ...

Страница 11: ...11 5 2 Outdoor Unit ...

Страница 12: ...12 6 Refrigeration Cycle Diagram ...

Страница 13: ...13 7 Block Diagram ...

Страница 14: ...14 8 Wiring Connection Diagram 8 1 Indoor Unit ...

Страница 15: ...15 8 2 Outdoor Unit 8 2 1 CU E24MKE ...

Страница 16: ...16 8 2 2 CU E28MKE ...

Страница 17: ...17 9 Electronic Circuit Diagram 9 1 Indoor Unit ...

Страница 18: ...18 9 2 Outdoor Unit 9 2 1 CU E24MKE ...

Страница 19: ...19 9 2 2 CU E28MKE ...

Страница 20: ...20 10 Printed Circuit Board 10 1 Indoor Unit 10 1 1 Main Printed Circuit Board ...

Страница 21: ...21 10 1 2 Power Printed Circuit Board 10 1 3 Indicator Printed Circuit Board 10 1 4 Receiver Printed Circuit Board 10 1 5 High Voltage Power Supply Printed Circuit Board ...

Страница 22: ...22 10 1 6 Comparator Printed Circuit Board 10 1 7 Human Activity Sensor Printed Circuit Board ...

Страница 23: ...23 10 2 Outdoor Unit 10 2 1 Main Printed Circuit Board ...

Страница 24: ...24 10 2 2 Power Printed Circuit Board ...

Страница 25: ...ructed There should not be any animal or plant which could be affected by hot air discharged Keep the spaces indicated by arrows from wall ceiling fence or other obstacles Do not place any obstacles which may cause a short circuit of the discharged air If piping length is over the piping length for additional gas additional refrigerant should be added as shown in the table Example For E9 If the un...

Страница 26: ...le with ø70 mm hole core drill Line according to the left and right side of the installation plate The meeting point of the extended line is the center of the hole Another method is by putting measuring tape at position as shown in the diagram above The hole center is obtained by measuring the distance namely 128 mm for left and right hole respectively Drill the piping hole at either the right or ...

Страница 27: ...27 1 For the right rear piping 2 For the right and right bottom piping 3 For the embedded piping This can be used for left rear piping and bottom piping also ...

Страница 28: ... 3 Bind all the indoor and outdoor connection cable with tape and route the connection cable via the escapement 4 Remove the tapes and connect the connection cable between indoor unit and outdoor unit according to the diagram below 5 Secure the connecting cable onto the control board with the holder clamper Ensure the colour of wires of outdoor unit and the terminal Nos are the same to the indoor ...

Страница 29: ... cutter and then remove the burrs 2 Remove the burrs by using reamer If burrs is not removed gas leakage may be caused Turn the piping end down to avoid the metal powder entering the pipe 3 Please make flare after inserting the flare nut onto the copper pipes ...

Страница 30: ...ble Connecting the Piping to Outdoor Decide piping length and then cut by using pipe cutter Remove burrs from cut edge Make flare after inserting the flare nut located at valve onto the copper pipe Align center of piping to valve and then tighten with torque wrench to the specified torque as stated in the table Connecting the Piping to Outdoor Multi Decide piping length and then cut by using pipe ...

Страница 31: ... to OPEN using a hexagonal wrench 4 mm 8 Mount valve caps onto the 2 way valve and the 3 way valve Be sure to check for gas leakage 11 3 4 Connect the Cable to the Outdoor Unit 1 Remove the control board cover from the unit by loosening the screw 2 Cable connection to the power supply through Isolating Devices Disconnecting means Connect approved type polychloroprene sheathed power supply cord 3 x...

Страница 32: ... contact gap Earth wire shall be Yellow Green Y G in colour and longer than other AC wires for safety reason 11 3 5 Piping Insulation 1 Please carry out insulation at pipe connection portion as mentioned in Indoor Outdoor Unit Installation Diagram Please wrap the insulated piping end to prevent water from going inside the piping 2 If drain hose or connecting piping is in the room where dew may for...

