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Panasonic CS-NE12GKE Service Manual Download Page 39

39

12.2.2.

Protection Control For Cooling & Soft Dry Operation

12.2.2.1. Outdoor Air Temperature Control

• The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below.
• This control will begin 1 minute after the compressor starts.

12.2.2.2. Cooling Overload Control

• Detects the Outdoor pipe temperature and carry out below restriction/limitation (Limit the compressor Operation frequency)
• The compressor stop if outdoor pipe temperature exceeds 63

°

C

• If the compressor stops 4 times in 20 minutes, Timer LED blinking (F95: outdoor high pressure rise protection)

12.2.2.3. Freeze Prevention Control

1. When indoor heat exchanger temperature is lower than 0

°

C continuously for 6 minutes, compressor will stop operating.

2. Compressor will resume its operation 3 minutes after the indoor heat exchanger is higher than 13

°

C.

3. At the same time, indoor fan speed will be higher than during its normal operation.
4. If indoor heat exchanger temperature is higher than 13

°

C for 5 minutes, the fan speed will return to its normal operation.

Summary of Contents for CS-NE12GKE

Page 1: ...ion of Controls and Components 11 4 1 Product Overview 11 5 Dimensions 12 5 1 Indoor Unit 12 5 2 Outdoor Unit 13 6 Refrigeration Cycle Diagram 14 7 Block Diagram 15 8 Wiring Connection Diagram 16 8 1 Indoor Unit 16 8 2 Outdoor Unit 17 9 Electronic Circuit Diagram 18 9 1 Indoor Unit 18 9 2 Outdoor Unit 19 10 Printed Circuit Board 20 10 1 Indoor Unit 20 10 2 Outdoor Unit 22 11 Installation Instructi...

Page 2: ...r servicing done by the user is defective it will cause water leakage electrical shock or fire 2 Install according to this installation instruction strictly If installation is defective it will cause water leakage electrical shock or fire 3 Use the attached accessories parts and specified parts for installation and servicing Otherwise it will cause the set to fall water leakage fire or electrical ...

Page 3: ... Select an installation location which is rigid and strong enough to support or hold the unit and select a location for easy maintenance 2 Power supply connection to the conditioner Connect the power supply cord of the air conditioner to the mains using one of the following methods Power supply point shall be the place where there is ease for access for the power disconnection in case of emergency...

Page 4: ...g 10 3 365 Heating 10 8 380 Refrigeration Control Device Exp Valve Refrigeration Oil cm3 RB68A or Freol Alpha68M 400 Refrigerant R410A g oz 820 28 9 Dimension Height mm inch 280 11 1 32 540 21 1 4 Width mm inch 799 31 15 32 780 30 23 32 Depth mm inch 183 7 7 32 289 11 3 8 Net Weight kg lbs 9 20 34 75 Pipe Diameter Gas mm inch 9 52 3 8 Liquid mm inch 6 35 1 4 Standard Length m ft 7 5 24 6 Pipe Leng...

Page 5: ...inium Pre Coat Aluminium Fin Type Slit Fin Corrugated Fin Row x Stage x FPI 2 x 15 x 21 2 x 24 x 17 Size W x H x L mm 610 x 315 x 25 4 36 4 x 504 x 713 684 Air Filter Material P P Honey Comb Type One Touch Item Unit Power Source Phase Voltage Cycle ø Single V 230 Hz 50 Input Power W Cooling 460 120 560 Heating 620 115 920 Starting Current A 3 0 Running Current A Cooling 2 2 Heating 3 0 Power Facto...

Page 6: ...0 Heating 11 5 410 Refrigeration Control Device Exp Valve Refrigeration Oil cm3 RB68A or Freol Alpha68M 400 Refrigerant R410A g oz 930 32 8 Dimension Height mm inch 280 11 1 32 540 21 1 4 Width mm inch 799 31 15 32 780 30 23 32 Depth mm inch 183 7 7 32 289 11 3 8 Net Weight kg lbs 9 20 35 77 Pipe Diameter Gas mm inch 9 52 3 8 Liquid mm inch 6 35 1 4 Standard Length m ft 7 5 24 6 Pipe Length Range ...

