INVERTER SERIES
Contents
1. Air inlet cp 5 fa EE t EE Air y w gt Model W D H W1 A B CHEO 0911M A1 760 285 590 823 530 290 CHEO 1211M A1 CHEO 1811M A1 845 320 700 908 560 335 CHEO 2411M A1 900 315 860 980 590 333 4 Refrigerant Cycle Diagram 12 INDOOR HEAT EXCHANGE EVAPORATOR OUTDOOR LIQUID SIDE Electronic Expansion Valve 22 lt TH AO a WAY VALVE CAPILIARY TUBE Y HEAT EXCHANGE CONDENSER GAS SIDE Y 3 WAY VALVE REVERSING VALVE ACCUMULATOR COOLING COMPRESSOR 4 13 5 Wiring Diagram 5 1 Indoor Unit CHE 0911M A1 CHE 1211M A1 CHE 1811M A1 202032891227 N O0 2 ge 5 56 EEE INDOOR WIRING DIAGRAM This symbol indicates the element is optional the actual shape shall be prevail CHE 2411M A1 Do This symbol indicates the element 202092591322 is optional the actual shape shall OPTIONAL Y 6 TON cD SWIMG MOTOR2 OPTIONAL 52 1112506 2 6 amp 6 INDOOR WIRING DIAGRAM 14 5 2 Outdoor Unit CHEO 0911M A1 CHEO 1211M A1 202037590983 different terminals GND can be connected i 1 OUTDOOR MAIN e v 4 gt 2 HEATER 1 f CHE 1811M A1 2020378907052. High Efficiency INVERTER SERIES Service Manual CHE CHEO Models Zu esed CERTIFIED CONTENTS T CAUTION Ene EE 3 Td Safety PRECAUTION sie oett ite et eis a Beet Eti teats rl tati tea ter pet 3 2M arming c ue e beue ote as EUM ME 3 2 PUNCU Ee 8 3 DIMENSION REESE 10 sess T 10 9 2 Outdoor 12 4 Refrigerant Cycle Diagram ccseccccsseeeeeeeeeseeeeeeseaeeeeeeeesseseneeessaaaeseesaeesagseeeesscaaesenenessesseeeessseneeeees 12 5 Wiring Diagram eerte trevecuueteestssedeesavetssuetsentiedseseaccutecrevectucnunre 14 S Indoor WAIL PA 14 5 2 Outdoor e ee peat cte qu ebat bas i e esee feta 15 6 Mnstallation Details e 17 6 1 Wrench torque sheet for installation siot ecc e e eo ODE ne EUR tee Eten ick 17 D2 Gonnecting the Cables ER 17 6 3 Pipe length and the elevation erm ner tni erkennt e 18 6 4 Installation for the 4444 nnne 19 6 5 Adding the refrigerant after running the system for many years 22 6 6 Re installation while the indoor unit need to be 23 6 7 Re installation while the outdoor unit need to be re
3. Close Procedure 1 Confirm that both the 2 way and 3 way valves are set to the opened position Remove the valve stem caps and confirm that the valve stems are in the opened position Be sure to use a hexagonal wrench to operate the valve stems 2 Connect the charge hose with the push pin of handle lo to the 3 way valves gas service port 3 Air purging of the charge hose Open the handle Lo valve of the manifold valve slightly to purge air from the charge hose for 5 seconds and then close it quickly 23 4 Set the 2 way valve to the close position 5 Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0 1MPa 6 Set the 3 way valve to the closed position immediately Do this quickly so that the gauge ends up indicating 0 3 to 0 5Mpa Disconnect the charge set and tighten the 2 way and 3 way valve s stem nuts Use a torque wrench to tighten the 3 way valves service port cap to a torque of 18N m Be sure to check for gas leakage 2 Air purging by the refrigerant gt Outdoor unit Charging cylinder Procedure 1 Confirm that both the 2 way and 3 way valves are set to the closed position 2 Connect the charge set and a charging cylinder to the service port of the 3 way valve Leave the valve on the charging cylinder closed 3 Air purging Open the valves on the charging cylinder and the charge set Purge the air by looseni
4. d L 1 0 E For MS11M 24HRFN1 MTOW model 1 27 5 T Medium 255 Sj gt 25 Y Low 8 4 2 Cooling Mode 8 4 2 1 Compressor running rules The maximum operation frequency of compressor after starting submits to following rule 33 Tal 4 45 43 40 Fmax F7 38 31 5 Fmax F8 29 5 22 Fmax F6 20 Fmax F3 Y If users switch on AC by remote controller the compressor will run at the Fmax frequency for 7 minutes according to the outdoor ambient temp During the 7 minutes the frequency limitation is active 7 minutes later the compressor running frequency will be controlled as below rs 1 3 5 3 0 2 5 2 0 While the zones of are corresponding to different compressor running frequency Note When T1 Ts keeps in the same temp zone for 3 minutes the compressor will run as the below rules A E Increase the frequency to the higher level until to F8 F Keep the current frequency 34 G Decrease the frequency to the lower level until to F1 H Run at F1 for 1h if T1 Ts lt 2 C the compressor will stop Meanwhile the compressor running frequency is limited by the current I Off I3COOL Decrease I2COOL Hold COOL N Resume Off Compressor stops Decrease Decrease the running frequency to the lower level Hold Keep the current
5. 0 1MPay 2 Handle Handle Hi Charge hose Charge hose O pumpy x d E Vas m pump N 1 Completely tighten the flare nuts of the indoor and outdoor units confirm that both the 2 way and 3 way valves are set to the closed position Connect the charge hose with the push pin of handle lo to the 3 way valves gas service port Connect the charge hose of handle hi connection to the vacuum pump Fully open the handle Lo of the manifold valve Operate the vacuum pump to evacuate Make evacuation for 30 minutes and check whether the compound meter indicates 0 1 If 19 Co N the meter does not indicate 0 1Mpa after pumping 30 minutes it should be pumped 20 minutes more If the pressure can t achieve 0 1Mpa after pumping 50 minutes please check if there are some leakage points Fully close the handle Lo valve of the manifold valve and stop the operation of the vacuum pump Confirm that the gauge needle does not move approximately 5 minutes after turning off the vacuum pump 7 Turn the flare nut of the 3 way valves about 45 counterclockwise for 6 or 7seconds after the gas coming out then tighten the flare nut again Make sure the pressure display in the pressure indicator is a little higher than the atmosphere pressure Then remove the charge hose from the 3 way valve 8
