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SERVICE MANUAL

1. 18K 341 892 Ecco TOA T gt O E J ji C Bite CC BUIN 5 L ICH 396 L 965 R 24K a 5 a A ff SN Gert N A TE gt 2 IREE NS Gi NUSS C DL JI LAA y 427 sl mama C C gt Unitmm E 610 J Technical Information o 15 Service Manual 4 Refrigerant System Diagram Indoor unit Outdoor unit Gas pipe side Valve Heat exchanger evaporator Hest exchanger j Pe pipe Hd condenser gt vJ 000 J A Valve i Strainer Capillary Strainer 2 COOLING t HEATING O Technical Information Service Manual 5 Electrical Part 5 1 Wiring Diagram elnstruction Symbol Symbol Color Symbol Symbol Color Symbol mo ke w be CN Eegen Note Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this
2. Cooling compressor will stop indoor fan motor works Heating all will stop Replace the outdoor control board AP1 Replace the outdoor control board AP1 Pls refer to Part 3 capacitor charging fault of troubleshooting Replace the outdoor control board AP1 To check whether the ambient Temp of IPM is too high or the heat sinhing of IPM is dirty else replace the outdoor baord AP1 Power voltage is not stable 1 Check the Input voltage if the Voltage is lower than 150VAC restart the machine when the power supply is mormal 2 Checking the reactor L connection Whole unit break for 20 mins and discharge to check the outdoor control board AP1 s IPM module coolant whether is short the radiator is tightened If above phenomenon is not OK Please improve or replace the control board AP1 1 Power supply voltage is lower than AC175V 2 Wire terminal 4V loosen or wire break 3 4V damaged replace 4V Replace the outdoor control board AP1 52 Installation and Maintenance Service Manual Anti freezing All loads work normally but indoor ale eene boor 38 IImit decrease the running frequency limited P or fan speed is to low frequency or decrease 1 The wire terminal of 39 outdoor fan motor is loosed fix the terminal 2 Motor damaged replace the motor 3 Fan motor module on mainboard is damaged replace the mainboard AP1 Cooling outdoor fan motor compressor stop Fan module running indoor fan w
3. Malfunction D5 D6 D16 D30 Overload O Xx Ww Air exhaust a a Ww Main check points els the electronic expansion valve connected well Is the electronic expansion valve damaged els refrigerant leaked els the overload protector damaged els the air exhaust temperature sensor damaged Fault diagnosis process 20 minutes after the unit is powered off Ks the overload protector S N connected well _ Y Check if the resistance of overload protector is less than 10000h in ambient temp D ere H ER __ Isthe terminal FA of ____ N the electronic expansion valve connected _ correctly _ Connect the wires correctly according to wiring diagram Y y heck if the coil of electronic expansio valve is installed correctly on the valve Y Check if the electronic expansion Replace the overload protector SAT valve is blocked y A A Tf the fault is eliminated Y Ki Se Ae N y Check if the refrigerant is leaked if yes recharge refrigerant D lt If the fault is eliminated Y eo N heck if the air exhaus temperature sensor is normal according to he Resistance Tabl N Replace the air exhaust temp sensor Replace the outdoor control panel y Cm Oo 9 Installation and Maintenance Service Manual 7 Communication malfunction Malfunct
4. Heating Rated cooling Pressure of gas pipe Inlet and outlet pipe condition C connecting indoor and temperature of heat DB WB outdoor unit ESCH ema tice 1200 Compressor Fan speed of Fan speed of i ia indoor unit outdoor unit 20 Instruction T1 Inlet and outlet pipe temperature of evaporator T2 Inlet and outlet pipe temperature of condenser P Pressure at the side of big valve Connection pipe length 5 m Oo o Technical Information Service Manual 2 5 Noise Criteria Curve Tables for Both Models Indoor side noise when blowing Outdoor side noise 60 50 HA 50 SS DI 40 D 3 p 30 D 9 3 2 20 a 10 zi 0 o 20 40 60 80 100 low Middle High Super High Indoor Fan Motor Rotating Speed Compressor frequency Hz 18K 24K 18K 24K Technical Information cl 13 3 Outline Dimension Diagram 3 1 Indoor Unit 55 70 685 q e loe z MODEL w W D 1007 14 Service Manual Technical Information Service Manual 3 2 Outdoor Unit
5. Main board is damaged Ge areali normal While nonzontallouver Replace the main board with the same model can t operate Installation and Maintenance o OW Service Manual 4 ODU fan Motor can t Operate Discriminating method air conditioner status Troubleshooting Connect wires according to wiring diagram to make sure all wiring terminals are connected Wrong wire connection or poor Check the wiring status according to circuit diagram he deviation range indicated on the nameplate of an capacitor Change compressor oil and refrigerant If no better replace the compressor with a new one Connect wires according to wiring diagram to Wrong wire connection or poor Check the wiring status according to circuit E make sure all wiring terminals are connected connection diagram Measure the capacity of fan capacitor with an Capacity of compressor is universal meter and find that the capacity is out off damaged he deviation range indicated on the nameplate of an capacitor Power voltage is a little low or Use universal meter to measure the power Supp EE TEE high oltage The voltage is a little high or low 99 quip ge reg Use universal meter to measure the resistance e Coil of compressor is burnt out Repair or replace compressor between compressor terminals and it s O Cylinder of compressor is blocked Compressor can t operate Repair or replace compressor 6 Air Conditioner is Leaking Discriminating method air con
6. 1 Bind up the connection pipe power cord and drain hose with the band As show in Fig 14 2 Reserve a certain length of drain hose and power cord for installation when binding them When binding to a certain degree separate the indoor power and then separate the drain hose As show in Fig 15 3 Bind them evenly 4 The liquid pipe and gas pipe should be bound separately at the end Fig 14 pipe Drain hose Connection pipe Drain hose Band Fig 15 Indoor power card A Note 1 The power cord and control wire can t be crossed or winding 2 The drain hose should be bound at the bottom 9 Hang the Indoor Unit 1 Put the bound pipes in the wall pipe and then make them pass through the wall hole 2 Hang the indoor unit on the wall mounting frame 3 Stuff the gap between pipes and wall hole with sealing gum 4 Fix the wall pipe As show in Fig 16 5 Check if the indoor unit is installed firmly and closed to the wall As show in Fig 17 a ae Indoor Outdoor Wall pipe i NW Y Sealing gum Li Upper hook Fig 16 Lower hook of wall mounting frame A Note Do not bend the drain hose too excessively in order to prevent blocking 47 8 6 Installation of Outdoor unit 1 Fix the support of outdoor unit select it according to the actual installation situation 1 Select installation location according to the house structure 2 Fix the support of out
7. If the plastic expansion particle is loose please drill another fixing hole nearby 3 Install Wall mounting Frame 1 Choose the position of piping hole according to the direction of outlet pipe The position of piping hole should be a little lower than the wall mounted frame As show in Fig 1 Wall Mark in the middle of it e Level meter S po Space N Zu ES es o the Wie 7 JN all Sub bove a qu Right 55 70mm Rear piping hole 2 Open a piping hole with the diameter of 55 or 70 on the selected outlet pipe position In order to drain smoothly slant the piping hole on the wall slightly downward to the outdoor side with the gradient of 5 10 As show in Fig 2 d d 55 or 070 k5 10 i OS Fig 2 A Note 1 Pay attention to dust prevention and take relevant safety measures when opening the hole 2 The plastic expansion particles are not provided and should be bought locally Indoor Outdoor 4 Outlet pipe 1 The pipe can be led out in the direction of right rear right left or rear left As show in Fig 3 2 When selecting leading out the pipe from left or right please cut off the corresponding hole on the bottom case As show in Fig 4 Le Rear left Fig 3 Right Rear right Left Right Cut off the hole Fig 4 46 Fig 1 l 55 70mm Rear piping hole 5 Connect the Pipe of Indoor Unit 1 Aim the pipe
8. Restart the unit Before protection occurs use DC voltmeter to measure the voltage between the two ends of electrolytic capacitor on control Voltage between he two ends of celectrolyti capacitor test 88 higher than Please confirm 1 If the indoor and outdoor heat exchangers are dirty If they are obstructed by other objects which affect the heat exchange of indoor and outdoor unit 2 lf the indoor and outdoor fans are working normally 3 If the Environment temperature is too high resulting in that the system pressure is too high and exceeds the permissible range 4 If the charge volume of refrigerant is too much resulting in that the system pressure is too 5 Other conditions resulting in that the system pressure becomes too high Reconnect the capacitor C2 according to Electrical Wiring Diagram Then Restart the unit Stop the unit and disconnect the power supply Then check the connection of capacitor C2 according to Electrical Wiring Diagram top the unit and disconnect the power supply Wait 20 minutes or us DC voltmeter to measure the voltage N between the two ends of capacitor C2 until the voltage is lower than 20V Replace the capacitor i Y C2 Then energize aeons and start the unit a Take corrective actions according to Technical Service Manual and then energize an
9. YOU Should adjust the compressor frequency by reducing 30Hz 90s till the lower limit After it was running 90s at the lower limit if T jequency reducing temperature at normal speed of module ST modules YOU Should stop the machine for module overheating protection 5 Power turn off If the Tpower tum off temperature of module ST modules YOU Should stop the machine for module overheating protection If Twodue lt T Limited frequency temperature of module and the compressor has been stopped for 3 minutes the machine should be allowed to operate 6 If protection continuously occurs for six times it should not be resumed automatically and you should press the ON OFF button to resume During the process of running if the running time of compressor exceeds the t protection times clearing of module the discharge protection is cleared to recount Stopped or transferred to supply air mode will clear the trouble times immediately if the trouble can not be resumed mode transferring also will not clear it 10 Compressor overloads protection If you measure the compressor overload switch action in 3s the compressor should be stopped for overloading The machine should be allowed to operate after overload protection was measured to resume If the overloading protection continuously occurs for three times it should not be resumed automatically and you should press the ON OFF button to resume The protection times of compressor is allowed to clear
10. ap 34 ss 73 a n A 80 31 35 13 04 74 3 04 113 0 93 la a ns 75 2 ma aam 2 na z 2 2 vs a em 38 ns 7 27682 ve 7 65 37 11 06 7 2 663 117 0 833 0 811 Installation and Maintenance D Service Manual Appendix 1 Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units 50K Temp C Resistance kQ Temp C Resistance kQ Temp C Resistance kQ Temp C Resistance kQ to es 29 853 5 1834 88 4 75 Le ar o La s 4 1 e 100 O lt Installation and Maintenance Johnson WY Controls 2013 Johnson Controls Inc www johnsoncontrols com Doc MUHJZHAMQ 130508 Johnson Controls reserve the right to change product features without prior notice
11. operate at such level The fan can also be set at auto state 8 Power failure memory function What will be memorized includes modes up and down wind blow light preset temperature preset wind speed general timing no memory for moment timing and Fahrenheit Celsius degree When the unit is powered on again after power failure operation continues according to memorized content If timing is not set by the last remote control command the system will memorize the last remote control command and operate in the mode specified in the last remote control command If timing is set by the last remote control command and power failure happens before the preset time the system as powered on again will memorize the timing function set by the last remote control command Timing will be re counted from the time at which the system is powered again If timing is set by the last remote control command and timing of start or stop is reached before power failure the system as powered on again will memorize operation state before power failure and will not perform timing action Moment timing is out the range of memory 9 Locked Protection of PG Motor When starting up the fans if the motor has run at a lower speed continuously for a period for preventing automatic protection of the motor stop running and display the locked operation if the machine is running at present the code of the locked fault H6 of double eight digital tubes will be displayed i
12. 6 22 17 14 23 1630 eer eee E 14 102 9 a eee nme ee ENNE ENEN 82 75 12 6 78 43 3 711 3 579 3 217 3 105 2 797 2 702 2 439 2 358 2 133 2 064 1 871 1 811 1 645 1 594 1 544 1 497 1 451 1 408 103 104 tos 106 107 108 mn tio 111 112 117 118 119 120 121 122 123 124 125 126 127 128 Service Manual 1 071 1 039 1 009 0 925 0 898 0 825 0 802 0 737 0 717 0 697 0 678 me os 0 625 0 608 0 592 0 577 0 532 0 519 0 505 0 492 0 48 0 467 a Ce wa ET o 1e 1s J Installation and Maintenance Service Manual Appendix 1 Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units 20K FempC6 Resistance ka Leer Resistance Ter essence Temp 6 Resistance vo wma o 20m os ss 121 Te ma a ae o aos e rms alen 2 ze a am 100 me 6 6 16 153 3 23 21 85 2 4 605 101 1 307 15 145 24 20 9 63 4 443 102 1 269 ta 293 25 2 6 4280 tos 123 as 129 114 es au 14 um 12 123 27 18 13 3 998 105 1 164 mes 2e ws e7 ase 1 un to nos 29 s es 3720 107 o 146 161 eo 3603 tos le wem 31 1543 7o 341 19 1039 7 oa 232 14 79 3 364 110 1 01 6 sem 3 ms z 3202 m 5
13. Fan Motor Speed Output of Fan Motor Outdoor Unit Motor RLA Fan Motor Capacitor 3 5 Air Flow Volume of Outdoor Unit Fan Type Defrosting Method Climate Type T1 Moisture Protection IP24 Se 5 6 1 5 0 0 5 A A C Cc C m m m m A F KA m S Pressure for the Discharge Side A Pressure for the Suction Side A A m m m g g g m m m m m m Eed 4000 Pp Axialflow Pp 552 po Automatic Defrosting Sound Pressure Level WML BA 1083X488X855 5 dB A Dimension WXHXD mm Dimension of Carton Box LXWXH mm Dimension of Package LXWXH mm NetWeight kg Gross Weight kg Refrigerant R410A kg Oom gm mm mm mo Length Gas Additional Charge Outer Diameter Liquid Pipe Connection e gt Pi Outer Diameter Gas Pipe 016 ipe Note The connection pipe applies metric diameter 8 1 The above data is subject to change without notice Please refer to the nameplate of the unit 10 O Technical Information Service Manual 2 2 Operation Characteristic Curve 18K Cooling 11 r 7 10 Le Conditions Indoor DB26 7 C WB19 4 C 9 Outdoor DB35 C WB23 9 C g Indoor air flow Turbo T TF E 6 2 5 6 4 3 2 1 0 0 10 20 30 40 50 60 70 80 90 Compressor speed rps 24K Cooling 11 10 His Conditions Indoor DB26 7 C WB19 4 C 9 Outdoor DB35 C WB23 9 C g Indoor air flow Turbo Pipe length Dm a 7H 6 E
14. OTm O a WE Y 3 5 2 au TTT 5 YE a 5 3 3 9 o 3 2 la E lt lt jo 2 lo lt olalslelels o o a EE SS 5 e Lea Ke E 5 O p IfO Jo a OD D 3 0 o 3 o Kei ON Ke Ke O Di EEAEAE gt o ol gt s5 s 2 c 3 jeje ly gt g Sluolo x lO VE ojo o o ala wi m 27 42 coon IE r min 1350 1150 950 850 r min 1400 1200 1000 900 35 Fan Type SH H M L SL SH H M L SL Fan Motor RLA mm mm mm A A mm Uw mm Goen mm S Evaporator Form Indoor Pipe Diameter Unit Row fin Gap LXDXW Fuse ae Hz E mn in ww ww Wi mm min min E mm mm mm me SH H M L SL d ound Power Level SH H M L SL Dimension WXHXD a W W nN Dn OOO a O CIS S SE kb al I eIk U ol lt 3 ajoja p oss AE ala ag o o lt o SI 3 OD D O 5 CO 9 O Di Ss O D CO x Net Weight O Y a O APIE n 5 D 5 S Q 3 9 U Di O 2 Di Q oO Technical Information o Service Manual Model of Outdoor Unit Compressor Manufacturer Trademark Overload Protector Throttling Method Operation temp Ambient temp cooling Ambient temp heating Rows fin Gap dB m m m k k k g m m YEHJYHO24BAMTA X ZHUHAI LANDA COMPRESSOR O d D 1440 1NT11L 6233 or KSD115 C or Alumin D 4 Q 25 7 2 D a 6 30 0 CO D7 Coil Length LXDXW 984X38 1X748