Page 7: ...it Fin Corrugated Fin Row x Stage x FPI 2 x 15 x 21 2 x 24 x 17 Size W x H x L mm 610 x 315 x 25 4 36 4 x 504 x 713 684 Air Filter Material P P Honey Comb Type One Touch Item Unit Power Source Phase Voltage Cycle ø Single V 230 Hz 50 Input Power W Cooling 590 120 750 Heating 825 115 1360 Starting Current A 3 9 Running Current A Cooling 2 8 Heating 3 9 Power Factor Cooling 92 Heating 92 Power facto...

Page 8: ...10 Heating 12 2 430 Refrigeration Control Device Exp Valve Refrigeration Oil cm3 RB68A or Freol Alpha68M 400 Refrigerant R410A g oz 970 34 2 Dimension Height mm inch 280 11 1 32 540 21 1 4 Width mm inch 799 31 15 32 780 30 23 32 Depth mm inch 183 7 7 32 289 11 3 8 Net Weight kg lbs 9 20 35 77 Pipe Diameter Gas mm inch 12 7 1 2 Liquid mm inch 6 35 1 4 Standard Length m ft 7 5 24 6 Pipe Length Range...

Page 9: ...t Fin Corrugated Fin Row x Stage x FPI 2 x 15 x 21 2 x 24 x 17 Size W x H x L mm 610 x 315 x 25 4 36 4 x 504 x 713 684 Air Filter Material P P Honey Comb Type One Touch Item Unit Power Source Phase Voltage Cycle ø Single V 230 Hz 50 Input Power W Cooling 920 120 1180 Heating 1250 115 1850 Starting Current A 5 8 Running Current A Cooling 4 3 Heating 5 8 Power Factor Cooling 93 Heating 94 Power fact...

Page 10: ...y on the indoor unit intake temperature Operation Condition Use this air conditioner under the following temperature range DBT Dry bulb temperature WBT Wet bulb temperature This unit is still able to operate as a cooler with outdoor temperature as low as 15 C in a non living room such as a computer room with a room temperature of 16 C or above and room humidity up to 80 During cooling operation wh...

Page 11: ...11 4 Location of Controls and Components 4 1 Product Overview 4 1 1 Indoor Unit 4 1 2 Outdoor Unit 4 1 3 Remote Control ...

Page 12: ...12 5 Dimensions 5 1 Indoor Unit ...

Page 13: ...13 5 2 Outdoor Unit ...

Page 14: ...additional refrigerant should be added as shown in the table Model Piping size Rated Length m Common Length m Min Piping m Max Elevation m Max Piping Length Length m Additional Refrigerant g m Gas Liquid NE7GK NE9GK 3 8 1 4 7 5 7 5 5 3 15 20 NE12GK 1 2 1 4 7 5 7 5 5 3 15 20 ...

Page 15: ...15 7 Block Diagram ...

Page 16: ...16 8 Wiring Connection Diagram 8 1 Indoor Unit ...

Page 17: ...17 8 2 Outdoor Unit ...

Page 18: ...18 9 Electronic Circuit Diagram 9 1 Indoor Unit ...

Page 19: ...19 9 2 Outdoor Unit ...

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

Page 21: ...21 10 1 2 Power Printed Circuit Board 10 1 3 Indicator Panel ...

Page 22: ...22 10 2 Outdoor Unit 10 2 1 Main Printed Circuit Board ...

Page 23: ...ect sunlight or rain be careful that heat radiation from the condenser 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 rated length additional refrigerant ...

Page 24: ... method is by putting measuring tape at position as shown in the diagram above The hole centre is obtained by measuring the distance namely 150 mm and 125 mm for left and right hole respectively Drill the piping hole at either the right or the left and the hole should be slightly slanted to the outdoor side 11 3 2 TO DRILL A HOLE IN THE WALL AND INSTALL A SLEEVE OF PIPING 1 Insert the piping sleev...

Page 25: ...25 3 For the embedded piping This can be used for left rear piping and left bottom piping also ...

Page 26: ...oroprene sheathed 5 1 5 mm2 flexible cord type designation 245 IEC 57 or heavier cord Ensure the colour of wires of outdoor unit and the termi nal Nos are the same to the indoor s respectively Earth lead wire shall be longer than the other lead wires as shown in the figure for the electrical safety in case of the slipping out of the cord from the anchorage Secure the cable onto the control board w...

