XSEU-A-1202__ X on-off series for Europe Market
Contents
1. eene e Se ete pe Pe e rete pe erae di He ete 31 8 nte n ec eei ec ties 32 8 32 8 2 Display TUNEUON dineerde belie tu dn cate bole eden eedt Hd 32 8 3 Main Protection E 34 9 Tro bleshootihig u EE E DE AEE EE iecore ico co eo ioco ce eade ioco 47 9 Indoornit errorxdisplay sess Seer tree ee oe ee ees 47 9 2 Diagnosis mien 48 1 Precaution 1 1 Safety Precaution n prevent injury to the user or other people and property damage the following instructions must be followed n Incorrect operation due to ignoring instruction will cause harm or damage n Before service unit be sure to read this service manual at first 1 2 Warning y Installation n Donotuse a defective or underrated circuit breaker Use this appliance on a dedicated circuit There is risk of fire or electric shock n 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 n Always ground the product There is risk of fire or electric shock n Install the panel and the cover of control box securely There is risk of fire of electric shock n Always install a dedicated circuit and breaker Improper wiring or installation may2. 2 The Functions In The Rectangle Are Available For Particular Air condition 5 2 Outdoor Units MOA 07HN1 QC2 TO INDOOR UNIT 202035590002 171 Tissymbolimdicaes the demedis opdie actual shape shallpreval 15 MOA1 09HN1 QC2 MOA 09HN1 QC2 MOB1 12HN1 QC2 12 1 2 TO INDOOR UNIT Pressure switch scot errr reese m OVERLOAD PROTECTION CAPACTIOR PUP Ths symbol indicates the elemeit e actralshape shallprevail MOF 18HN1 QC2 E E FAIT CAPACITOR P v This symbol indicates the element is RR optional the actual shape shall prevail MOF1 21HN1 QB8W 2020380907 11 FAN2 RED __ x Jes VALVE BLACK WHITE 51 2 1 RED 5 6 RED 3 Tanen RED RED 1 2 BLUE BLUE WWE OUTDOOR CONTROL PCB coup COMPRESSOR mE CAPI COMPRESSOR RUN CAPACITOR OUTDOOR FAN CAPACITOR Fae OUTDOOR FAN 63 x TERMINAL 7 BLACK Ko MDDETERIML BLACK 1 908 ouo m T PPETENPERATURE SENSOR PTCR Rr AC CONTACTOR CURRENT INDUCTOR LL RED TRANSI TRAMSEORIER l POB SOCKETS y
3. it should be pumped 20 minutes more If 22 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 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 Outdoor unit 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 5 Discharge the refrigerant Close the valve on the charging cylinder an
4. C TE3230 C TE4 20 C for MSX 12HRN1 QC2 model 2T0032500185 TE1 31 C TE2 36 C TE3 30 C TE4 22 C for MSX 12HRN1 QC2 model 2T0032500006 TE1234 C TE2 37 C TE3230 C TE4 20 C for MSX 18HRN1 QC2 model TE1225 C TE2 32 C TE3230 C TE4 20 C for MSX 21HRN1 QB8W MSX 24HRN1 QB8W models Auto fan action T1 TS low 2 0 0 0 medium 39 When 1 gt 2 the indoor fan will run at low speed When T1 Tss0 C the indoor fan will run at medium speed 8 4 3 4 Defrosting mode For MSX 07HRN1 QC2 MSX 09HRN1 QC2 MSX 12HRN1 QC2 MSX 18HRN1 QC2 models Condition of defrosting AC will enter defrosting mode if any of the following items amp is satisfied D meets A B1 or A B2 A The cumulative compressor running time is over 42 minutes B1 The cumulative compressor running time is between 42 120 minutes Meanwhile the T2 T1 meet the below table ien High speed Medium speed Breeze off No need to compare the T2 and T1 B2 The cumulative compressor running time is over 120 minutes Meanwhile the T2 T1 meet the iud High speed below table Medium speed Breeze off No need to compare the T2 and T1 After the last defrosting the time that the outdoor fan is off but the compressor is on in high T2 protection cumulates up to 90 minutes While THperrost 14 C TMperrost 16 C 17 for MSX O7HRN1 QC2 model THperrost 15 C TMperrost 17 C TLperrost 19 C for MSX O
5. When the electronic scale displays the proper weight refer to the gauge and the pressure of the low 25 side disconnect the charge hose from the 3 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 ee p f Conner uni y Liquid m Outdoor unit b N valve N C ON Gas side ln JUL Open Af gt I H B d 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 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 1 26 6 Set the 3 wa
