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Panasonic CS-E12LKEW Service Manual Download Page 113

113

16.4.20. H99 (Indoor Freeze Prevention Protection: Cooling or Soft Dry)

Error code will not display (no TIMER LED blinking) but store in EEPROM

Malfunction Decision Conditions

Freeze prevention control takes place (when indoor pipe temperature is lower than 2

e

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

Summary of Contents for CS-E12LKEW

Page 1: ...2LKE 3 CS E15LKEW CU E15LKE CS E18LKEW CU E18LKE CS E21LKEW CU E21LKE CS XE7LKEW CU E7LKE CS XE7LKEW CU E7LKE 3 CS XE9LKEW CU E9LKE CS XE9LKEW CU E9LKE 3 CS XE12LKEW CU E12LKE CS XE12LKEW CU E12LKE 3 CS XE15LKEW CU E15LKE CS XE18LKEW CU E18LKE CS XE21LKEW CU E21LKE Please file and use this manual together with the service manual for Model No CU 2E18CBPG CU 3E23CBPG CU 4E27CBPG Order No RAC0209005C...

Page 2: ...ul Mode Operation 70 12 8 Timer Control 70 12 9 Auto Restart Control 70 12 10 Indication Panel 70 12 11 Patrol Operation 71 12 12 e ion Operation 73 12 13 Mild Dry Cooling Operation 75 12 14 ECO Patrol Operation 76 13 Operation Control For Multi Split Connection 80 13 1 Cooling operation 80 13 2 Soft Dry Operation 80 13 3 Heating Operation 80 13 4 Automatic Operation 80 13 5 Indoor Fan Motor Opera...

Page 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...

Page 4: ...ighten 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 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 me...

Page 5: ...4300 Running Current A 3 0 3 4 Input Power W 160 635 1 02k 165 735 1 30k COP W W 4 38 4 41 3 92 4 85 4 63 3 85 Kcal hW 3 75 3 80 3 37 4 18 3 97 3 31 Power Factor 92 94 Indoor Noise H L QLo dB A 38 25 20 40 27 20 Power Level dB 54 41 36 56 43 36 Outdoor Noise H L dB A 46 47 Power Level dB 61 62 Low Temp Capacity kW I Power W COP 2 90 900 3 22 3 62 1 15k 3 15 Extr Low Temp Capacity kW I Power W COP ...

Page 6: ... 780 30 23 32 870 34 9 32 780 30 23 32 Depth I D O D mm inch 204 8 1 16 289 11 13 32 204 8 1 16 289 11 13 32 Weight Net I D O D kg lb 9 20 33 73 9 20 34 75 Piping Pipe Diameter Liquid Gas mm inch 6 35 1 4 9 52 3 8 6 35 1 4 9 52 3 8 Standard Length m ft 5 16 4 5 16 4 Length Range min max m ft 3 9 8 15 49 2 3 9 8 15 49 2 I D O D Height Different m ft 15 0 49 2 15 0 49 2 Additional Gas Amount g m oz ...

Page 7: ... Input Power and COP measured at 230 V indoor temperature 20 C outdoor 2 1 C 4 Heating extreme low temperature capacity Input Power and COP measured at 230 V indoor temperature 20 C outdoor 7 8 C 5 Specifications are subjected to change without prior notice for further improvement Dry Bulb Wet Bulb Dry Bulb Wet Bulb Indoor Operation Range Cooling Maximum 32 23 32 23 Minimum 16 11 16 11 Heating Max...

Page 8: ...unning Current A 4 4 6 6 Input Power W 175 950 1 71k 185 1 44k 1 94k COP W W 4 57 4 21 3 51 4 32 3 68 3 51 Kcal hW 3 94 3 62 3 02 3 73 3 17 3 02 Power Factor 94 95 Indoor Noise H L QLo dB A 42 33 20 43 35 29 Power Level dB 58 49 36 59 51 45 Outdoor Noise H L dB A 50 51 Power Level dB 65 66 Low Temp Capacity kW I Power W COP 4 47 1 48k 3 02 4 92 1 72k 2 86 Extr Low Temp Capacity kW I Power W COP 3 ...