Page 27: ...ther tighten the flare nut with torque wrench in specified torque as stated in the table Connecting The Piping To Outdoor Unit Decide piping length and then cut by using pipe cutter Remove burrs from cut edge Make flare after inserting the flare nut locate at valve onto the copper pipe Align center of piping to valves and then tighten with torque wrench to the specified torque as stated in the tab...

Page 28: ...rvice port caps of the 3 way valve at a torque of 18 Nl m with a torque wrench 7 Remove the valve caps of both of the 2 way valve and 3 way valve Position both of the valves 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 4 4 CONNECT THE CABLE TO THE OUTDOOR UNIT FOR DETAIL REFER TO WIRING DIAGRAM AT UNIT 1 Remov...

Page 29: ...n hose or connecting piping is in the room where dew may form please increase the insulation by using POLY E FOAM with thickness 6 mm or above 11 4 6 NEW AUTO MODE SELECTION This control depends only on the Indoor intake temperature during its mode selection judgement Outdoor intake temperature does not affect the judgement The New Auto Mode Control can be selected by cutting the jumper JX1 in the...

Page 30: ...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 31: ...ion mode changed from Cool Soft Dry to Heating or vice versa 12 1 6 New Automatic Operation This New Auto mode control can be selected by cutting jumper JX1 located on the indoor main printed circuit board as shown in the diagram below This New Auto mode can be set using remote control and the operation is decided by remote control setting temperature remote control operation mode and indoor intak...

Page 32: ...ng to pattern below Heating According to indoor pipe temperature automatic heating fan speed is determined as follows B Feedback control Immediately after the fan motor started feedback control is performed once every second During fan motor on if fan motor feedback 2550 rpm or 50 rpm continue for 10 seconds then fan motor error counter increase fan motor is then stop and restart If the fan motor ...

Page 33: ...nd down within the angles as stated above For heating mode operation the angle of the vane depends on the indoor heat exchanger temperature as Figure 1 below When the air conditioner is stopped using remote control the vane will shift to close position 2 Manual vertical airflow direction can be set using remote control the angles of the vane are as stated above and the positions of the vane are as...

Page 34: ...ce sound of Hi Me Lo for 3dB Some models more than 3dB 2 Fan speed for quiet operation is 1 step from setting fan speed 12 1 11 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 f...

Page 35: ...rate earlier than the set time as shown below 12 1 14 OFF Timer Control OFF timer can be set using remote control the unit with timer set will stop operate at set time 12 1 15 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 ...

Page 36: ...mperature are a 8 C Pressing TEMP down button at the remote control b 10 C Pressing TEMP up button at the remote control 4 During the operation of this mode a The indoor fan speed will remain at Hi fan tap all the time included deice process b Powerful operation Quiet operation and Fan Speed selection are disabled c Omission of cold draft prevention control 5 Control condition Caution If the indoo...

Page 37: ...or 3 minutes 4 The first 30 minutes of cooling operation A will be applied 12 2 1 4 IPM Power transistor Prevention Control A Overheating Prevention Control 1 When the IPM temperature rises to 100 C compressor operation will stop immediately 2 Compressor operation restarts after 3 minutes the temperature decreases to 95 C B DC Peak Current Control 1 When electric current to IPM exceeds set value o...

Page 38: ...erature 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 12 2 1 7 Low Frequency Protection Control 1 When the compressor operate at frequency low...

Page 39: ...quency The compressor stop if outdoor pipe temperature exceeds 63 C If the compressor stops 4 times in 20 minutes Timer LED blinking F95 outdoor high pressure rise protection 12 2 2 3 Freeze Prevention Control 1 When indoor heat exchanger temperature is lower than 0 C continuously for 6 minutes compressor will stop operating 2 Compressor will resume its operation 3 minutes after the indoor heat ex...

Page 40: ...re is 30 C or above 12 2 3 2 Outdoor Air Temperature Control The Max current value is regulated when the outdoor air temperature rise above 14 C in order to avoid compressor overloading 12 2 3 3 Overload Protection Control The compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown in below If the heat exchanger temperature exceeds 60 C compressor wi...