6. XT1 REVERSING VALVE an s IN TO INDOOR UNIT POWER SUPPLY Symbol 1 and 3 indicates the element is optional he actual shape shall be prevail Symbol 2 indicates compressor internal or external components MOF3 24HN1 QB8W WIRING DIAGRAM OUTDOOR UNIT iem oras COMPE HINC FATOR PAN m um e onn TO INDOOR UNIT 24 Symbol 1 and 3 he clement p optional 53 shpe stal Symbol 2 ind cata t compressor internal or maj corrponerts 18 6 Installation details 6 1 Wrench torque sheet for installation Outside diameter Torque Additional tightening torque mm inch N cm N cm 06 35 1 4 1500 153kgf cm 1600 163kgf cm 09 52 3 8 2500 255kgf cm 2600 265kgf cm 012 7 1 2 3500 357kgf cm 3600 367kgf cm 016 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 mm gt 3 and lt 6 gt 6 and lt 10 gt 10 and lt 16 The cable size and the current of the fuse or switch are determined by the maximum current indicated on th
7. cause fore or electric shock Usethe correctly rated breaker of fuse There is risk of fire or electric shock n Do not modify or extend the power cable There is risk of fire or electric shock n Donotinstall remove or reinstall the unit by yourself customer There is risk of fire electric shock explosion or injury n Becaution when unpacking and installing the product Sharp edges could cause injury be especially careful of the case edges and the fins on the 1 condenser and evaporator n Forinstallation always contact the dealer or an Authorized service center There is risk of fire electric shock explosion or injury n Donotinstall the product on a defective installation stand It may cause injury accident or damage to the product n Besurethe 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 n Donotlet the air conditioner run for a long time when the humidity is very high and a door or a window is left open Moisture may condense and wet or damage furniture n Take care to ensure that power cable could not be pulled out or damaged during operation There is risk of fire or electric shock n Donot place anything on the power cable There is risk of fire or electric shock n Donot plug or unplug the power supply plug during operation There is risk of fire or electric shock n
8. n Replace the all batteries in the remote control with new ones of the same type Do not mix old and mew batteries or different types of batteries There is risk of fire or explosion n Donotrecharge or disassemble the batteries Do not dispose of batteries in a fire They may burn of explode n 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 The chemical in batteries could cause burns or other health hazards The designs and information in this book are subject to change without notice for product improvement 2 Function Model Names of Indoor Outdoor Units Series Capacity Indoor units Outdoor units 7k MSX 07HRN1 QC2 MOA 07HN1 QC2 MSX 09HRN1 QC2 MOA 09HN1 QC2 MSX 09HRN1 QC2 MOA1 09HN1 QC2 ik MSX 12HRN1 QC2 MOB1 12HN1 QC2 On Off MSX 12HRN1 QC2 MOB 12HN1 QC2 18k MSX 18HRN1 QC2 MOF 18HN1 QC2 21k MSX 21HRN1 QB8W MOF1 21HN1 QB8W 24k MSX 24HRN1 QB8W MOF3 24HN1 QB8W LCD display Operation by remote controller Anti freezing control in cooling Prevent the water being frozen on evaporator by checking the evaporator pipe temperature Time Delay Safety control Indoor fan speed control Turbo wind high med low breeze Two direction air vane The unit will decide the louver direction according to operation mode Independent dehumidification The function is usually used in rai
9. 1HRN1 QB8W MSX 24HRN1 QB8W model 8 4 2 2 Outdoor fan running rules The On off outdoor units have single fan speed The outdoor fan will run following the compressor except when AC is in evaporator high temp protection in heating mode condenser high temp 36 protection in cooling mode defrosting mode and the current protection 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 and auto The auto fan Room temp Setting temp high medium 8 4 2 4 Evaporator low temperature T2 protection T2C on TE6 TE5 offe When the evaporator coil temp T2 keeps lower than TE5 for 5 minutes the compressor and outdoor fan will shut off When T2 is higher than TE6 the compressor and outdoor fan will restart up While 5 4 TE6 10 C for MSX 07HRN1 QC2 MSX 09HRN1 QC2 2T0032300007 270032300007 MSX 12HRN1 QC2 2T0032500006 5 2 TE6 7 C for MSX 09HRN1 QC2 2T0032300534 MSX 12HRN1 QC2 2T00325001 85 MSX 18HRN1 QC2 models 5 2 TE6 12 C for MSX 21HRN1 QB8W MSX 24HRN1 QB8W models 37 8 4 2 5 Condenser high temperature T3 protection only for MSX 21HRN1 QB8W MSX 24HRN1 QB8W model t TE10 TE11 When T32TE10 the compressor will shut off When lt 11 compressor will restart TE10 65 C TE11255 C 8 4 3 Heating Mode 8 4 3 1 Compressor running rules Every time the compre