Страница 33: ... settings and the operation environment The final shifted value will be used as internal setting temperature and it is updated continuously whenever the electrical power is supplied to the unit 12 1 2 Cooling Operation 12 1 2 1 Thermostat control Compressor is OFF when Intake Air Temperature Internal Setting Temperature 1 5 C continue for 3 minutes Compressor is ON after waiting for 3 minutes if t...

Страница 34: ...dgment onwards If indoor intake temperature remote control setting temperature 3 C if previous operate in DRY mode then continue in DRY mode otherwise COOL mode is decided If 2 C indoor intake temperature remote control setting temperature 3 C maintain with previous mode If indoor intake temperature remote control setting temperature 2 C HEAT mode is decided 12 1 6 Indoor Fan Motor Operation A Bas...

Страница 35: ...th one fan speed only It starts when compressor starts operation and it stops 30 seconds after compressor stops operation 12 2 Airflow Direction 1 There are two types of airflow vertical airflow directed by horizontal vane and horizontal airflow directed by vertical vanes 2 Control of airflow direction can be automatic angles of direction is determined by operation mode heat exchanger temperature ...

Страница 36: ...conditioner is stopped using remote control the vane will shift to close position 12 2 2 Horizontal Airflow 1 Automatic horizontal airflow direction can be set using remote control the vane swings left and right within the angles as stated below It does not swing during fan motor stop For heating mode operation the angle of the vane depends on the indoor heat exchanger temperature as Figure 1 belo...

Страница 37: ...ore than 3dB 2 Fan speed for quiet operation is reduced from setting fan speed 12 3 1 Quiet operation Heating A Purpose To provide quiet heating operation compare to normal operation B Control condition a Quiet operation start condition When POWERFUL QUIET button at remote control is pressed POWERFUL QUIET LED illuminates b Quiet operation stop condition 1 When one of the following conditions is s...

Страница 38: ...han the set time as shown below 12 5 2 OFF Timer Control OFF Timer 1 and OFF Timer 2 can be set using remote control the unit with timer set will stop operate at set time 12 6 Auto Restart Control 1 When the power supply is cut off during the operation of air conditioner the compressor will re operate within three to four minutes there are 10 patterns between 2 minutes 58 seconds and 3 minutes 52 ...

Страница 39: ...ops condition when any of the following condition is fulfilled When OFF ON button is selected During any operation with Patrol PATROL e ion button is pressed When OFF Timer activates To disable the Patrol Operation during unit starts default with OFF ON button Press Set button continuously for 15 seconds by using pointer during Air Conditioner is OFF condition to enter internal setting mode Press ...

Страница 40: ...erate for 30 seconds e ion Control e ion operation starts condition When dirtiness at level 2 2 minutes after stabilization time 4 hours at level 0 e ion operation time If dirtiness level improves from level 2 to level 1 the unit carries out level change after 60 seconds When dirtiness level returns to level 0 continuously for 11 minutes or more e ion operation stops Dirtiness Level and fan speed ...

Страница 41: ...is selected e ion individual operation starts b e ion operation stop condition When OFF ON button is pressed to stop the operation When PATROL e ion button is pressed When OFF Timer activates c e ion operation pause condition When indoor fan stop during deice odor cut control thermostat off etc e ion operation resume after indoor fan restarts When indoor intake temperature 40 C e ion operation res...

Страница 42: ...mer activates during any operation all operation stops and the latest e ion operation status is saved d Indicator When e ion operation starts e ion indicator ON e e ion Check Mode e ion abnormality check mode Purpose is to improve sensor serviceability when sensor is malfunction 1 Control starting condition When all of the conditions are formed Not in Patrol Demo mode e ion operation mode ON When ...

Страница 43: ...peration OFF Timer activates Power supply reset iii e ion breakdown Judgement Method When hi feedback voltage at microcontroller supplied to filter during e ion stop due to PCB or filter s high voltage power supply damage Operations except e ion continue Both Timer indicator and e ion indicator blink Troubleshooting Method Press PATROL e ion button or OFF ON button to stop the operation Change mai...

