SERVICE MANUAL
Contents
1. INDOOR OUTDOOR 4 CHECK VALVE LIQUID SIDE Heating Model only 4 pese 2 WAY VALVE 060600 CONDENSER E J T GAS SIDE Ge v 2 3 WAY VALVE REVERSING VALVE Heating Model only ACCUMULATOR C Jat 4 COOLING COMPRESSOR 4 HEATING 11 5 Wiring Diagram 5 1 Indoor Units WOE10C2DB8 WOE13C2DB8 WOE18C2DB8 202030190246 BROWN BLACK INDOOR MOTOR 1 2 BLUE OR WHITE SS Y G OR GREEN e EB 53 Lg T eee TRANSFORMER a CN1 POWER SUPPLY E CN12 E fou CN6 CN3 op 5S RED 4 _________ E CURRENT DETECT RED 3 ___ N 0 TO COMPRESSOR RELAY p TA gue QA 018 H RED CN16 CN7 55 22 CN14 2 P2 L CN17 e 2 PTIONA RED BLACK ll NE ses ue 3 iu Mi PLASMA 717770272 1 7 4 2 1 1 MIRCO SWITCH OPTIONAL Rod PE CONTRO2. 22 6 7 Re installation while the outdoor unit need to be repaired 24 7 Operation CharaClenisSlics dau Due E co DE Cc EN 26 8 e H 27 27 roa B Ey rere rere rent rer reer yer tery eye etter errr D ee 27 5 9 one oe a t aaro ee ee ee ree 28 84 Operation Modes FULCGIIOFES sss et e X ex Eee EE UE 29 THOUDIESNOOUING 2 OE DOS DSL 42 9 T Indoor unit eror ASDI AY __ ___ 42 9 2 Diagnosis and 44 1 Precaution 1 1 Safety Precaution B To 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 unit be sure to read this service manual at first 1 2 Warning gt Installation B not use a defective or underrated circuit breaker Use this appliance on a dedicated circuit There is risk of fire or electric shock B 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 th
3. indoor fan is breezing or stopped startdetrosting 2 Calculate from the of latest defrost evaporator high temp Protection only closes outdoor fan with the compressor still running add up to 90 minutes 2 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 The defrosting time is reached to the setting value 2 The compressor current reaches or exceeds Iperrost for 7 seconds 3 Defrosting action Setting defrosting time Compressor 4 way valve Outdoor fan Indoor fan During the defrosting mode if the machine stopped or transferred to other mode the defrosting mode will stop and all the defrosting conditions will be cleared 35 For MSR1 09HRN1 NB8 and MSR1 12HRN1 NB8 Condition of defrosting If any one of following items is satisfied defrosting will start Condition 1 Both the following conditions are satisfied A the working time of the compressor accumulates to 42 min and one continuous working time is more than 330s B Check the temperature difference between T2 and T1 Fan speed If indoor fan is in high speed and T2 T1 lt THperrosr start defrosting If indoor fan is in low speed and 2 1 lt TLperrost start defrosting If indoor fan is in medium speed and T2 T1 start defrosting Breezeorstop If indoor fan is bre
4. Forced auto gt Forced cooling Press once 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 drying mode AC will turn to auto mode for 21k 22k 24k models with 24 C setting temperature Forced auto mode The action of forced auto mode is the same as normal auto mode with 24 setting temperature e When AC receives signals such as switch on switch off timer on timer off mode setting fan opeeds setting sleeping mode setting follow me setting it will quit the forced operation e 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 setting time and 40 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 For 7k 9k 12k 16k 17k 18k 22k models 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
5. 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 23 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 f Outdoor unit s 2 Sc E j f 3 way valve E i Vacuum pump 2 4 Procedure 1 Confirm t
6. al 1 T1 CURRENTINDUCTOR __ TRANSFORMER CHICHI E Symbol 1 indicates compressor rd internal or external components FOW ER SUPPLY 2 indicates the is optional whe actual shape shal be prevail TO IMETO RUNT 14 6 Installation details 6 1 Wrench torque sheet for installation Additional Outside diameter Torque tightening torque 06 35 14 1500 1600 153kgf cm 163kgf cm 2500 2600 9 52 3 8 255kgf cm 265kgf cm 3500 3600 012 7 1 2 357kgf cm 367kgf cm 4500 4700 015 9 5 8 459kgf cm 479kgf cm 6 2 Connecting cables The power cord of connect should be selected according to the following specifications sheet Rated current of appliance Nominal cross sectional area gt 10 and lt 16 gt 16 and lt 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 6 3 Pipe length and elevation The pipe length and refrigerant amount Connective pipe Additional amount of Model Air purging length refrigerant Use vacuum All Less than 5m pump Use vacuum k 9k 12k 16k 17k 18k R22 More than 5m Pipe length 5 x30g m pump Use vacuum 24k R22 More than 5m Pipe length 5 x60g m p