10. 4 25s Compressor i 4 way valve 12 20s 4 Outdoor fan Indoor fan Ll For MSX 21HRN1 QB8W MSX 24HRN1 QB8W model Condition of defrosting 41 AC will enter defrosting mode if any of the following items is satisfied 1 When T3 TC1 C if the compressor keeps running over 45 minutes T3 TC3 C for minutes While TC1 TC3 3 C 2 After the last defrosting the time that the outdoor fan is off but the compressor is on in high T2 protection cumulates up to 90 minutes Condition of ending defrosting If any one of the following items is satisfied the defrosting will terminate and the machine will turn to normal heating mode 1 T3 rises to be higher than TC2 TC2 20 C 2 The machine has run for 10 minutes in defrosting Defrosting action i Setting defrosting time E 28 4 255 M Compressor 4 way valve 20s Outdoor fan Indoor fan 10s 8 4 3 5 High evaporator coil temp T2 protection For MSX 07HRN1 QC2 model MSX 09HRN1 QC2 MSX 12HRN1 QC2 MSX 18HRN1 QC2 models Compressor off g Outdoor fan off Compressor and outdoorfan on TE9 C While TE7263 C TE8 53 C TE9 51 C for MSX 07HRN1 QC2 model 42 TE7263 C TE8 56 C TE9 52 C for MSX O9HRN1 QC2 model TE7263 C TE8 53 C TE9 52 C for MSX 12HRN1 QC2 model TE7 63 C TE8 53 C TE9 50 C for MSX 18HRN1 QC2 model F
11. 9HRN1 QC2 model 14 TMperrost 15 C TLpergosr216 C for MSX 12HRN1 QC2 model TH DEFROST 1 7 TMberrost 1 8 TLperrost 1 9 C for MSX 18HRN1 QC2 model Condition of ending defrosting If any one of the following items is satisfied the defrosting will terminate and the machine will turn to normal heating mode 40 1 The defrosting time is reached to the setting value 2 The compressor current reaches or exceeds Iperrosr for 7 seconds 9 5 for MSX 07HRN1 QC2 model IperRost 4 5A for MSX 09HRN1 QC2 model IpecRosr 5 0A for MSX 12HRN1 QC2 model IberRost 8 5A for MSX 18HRN1 QC2 model About the setting defrosting time condition runtime minute Defrosting time minute Case 1 QDA runtimes60 DT1 Case 2 QDA 60 runtimes80 1 1 Case 3 QDA 80 runtimes95 1 2 Case 4 CA 95 lt runtimes110 DT1 3 Case 5 CA B1 110 lt runtimes120 DT1 4 Case 6 QDA B2 1 5 Case 7 Q 1 5 y From case to case 5 If case B happens before case and lasts till case A happens the setting defrosting time will be 10 minutes y If AC enter defrosting mode continuously three times from case 1 to case 5 the fourth defrosting time will be DT1 5 minutes y Atthe beginning 6 5 minutes of compressor running AC will not enter the defrosting mode Defrosting action Setting defrosting time M 255
12. Donottouch operation the product with wet hands There is risk of fire or electric shock n Donot place a heater or other appliance near the power cable There is risk of fire and electric shock n Donotallow water to run into electric parts It may cause fire failure of the product or electric shock n Donotstore or use flammable gas or combustible near the product There is risk of fire or failure of product n Donotuse the product in a tightly closed space for a long time Oxygen deficiency could occur n When flammable gas leaks turn off the gas and open a window for ventilation before turn the product on Do not use the telephone or turn switches on or off 2 There is risk of explosion or fire n If strange sounds or small or smoke comes from product Turn the breaker off or disconnect the power supply cable There is risk of electric shock or fire n 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 n Donotopen 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 n When the product is soaked flooded or submerged contact an Authorized service center There is risk of fire or electric shock n Becaution that water co
13. HANGE EVAPORATOR CONDENSER GAS SIDE N 7 RM x x EAS 3 WAY VALVE REVERSING VALVE i onl ACCUMULATOR Heating Model only 4 COOLING COMPRESSOR 4 HEATING 5 Wiring Diagram 5 1 Indoor Units MSX 07HRN1 QC2 MSX 09HRN1 QC2 MSX 12HRN1 QC2 5 18 1 2 WIRING DIAGRAM INDOOR UNIT SWITCH BOAR ANTON OUTDOOR UNIT GENERATOR ELECTRONIC HEATER POWER SUPPLY INDOOR MOTOR S BROPV OR BLACK AD LL Jc WHITE EM CX Ex L G 0R GREEN RED BLACK 185 2331 3 135 37113 M 75 MO CN5 N12 1 0N12 2 N14 1 CNI4 2 N u PIC CURRENT INDUCTOR Aen MAIN BOARD A RE i CN43 PLASMA x COMPRESSOR RELAY CN3 CN2 CNB bus 130 1212 1 2 RED BLACK 1034 1 2 1 2 2 YELLOW BLUE 244 Notes Y G I srt gy This symbol indicates the element TRANSEORNER is optional the actual shape shall e e e e e be prevail T 999 5 UNIT NOTE
