MSV1-09HRDN1 MSV1-12HRDN1
Contents
1. m 26 11 6 Heal MOE T 26 11 7 Defrosting operation Available for heating 27 11 8 Outdoor low temperature protection optional 28 11 9 Autoimalc operallor MOJE a 28 TEI IE E eI UU MITT 28 Titi a Pais aeo edu cur etin eden 28 Sleep 01 018 PECES 28 AUO restart enteren Det tuni dorfo b n Rt Pa S Rt 29 sentados edet da educata ha tabes sumet cn ter 29 12 JMoadel nd Paramelers nire d ius 30 192 Troubleshooting ee 31 13 1 Indoor Unit Error DISplay 3 deccm iet t evade peche tl M ec 31 13 2 EE I I 36 13 3 Resetting phenomenon often occurs during operation 38 13 4 Operation lamp flashes and Timer lamp 38 13 5 Operation lamp flashes and Timer lamp on 38 13 6 Operation lamp off and Timer lamp flashes 39 13 7 Operation lamp on and Timer lamp flashes 39 13 8 Operation lamp flashes Timer lamp 39 14 Characteristic of temperature sensor 22. 37 Service manual 13 3 Resetting phenomenon often occurs during operation That is automatically entering to the status when power is on The reason is that the instantaneous voltage of main chip is less than 4 5V Check according to the following procedure Resetting phenomenon often occurs during operation Yes After changing indoor PCB check if the failure realease 71 Yes 4 Indoor PCB is defective After changing indoor fan motor check if the failure realease YES l Power supply circuit has problems 13 4 Operation lamp flashes and Timer lamp off 38 Service manual 13 6 Operation lamp off and Timer lamp flashes Operation lamp off and Timer lamp flashes After changing the main control board check if the failure realease Indoor PCB is defective The voltage of power supply is too low less than 187V No Outdoor unit fault such as the compressor Power supply fault 13 7 Operation lamp on and Timer lamp flashes EEROM error indoor PCB is defective 13 8 Operation lamp flashes Timer lamp flashes This is alarm signal when the main chip can t detect over zero signal When such failure occurs main control board must have fault 39 Service manual 14 Characteristic of temperature sensor 9 5779 8 13918 45 426 8 5654 779 13 46 4059 7 3 8867 3 7348 3 5896 3 451
3. 11 1 40 Service manual 1 1 1 Safety Precaution B To prevent injury to the user or other people and property damage the following instructions must be followed B Incorrect operation due to ignoring instruction will cause harm or damage Before service unit be sure to read this service manual at first 1 2 Warning gt Installation Do not use a defective or underrated circuit breaker Use this appliance on a dedicated circuit There is risk of fire or electric shock 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 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 Use the 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 Be caution when unpacking and installing the product Sharp edges could cause injury be especially careful of the case edges and the fins on the c
4. 30 0 29 0 2180 330 34 0 33 5 2 2026 340 33 0 31 0 22C 325 31 5 310 21 Service manual 10 Capacity table 10 1 MSV1 O9HRDN1 COOLING 1221 OUTDOOR TEMPERATURE DRY ave ae ave oo Total capacity kW 3 00 2 60 2 34 Input kW 0 701 0 72 0 80 0 86 0 89 0 98 1 16 InputkW 0 72 0 73 0 82 0 90 0 92 1 01 1 17 0 75 0 78 0 85 0 76 0 96 1 04 119 HEATING OUTDOOR CONDITIONS HEATING ON 6 C W 3 CW 1 CW 6 C W 8 C W 16 C W Capacity KW IputkW 096 155 158 160 152 140 138 132 InputkW 0 99 169 169 170 161 150 148 140 10 2 gt MSV1 12HRDN1 COOLING OUTDOOR TEMPERATURE DRY DE En 1 21 Di CN 22 Service manual HEATING OUTDOOR CONDITIONS EE 12 7 5 7 CD D boss D 2 2 en Conditions Input kW 1 568 2 07 2 20 2 09 2 01 1 99 1 80 1 76 ge Capacity kw 4801 6 09 5 58 502 439 410 359 327 Input kW 1 6 2 18 2 39 2 20 2 16 2 09 1 83 1 81 20 C 1658 221 111 235 227 215 199 1 92 2516 Capacity kW 4 387 23 Service manual 11 Electronic function 11 1 Display board T