Страница 44: ...F when OFF TIMER activates When unit is OFF by AUTO OFF ON button at indoor unit When POWERFUL QUIET or MILD DRY operation activates When button is pressed ECO NAVI start condition When ECO NAVI button is pressed ECO NAVI stop conditions When ECO NAVI button is pressed again When unit is OFF by OFF ON button When unit is OFF when OFF TIMER activates When unit is OFF by AUTO OFF ON button at indoor...

Страница 45: ...ture the system will analyze the human position away from the indoor unit 12 11 5 Target Area and Position Judgment The system will judge the indoor unit installation position according to human activity Non Living Area Non Living Area at Position A Indoor unit installed at left side of the room Non Living Area at Position C Indoor unit installed at right side of the room Other than above Indoor u...

Страница 46: ...the horizontal airflow direction louver will swing left and right 12 11 8 Setting Temperature and Fan Speed Shift Cooling Dual Sensor Target area Horizontal airflow direction louver position Left installation Center installation Right installation A 2 1 1 B 5 5 4 C 3 3 3 Operation mode Activity level difference Louver stop time Cooling 1 level Higher Activity level 60 seconds Lower Activity level ...

Страница 47: ...ation details The target area will maintain for 5 seconds before changeover to next detection If no activity detection the last action will maintain for 30 seconds before changeover to human absence status Infrared Sensor Human Activity Sensor Vane Position Fan Speed Sensor 1 Sensor 2 Left Center Right 1 0 5 HI 1 1 Auto Swing HI 0 1 1 HI 0 0 Auto Swing LO ...

Страница 48: ...abnormality counter reached 4 times H59 occurred No TIMER indicator blinking When error code happened the unit is able to operate without AUTO COMF ECO NAVI 12 11 11 Infrared Sensor Check Mode To enable Infrared sensor abnormality check mode During ECO NAVI AUTO COMF is ON when CHECK signal received if either sensors has abnormality the 4 times abnormality counter is ignored ECO NAVI Indicator wil...

Страница 49: ... temperature rises to 110 C compressor operation will stop immediately 2 Compressor operation restarts after three minutes the temperature decreases to 95 C 3 If this condition repeats continuously 4 times within 20 minutes timer LED will be blinking F96 is indicated B DC Peak Current Control 1 When electric current to IPM exceeds set value of 30 0 5 0 A the compressor will stop operate Then opera...

Страница 50: ... Indoor suction temperature indoor piping temperature is below 4 C During Heating operations Indoor piping temperature indoor suction is under 5 C b Control contents Compressor stops and restart after 3 minutes If the conditions above happen 2 times within 20 minutes the unit will Stop operation Timer LED blinks and F91 indicated 13 1 6 Low Frequency Protection Control 1 When the compressor operat...

Страница 51: ...gly in this control 13 2 4 Freeze Prevention Control 1 1 When indoor heat exchanger temperature is lower than 0 C continuously for six minutes compressor will stop operating 2 Compressor will resume its operation three minutes after the indoor heat exchanger is higher than 5 C 3 At the same time indoor fan speed will be higher than during its normal operation 4 If indoor heat exchanger temperature...

Страница 52: ...to avoid compressor overloading 13 3 3 Overload Protection Control The compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown in below figures 13 3 4 Cold Draught Prevention Control When indoor pipe temperature is low cold draught operation starts where indoor fan speed will be reduced 13 3 5 Deice Operation When outdoor pipe temperature and outdoor...

Страница 53: ...control to set change the advance setting of air conditioner operation 3 REMOTE CONTROL NUMBER SWITCH MODE The Remote Control Number Switch Mode will be activated if the Auto OFF ON button is pressed continuously for more than 11 seconds 3 beep sounds will occur at 11th seconds to identify the Remote Control Number Switch Mode is in standby condition and press AC RESET button and then press any bu...