14. Left rear side LG AL Right rear side refrigerant 4 Wo EM Ds refrigerant pipe hole ee ars 1 pipe hole 65 850 Figure 4 t 150mm or more from the ceiling Hooked Part 398 ra 120mm or mo from the wall 4 Gu gt de lt qu di dO M s en X 44 3 Indoor Unit Outline Figure Models W D H Fi 1 MSX 07HRN1 QC2 710 195 280 igure 3 MSX 09HRN1 QC2 Figure 2 MSX 12HRN1 QC2 790 195 265 Figure 3 MSX 18HRN1 QC2 850 225 305 MSX 21HRN1 QB8W Figure 4 998 235 322 MSX 24HRN1 QB8W 3 2 Outdoor Units More than 30cm More than 60cm Service space 77 More than 30cm IPM M ZZZZZZZZZZZZZZZZZZZZ4 More than 60cm More than 70cm Air iniet VE hr oat ets Wil Model w D H W1 A B MOA 07HN1 QC2 MOA1 09HN1 QC2 700 240 540 757 458 250 MOA 09HN1 QC2 MOB1 12HN1 QC2 780 250 540 843 549 276 MOB 12HN1 QC2 MOF 18HN1 QC2 MOF1 21HN1 QB8W 845 320 700 908 560 335 MOF3 24HN1 QB8W 11 4 Refrigerant Cycle Diagram For heat pump models INDOOR OUTDOOR 4 CHECK VALVE LIQUID SIDE Heating Model only 2 WAY VALVE V CAPILIARY TUBE HEAT HEAT EXCHANGE EXC
15. MSX 21HRN1 QB8W model lasec 26 0 Ismin 24 0A Iran 19 0 1 7 0 for MSX 24HRN1 QB8W model 8 3 4 Zero crossing detection error protection only for MSX 07HRN1 QC2 MSX 09HRN1 QC2 MSX 12HRN1 QC2 MSX 18HRN1 QC2 models If AC can not detect zero crossing signal for 4 minutes or the zero crossing signal time interval is not correct the unit will stop and the LED will display the failure The correct zero crossing signal time interval should be between 6 13ms 34 8 3 5 Indoor outdoor units communication protection only for MSX 21HRN1 QB8W MSX 24HRN1 QB8W model If the indoor units can not receive the feedback signal from the outdoor units for 2 minutes the AC will stop and display the failure 35 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 5 Auto fan T1C 8 4 2 Cooling Mode 8 4 2 1 Compressor running rules Once the compressor starts up it will follow the below rules When indoor room temp T1 is lower than Tn the compressor and outdoor fan will shut off When T1 is higher than Tm the compressor and outdoor fan will start up T1 Tm Tn Tm Ts Tn Ts 2 for MSX 07HRN1 QC2 MSX 09HRN1 QC2 MSX 12HRN1 QC2 MSX 18HRN1 QC2 models Tm Ts 1 Tn Ts for MSX 2
16. S TO OUTDOOR UNIT 1 Color Of Power Supply Cord L N E Measures To The Standards BROWN BILE Y G Or The UL Standards BLACK GREEN 2 The Functions In The Rectangle Are Available For Particular Air condition MSX 21HRN1 QB8W MSX 24HRN1 QB8W WIRING DIAGRAM CONTROL TOP AIR INDOOR UNIT SWING ANION IN LET LOUVER _ MOTOR MAIN BOARD MOTOR SHIT BOARD D QD QD 00 QD VERTICAL 1 6 f 3 sls EN 200 gl SWING MOTOR FAN CAPACITOR BOARD Cleo T i 3231 12345 1 2 12345 12345 321 12345 1 2 12345 112245 0 0 0500 ND NM ND ui B PLASAM 11 1 Ni 2 E QQ O 0 121200112 1 2 n2 Notes e 20 Tis symbol indicates he emer w B actual shape shal e prevali ENEN TRANSFORMER P E eee ele m _L INDOOR UNIT NOTES TO OUTDOOR UNIT 1 Color Of Power Supply Cord L E Measures Up To The Standards BROWN BIUE Y G Or The UL Standards BLACK WHITE GREEN
17. XSEU A 1202 Midea SERVICE MANUAL MIDEA AIRCONDITIONER EUROPE MARKET SPLIT WALL MOUNTED TYPE X ON OFF SERIES mF CONTENTS 1 Precaution 1 Mee MP D M UY E 1 2 eA 1 PAM oo PPP 6 uuu 9 sz rrr ore 9 Bie OMIA OO ELAN 11 4 Refrigerant Cycle Diagram U 12 5 Wiring Diagram U U U 13 5 1 Indoor Unis eee oen eoe ooo nn nnde 13 5 2 Ouldoor US once eene cree tiet 15 6 Installation cree 19 6 1 Wrench torque sheet for installation 19 G2 Connecting the TO OE OO QOO 19 6 3 Pipe length and the u u 20 6 4 Installation for the first time_ nennen 22 6 5 Adding the refrigerant after running the system for many 25 6 6 Re installation while the indoor unit need to be 26 6 7 Re installation while the outdoor unit need to be repaired 28 7 Operation characteristics sess cer repre ete be
18. arge 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 at a time 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 hose 6 Mounted the valve stem caps and the service port 29 Use torque wrench to tighten the service port cap to a torque of 18N m Be sure to check for gas leakage 30 7 Operation characteristics Cooling operation Heating operation Drying operation Temperature OO Coating operation Heating operation Drying operation 10 C 32 mt 10C 32C m temp 1 320 0C 30 C 170 7 C 43 C For the models with low temperature Outdoor temperature cooling system 7 C 24 C 18 52 For special tro