7. 2 If the accumulated time of outdoor fan stopped the compressor keep working in evaporator high temperature protection mode reaches 90 minutes from the end of last defrosting mode 37 8 4 3 4 2 Defrosting time runtime minute Defrosting time minute B1 60 lt runtime lt 80 DT1 1 mes GA B At condition CD If item is satisfied before item A it would be regarded as severe frosting and the defrosting time is 10 minutes After three times continuous condition C defrost the fourth defrost time should DT1 5 minutes The air conditioner can t run on defrosting mode until the compressor has run for no less than 6 5 minutes 8 4 3 4 3 Ending condition of defrosting If one of following conditions is satisfied end the defrost and turn into heating mode A The defrost time has ended B The compressor current has reached to Iperrost or above lasting 7 seconds differs in different models 8 4 3 4 4 Defrosting Actions Defrosting time 2 Compressor 4 Way valve Outdoor fan Indoor fan 38 For 21k 24k models 1 Defrosting condition AC will enter defrosting mode if any of the following items is satisfied 1 When T3 lt TC1 if the compressor keeps running over 40 minutes and lt for minutes 2 After the last defrosting the time that
8. Tm Tn For MSR1 18CRN1 NB8 2T0032800278 MSR1 18CR NB6 MSR1 22HRN1 NB8W TmzTs Tn TS 2 For other models TmzTs 1 TnzTs 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 As high medium low auto and turbo for 24k models Auto fan in cooling mode acts as follow High 5 Medium T1 Ts 4 Low 8 4 2 4 Outdoor fan speed control MSR1 21CR NB6W MSR1 24HR NB6W MSR1 24CR NB6W models Outdoor fan and compressor start up at the same time outdoor fan stop 30s delay after the compressor stopped The outdoor fan has two speeds it s controlled by T3 as following rules High TC TD Low 30 8 4 2 5 Evaporator low temperature 12 protection Anti freezing control to indoor evaporator at cooling mode When T2 lt TE5 continuous for 5 minutes the compressor and outdoor fan will stop and restart until T2 gt TE6 for 7k 9k 12k 16k 17k 18k 22k models When T2 TE5 continuous for 4 minutes the compressor and outdoor fan will stop and restart until T2 gt TE6 for 21k 24k models 8 4 2 6 Condenser high temperature T3 protection Only for MSR1 21HR NB6W MSR1 21HR NB8W MSR1 24HR NB6W ELBR KFR70G N1Y R1R15 B8 W models Auto fan in cooling mode acts as follow T3 C Compressor on TE10 Compressor off TE1 When T32TE10 the compressor will shut off When T3 lt TE11 the compressor will restart 8 4 3 Dehumidi
9. Golden Fin O PTC Heating Belt O Self Clean O Compressor Crankcase Heater O O optional function 3 Dimension 3 1 Indoor Units WX do 150mm or more from the ceiling 1036 Hooked Part 1 n 120mm or mor 120mm or from the wall from the wall 4 eui a D WOE18C2DB8 WOE24C2DB8 1036 3 2 Outdoor Units More than 30cm a More than 60cm Service space More than 30cm ed m More than 70cm LU 11 More than 60cm HOE24C2MR83 330 595 870 523 340 4 Refrigerant Cycle Diagram Cooling only models INDOOR OUTDOOR LIQUID SIDE BOSD CAPILIARY TUBE HEAT HEAT EXCHANGE EXCHANGE EVAPORATOR CONDENSER dio EN 7 GAS SIDE COMPRESSOR Heating pump modes
10. low and auto 8 4 4 3 1 Indoor fan running rule in anti cold wind function mode When the compressor is off because off the room temperature rising or the protection the indoor fan will run as below rule for 21k 24k models 32 14 2 14 Fan N The anti cold wind function is controlled by the evaporator temperature refer the principle to the following chart C TE2 To Setting fan speed 4 Fan stop For 24k model 2 Setting fan speed 2 TE1 4 Indoor fan stop 33 8 4 4 4 Auto fan action in heating mode C T1 Ts Low Medium 8 4 4 5 High evaporator coil temp 2 protection For 7k 9k 12k 16k 17k 18k 22k models 4 Compressor off TE7 Outdoor fan off T2 9 Compressor and Outdoor fan For 21k 24k models Compressor off TET Outdoor fan off Compressor and outdo r fan off TE8 Compressor and outdoor fan on Compressor and outdoor fan on 8 4 4 6 Defrosting mode For 7k 9k 12k 16k 17k 18k models except MSR1 O9HRN1 NB8 MSR1 12HRN1 NB8 1 Defrosting condition Defrosting starts when either of the following 280 D are satisfied 34 A The compressor keeps running for 40 minutes or more B The temperature difference of evaporator and room temperature meets one of the following Fan speed Breeze