5. Band Weis Outdoor fan motor mp 3 3 i8 Refrigerant piping Compressor N Note The noise date is base on hemi anechoic chamber during actual operation these values are normally somewhat different as a result of ambient condition The above design and specifications are subject to change without prior notice for product improvement Service manual 5 Refrigerant cycle diagram INDOOR UNIT OUTDOOR UNIT CHECK VALVE C ACCUMU VALVE LATOR de Heating Model Only COMPRESSOR COOLING HEATING LIQUID SIDE Heating Model only nl 4 nen 2 WAY VALVE on CAPILLARY TUBE EVAPORATOR CONDENSER 4 met GASSDE gh Service manual 6 Operation limits 6 1 Cooling operation Outdoor unit air temp DB Cooling Indoor air temp DB Note The chart is the result from the continuous operation under constant air temperature conditions However excludes the initial pull down stage 6 2 Heating operation Indoor air temp DB Outdoor unit air temp DB Note The chart is the result from the continuous operation under constant air temperature conditions However excludes the initial pull down stage Service manual 7 Schematic diagram
6. in be 1 FAN 2 l 20 m 20 0270 CH314 CNS1 FG 120EO 1W 2 37 ERO RTL DE 0520 4 107 2528 BRO 25 vor Dold 1505 DL 05747 RTI OESO 25 250 025 H302 RTHIEDUIISW ay Red 2 FEL RT14 LEO 2910 FP ed CC 0 uF 53V RSL LER 0 287 Service manual 7 1 4 Outdoor power PCB 12 UB 100 0279 1 R713 0 25W 1 UMA 140 0291 1 RTIA 10059 02519 gt 2 m m u mji 5 5 gt m E 1 5 5 0 C707 100 0 290 A 25 VG ERIO LIT R707 102 025W ien 000000 c M 0 022uF 63V 7717 VG CM 16 CN701 4700pF 63 T wo uw ENE 1000pF 63V 7 CNS CHI CNE Cm CNI MKP61 0 22uF 275V R706 001507 O LuF 63V 4 7KQ 0 25W 74HC04 4700 25 C703 0102 6370 4700 25 0 luF 63V Service manual 7 2 Wiring diagram 7 2 1 MSV1 O9HRDN1 MSV1 12HRDN1 100 2mm INDOOR WIRING DIAGRAM eeens DOOR STEP MOTOR IONIZER 8 BLUE 4 EE re eomm 5 peg L
7. 1 Connect the vacuum pump to the charge set s centre hose 2 Evacuation for approximately one hour Confirm that the gauge needle has moved toward 0 1 Mpa 76 cmHg vacuum of 4 mmHg or less 3 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 4 Disconnect the charge hose from the vacuum pump Vacuum pump oil if the vacuum pump oil becomes dirty or depleted replenish as needle Service manual 8 9 Gas charging X vr LL Indoor uni TZAN Liquid side LI L uzi x Gas side NUEZZ Check valve Charging cylinder Procedure 1 Connect the charge hose to the charging cylinder Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder 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 Open the valves Low side on the charge set and charge the system with liquid refrigerant f the system cannot be charge with the specified amount of refrigerant if can be charged with a little at a time approximately 150g each timeO while operating the air conditioner in the cooling cycle however one time is not sufficient wait approximately 1 minute and then repeat t
8. 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 Service manual 8 7 Balance refrigerant of the 2 way 3 way valves Indoor unit ZB Liquid side Outdoor unit RUN E T CLOSE Procedure 1 Confirm that both the 2 way and 3 way valves are set to the open position 2 Connect the charge set to the 3 way valve s service port eave the valve on the charge set closed Connect the charge hose with the push pin to the service port 3 Open the valves Low side on the charge set and discharge the refrigerant until the gauge indicates 0 05 to 0 1 Mpa f there is no air in the refrigeration cycle the pressure when the air conditioner is not running is higher than 0 1Mpa discharge the refrigerant until the gauge indicates 0 05 to 0 1 Mpa If this is the case it will not be necessary to apply a evacuation Discharge the refrigeration gradually if it is discharged too suddenly the refrigeration oil sill be discharged Service manual 8 8 Evacuation Outdoor unit 3 Vacuum pump Procedure
9. When the power supply is interrupted and then restore the air conditioners automatically restore the previous function setting Flexible wiring connection DSP High speed Chip Driving heating at 15 Service manual Outdoor unit Power relay control The unit has 3 mins delay between continuously ON OFF operations Low noise air flow system Bird tail propeller fan makes the outdoor unit run more quietly Hydrophilic aluminum fin The hydrophilic fin can improve the heating efficiency at operation mode 4 way valve control It is only operated in the heating operation mode except defrosting operation 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 Discharge pipe temperature protect Service manual 3 Dimension 3 1 Indoor unit Vertu 3 2 Outdoor unit Vertu Service manual 4 Specification NE EN 2 nn 810 330 1550 Staring current Node 090622 DASXICZSEZ _ _ Band _ pu We 1 680 Ratedouren RLA LocedroorAmpLRA Thermal protector 1 370 Mod FPD Band Wem ndoorfanmotor input WT EG