19. d discharge the refrigerant by loosening the flare nut on the 23 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 5 wass Indoor unit Liquid side Outdoor unit NZZ 5 way NN PZN Gas side cu T 3 NUE val El U Open lt Sama Charging cylinder g J 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 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 4 Operate the air conditioner at the cooling mode 5 Open the valves Low side o
20. e nameplate which located on the side panel of the unit Please refer to the nameplate before selecting the cable fuse and switch 6 3 Pipe length and the elevation The pipe length and refrigerant amount Model Connective pipe length Air purging Additional amount of refrigerant All Less than 5m Use vacuum pump MSX 07HRN1 QC2 MSX 09HRN1 QC2 More than 5m MSX 12HRN1 QC2 MSX 18HRN1 QC2 Use vacuum pump Pipe length 5 x 20g m MSX 21HRN1 QB8W More than 5m MSX 24HRN1 QB8W Use vacuum pump Pipe length 5 x 40g m Standard Max length Elevation B m MSX 07HRN1 QC2 MSX 09HRN1 QC2 5 8 20 MSX 12HRN1 QC2 MSX 18HRN1 QC2 MSX 21HRN1 QB8W 5 10 25 MSX 24HRN1 QB8W Indoor unit Outdoor unit 20 Indoor 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 21 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 unit
21. es follow the below step Is the fan motor connector and connection good Replace the outdoor fan motor The problem is not resolved Replace the outdoor PCB 48 9 2 2 Open or short circuit of temperature sensor diagnosis and solution Check the connections between the sensors and the PCB Are the connections good Yes i Yes Replace the sensor ang check if Replace the PCB the errors happen again 9 2 3 Over current protection occurs 4 times Check if the voltage of the power supply is too low NN ANY Repair the power supply Check if the operation condition is normal especially the outdoor unit Correct the operation condition Disconnect with the power and replace the main PCB Turn on the units and check if the problem remains Check if the Replace the compressor compressor is normal Check if the Replace the capillary is capillary blocked Evacuate the refrigerant system and recharge gas There is some air mixed inside the refrigerant system 49 9 2 4 EEPROM parameter error diagnosis and solution Shut off the power supply and turn on it 5s later The problem comes out again 15 the EEPROM chip plugged in indoor PCB well Replace the main PCB of indoor unit 9 2 5 Zero crossing detection error When such failure occurs the main control board must have fault 50 9 2 6 Indoor outdoor units communication error diagnosis and solution Power off then power o
22. fficient operation y Operational n Donotexpose the skin directly to cool air for long periods of time Do not sit in the draft This could harm to your health n 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 risk of damage or loss of property n Do not block the inlet or outlet of air flow It may cause product failure n 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 n Donottouch the metal parts of the product when removing the air filter They are very sharp There is risk of personal injury n Donotstep on or put anything on the product outdoor units There is risk of personal injury and failure of product n A 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 n Donotinsert hands or other object through air inlet or outlet while the product is 4 operated There are sharp and moving parts that could cause personal injury n Donotdrink the water drained from the product It is not sanitary could cause serious health issues n Usea firm stool or ladder when cleaning or maintaining the product Be careful and avoid personal injury
23. he machine will not stop until reaches the setting time in sleep mode 8 4 9 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 45 automatically after 3 minutes when power returns If the memorization condition is forced cooling mode the unit will run in cooling mode for 30 minutes and then turn to auto mode as 24 setting temp 46 9 Troubleshooting 9 1 Indoor unit error display For MSX 07HRN1 QC2 MSX 09HRN1 QC2 MSX 12HRN1 QC2 MSX 18HRN1 QC2 models LED Over current protection occurs 4 times The T1 sensor is open circuit or short circuit The T2 sensor is open circuit or short circuit For MSX 21HRN1 QB8W MSX 24HRN1 QB8W models LED The T2 sensor is open circuit or short circuit The T3 sensor is open circuit or short circuit Indoor outdoor units communication error 47 9 2 Diagnosis and Solution 9 2 1 Indoor fan speed out of control diagnosis and solution Shut off the power supply and turn on it 5s later The unit does not work normally Turn off the unit rotate the cross Disassemble the connection between fan Does it rotate freely the fan and the motor check if the bearing is normal If not change the bearing If y