6. OPTIONAL OPTIONAL HEATER user gt se OUTDOOR WIRING DIAGRAM 15 2411 1 202038090851 1 Only being used rcs OPTIONAL HEATER HEATER 2 EN OUTDOOR ME for after sales j _ maintenance 16 6 Installation Details 6 1 Wrench torque sheet for installation Outside diameter Torque Additional tightening mm inch N cm 6 35 1 4 1500 153kgf cm 1600 163kgf cm 9 52 3 8 2500 255kgf cm 2600 265kgf cm 127 1 2 3500 357kgf cm 3600 367kgf cm 15 9 5 8 4500 459kgf cm 4700 479kgf cm 019 3 4 6500 663kgf cm 6700 683kgf cm 6 2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet Rated current of appliance Nominal cross sectional area and i0 10 and i6 16 and 25 The cable size and the current of the fuse or switch are determined by the maximum current indicated on the nameplate which located on the side panel of the unit Please refer to the nameplate before selecting the cable fuse and switch 17 6 3 Pipe length and the elevation The pipe length and refrigerant amount Stand ard length refrig erant uid i OA g m CHE 0911M A1 CHEO 0911M A1 3 8 6 35 L CHE 1211M A1 CHEO 1211M A1 8 CHE
7. Press the silence button on remote controller to initiate SILENCE function When the Silence function is activated the compressor running frequency will keep lower than F2 and the indoor unit will bring faint breeze which will reduce the noise to the lowest level and create a quiet and comfortable room for you 48 9 Troubleshooting 9 1 Indoor Unit Error Display Operation LED STATUS lamp x 1 time Indoor unit EEPROM parameter error 2 times Indoor outdoor units communication error 4 times Indoor fan speed has been out of control Indoor room temperature sensor T1 open circuit or yx 5 times short circuit Evaporator coil temperature sensor T2 open circuit 6 times or short circuit Outdoor ambient temperature sensor T4 open 2 times circuit or short circuit Condenser coil temperature sensor T3 open circuit 3 times or short circuit Compressor discharge temperature sensor T5 open 4 times circuit or short circuit 5 times F4 Outdoor unit EEPROM parameter error 6 times F5 Outdoor fan speed has been out of control IPM malfunction or IGBT over strong current 1 times protection 2 times Over voltage or over low voltage protection High temperature protection of compressor top 3 times x diagnosis and solution only for 9k 12k models yw 5 times Inverter compressor drive error O light X off flash 49 9 2 Diagnosis and Soluti
8. W Ww Ww Compressor DA110S1C 30FZ DA110S1C 30FZ DA130M1C 31FZ 60 61 2 Compressor checking Measure the resistance value of each winding by using the tester Input Terminal rd Blue Blue 4 Red 2 N A Black 0 o Red Resistance Value DA110S1C 30FZ Blue Red Blue Black Red Blue 3 IPM continuity check DA130M1C 31F 2 Turn off the power let the large capacity electrolytic capacitors discharge completely and dismount the IPM Use a digital tester to measure the resistance between P and UVWN UVW and N Digital tester Normal resistance value 4 Red Black N co P Several E Normal Digital tester resistance value Red Black U oo V N Several MO W 62
9. H T KUZ Check valve valve Lets CLOSE m LAr c Charging cylinder Electronic scale Procedure 1 Connect the charge hose to the 3 way service port open the 2 way valve and the 3 way valve Connect the charge hose to the valve at the bottom of the cylinder If the refrigerant is R410A make the cylinder bottom up to ensure liquid charge 2 Purge the air from the charge hose Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air be careful of the liquid refrigerant 3 Put the charging cylinder onto the electronic scale and record the weight 4 Operate the air conditioner at the cooling mode 22 5 Open the valves Low side on the charge set and charge the system with liquid refrigerant 6 When the electronic scale displays the proper weight refer to the gauge and the pressure of the low side disconnect the charge hose from the 3 way valve s service port immediately and turn off the air conditioner before disconnecting the hose 7 Mount the valve stem caps and the service port Use torque wrench to tighten the service port cap to a torque of 18N m Be sure to check for gas leakage 6 6 Re installation while the indoor unit need to be repaired 1 Collecting the refrigerant into the outdoor unit Outdoor unt 00 L M 2 way Gas side P C AU Cun Clogo
10. in heating mode For MS11M O9HRFN1 MWOW MS11M 12HRFN1 MVOW MS11M 18HRFN1 MUOW models Ti Tsd Fo 0 0 L 40 H L 0 2 L 20 H L 0 4 L 3 0 L H L 0 6 L 4 0 MH 5 0 s H L 0 8 L 6 0 6 5 od i For MS11M 24HRFN1 MTOW model T1 Ts 4 Low 2 5 2 0 Medium 1 5 X High Y 8 4 3 4 Defrosting mode Condition of defrosting T4 gt 0 C When the units are running if the following two items are satisfied the units start defrosting 40 The units run with lt 3 for 40 minutes and keeps lower than TCDI C for more than minutes The units run with T3 lt 3 for 80 minutes and keeps lower than TCDI 2 C for more than minutes T4 lt 0 C If the 15 condition and 2 condition items are satisfied then the program judges if T2 has decreased more than 5 C When T2 has decreased more than 5 C enter the defrosting mode No matter what value of the T4 is and whether the T2 drops more than 5 C or not if the machine runs with lt 3 for more than 120 minutes and keeps lower than TCDI 4 C for more than 3 minutes the machine will enter defrosting mode Condition of ending defrosting If any one ofthe following items is satisfied the defrosting will finish and the machine will turn to normal heating mode T3 rises to be higher than TCDE1 C T3 keeps to be higher than TCDE2 C for 80 seconds
11. not been changed 8 4 8 7 The setting time is relative time 8 4 9 Sleep function mode 8 4 9 1 Operation time in sleep mode is 7 hours After 7 hours the AC quits this mode and turns off 8 4 9 2 Operation process in sleep mode is as follow When cooling the setting temperature rises 1 C be lower than 30 every one hour 2 hours later the setting temperature stops rising and the indoor fan is fixed at low speed When heating the setting temperature decreases 1 be higher than 17 every one hour 2 hours later the setting temperature stops rising and indoor fan is fixed at low speed Anti cold wind function has the priority 8 4 9 3 Timer setting is available 8 4 9 4 When user uses timer off function in sleep mode or sleep function in timer off mode if the timing is less than 7 hours sleep function will be cancelled when reaching the setting time If the timing is more than 7 hours the machine will not stop until reaches the setting time in sleep mode 8 4 10 Auto Restart function The indoor unit is equipped with auto restart function which is carried out through an auto restart module In case of a sudden power failure the module memorizes the setting conditions before the power failure The unit will resume the previous operation setting not including swing function automatically after 3 minutes when power returns If the memorization condition is forced cooling mode the unit will run in cooling mode for 30 m