10. Room temp down 11 4 4 NN control to indoor evaporator at cooling mode T evaporator temp Compressor deme lt lt 4 a frequency of compressor T lt 0C 11 4 5 Current protection 14 5 lt 1 lt 18 Decrease frequency of 5 1 lt 120 Current down MSH 18HRIN1 1 gt 17 5 14 0A 1 17 5A Decrease frequency of 1 lt 11 5 11 4 6 Rated capacity test Set mode to cooling mode 25 Service manual Set temp to 17 Set fan speed to high speed Push turbo button 5 times in 10 seconds Using special remoter controller After 5 hours cancel rated capacity test Turbo function Increasing frequency of compressor After operating 30 minutes return automatically to the mode and temp previously selected 11 5 Dehumidifying mode 11 5 1 The 4 way valve is off 11 5 2 The indoor fan is fixed in breeze speed 11 5 3 Compressor run in low frequency 11 5 4 Low room temperature protection 11 5 5 When room temperature decreases to below 10 compressor and outdoor fan will stop indoor fan is Breeze Dehumidifying operation will be resumed when room temperature restores to over 12 C 11 5 6 At dehumidifying mode the anti freezing function of the indoor heat exchanger is the same as that of cooling mode 11 6 Heating mode 11 6 1 Generally the 4 way valve is open at heating mode but it is closed at defrosting 4 way valve must delay 2 minutes compared with compress
11. before the power failure when power returns 11 14 Turbo function The indoor fan will work in super high speed the frequency of compressor will increase the max run time is 30 minutes After 30 minutes the unit will work in previous setting 29 12 Model and Parameters PRATIFC 60 5 SLEEPTIMC 70 2 10 0 110 ANGLHEATMAX 18 PANGLHEAT 27 53 0 10 _ANGLCOOLMIN 4160 _PDELAYCOUNT 12 O o 45 V2 30 Service manual MSC 12HRDN1 MSH 09HRDN1 MSH 12HRDN1 Service manual 13 Troubleshooting 13 1 Indoor Unit Error Displa EEPROMeror OOOO Et Indoor outdoor units communication protection zeroorosngexaminatoneror SSCS Es Fanspeedbeyondcontol SSCS Es Openorshotoreutofoudoorismperauresenor Es Room temperature or evaporator temperature sensor open short cirouitof Po or too low voltage protection P2 compressortop protection against temperature Pa 1 Inverter compressor drive error Note E4 Reserved function EO 1 2 5 4 2 P3 4 19 Display LED STATUS EEPROM parameter error Circuit or software error on indoor control board Replace the control board of indoor 13 1 2 circuit or software error on indoor cortrol board Display LED STATUS Indoor outdoor units communication protection 31 Service manual Disconnect th
12. connector good yes No Replace the sensor If display E6 all the same replace outdoor main 13 1 7 Display LED STATUS Module protection 33 Service manual Is connection to connector good O Is the wires to compressor right Yes Yes Check the voltage between P and N on inverter module Is it about 380 No Yes Test the outdoor power supply board again Check the inverter module some component cracked or damaged Yes Inverter module damaged replace it Is it breakdown between P N P U P V N W N U N V At inverter module No Check compressor 13 1 8 Display LED STATUS Over voltage or too low voltage protection Yes Inverter module is defective Is the power supply right Check the outdoor power board Replace outdoor main PCB 13 19 Display LED STATUS Compressor top protection against temperature 115 100 C NO 34 Service manual Does compressor operate No Yes Is the connection good No Is refrigerant circulation volume normal No Yes Connect and test again 15 protector normal No Yes Replace protector Check the outdoor main PCB Gas charging 15 abnormality the same after gas charging Check refrigerant system such as clogging of the outdoor PCB 13 1 10 Display LED STATUS Outdoor low temp protection This is optional factory standard unit has
13. is risk of product damage or failure or unintended operation 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 Always check for gas refrigerant leakage after installation or repair of product Low refrigerant levels may cause failure of product E Install the drain hose to ensure that water is drained away properly bad connection may cause water leakage Keep level even when installing the product To 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 people to lift and transport the product Avoid personal injury 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 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 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 Do not block the inlet or outlet of air flow