24. ing time and then turn off automatically when reaching the setting off time 8 4 7 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 8 4 7 6 The timer function will not change the AC current operation mode Suppose users set the timer off function and AC is off now the AC will keep the current running mode and then turn off when reaching the setting time 8 4 7 7 The setting time is relative time 8 4 8 Sleep function mode 8 4 8 1 Operation time in sleep mode is 7 hours After 7 hours the AC quits this mode and turns off 8 4 8 2 Operation process in sleep mode is as follow After pressing ECONOMIC or SLEEP button on controller the machine will turn into sleep mode When cooling the setting temperature rises 1 C be lower than 30 C every one hour 2 hours later the setting temperature stops rising and indoor fan is fixed as low speed When heating the setting temperature decreases 1 C be higher than 17 C every one hour 2 hours later the setting temperature stops rising and indoor fan is fixed as low speed Anti cold wind function has the priority 8 4 8 3 Timer setting is available 8 4 8 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 t
25. ing mode if room temperature is lower than 10 C the indoor fan will run at breeze while the compressor and outdoor fan will stop and not resume until room temperature exceeds 13 C 8 4 5 3 System protection is active in this mode For MSX 21HRN1 QB8W MSX 24HRN1 QB8W models 8 4 5 4 The indoor fan will keep running at low speed 8 4 5 5 The outdoor fan compressor and all the protections are the same with cooling mode 8 4 6 Forced operation function Press the touch button continually the AC will run as below sequence Forced auto Forced cooling Off Forced cooling mode The compressor and outdoor fan keep running and the indoor fan runs at low speed After running for 30 minutes AC will turn to auto mode with 24 setting temperature Forced auto mode The action of forced auto mode is the same as normal auto mode with 24 C setting temperature When AC receives signals such as switch on switch off timer on timer off mode setting fan speed setting sleeping mode setting follow me setting it will quit the forced operation 44 The forced operation function can not be memorized if power off 8 4 7 Timer function 8 4 7 1 Timing range is 24 hours 8 4 7 2 Timer on The machine will turn on automatically when reaching the setting time 8 4 7 3 Timer off The machine will turn off automatically when reaching the setting time 8 4 7 4 Timer on off The machine will turn on automatically when reaching the sett
26. n the A C by the breaker reconnect the power wire Is the error extinguished Check the wiring on the outdoor terminal and indoor terminal following the wiring diagram Is all the connecting correctly 24V lt Vs lt 24V Vs is the voltage between S and N of outdoor unit Is the wiring to the outdoor PCB Is the wiring to the indoor PCB connecting correctly connecting correctly Change the outdoor PCB Change the indoor PCB Power on Is the error extinguished Power on Is the error extinguished after 3 minutes after 3 minutes Change the indoor PCB Change the outdoor PCB 51
27. n 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 24 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 Indoor unit Liquid side BE SZ Y Outdoor unit E Open J Gas side bu aun LS I Check valve Je e 3 way valve TU Charging cylinder L J 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 5 Open the valves Low side on the charge set and charge the system with liquid refrigerant 6