Page 9: ...30 23 32 870 34 9 32 780 30 23 32 Depth I D O D mm inch 204 8 1 16 289 11 13 32 204 8 1 16 289 11 13 32 Weight Net I D O D kg lb 9 20 34 75 9 20 34 75 Piping Pipe Diameter Liquid Gas mm inch 6 35 1 4 9 52 3 8 6 35 1 4 12 70 1 2 Standard Length m ft 5 16 4 5 16 4 Length Range min max m ft 3 9 8 15 49 2 3 9 8 15 49 2 I D O D Height Different m ft 15 0 49 2 15 0 49 2 Additional Gas Amount g m oz ft 2...

Page 10: ...nput Power and COP measured at 230 V indoor temperature 20 C outdoor 2 1 C 4 Heating extreme low temperature capacity Input Power and COP measured at 230 V indoor temperature 20 C outdoor 7 8 C 5 Specifications are subjected to change without prior notice for further improvement Dry Bulb Wet Bulb Dry Bulb Wet Bulb Indoor Operation Range Cooling Maximum 32 23 32 23 Minimum 16 11 16 11 Heating Maxim...

Page 11: ...unning Current A 3 0 3 4 Input Power W 160 635 1 02k 165 735 1 30k COP W W 4 38 4 41 3 92 4 85 4 63 3 85 Kcal hW 3 75 3 80 3 37 4 18 3 97 3 31 Power Factor 92 94 Indoor Noise H L QLo dB A 38 25 20 40 27 20 Power Level dB 54 41 36 56 43 36 Outdoor Noise H L dB A 46 47 Power Level dB 61 62 Low Temp Capacity kW I Power W COP 2 90 900 3 22 3 62 1 15k 3 15 Extr Low Temp Capacity kW I Power W COP 2 35 9...

Page 12: ...780 30 23 32 870 34 9 32 780 30 23 32 Depth I D O D mm inch 204 8 1 16 289 11 13 32 204 8 1 16 289 11 13 32 Weight Net I D O D kg lb 9 20 33 73 9 20 34 75 Piping Pipe Diameter Liquid Gas mm inch 6 35 1 4 9 52 3 8 6 35 1 4 9 52 3 8 Standard Length m ft 5 16 4 5 16 4 Length Range min max m ft 3 9 8 15 49 2 3 9 8 15 49 2 I D O D Height Different m ft 15 0 49 2 15 0 49 2 Additional Gas Amount g m oz f...

Page 13: ...put Power and COP measured at 230 V indoor temperature 20 C outdoor 2 1 C 4 Heating extreme low temperature capacity Input Power and COP measured at 230 V indoor temperature 20 C outdoor 7 8 C 5 Specifications are subjected to change without prior notice for further improvement Dry Bulb Wet Bulb Dry Bulb Wet Bulb Indoor Operation Range Cooling Maximum 32 23 32 23 Minimum 16 11 16 11 Heating Maximu...

Page 14: ...5760 Running Current A 5 1 Input Power W 175 1 09k 1 93k COP W W 4 57 4 04 3 47 Kcal hW 3 94 3 47 2 98 Power Factor 93 Indoor Noise H L QLo dB A 42 33 20 Power Level dB 58 49 36 Outdoor Noise H L dB A 50 Power Level dB 65 Low Temp Capacity kW I Power W COP 4 85 1 67k 2 90 Extr Low Temp Capacity kW I Power W COP 3 75 1 68k 2 23 Max Current A Max Input Power W 8 9 1 93k Starting Current A 5 1 Compre...

Page 15: ...1 7 16 540 21 9 32 Width I D O D mm inch 870 34 9 32 780 30 23 32 Depth I D O D mm inch 204 8 1 16 289 11 13 32 Weight Net I D O D kg lb 9 20 34 75 Piping Pipe Diameter Liquid Gas mm inch 6 35 1 4 9 52 3 8 Standard Length m ft 5 16 4 Length Range min max m ft 3 9 8 15 49 2 I D O D Height Different m ft 15 0 49 2 Additional Gas Amount g m oz ft 20 0 2 Length for Additional Gas m ft 7 5 24 6 Drain H...

Page 16: ... Bulb 3 Heating low temperature capacity Input Power and COP measured at 230 V indoor temperature 20 C outdoor 2 1 C 4 Heating extreme low temperature capacity Input Power and COP measured at 230 V indoor temperature 20 C outdoor 7 8 C 5 Specifications are subjected to change without prior notice for further improvement Dry Bulb Wet Bulb Indoor Operation Range Cooling Maximum 32 23 Minimum 16 11 H...