Page 41: ...ounds are heard the various setting mode is at standby condition Press and hold AUTO OFF ON Button until 4 Beep sounds are heard the individual correspondence mode is at standby condition During standby condition when the indoor unit receives AC RESET signal Beep sound is heard from remote control the corresponding mode will be activated 3 REMOTE CONTROL NUMBER SWITCH MODE The Remote Control Numbe...

Page 42: ...talled nearby together To change remote control transmission code short or open jumpers at the remote control printed circuit board 13 3 Remote Control Button 13 3 1 SET BUTTON To check current remote control transmission code Press for more than 10 seconds 13 3 2 CLOCK BUTTON To change the remote control s time format Press for more than 5 seconds 13 3 3 RESET RC To clear and restore the remote c...

Page 43: ... 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 44: ...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 45: ...status 1 Turn power on 2 Press the CHECK button on the remote controller contiguously 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 will be transmitted to the main unit The power ...

Page 46: ...2 defective or disconnected H27 Outdoor air temperature sensor abnormality Continue for 5 sec O Outdoor temperature sensor defective or disconnected H28 Outdoor heat exchanger temperature sensor abnormality Continue for 5 sec O Outdoor heat exchanger temperature sensor defective or disconnected H30 Outdoor discharge air temperature sensor abnormality Continue for 5 sec Outdoor temperature sensor d...

Page 47: ...e Hold both sides of the Front Grille and remove it by pulling up and towards you gently Fig 1 Fig 1 15 1 2 To remove the Main Electronic Controller Unhook the tabs at the Control Board to remove the Control Board Cover Fig 2 Release the Indicator by detaching the CN DISP then remove the Indicator from the 2 tabs Fig 3 Fig 2 Fig 3 High voltages are generated in the electrical parts area by the cap...

Page 48: ...tronic Controller Release the 2 screws for the Earth wire Fig 6 Pull out 4 terminal wires Black Blue Red and Yellow from the Terminal Board Fig 6 Detach the Terminal Board from the Control Board Fig 6 Press the Hold to the left side remove the Particular Piece and slide out the Power Electronic Controller Fig 6 Release the AC 301 BRW connector Fig 7 Release the AC 303 WHT connector Fig 7 Release t...

Page 49: ... Board you will be able to remove the Control Board Fig 9 Fig 9 15 1 6 To remove the Cross Flow Fan and Indoor Fan Motor Remove the screw at the Cross Flow Fan Fig 10 Reminder To reinstall the Fan Motor please adjust the connector location to 45 with Fan Motor before fixing Control Board Fig 10 Remove the Bearing Fig 11 Remove the screw at the left of the Evaporator Fig 11 Press the Hold to the le...

Page 50: ...50 Lift up the Evaporator and remove the Cross Flow Fan from the unit by pulling it to the left and downward Fan Motor can be removed after the removal of the Cross Flow Fan Fig 12 Fig 12 ...

Page 51: ...ler 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 52: ...52 16 Technical Data 16 1 Operation Characteristics 16 1 1 CS NE7GKE CU NE7GKE A Cool Outdoor Temperature Change Indoor Temp 27 19 C Remote Con HI FAN COOL 16 C Comp Hz Rated Cooling Voltage 230 V ...

Page 53: ...53 ...

Page 54: ...54 B Cool Piping Length Change Indoor Temp 27 19 C 35 C Remote Con HI FAN COOL 16 C Comp Hz Rated Cooling Voltage 230 V ...

Page 55: ...55 ...

Page 56: ...56 C Heat Outdoor Temperature Change Indoor Temp 20 C Remote Con HI FAN HEAT 30 C Comp Hz Rated Heating Voltage 230 V ...

Page 57: ...57 ...

Page 58: ...58 D Heat Piping Length Change Indoor Temp 20 C 7 6 C Remote Con HI FAN HEAT 30 C Comp Hz Rated Heating Voltage 230 V ...

Page 59: ...59 ...

Page 60: ...60 16 1 2 CS NE9GKE CU NE9GKE A Cool Outdoor Temperature Change Indoor Temp 27 19 C Remote Con HI FAN COOL 16 C Comp Hz Rated Cooling Voltage 230 V ...

Page 61: ...61 ...