11. maximum angle vertically to the floor and set the fan to high speed 26 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 Ts Set temperature 8 2 Display function 8 2 1 Icon explanation on indoor display board Auto indicator This indicator illuminates when the air conditioner is in AUTO operation PRE DEF Indicator for heat pump models only This indicator illuminates when the air conditioner starts defrosting automatically or when the warm air control feature is activated in heating mode OPERATION indicator This indicator illuminates when the air conditioner is running Timer indicator This indicator illuminates when TIMER is set ON OFF 27 8 3 Protection 8 3 1 Time Delay at restart for compressor 8 3 2 Fan Speed is out of control Only for 7k 9k 12k 16k 17k 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 I3SEC n IRESTORE Resume zone The current exceeds lssEc for 5 second the compressor and outdoor fan will shut off For 9k 12k 17k 18k models A zone The current exceeds lssEc for second the compressor and outdoor fan will shut off For21k 2
12. multi meter Table 1 Some frequently used data for T1 T2 T3 and T4 sensor Deme De m T Too esses va 7 vos ves Table 2 Some frequently used R T data for T5 sensor Feweawe s s s s e Resistance value Temperature 90
13. running mode and then turn off when reaching the setting time For 24K models the timer function will change the AC current operation mode Suppose users set the timer off function and AC is off now the AC will turn on firstly 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 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 be higher than 17 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 the 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 mod
14. 4k models B zone The current exceeds for 5 minute 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 cooling mode the indoor fan will run at low speed While 8 3 4 Zero crossing detection error protection Only for 9k 12k 16k 17k 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 8 3 5 Indoor outdoor units communication protection only for 21k 24k models 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 28 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 For 7k 9k 12k 16k 17k 18k 22k models T1 High 29 Medium 28 25 Low For 21k 24k models T1 High 28 Medium 27 24 Low 8 4 2 Cooling Mode 8 4 2 1 Four way valve control The four way valve is closed 8 4 2 2 Compressor and outdoor fan control The action of the compressor and the outdoor fan are submitted to the following rule 29 T1
15. LLER 1 24093 4 69 3 4 OR ANION GENERATOR AIR CONDITIONER worm e eee ne 3 DISPLAY BOARD ES Ly NOTE 1 The wiring diagram is for explanation purpose only The actual shape of the components may be different 2 Symbol 1 indicates optional components 3 The Color Of cable is different according to the Standards Standards BROWN BIUE Y G UL Standards BLACK WHITE GREEN WOE24C2DB8 202030780197 Fs GENERATOR E 51 062 YU ee NN 52 XP2 This symbol indicates the element 44 CNI is optional the actual shape shall S 8 ree A le yeval RT1 __ RT2 A 1 FAN CAPACITOR 5 10 SWING SWING MOTOR ED BLUE WHITE Y G 19 9 lt lt N XT1 NOS POS Geol OUTDOOR UNIT 5 2 Outdoor Units HOE10C2MR83 HOE13C2MR83 775 This symbol indicates element optional the actual shape s hall be prevail HOE18C2MR83 INDOOR UNIT 202037740304 DUTDOOR UNIT COMPRESSOR CAPACITOR FAN CAPAC TO R HOE24C2MR83 20203 7890742 FED TRANSI 2 cw um emewm cm mmokmmmmawn m m m FED m
16. RSSA A 1211 SERVICE MANUAL WOE10C2DB8 HOE10C2MR83 WOE13C2DB8 HOE13C2MHR83 WOE18C2DB8 HOE18C2MHR83 WOE24C2DB8 HOE24C2MHR83 AIR CONDITIONER 5 1 es 1 DE 1 1 2 dile M M 6 Sc DIMENSIO 7 Scene MEME EIE EE E UE UE D 7 S e 0 0 Neu Ic uu E I E 9 4 Refrigerant Cycle Da 10 Ds Diagr anisi a 12 S 12 _____ _________ ___ ___ 13 56 Installation detallS 15 6 1 Wrench torque sheet for installation 15 6 2 COmecing Me Cables asso opt oodd de dud ddnde dandis 15 6 3 Pipe length and the 16 6 4 Installation for the first time 18 6 5 Adding the refrigerant after running the system for many years 21 6 6 Re installation while the indoor unit need to be