Page 17: ...ning Current A 7 0 9 3 Input Power W 245 1 54k 2 60k 245 2 10k 2 75k COP W W 3 67 3 77 3 08 3 67 3 43 3 09 Kcal hW 3 14 3 24 2 65 3 14 2 95 2 66 Power Factor 96 98 Indoor Noise H L QLo dB A 44 37 34 45 37 34 Power Level dB 60 53 50 61 53 50 Outdoor Noise H L dB A 47 49 Power Level dB 61 63 Low Temp Capacity kW I Power W COP 5 80 2 35k 2 47 6 16 2 43k 2 53 Extr Low Temp Capacity kW I Power W COP 4 ...

Page 18: ... 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 32 345 13 19 32 235 9 9 32 345 13 19 32 Weight Net I D O D kg lb 12 26 48 106 12 26 49 108 Piping Pipe Diameter Liquid Gas mm inch 6 35 1 4 12 70 1 2 6 35 1 4 12 70 1 2 Standard Length m ft 5 0 16 4 5 0 16 4 Length Range min max m ft 3 9 8 20 65 5 3 9 8 20 65 5 I D O D Height Different m ft 15 0 49 2 15 0 ...

Page 19: ...at 230 V indoor temperature 20 C outdoor 2 1 C 4 Heating extreme low temperature capacity Input Power and COP measured at 230 V indoor temperature 20 C outdoor 7 8 C 5 Specifications are subjected to change without prior notice for further improvement Protection Device Electronic Control Electronic Control Dry Bulb Wet Bulb Dry Bulb Wet Bulb Indoor Operation Range Cooling Maximum 32 23 32 23 Minim...

Page 20: ...s air conditioning of up to two separate rooms for CU 2E15GBE CU 2E18CBPG A single outdoor unit enables air conditioning of up to three separate rooms for CU 3E18EBE CU 3E23CBPG A single outdoor unit enables air conditioning of up to four separate rooms for CU 4E27CBPG ...

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Page 24: ...24 ...

Page 25: ...25 ...

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Page 27: ...Piping Long piping up to 15 meters 0 75 1 75HP and 20 meters 2 0 2 25HP during single split connection only 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 red...

Page 28: ...28 4 Location of Controls and Components 4 1 Indoor Unit 4 2 Outdoor Unit ...

Page 29: ...29 4 3 Remote Control 4 3 1 CS E7LK CS E9LK CS E12LK CS E15LK CS XE7LK CS XE9LK CS XE12LK CS XE15LK 4 3 2 CS E18LK CS E21LK CS XE18LK CS XE21LK ...

Page 30: ...30 5 Dimensions 5 1 Indoor Unit 5 1 1 CS E7LK CS E9LK CS E12LK CS E15LK CS XE7LK CS XE9LK CS XE12LK CS XE15LK ...

Page 31: ...31 5 1 2 CS E18LK CS E21LK CS XE18LK CS XE21LK ...

Page 32: ...32 5 2 Outdoor Unit 5 2 1 CU E7LKE CU E9LKE CU E12LKE CU E15LKE CU E7LKE 3 CU E9LKE 3 CU E12LKE 3 5 2 2 CU E18LKE CU E21LKE ...

Page 33: ...33 6 Refrigeration Cycle Diagram 6 1 CU E7LKE CU E9LKE CU E12LKE CU E15LKE ...

Page 34: ...34 6 2 CU E7LKE 3 CU E9LKE 3 CU E12LKE 3 ...

Page 35: ...35 6 3 CU E18LKE CU E21LKE ...

Page 36: ...36 7 Block Diagram 7 1 CU E7LKE CU E9LKE CU E15LKE ...

Page 37: ...37 7 2 CU E12LKE ...

Page 38: ...38 7 3 CU E7LKE 3 CU E9LKE 3 CU E12LKE 3 ...

Page 39: ...39 7 4 CU E18LKE CU E21LKE ...

Page 40: ...40 8 Wiring Connection Diagram 8 1 Indoor Unit 8 1 1 CS E7LK CS E9LK CS E12LK CS E15LK CS XE7LK CS XE9LK CS XE12LK CS XE15LK ...

Page 41: ...41 8 1 2 CS E18LK CS E21LK CS XE18LK CS XE21LK ...

Page 42: ...42 8 2 Outdoor Unit 8 2 1 CU E7LKE CU E9LKE CU E15LKE ...

Page 43: ...43 8 2 2 CU E12LKE ...