12. risk of damage or loss of property B Do not block the inlet or outlet of air flow B Use a soft cloth to clean Do not use harsh detergents solvents etc There is risk of fire electric shock or damage to the plastic parts of the product Do not touch the metal parts of the product when removing the air filter They are very sharp B Do not step on or put anything on the product outdoor units B 3 Always insert the filter securely Clean the filter every two weeks or more often if necessary A dirty filter reduces the efficiency of the air conditioner and could cause product malfunction or damage B Do not insert hands or other objects through air inlet or outlet while the product is operated B Do not drink the water drained from the product m Use a firm stool or ladder when cleaning or maintaining the product Be careful and avoid personal injury W Replace the all batteries in the remote control with new ones of the same type Do not mix old and new batteries or different types of batteries There is risk of fire or explosion B not recharge or disassemble the batteries Do not dispose of batteries in a fire They may burn of explode B Ifthe liquid from the batteries gets onto your skin or clothes wash it well with clean water Do not use the remote of the batteries have leaked 6 2 Function Model Names of Indoor Outdoor Units Capacity Indoor units Outdoor units 9k CHE 091 1M A1 CH
13. the error extinguished No No v v Change the indoor main PCB Change the outdoor main PCB 51 9 2 3 Fan speed has been out of control diagnosis and solution E3 E7 Shut off the power supply and turn it on 5 seconds later Is it still displaying the error code Yes Y Shut off the power supply rotate the fan by hand Does it rotate properly Yes Y Check the wires of fan motor Are all the connections good Yes t Check whether the fan motor is normal through index 1 Yes The unit operates normally Find out the cause and have it solved For No example check whether the fan is blocked or the bearing is broken No Correct the connections y Check whether the main PCB is normal through index 2 If the malfunction is No Replace m still existing motor replace the 1 A main PCB No Replace the main PCB malfunction is solved Yes 52 Index 1 1 Indoor or Outdoor DC Fan Motor control chip is in fan motor Measure the resistance value of each winding by using the tester If any resistance value is zero the fan motor must has problems and need to be replaced N Index2 1 Indoor or Outdoor DC Fan Motor control chip is in fan motor Power on and when the unit is in standby measure the voltage of pin1
14. 1811M A1 CHEO 1811M A1 i 14 52 1 2 74 12 7 6 35 5 8 3 8 CHE 2411M A1 2411 1 15 9 9 52 Indoor unit 1 1 Indoor unit Outdoor unit Caution The capacity test is based on the standard length and the maximum permissive length is based on the system reliability The oil trap should be installed per 5 7 meters 18 6 4 Installation for the first time Air and moisture in the refrigerant system have undesirable effects as below Pressure in the system rises Operating current rises Cooling or heating efficiency drops Moisture in the refrigerant circuit may freeze and block capillary tubing Water may lead to corrosion of parts in the refrigerant system Therefore the indoor units and the pipes between indoor and outdoor units must be leak tested and evacuated to remove gas and moisture from the system Gas leak check Soap water method Apply soap water or a liquid neutral detergent on the indoor unit connections or outdoor unit connections by a soft brush to check for leakage of the connecting points of the piping If bubbles come out the pipes have leakage 1 Air purging with vacuum pump nm Outdoor unit Liquid side c 2 Two ee Cle Gas side efor Way valve Close Manifold cai meter S i gauge
15. AN Liquid side y varo k Outdoor unit Charging cylinder Electronic 1 Connect the charge hose to the charging cylinder open the 2 way valve and the 3 way valve Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder If the refrigerant is R410A make the cylinder bottom up to ensure the liquid charge 2 Purge the air from the charge hose Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air be careful of the liquid refrigerant 3 Put the charging cylinder onto the electronic scale and record the weight 21 4 Operate the air conditioner at the cooling mode 5 Open the valves Low side on the charge set and charge the system with liquid refrigerant 6 When the electronic scale displays the proper weight refer to the table disconnect the charge hose from the 3 way valve s service port immediately and turn off the air conditioner before disconnecting the hose 7 Mount the valve stem caps and the service port Use torque wrench to tighten the service port cap to a torque of 18N m Be sure to check for gas leakage 6 5 Adding the refrigerant after running the system for many years EX s Outdoor unit 27 2 way vane cg X 6 _ 7 Gas side
16. Always install a dedicated circuit and breaker Improper wiring or installation may cause fore or electric shock B Usethe correctly rated breaker of fuse There is risk of fire or electric shock B Do not modify or extend the power cable There is risk of fire or electric shock B Do not install remove or reinstall the unit by yourself customer There is risk of fire electric shock explosion or injury B Becaution when unpacking and installing the product Sharp edges could cause injury be especially careful of the case edges and the fins on the condenser and evaporator For installation always contact the dealer or an authorized service center Do not install the product on a defective installation stand Be sure the installation area does not deteriorate with age If the base collapses the air conditioner could fall with it causing property damage product failure and personal injury Do not let the air conditioner run for a long time when the humidity is very high and a door or a window is left open B Take care to ensure that power cable could not be pulled out or damaged during operation There is risk of fire or electric shock B Do not place anything on the power cable There is risk of fire or electric shock Do not plug or unplug the power supply plug during operation There is risk of fire or electric shock B Do not touch operation the product with wet hands B Do not place a heater or other applianc