Страница 54: ... SET button continuously for 10 seconds by using pointer Press TMER SET button until a beep sound is heard as confirmation of transmission code change To change the air quality sensor sensitivity Press and release by using pointer Press the Timer Decrement button to select sensitivity 1 Low Sensitivity 2 Standard Default 3 Hi Sensitivity Confirm setting by pressing Timer Set button a Beep sound wi...

Страница 55: ... problems before inspecting the refrigeration cycle Such problems include insufficient insulation problem with the power source malfunction of a compressor and a fan The normal outlet air temperature and pressure of the refrigeration cycle depends on various conditions the standard values for them are shown in the table on the right ...

Страница 56: ...es after an operation is started Cooling Mode Heating Mode Condition of the air conditoner Low Pressure High Pressure Electric current during operation Low Pressure High Pressure Electric current during operation Insufficient refrigerant gas leakage Clogged capillary tube or Strainer Short circuit in the indoor unit Heat radiation deficiency of the outdoor unit Inefficient compression ...

Страница 57: ...unit is pressed To display memorized error Protective operation status 1 Turn power on 2 Press the CHECK button on the remote controller continuously for 5 seconds 3 will be displayed on the remote controller display Note Display only for No transmitting signal no receiving sound and no Power LED blinking 4 Press the TIMER or button on the remote controller The code H00 no abnormality will be disp...

Страница 58: ...r block H23 Indoor heat exchanger temperature sensor abnormality Continuous for 5s Indoor heat exchanger temperature sensor open or short circuit Indoor heat exchanger temperature sensor lead wire and connector H25 Indoor E Ion abnormality Port is ON for 10s during E Ion off E Ion PCB H27 Outdoor air temperature sensor abnormality Continuous for 5s Outdoor air temperature sensor open or short circ...

Страница 59: ...r lock or feedback abnormal Outdoor fan motor lead wire and connector fan motor lock or block H98 Indoor high pressure protection Indoor high pressure protection Heating Check indoor heat exchanger air filter dirty air circulation short circuit H99 Indoor operating unit freeze protection Indoor freeze protection Cooling Check indoor heat exchanger air filter dirty air circulation short circuit F11...

Страница 60: ... 3 times happen within 30 minutes Compressor overheat Insufficient refrigerant F98 Total running current protection 3 times happen within 20 minutes Total current protection Check refrigeration system power source or compressor lock F99 Outdoor direct current DC peak detection Continuous happen for 7 times Power transistor module current protection Power transistor module faulty or compressor lock...

Страница 61: ...transmission is checked whether it is normal Malfunction Caused Faulty indoor unit PCB Faulty outdoor unit PCB Indoor unit outdoor unit signal transmission error due to wrong wiring Indoor unit outdoor unit signal transmission error due to breaking of wire in the connection wires between the indoor and outdoor units Indoor unit outdoor unit signal transmission error due to disturbed power supply w...

Страница 62: ...are interconnected Malfunction Caused Wrong models interconnected Wrong indoor unit or outdoor unit PCBs mounted Indoor unit or outdoor unit PCBs defective Indoor outdoor unit signal transmission error due to wrong wiring Indoor outdoor unit signal transmission error due to breaking of wire 3 in the connection wires between the indoor and outdoor units Troubleshooting ...

Страница 63: ...ction Decision Conditions During startup and operation of cooling and heating the temperatures detected by the indoor intake air temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Страница 64: ...n Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor compressor temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Страница 65: ...ions A current transformer CT is detected by checking the compressor running frequency rated frequency and CT detected input current less than 0 65A for continuously 20 seconds Malfunction Caused CT defective Outdoor PCB defective Compressor defective low compression Troubleshooting ...

Страница 66: ...etermine abnormal fan motor feedback of rotation 2550rpm or 50rpm Malfunction Caused Operation stops due to short circuit inside the fan motor winding Operation stops due to breaking of wire inside the fan motor Operation stops due to breaking of fan motor lead wires Operation stops due to Hall IC malfunction Operation error due to faulty indoor unit PCB Troubleshooting ...