15. This model hasn t outdoor ambient temperature display function While remote controller can operate and indoorgnit displays set temperature e It s defaulted to display set temperature when turning on the unit e Only for the models with temperature indicator on indoor unit TURBO Press this button to activate deactivate the Turbo function which enables the unit to reach the preset temperature in the shortest time In COOL mode the unit will blow strong cooling air at super high fan speed In HEAT mode the unit will blow strong heating air at super high fan speed X FAN 203 X FAN function in COOL or DRY mode the icon dis displayed and the indoor fan will continue operation for 2 minutes in order to dry the indoor unit even though you have turned off the unit After energization X FAN OFF is defaulted X FAN is not available in AUTO FAN or HEAT mode Ge function turn on the display s light and press this button again to turn off the display s light If the light is turned on is Ge displayed If the light is turned off SR disappears FEEL Press this button to turn on FEEL function The unit automatically adjust temperature according to the sensed temperature Press this button again to cancel FEEL function FA Press this button to achieve the on and off of healthy and scavenging functions in operation status Press this button for the first time to start scavenging function LCD displays Press the button for
16. Zo P C board Soldered surface 2 As shown below connect the discharge resistance approx 100Q20W or plug of the sold ering iron to voltage between terminals of the electrolytic capacitor test3 D and E point on PC Board for 30s and then peformedischarging NOTE A large capacity electrolytic capacitor is used in the outdoor unit controller inverter Therefore if the power supply is turned off charge charging voltage DC280V to 380V remains and disc harging takes a lot of time After turning off the power source if touching the charging section before discharging an electrical shock may be caused Discharge the electrol ytic capacitor completely by using soldering iron etc Installation and Maintenance Service Manual 9 2 Procedure of Troubleshooting Confirm the malfunction type according to indoor or outdoor malfunction indicator and malfunction sheet usually it is stuck on the electric box cover or the top cover of the unit The indicators of outdoor control board will directly display the corresponding malfunction if there is a malfunction Some malfunctions are displayed directly on the indoor displayer and some malfunctions can be viewed only by remote controller by pressing light button for four times within 3s In the below malfunction chart Y means Yes N means No control board AP1 means outdoor control board Before malfunction check discharge the electrolytic capacitor ac
17. be maintained this condition should be executed when compressor ressor statr up the super high speed will not rotate When Tamb Tset 21 C the fan will return to the setting fan speed 2 Dehumidifying mode 1 Under this mode fan motor will run atlow speed swing will work at setting status setting temp range is 16 30 C 61 86 Fahrenheit scale 2 Outdoor unit malfunction or protection unit will stop indoor unit will keep original running status malfunction displayed 3 Fan mode Under this mode indoor fan motor couldbe setted at high middle low or auto speed compressor outdoor unit and valve will stop to run Under this mode temp range should be 16 30 C 61 86 Fahrenheit scale 4 Heating mode 1 Under this mode temp range should be 16 30 C 61 86 Fahrenheit scale 2 Working condition and procedure of heating mode When unit turn on and enter into heating mode indoor unit enter into anti cool wind mode when unit is stop running and indoor fan motor turns on blowing heat will act 3 Protection function under heating mode compressor will stop to run due to malfunction happened indoor fan motor will blow surplus heat 4 Defrosting control When receiving the defrost ing signal from outdoorunit displayerwill Heating indicator on indoor display is off for 0 5s and then on for 10s during blinking 1Oslater indoor fan motor will stop to run 5 Anti coold wind function 6 Blow heat air function a lf heating temp meets the compr
18. button six times within 3s to call out relevant failure protection code Quit the failure remote calling mode push the light button six times within 3s or call out failure display to enter it for 5 minutes and then quit 3 Other control targets 1 Up and down wind blow functions When the unit is powered on the up and down wind blow motor will turn a wind deflector anti clockwise to Position O to shut down the air outlet When the unit is switched on and wind blow function is not preset under the heating mode up and down wind blades will turn clockwise to position D and under other modes the up and down wind blades will turn clockwise to position L If wind blow function is set at the same time as the unit is switched on the wind blades will swing between position L and D The wind blades can be kept in seven states position L position A position B position C position D swing between position L and D stop at one position from L to D When the unit is turned off the wind deflector will be closed up to position 0 Wind blow action is effective only when wind blow commands are set and the indoor unit is running Note When the wind blades are set at position L to B position A to C or position B to D through remote setting the wind deflector will swing between position L and D L A B C D 2 Buzzer When the controller is powered on signals from a remote controller are received or the auto button is pushed a buzzer will give o
19. for six times it should not be resumed automatically and you should press the ON OFF button to resume if the fault keeps on During the process of running if the running time of compressor exceeds the t overload protection times zero clearing time the times of overload protection power turn off should be cleared to recount The mode of stopping the machine or transferring to supply air will clear the trouble times immediately if the trouble can not be resumed transferring mode will not clear it Overload protection function at the mode of heating Starting estimation After the compressor stopped working for 180s if T inner pipe T heating overload frequency limited temperature the temperature of hysteresis is 2 the machine is allowed to start otherwise it should not be started and should be stopped to treat according to the overload protection Clear the trouble at the mode of power turn off heating and the protection times are not counted 1 Frequency limited If Theating overload frequency limited temperature lt T inner pipe lt Theating overload frequency reducing temperature at normal speed you should limit the frequency raising of compressor 2 Reducing frequency at normal speed and stopping machine If T heating overload frequency reducing temperature at normal speed lt T inner pipe lt T heating overload frequency reducing temperature at high speed you should adjust the compressor frequency by reducing 8Hz 90s till
20. joint at the corresponding bellmouth As show in Fig 5 2 Pretightening the union nut with hand 3 Adjust the torque force by referring to the following sheet Place the open end wrench on the pipe joint and place the torque wrench on the union nut Tighten the union nut with torque wrench As show in Fig 6 4 Wrap the indoor pipe and joint of connection pipe with insulating pipe and then wrap it with tape As show in Fig 7 Open end wrench Union nut Pipe ULA 7 Fig 5 Indoor pipe Fig 6 NED wv Insulating pipe Fig 7 Refer to the following table for wrench moment of force Hex nut diameter mm Tightening torque N m 15 20 9 52 30 40 45 55 60 65 70 75 6 Install Drain Hose 1 Connect the drain hose to the outlet pipe of indoor unit As show in Fig 8 2 Bind the joint with tape As show in Fig 9 Drain hose Outlet pipe Bs as A CSS A tape gt Outlet Drain hose Fia 9 Fig 8 pipe bal A Note 1 Add insulating pipe in the indoor drain hose in order to prevent condensation 2 The plastic expansion particles are not provided As show in Fig 10 ___ Drain hose Se NX AR Po SN Insulating pipe Fig 10 Installation and Maintenance Service Manual 7 Connect Wire of Indoor Unit 1 Open the panel remove the screw on the wiring cover and then take down the cover As show in Fig 11 Panel Screw Fig 11 7 Wir
21. on remote controller blinks Press or button to adjust TIMER OFF setting After each pressing or button TIMER OFF setting will increase or decrease 1min Hold or button 2s later the time will change quickly until reaching your required time Press TIMER OFF word OFF will stop blinking icon resumes displaying Cancel TIMER OFF Under the condition that TIMER OFF is started up press TIMER OFF button to cancel it Note e Under on and off status you can set TIMER OFF or TIMER on simultaneously e Before setting TIMER ON or TIMER OFF please adjust the clock time e After starting up TIMER ON or TIMER OFF set the constant circulating valid After that air conditioner will be turned on or turned off according to setting time ON OFF button has no effect on setting If you don t need this function please use remote controller to cancel it 8 X FAN Button Press this button under cool and dry mode to start up x fan function and d i icon on remote controller will be displayed Press this button again to cancel x fan function and icon will disappear Note e When x fan function is started up if the air conditioner is turned off indoor fan will still operate at low speed for a while to blow the residual water inside the air duct e During x fan operation press X FAN button to turn off x fan function Indoor fan will stop operation immediately 9 TEMP Button By pressing this button y
22. stop running Service Manual Pls refer to troubleshooting Pls refer to troubleshooting Pls refer to troubleshooting Pls refer to troubleshooting Compressor current testing circuit malfunction EEPROM malfunction Capacitor charge malfunction Module sensor circuit diagram Module temp over high protection DC Bus voltage dips Low DC Bus voltage protection IPM temp is too high limit decrease frequency Four way valve abnormal Outdoor unit 37 zero cross detecting error Off 3s blink 13 times Off 3s blink 15 times Off 3s blink 17 times Off 3s blink 19 times Off 3s blink 20 times Off 3s blink 21 times Cooling dehumidifying compressor stops running indoor fan motor works Heating all will stop running Cooling dehumidifying compressor stops running indoor fan motor works Heating all will stop running Cooling dehumidifying compressor stops running indoor fan motor works Heating all will stop running Cooling dehumidifying compressor stops running indoor fan motor works Heating all will stop running Cooling dehumidifying compressor stops running indoor fan motor works Heating all will stop running Cooling dehumidifying compressor stops running indoor fan motor works Heating all will stop running Over load normal works compressor runing frequency declines This malfunction happened only in heating mode all will stop to run
23. the second time to start healthy and scavenging functions simultaneously LCD displays y and Press this button for the third time to quit healthy and scavenging functions simultaneously Press the button for the fourth time to start healthy function LCD display 5 Press this button again to repeat the operation above This function is applicable to partial of models Combination of and buttons About lock Press and buttons simultaneously to lock or unlock the keypad If the remote controller is locked a is displayed In this case pressing any button a blinks three times Combination of MODE and buttons About switch between Fahrenheit and centigrade At unit OFF press MODE and buttons simultaneously to switch between C and F 30 O Technical Information Service Manual Combination of TEMP and CLOCK buttons About Energy saving Function Press TEMP and CLOCK simultaneously in COOL mode to start energy saving function Nixie tube on the remote controller displays SE Repeat the operation to quit the function Combination of TEMP and CLOCK buttons About 8 C Heating Function Press TEMP and CLOCK simultaneously in HEAT mode to start 8 C Heating Function Nixie tube on the remote controller displays OI and a selected temperature of 8 C 46 F if Fahrenheit is adopted Repeat the operation to quit the function About Back lighting F
24. 022 2 LL 220 2 2 250 350 Installation and Maintenance Service Manual Appendix 3 Pipe Expanding Method A Note Improper pipe expanding is the main cause of refrigerant leakage Please expand the pipe according to the following steps Y 90 A Cut the pip e Confirm the pipe length according to the distance of indoor unit and outdoor unit e Cut the required pipe with pipe cutter B Remove the burrs e Remove the burrs with shaper and prevent the burrs from getting into the pipe C Put on suitable insulating pipe agen D Put on the union nut Union pipe e Remove the union nut on the indoor connection pipe and outdoor valve install the union nut on the pipe Pipe E Expand the port e Expand the port with expander Note e A is different according to the diameter please refer to the sheet below n 26 6 35 1 4 Outer diameter mm 09 52 3 8 12 12 70 1 2 016 15 88 5 8 F Inspection Smooth surface e Check the quality of expanding port If there is any blemish expand the port again according to the steps above O leaning damaged crack uneven surface thickness The length is equal Installation and Maintenance o OW 97 Appendix 4 List of Resistance for Ambient Temperature Sensor 98 Appendix 1 Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units 15K EEDE Tro rescata Ce Pe Tia lan Pm Tom a 128 6 21 17 93 121
25. 10 m prolonging connection pipe 18000 Btu h 5274 W 10m e After the length of connection pipe is prolonged for 10m at the basis 24000 Btu h 7032 W 10m of standard length you should add 5ml of refrigerant oil for each 28000 Btu h 8204 W 10m additional 5m of connection pipe 36000 Btu h 10548 W 20m e The calculation method of additional refrigerant charging amount on 42000 Btu h 12306 W 20m the basis of liquid pipe 48000 Btu h 14064 W 20 m Fahrenheit display temperature Cr Service Manual Fahrenheit CF Celsius C gt 28 Fahrenheit display temperature 91 92 93 94 95 96 97 98 Cooling capacit Max length of Max height g capacity connection pipe difference 5000 Btu h 1465 W 5m 7000 Btu h 2051 W 5m 9 s 30 e When the length of connection pipe is above 5m add refrigerant according to the prolonged length of liquid pipe The additional refrigerant charging amount per meter is different according to the diameter of liquid pipe See the following sheet e Additional refrigerant charging amount prolonged length of liquid pipe X additional refrigerant charging amount per meter Additional refrigerant charging amount for R22 R407C R410A and R134a Diameter of connection pipe Outdoor unit throttle Liquid pipe mm Gas pipe mm Cooling only g m Cooling and heating g m o e 0950012 15 06 or 09 5 o160r019 15 15 15 30 50 350 19 or 922 2 025 4 or 031 8
26. 30 u m a a Main check points els outdoor ambient temperature in normal range eAre the outdoor and indoor fans operating normally els the heat dissipation environment inside and outside the unit good including if the fan speed is too low els the tube temperature sensor of indoor and outdoor unit normal Fault diagnosis process Overload and high temperature protection Is outdoor ambient temperature higher than 53 C in cooling mode Is indoor and outdoor ambient temperature too high in Normal protection please operate Y it after the outdoor ambient temp erature is normalized heating mode Is heat dissipation of the indoor unit and outdoor unit abnormal Y Improve the heat dissipatioy gt environment of the unit Does the indoor and outdoor fan work normally Zz motor is broken Y 1 Check if the fan terminal OFAN is connected correctly 2 If the indoor and outdoor Check if the temperature sensor is normal according to the Resistance Table of Tube Temperature Sensors check outdoor tube Y temperature in cooling mode and check Replace the fan indoor tube temperature in heating mode 8 capacitor C1 Y Replace the outdoor fan Is the tube temperature sensor normal Shut down the power and wait 20min Y Replace corresponding control board replace outdoor control board in cooling mode and replace indoor control Re
