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15.4.6

H19 (Indoor Fan Motor – DC Motor Mechanism Locked)

Malfunction Decision Conditions



The rotation speed detected by the Hall IC during fan motor operation is used to determine 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

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Содержание CS-E12NKUAW

Страница 1: ...ring of refrigerant circuit WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general public It does not contain warnings or cautions to advise non technical individuals of potential dangers in attempting to service a product Products powered by electricity should be serviced or repaired only by experienced professional technici...

Страница 2: ...ea of Dry Mode 24 12 6 Quiet Operation Heating 24 12 7 Powerful Mode Operation 25 12 8 Timer Control 25 12 9 Auto Restart Control 25 12 10 Indication Panel 26 13 Operation Control For Multi Split Connection 27 13 1 Cooling operation 27 13 2 Soft Dry Operation 27 13 3 Heating Operation 27 13 4 Automatic Operation 27 13 5 Indoor Fan Motor Operation 28 13 6 Powerful Mode Operation 28 13 7 Auto restar...

Страница 3: ... Current Device RCD Otherwise it may cause electrical shock and fire in case equipment breakdown or insulation breakdown 10 Do not use joint cable for indoor outdoor connection cable Use the specified indoor outdoor connection cable refer to installation instruction CONNECT THE CABLE TO THE INDOOR UNIT and connect tightly for indoor outdoor connection Clamp the cable so that no external force will...

Страница 4: ... the unit it may cause fire 2 Carry out drainage piping as mentioned in installation instructions If drainage is not perfect water may enter the room and damage the furniture 3 Tighten the flare nut with torque wrench according to specified 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 a...

Страница 5: ...11 40 13 65 14 75 11 40 Indoor Noise H L QLo dB A 41 29 26 42 29 26 Power Level dB 57 58 Indoor Fan Type Cross flow fan Material ASG20K1 Motor Type Transistor 8 poles Input Power W 47 0 Output Power W 40 Speed QLo rpm Cooling 620 Heating 750 Lo rpm Cooling 720 Heating 850 Me rpm Cooling 920 Heating 1060 Hi rpm Cooling 1120 Heating 1270 SHi rpm Cooling 1250 Heating 1390 Moisture Removal L h Pt h 0 ...

Страница 6: ...n Range Cooling Maximum F C 114 8 46 78 8 26 Minimum F C 14 0 10 Indoor Operation Range Heating Maximum F C 86 0 30 Minimum F C 60 8 16 Outdoor Operation Range Heating Maximum F C 75 2 24 64 4 18 Minimum F C 5 0 15 3 2 16 1 Cooling capacities are based on indoor temperature of 27 C DRY BULB 80 6 F DRY BULB 19 0 C WET BULB 66 F WET BULB and outdoor air temperature of 35 C DRY BULB 95 F DRY BULB 24 ...

Страница 7: ...room Easy to use remote control Quality Improvement o Random auto restart after power failure for safety restart operation o Gas leakage protection o Prevent compressor reverse cycle o Inner protector to protect Compressor o Noise prevention during soft dry operation Operation Improvement o Quiet mode to reduce the indoor unit operating sound o Powerful mode to reach the desired room temperature q...

Страница 8: ...8 4 Location of Controls and Components 4 1 Indoor Unit 4 2 Outdoor Unit 4 3 Remote Control ...

Страница 9: ...9 5 Dimensions 5 1 Indoor Unit ...

Страница 10: ...10 6 Refrigeration Cycle Diagram ...

Страница 11: ...11 7 Block Diagram ...

Страница 12: ...12 8 Wiring Connection Diagram 8 1 Indoor Unit ...

Страница 13: ...13 9 Electronic Circuit Diagram 9 1 Indoor Unit ...

Страница 14: ...14 10 Printed Circuit Board 10 1 Indoor Unit 10 1 1 Main Printed Circuit Board ...

Страница 15: ...15 10 1 2 Power Printed Circuit Board 10 1 3 Indicator Printed Circuit Board ...

Страница 16: ... obstacles blocking the air circulation A place where air circulation in the room is good A place where drainage can be easily done A place where noise prevention is taken into consideration Do not install the unit near the door way Ensure the spaces indicated by arrows from the wall ceiling fence or other obstacles Mount with the lowest moving parts at least 8 ft 2 4 m above floor or grade level ...

Страница 17: ...s o Always mount the installation plate horizontally by aligning the marking off line with the thread and using a level gauge 2 Drill the piping plate hole with ø2 3 4 ø70 mm hole core drill o 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 di...