Page 44: ...44 8 2 3 CU E7LKE 3 CU E9LKE 3 CU E12LKE 3 ...

Page 45: ...45 8 2 4 CU E18LKE CU E21LKE ...

Page 46: ...46 9 Electronic Circuit Diagram 9 1 Indoor Unit 9 1 1 CS E7LK CS E9LK CS E12LK CS E15LK CS XE7LK CS XE9LK CS XE12LK CS XE15LK ...

Page 47: ...47 9 1 2 CS E18LK CS E21LK CS XE18LK CS XE21LK ...

Page 48: ...48 9 2 Outdoor Unit 9 2 1 CU E7LKE CU E9LKE CU E15LKE ...

Page 49: ...49 9 2 2 CU E12LKE ...

Page 50: ...50 9 2 3 CU E7LKE 3 CU E9LKE 3 CU E12LKE 3 ...

Page 51: ...51 9 2 4 CU E18LKE CU E21LKE ...

Page 52: ...52 10 Printed Circuit Board 10 1 Indoor Unit 10 1 1 Main Printed Circuit Board ...

Page 53: ...53 10 1 2 Power Printed Circuit Board 10 1 3 Indicator Printed Circuit Board ...

Page 54: ...54 10 1 4 Receiver Printed Circuit Board 10 1 5 High Voltage Power Supply Printed Circuit Board 10 1 6 Comparator Printed Circuit Board 10 1 7 Eco Patrol Printed Circuit Board ...

Page 55: ...55 10 2 Outdoor Unit 10 2 1 CU E7LKE CU E9LKE CU E12LKE CU E15LKE CU E7LKE 3 CU E9LKE 3 CU E12LKE 3 ...

Page 56: ...56 ...

Page 57: ...57 10 2 2 CU E18LKE CU E21LKE ...

Page 58: ...enser is not obstructed 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...

Page 59: ...th 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 the l...

Page 60: ...60 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 ...

Page 61: ...holder clamper This equipment must be properly earthed Ensure the colour of wires of outdoor unit and the terminal Nos are the same to the indoor s respectively Earth wire shall be Yellow Green Y G in colour and longer than other AC wires for safety reason CUTTING AND FLARING THE PIPING 1 Please cut using pipe cutter and then remove the burrs 2 Remove the burrs by using reamer If burrs is not remo...

Page 62: ... 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 cutter Remove ...

Page 63: ...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 1 5...

Page 64: ...onnecting means should have minimum 3 0 mm contact gap Earth wire shall be Yellow Green Y G in colour and longer than other AC wires for safety reason 11 3 5 Pipe 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...

Page 65: ...e 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 1 5 C Compressor is ON after waiting for 3 m...

Page 66: ... 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 2 Indoor Fan Motor Operation A Basic Rotation Speed rpm i Manual Fan Speed Cooling Dry...

Page 67: ...ected 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 and intake air temperature and manual angles of direction can be adjusted using remote control 12 4 1 Vertical Airflow 1 Automatic vertical airflow direction can be set using remote control the vane...

Page 68: ...l airflow direction can be set using remote control the vane swings left and right within the angles as stated below For heating mode operation the angle of the vane depends on the indoor heat exchanger temperature as Figure 1 below It does not swing during fan motor stop 2 Manual horizontal airflow direction can be set using remote control the angles of the vane are as stated below and the positi...

Page 69: ...2 Manual fan speed for quiet operation is reduced from setting fan speed 12 6 Quiet operation Heating A Purpose To provide quiet heating operation compare to normal operation B Control condition a Quiet operation start condition When Quiet button at remote control is pressed Quiet LED illuminates b Quiet operation stop condition 1 When one of the following conditions is satisfied quiet operation s...

Page 70: ...earlier than the set time as shown below 12 8 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 9 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 mi...

Page 71: ...tops 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...

Page 72: ...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 ...

Page 73: ...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...

Page 74: ...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 ...

Page 75: ...ration 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 main ...

Page 76: ...Abnormal judgment start condition Start from ECO Patrol Sensor power ON and end after 30 seconds b Control content Judge ECO Patrol Sensor power level every 100ms c Abnormal Judgment condition When ECO Patrol Sensor has continues for 25 seconds Hi level 2 Circuit Abnormal Fix Output Lo a Abnormal judgment start condition After ECO Patrol Sensor unit power ON and after pressed 70 seconds b Control ...