27. 5 O Ar 3 2 a 4 0 i H H i H H H a 0 10 20 30 40 50 60 70 80 90 Compressor speed rps Technical Information O Heating Current A Heating Current A 11 0 11 10 A A DN OO o a NOUO 0 Conditions Indoor DB21 1 C WB15 6 C Outdoor DB8 33 C WB6 11 C Indoor air flow Turbo Pipe length Dm 10 20 30 40 50 60 70 80 90 100 110 120 Compressor speed rps Outdoor DB8 C WB6 11 C Indoor air flow Turbo i Pipe length 5m 10 20 30 40 50 60 70 80 90 100 110 120 Compressor speed rps 11 Service Manual 2 3 Capacity Variation Ratio According to Temperature Cooling Heating 105 110 100 3 E oo 2 2 i 80 E Oo GS 70 j Pid todd en ne o i ER S Conditions K amp 60 Conditions Indoor DB 26 7 C WB19 4 C Indoor DB21 1 C WB15 6 C H x j A R helf Indoor air flow Turbo 50 F Indoor air flow Turbo Pipe length 5m Pipe length 5m H i H H H H H H 40 i i i H H t H i i i i i i i i i i i i i i 32 33 34 35 36 37 38 39 40 4 42 43 15 10 5 0 5 Outdoor temp C Outdoor temp C 2 4 Cooling and Heating Data Sheet in Rated Frequency Cooling Rated cooling Pressure of gas pipe Inlet and outlet pipe c condition C connecting indoor and temperature of heat ca DB WB outdoor unit exchanger sa Peay tae Tare 26 19 35 24 indoor unit outdoor unit
28. If the compressor is shut down and Tsetup Tindoor ambient temperature 4 Tcooling indoor ambient temperature compensation lt 0 5 start up the machine for cooling the cooling operation will start 2 During operations of cooling if 0 C lt Tsetup Tindoor ambient temperature _4 Tcooling indoor ambient temperature compensation lt 2 the cooling operation will be still running 3 During operations of cooling if 2 C lt Tsetup Tindoor ambient temperature _4 Tcooling indoor ambient temperature compensation the cooling operation will stop after reaching the temperature point 2 Temperature setting range 1 If Toutdoor ambient temperature gt Tlow temperature cooling temperature the temperature can be set at 16 30 C Cooling at room temperature 2 If Toutdoor ambient temperature lt Tlow temperature cooling temperature the temperature can be set at 25 30 C Cooling at low temperature that is the minimum setting temperature for outer units judgment is 25 C Technical Information o 35 Service Manual 2 Dehumidifying Mode 1 Conditions and processes of dehumidifying operations Same as the cooling mode 2 The temperature setting range is 16 30 C 3 Air supplying Mode 1 The compressor outdoor fans and four way valves are switched off 2 The temperature setting range is 16 30 C 4 Heating Mode 1 Conditions and processes of heating operations Tindoor am
29. SERVICE MANUAL il YORK BY JOHNSON CONTROLS Mini Split Air Conditioner YEHJZH018 24BAMTAFX Read this manual before installation and operation Make sure that it is well kept for later reference Johnson Ah Controls Service Manual Table of Contents Part Technical Information 1 4 Summary EE 1 2 Specifications PO Sn 3 pa A A a 3 2 2 Operation Characteristic CUB ind A 11 2 3 Capacity Variation Ratio According to Temperature occccccccccccccnnnnnnnnnonnnanoncnnnnnnnnnnnnos 12 2 4 Cooling and Heating Data Sheet in Rated Frequency ccccccccccccnccnonononnnnnonnnncnnncnnnnnnnnos 12 2 5 Noise Criteria Curve Tables for Both Models nnen nnen nennenenseneneneenenn 13 3 Outline Dimension Diagram O EEE TE 14 A Qe PP 14 3 2 Outdoor AA A A eeu nbs eia 15 4 Refrigerant System Diagram AAA 16 5 Electrical bat 17 O IAI UI E 17 A AA A PR PP o E E 22 6 Function and Control 24 6 1 Remote Controller Introduccion dd aa 24 6 2 Brief Description of Modes and Functions aan onennennenennenerenrenseneeenn ennen 32 Part ll Installation and Maintenance ocacion 41 7 Notes for Installation and Nanmtenance 41 8 Installatnen ono nana 43 8 1 Installation Dimensi n Dias iia 43 8 2 Installati n PC MIN RN 45 8 3 Selection of Installation Location 45 8 4 Requirements Forelectric Connection nanne en enennennenensenneenrenreeneeenenvennen 45 8 5 Installation st Indoor UNE znne abana 45 8 6 Install
30. a i M Pa F MARK AREA K EL Interface of IDU and ODU 1 SA Po H Ber 12 communication 037103730372 naps EN uu HEAT N ee ENE Ee 9 Auto button 5 JE pss Ef 10 Up 8 down swing C373 5 ves prp OT 3 Feedback interface of PG motor mms U6 R DLL pi ZE Display interface pen Jumper cap PPP Ir Ee eit b ULL ES Interface of ambient temperature S HH E Pee L Be U lo De Heer LA 13 sensor wel SC ider n Interface of tube temperature ss vt O Pu HHRHH E sensor R20R12R19 us col T IRs RIOR O da R 4 TTT ri TT DD ess 9 FT vn HK e Meel kl HH EE Mh 706 19 2 bal batt W KE kW om e a E dE B C122 E e meea 7 me KEYI EE OOMRORGEOE f TUBE P ROOM 15 14 e Bottom view O o O o SEH Kee k a O sp EI ege ht agi Technical Information Service Manual Outdoor Unit e Top view oe T Zoi GRJW843 AS V1 a J111 3107 Jus ez Hds A J106 O De a cau e LA c302 303 RZ e Bottom view 12 No No ee terminal of compressor 5 Terminal of outdoor fan GE Live wire of power supply compressor Terminal of outdoor temperature Wiring terminal of chassis Neutral wire of power CSS electric heate
31. after the compressor run t protection times clearing of compressor overloading 30 minutes 11 Phase current overcurrent protection of compressor During the running process of compressor you could measure the phase current of the compressor and control it according to the following steps 1 Frequency limited If l Limited frequency phase current Ll phase current T frequency reducing phase current YOU Should limit the frequency raising of compressor 2 Reducing Frequency If l Frequency Reducing Phase Current Sl Phase Current lt I power Tun Op Phase Current the compressor shall continue to reduce frequency till the lowest frequency limit or out of the condition of reducing frequency 3 Power turn off If l phase current Ll power Tum off Phase Current the Compressor phase current shall stop working for overcurrent protection if I phase current SL Frequency Reducing Phase Current ANA the compressor have stopped working for 3 min the machine shall be allowed to operate 4 If the overcurrent protection of compressor phase current continuously occurs for six times it should not be resumed automatically and you should press the ON OFF button to resume During the process of running if the running time of compressor exceeds the t clearing Time of Compressor Phase Current Times the overcurrent protection is cleared to recount 12 Starting up Failure Protection for Compressor Stop the compressor after its starting up fails
32. and drainage pipe Connect wires of indoor unit Bind up pipes and hang the indoor unit only for cooling and heating unit Install drainage joint of outdoor de Make the bound pipes pass through the wall hole and then connect outdoor unit Connect pipes of outdoor unit Connect wires of outdoor unit Neaten the pipes Vacuum pumping and leakage detection Check after installation and test operation Finish installation Note this flow is only for reference please find the more detailed installation steps in this section 44 Installation and Maintenance Service Manual 8 2 Installation Parts checking No Name No Name 8 Sealing gum Outdoor unit 9 Wrapping tape Connection pipe 10 Support or G td or unit Drainage pipe 11 Fixing screw Wall mounting Drainage plug cooling 5 12 f i frame and heating unit Connecting Owner s manual 13 cable power cord remote controller 7 vial pipe mn A Note 1 Please contact the local agent for installation 2 Don t use unqualified power cord 8 3 Selection of Installation Location 1 Basic Requirement Installing the unit in the following places may cause malfunction If it is unavoidable please consult the local dealer 1 The place with strong heat sources vapors flammable or explosive gas or volatile objects spread in the air 2 The place with high fre
33. ansferring mode will not clear it Protective function for discharge temperature of compressor 1 Starting estimation After the compressor stopped working for 180s if TDischarge lt T Discharge limited temperature the temperature of hysteresis is 2 C the machine is allowed to start otherwise it should not be started and should be stopped to treat according to the discharge temperature The machine should be stopped or transferred to supply air the trouble should be cleared immediately and the protection times are not counted 2 Frequency limited If TLimited frequency temperature during discharging lt T Discharge lt T frequency reducing temperature at normal speed during discharging you Should limit the frequency raising of compressor 3 Reducing frequency at normal speed and stopping machine lf Tfrequency reducing temperature at normal speed during discharging lt TDischarge lt T frequency reducing temperature at high speed during discharging you should adjust the compressor frequency by reducing 8Hz 90s till the lower limit After it was running 90s at the lower limit if Tfrequency reducing temperature at normal speed during discharging ST Discharge you should discharge to protect machine stopping 38 0 09 Technical Information Service Manual 4 Reducing frequency at high speed and power turn off If Tirequency reducing temperature at high speed of module ET module lt T power turn off temperature of module
34. ar Operation temp 16 30 Ambient temp cooling 15 43 Ambient temp heating 15 24 Condenser Form AluminumFin copper Tube Pipe Diameter Rows fin Gap Coil Length LXDXW Fan Motor Speed 750 Outdoor Een Motor RLA Air Flow Volume of Outdoor Unit Fan Type O EE A Overload Protector Fan Diameter p520 Defrosting Method Automatic Defrosting Climate Type Isolation Moisture Protection Permissible Excessive Operating Pressure for the Discharge Side Permissible Excessive Operating wel os Pressure for the Suction Side Sound Pressure Level H M L dB A Sound Power Level H M L dB A Dimension WXHXD 965X700X396 Dimension of Carton Box LXWXH 1026X455X735 Dimension of Package LXWXH Net Weight Gross Weight Refrigerant Refrigerant Charge Length Gas Additional Charge _ Outer Diameter Liquid Pipe Connection a Pipe Outer Diameter Gas Pipe Max Distance Height Max Distance Length Note The connection pipe applies metric diameter The above data is subject to change without notice please refer to the nameplate of the unit o Technical Information Service Manual Product Code YEHJZHO24BAMTAFX CB171007901 Y GI 2220 Rated Input 2800 Air Flow Volume SH H M L SL m h wi wi Rated Voltage Rated Frequency Power Supply Phases Power Supply Mode Cooling Capacity Heating Capacity Cooling Power Input Heating Power Input Cooling Power Current Heating Power Current m gt
35. ation Of Qutdoor UN erce 48 8 7 Vacuum Pumping and EE 49 8 8 Check after Installation and Test Operation una annen nnnnennenenenrennen eeen env eneen 49 9 Maintenance eenen 50 9 1 Flashing LED of Indoor Outdoor Unit and Primary Judgement nen 50 9 2 Proced re OF Troubleshoot EE 55 9 3 Maintenance Method for Normal Malfunchon nenneneneeeenenne eenen ensen 63 Service Manual 10 Exploded View and Parts List 65 sl fa indoor EE 65 10 2 Outdoor UN EE 75 11 Removal Procedure en 79 11 1 Removal Procedure of Macoris 79 11 2 Removal Procedure of Outdoor nica rreraren 84 Appendix EE 95 Appendix 1 Reference Sheet of Celsius and Fahrenheit oooocccccccnccnniniccnonoonnnncnnncnnnnnos 95 Appendix 2 Configuration of Connection PIPE asi ds 95 Appendix 3 Pipe Expanding Method secas io ori 96 Appendix 4 List of Resistance for Ambient Temperature Sensor annen eeen 97 Service Manual Part Technical Information 1 Summary Indoor Unit YEHJXHO18BAMT FX YEHJXHO24BAMT FX Technical Information 0 Service Manual Outdoor Unit YEHJYHO18BAMTA X YEHJYHO24BAMTA X Remote Controller a WOE oE ur Dee CW 5 Ge GX CA Ce me Ee me 0 0 Technical Information Service Manual 2 Specifications YEHJZHO18BAMTAFX CB171007801 a Hz Air Flow Volume SH H M L SL m h wn wi wi Product Code els Wd is dd assess le Rated Voltage Rated Frequency Power Sup
36. ation state the system will continue to operate if timing start is set when the system is at stop as the preset time is reached the system will start to run in preset mode Timing stop if timing stop is set when the system is at stop state the system will keep standby if timing stop is set when the system is in operation as the preset time is reached the system will stop running Timing change When the system is in timing mode start and stop can be set through the On Off button on the remote controller or timing time can be reset and the system will operate according to the latest setting When the system is in operation and both timing start and stop are set the system will stay at currently set operation state When preset timing stop time is reached the system will stop working When the system is at stop state and both timing start and stop are set the system will keep at stop state When preset timing start time is reached the system will start operation From then on the system will operate in preset mode at a preset start time and stop at a preset stop time everyday If timing stop time is set as the same as timing start time a stop command will be executed 6 Dry and mildew proof function Dry and mildew proof function can be set in cooling and dehumidification modes 7 Control of indoor fan Indoor fan can be set at four levels super high high middle and low with a remote controller When one level is set the fan will thus
37. bient temperature is the actual detection temperature of indoor environment thermo bulb Theating indoor ambient temperature compensation is the indoor ambient temperature compensation during heating operations 1 If the compressor is shut down and Tindoor ambient temperature _4 Theating indoor ambient temperature compensation Tsetup lt 0 5 start the machine to enter into heating operations for heating 2 During operations of heating if 0 C lt Tindoor ambient temperature Theating indoor ambient temperature compensation Tsetup lt 2 the heating operation will be still running 3 During operations of heating if 2 C lt Tindoor ambient temperature Theating indoor ambient temperature compensation Tsetup the heating operation will stop after reaching the temperature point 2 The temperature setting range in this mode is 16 30 C 3 Special Functions Defrosting Control Conditions for starting defrosting After the time for defrosting is judged to be satisfied if the temperature for defrosting is satisfied after detections for continuous 3minutes the defrosting operation will start Conditions of finishing defrosting The defrosting operation can exit when any of the conditions below is satisfied a Toutdoor pipe temperature gt Toutdoor ambient temperature Ttemperature 1 of finishing defrosting The continuous running time of defrosting reaches tmax defrosting time 4 Co
38. ce refrigerant container 000 Installation and Maintenance Service Manual 8 Installation 8 1 Installation Dimension Diagram Installation dimension diagram A Space to the ceiling 15 gen AA SS Space to the wall IS 15cm 15cm Above Space to the wall Al UMD 250 e A apos E MF e Air outlet side NT d Space to the floor e The dimensions of the space necessary for proper installation of the unit include the minimum permissible distances to adjacent parts A Space to the obstruction 50cm Above Space to the wall 50cm Above Schematic diagram being reference only outdoor unit is with variation x el a Air outlet side we please refer to real product for authentic information Installation and Maintenance o OW 43 Service Manual Installation procedures Start installation Preparation before installation Read the requirements select installation Prepare tools for electric connection location Select indoor unit Select outdoor unit installation location installation location Install wall mounting Install the support of outdoor unit frame drill wall holes select it according to the actual situation Fix outdoor unit Connect pipes of indoor unit