17. 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 anm m Indoor unit TZ Liquid side LI E E i Get T Gas side way valve Bg V Open ____ TEATRE i 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 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 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 20 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 por
18. ay 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 S AM 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 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 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
19. ctrostatic filter if the unit is so equipped There is risk of physical injury electric shock or product failure B When the product is soaked flooded or submerged 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 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 maintaining the product There is risk of electric shock B When the 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 to ensure that nobody could step on or fall onto the outdoor unit This could result in personal injury and product damage CAUTION B Always check for gas refrigerant leakage after installation or repair of product Low refrigerant levels may cause failure of product B 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 3 It can avoid vibration of water leakage B 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 B Use two or more peop
20. e Three way valve Manifold valve m Close Compound meter ES X v 7 gauge 0 1MPa a U Handle Lo Handle Hi Charge hose Charge hose JE 2 pump Vacuum pump 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 2 Connect the charge hose with the push pin of handle lo to the 3 way valves gas service port 3 Connect the charge hose of handle hi connection to the vacuum pump 4 Fully open the handle Lo of the manifold valve 18 5 Operate the vacuum pump to evacuate 6 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 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 w
21. e product There is risk of fire or electric shock B install the panel and the cover of control box securely There is risk of fire of electric shock B Always install a dedicated circuit and breaker Improper wiring or installation may cause fore or electric shock B Use the correctly rated breaker of fuse There is risk of fire or electric shock B not modify or extend the power cable There is risk of fire or electric shock B Donotinstall remove reinstall the unit by yourself customer There is risk of fire electric shock explosion or injury B caution 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 B For installation always contact the dealer an Authorized service center There is risk of fire electric shock explosion or injury Do not install the product on a defective installation stand may Cause injury accident or damage to the product B 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 B 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 Moisture may condense and wet or damage furniture B lake care to ensure that power cable could not be pulled out o
22. ezing or stopped start defrosting Condition 2 If the accumulated time of outdoor fan stopped but the compressor keep working due to evaporator high temperature protection mode reaches 90 min from the end of last defrosting mode Condition of defrosting stop If any one of following conditions occurs the defrosting will finish and the machine will turn to normal heating mode Condition 1 Reached the defrosting time Condition 2 The current of compressor is more than continuously more than 75 The value of ldefrost 5 depending on the exactly machine 36 Defrosting actions Defrost peso 4 way valve gt 235 Outdoor fan Indoor fan During the defrosting mode if the machine stopped or transferred to other mode the defrosting mode will stop and all the defrosting conditions will be cleared MSR1 22HRN1 NB8W model Defrosting starts when either of the following 080 D A and B1 or A and B2 are satisfied A The compressor keeps running for 45 minutes or more B1 The compressor keeps running for 45 120 minutes and the temperature difference of evaporator and room temperature meets one of the following TL def TM def def B2 The compressor keeps running for 120 minutes or more and the temperature difference of evaporator and room temperature meets one of the following def42 TMdef 2 def 42