Page 77: ...ide comfort and energy saving ECO Patrol Start condition Press ECO Patrol button to select ECO1 and ECO2 ECO Patrol Stop condition Press ECO Patrol button again OFF Timer activates Press OFF ON button to turn off the air conditioner Press AUTO OFF ON button to turn off the air conditioner Press POWERFUL QUIET button Press Mild Dry Cooling button ECO Patrol operation could ON when any of the follow...

Page 78: ...ot be operated at the same time ECO Patrol sensor initialized time is 70 seconds from power supplied to ECO Patrol sensor or 70 seconds from the operation start ECO 1 Cooling Soft Dry Operation ECO 2 Cooling Soft Dry Operation ECO 1 Heating Operation ECO 2 Heating Operation ...

Page 79: ...e conditions are formed Operation stops Timer Cancel button pressed When ECO Patrol sensor check mode signal is not received for more than 30 seconds 3 Control content During ECO Patrol mode ON when check signal is received if 1 or 2 is detected ECO Patrol LED start blinking ECO Patrol sensor operation stops but the unit operates as normal and ECO Patrol sensor abnormal code is memorized the 4 tim...

Page 80: ... to indoor unit after waiting for 3 minutes 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 the indoor fan motor is stopped...

Page 81: ...it connection Indoor unit will resume previous mode include unit standby mode 13 8 Indication Panel Note If POWER LED is blinking 0 5 seconds ON 0 5 second OFF the possible operation of the unit are during Indoor Residual Heat Removal Hot Start during Deice operation operation mode judgment or ON timer sampling If POWER LED is blinking 2 5 seconds ON 0 5 second OFF the unit is in standby mode If T...

Page 82: ...ng current exceeds Y value compressor will be stopped immediately for 3 minutes 4 The first 30 minutes of cooling operation A will be applied 14 1 4 IPM Power transistor Prevention Control A Overheating Prevention Control 1 When the IPM temperature rises to 120 C E7 15LK and 110 C E18 21LK compressor operation will stop immediately 2 Compressor operation restarts after 3 minutes the temperature de...

Page 83: ...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 14 1 7 Low Frequency Protection Control 1 When the compressor operate...

Page 84: ...r fan speed will be higher than during its normal operation 4 If indoor heat exchanger temperature is higher than 5 C for 5 minutes the fan speed will return to its normal operation 14 2 4 Freeze Prevention Control 2 1 Control start conditions During Cooling operation and soft dry operation During thermo OFF condition indoor intake temperature is less than 10 C or Compressor stops for freeze preve...

Page 85: ...peration this control is not applicable Control content Depends on compressor conditions 1 Compressor OFF Compressor ON The indoor unit fan stops temporarily and then starts to blow at minimum airflow for 30 seconds 2 Compressor ON Compressor OFF The indoor unit fan stops for 90 seconds and then blows at minimum airflow for 20 seconds 14 3 Protection Control For Heating Operation 14 3 1 Intake Air...

Page 86: ...quency will be regulated up to 600 seconds 14 3 5 Cold Draught Prevention Control When indoor pipe temperature is low cold draught operation starts where indoor fan speed will be reduced 14 3 6 Deice Operation When outdoor pipe temperature and outdoor air temperature is low deice operation start where indoor fan motor and outdoor fan motor stop and operation LED blinks ...

Page 87: ...ion 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 button at remote control to transmit and store the desired transmissi...

Page 88: ...T button continuously for 10 seconds by using pointer Press TIMER SET button until a beep sound is heard as confirmation of transmission code changed 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 wil...

Page 89: ... 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 ...

Page 90: ...es after an operation is started Cooling Mode Heating Mode Low Pressure High Pressure Electric current during operating Low Pressure High Pressure Electric current during operating Condition of the air conditioner Insufficient refrigerant gas leakage Clogged capillary tube or Strainer Short circuit in the indoor unit Heat radiation deficiency of the outdoor unit Inefficient compression ...

Page 91: ... 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 displayed and signal w...

Page 92: ...ger 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 circuit Outdoor air temperature sensor lead wire and connector H28 Outdoor heat exchanger temperature sensor 1 abnormality Continuous for 5s Outdoor heat exchanger temp...