39. ch is set currently is displayed 2 In defrosting mode heating indicator on indoor display is off for 0 5s and then on for 10s during blinking 3 Set temperature is displayed on Double 8 0 09 Technical Information Service Manual eDisplay of operation patterns and mode patterns When the unit is powered on all patterns will be displayed and the standby operation indicator will become red When the unit is turned on through a remote controller the operation indicator is light At the same time operating mode patterns mode indicators include cooling heating and dehumidification modes set currently are displayed and dynamic display patterns of wind speed are displayed If the light button is switched off all display will be turned off eTemperature display control mode of separated air conditioner When user sets the remote controller at set temperature display currently set temperature will be displayed 2 Only when remote signals are converted from other display states into indoor ambient temperature display state the remote controller will display indoor ambient temperature for 3 seconds and then return to set temperature display 3 Only when remote signals are converted from other display states into outdoor ambient temperature display state the remote controller will display outdoor ambient temperature for 3 seconds and then return to set temperature display If the controller is lack of outdoor display functions as th
40. cording to the mentioned method and make sure the voltage is below 20V Otherwise it may cause electric shock or broking the control board 1 Capacitor charge fault Fault with outdoor unit Malfunction indicator of outdoor unit D5 De me D30 o o u Main Check Points eUse AC voltmeter to check if the voltage between terminal L and N on the wiring board XT is within 210VAC 240VAC els the reactor L correctly connected Is the connection wire loose or fallen Is the reactor L damaged Fault diagnosis process Turn on the unit and wait 1 minute Use DC voltmeter to measure the voltage on the two ends of electrolytic capacitor test 8 Fault with the voltage Y testing circuit on Replace the control control panel AP1 panel AP1 Voltage higher than 200V N y Measure the AC voltage between terminalL andN on wiring board XT Voltage within and repair the power 210VAC 250VAC supply to restore the range 210VAC 250VAC power on and If the fault is restart the unit eliminated Y y Shut down the power and wait 20 minutes or use DC voltmeter to measure the voltage N on the two ends of capacitor until the voltage is lower than 20V Check the connection of reactor L in the Electrical Wiring Diagram Connect the reactor L according to Elec trical Wiring Diagr am correctly If the wiring
41. d start the unit Remove the wires on the two ends of capacitor C2 Then use capacitance meter to measure the capacitor C2 Verify as per the Parameters Sheet If the unit can work normallv Refer to the Electrical Wiring Diagram and check if the connection between AP1 and COMPis loose and if the connection order is correct If there is any abnormality described above If the unit can work normally onnect the control panel AP1 and compressor COMP correctly according to the Electrical Wiring Diagram Then energize nd start the unit If the connection between AP1 and COMP is unsecure or the connection order is wrong If the unit cal work normally Use ohmmeter to measure the resistance between the three terminals on compressor MP and compare the measurements with the compressor resistance on ervice Manual Ifthe resistance is normal Use ohmmeter to measure the resistance between the two terminals of compressor COMP and copper tube Resistance higher than 500MQ 56 0 9 Installation and Maintenance Service Manual 3 High temperature and overload protection diagnosis Check the outdoor unit in cooling mode and check the indoor unit in heating mode Malfunction indicator of outdoor unit D5 De Die D
42. ditioner status Troubleshooting Replace the compressor capacitor Drain pipe is blocked ater leaking from indoor unit e UN the foreign objects inside thedraim rain pipe is broken ater leaking from drain pipe Replace drain pipe Wrapping is not tight Wee EENEG rap it again and bundle it tightly 7 Abnormal Sound and Vibration Discriminating method air conditioner status Troubleshooting When turn on or turn off the unit the panel and ome parts will here s the sound of PAPA Normal phenomenon Abnormal sound will expand and there s abnormal disappear after a few minutes sound When turn on or turn off the unit there s abnormal sound due Normal phenomenon Abnormal sound will E ater running sound can be heard e to flow of refrigerant inside air disappear after a few minutes conditioner Foreign objects inside the indoor Remove foreign objects Adjust all parts unit or there re parts touching here s abnormal sound fro indoor unit position of indoor unit tighten screws and stick together inside the indoor unit damping plaster between connected parts Foreign objects inside the outdoo Remove foreign objects Adjust all parts unit or there re parts touching here s abnormal sound fro outdoor unit position of outdoor unit tighten screws and together inside the outdoor unit stick damping plaster between connected parts Short circuit inside the magnetic During heating the way valve has abnormal a S Replace magnetic coil c
43. door unit on the selected location with expansion screws A Note 1 Take sufficient protective measures when installing the outdoor unit 2 Make sure the support can withstand at least four times the unit weight 3 The outdoor unit should be installed at least 3cm above the floor in order to install drain joint As show in Fig 18 4 For the unit with cooling capacity of 2300W 5000W 6 expansion screws are needed for the unit with cooling capacity of 6000W 8000W 8 expansion screws are needed for the unit with cooling capacity of 10000W 16000W 10 expansion screws are needed Chassis Outdoor drain joirt Drain vent At least 3cm above the floor Drain uses Fig 18 Fig 19 2 Install Drain Joint Only for cooling and heating unit 1 Connect the outdoor drain joint into the hole on the chassis 2 Connect the drain hose into the drain vent As show in Fig 19 3 Fix Outdoor Unit 1 Place the outdoor unit on the support 2 Fix the foot holes of outdoor unit with bolts As show in Fig 20 Foot holes Foot holes Fig 20 4 Fix Outdoor Unit 1 Remove the screw cap of valve and aim the pipe joint at the bellmouth of pipe As show in Fig 21 j Liquid pipe Pipe joint A A gas pipe i Union nut gas valve Fig 21 3 Pretightening the union nut with hand 4 Tighten the union nut with torque wrench 48 Service Manual Refer to the following table for wrench moment of forc
44. e Hex nut diameter mm Tightening torque N m es 15 20 09 52 30 40 45 55 60 65 70 75 5 Connect Outdoor Electric Wire 1 Remove the wire clip connect the power connection wire and signal control wire only for cooling and heating unit to the wiring terminal according to the color fix them with screws As show in Fig 22 Handle 23 N 1 black brown yellow green Indoor unit connection Fig 22 2 Fix the power connection wire and signal control wire with wire clip only for cooling and heating unit A Note 1 After tightening the screw pull the power cord slightly to check if it is firm 2 Never cut the power connection wire to prolong or shorten the distance 6 Neaten the Pipes 1 The pipes should be placed along the wall bent reasonably and hidden possibly Min semidiameter of bending the pipe is 10cm 2 If the outdoor unit is higher than the wall hole you must set a U shaped curve in the pipe before pipe goes into the room in order to prevent rain from getting into the room As show in Fig 23 The drain hos can t raise upwards Wall Fig 24 Fig 23 A Note 1 The through wall height of drain hose shouldn t be higher than the outlet pipe hole of indoor unit As show in Fig 24 2 Slant the drain hose slightly downwards The drain hose can t be curved raised and fluctuant etc As
45. e AIR button Press this button again to clear the display Optional for some models HEALTH icon is displayed when pressing the HEALTH button Press this button again to clear the display X FAN icon d i is displayed when pressing the X FAN button Press this button again to clear the display TURBO icon is displayed when pressing theTURBO button Press this button again to clear the display FAN SPEED display Press FAN button to select the desired fan speed setting AUTO Low Med High Your selection will be displayed in the LCD windows except the AUTO fan speed FEEL icon Ab E is displayed when pressing the FEEL button Dress this button again to clear the display 8 C Heatingicon is displayed when Pressing TEMP and CLOCK simulta neously in Heat mode Remote Controller Description ON OFF Press this button to turn on the unit Press this button again to turn off the unit BA Press this button to increase set temperature Holding it down above 2 seconds rapidly increases set temperature In AUTO mode set temperature is not adjustable MODE Each time you press this button a mode is selected in a sequence that goes from AUTO COOL DRY FAN and HEAT as the following AUTO B COOL gt DRY De FAN P HEAT ji Note Only for models with heating function After energization AUTO mode is defaulted In AUTO mode the set temperature will not be displayed on the LCD and the unit will auto
46. e live wire neutral wire and grounding wire of power supply must be corresponding to the live wire neutral wire and grounding wire of the air conditioner 8 The power cord and power connection wires can t be pressed by hard objects 9 If power cord or connection wire is broken it must be replaced by a qualified person 10 If the power cord or connection wire is not long enough please get the specialized power cord or connection wire from the manufacture or distributor Prohibit prolong the wire by yourself 11 For the air conditioner without plug an air switch must be installed in the circuit The air switch should be all pole parting and the contact parting distance should be more than 3mm 12 Make sure all wires and pipes are connected properly and the valves are opened before energizing 13 Check if there is electric leakage on the unit body If yes please eliminate the electric leakage 14 Replace the fuse with a new one of the same specification if it is burnt down don t replace it with a cooper wire or conducting wire 15 If the unit is to be installed in a humid place the circuit breaker must be installed Installation Safety Precautions 1 Select the installation location according to the require ment of this manual See the requirements in installation part 2 Handle unit transportation with care the unit should not be carried by only one person if it is more than 20kg 3 When installing the ind
47. e signal is received set temperature will be displayed When the unit is turned off temperature display will be compulsively set at given temperature by the controller When the unit is turned on patterns as set by remote signals will be displayed If user does not set up temperature display state given temperature will be displayed 2 Failure display of indoor unit 1 Requirements for failure display When multiple failures appear at the same time failure protection codes shall be displayed alternatively Hardware failures shall be displayed immediately refe rring to requirements in Failure State Display Table 2 Operation states shall be displayed immediately referring to requirements in Failure State Display Table Other failures shall be displayed 200s after the compressor stops referring to requirements in Failure State Display Table Note in the case that the unit is switched off with the remote controller or the compressor is switched on again failure display waiting time 200s shall be cleared Frequency limitation and reduction states shall be displayed by means of remote calling 2 Failure display control Indicator failure display shall be kept synchronous with Double 8 failure display that is during indicator blinking failure code corresponding to such indicator shall be displayed on Double 8 3 Method of remote calling of failure display Entering the failure remote calling mode push the light
48. ection Indoor unit motor no feedback Jump wire cap malfunction protection Indoor ambient sensor open circuit short circuit Indoor evaporator sensor ciruit open short circuit Outdoor ambient sensor circuit open circuit short 3s off blink four times Off 3s blink 8 imes Off 3s blinks three times cooling dehumidifying com pressor outdoor fan motor will stop running indoor fan motor works heating all stop running Cooling dehumidifying com pressor outdoor fan motor will stop indoor fan will work heating all will stop Cooling compressor will stop indoor fan motor works Heating all will stop Cooling compressor will stop indoor fan motor works Heating all will stop Whole unit will stop to run Whole unit will stop to run fan motor is runing other overloads will stop Heating whole unit will stop to run fan motor runing other overload will stop Heating whole unit will stop Cooling dehumidifying com pressor will stop indoor fan motor will work Heat all will stop Pls refer to rtouble shoot air exhaust protection overload 1 power supply is stable fluctuation is too much 2 Power supply is too low overload is too much Please refer to troubleshooting Please refer to troubleshooting 1 Poor insert for GPF 2 Indoor control board AP1 malfunction 3 Indoor motor M1 malfunction Indoor control board AP1 jump cap poor connected please reinsert or replace the
49. erature compensation 2 Check effective judgment controls of parameters Effective judgment function of the outdoor exhaust temperature thermo bulb When conditions a and b are satisfied the outdoor exhaust temperature thermo bulb is judged not to be connected into place the mainboard of outer units will display failure of the outdoor exhaust temperature thermo bulb not connected into place stop the machine for repairing and resume the machine by remote controls of ON OFF a Judgment of exhaust detection temperature change After the compressor starts up and runs for 10 minutes if the compressor frequency f gt 40Hz and the rising value Texhaust Texhaust after start up for 10 minutes Texhaust before start up lt 2 C the outdoor exhaust temperature thermo bulb can be judged not to be connected into place judging once when the power is on the first time b Comparative judgment of exhaust detection temperature and condenser detection temperature Tpipe temperature Toutdoor pipe temperature in cooling mode Tpipe temperature Tindoor pipe temperature in heating mode After the compressor starts up and runs for 10 minutes if the compressor frequency f gt 40Hz and Tpipe temperature gt Texhaust 3 the outdoor exhaust temperature thermobulb can be judged not to be connected into place judging once when power is on the first time 2 Basic Functions 1 Cooling Mode 1 Conditions and processes of cooling operation 1
50. essor stop running condition compressors outdoor fan motor will stop to run the upper and lower guide louver will rotate to horizontal position L indoor fan motor run at setting fan speed for 60s then the indoor fan motor will stop to run b Due to PG motor block running the air guide board will keep the position when it stopping under each mode other malfunction unit will stop to run the upper and lower air guide louver will rotate to horizontal position L indoor fan unit will run at setting fan speed and run for 60s indoor fan unit will stop to run 5 Auto mode 1 When Tamb226 select the cooling mode at this time the setting temp is 25 C 77 Fahrenheit scale 2 Cooling and heating units Tambs22 C will run at heating mode at this time the setting temp is 20 68 Fahrenheit scale 3 Cooling only unit When Tambs22 C it will run at Fan mode the setting temp is 25 C 77 Fahrenheit scale 4 When 23 C ST indoor amb 25 C firstly enter into auto mode and run at auto fan speed other modes will run at auto mode will keep the previous running mode When entering into Dehumidifying mode it will run at auto fan speed 6 Auto fan speed controlmode 2 Display state of indoor indicators 1 State of indoor display board 1 When the unit is powered on all patterns will be displayed and then only power indicator is on When the unit is turned on with a remote controller the operating indicator is on and operation mode whi