23. fying mode For 7k 9k 12k 16k 17k 18k 22k models 8 4 3 1 Indoor fan speed is depended on compressor compressor starts indoor fan in low speed compressor stops indoor fan in breeze speed 8 4 3 2 The action of outdoor fan and compressor are the same is according to the room temperature and set temperature NO Compressor and outdoor fan actions Indoor fan actions 11 gt 5 2 Alternated action 2 TS T1 TS42 Alternated action 3 T1 lt TS Alternated action pli 8 4 3 3 If the room temperature decreased to lower than 10 C the compressor and outdoor fan will stop indoor fan in breeze speed If the room temperature raised to higher than 13 C recover the dehumidify mode 31 For 21k 24k models 8 4 3 4 The indoor fan will keep running at low speed 8 4 3 5 The outdoor fan compressor and all the protections are the same with cooling mode 8 4 4 Heating Mode 8 4 4 1 Four way valve control The four way valve is open except in defrosting mode 8 4 4 2 Compressor and outdoor fan running rules Once the compressor starts up it will follow the below rules 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 1 Tj Ts Tc TS 1 Tj Ts Tc Tk TS Tc 2 for MSR1 22HRN1 NB8W model 8 4 4 3 Indoor fan running rules Indoor fan speed can be selected in high medium
24. h 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 25 conditioner before disconnecting the hose 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 7 Operation characteristics Temperature Heating Cooling operation Drying operation operation 10 C 32 C lt 21000Btu h models 17 C 32 C 221000Btu h models 11 43 lt 21000Btu h models Room temperature 17 C 32 C 0 C 30 C 18 C 43 C 5 43 C 18 43 C 221000Btu h models Outdoor temperature For the models with low temperature cooling system 21 C 52 C 21 C 52 C For special tropical models For special tropical models CAUTION 1 If air conditioner is used beyond the above conditions the certain protections may action 2 Room relative humidity should be less than 80 If the air conditioner operates in excess of this value the surface of the air conditioner may attract condensation water In this case please set the vertical air louver to its
25. hat 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 1 4 Close the valve Low side on the charge set turn off the vacuum pump and confirm that the gauge 24 needle does not move approximately 5 minutes after turning off the vacuum pump 5 Disconnect the charge hose from the vacuum pump 2 Refrigerant charging Outdoor unit JUAN Gas side 4 il 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 at a time approximately 150g eac
26. lace indoor main PCB 48 9 2 6 Indoor outdoor units communication error diagnosis and solution Power off then turn on the unit 5 seconds later reconnect the power 15 the error still displaying after several minutes Yes v 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 v Measure Vs is it moving alternately between positive value and negative value Vs is the voltage between 5 and of outdoor unit Yes v Is the wiring to the indoor main PCB connected correctly v Is the wiring to the outdoor main PCB connected correctly Yes Yes Y Y Change the outdoor main PCB Change the indoor main PCB Power on Is the error extinguished Power on Is the error extinguished v v Change the indoor main PCB Change the outdoor main PCB 49 Main parts check 1 Temperature sensor checking Disconnect the temperature sensor from PCB measure the resistance value with a tester Tester Temperature Sensors Room temp T1 sensor Indoor coil temp T2 sensor 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
27. le to lift and transport the product Avoid personal injury B Donot 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 Operational B Do not expose the skin directly to cool air for long periods of time Do not sit in the draft This could harm to your health B Do not use product for special purposes such as preserving foods works of art etc is a consumer air conditioner not a precision refrigerant system There is risk of damage or loss of property B Do not block the inlet or outlet of air flow It may cause product failure B Usea 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 B Do not touch the metal parts of the product when removing the air filter They are very sharp There is risk of personal injury Do not step on or put anything on the product outdoor units There is risk of personal injury and failure of product B 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 object through air inlet or outlet while the produc