Page 93: ...re and connector F17 Indoor standby units freezing abnormality 3 times happen within 40 minutes Wrong wiring and connecting pipe expansion valve leakage indoor heat exchanger sensor open circuit Check indoor outdoor connection wire and pipe Indoor heat exchanger sensor lead wire and connector Expansion valve lead wire and connector F90 Power factor correction PFC circuit protection 4 times happen ...

Page 94: ...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...

Page 95: ...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 ...

Page 96: ...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 ...

Page 97: ...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 ...

Page 98: ...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 ...

Page 99: ...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 ...

Page 100: ... 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 ...

Page 101: ...em 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 ...

Page 102: ...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 ...

Page 103: ...nction 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 ...

Page 104: ...tion Decision Conditions During startup and operation of cooling and heating the temperatures detected by the outdoor discharge pipe temperature sen sor are used to determine sensor errors Malfunction Caused Faulty connector connection Faulty sensor Faulty PCB Troubleshooting ...

Page 105: ...unction 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 ...

Page 106: ...Malfunction 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 ...

Page 107: ...nction 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 ...

Page 108: ... 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 ...

Page 109: ...nction 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 ...

Page 110: ...ality 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 ...

Page 111: ...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 ...

Page 112: ...ature detected by the indoor pipe temperature sensor is above 60e 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 ...

Page 113: ...l takes place when indoor pipe temperature is lower than 2e 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...

Page 114: ...Conditions 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 ...

Page 115: ...erature 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 ...

Page 116: ...operation 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 ...

Page 117: ...cking 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 ...

Page 118: ...tion 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 ...

Page 119: ...re data 61e C is detected by the outdoor pipe temperature sensor Malfunction Caused Air short circuit at outdoor unit Dust accumulation on the outdoor 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 ...

Page 120: ...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...

Page 121: ...ling and heating when compressor tank temperature data 112e 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 ...

Page 122: ...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 ...

Page 123: ...ng 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 transistor UVW Tester...

Page 124: ...nd Indoor Fan Motor Removal Procedures 17 1 1 1 To remove front grille 17 1 1 2 To remove power electronic controller High voltages 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 ...

Page 125: ...125 17 1 1 3 To remove power electronic controller 17 1 1 4 To remove discharge grille ...

Page 126: ...126 17 1 1 5 To remove control board 17 1 1 6 To remove cross flow fan and indoor fan motor ...

Page 127: ...127 ...

Page 128: ...128 17 2 CS E18LK CS E21LK 17 2 1 Indoor Electronic Controllers Cross Flow Fan and Indoor Fan Motor Removal Procedures 17 2 1 1 To remove front grille 17 2 1 2 To remove horizontal vane ...

Page 129: ...129 17 2 1 3 To remove power electronic controller ...

Page 130: ...130 17 2 1 4 To remove discharge grille 17 2 1 5 To remove control board ...

Page 131: ...131 17 2 1 6 To remove cross flow fan and indoor fan motor ...

Page 132: ...132 ...

Page 133: ...Caution When handling electronic controller be careful of electrostatic discharge 1 Remove the 3 screws of the Top Panel Fig 1 2 Remove the 6 screws of the Front Panel Fig 2 3 Remove the screw of the Terminal Board Cover 4 Remove the Top Cover of the Control Board by 4 hooks Fig 3 5 Remove the Control Board as follows Fig 4 Fig 5 Fig 6 ...

Page 134: ...2 Remove the 10 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 8 screws of the Electronic Controller Fig 5 Caution When handling electronic controller be careful of electrostatic discharge ...

Page 135: ...135 18 Technical Data 18 1 Operation Characteristics 18 1 1 CU E7LKE ...

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Page 139: ...139 18 1 2 CU E9LKE ...

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Page 143: ...143 18 1 3 CU E12LKE ...

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Page 147: ...147 18 1 4 CU E15LKE ...

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Page 151: ...151 18 1 5 CU E7LKE 3 ...

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Page 155: ...155 18 1 6 CU E9LKE 3 ...

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Page 159: ...159 18 1 7 CU E12LKE 3 ...

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Page 163: ...163 18 1 8 CU E18LKE Cooling Characteristic at Different Outdoor Air Temperature ...

Page 164: ...164 Cooling Characteristic at Different Piping Length ...

Page 165: ...165 Heating Characteristic at Different Outdoor Air Temperature ...

Page 166: ...166 Heating Characteristic at Different Piping Length ...

Page 167: ...167 18 1 9 CU E21LKE Cooling Characteristic at Different Outdoor Air Temperature ...