17. DEFROST indication lamp For cooling amp heating models only Lights up when the air conditioner starts defrosting automatically or when the warm air control feature is activated in heating operation OPERATION indication lamp This lamp illuminates when the air conditioner is in operation TIMER indication lamp Lights up during Timer operation Temperature indicator Displays the temperature settings when the air H conditioner is operational Displays the malfunction code 30 8 3 Main Protection 8 3 1 Three Minutes Delay at restart for compressor 1 minute delay for the 1 time start up and 3 minutes delay for others 8 3 2 Temperature protection of compressor top The unit will stop working when the compressor top temp protector cut off and will restart after the compressor top temp protector restart 8 3 3 Temperature protection of compressor discharge When the compressor discharge temp is getting higher the running frequency will be limited as below rules Compressor discharge temp T5 gt 115 C for 5s compressor stops 108 lt T5 lt 115 C decrease the frequency to the lower level every 3 minutes 90 lt T5 lt 105 C keep running at the current frequency T5 lt 90 C no limit for frequency 8 3 4 Fan Speed is out of control When Indoor Fan Speed keeps too low 300RPM for certain time the unit will stop and the LED will display the failure 8 3 5 Inverter module Protec
18. EO 091 1M A1 pis 12k CHE 1211M A1 CHEO 1211M A1 Inverter 18k CHE 1811M A1 CHEO 1811M A1 24k CHE 2411M A1 CHEO 2411M A1 Filter Cold catalyst filter lonizer O Plasma O Silver Ico Filter O Vitamin C Filter O 3M HAM Filter O Bio Filter O Golden Fin O Self Clean O Follow Me O Silent mode O Louver Position Memory Function Refrigerant Leakage Detect Mono amp Multi compatible Self diag Function Hydrophilic Aluminum Fin Anti rust Cabinet Valve Protection Cover PTC Heating Belt O Compressor Crankcase Heater O optional function 3 Dimension 3 1 Indoor Unit 0911 1 1211 1 1811 1 2411 1 L Dimension of installation Model mm hole mm EXE 0911M A1 65 211 1 10 Dimension of installation Model mm mm mm hole mm Dimension of installation hole mm 11 3 2 Outdoor Unit More than 30cm 777777 SKY P d More than 60cm Service space More than 60cm m RR A Air
19. Fully open the 2 way valve and 3 way valve and securely tighten the cap of the 3 way valve 2 Air purging by refrigerant Th TIEZZ Liquid side aum n Outdoor unit het win 6 f A Charging cylinder Procedure 1 Confirm that both the 2 way and 3 way valves are set to the closed position 2 Connect the charge set and a charging cylinder to the service port of the 3 way valve 3 Air purging Open the valves on the charging cylinder and the charge set Purge the air by loosening the flare nut on the 2 way valve approximately 45 for 3 seconds then closing it for 1 minute repeat 3 times After purging the air use a torque wrench to tighten the flare nut on the 2 way valve 4 Check the gas leakage Check the flare connections for gas leakage 20 5 Discharge the refrigerant Close the valve on the charging cylinder and discharge the refrigerant by loosening the flare nut on the 2 way valve approximately 45 until the gauge indicates 0 3 to 0 5 Mpa 6 Disconnect the charge set and the charging cylinder and set the 2 way and 3 way valves to the open position Be sure to use a hexagonal wrench to operate the valve stems 7 Mount the valve stems nuts and the service port cap Be sure to use a torque wrench to tighten the service port cap to a torque 18N m Be sure to check the gas leakage 3 Adding the refrigerant if the pipe length gt 5m Indoor unit TZ
20. The machine has run for 10 minutes in defrosting mode Defrosting action For 9k 12k models 41 Compressor 4 way valve Outdoor fan Indoor fan on off on off on off on off Frequency F2 FrequencyF8 Indoor fan breeze 10s XX 60 For 18k 24k models 10s no longer than 10m 10s 42 Frequency F2 Frequency F8 on Compressor off on 4 way valve off on Outdoor fan off on Indoor fan off 10s Indoor fan breeze 10s BOX X 10s no longer than 10m 30s XX 90s 8 4 3 5 Evaporator coil temperature protection T2 gt TEH2 C the compressor running frequency decreases to the lower level and runs for 20s When the frequency decreases to F2 and the T2 is still over TEH2 C for 3 minutes the compressor will stop T2 lt 48 C or T2 stays in 48 C TEH2 C for 6 minutes the frequency will not be limited by T2 T2 gt 60 C the compressor will stop and restart when T2 lt 48 C 8 4 4 Auto mode This mode can be chosen with remote controller and the setting temperature can be changed between 17 30 C In auto mode the machine will choose cooling heating or fan only mode according to AT AT T1 Ts 43 Indoor fan will run at auto fan of the relevant mode The louver operates same as in relevant mode If the machine switches mode between he
21. ating and cooling the compressor will keep stopping for 15 minutes and then choose mode according to T1 Ts If the setting temperature is modified the machine will choose running function again 8 4 5 Drying mode 8 4 5 1 Indoor fan speed is fixed at breeze and can t be changed The louver angle is the same as in cooling mode 8 4 5 2 Compressor running rules T 1 A T S 2 5 ra em eerie raf m NIE T SI uM ee 5 F1 d 0 0 F Y 8 4 5 3 Low indoor room temperature protection In drying mode if room temperature is lower than 10 C the compressor will stop and not resume until room temperature exceeds 12 8 4 5 4 Evaporator anti freezing protection condenser high temperature protection and outdoor unit frequency limit are active and the same as that in cooling mode 8 4 5 5 The outdoor fan operates the same as in cooling mode 44 8 4 6 Oil return 8 4 6 1 If the compressor running frequency is lower than 35Hz for 80 minutes the frequency will be raised to 58 Hz The unit will keep running at 58Hz for 60 seconds and then run at former frequency 8 4 6 2 If the unit is in defrosting mode the oil return function is inactive 8 4 6 3 Quit oil return if the unit has malfunction protection or frequency limitation 8 4 7 Forced operation function 8 4 7 1 Enter forced operation function When the machine is off pressing the touch button will carry the machine to forced auto mode I