14. of the batteries have leaked The chemical in batteries could cause burns or other health hazards 2 Service manual Function Operation ON OFF by remote controller Sensing by room temperature Room temperature sensor Pipe temperature sensor Room temperature control Maintain the room temperature in accordance with the setting temperature Anti freezing control in cooling Prevent the water being freezed on evaporator by sensing the evaporator pipe temperature in cooling mode Time Delay Safety control Restarting is for approx 3 minutes 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 Sleep mode auto control fan is turn to low speed cooling heating The unit will be turn off at the seventh hour Independent dehumidification The function is usually used in rainy days in springtime or damp areas Air flow Direction control The louver can be set at the desired position or swing up and down automatically Auto mode The mode can be change by the room temperature Temp Compensation Work voltage 160v 253v High efficiency 3096 Tele Remote control Optional Self diag function Anti cold function Prevent the cold wind at the beginning of unit start Plasma Optional The function will be operated in any operation mode Auto defrost Auto restart function
15. 1 11 Timer Function 11 11 1 The maximum length of timer is 24 hours and the minimum resolving power is 15 minutes 11 11 2 Timer on first turn off the A C the A C will be automatically on at the set time 11 11 3 Timer off first turn on the A C the A C will be automatically off at the set time 11 11 4 Timer on off function on time is earlier than off time first turn off the A C it will be automatically on at set time and later be off at the set time then unit turns on at set time 11 11 5 Timer off on function off time is earlier than on time first turn on the it will be automatically off at set time and later be on at the set time then unit turns off at set time 11 12 Sleep mode 11 12 1 It is available at cooling heating or auto mode 11 12 2 Cooling The set temperature rise 1 per hour Two hours later the set temperature will maintain as a constant and the fan speed is kept at low speed 28 Service manual 11 12 3 Heating The set temperature decrease 1 per hour Two hours later the set temperature will maintain as a constant and the air circulation is kept at low speed Cold air proof function takes precedence over all 11 12 4 Auto The Sleep Mode running function operates in accordance with selected running mode by auto mode 11 12 5 After 7 hours unit cancels this modes automatically 11 13 Auto restart function In case of a sudden power failure this function automatically sets the unit to previous settings
16. 11 7 Defrosting operation Available for heating only 11 7 1 Defrosting condition 11 7 1 1 When outdoor temp is more than OC Defrosting starts when meeting one of the following conditions a The temperature of outdoor heat exchanger remains consecutively lower than 3 c for more than 40 minutes and the temperature remains consecutively 4 c for more than 3 minutes b The temperature of outdoor heat exchanger remains consecutively lower than 3 c for more than 80 minutes and the temperature remains consecutively 2 c for more than 3 minutes 11 7 1 2 When outdoor temp is less than 0 Defrosting starts when meeting one of the following conditions a The temperature of outdoor heat exchanger remains consecutively lower than 3 c for more than 40 minutes and the temperature remains consecutively 6 c for more than 3 minutes b The temperature of outdoor heat exchanger remains consecutively lower than 3 c for more than 40 minutes and the temperature remains consecutively 6 c for more than 3 minutes The temperature of indoor unit pipe decreases 5 than before 11 7 1 3 temperature of outdoor heat exchanger remains consecutively lower than 3 c for more than 120 minutes and the temperature remains consecutively 2 c for more than 3 minutes 11 7 2 Ending condition of defrosting If one of following conditions is satisfied end the defrost and turn into heating mode a The defrost time has reached to 10 minutes b When t