Page 168: ...168 Cooling Characteristic at Different Piping Length ...

Page 169: ...169 Heating Characteristic at Different Outdoor Air Temperature ...

Page 170: ...170 Heating Characteristic at Different Piping Length ...

Page 171: ...64 230V 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 3 47 2 63 0 79 3 24 2 52 0 85 3 02 2 43 0 91 2 74 2 30 0 98 19 0 C 3 50 0 86 19 5 C 3 81 2 76 0 80 3 56 2 65 0 86 3 31 2 55 0 92 3 01 2 43 1 00 22 0 C 4 15 2 86 0 82 3 88 2 75 0 88 3 61 2 65 0 94 3 28 2 53 1 01 230V Outdoor Temp C Indoor wet bulb temp 30 35 40 46 TC SHC IP TC SHC IP TC SHC IP TC ...

Page 172: ... 94 4 08 1 40 5 55 3 93 1 50 5 16 3 79 1 61 4 69 3 61 1 73 230V 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 6 25 4 74 2 02 5 84 4 54 2 18 5 43 4 37 2 33 4 94 4 15 2 51 19 0 C 6 30 2 21 19 5 C 6 86 4 96 2 06 6 41 4 77 2 22 5 97 4 59 2 37 5 42 4 37 2 56 22 0 C 7 48 5 14 2 10 6 99 4 95 2 26 6 50 4 77 2 42 5 91 4 55 2 61 TC SHC IP Total Cooling Capaci...

Page 173: ... Indoor Unit 19 1 1 CS E7LKEW CS E9LKEW CS E12LKEW CS E15LKEW CS XE7LKEW CS XE9LKEW CS XE12LKEW CS XE15LKEW 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 ...

Page 174: ...ONIC CONTROLLER INDICATOR 1 CWA745634 O 26 INDICATOR HOLDER 1 CWD933021 27 SENSOR COMPLETE 1 CWA50C2401 O 28 CONTROL BOARD FRONT COVER 1 CWH13C1183 29 CONTROL BOARD TOP COVER 1 CWH131350 31 REMOTE CONTROL COMPLETE 1 CWA75C3566 O 32 FRONT GRILLE COMPLETE 1 CWE11C4574 O 33 INTAKE GRILLE COMPLETE 1 CWE22C1507 34 GRILLE DOOR COMPLETE 1 CWE14C1029 35 E ION FILTER 2 CWD00K1014 36 SCREW FRONT GRILLE 2 XT...

Page 175: ...1 CWA745791 58 COVER FOR PCB ECO UPPER 1 CWD933192 59 COVER FOR PCB ECO BOTTOM 1 CWD933193 60 LEAD WIRE PCB ECO 1 CWA67C8483 61 SENSOR COMPLETE ECO 1 CWA50C2708 62 COVER FOR RECEIVER UPPER 1 CWD933022 63 COVER FOR RECEIVER BOTTOM 1 CWD933209 64 OPERATION INSTRUCTIONS 1 CWF567265 REF NO PART NAME DESCRIPTION QTY CS E7LKEW CS E9LKEW CS E12LKEW CS E15LKEW REMARKS ...

Page 176: ...TRONIC CONTROLLER INDICATOR 1 CWA745634 O 26 INDICATOR HOLDER 1 CWD933021 27 SENSOR COMPLETE 1 CWA50C2401 O 28 CONTROL BOARD FRONT COVER 1 CWH13C1183 29 CONTROL BOARD TOP COVER 1 CWH131350 31 REMOTE CONTROL COMPLETE 1 CWA75C3566 O 32 FRONT GRILLE COMPLETE 1 CWE11C4573 O 33 INTAKE GRILLE COMPLETE 1 CWE22C1482 34 GRILLE DOOR COMPLETE 1 CWE14C1038 35 E ION FILTER 2 CWD00K1014 36 SCREW FRONT GRILLE 2 ...

Page 177: ...CWA745791 58 COVER FOR PCB ECO UPPER 1 CWD933192 59 COVER FOR PCB ECO BOTTOM 1 CWD933193 60 LEAD WIRE PCB ECO 1 CWA67C8483 61 SENSOR COMPLETE ECO 1 CWA50C2708 62 COVER FOR RECEIVER UPPER 1 CWD933022 63 COVER FOR RECEIVER BOTTOM 1 CWD933209 64 OPERATION INSTRUCTIONS 1 CWF567265 REF NO PART NAME DESCRIPTION QTY CS XE7LKEW CS XE9LKEW CS XE12LKEW CS XE15LKEW REMARKS ...