51. f the machine is shut down at present the information of the locked fault will not be displayed 10 Super Power Function In cooling and heating modes automatic dehumidifying and air supplying modes are without strong power press the button of Super Power the wind speed on the remote controller is displayed as super high air flow and the inner fans are also turned to super high air flow 11 Health Function When the inner fans are running the remote controller is set at the Health function at this time if there is no Health button on the remote controller the Health On order is defaulted then start the Health function device 3 Fault Detection of Thermo bulb 1 Indoor Environment Thermo bulb Detect the fault of thermo bulb at any time 2 Indoor Pipe Temperature Thermo bulb During the defrosting period the fault of the thermo bulb will be not detected which shall be detected in 5 minutes after defrosting is completed the fault of the thermo bulb will be detected at other times 34 0 0 Technical Information Service Manual 3 Protecting Treatments of Thermo bulb 1 When the thermobulb is detected to be short circuited continuously for 30 seconds It is regarded that the temperature detected by the thermo bulb is over high or unlimited then the whole machine will exert corresponding safety stops according to the over high temperature sensed by the thermo bulb and display corresponding temperature safety stops and fau
52. ient 2 Method of test operation e Put through the power press ON OFF button on the remote controller to start operation e Press MODE button to select AUTO COOL DRY FAN and HEAT to check whether the operation is normal or not e f the ambient temperature is lower than 16 C the air conditioner can t start cooling 49 Service Manual 9 Maintenance 9 1 Flashing LED of Indoor Outdoor Unit and Primary Judgement Indicator display LED blinks 0 5s ON 0 5s OFF Name of malfunction Double 8 code display Running LED Heating LED Outdoor unit display LEDs have 3 status oOFF mON 3 Blinks AC status Malfunctions System high pressure protection Anti freezing protection Cooling LED cooling dehumidifying except the indoor fam motor is runnig others will stop to run heating all stop running D42 D43 D40 D5 D41 D6 cooling dehumidifying com pressor outdoor fan motor will stop running indoor fan motor will keep running High pressure of system might be 1 Refrigerant is too much 2 Poor heating exchanging for units including heat exchanger is dirty and unit heating radiating ambient is poor 3 Ambient temp is too high 1 Poor indoor unit air returning 2 Indoor fan motor rotating speed abnormal 3 Evaporator is dirty Compressor air exhaust high temp protection AC overload protection Indoor and outdoor units communication malfunction Anti high temp prot
53. ing cover 2 Fix the wire crossing board on connection wire sleeve at the bottom case let the connection wire sleeve go through the wire crossing hole at the back of indoor unit and then pull it out from the front As show in Fig 12 connection wire sleeve Pa Fig 12 3 Remove the wire clip connect the power connection wiresignal control wire only for cooling and heating unit to the wiring terminal according to the color tighten the screw and then fix the power connection wire with wire clip As show in Fig 13 Cooling and heating unit vi 2 3 E blue Sieg yellow green Connect to outdoor unit Wiring board Wire clip Note The wiring connect is for reference only please refer to the actual one Fig 13 4 Put wiring cover back and then tighten the screw 5 Close the panel A Note 1 All wires of indoor unit and outdoor unit should be connected by a professional 2 If the length of power connection wire is insufficient please contact the supplier for a new one Avoid extending the wire by yourself 3 For the air conditioner with plug the plug should be reachable after finishing installation 4 For the air conditioner without plug an air switch must be installed in the line The air switch should be all pole parting and the contact parting distance should be more than 3mm Installation and Maintenance o 0 8 Bind up Pipe
54. ing the defrosting compressor 4 Evaporator frozen preventing protection function At the mode of Cooling dehumidifying Evaporator frozen preventing protection function is allowed to begin after 6 min of starting the compressor 1 Starting estimation After the compressor stopped working for 180s if Tinner pipe gt Tfrozen preventing frequency limited temperature the temperature of hysteresis is 2 the machine is only allowed to start for operating otherwise it should not be started and should be stopped to treat according to the frozen preventing protection Clear the trouble under the mode of power turn off heating and the protection times are not counted 2 Frequency limited Tfrozen preventing normal speed frequency reducing temperature lt Tinner pipe T frozen preventing frequency limited temperature you should limit the frequency raising of compressor 3 Reducing frequency at normal speed If Tfrozen preventing high speed frequency reducing temperature lt Tinner pipe T frozen preventing normal speed frequency reducing temperature you should adjust the compressor frequency by reducing 8Hz 90s till the lower limit 4 Reducing frequency at high speed If Tfrozen preventing power turn off temperature ST inner pipe Tfrozen preventing high speed frequency reducing temperature you should adjust the compressor frequency by reducing 30Hz 90s till the lower limit 5 Power turn off If the Tinner pipe lt Tfrozen p
55. ion indicator of outdoor unit L D Ds pie D30 ae ee ae ae Main check points els there any damage for the communication circuit of indoor mainboard Is communication circuit of outdoor mainboard AP1 damaged eDetect the indoor and outdoor connection wire and indoor and outdoor inside wiring is connected well or not if there is any damage Fault diagnosis process id the equipment operate normally before the failure Y occurs Check if the controller connection wire inside the electric box of indoor and Y Check the wiring of the indoor and outdoor units according to the wiring diagram Is the connection right outdoor unit is loose iN the connection wire inside electric box is normal Correctly connect the wires for the indoor and outdoor units according to the wiring diagram If the fault is eliminated Y y Check the communication circuit of the outdoor unit Replace the mainboard Y AP1 of outdoor unit The communication circuit is abnormal N If the fault is eliminated y Replace the mainboard of indoor unit y End N y Correctly connect the corresponding wires for the indoor and outdoor units according to the wiring diagram If the fault is eliminated Installation and Maintenance 61 Detection process of outd
56. ipe T Cooling overload frequency reducing temperature at normal speed you should limit the frequency raising of compressor 3 Reducing frequency at normal speed and power turn off If TCooling overload frequency reducing temperature at high speed ST outer pipe lt T Cooling overload power turn off temperature you should adjust the compressor frequency by reducing 8Hz 90s till the lower limit After it was running 90s at the lower limit if TCooling overload frequency reducing temperature at normal speed ST outer pipe then Cooling overload protects machine stopping Technical Information o 37 Service Manual 4 Reducing frequency at high speed and stop machine If T Cooling overload frequency reducing temperature at high speed lt T outer pipe T Cooling overload power turn off temperature you should adjust the compressor frequency by reducing 30Hz 90s till the lower limit After it was running 90s at the lower limit if TCooling overload frequency reducing temperature at normal speed lt T outer pipe then Cooling overload protects machine stopping 5 Power turn off If the Tooling overload power turn off temperature ST outer pipe then Cooling overload protects machine stopping If Touter pipe lt T Cooling overload frequency limited temperatureland the compressor has been stopped working for 3 minutes the machine should be allowed to operate 6 If the Cooling overload protection power turn off continuously occurs
57. jump cap Cooling dehumidifying indoor 1 Room temp sensor is not connected with the control panel AP1 2 Room temp sensor is damaged Cooling dehumidifying indoor 1 Tube temp sensor is not connected with the conrtol panel AP1 2 Tube tmep sensor is damaged Outdoorroom temp sensor hasn t connected well or damaged please refer to the sensor resistance value for checking Outdoor condemsor sensor open circuit short circuit Malfunction of zero cross derection and blink 17 times Off 3s blinks 4 times Cooling dehumidifying com pressor will stop indoor fan motor will work Heat all will stop The complete unit stops Outdoorroom temp sensor hasn t connected well or damaged please refer to the sensor resistance value for checking 1 Power supply is abnormal 2 Detection circuit of indoor control mainboard is labnormal Installation and Maintenance Service Manual Outdoor air exhaust 14 sensor open circuit short circuit Overload limit 15 descending frequency Off 3s blinks 5 times Off 3s blinks 6 times Cooling dehumidifying after runing for 3mins later the compressor will stop to run indoor fan motor will start to run heating after run 3 mins later all will stop to run Overload mormal operation compressor is runing frequency descending 1 Exhaust temp sensor hasn t connected well or damaged plwease refer to the sensor resistance value for checking 2 Se
58. kage detector 2 With soap water If leakage detector is not available please use soap water for leakage detection Apply soap water at the suspected position and keep the soap water for more than 3min If there are air bubbles coming out of this position there s a leakage Installation and Maintenance o 8 8 Check after Installation and Test operation 1 Check after Installation Check according to the following requirement after finishing installation The unit may drop shake or installed firmly emit noise It may cause insufficient cooling refrigerant leakage test heating capacity pipeline sufficient water dripping water dripping Is the voltage of power S according to the lt may cause malfunction or voltage marked on the damage the parts nameplate Is electric wiring and pipeline installed correctly securely tow te eect samage pt aoo follow the specification damage the parts ORAR in air inlet and air outlet heating The dust and sundries caused lt may cause malfunction or during installation are damaging the parts removed The gas valve and liquid valve of connection pipe are open completely lt may cause malfunction or damage the parts 10 lt may cause insufficient cooling heating capacity 2 Test operation 1 Preparation of test operation e The client approves the air conditioner installation e Specify the important notes for air conditioner to the cl
59. lf it is unavoidable please add fence for safety purpose Installation and Maintenance o 0 8 4 Requirements Forelectric Connection 1 Safety precaution 1 Must follow the electric safety regulations when installing the unit 2 According to the local safety regulations use qualified power supply circuit and air switch 3 Make sure the power supply matches with the requirement of air conditioner Unstable power supply or incorrect wiring may result in electric shock fire hazard or malfunction Please install proper power supply cables before using the air conditioner Air conditioner 18K 24K Air switch capacity 25A 4 Properly connect the live wire neutral wire and grounding wire of power socket 5 Be sure to cut off the power supply before proceeding any work related to electricity and safety 6 Do not put through the power before finishing installation 7 For appliances with type Y attachment the instructions shall contain the substance of thefollowing f the supply cord is damaged H must be replaced by the manufacturer its service agent or similarly qualified persons in order to avoid a hazard 8 The temperature of refrigerant circuit will be high please keep the interconnection cable away from the copper tube 2 Grounding requirement 1 The air conditioner is first class electric appliance It must be properly grounding with specialized grounding device by a professional Please make sure it is a
60. ls the input voltage too low Fault diagnosis process Out of step occurs once the unit is powered on Is stop time of the compressor longer than 3 minutes Are the wires for the compressor connected correctly Is the connection made in clockwise direction N Connect the Y wires correctly y Replace the control panel AP1 aY If the fault is eliminated N j Replace the compressor C End Installation and Maintenance o OW Out of step occurs in operation TT Za o A P A Ser Check if the fan terminal Is the cutdoor fan working eN OFAN is connected correctl normally ___ y TT ARA Y Improve the heat dissipation Y of the unit eg clean heat exchanger improve ventilation etc s heat dissipation of the unit Start the unit after input volatge is normal s the input vo abnormal ee _ Is the Charge refrigerant accordin lt charge volume of refrigerant Y a too much 7 to the service manual N Replace the control panel AP1 If the fault is eliminated N Y Replace the compressor N gt Replace the fan capacitor C1 Y Replace the outdoor fan C n Ne d MA 59 Service Manual 6 Overload and air exhaust malfunction diagnosis Fault with outdoor unit Malfunction indicator of outdoor unit
61. lts of the thermo bulb simultaneously 2 When the thermo bulb is detected in open circuit continuously for 30 seconds stop the machine in protection directly display corresponding faults of the thermo bulb 4 Forced Running Function of the Indoor Units 1 Enter into Forced Running Control Within 5 minutes after power up press the Lights Off button on the remote controller continuously for three times within 3 seconds to enter into the fluorine collecting mode and display Fo send the fluorine collecting mode for 25 minutes continuously each load will be treated as cooling when starting the machine set the air flow as High set the temperature as 16 C 2 Exit from the Forced Running Control After receiving any remote signal or signal of keys the fluorine collecting mode will exit and operate in accordance with the current orders set or exit the fluorine collecting mode after running for 25 minutes and the machine will be shut down automatically Outdoor Units 1 Input Parameter Compensation and Calibration 1 Check the ambient temperature compensation function Indoor ambient temperature compensation function a In cooling mode the indoor ambient temperature participating in computing control Tindoor ambient temperature _4 Tcooling indoor ambient temperature compensation b In heating mode the indoor ambient temperature participating in computing control Tindoor ambient temperature 4 Theating indoor ambient temp
62. lways grounded effectively otherwise it may cause electric shock 2 The yellow green wire in air conditioner is grounding wire which can t be used for other purposes 3 The grounding resistance should comply with national electric safety regulations 4 The appliance must be positioned so that the plug is accessible 5 An all pole disconnection switch having a contact separation of at least 3mm in all poles should be connected in fixed wiring 6 Including an air switch with suitable capacity please note the following table Air switch should be included magnet buckle and heating buckle function it can protect the circuit short and overload Caution please do not use the fuse only for protect the circuit 8 5 Installation of Indoor Unit 1 Choosing Installation location Recommend the installation location to the client and then confirm it with the client 2 Install Wall mounting Frame 1 Hang the wall mounting frame on the wall adjust it in horizontal position with the level meter and then point out the screw fixing holes on the wall 2 Drill the screw fixing holes on the wall with impact drill the specification of drill head should be the same as the plastic expansion particle and then fill the plastic expansion particles 45 Service Manual in the holes 3 Fix the wall mounting frame on the wall with tapping screws ST4 2X25TA and then check if the frame is firmly installed by pulling the frame