28. ny days in springtime or damp areas Air flow Direction The louver can be set at the desired position or swing up and down automatically Auto mode Temp Compensation Golden fin Optional lonizer Plasma optional Sleep mode auto control Self diag function Anti cold function Prevent the cold wind at the beginning of unit start Auto defrost Auto restart Flexible wiring connection Outdoor units Power relay control Low noise air flow system Anti rust cabinet Made from electrolytic zinc steel sheet and anti rust coated components Valve protection cover It protects the valves and prevents water from dripping 3 Dimension 3 1 Indoor Units Figure 1 1 150mm or more to ceiling Indoor unit outline Installation plate 192 120mm or 1 20mm or more to wall ig to wall ax 145 6 52 Sef Left rear side 6 Right rear side refrigerant l al refrigerant pipe hole 65 710 pipe hole 65 Figure 2 150mm or more to ceiling Indoor unit outline Installation plate 120mm or 120mm or more to wall more to wall e 45 lt gt Left rear side refrigerant 1 D m vn S E o pipe hole 65 pipe hole 65 Figure 3 1 150mm or more to ceiling Installation plate Indoor unit outline 150 120mm more to wall 120mm B more to wall wv 1
29. or MSX 21HRN1 QB8W MSX 24HRN1 QB8W models Compressor off TET Outdoor fan off TE8 15 Compressor on outdoor fan high speede While TE7 63 C TE8 54 C TE9 50 C TE15 53 C 8 4 4 Auto mode The machine will choose cooling heating or fan only mode according to AT AT T1 Ts For MSX 07HRN1 QC2 MSX 09HRN1 QC2 MSX 12HRN1 QC2 MSX 18HRN1 QC2 models AT lt 3 C Heating for cooling only models they will run at fan only mode For MSX 21HRN1 QB8W MSX 24HRN1 QB8W models ATs 1 C Heating for cooling only models they will run at fan only mode AC will run in auto mode in the below cases 1 Press the forced auto button 2 If AC is off it will run in auto mode when timer on function is active 3 After setting the mode AC will run in auto mode if the compressor keeps not running for 20 15 minutes for MSX 21HRN1 QB8W MSX 24HRN1 QB8W models 43 8 4 5 Drying mode For MSX 07HRN1 QC2 MSX 09HRN1 QC2 MSX 12HRN1 QC2 MSX 18HRN1 QC2 models 8 4 5 1 The indoor fan will run following the compressor If the compressor is on the indoor fan will run at low speed If the compressor is off the indoor fan will run at breeze Running rules Cono Indoor fan Compressor and outdoor fan 1 Ti 2 TS42 Low ON 6minutes OFF 4 minutes 2 TS lt 1 lt 16 2 Low ON 5 minutes E x Breeze OFF 5minutes Low ON 4minutes 3 1 lt TS 8 4 5 2 In dry
30. perate 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 Liquid side Outdoor unit 7 uu Y Z Gas side 7 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 the vacuum pump 5 Disconnect the charge hose from the vacuum pump 28 2 Refrigerant charging Indoor unit em rien Liquid E 5121 TOCO Gas side Se Check valve Charging cylinder V 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 ch
31. pical models 18 C 52 C For special tropical models CAUTION 1 If air conditioner is used outside of the above conditions certain safety protection features may come into operation and cause the unit to function abnormally 2 Room relative humidity less than 809 If the air conditioner operates in excess of 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 Optimum performance will be achieved within this operating temperature 31 8 Electronic function 8 1 Abbreviation T1 Indoor ambient temperature T2 Coil temperature of indoor heat exchanger T3 Coil temperature of outdoor heat exchanger T4 Outdoor ambient temperature T5 Compressor discharge temperature 8 2 Display function Icon explanation on indoor display board Signal receptor ON OFF indicator This indicator illuminates when the air conditioner is in operation PRE DEF Indicator For Cooling amp Heating models only This indicator illuminates when the air conditioner starts defrosting automatically or when the warm air control feature is activated in heating mode Auto Mode This indicator illuminates when the air conditioner is in Auto Mode Turbo indicator This indicator illuminates when the air conditioner is in turbo operation TEMPERATURE indicator Usually it displays the tempera
32. s 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 1 2 O 6 Indoor uni Liquid side Outdoor unit 1 Two way valve i valve Manifold valve cl Close M Compound meter Pressure M 20Pa gauge T Pandeli Handle Hi Charge hose Charge hose Vacuum pcm 1 pump Mc Vacuum pump 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 the meter does not indicate 0 1Mpa after pumping 30 minutes