Страница 67: ... Decision Conditions During startup and operation of cooling and heating the temperatures detected by the indoor heat exchanger temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Страница 68: ...m Abnormal Malfunction Decision Conditions During standby of cooling and heating operation e ion breakdown occurs and air conditioner stops operation Malfunction Caused Faulty indoor main PCB Faulty indoor e ion power module Troubleshooting ...

Страница 69: ...ction Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor air temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Страница 70: ...ction Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor pipe temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Страница 71: ...tion Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor discharge pipe temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Страница 72: ...nction Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor heat exchanger temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Страница 73: ...alfunction Decision Conditions The supply power is detected for its requirement by the indoor outdoor transmission Malfunction Caused Wrong models interconnected Wrong indoor unit and outdoor unit PCBs used Indoor unit or outdoor unit PCB defective Troubleshooting ...

Страница 74: ...ction Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor heat sink temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Страница 75: ...Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor gas pipe temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Страница 76: ...ction Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor liquid pipe temperature sensor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Страница 77: ...lity Malfunction Decision Conditions If Patrol sensor feedback is 0V or 5V continuous for 6 hours Error will display only when the Patrol operation is ON Malfunction Caused Faulty connector connection Faulty Patrol sensor Troubleshooting ...

Страница 78: ...eration is used to determine abnormal fan motor Malfunction Caused Operation stops due to short circuit inside the fan motor winding Operation stops due to breaking of wire inside the fan motor Operation stops due to breaking of fan motor lead wires Operation stops due to Hall IC malfunction Operation error due to faulty outdoor unit PCB Troubleshooting ...

Страница 79: ...ature detected by the indoor pipe temperature sensor is above 60 C Malfunction Caused Air short circuit at indoor unit Clogged indoor unit air filter Dust accumulation on the indoor unit heat exchanger 2 3 way valve closed Faulty indoor unit fan motor Excessive refrigerant Clogged expansion valve or strainer Faulty indoor pipe temperature sensor Faulty indoor unit PCB Troubleshooting ...

Страница 80: ...l takes place when indoor pipe temperature is lower than 2 C Malfunction Caused Air short circuit at indoor unit Clogged indoor unit air filter Dust accumulation on the indoor unit heat exchanger 2 3 way valve closed Faulty indoor unit fan motor Refrigerant shortage refrigerant leakage Clogged expansion valve or strainer Faulty indoor pipe temperature sensor Faulty indoor unit PCB Troubleshooting ...

Страница 81: ...onditions When heating operation when indoor pipe temperature is below 10 C When cooling operation when indoor pipe temperature is above 45 C Malfunction Caused Connector in poor contact Faulty sensor Faulty outdoor unit PCB 4 way valve defective Troubleshooting ...

Страница 82: ...rature and indoor pipe temperature is above 10 C or indoor pipe temperature is below 1 0 C Remark When the indoor standby unit is freezing the outdoor unit transfers F17 error code to the corresponding indoor unit and H39 to other indoor unit s Malfunction Caused Wrong wiring connection Faulty sensor Faulty expansion valve Troubleshooting ...

Страница 83: ...peration of cooling and heating when Power Factor Correction PFC protection circuitry at the outdoor unit main PCB senses abnormal high DC voltage level Malfunction Caused DC voltage peak due to power supply surge DC voltage peak due to compressor windings not uniform Faulty outdoor PCB Troubleshooting ...

Страница 84: ...king the CT detected input current value and the compressor running frequency During startup and operating of cooling and heating input current 8 78 256 A Hz x compressor running frequency 0 25 Gas shortage detection 2 A gas shortage is detected by checking the difference between indoor pipe temperature and indoor intake air temperature during cooling and heating Malfunction Caused Faulty indoor i...

Страница 85: ...ion Decision Conditions A compressor rotation failure is detected by checking the compressor running condition through the position detection circuit Malfunction Caused Compressor terminal disconnect Faulty Outdoor PCB Faulty compressor Troubleshooting ...