63. matically select the suitable operation mode in accordance with the room temperature to make indoor room comfortable SWING Press this button to set up amp down swing angle which circularly changes as below A gt E NES ERT A SS Jl 1 1 a ERE b gie This remote controller is universal If any command or sl is sent out the unit will carry out the command as zl gt I indicates the guide louver swings as l gt I gt gt l gt l Hv Press this button to decrease set temperature Holding it down above 2 seconds rapidly decreases set temperature In AUTO mode set temperature is not adjustable B FAN This button is used for setting Fan Speed in the sequence that goes from AUTO a af to ail then back to Auto AAA al wal _aLowspeed _a Medium speed ua ff High speed Technical Information o 29 Service Manual TIMER OFF Press this button to initiate the auto off timer To cancel the auto timer program simply press the button again TIMER OFF setting is the same as TIMER ON B clock Press CLOCK button D blinking Within 5 seconds pressing or button adjusts the present time Holding down either button above 2 seconds increases or decreases the time by 1 minute every 0 5 second and then by 10 minutes every 0 5 second During blinking after setting press CLOCK button again to confirm the setting and then as will be constantly displayed Timer on Press this button to ini
64. model e Indoor Unit 18K 24K l TUBE ROOM RECEIVER AND Bu NH POWER TEMP SENSOR TEMP SENSOR DISPLAY BOARD N BN BK af a VEEN GN L RT2 RTI 7 A tt H TERMINAL 5 BLOCK TUBE ROOM DISP1 DISP2 ni py L 7 BU lo gt BK BK Ig CAP COM OUT H a 2 12 E AP MAIN BOARD q 3 LS JUMP aaa YEGN S wii ft our BN K7 K1 YEGN XT SWING UD PGF PG 7 Y E HEALTH L HEALTH N PEDO Y EVAPORATOR A mn Ta ue MI ou PLASMA TM GENERATOR MOTOR MOTOR OPTIONAL AAA SEAS Technical Information O 18 e Outdoor Unit 18K Service Manual 24K I i Please don t touch any wo o nm LA SAT H an ON Mun electronic component or Pa La 20 S U Gon PE YEGN terminal when the machine is Sa Si so MAGNETIC i
65. nder Battery e During operation point the remote control signal sender at the receiving window on indoor unit e The distance between signal sender and receiving window should be no more than 8m and there should be no obstacles between them e Signal may be interfered easily in the room where there is fluorescent lamp or wireless telephone remote controller should be close to indoor unit during operation Cover of e Replace new batteries of the same model when replacement is required pattery box Remove e When you don t use remote controller for a long time please take out the batteries e f the display on remote controller is fuzzy or there s no display please replace batteries Emergency Operation Panel If remote controller is lost or damaged please use auxiliary button to turn on or turn off the air conditioner The operation in details are as below As shown in the fig Open panel press aux button to turn on or turn off the air conditioner When the air conditioner is turned on it will operate under auto mode _ Emergency operation switch Technical Information o 27 Service Manual YV1F7 ON OFF Press it to start or stop operation A Press it to increase temperature setting MODE Press it to select operation mode AUTO COOL DRY FAN HEAT SWING Press it set swing angle Y Press it to decrease temperature setting El FAN Press it to set fan speed TIMER OFF Press it to set auto off
66. ner Turbo mode a AE Set time we O DOD0 ME CIOCK AAPP E E es z S ES TIMER ON TIMER OFF Sleep mode OL Ee Child lock __ Temp display type eee Con e 7 A Light A Settemp Indoor ambient temp A Outdoor ambient temp nn ni bet 2 Introduction for Buttons on Remote Controller Note After putting through the power the air conditioner will give out a sound Operation indictor d is ON red indicator After that you can operate the air conditioner by using remote controller 1 ON OFF Button Press this button can turn on or turn off the air conditioner After turning on the air conditioner operation indicator d on indoor unit s display is ON green indicator The colour is different for different models and indoor unit will give out a sound 2 MODE Button Press this button to select your required operation mode AUTO COOL DRY FAN HEAT gt E H gt 24 Technical Information Service Manual e When selecting auto mode air conditioner will operate automatically according to exfactory setting Set temperature can t be adjusted and will not be displayed as well Press FAN button can adjust fan speed Press 31 button can adjust fan blowing angle e When selecting cool mode air conditioner will operate under cool mode Cool indicator SE on indoor unit is ON Press or button to adjust set temperature Press FAN button to adjus
67. nsor head hasn t insert into the copper tube Please refer to troubleshooting Over current 16 need frequency descending Off 3s blinks 8 times Off 3s blinks 9 times Overload mormal operation compressor is runing frequency descending Overload mormal operation compressor is runing frequency descending 1 Input power supply is too low 2 System voltage is too high over is too much 1 Overload is too much ambient temp is too high 2 Refrigerant is short 3 Electric expansion malfunction Air exhaust 17 over high need frequency descending 18 DC generatrix voltage is too high Complete unit current detection malfunction Compressor current overcurrent protection Off 3s blink 11 times Off 3s and blink 13 times Off 3s blink 15 times Off 3s and blink once during blinking ON 10s and Off 05s Cooling dehumidifying co mpressor stop running Fan motor works Heating all will stop Cooling dehumidifying compressor stops running indoor fan motor works Heating all will stop running Cooling dehumidifying compressor stops running indoor fan motor works Heating all will stop running Defrosting will occur in heating mode Compressor will operate while indoor fan will stop 1 Testing wire terminal L and N position f higher than 265VAC please cut off the power supply and restart until back to normal 2 If input voltage is normal testing the voltage of elect
68. nstallation and Maintenance Safety Precautions Important Please read the safety precautions carefully before installation and maintenance The following contents are very important for installation and maintenance Please follow the instructions below eThe installation or maintenance must accord with the instructions eComply with all national electrical codes and local electrical codes ePay attention to the warnings and cautions in this manual eAll installation and maintenance shall be performed by distributor or qualified person eAll electric work must be performed by a licensed technician according to local regulations and the instructions given in this manual eBe caution during installation and maintenance Prohibit incorrect operation to prevent electric shock casualty and other accidents A N Warnings Electrical Safety Precautions 1 Cut off the power supply of air conditioner before checking and maintenance 2 The air condition must apply specialized circuit and prohibit share the same circuit with other appliances 3 The air conditioner should be installed in suitable location and ensure the power plug is touchable 4 Make sure each wiring terminal is connected firmly during installation and maintenance 5 Have the unit adequately grounded The grounding wire can t be used for other purposes 6 Must apply protective accessories such as protective boards cable cross loop and wire clip 7 Th
69. ntrol Logic 1 Compressor Control Start the compressor after starting cooling heating dehumidifying operations and the outer fans start for 5s When the machine is shutdown in safety stops and when switching to air supplying mode the compressor will stop immediately In all modes once the compressor starts up it will not be allowed to stop until having run for the tmin compressor running time Note including cases of shutdown when the temperature point is reached except the cases requiring stopping the compressor such as fault protection remote shutdown mode switching etc In all modes once the compressor stops it will be allowed be restart after 3 minute delay Note The indoor units have a function of power memory the machine can be restarted after remote shutdown and powering up again without delay 1 Cooling mode Start the machine to enter into cooling operation for cooling the compressor is switched on 2 Dehumidifying mode Same as the cooling mode 3 Air supplying mode The compressor is switched off 4 Heating mode 1 Start the machine to enter into heating operation for heating the compressor is switched on 2 Defrosting a Defrosting starts the compressor is shut down and restarts it after 55 second delay b Defrosting ends the compressor stops then starts it after 55 second delay 2 Outer Fans Control Notes Only the outer fans run for at least 80s in each air flow speed can the air flow be swi
70. of Re energize and reactor Lis normal turn on the unit If the fault is eliminated Replace the control panel AP1 N Installation and Maintenance Service Manual 2 IPM Protection Out of step Fault Compressor Phase Overcurrent Fault with outdoor unit Malfunction indicator of outdoor unit Malfunction D5 D6 D16 D30 IMP protection Ww E Out of step fault x LC Did Compressor overcurrent X Main check points els the connection between control panel AP1 and compressor COMP secure Loose Is the connection in correct order els the voltage input of the machine within normal range Use AC voltmeter to measure the voltage between terminal L and N on the wiring board XT els the compressor coil resistance normal Is the insulation of compressor coil against the copper tube in good condition els the working load of the machine too high Is the radiation good els the charge volume of refrigerant correct Fault diagnosis process Energize and switch on Use AC voltmeter to measure the voltage between terminal L and N on the wiring board XT Check the supply voltage and restore it to 210VAC 250VAC f the voltage between terminal L and N on wiring board XT is within 210VAC 250VAG IPM protection occurs after the machine has run for a period of time
71. oil electromagnetic sound SC Abnormal shake of compressor Outdoor unit gives out abnormal sound Adjust the support A ighten the bolts If add too much refrigerant during maintenance Abnormal sound inside the compressor please reduce refrigerant properly Replace compressor for other circumstances Abnormal sound inside the 64 Oo o Installation and Maintenance Appendix Appendix 1 Reference Sheet of Celsius and Fahrenheit Conversion formula for Fahrenheit degree and Celsius degree Tf Tcx1 8 32 Set temperature Fahrenheit Fahrenheit display Fahrenheit a display Fahrenheit gt temperature CE Celsius C temperature CF Celsius C CF CF 60 8 62 6 64 4 66 2 0 68 2 Ambient temperature Fahrenheit Fahrenheit display Fahrenheit al ver display Fahrenheit 5 temperature CF Celsius CC temperature CF EE CF CF 32 0 55 56 55 4 13 33 8 57 58 57 2 14 35 6 59 60 59 15 37 4 61 62 60 8 16 392 4 62 6 17 41 64 65 64 4 18 428 6 66 67 66 2 19 44 6 68 69 68 20 464 8 70 71 69 8 21 48 2 71 6 22 50 10 73174 73 4 23 51 8 11 75 76 75 2 24 53 6 77 78 77 25 Appendix 2 Configuration of Connection Pipe 96 1 Standard length of connection pipe e 5m 7 5m 8m 2 Min length of connection pipe is 3m 3 Max length of connection pipe and max high difference 9000 Btu h 2637 W 10 m 4 The additional refrigerant oil and refrigerant charging required after 12000 Btu h 3516 W
72. oor communication circuit refer to the outdoor key detection points Test the voltage of Test 10 The value is changing Test the voltage of Test 13 The value is changing Fault of outdoor unit Test the voltage of Test 11 The value is changing Test the voltage of Test 12 The value is changing Outdoor End communication circuit is normal 62 Service Manual Installation and Maintenance Service Manual 9 3 Maintenance Method for Normal Malfunction 1 Air Conditioner Can t be Started up Possible Causes Discriminating Method Air conditioner Status Troubleshooting Confirm whether it s due to power failure If yes No power supply or poorfAfter energization operation indicator isn t bright wait for power recovery If not check power connection for power plug and the buzzer can t give out sound supply circuit and make sure the power plug is connected well rong wire connection between indoor unit and outdoor unit Under normal power supply circumstances or poor connection for wiringjoperation indicator isn t bright after energization erminals Check the circuit according to circuit diagram land connect wires correctly Make sure all iring terminals are connected firmly Make sure the air conditioner is grounded reliably Make sure wires of air conditioner is connected correctly Check the wiring inside air conditioner Check hether the in
73. oor unit and outdoor unit a suffi cient fixing bolt must be installed make sure the installation support is firm 4 Ware safety belt if the height of working is above 2m 5 Use equipped components or appointed components dur ing installation 6 Make sure no foreign objects are left in the unit after fin ishing installation Refrigerant Safety Precautions 1 Avoid contact between refrigerant and fire as it generates poisonous gas Prohibit prolong the connection pipe by welding 2 Apply specified refrigerant only Never have it mixed with any other refrigerant Never have air remain in the refrigerant line as it may lead to rupture or other hazards 3 Make sure no refrigerant gas is leaking out when installation is completed 4 If there is refrigerant leakage please take sufficient measure to minimize the density of refrigerant 5 Never touch the refrigerant piping or compressor without wearing glove to avoid scald or frostbite Improper installation may lead to fire hazard explosion electric shock or injury 41 42 Service Manual Main Tools for Installation and Maintenance 1 Level meter measuring tape 2 Screw driver 4 Electroprobe 7 Electronic leakage detector 8 Vacuum pump 10 Pipe pliers pipe cutter 11 Pipe expander pipe bender Ce 3 Impact drill drill head electric drill 6 Torque wrench open end wrench inner hexagon spanner 9 Pressure meter 12 Soldering applian
74. orks protection Heating outdoor fan motor compressor indoor fan motor stop running t D f ork 5 gt VI d e Gi Ae a e MES BA el qe pomii E a er e sek d EE o Installation and Maintenance eee 53 54 Service Manual ec point Test point Related elements Test value under normal condition Test 1 Between Aand C Neutral wire live wire 160V 265V Test 2 Between B and C Neutral wire live wire 160V 265V Test 3 Between D and E Electrolytic capacitor of DC bas bar DC 180V 380V Test 4 Between F and G Electrolytic capacitor of switch power DC 180V 380V Test 5 Both ends of diode 510 IPM module 15V DC 14 5V 15 6V Test 6 oe C40 12V power DC 12V 13V Both ends of electrolytic Test 7 capacitor C82 C82 5V power DC 5V Both ends of electrolytic Test 8 capacitor C225 C225 3 3V power DC 3 3V Test 9 Between S and T Communication circular current DC 56V Between point N and R78 to N terminal ground signal receiving A Test 10 GND terminal of outdoor unit Jumping between OV and 3 3V Test 11 U12 Between 1 and 2 at leading foot of U12 Jumping between OV and 3 3V Test 12 Between point M and R75 to M terminal signal sending terminal of Jumping between OV and 3 3V GND outdoor unit Test 13 U15 Between 3 and 4 at leading foot of U15 Jumping between OV and 3 3V eDischarging method 1 remove the inverter cover Outdoor Unit Inverter cover
75. ou can see indoor set temperature indoor ambient temperature or outdoor ambient temperature on indoor unit s display The setting on remote controlleris selected circularly as below Chia 2 When selecting or no display with remote controller temperature indicator on indoor unit displays set temperature When selecting 717 with remote controller temperature indicator on indoor unit displays indoor ambient temperature When selecting 3 with remote controller temperature indicator on indoor unit displays outdoor ambient temperature Note e Outdoor temperature display is not available for some models At that time indoor unit receives signal while it displays indoor set temperature e It s defaulted to display set temperature when turning on the unit There is no display in the remote controller e Only for the models whose indoor unit has dual 8 display 10 TURBO Button Under COOL or HEAT mode press this button to turn to quick COOL or quick HEAT mode icon is displayed on remote controller Press this button again to exit turbo function and icon will disappear 11 SLEEP Button Under COOL HEAT mode press this button to start up sleep function icon is displayed on remote controller Press this button again to cancel sleep function and E icon will disappear 12 LIGHT Button Press this button to turn off display light on indoor unit X icon on remote controller disappears Press