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18. 8 2 Connecing Ne 14 8 3 Fipe lerigtn arid the CleVatlON uxo e 14 8 4 Air purging of the piping and 15 8 5 Pumping down Re installation 16 8 6 Real 6 Istallatlor serene eeen E 17 8 7 Balance refrigerant of the 2 way 3 way 18 8 8 oe 19 8 9 GSM T 20 590 a een eee 21 9 1 MSM ert odds 21 9 2 IN ane es decom ane 21 22 10 1 E 22 10 2 SE Galois he 22 24 11 1 514978121 24 11 2 T eee 25 11 3 mage com TERT 25 11 4 ME NE 25 11 5 MUTUGIFY HAG VOCS
19. AS LIQUID 3 8 9 52 1 4 6 6 35 memo 1 4 6 35 1 2 12 7 18K 28K 5 8 15 88 1 4 6 35 518 15 88 3 8 9 52 Indoor unit E In case that 5 Oil trap Outdoor unit 4 Outdoor unit Caution Capacity is base on standard length and maximum allowance length is base of reliability Oil trap should be install per 5 7 meters Service manual 8 4 Air purging of the piping and indoor unit Required tools Hexagonal wrench adjustable wrench torque wrenches wrench to hold the joints and gas leak detector Note The air in the indoor unit and in the piping must purged If air remains in the refrigeration piping it will affect the compressor reduce the cooling capacity and could lead to a malfunction of unit Be sure using a torque wrench to tighten the service port cap after using the service port so that it prevents the gas leakage from the refrigeration cycle Procedure 6 Set the 3 way valve to the opened 1 Recheck the piping connections position 2 Open the valve stem of the 2 way valve 7 Mounted the valve stem nuts to the 2 way counterclockwise approximately 90 wait and 3 way valves 10 seconds and then set it to closed 8 Check for gas leakage position At this time especially check for gas leakage Be sure to use a hexagonal wrench to operate from the 2 way and 3 way stem nuts and the valve stem from th
20. Cover Http www mideaaircon com idea Service manual Room airconditioner Split Wall Mounted MSV1 12HRDN1 NOTE Before servicing the unit please read this at first Always contact with your service center if meet problem 10 11 Content PreCaUON e deleted 1 1 1 P recallloli 1 1 2 WY ONIO 1 eure me 5 3 1 lero Kcd T 5 3 2 outdoor unit 5 eneen 0023 022 022 0 2 100 6 Heinigerant Cycle SEIL 7 Operation IImils 29 0 299 0 211 082 0010 20 099 eI I 8 6 1 Coole Me RE ETE LIPPE 8 6 2 Heating 8 Schematic diagram and Wiring 9 7 1 m ee 9 7 2 nme be EE 13 Installation details OREERT 14 8 1 Wrench torque sheet for installation 14
21. It may cause product failure 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 There is risk of personal injury Do not step on pr 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 Do not insert hands or other object through air inlet or outlet while the product is operated There are sharp and moving parts that could cause personal injury B Do not drink the water drained from the product It is not sanitary could cause serious health issues B Use a firm stool or ladder when cleaning maintaining the product Be careful and avoid personal injury 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 Do not recharge or disassemble the batteries Do not dispose of batteries in a fire They may burn of explode E If the liquid from the batteries gets onto your skin or clothes wash it well with clean water Do not use the remote
22. OUVER MOTOR CN6 2 ONS CN11 0 14 RED INDOOR ROOM TEMP SENSOR OLP TEMP SENSORL RED 2 N Ded 1 PIPE TEMP SENSOR JX LS 3 LNs 4 OND 1 LS CN7 CN4 3 7 V di E OUTDOOR UNIT 1 TRANSFORMER SWITCH BOARD DISPLAY BOARD 97 1mm 7 a a l OUTDOOR WIRING DIAGRAM Y G COMPRESSOR 4 WAY OUTDOOR i E NEAN i i x z L505 5 13 CN5 10 _ gt JU CN511 Y G CN504 S ee TERMINAL I 08502 1 OUTDOOR YELLO CN515 E cN505 MAIN PCB BLUE ERE CN507 CN501Q Lj ess as HEAT EXCHANGER SENSOR BLACK A Boe 1 4 INDUCT ANCE E LNSO 22 T wr AMBIENT SENSOR INDOOR UNIT l 13 Service manual 8 Installation details 8 1 Wrench torque sheet for installation Outside diameter mm mh 6 35 sos 8 wos a 8 2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet 8 3 i i Additional Elevation Elevation refrigerant Btu h G