Page 62: ...62 B Cool Piping Length Change Indoor Temp 27 19 C 35 C Remote Con HI FAN COOL 16 C Comp Hz Rated Cooling Voltage 230 V ...

Page 63: ...63 ...

Page 64: ...64 C Heat Outdoor Temperature Change Indoor Temp 20 C Remote Con HI FAN HEAT 30 C Comp Hz Rated Heating Voltage 230 V ...

Page 65: ...65 ...

Page 66: ...66 D Heat Piping Length Change Indoor Temp 20 C 7 6 C Remote Con HI FAN HEAT 30 C Comp Hz Rated Heating Voltage 230 V ...

Page 67: ...67 ...

Page 68: ...68 16 1 3 CS NE12GKE CU NE12GKE A Cool Outdoor Temperature Change Indoor Temp 27 19 C Remote Con HI FAN COOL 16 C Comp Hz Rated Cooling Voltage 230 V ...

Page 69: ...69 ...

Page 70: ...70 B Cool Piping Length Change Indoor Temp 27 19 C 35 C Remote Con HI FAN COOL 16 C Comp Hz Rated Cooling Voltage 230 V ...

Page 71: ...71 ...

Page 72: ...72 C Heat Outdoor Temperature Change Indoor Temp 20 C Remote Con HI FAN HEAT 30 C Comp Hz Rated Heating Voltage 230 V ...

Page 73: ...73 ...

Page 74: ...74 D Heat Piping Length Change Indoor Temp 20 C 7 6 C Remote Con HI FAN HEAT 30 C Comp Hz Rated Heating Voltage 230 V ...

Page 75: ...75 ...

Page 76: ... SHC IP 17 0 C 2 58 1 96 0 54 2 41 1 88 0 58 2 24 1 80 0 62 2 04 1 71 0 67 19 0 C 2 60 0 59 19 5 C 2 83 2 05 0 55 2 65 1 97 0 59 2 46 1 89 0 63 2 24 1 80 0 68 22 0 C 3 09 2 12 0 56 2 88 2 04 0 60 2 68 1 97 0 64 2 44 1 88 0 70 CS NE12GKE CU NE12GKE 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 84 3 24 2 52 0 91 3 02 2 43 0 97 2 74 2 ...

Page 77: ...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 ...

Page 78: ...RIZONTAL VANE COMPLETE 1 CWE24C1183 19 BACK COVER CHASSIS 1 CWD932454 20 CONTROL BOARD CASING 1 CWH102321 21 TERMINAL BOARD COMPLETE 1 CWA28C2306 O 23 ELECTRONIC CONTROLLER MAIN 1 CWA73C2792 CWA73C2793 CWA73C2794 O 24 ELECTRONIC CONTROLLER POWER 1 CWA744909 O 25 SENSOR COMPLETE 1 CWA50C2404 O 26 CONTROL BOARD FRONT COVER 1 CWH131207 27 INDICATOR COMPLETE 1 CWE39C1180 O 28 INDICATOR HOLDER 1 CWD932...

Page 79: ...79 17 2 Outdoor 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 ...

Page 80: ...EXP VALVE 1 CWA43C2058J 24 SENSOR COMPLETE 1 CWA50C2402 25 SENSOR COMPLETE 1 CWA50C2281 26 CONTROL BOARD CASING 1 CWH102294 27 TERMINAL BOARD ASSY 1 CWA28K1021J 28 CLIP FOR SENSOR 2 CWH32143 29 PEAKING COILS 1 GOC193J00003 GOC193J00004 30 CONTROL BOARD CASING 1 CWH102293 31 ELECTRONIC CONTROLLER MAIN 1 CWA73C2821R CWA73C2822R CWA73C2823R 32 OVER HEAT PROTECTOR COMPLETE 1 CWA14C1012 33 CONTROL BOAR...

Page 81: ...e 061 O marked parts are recommended to be kept in stock PHAAM Printed in Malaysia SSYW0705 00 REF NO PART NAME DESCRIPTION QTY CU NE7GKE CU NE9GKE CU NE12GKE REMARKS 51 STRAINER 1 CWB111004 52 FLARE NUT 1 4 1 CWT251030 53 FLARE NUT 3 8 1 2 1 CWT251031 CWT251032 ...

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