Страница 18: ...18 11 2 3 Indoor Unit Installation 11 2 3 1 For the right rear piping 11 2 3 2 For the right bottom piping 11 2 3 3 For the embedded piping This can be used for left rear piping and bottom piping also ...

Страница 19: ...inst chassis 3 Connection cable between indoor unit and outdoor unit should be UL listed or CSA approved 4 conductor wires minimum AWG16 in accordance with local electric codes o Ensure the colour of wires of outdoor unit and terminal number are the same as the indoor s respectively o Earth lead wire shall be Yellow Green Y G in colour and shall be longer than other lead wires as shown in the figu...

Страница 20: ...iping 1 Please cut using pipe cutter and then remove the burrs 2 Remove the burrs by using reamer If burrs are 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 21: ...s are depending on the air conditioner 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 2 7 F Compressor is ON after waiting for...

Страница 22: ... intake temperature remote control setting temperature 5 4 F if previous operate in DRY mode then continue in DRY mode otherwise COOL mode is decided o If 3 6 F indoor intake temperature remote control setting temperature 5 4 F maintain with previous mode o If indoor intake temperature remote control setting temperature 3 6 F HEAT mode is decided 12 2 Indoor Fan Motor Operation 12 2 1 Basic Rotati...

Страница 23: ...here are two types of airflow vertical airflow directed by horizontal vane and horizontal airflow directed by vertical vanes Control of airflow direction can be automatic angles of direction is determined by operation mode heat exchanger temperature and intake air temperature and manual angles of direction can be adjusted using remote control 12 4 1 Vertical Airflow Automatic vertical airflow dire...

Страница 24: ... After off when on back quiet operation is not memorised Control contents o Auto fan speed is change from normal setting to quiet setting of respective fan speed This is to reduce sound of Hi Me Lo for 3dB o Manual fan speed for quiet operation is 1 step from setting fan speed 12 6 Quiet Operation Heating Purpose o To provide quiet heating operation compare to normal operation Control condition o ...

Страница 25: ... time This is to provide a comfortable environment when reaching the set ON time 60 minutes before the set ON time indoor at fan speed of Lo and outdoor fan motor start operation for 30 seconds to determine the indoor intake air temperature and outdoor air temperature in order to judge the operation starting time From the above judgment the decided operation will start operation earlier than the s...

Страница 26: ...n Panel Note If POWER LED is blinking the possible operation of the unit are Hot Start during Deice operation operation mode judgment or ON timer sampling If Timer LED is blinking there is an abnormality operation occurs ...

Страница 27: ...es if the Intake Air Temperature Internal setting temperature Capability supply OFF point 13 3 2 Temperature Sampling Control Temperature sampling is controlled by outdoor unit where room temperature for all power supply ON indoor unit could be obtained When capability supply to the indoor unit is OFF and the compressor is ON during heating operation the indoor fan motor is stopped During this con...

Страница 28: ...temperature will shift lower up to 39 2 F for Cooling Soft Dry or higher up to 42 8 F for heating than remote control setting temperature the powerful operation continue until user cancel the Powerful operation by pressing powerful button again 13 7 Auto restart control When the power supply is cut off during the operation of air conditioner the compressor will re operate between three to four min...

Страница 29: ...e 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 button at remote control to transmit and store the desired transmission code to the EEPROM There are 4 types of...

Страница 30: ...tarted 14 2 Remote Control Button 14 2 1 SET Button To check remote control transmission code and store the transmission code to EEPROM o Press Set button continuously for 10 seconds by using pointer o Press Timer Set button unit a beep sound is heard as confirmation of transmission code change 14 2 2 RESET RC To clear and restore the remote control setting to factory default o Press once to clear...

Страница 31: ...an 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 Normal Pressure and Outlet Air Temperature Standard Gas Pressure PSI kg cm 2 G Outlet air Temperature F Cooling Mode 130 53 174 04 9 12 53 6 60 8 Heating Mode 333 58 420 60 23 29 96 8 113 Condition Indoor fan speed High Outdoor ...

Страница 32: ... Relationship between the condition of the air conditioner and pressure and electric current Carry out the measurements of pressure electric current and temperature fifteen minutes after an operation is started ...

Страница 33: ...3 To Display Memorized Error Code Protective Operation 1 Turn power on 2 Press the CHECK button on the remote control 3 will be displayed on the remote control display Note Display only for No signal transmission no receiving sound and no Power LED blinking 4 Press the TIMER or button on the remote control The code H00 no abnormality will be displayed and signal will be transmit to the main unit 5...

Страница 34: ...34 15 3 Error Code Table ...