23. aba aba ala I i y eO Fu 11 1 1 OPERATION indicator This indicator flashes after power is on and illuminates when the unit is in operation 11 1 2 AUTO indicator This indicator illuminates when the air conditioner is in AUTO operation 11 1 3 TIMER indicator This indicator illuminates when TIMER is set ON OFF on CLEAN AIR indication lamp Lights up when CLEAN AIR feature is activated and lonizer can generate abundant anions to fill the room with refreshing and natural air 11 1 5 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 11 1 6 2 TURBO indication lamp Lights up when select TURBO function on cooling operation or on heating operation 11 1 7 FREQUENCY indicator This indicator appears only when the compressor is in operation and indicates the current operating frequency 11 1 8 88 TEMPERATURE indicator Usually it displays the temperature settings When change the setting temperature this indicator begins to flash and stops 20 seconds later It displays the room temperature when the air conditioner is in FAN only operation When the unit stops operation it returns to original factory settings Displays the malfunction code or protection code 11 1 9 3 3 amp 3 FAN SPEED indication lamp Displays the selected
24. and Wiring diagram 7 1 Schematic diagram 7 1 1 Display board 47 SEGIO wy mug 5 DISPLAY COM IC 16218 104 100uF 1 Service manual 7 1 2 Indoor main PCB L ARNE ADA ASW IGK Bik Balk MARAT ARLES ARROZ n NAR BORE IES sham EE MANURE ZERE D FENIE BHAN CHII ay 5 DISPLAY 19 3VAC 300mA i ne 1 10 5 600mA 7 COMMUNICATE CIRCUIT 10 7 1 3 Outdoor PCB A MET SSPAT2MT 252417 Que 6 MAH XJ X3 WE coa OCL H a GU CTTENT24TIM Y 6 4 qnt 2508013 I ATMO 25W 3 RT 14 1000 25 ME W ET H 1002 0 259 N n RT 14 1000 250 5512 EE 100050 257 CONTROL RT 4 1 E0250 11 Service manual bala 1448 RT 14 1020 bursa CC1 15pF 437 CX PG C35 CELD JuF 53V gee 0510 63 RSS 259 1 Vey E as am or Der C CD110 470u 4001 3 E 2 RTRSY 5 FIN COULEE 510
25. e power supply after 1 minutes connect the power supply turn on the unit using remote controller does the unit work normally NO Is the connection on outdoor control board and between indoor and outdoor unit good Does the L iaht 2089 MEE MOMERT CONTO POATA N connect good Does the S wire connect reliably NO Is the voltage on terminal CZ1 and CZ2 of the outdoor main PCB is 5V No Is the voltage between P and Yes Replace the module board The N on inverter module 380V power supply of PCB is supplied by the module board Replace the outdoor power supply board Replace the outdoor main PCB 13 1 3 Display LED STATUS Is power supply right Yes Yes Replace the indoor control board 13 1 4 Display LED STATUS Fan speed beyond control 32 Service manual Is connector connection good Yes 15 voltage being applied to the fan motor No Repair the connector No Yes Indoor fan motor is defective Indoor PCB is defective rang 90v 160v between mid pin and N on CN1 Replace indoor fan motor Replace indoor main PCB 13 1 5 Display LED STATUS Open or short circuit of outdoor temperature sensor Is connection to connector good Yes Replace the sensor Repair connector If display 5 all the same replace indoor main PCB 13 1 6 Display LED STATUS Room temperature or evaporator temperature sensor open or short circuit Is connection to
26. e service port 3 Check for gas leakage Check the flare connection for gas leakage Caution 4 Purge the air from the system If gas leakage is discovered in step 3 above Set the 2 way valve to the open position and take the following measures remove the cap from the 3 way valve s If the leaks stop when the piping connections are service port tightened further continue working from step 4 Using the hexagonal wrench to press the If the gas leaks do not stop when the connections valve core pin discharge for three seconds are retightened repair the location of the leak and then wait for one minute discharge all of the gas through the service port 5 Use torque wrench to tighten the service and then recharge with the specified amount of port cap to a torque of 1 8 kg m 18n m gas from a gas cylinder Service manual 8 5 Pumping down Re installation af Outdoor unit 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 Operate the unit for 10 to 15 minutes 3 Stop operation and wait for 3 minutes then connect the charge set to the service port of the 3 way valve Connect the charge hose with the push pin to the gas service port 4 Air purging of the charge hose Open the low pressu