Page 178: ...78 19 1 2 CS E18LKEW CS E21LKEW CS XE18LKEW CS XE21LKEW 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 ...

Page 179: ...TE 1 CWE20C3007 CWE20C2922 24 FULCRUM 2 CWH621103 25 VERTICAL VANE 15 CWE241289 26 CONNECTING BAR 1 CWE261156 27 CONNECTING BAR 1 CWE261158 28 CONNECTING BAR 1 CWE261157 29 CONNECTING BAR 1 CWE261159 30 CONNECTING BAR 1 CWE261160 31 AIR SWING MOTOR 1 CWA98K1014 O 32 AIR SWING MOTOR 1 CWA981241 O 34 CAP DRAIN TRAY 1 CWH521096 35 HORIZONTAL VANE 1 CWE24C1295 CWE24C1296 36 BACK COVER CHASSIS 1 CWD933...

Page 180: ...A745791 O 58 COVER FOR PCB ECO UPPER 1 CWD933192 O 59 COVER FOR PCB ECO BOTTOM 1 CWD933193 O 60 LEAD WIRE PCB ECO 1 CWA67C8484 O 61 SENSOR COMPLETE ECO 1 CWA50C2709 O 62 COVER FOR RECEIVER UPPER 1 CWD933022 O 63 COVER FOR RECEIVER BOTTOM 1 CWD933209 O 64 OPERATING INSTRUCTION 1 CWF567265 65 INSTALLATION INSTRUCTION 1 CWF614211 REF NO PART NAME DESCRIPTION QTY CS E18LKEW CS E21LKEW CS XE18LKEW CS X...

Page 181: ...9 2 1 CU E7LKE CU E9LKE CU E12LKE CU E15LKE CU E7LKE 3 CU E9LKE 3 CU E12LKE 3 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 ...

Page 182: ...1 ĕ ĕ ĕ 16 2 WAYS VALVE LIQUID 1 CWB021400 CWB021301 CWB021400 CWB021301 O 17 3 WAYS VALVE GAS 1 CWB011374 ĕ ĕ CWB011367 O 2 0 0 0 0 J 3 9 1 C 0 G 1 R O T C A E R 9 1 ĕ G0C193J00004 ĕ O A 9 3 0 1 7 1 H W C 1 R E V O C L A N I M R E T 0 2 ĕ ĕ ĕ 21 NUT TERMINAL COVER 1 CWH7080300J ĕ ĕ ĕ 22 SOUND PROOF BOARD 1 CWH151172 ĕ ĕ ĕ 23A SOUND PROOF MATERIAL 1 CWG302443 CWG302292 ĕ ĕ 23B SOUND PROOF MATERIAL...

Page 183: ... CWB021400 CWB021301 O 17 3 WAYS VALVE GAS 1 CWB011374 O 19 REACTOR 1 G0C193J00002 G0C193J00004 O 20 TERMINAL COVER 1 CWH171039A 21 NUT TERMINAL COVER 1 CWH7080300J 22 SOUND PROOF BOARD 1 CWH151172 23A SOUND PROOF MATERIAL 1 CWG302316 23B SOUND PROOF MATERIAL 1 CWG302317 23C SOUND PROOF MATERIAL 1 CWG302315 24 SENSOR COMPLETE 1 CWA50C2205 O 25 CONTROL BOARD COVER 1 CWH131264 26 ELECTRONIC CONTROLL...

Page 184: ...184 19 2 2 CU E18LKE CU E21LKE 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 ...

Page 185: ... N I M R E T T U N 4 2 25 SENSOR COMPLETE COMP TOP 1 CWA50C2185 4 7 0 2 3 H W C 1 R O S N E S R E D L O H 6 2 27 V COIL COMPLETE 4 WAYS VALVE 1 CWA43C2168J 28 V COIL COMPLETE EXPAND VALVE 1 CWA43C2058J 29 SENSOR COMPLETE COMP DISC 1 CWA50C2180 1 8 1 2 C 0 5 A W C 1 E T E L P M O C R O S N E S 0 3 3 0 0 0 0 J 3 0 2 C 0 G 1 R O T C A E R 1 3 J 0 1 1 1 K 8 2 A W C 1 Y S S A D R A O B L A N I M R E T ...

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