Страница 35: ...und heard following by pressing the CHECK button at remote control Although operation forced to stop when abnormality detected emergency operation is possible for certain errors refer to Error Code Table by using remote control or Auto OFF ON button at indoor unit However the remote control signal receiving sound is changed from one beep to four beep sounds ...

Страница 36: ...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 37: ...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 38: ...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 39: ...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 40: ...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 41: ...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 42: ... 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 43: ...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 44: ...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 45: ...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 46: ...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 47: ...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 48: ...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 49: ...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 50: ...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 51: ...uring heating operation the temperature detected by the indoor pipe temperature sensor is above 140 F Malfunction Caused Clogged air filter of the indoor unit Dust accumulation on the indoor unit heat exchanger Air short circuit Detection error due to faulty indoor pipe temperature sensor Detection error due to faulty indoor unit PCB Troubleshooting ...

Страница 52: ...n control takes place when indoor pipe temperature is lower than 35 6 F Malfunction Caused Clogged air filter of the indoor unit Dust accumulation on the indoor unit heat exchanger Air short circuit Detection error due to faulty indoor pipe temperature sensor Detection error due to faulty indoor unit PCB Troubleshooting ...

Страница 53: ...function Decision Conditions When cooling operation when indoor pipe temperature or indoor heat exchanger temperature sensor is above 113 F Malfunction Caused Faulty connector connection Faulty indoor pipe temperature sensor Faulty indoor main PCB Troubleshooting ...

Страница 54: ...rature and indoor pipe temperature is above 50 F or indoor pipe temperature is below 30 2 F 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 55: ...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 56: ...cooling and heating operation running current 0 65A I 1 65A During cooling indoor intake indoor pipe 39 2 F Malfunction Caused Refrigerant shortage refrigerant leakage Poor compression performance of compressor 2 3 way valve closed Detection error due to faulty indoor intake air or indoor pipe temperature sensors Troubleshooting ...

Страница 57: ...alfunction Decision Conditions A compressor rotation failure is detected by checking the compressor running condition through the position detection circuit Malfunction Caused Compressor terminal disconnect Outdoor PCB malfunction Troubleshooting ...

Страница 58: ...is detected by the outdoor pipe temperature sensor Malfunction Caused Outdoor pipe temperature rise due to short circuit of hot discharge air flow Outdoor pipe temperature rise due to defective of outdoor fan motor Outdoor pipe temperature rise due to defective outdoor pipe temperature sensor Outdoor pipe temperature rise due to defective outdoor unit PCB Troubleshooting ...

Страница 59: ...ature data 212 F is detected by the IPM 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 Troubleshooting ...

Страница 60: ...n of cooling and heating when compressor tank temperature data 233 6 F is detected by the compressor tank temperature sensor Malfunction Caused Refrigerant shortage refrigerant leakage 2 3 way valve closed Detection error due to faulty compressor tank temperature sensor Troubleshooting ...

Страница 61: ...detected by checking the input current value being detected by current transformer CT with the compressor running Malfunction Caused Over current due to compressor failure Over current due to defective outdoor unit PCB Over current due to defective inverter main circuit electrolytic capacitor Over current due to excessive refrigerant Troubleshooting ...

Страница 62: ...door unit PCB Troubleshooting 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 transi...

Страница 63: ...citor Ensure that the capacitor has discharged sufficiently before proceeding with repair work Failure to heed this caution may result in electric shocks 16 1 Indoor Electronic Controllers Cross Flow Fan and Indoor Fan Motor Removal Procedures 16 1 1 To remove front grille 16 1 1 1 To remove power electronic controller ...

Страница 64: ...64 16 1 1 2 To remove discharge grille ...

Страница 65: ...65 16 1 1 3 To remove control board 16 1 1 4 To remove cross flow fan and indoor fan motor ...

Страница 66: ...66 ...

Страница 67: ...7 Exploded View and Replacement Parts List 17 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 68: ... 1 CWE261152 28 CONNECTING BAR 1 CWE261154 29 CONNECTING BAR 1 CWE261155 30 CONNECTING BAR 1 CWE261153 31 AIR SWING MOTOR 1 CWA981240 O 33 CAP DRAIN TRAY 1 CWH521096 34 HORIZONTAL VANE COMPLETE 1 CWE24C1268 35 REMOTE CONTROL COMPLETE 1 CWA75C3724 O 36 FRONT GRILLE COMPLETE 1 CWE11C5744 O 37 INTAKE GRILLE COMPLETE 1 CWE22C1507 O 38 GRILLE DOOR COMPLETE 1 CWE14C1029 39 AIR FILTER 2 CWD001279 O 40 SC...

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