Страница 86: ...ure data 61 C is detected by the outdoor pipe temperature sensor Malfunction Caused Air short circuit at indoor unit Dust accumulation on the indoor unit heat exchanger 2 3 way valve closed Faulty outdoor unit fan motor Excessive refrigerant Clogged expansion valve or strainer Faulty outdoor pipe temperature sensor Faulty outdoor unit PCB Troubleshooting ...

Страница 87: ...vated Heat Sink Overheating During operation of cooling and heating when heat sink temperature data 90 C is detected by the heat sink temperature sensor Malfunction Caused IPM overheats due to short circuit of hot discharge air flow IPM overheats due to defective of outdoor fan motor IPM overheats due to defective of internal circuitry of IPM IPM overheats due to defective IPM temperature sensor M...

Страница 88: ...ling and heating when compressor tank temperature data 112 C is detected by the compressor tank temperature sensor Malfunction Caused Faulty compressor tank temperature sensor 2 3 way valve closed Refrigerant shortage refrigerant leakage Faulty outdoor unit PCB Faulty compressor Troubleshooting ...

Страница 89: ...on of cooling and heating when an input over current X value in Total Running Current Control is detected by checking the input current value being detected by current transforme r CT with the compressor running Malfunction Caused Excessive refrigerant Faulty outdoor unit PCB Troubleshooting ...

Страница 90: ...ubleshooting Checking the power transistor Never touch any live parts for at least 10 minutes after turning off the circuit breaker If unavoidable necessary to touch a live part make sure the power transistor s supply voltage is below 50V using the tester For the UVW make measurement at the Faston terminal on the board of the relay connector Tester s negative terminal Power transistor UVW Power tr...

Страница 91: ...or Removal Procedures 16 1 1 To remove front grille 16 1 2 To remove horizontal vane WARNING High Voltage are generated in the electrical parts area by the capacitor Ensure that the capacitor has discharged sufficiently before proceeding with repair work Failure to heed this caution may result in electric shocks ...

Страница 92: ...92 16 1 3 To remove power electronic controller ...

Страница 93: ...93 16 1 4 To remove discharge grille 16 1 5 To remove control board ...

Страница 94: ...94 16 1 6 To remove cross flow fan and indoor fan motor ...

Страница 95: ...95 ...

Страница 96: ... Panel Fig 1 2 Remove the 8 screws of the Front Panel Fig 2 3 Remove the Top Cover of the Electronic Controller Fig 3 4 Remove the Control Board Fig 4 5 Remove the 6 screws of the Electronic Controller Fig 5 Caution When handling electronic controller be careful of electrostatic discharge ...

Страница 97: ...ration Characteristics 17 1 1 CS E24MKES CU E24MKE Cooling Characteristic at Different Outdoor Air Temperature Condition Indoor room temperature 27 19 C Remote control setting HI FAN COOL 16 C Compressor frequency Fc Voltage 230 V ...

Страница 98: ...98 Cooling Characteristic at Different Piping Length Condition Indoor room temperature 27 19 C 35 C Remote control setting HI FAN COOL 16 C Compressor frequency Fc Voltage 230 V ...

Страница 99: ...99 Heating Characteristic at Different Outdoor Air Temperature Condition Indoor room temperature 20 C Remote control setting HI FAN HEAT 30 C Compressor frequency Fh Voltage 230 V ...

Страница 100: ...100 Heating Characteristic at Different Piping Length Condition Indoor room temperature 20 C 7 6 C Remote control setting HI FAN HEAT 30 C Compressor frequency Fh Voltage 230 V ...

Страница 101: ...7 1 2 CS E28MKES CU E28MKE Cooling Characteristic at Different Outdoor Air Temperature Condition Indoor room temperature 27 19 C Remote control setting HI FAN COOL 16 C Compressor frequency Fc Voltage 230 V ...

Страница 102: ...102 Cooling Characteristic at Different Piping Length Condition Indoor room temperature 27 19 C 35 C Remote control setting HI FAN COOL 16 C Compressor frequency Fc Voltage 230 V ...