22. e near the power cable There is risk of fire and electric shock B Do not allow water to run into electrical parts It may cause fire failure of the product or electric shock B Do not store or use flammable gas or combustible near the product There is risk of fire or failure of product B not use the product in a tightly closed space for a long time Oxygen deficiency could occur m When flammable gas leaks turn off the gas and open a window for ventilation before turn the product on If strange sounds or smoke comes from product turn the breaker off or disconnect the power supply cable There is risk of electric shock or fire Stop operation and close the window in storm or hurricane If possible remove the product from the window before the hurricane arrives There is risk of property damage failure of product or electric shock B Do not open the inlet grill of the product during operation Do not touch the electrostatic filter if the unit is so equipped There is risk of physical injury electric shock or product failure B When the product is soaked contact an authorized service center There is risk of fire or electric shock B Be caution that water could not enter the product There is risk of fire electric shock or product damage B Ventilate the product from time to time when operating it together with a stove etc There is risk of fire or electric shock B Turn the main power off when cleaning or maintainin
23. e vacuum pump 25 5 Disconnect the charge hose from the vacuum pump 26 2 Refrigerant charging Indoor uni YT Liquid GNU T T Charging cylinder Electronic scale Procedure 1 Connect the charge hose to the charging cylinder open the 2 way valve and the 3 way valve Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder If the refrigerant is R410A make the cylinder bottom up to ensure liquid charge 2 Purge the air from the charge hose Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air be careful of the liquid refrigerant 3 Put the charging cylinder onto the electronic scale and record the weight 4 Open the valves Low side on the charge set and charge the system with liquid refrigerant If the system cannot be charge with the specified amount of refrigerant or can be charged with a little atatime approximately 150g each time operating the air conditioner in the cooling cycle however one time is not sufficient wait approximately 1 minute and then repeat the procedure 5 When the electronic scale displays the proper weight disconnect the charge hose from the 3 way valve s service port immediately If the system has been charged with liquid refrigerant while operating the air conditioner turn off the air conditioner before disconnecting the ho
24. erature sensor will be available the PCB will control the unit according to the room temperature detected from its own room temperature sensor and setting temperature 8 4 12 Self clean optional For heat pump models which are provided with this function after running in cooling or drying mode if the user press Self Clean button on remote controller firstly indoor unit runs in fan only mode for a while then low heat operation and finally runs in fan only again This function can keep the inside of indoor unit dry and prevent breeding of mold 8 4 13 Refrigerant Leakage Detection With this new technology the display area will show EC when the outdoor unit detects refrigerant leakage 8 4 14 Louver Position Memory Function When starting the unit again after shutting down its louver will restore to the angle originally set by the user but the precondition is that the angle must be within the allowable range if it exceeds 47 it will memorize the maximum angle of the louver During operation if the power fails or the end user shuts down the unit in the turbo mode the louver will restore to the default angle 8 4 15 8 Heating optional In heating operation the preset temperature of the air conditioner can be as lower as 8 C which keeps the room temperature steady at 8 C and prevents household things freezing when the house is unoccupied for a long time in severe cold weather 8 4 16 Silence operation optional
25. f pressing the button once again within 5 seconds the machine will turn into forced cooling mode In forced auto forced cooling or any other operation mode pressing touch button will turn off the machine 8 4 7 2 In forced operation mode all general protections and remote control are available 8 4 7 3 Operation rules Forced cooling mode The compressor runs at F2 frequency and indoor fan runs as breeze After running for 30 minutes the machine will turn to auto mode as 24 setting temperature Forced auto mode The action of forced auto mode is the same as normal auto mode with 24 setting temperature 8 4 8 Timer function 8 4 8 1 Timing range is 24 hours 8 4 8 2 Timer on The machine will turn on automatically when reaching the setting time 8 4 8 3 Timer off The machine will turn off automatically when reaching the setting time 8 4 8 4 Timer on off The machine will turn on automatically when reaching the setting time and then turn off automatically when reaching the setting off time 8 4 8 5 Timer off on The machine will turn off automatically when reaching the setting off time and then turn on automatically when reaching the setting on time 45 8 4 8 6 The timer function will not change the AC current operation mode Suppose AC is off now it will not start up firstly after setting the timer off function And when reaching the setting time the timer LED will be off and the AC running mode has