76. place corresponding tube temp sensor board in heating mode D Installation and Maintenance o OW 57 58 4 Start up failure Fault with outdoor unit Malfunction indicator of outdoor unit D5 be Di6 D30 A E A EE Main check points eWhether the compressor wiring is connected correctly els compressor broken els time for compressor stopping enough els the charge volume of refrigerant too much Fault diagnosis process Power on the unit N Restart it up after 3 minutes Is stop time of the compressor longer Are the wires for the compressor UVW connected correctly Is connection sequence right Connect the wires between control N panel AP1 and compressor as per the wiring diagram Does the unit start up normally Is the charge volume of refrigerant too much Y y Charge refrigerant accordin to the service manual Does the unit start Service Manual up normally N y Replace the control panel AP1 If the fault is eliminated Replace the compressor Installation and Maintenance Service Manual 5 Out of step diagnosis for the compressor Fault with outdoor unit Malfunction indicator of outdoor unit D5 De Die oO LS m D30 Main check points els the system pressure too high e
77. please refer to the one supplied with the unit amp gt Technical Information Service Manual 5 2 PCB Printed Diagram Indoor Unit e Top view 6 7 8 9 10 11 No Name 5 aos FE J TS poy Interface of health function neutral C52 S Ee L51 e 4 Bee e EN Power supply interface of outdoor N a wss me Zi live wire e IR LL A 3 interface of live wire 3 FUSES An K6 E fs A en K5 TUT Oer LELLI Neutral wire a ee H E d 5 Fuse RCI 7 ES n 2 ee Cg d Ee 8 6 Interface of PG motor N T t K Eeo F Lan Te d 7 Interface of health function live wire y L COM 0U EH Er
78. ply Phases Power Supply Mode Cooling Capacity Heating Capacity Cooling Power Input Heating Power Input Cooling Power Current Heating Power Current m ml Model of indoor unit mm SH H M L SL r min SH H M L SL r min Fan Type DXL gt OIM D 8 S 5 ajg D 3 5 a el 5 lt 5 gt 5 3 z a o ag T o ca C 3 OD 5 oO Q a iar Ti T v o 31 5 SIS ojo a oo S TIO ojo Oo 3 5 Q Q E jo D D D aja Fan Motor RLA mm E mm a al En Con mm Goen mn kg Indoor Pipe Diameter mi Ti g d O 3 2 5 5 3 E 1S O E T mn O fed o ES 3 3 E z 3 Q 2 2 S 2 O Q D gt Q en d 5 Fuse Ol SIS KSE co ols 0 ole S els zie oe 9 Wa je lt a D x D Ku n lt 0 r lt o W SH H M L SL d ound Power Level SH H M L SL Dimension WXHXD o w SI 3 9 Sch D O 5 CO 9 O Di s O W o bad U 3 D D o 5 o Q 0 Di O o D Q D Net Weight ze Q Y O n Ko Q a 3 Technical Information o Service Manual Model of Outdoor Unit aa YEHJYHO18BAMTA X aa Compressor Manufacturer ZHUHAI LANDA COMPRESSOR Trademark CO LTD Compressor Model QXA B1412F030A Compressor Oil 68EP Compressor Type Rotar L R A Compressor RLA 7 2 Compressor Power Input 1440 1NT11L 6233 or KSD115 C or HPC115 95U1 Throttling Method PY Capill
79. quency devices such as welding machine medical equipment 3 The place near coast area 4 The place with oil or fumes in the air in the air 5 The place with sulfureted gas 6 Other places with special circumstances 2 Indoor Unit 1 There should be no obstruction near air inlet and air outlet 2 Select a location where the condensation water can be dispersed easily and won t affect other people 3 Select a location which is convenient to connect the outdoor unit and near the power socket 4 Select a location which is out of reach for children 5 The location should be able to withstand the weight of indoor unit and won t increase noise and vibration 6 The height of indoor unit should be between 230 260cm from the floor in order to provide sufficient space for maintenance 7 Don t install the indoor unit right above the electric appliance 8 The appliance shall not be installed in the laundry 3 Outdoor unit 1 Select a location where the noise and outflow air emitted by the outdoor unit will not affect neighborhood 2 The location should be well ventilated and dry in which the outdoor unit won t be exposed directly to sunlight or strong wind 3 The location should be able to withstand the weight of outdoor unit 4 Make sure that the installation follows the requirement of installation dimension diagram 5 Select a location which is out of reach for children and far away from animals or plants
80. r Low Voltage Protection for DC Bus If it found the DC bus voltage Upe lt Upe wantuochun Protection turn off PFC and stop the compressor at once and it shall show the DC over low voltage and it should clear out the failure when the voltage raised to Upc gt Upc wantuochun Recovery and the compressor stopped for 3 min Technical Information o 39 Service Manual 3 To detect voltage abnormity protect for DC bus when getting electricity If it found the DC bus voltage Upc gt Upc over tigh voltage turn off the relay at once and shows voltage abnormity failure for DC Bus And the failure can t recover except to break off and get the electricity 15 Abnormity Protection for Four way Valve Under the model of heating operation in good condition the compressor is detected T nner tube lt T inner Ring T Abnormity Temperature Difference For Four Way Valve Reversion during the running it should be regarded as four way valve reversion abnormity And then it can run if stop the reversion abnormity protection for four way valve 3 min and if it still can t run when the reversion abnormity protection for four way valve happens to stop working for 3 times in succession it is available if presses ON OFF Attention the protection shall be shielded during the testing mode and defrosting process and it shall be cleared out the failure and its times immediately when turning off or delivering wind cooling dehumidifying mode conversed
81. r Sensor Protection 1 When the short circuit of sensor is detected within 30s It is regarded as the temperature of sensor over high or infinitely high and now according to the over high sensor the machine should carry out the corresponding protection to stop working and show the corresponding temperature shutdown protection and sensor failure at the same time for example the compressor stops immediately when the outdoor tube sensor short circuit and the machine shall show the overload protection and outdoor tube sensor failure 2 When the open circuit of sensor is detected within 30s The protection shall be stopped and it shall show the corresponding sensor failure 6 Electric Heating Function of Chassis 1 When Toutdoor amb lt 0 the electric heating of chassis will operate 2 When Toutdoor amb gt 2 the electric heating of chassis will stop operation 3 When 0 lt Toutdoor amb lt 2 the electric heating of chassis will keep original status 7 Electric Heating Function of Compressor 1 When Toutdoor amb lt lt 5 compressor stops operation while the electric heating of compressor starts operation 2 When Toutdoor amb gt 2 the electric heating of compressor stops operation 3 When 5 lt Toutdoor amb lt 2 the electric heating of compressor will keep original status 40 0 09 Technical Information Installation and Maintenance Service Manual Part Il Installation and Maintenance 7 Notes for I
82. r supply Terminal of electronic expansion valve Tem wire with IDU PFC induction wire H bm IL cl ON t guy HR Ug u re i Ka o es 3 E PARE re Eo ERE y or PA E den LI N E nnnn nannan uuuu uu uu LLL D ES Se oa mm E 1 f t Ln gl FA O Oka y i 8 1 ORD i EE gk Technical Information O Service Manual 6 Function and Control 6 1 Remote Controller Introduction YB1FA XFAN Buttons on Remote Controller gt OS FAN Ze OPER OO S OL e 88882 Qs Sa 4 D e e RS ON OFF CLOCK Haw pavo TEMP 5 o LIGHT 46000 69 O Introduction for Icons on Display Screen GO ON OFF Button O MODE Button Button FAN Button 31 Button CLOCK Button TIMER ON TIMER OFF Button X FAN Button TEMP Button TURBO Button D LIGHT Button P SLEEP Button Set fan speed d Auto mode Jees y FAN Ze A amp Send signal Cool mode d ao A ee a ennen X fan mode Dry mode RRE a E g I F Fan mode asen X dy CU besen Set temperature l Heat mode size ON a a C NA VT Le ee
83. restart it after 20s if the fault doesn t shows and if they are all failing for the successive start 3 times it shall be reported as Starting up Failure and then restart up it after 3 min When it still not be able to operate through carry out the above process for 5 times it is available if press ON OFF And the compressor should be cleared the times after it run 2 min 13 Out of Step Protection for Compressor The out of step protection signal should be detected immediately after starting up compressor and once find the out of step protection signal the out of step protection shall be stopped if it can run for lasting power turn off 3 min the machine shall be allowed to operate If it still can t run automatically when the out of step protection for compressor happens to stop working for 6 times in succession it needs to press ON OFF to operate And if the running time is more than 10 min the power turn off times for out of step protection shall be cleared and recounted 14 Voltage Abnormity Protection for DC Bus To detect voltage abnormity protection for dc bus after completing the pre charge 1 Over High Voltage Protection for DC Bus If it found the DCbus voltage Upe gt UDC jiekuangchun Protection turn off PFC and stop the compressor at once and it shall show the DC over high voltage failure it should clear out the failure when the voltage dropped to Upe lt UDC Jiekuangchun Recovery and the compressor stopped for 3 min 2 Ove
84. reventing power turn off temperature then frozen preventing protect to stop the machine If T frozen preventing frequency limited temperature lt Tinner pipe and the compressor has stopped working for 3 minutes the whole machine should be allowed to operate 6 If the frozen preventing protection power turn off continuously occurs for six times it should not be resumed automatically and you should press the ON OFF button to resume if the fault keeps on During the process of running if the running time of compressor exceeds the t evaporator frozen preventing protection times zero clearing time the times of frozen preventing power turn off should be cleared to recount The mode of stopping the machine or transferring to supply air will clear the trouble times immediately if the trouble can not be resumed mode transferring will not clear it 5 Overload protection function Overload protection function at the mode of Cooling and dehumidifying 1 Starting estimation After the compressor stopped working for 180s if Touter pipe lt T Cooling overload frequency limited temperature the temperature of hysteresis is 2 C the machine is allowed to start otherwise it should not be started and should be stopped to treat according to the overload protection Clear the trouble at the mode of power turn off heating and the protection times are not counted 2 Frequency limited lf T Cooling overload frequency limited temperature lt Touter p
85. rolytic capacitor on AP1 after turn on the unit There may be some problem and replace the AP1 if the electrolytic capacitor voltage range at 200 280V The circuit on AP1 has malfunction replace the outdoor unit AP1 Please refer to troubleshooting IPM protection compressor lose steps compressor current overcurrent protection It s the normal state 21 Defrosting Compressor 22 overload protection Installation and Maintenance Cooling dehumidifying compressor stops running indoor fan motor works Heating all will stop running Cooling dehumidifying compressor stops running indoor fan motor works Heating all will stop running 1 Wire terminal OVCCOMP loosen or circuit has problem the resistance of SAT should be lower than 1 ohm 2 Please refer to troubleshooting exhaust overload protection Pls refer to troubleshooting 51 PFC protection Compressor lose steps Heating anti high temp declines Startsup fail Off 3s blink 6 times Off 3s blink 7 times Off 3s blink 10 times Off 3s blink 11 times Cooling dehumidifying compressor stops running indoor fan motor works Heating all will stop running Cooling dehumidifying compressor stops running indoor fan motor works Heating all will stop running Overload normal works compressor running frequency declines Cooling dehumidifying compressor stops running indoor fan motor works Heating all will
86. running stopping or has Se RING been powered off for less PES 1 AJ AJ d than 30 minutes to prevent E GI Bis DIN L2 L2 E l l the risk of electric shock BU YE RD o A WH BK BU YE RD A A COMP U COMP V CONP W l TERMINAL T SENSOR OVC COMP E BLOCK L1 Mara ia Tv zc EK COM INNER AP1 Ss BN JE BN S AC L i A vm MAGNETIC Ew RING AV FA OFAN Ev a PE ES y INDC1 INDC2 l i WH 06 YEGN S VW A Ps wl ES M1 PE SE Electronic a D L D Im expansion EES l PE ae valve FAN MOTOR YEGN REACTOR l i VALVE OPTIONAL pe i E MN ENEE ES l A WARN I NG e e e OVERLOAD PROTECTOR I Please don t touch any 2 2 2 o mm l electronic component or Ea 3 Sa BA terminal when the machine is Pa Ex Ze Um YEN running stopping or has 3E SE e VIA MI l l been powered off for less MAGNETIC E d than 30 minutes to prevent RTI RT Tu WH WH ping s L2 L2 L2 the risk of electric shock ai ai 2 BU YE RD Ex l i WH BK BU YE RD I A A S d scum METIO A A CONP U mi COIP i l BLOCK ih T SENSOR OVC COMP I Ul l El H j A BK l 2 R i COM INNER API x BN tt BN l o 3r gt AC L l i 3 vm EN 4V FA OFAN l a PE Y Go Y wm wel I PE l a H l l VT VT Nn YEGN Dt MOV PE wal L o ms Electronic Se e i 5 ayy expansion _ REACTOR i PE any valve FAN MOTOR YEGN i VALVE OPTIONAL PE i These circuit diagrams are subject to change without notice
87. show in Fig 25 W Oo 9 Installation and Maintenance Service Manual 3 The water outlet can t be placed in water in order to drain smoothly As show in Fig 26 Y Xx The drain hose can t be fluctuant The water outlet x The drain hose x Sien placed sf can t be fluctuant The water GS outlet can t be ij wl Bia Fig 26 Fig 25 8 7 Vacuum Pumping and Leak Detection 1 Use Vacuum Pump 1 Remove the valve caps on the liquid valve and gas valve and the nut of refrigerant charging vent 2 Connect the charging hose of piezometer to the refrigerant charging vent of gas valve and then connect the other charging hose to the vacuum pump 3 Open the piezometer completely and operate for 10 15min to check if the pressure of piezometer remains in 0 1MPa 4 Close the vacuum pump and maintain this status for 1 2min to check if the pressure of piezometer remains in 0 1MPa If the pressure decreases there may be leakage 5 Remove the piezometer open the valve core of liquid valve and gas valve completely with inner hexagon spanner 6 Tighten the screw caps of valves and refrigerant charging vent As show in Fig 27 Liquid valve Gas valve Refrigerant chargin vent 5 Nut of refrigerant o Charging vent Inner hexagon spanner Fig 27 2 Leakage detection 1 With leakage detector Check if there is leakage with lea
88. sulation layer of power cord is damaged if yes place the power cord KEE for air switch is After energization air switch trips off Select proper air switch After energization operation indicator is bright Malfunction of remote controller while no display on remote controller or buttons have no action After energization room circuit breaker trips off at Electric leakage for air conditione once Replace batteries for remote controller Repair or replace remote controller 2 Poor Cooling Heating for Air Conditioner Possible Causes Discriminating Method Air conditioner Status Troubleshooting Set temperature is improper Observe the set temperature on remote controllerlAdjust the set temperature Rotation Speed of the IDU fan Small wind blow Set the fan speed at high or medium motor is set too low Filter of indoor unit is blocked Check the filter to see it s blocked Clean the filter Installation position for indoor unit e neck whether the installation postion is proper Adjust the installation position and install the PRA according to installation requirement for air and outdoor unit is improper conditiener rainproof and sunproof for outdoor unit Discharged air temperature during cooling is higher than normal discharged wind temperature Discharged air temperature during heating is Find out the leakage causes and deal with it lower than normal discharged wind temperature Add refrigerant Unit s pressure is much lo