28. n PCB The malfunction is solved Yes 44 Index 1 1 Indoor AC Fan Motor Measure the resistance value of each winding by using the tester Input Terminal Red 1 2 White White 3 For the definite value of the fan motor please contact with the technical engineer Index2 1 Indoor AC Fan Motor Power on and set the unit running in fan mode at high fan speed After running for 15 seconds measure the voltage of pin1 and pin2 If the value of the voltage is less than 100V 208 240V power supply or 50V 115V power supply the PCB must has problems and need to be replaced Input Terminal Red 1 2 White 3 45 9 2 2 Open circuit or short circuit of temperature sensor diagnosis and solution between temperature sensor and main PCB Are the connections good Yes Check the resistance value Replace indoor outdoor main of the sensor table Yes gt and table 2 is it normal No check if the problem happen again Check the connections No Correct the connections 46 9 2 3 Over current protection occurs 4 times diagnosis and solution Check if the voltage of the power supply is too low No Y Is the outdoor operation temperature too high Does the o
29. or is open circuit or short X X X M P circuit except 24K Indoor outdoor units communication error O X off x Clash MSR1 18CRN1 NB8 2T0032800278 MSR1 18CR NB6 models Display Failure __ EEPROM error The T1 sensor is open circuit or short circuit The T2 sensor is open circuit or short circuit For MSR1 22HRN1 NB8W model EEPROM error Indoor room temp sensor is open circuit or short circuit Evaporator temp sensor is open circuit or short circuit X x flash 43 9 2 Diagnosis and Solution 9 2 1 Indoor fan speed has been out of control diagnosis and solution Shut off the power supply and turn it on 5 seconds later Is it still displaying the error code ve Shut off power supply rotate the fan by hand Does it rotate properly Yes Check m wires of fan motor Are all the good ve Check the fan motor is normal through index 17 Yes gt The unit operates normally Find out the cause and have it solved For example check No whether the fan is blocked or the bearing is broken No Correct the connections If the Check whether the main PCB is normal through index 27 No No Replace the fan motor malfunction is still existing replace the 1 main PCB No Replace the mai
30. r damaged during operation There is risk of fire or electric shock B 4 Donot place anything on the power cable There is risk of fire or electric shock B Donot 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 There is risk of fire or electric shock B Do not place a heater or other appliance near the power cable There is risk of fire and electric shock B Do not allow water to run into electric parts It may cause fire failure of the product or electric shock B 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 a tightly closed space for a long time Oxygen deficiency could occur B 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 B 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 B 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 Donot open the inlet grill of the product during operation Do not touch the ele
31. t 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 eL Outdoor unit J e N F N Gas side c 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 22 4 Set 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 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 5 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 _ Outdoor unit N PZN Gas side M Charging cylinder
32. t 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 NF 1 ae I a Qutdoor unit or 2 way f j S P um Gas side te HANE pe fs valve e i d ry Charging cylinder X 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 21 5 Open the valves Low side on the charge 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 5 service port immediately and turn off the air conditioner before disconnecting the hose 7 Mount the valve stem caps and the service por