26. frequency Resume No limitation for frequency Note When AC is in hold zone for 3 minutes the compressor frequency will rise to the higher level frequency will increase twice at most 8 4 2 2 Outdoor fan running rules Tal t 4 26 22 M d r L 8 4 2 3 Indoor fan running rules In cooling mode indoor fan runs all the time and the speed can be selected as high medium low auto and silent mode When the compressor is running the indoor fan is controlled as below For MS11M O9HRFN1 MWOW MS11M 12HRFN1 MVOW MS11M 18HRFN1 MUOW models 35 speed H H H G H H H G 2 L L L D L L L L L LD Ui uU ul Auto fan running rules For MS11M 09HRFN1 MWOW MS11M 12HRFN1 MVOW MS11M 18HRFN1 MUOW models T1 Ts 6 0 so Da 2 2 1 0 A For MS11M 24HRFN1 MTOW model 11 4 28 High pe tlc Medium 25 5 7 25 M Y Low 8 4 2 4 Condenser temperature protection 55 C lt T3 lt 60 C the compressor frequency will decrease to the lower level until to F1 and then runs at F1 If T3 lt 54 C the compressor will keep running at the current frequency T3 lt 52 C the compressor will not limit the frequency and resume to the former frequency T3 gt 60 C for 5 seconds the compressor will stop until T3 lt 52 C 8 4 2 5 Evaporator temperature protection 36 T2 lt 0 C the com
27. g the product There is risk of electric shock B Whenthe product is not be used for a long time disconnect the power supply plug or turn off the breaker There is risk of product damage or failure or unintended operation B Take care to ensure that nobody could step on or fall onto the outdoor unit This could result in personal injury and product damage gt CAUTION WB Always check for gas refrigerant leakage after installation or repair of product Low refrigerant levels may cause failure of product WB install the drain hose to ensure that water is drained away properly A bad connection may cause water leakage B Keep level even when installing the product It can avoid vibration of water leakage Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods It may cause a problem for your neighbors Use two or more people to lift and transport the product 5 Do not install the product where it will be exposed to sea wind salt spray directly It may cause corrosion on the product Corrosion particularly on the condenser and evaporator fins could cause product malfunction or inefficient operation gt Operational B not expose the skin directly to cool air for long time Do not sit in the draft B Do not use the product for special purposes such as preserving foods works of art etc It is a consumer air conditioner not a precision refrigerant system There is
28. inutes and turn to auto mode as 24 C setting temp If AC is off before power off and AC is required to start up now the compressor will have 1 minute delay when power on Other conditions the compressor will have 3 minutes delay when it restarts 46 8 4 11 Follow me optional 1 Ifthe indoor PCB receives the signal which results from pressing the FOLLOW ME button on remote controller the buzzer will emit a sound and this indicates the follow me function is initiated But when the indoor PCB receives signal which sent from remote controller every 3 minutes the buzzer will not respond When the unit is running with follow me function the PCB will control the unit according to the temperature from follow me signal and the temperature collection function of room temperature sensor will be shielded but the error detective function of room temperature sensor will be still valid 2 When the follow me function is available the PCB will control the unit according to the room temperature from the remote controller and the setting temperature 3 The PCB will take action to the mode change information from remote controller signal but it will not affected by the setting temperature 4 When the unit is running with follow me function if the PCB doesn t receive any signal from remote controller for 7 minutes or pressing FOLLOW ME button again the follow me function will be turned off automatically and the temperature collection function of room temp
29. m of indoor and outdoor units are obstructed No v Turn off the power supply and turn it on 10 minutes later Yes v Check if the unit can start normally Yes v Check if the refrigerant charge volume is normal lt v Refrigerant system is blocked such as capillary or welded point of pipes Yes No 2 Clear up the air inlet and outlet or the heat exchanger of indoor and outdoor units Check if all the connection especially the connection of OLP Over Load Protector sensor is good gt Correct the connection Yes v Measure the resistance between the two ports of the OLP Is it zero Recharge the correct refrigerant volume L Yes gt No Replace the OLP Replace the outdoor control PCB 9 2 8 Refrigerant Leakage Detection diagnosis and solution EC Shut off the power supply and turn it on 5 seconds later Is it still displaying the error code Yes t Is there cool air blowing out from indoor air outlet No Yes Check if T2 sensor is well fixed Correct the installation or replace T2 sensor Does the problem remain again Is there any leakage Especially the connection parts such as the gas valve and the liquid valve No Is there any bl
30. ng the flare nut on the 2 way valve approximately 45 for 3 seconds then closing it for 1 minute repeat 3 times After purging the air use a torque wrench to tighten the flare nut on the 2 way valve 4 Check the gas leakage Check the flare connections for gas leakage 24 5 Discharge the refrigerant Close the valve on the charging cylinder and discharge the refrigerant by loosening the flare nut on the 2 way valve approximately 45 until the gauge indicates 0 3 to 0 5 Mpa 6 Disconnect the charge set and the charging cylinder and set the 2 way and 3 way valves to the open position Be sure to use a hexagonal wrench to operate the valve stems 7 Mount the valve stems nuts and the service port cap Be sure to use a torque wrench to tighten the service port cap to a torque 18N m Be sure to check the gas leakage 6 7 Re installation while the outdoor unit need to be repaired 1 Evacuation for the whole system indoor unit Y AN Liquid side j Vacuum pump Procedure 1 Confirm that both the 2 way and 3 way valves are set to the opened position 2 Connect the vacuum pump to 3 way valve s service port 3 Evacuation for approximately one hour Confirm that the compound meter indicates 0 1Mpa 4 Close the valve Low side on the charge set turn off the vacuum pump and confirm that the gauge needle does not move approximately 5 minutes after turning off th