Страница 103: ...103 Heating Characteristic at Different Outdoor Air Temperature Condition Indoor room temperature 20 C Remote control setting HI FAN HEAT 30 C Compressor frequency Fh Voltage 230 V ...

Страница 104: ...104 Heating Characteristic at Different Piping Length Condition Indoor room temperature 20 C 7 6 C Remote control setting HI FAN HEAT 30 C Compressor frequency Fh Voltage 230 V ...

Страница 105: ... 5 85 4 71 2 45 22 0 C 8 07 5 55 2 01 7 54 5 34 2 17 7 02 5 15 2 32 6 38 4 91 2 50 Outdoor Temp C Indoor wet bulb temp 30 35 40 46 TC SHC IP TC SHC IP TC SHC IP TC SHC IP 17 0 C 7 59 5 75 2 33 7 09 5 52 2 50 6 59 5 30 2 68 6 00 5 04 2 89 19 0 C 7 65 2 54 19 5 C 8 33 6 02 2 37 7 79 5 79 2 55 7 24 5 57 2 73 6 59 5 30 2 94 22 0 C 9 08 6 25 2 41 8 48 6 01 2 60 7 89 5 79 2 78 7 18 5 53 2 99 TC Total Co...

Страница 106: ...8 Exploded View and Replacement Parts List 18 1 Indoor Unit Note The above exploded view is for the purpose of parts disassembly and replacement The non numbered parts are not kept as standard service parts ...

Страница 107: ... DISCHARGE GRILLE COMPLETE 1 CWE20C3124 24 FULCRUM 2 CWH621103 25 VERTICAL VANE 15 CWE241355 26 CONNECTING BAR 1 CWE261220 27 CONNECTING BAR 1 CWE261158 28 CONNECTING BAR 1 CWE261221 29 CONNECTING BAR 1 CWE261159 30 CONNECTING BAR 1 CWE261160 31 A S MOTOR DC SINGLE 12V 300 OHM 1 CWA98K1015 O 32 A S MOTOR DC SINGLE 12V 300 OHM 1 CWA981241 O 34 CAP DRAIN TRAY 1 CWH521096 35 HORIZONTAL VANE 1 CWE24C1...

Страница 108: ...614780 58 INSTALLATION INSTRUCTION 1 CWF614781 59 OPERATING INSTRUCTION 1 CWF567921 60 ELECTRONIC CONTROLLER COMPARATOR 1 CWA746205 O 61 ELECTRONIC CONTROLLER ECO SENSOR L 1 CWA745791 O 62 ELECTRONIC CONTROLLER ECO SENSOR R 1 CWA746206 O 63 SENSOR COMPLETE ECO 1 CWA50C2759 O 64 LEAD WIRE PCB ECO 1 CWA67C9218 65 CONTROL BOARD CASING FOR PCB ECO 1 CWD93C1108 66 COVER FOR RECEIVER UPPER 1 CWD933022 6...

Страница 109: ...109 18 2 Outdoor Unit 18 2 1 CU E24MKE ...

Страница 110: ...110 18 2 2 CU E28MKE Note The above exploded view is for the purpose of parts disassembly and replacement The non numbered parts are not kept as standard service parts ...

Страница 111: ...WH351057 25 3 WAYS VALVE GAS 1 CWB011363 O 26 2 WAYS VALVE LIQUID 1 CWB021434 O 27 SOUND PROOF BOARD 1 CWH151197 28 TERMINAL COVER 1 CWH171039A 29 NUT TERMINAL COVER 1 CWH7080300J 30 SENSOR COMPLETE COMP TOP 1 CWA50C2185 O 31 HOLDER SENSOR 2 CWH711010 32 V COIL COMPLETE 1 CWA43C2169J O 33 V COIL COMPLETE CWA43C2258 O 34 SENSOR CO COMP TEMP 1 CWA50C2515 O 35 SENSOR CO AIR AND COND TEMP 1 CWA50C2517...

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