33. t is 4 operated There are sharp and moving parts that could cause personal injury B Do not drink the water drained from the product lt is not sanitary could cause serious health issues B Use a firm stool or ladder when cleaning or maintaining the product Be careful and avoid personal injury B 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 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 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 18k WOE18C2DB8 HOE18C2MR83 24k WOE24C2DB8 HOE24C2MR83 12k WOE13C2DB8 HOE13C2MR83 Filter Killer of Formaldehyde lonizer O Silver Ico Filter O Follow Vitamin C Filter O Self diag function 3M HAM Filter O Anti rust cabinet Bio Filter O Valve protection cover
34. the outdoor fan is off but the compressor is on in high T2 protection cumulates up to 90 minutes 2 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 13 rises to be higher than TC2 2 The machine has run for 10 minutes in defrosting 3 Defrosting action setting defrosting time Compressor 4 way valve Outdoor fan 8 4 5 Auto mode This mode can be chosen by remote controller and the setting temperature can be changed between 17 30 In auto mode the machine will choose cooling heating or fan only mode according to the difference between 1 and Ts For MSR1 18CR NB6 MSR1 22HRN1 NB8W models 179220 3 sT1 Tsst2 T1 Ts 3 C Heating For cooling only model it will run at Fan only mode 39 For other models T1 Ts lt 1 C Heating For cooling only model it will run at Fan only mode 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 heating and cooling the compressor will keep stopping for 15 minutes and then choose mode according to 11 15 again If the setting temperature is modified the machine will choose running function again 8 4 6 Forced operation function Press the touch button continually the AC will run as below sequence First press Press once
35. ule 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 minutes and then turn to drying mode auto mode for 21k 24k models as 24 setting temp 41 9 Troubleshooting 9 1 Indoor unit error display For 7k 9k 12k 16k 17k 18k models Indoor fan speed has been out of control The 11 T2 sensor is open circuit or short circuit Over current protection occurs 4 times except X X MSR1 07HR NB4 A MSR1 09HR NB4 A MSR1 12CR NB4 270032500152 __ _ EEPROM error Zero crossing detection error For MSR1 09HRN1 NB8 and MSR1 12HRN1 NB8 models LED STATUS EEPROM error Zero crossing detection error Indoor fan speed has been out of control EE Over current protection of the compressor occurs 4 times Open circuit or short circuit of indoor room temperature sensor Evaporator temperature sensor open circuit or short circuit For 21k 24k ELBR KFR70G N1 Y R1R15 B8 W models Defrosting Operatio lamp only for Failure heat pump models Over current protection occurs 4 times The T2 sensor is open circuit or short circuit The T1 sensor is open circuit or short circuit 42 The sens
36. ump Use vacuum 9k 12k 18k 22k R410a More than 5m Pipe length 5 x20g m pump Use vacuum 24k R410a More than 5m Pipe length 5 x40g m pump Max Standard length Elevation m Indoor unit Indoor unit Oil trap t Outdoor 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 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 Indoor unit side Outdoor unit Nu Close Gas sid
37. utdoor unit has bad air circulation Check if the outdoor Yes Repair the power supply Yes Correct the operation condition Correct the connection of fan motor or replace the fan motor fan can run properly no Yes Disconnect with power and replace the main PCB Yes Turn on the units and check if the problem remains Check if the compressor is normal running Yes v Replace the capillary Evacuate the system and recharge refrigerant 47 Replace the compressor 9 2 4 EEPROM parameter error diagnosis and solution Shut off the power supply and turn it on 5 seconds later Is it still displaying the error code Yes Y If the EEPROM chip 15 welded on main PCB replace the main PCB directly Otherwise check gt 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 9 2 5 Zero crossing detection error diagnosis and solution Check if the connections and No 4 Correct the connections on power supply is normal unit when the power supply is good Yes Indoor main PCB is defective Rep
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