31. oard and uniform main PCB are integrated together Yes Refer to the solution of fan speed has been out of control malfunction Find out the cause and have it solved Check if the outdoor fan runs properly or the outdoor unit No gt ventilation is good Yes Check if the compressor resistance values are uniform Yes Y Replace the outdoor main PCB if the main PCB and IPM are separate No gt Replace the compressor 55 9 2 6 Over voltage or over low voltage protection diagnosis and solution P1 Check if the power supply is Disconnect the unit with power supply and try to restart the unit when power supply gets normal No normal Yes Check if all the connections N wires are good Yes i Power on and when the unit is in standby check if the voltage between P and N is around DC 310V or 340V or 380V For different kinds of units the voltage differs No Correct the connections or replace the wires Consult with technical engineer to get definite value Then start up the unit measure the voltage between P and Is itin 220V 400V Yes Replace outdoor main PCB 56 R Replace the IPM board if it is separate with main PCB 9 2 7 High temperature protection of compressor top diagnosis and solution P2 Check if the air flow syste
32. ocking Such as the capillary or the welded points of the pipes Yes Y Clear the blocking 57 Yes Y Replace indoor PCB Repair the leakage and recharge the refrigerant 9 2 9 Inverter compressor drive error diagnosis and solution P4 Check if the wiring between main PCB and compressor connected by error and if the wires and connectors are broken Correct the connection or No v Check if the IPM installed correctly Yes No y replace the wires and connectors Correct the installation v Yes Y IPM continuity check Check if the IPM terminal resistance values are uniform Yes Check if the outdoor fan runs properly or the outdoor unit ventilation is good Yes Check if the compressor resistance values are uniform Yes Y Replace the outdoor main PCB if the main PCB and IPM are separate tighten the screws and apply silicon grease No gt Replace the IPM board or replace the main PCB if the IPM board and main PCB are integrated together Refer to the solution of fan speed has been out of control malfunction Find out the cause and have it solved Replace the compressor 58 Safety Electricity power is still kept in capacitors even the power supply is shut off Do not forget to discha
33. on 9 2 1 EEPROM parameter error diagnosis and solution EO Shut off the power supply and turn it on 5 seconds later Is it still displaying the error code Yes If the EEPROM chip is welded on main PCB replace the main PCB directly Otherwise check No Correct the connection whether the EEPROM chip plugged in main PCB well Yes Replace the indoor main PCB EEPROM a read only memory whose contents can be erased and reprogrammed using a pulsed voltage 50 9 2 2 Indoor outdoor units communication error diagnosis and solution E1 Power off then turn on the unit 5 seconds later reconnect the power wire Is the error still displaying after several minutes Yes Check all the wirings between indoor and outdoor indoor main PCB and outdoor main PCB following the wiring diagram Are all the wirings connected correctly Yes Measure Vs is it moving alternately between positive value and negative value Vs is the voltage between S and N of outdoor unit Yes v Is the wiring to the indoor main PCB connected correctly Y Is the wiring to the outdoor main PCB connected correctly Yes Y Change the indoor main PCB Yes Y Change the outdoor main PCB v v Power on Is the error extinguished Power on Is
34. paired 25 7 Operation Characteristics 29 CMS TID DIDBIUIDSI T 30 8T EI NUN 30 SNAP VAM p 30 Seo 31 8 4 Operation Modes and 33 9 Troubleshooting 49 9 1 Indoor Unit Error Display 49 9 2 Diagnosis sc nae ae terre Mire een 50 1 Precaution 1 1 Safety Precaution WB prevent injury to the user or other people and property damage the following instructions must be followed incorrect operation due to ignoring instruction will cause harm or damage B Before service the unit be sure to read this service manual at first 1 2 Warning Installation B Do not use a defective or underrated circuit breaker Use this appliance on a dedicated circuit There is risk of fire or electric shock B For electrical work contact the dealer seller a qualified electrician or an authorized service center Do not disassemble or repair the product there is risk of fire or electric shock B Always ground the product There is risk of fire or electric shock install the panel and the cover of control box securely There is risk of fire of electric shock W
35. pin3 pin4 pin3 in fan motor connector If the value of the voltage is not in the range showing in below table the PCB must has problems and need to be replaced DC motor voltage input and output N Colo 0 i Signal Voltage 1 Red Vs Vm 280V 380V 2 m 35 m 3 Black GND OV 4 Mi Vcc 14 17 5V Yell 5 in Vsp 0 5 6V 6 Blue FG 14 17 5V 53 9 2 4 Open circuit or short circuit of temperature sensors diagnosis solution E5 E6 Check the connections between temperature sensor and main PCB No Correct the connections Are the connections good Yes Check the resistance value Replace indoor or outdoor main of the sensor via tablet Yes inte PCB and table 2 is it normal No Replace the sensor check if the problem happen again 54 9 2 5 IPM malfunction or IGBT over strong current protection diagnosis and solution PO EE Cort he connection or Compr y Yes gt replace the wires and error and if the wires and connectors connectors are broken No Y Correct the installation Check if the IPM installed correctly No gt tighten the screws and apply silicon grease Yes Y IPM continuity check Check if the Replace the IPM board or replace IPM terminal resistance values are No the main if the IPM b