33. ssors start up they will keep running for At minutes protections are active and then follow the below rules While At 7 When indoor room temp T1 is higher than Tj the compressor and outdoor fan will shut off When T1 is lower than Tk the compressor and outdoor fan will start up Tj Ts 6 Tk Ts 4 for MSX 07HRN1 QC2 MSX 09HRN1 QC2 MSX 12HRN1 QC2 MSX 18HRN1 QC2 models Tj Ts 3 Tk Ts 2 for MSX 21HRN1 QB8W MSX 24HRN1 QB8W models 8 4 3 2 Outdoor fan running rules The outdoor units have single fan speed The outdoor fan will run following the compressor except when AC is in evaporator high temp protection in heating mode condenser high temp protection in 38 cooling mode defrosting mode and the current protection 8 4 3 3 Indoor fan running rules When the compressor is off because off the room temperature rising or the protection the indoor fan will run at breeze When the compressor is on the indoor fan can be set to high med low auto And the anti cold wind function has the priority Anti cold wind function When evaporator coil temp T2 is getting higher T2 TE2 the indoor fan will run at setting speed TE1 T2 TE2 the indoor fan will run at low speed When T2 is getting lower TEA T2 TE3 the indoor fan will run at low speed T2 TE4 the indoor fan will shut off T24 TE4 a While TE1 28 C TE2 38 C TE3 30 C TE4 20 C for MSX 07HRN1 QC2 MSX 09HRN1 QC2 models TE1 31 C TE2 36
34. ture settings TIMER indicator This indicator illuminates when TIMER is set ON OFF da FAN SPEED indicator This indicator illuminates when change the fan speed 32 lonizer Plasma function indicator This indicator illuminates when lonizer Plasma function is on 33 8 3 Main Protection 8 3 1 Time Delay at restart for compressor 8 8 2 Fan Speed is out of control only for MSX 07HRN1 QC2 MSX 09HRN1 QC2 MSX 12HRN1 QC2 MSX 18HRN1 QC2 models When Indoor Fan Speed keeps too low or too high for certain time the unit will stop and the LED will display the failure 8 3 3 Current protection ISSEC c IFAN IRESTORE Resume A zone The current exceeds Issec for 5 seconds the compressor and outdoor fan will shut off B zone The current exceeds Ismin for 5 minutes the compressor and outdoor fan will shut off C zone The current exceeds Iran the outdoor fan will shut off if AC is in heating mode If AC is in cooling mode the indoor fan will run at low speed lasgc Is5min 6 0A Iran 5 0 IRestore 6 5A for MSX 07HRN1 QC2 model 10 0A Ismin 7 5 Iran 6 0A Ingsrong 5 0A for MSX 09HRN1 QC2 model 12 0A Ismin 8 5 Iran 7 5 Ingsrong 6 5A for MSX 12HRN1 QC2 model 19 5A lani 217 0A Iran 15 Ingsrone 13 0A for MSX 18HRN1 QC2 model 22 0 Ismin 20 0A Iran 16 0 14 0 for
35. uld not enter the product There is risk of fire electric shock or product damage n Ventilate the product from time to time when operating it together with a stove etc There is risk of fire or electric shock n Turnthe main power off when cleaning or maintaining the product There is risk of electric shock n When the product is not be used for long time disconnect the power supply plug or turn off the breaker There is risk of product damage or failure or unintended operation n care to ensure that nobody could step on or fall onto the outdoor unit This could result in personal injury and product damage y CAUTION n Always check for gas refrigerant leakage after installation or repair of product Low refrigerant levels may cause failure of product n install the drain hose to ensure that water is drained away properly A bad connection may cause water leakage n Keep level even when installing the product 3 It can avoid vibration of water leakage n Donotinstall the product where the noise or hot air from the outdoor unit could damage the neighborhoods It may cause a problem for your neighbors n Usetwo or more people to lift and transport the product Avoid personal injury n Donotinstall 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 ine
36. y 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 1 8 kgf m Be sure to check for gas leakage 2 Air purging by the refrigerant EN Indoor unit Liquid side we Em Outdoor unit 2 way valve Z 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 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 5 Discharge the refrigerant Close the valve on the charging cylinder and discharge the refrigerant by loosening the flare nut on the 27 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 o
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