89. t fan speed Press 31 button to adjust fan blowing angle e When selecting dry mode the air conditioner operates at low speed under dry mode Dry indicator on indoor unit is ON Under dry mode fan speed can t be adjusted Press 31 button to adjust fan blowing angle e When selecting fan mode the air conditioner will only blow fan no cooling and no heating all mode indicators are OFF operation indictor is ON Press FAN button to adjust fan speed Press 31 button to adjust fan blowing angle e When selecting heating mode the air conditioner operates under heat mode Heat indicator Xx on indoor unit is ON Press or button to adjust set temperature Press FAN button to adjust fan speed Press 31 button to adjust fan blowing angle Cooling only unit won t receive heating mode signal If setting heat mode with remote controller press ON OFF button can t start up the unit Note e For preventing cold air after starting up heating mode indoor unit will delay 1 5 minutes to blow air actual delay time is depend on indoor ambient temperature e Set temperature range from remote controller 16 30 C Fan speed auto low speed medium speed high speed 3 or Button e Press or button once increase or decrease set temperature 1 C Holding or button 2s later set temperature on remote controller will change quickly On releasing button after setting is finished temperat
90. tched After the outer fans run compulsively in high speed for 80s when the machine starts up control the air flow according to the logic After remote shutdown safety stops and when the machine stops after reaching the temperature point as well as after the compressor stops extend 1 minute the outer fans will stop During the period in the 1 minute the air flow of outer fans can be changed according to the outdoor ambient temperature changes When running with force the outdoor fans shall run in the highest air flow 36 0 9 Technical Information Service Manual 3 4 way valve control 1 The 4 way valve control under the modes of Cooling dehumidification and supplying air closing 2 The status of 4 way valve control under the heating mode getting power 1 4 way valve power control under heating mode a Starts the machine under heating mode the 4 way valve will get power immediately 2 4 way valve power turn off control under heating mode a When you should turn off the power or switch to other mode under heating mode the power of 4 way valve will be cut after 2 minutes of the compressor stopped b When all kinds of protection stops the power of 4 way valve will be cut after delaying 4 minutes 3 Defrosting control under heating mode a Defrosting begins The power of 4 way valve will be cut after 50s of entering into the defrosting compressor b Defrosting stops The 4 way valve will get power after 50s of exit
91. the inverted mode don t clear out the failure when it can t recover to operate 16 PFC Protection 1 After start up the PFC it should detect the protection signal of PFC immediately under the condition of PFC protection it should turn off the PFC and compressor at one time 2 It shows the failure is cleared out if PFC Protection stopped working 3 min and recovers to run automatically 3 If it still can t run when it occurs PFC protection for 3 times in succession it is available if presses ON OFF and clear the PFC Protection times when start up PFC for 10min 17 Failure Detection for Sensor 1 Outdoor Ambient Sensor detect the failure of sensor at all times 2 Outdoor Tube Sensor You should not detect the failure of outdoor tube sensor within 10 minutes heating operation compressor except the defrosting and you could detect it at other time 3 Outdoor Exhaust Sensor a The compressor only detect the sensor failure after it start up 3 min in normal mode b It should detect the exhaust sensor failure immediately in the testing mode 4 Module Temperature Sensor a Short Circuit Detection the compressor should be detected immediately when the module temperature sensor occurs short circuits b Open Circuit Detection the compressor should be detected on open circuit when it runs 3min it needn t 30s avoiding the module over heated c Detect the sensor failure at all times in the testing mode 5 Disposal fo
92. the lower limit After it was running 90s at the lower limit if T heating overload frequency reducing temperature at normal speed ST inner pipe then overload protects machine stopping 3 Reducing frequency at high speed and power turn off lf T heating overload frequency reducing temperature at high speed lt Tinner pipe lt T heating overload power turn off temperature you should adjust the compressor frequency by reducing 30Hz 90s till the lower limit After it was running 90s at the lower limit if T heating overload frequency reducing temperature at normal speed lt T outer pipe then Cooling overload protects machine stopping 4 Power turn off If the Theating overload power turn off temperature lt Tinner pipe then overload protects machine stopping If T inner pipe T heating overload frequency limited temperature and the compressor has been stopped working for 3 minutes the machine should be allowed to operate 5 If the overload protection power turn off continuously occurs for six times it should not be resumed automatically and you should press the ON OFF button to resume if the fault keeps on During the process of running if the running time of compressor exceeds the t overload protection times zero clearing time the times of overload protection power turn off should be cleared to recount The mode of stopping the machine or transferring to supply air will clear the trouble times immediately if the trouble can not be resumed tr
93. this button again to turn on display light x3 icon is displayed Function Introduction for Combination Buttons Child lock function Press and simultaneously to turn on or turn off child lock function When child lock function is on icon is displayed on remote controller If you operate the remote controller it won t send signal Temperature display switchover function Under OFF status press and MODE buttons simultaneously to switch temperature display between C and F 0 09 Technical Information Service Manual Operation Guide 1 After putting through the power press ON OFF button on remote controller to turn on ED i x a the air conditioner O 2 Press MODE button to select your required mode AUTO COOL DRY FAN HEAT Q0 3 Press or button to set your required temperature Temperature can t be ES adjusted under auto mode Ca 4 Press FAN button to set your required fan speed auto low medium and high speed _ 5 Press SI button to select fan blowing angle Replacement of Batteries in Remote Controller 1 Press the back side of remote controller marked with as shown in the fig and then push out the cover of battery box along the arrow direction 2 Replace two 7 AAA 1 5V dry batteries and make sure the position of polar and polar are correct 3 Reinstall the cover of battery box Note Signal se
94. tiate the auto ON timer To cancel the auto timer program simply press this button again After press of this button CH disappears and ON blinks 00 00 is displayed for ON time setting Within 5 seconds press or button to adjust the time value Every press of either button changes the time setting by 1 minute Holding down either button rapidly changes the button changes the time setting by 1 minute Holding down either button rapidly changes the time setting by 1 minute and then 10 minutes Within 5 Seconds after setting press TIMER ON button to confirm IJ SLEEP Press this button to go into the SLEEP operation mode Press it again to cancel this function This function is available in COOL HEAT Only for models with heating function This function is available in COOL HEAT Only for models with heating function mode to maintain the most comfortable temperature for you TEMP Press this button you can see indoor set temperature indoor ambient temperature on indoor unit s display The setting on remote controller is selected circularly as below no display Co When selecting 4 with remote controller or no display temperature indicator on indoor unit displays set temperature When selecting 3 with remote controller temperature indicator on indoor unit displays indoor ambient temperature 3s later or within 3s it receives other remote control signal that will return to display the setting temperature Caution
95. timer CLOCK Press it set clock TIMER ON Press it to set auto on timer SLEEP TEMP TURBO X FAN LIGHT Press the button left to turn X FAN function on off Press the button right to turn on off the light ey E EN HH AE FEEL D Press it to set HEALTH or AIR function MODE icon If MODE button is pressed current operation mode icon AUTO ZS COOL amp DRY FAN or e HEAT is only for heat pump models will show SLEEP icon Cis displayed by pressing the SLEEP button Press this button again to clear the display LIGHT icon Vis displayed by pressing the LIGHT button Press LIGHT button again to clear the display TEMP icon Pressing TEMP button A set temperature A indoor ambient temperature A outdoor ambient temperature Optional for some models and blank is displayed circularly Up amp down swing icon 21 is displayed when pressing the up amp down swing button Press this button again to clear the display A e Technical Information Service Manual LOCK icon E is displayed by pressing and buttons simultaneously Press them again to clear the display SET TIME display After pressing TIMER button ON or OFF will blink This area will show the set time DIGITAL display This area will show the set temperature In SAVE mode SE will be displayed During defrosting operation H1 will be displayed AIR icon N is displayed when pressing th
96. unction The unit lights for 4s when energizing for the first time and 3s for later press Replacement of Batteries 1 Remove the battery cover plate from the rear of the remote controller As shown in the figure 2 Take out the old batteries 3 Insert two new AAA1 5V dry batteries and pay attention to the polarity 4 Reinstall the battery cover plate X Notes e When replacing the batteries do not use old or different types of batteries otherwise it may cause malfunction e Ifthe remote controller will not be used for a long time please remove batteries to prevent batteries from leaking e The operation should be performed in its receiving range It should be kept 1m away from the TV set or stereo sound sets e Ifthe remote controller does not operate normally please take the batteries out and reinsert them after 30 seconds If it still can t operate properly ce ee replace the batteries Technical Information o 31 Service Manual 32 6 2 Brief Description of Modes and Functions Indoor Unit 1 Basic function of system 1 Cooling mode 1 Under this mode fan motor swing will work under setting status the temp range is 16 30 C 61 86 Fahrenheit scale 2 Outdoor unit malfunction or unit stop running indoor unit will keep original running status malfunction displayed 3 When0 Tset Tamb if indoor fan motor is high speed that the fanmotorist running in middle speed the middle speed or low speed will
97. ure indicator on indoor unit will change accordingly Temperature can t be adjusted under auto mode e When setting TIMER ON TIMER OFF or CLOCK press or button to adjust time Refer to CLOCK TIMER ON TIMER OFF buttons u u 4 FAN Button Pressing this button can set fan speed circularly as auto AUTO low a medium ad high adl Gi ar gr gl 5 Note e Under AUTO speed the IDU fan motor will adjust the fan speed high medium or low speed according to ambient temperature e Fan speed under dry mode is low speed 5 31 Button Press this button can select up amp down swing angle Fan blow angle can be selectedcircularly as below A ebe o displaye Y 4 la la lt horizontal ls l gt l A A stops at current position e When selecting 31 air conditioner is blowing fan automatically Horizontal louver will automatically swing up amp down at maximum angle e When selecting 1 TE IN A air conditioner is blowing fan at fixed position Horizontal louver will stop at the fixed position e When selecting ME zl air conditioner is blowing fan at fixed angle Horizontal louver will send air at the fixed angle e Hold 21 button above 2s to set your required swing angle When reaching your required angle release the button Note m J ShA may not be available When air conditioner receives this signal the air conditioner will blow fan automatically 6 CLOCK B
98. ut prompt tone 3 Auto button When the button is pushed the unit will operate in auto mode and the indoor fan will run in auto state When the indoor fan is running the wind blow motor will work When the button is pushed again the unit will be switched off At the same time as the button is pushed the whole unit will be powered on and enter into fast test mode when the unit is powered on and detects for continuous 20s such time shall not be fast tested that the auto button is pushed and if the unit is currently at fast test state the unit will quit the fast test state Technical Information o 33 Service Manual 4 Sleep function In this mode the unit will select the suitable sleep curve to run according to the different setting temperature 5 Timing function The main board integrates general timing and moment timing Such two timing functions can be selected through a remote controller on which different functions are arranged 1 General timing Timing start timing start can be set when the unit is off When preset time is reached the controller will operate in a preset mode Timing can be set at an interval of 0 5 hour in a scope of 0 5 24 hours Timing stop timing stop can be set when the unit is on When preset time is reached the system will be turned off Timing can be set at an interval of 0 5 hour in a scope of 0 5 24 hours 2 Moment timing Timing start if timing start is set when the system is at oper
99. utton Press this button to set clock time icon on remote controller will blink Pess or button within 5s to set clock time Each pressing of or button clock time will increase or decrease 1 minute If hold or button 2s later time will change quickly Release this button when reaching your required time Press CLOCK button to confirm the time icon stops blinking Note e Clock time adopts 24 hour mode e The interval between two operation can t exceeds 5s Otherwise remote controller will quit setting status Operation for TIMER ON TIMER OFF is the same 7 TIMER ON TIMER OFF Button e TIMER ON button TIMER ON button TIMER ON button can set the time for timer on After pressing this button icon disappears and the word ONT on remote Technical Information o 25 Service Manual 26 controller blinks Press or button to adjust TIMER ON setting After each pressing or button TIMER ON setting will increase or decrease 1min Hold or button 2s later the time will change quickly until reaching your required time Press TIMER ON to confirm it The word ON will stop blinking icon resumes displaying Cancel TIMER ON Under the condition that TIMER ON is started up press TIMER ON button to cancel it e TIMER OFF button TIMER OFF button can set the time for timer off After pressing this button icon disappears and the word OFF
100. wer than regulated range Malfunction of 4 way valve blow cold wind during heating Replace the 4 way valve Discharged air temperature during cooling is higher than normal discharged wind temperature Discharged air temperature during heating is Malfunction of capillary lower than normal discharged wind temperature Replace the capillary Unit t pressure is much lower than regulated range If refrigerant isn t leaking part of capillary is blocked Flow volume of valve is Pressure at the valve is much lower than the E em A Open the valve completely insufficient regulated range i Malfunction of horizontal louver Horizontal louver can t swing ses points ot maintenance method for Malfunction of the IDU fan motor The IDU fan motor can t operate Refer to troubleshooting for H6 for maintenance method in details Malfunction of the ODU fan motor The ODU fan motor can t operate Ge point 4 of maintenance method for Malfunction of compressor Compressor can t operate e point 5 of maintenance method for 3 Horizontal Louver Can t Swing Possible Causes Discriminating Method Air conditioner Status Troubleshooting Refrigerant is leaking i Connect wires according to wiring diagram to rong wire connection or poor Check the wiring status according to circuit nd 9 g diag make sure all wiring terminals are connected connection diagram irmly tepping motor is damaged Stepping motor can t operate Repair or replace stepping motor

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