36. pressor will stop and restart when 2 gt 5 0 C T2 4 C the compressor frequency will be limited and decreased to the lower level 4 C lt T2s7 C the compressor will keep the current frequency T2 gt 7 C the compressor frequency will not be limited 8 4 3 Heating Mode 8 4 3 1 Compressor running rules The maximum operation frequency of the compressor after starting submits to the following rule 14 T 7 4 34 Off 33 28 Fmax F2 27 25 24 22 21 Fmax F4 19 18 Fmax F5 E Fmax F6 16 15 14 Fmax F7 12 11 Fmax F8 6 5 Fmax F9 1 Fmax F10 If users switch on AC by remote controller the compressor will run at the Fmax frequency for 7 minutes according to outdoor ambient temp During the 7 minutes the frequency limitation is active 7 minutes later the compressor running frequency will be controlled as below 37 Tl Ts aT E 4 H 45 0 N 4 5 ow 43 5 2 G 3 0 F TE 425 PES 2 0 D Sg 1 5 16 9 Sy 1 0 EUR 40 5 NY While the zones of are corresponding to different compressor running frequency 0 as default Note When T1 Ts keeps in the same temp zone for 3 minutes the compressor will run as the below rules A E Increase the frequency to
37. rge the electricity power in capacitor Electrolytic Capacitors HIGH VOLTAGE CAUTION Connect discharge resistance 1000 40W or soldering iron plug between terminals of the electrolytic capacitor on the contrary side of the outdoor PCB Discharging position Discharging period 10 seconds or more Plug of T soldering 12 iron A Note The picture above is only for reference The plug of your side may be different Main parts check 1 Temperature sensor checking Disconnect the temperature sensor from PCB measure the resistance value with a tester SIN Tester Temperature Sensors Room temp T1 sensor Indoor coil temp T2 sensor 59 Outdoor coil temp T3 sensor Outdoor ambient temp T4 sensor Compressor discharge temp T5 sensor Measure the resistance value of each winding by using the multi meter Table 1 Some frequently used data for T1 T2 T3 and T4 sensor Temperature Resistance Value Temperature Resistance value Resistance Value Temperature C Spec Code 210032300751 210032500565 210032800540 Indoor code 220032308100 220032506380 220032805110 MS11MU 09HRFN1 MS11MU 12HRFN1 MS11MU 18HRFN1 QW QW QW Outdoor code 220037305700 220037505200 220037803940 Gidan MOC 09HFN1 QDO MOC 12HFN1 QDO MOC 18HFN1 QC4
38. se 27 6 Mounted the valve stem caps and the service port Use torque wrench to tighten the service port cap to a torque of 18N m Be sure to check for gas leakage 28 7 Operation Characteristics Temperatur Heating e Cooling operation Drying operation operation Mode Room temperature 217 C lt 30 C gt 10 0 C 50 C 15 C 50 C ee 15 C 30 C 0 C 50 C temperature For the models with low temperature cooling system CAUTION 1 If the air conditioner is used beyond the above conditions certain safety protection features may come into operation and cause the unit to operate abnormally 2 The room relative humidity should be less than 809 If the air conditioner operates beyond this figure the surface of the air conditioner may attract condensation Please set the vertical air flow louver to its maximum angle vertically to the floor and set HIGH fan mode 3 The optimum performance will be achieved during this operating temperature zone 29 8 Electronic function 8 1 Abbreviation 1 2 T3 T4 T5 Indoor room temperature Coil temperature of evaporator Coil temperature of condenser Outdoor ambient temperature Compressor discharge temperature 8 2 Display function 8 2 1 Icon explanation on indoor display board Signal receiver ION indication lamp optional function This lamp illuminates when Clean Air feature is activated
39. the higher level until to F10 F Keep the current frequency G Decrease the frequency to the lower level until to F1 H Run at F1 for 1h if T1 Ts AT gt 6 C the compressor will stop Meanwhile the compressor running frequency is limited by the current 4 Ot Decrease HEAT _ jr x Y N HHEAT N Hold Resume Y Off Compressor stops Decrease Decrease the running frequency to the lower level 38 Hold Keep the current frequency Resume No limitation for frequency Note When AC is in hold zone for 3 minutes the compressor frequency will rise to the higher level The frequency will increase twice at most 8 4 3 2 Outdoor fan running rules T4 4 1 17 h NL 15 12 i N 8 4 3 3 Indoor fan running rules Indoor fan speed can be set as high medium low silent mode or auto grade During all the fan speeds the anti cold wind function is preferential If the compressor stops caused by the room temperature rising the indoor fan will run at super breeze When the compressor is running the indoor fan is controlled as below speed H H H G oe een eee M M M Z JM M M 7 a en een 0 1 0 L L L D 39 The anti cold wind function is as below T2 44 C Setting 39 C Med 36 C 35 C Low 322 TEL1C Supper breeze TELO C Off Auto fan action
40. tion The Inverter module has a protection function about current voltage and temperature If these protections happen the corresponding code will display on indoor unit and the unit will stop working 8 3 6 Indoor fan delayed open function When the unit starts up the louver will be active immediately and the indoor fan will open 10s later If the unit runs in heating mode the indoor fan will be also controlled by anti cold wind function 8 3 7 Compressor preheating functions Preheating permitting condition If T4 outdoor ambient temperature lt 3 C and the machine connects to power supply newly or if T4 lt 3 C and compressor has stopped for over 3 hours the compressor heating cable will work Preheating mode 31 A weak current flow through the coil of compressor from the wiring terminal of the compressor then the compressor is heated without operation Preheating release condition If T4 gt 5 C or the compressor starts running the preheating function will stop 32 8 4 Operation Modes and Functions 8 4 1 Fan mode 1 Outdoor fan and compressor stop 2 Temperature setting function is disabled and no setting temperature is displayed 3 Indoor fan can be set to high med low auto 4 The louver operates same as in cooling mode b Auto fan For MS11M O9HRFN1 MWOW MS11M 12HRFN1 MVOW MS11M 18HRFN1 MUOW models T1 24 6 0 i H L O 754L 0 H L O 54 L H L O 25 L 2 5
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