27. fan speed AUTO nothing and three fan speed levels LOW MED and HIGH 24 Service manual 11 2 Protection 11 2 1 3 minutes delay at restart for compressor 11 2 2 Temperature protection of compressor top compressor stops when the temp of top of compressor is more than 115 compressor runs when the temp of top of compressor is less than 100 C 11 2 3 Voltage protection unit stop when the voltage is more than 260V and less than 175V 11 2 4 Inverter module Protection Inverter module Protection itself has a protection function against current voltage and temperature 11 2 5 Sensor protection at open circuit and breaking disconnection 11 2 6 Fan Speed is out of control When Indoor Fan Speed is too high higher than 2100RPM or too low lower than 300RPM the unit stops and LED displays failure information and can t return to normal operation automatically 11 2 7 Cross Zero signal error warning If there is no Cross Zero signals in 4 minutes the unit stops and LED displays failure information and can t return to normal operation automatically 11 3 Fan only mode Fan speed is high mid low Auto 11 4 Cooling mode 11 4 1 The 4 way valve is closed at cooling mode 11 4 2 The action of the compressor and the outdoor fan Condition Compressor Outdoor fan T Indoor Temp Roomtemp up ttt meum 11 4 3 Auto fan at cooling mode Condition Indoor fan speed T Indoor Temp Setting Temp Room temp up
28. he procedure pumping down pin 4 Immediately disconnect the charge hose from the 3 way valve s service port Stopping partway will allow the refrigerant to be discharged f the system has been charged with liquid refrigerant while operating the air conditioner turn off the air conditioner before disconnecting the hose 5 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 20 Service manual 9 Pressure table Note The pressure data is from 3 way valve the pressure data are pressure above atmosphere D Dry bulb temp W Wet bulb temp 9 1 MSV1 09HRDN1 fon hos fe Bo pe fos comen so o0 no n5 ees ns wh 94 064 wo us Heating mode OUTDOOR CONDITIONS 12 C 7 D OC D 4 D 7 D 15 D Indoor Conditions Pressure EU T DE E A C Pressure Pressure kg cm 34 0 34 0 33 5 5 320 0 31 0 0 28 0 0 27 27 0 PPressure kg cm 35 0 34 5 840 82 5 PC 36 5 36 0 135 5 33 5 9 2 MSV1 12HRDN1 72 Prearetigin vs or 73 re as 92 amo oare w 74 76 94 os
29. he temperature of outdoor heat exchanger rises up to 8 C and this continues for more than 80 seconds c When the temperature of outdoor heat exchanger rises up to 12 C 2 Service manual 11 7 3 Defrosting Actions max 10 minutes 10 seconds then stop 11 7 4 Rated capacity test Set mode to cooling mode Set temp to 30 C Set fan speed to high speed Push turbo button 5 times in 10 seconds Using special remoter controller After 5 hours cancel rated capacity test 11 8 Outdoor low temperature protection optional Factory standard unit has not this function Unit stops when outdoor temp is low than 15 C and lasting time more than 60 minutes and unit runs again when outdoor temp more than 12 C When indoor PCB J1 jump is on this function is available 11 9 Automatic operation mode The air conditioner automatically selects one of the following operation modes cooling heating or fan only according to the temp difference between room temp TA and set temp TS Operation mode TA TS gt 2 C Heating air only for cooling only type 11 10 Manual switch 11 10 1 Mode changes when push this button Cooing Auto mode gt Unit off gt Cooing mode 11 10 2 At Cooing mode after 30 minutes cooling operation whose fan speed is set as low the A C operates with a setting temp of 24 C 11 10 3 At auto mode the A C operates with a set temp of 24 C 1
30. htly closed space for a long time Oxygen deficiency could occur 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 There is risk of explosion or fire E 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 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 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 flooded or submerged contact an Authorized service center There is risk of fire or electric shock E Be caution that water could not enter the product There is risk of fire electric shock or product damage E Ventilate the product from time to time when operating it together with a stove etc There is risk of fire or electric shock E Turn the main power off when cleaning or maintaining the product Service manual There is risk of electric shock When the product is not be used for a long time disconnect the power supply plug or turn off the breaker There
31. not this function Unit stops when outdoor temp is low than 15 C and lasting time more than 60 minutes and unit runs again when outdoor temp more than 12 Is the outdoor temp low than 15 C Is the outdoor temp sensor right according to the table in clause 12 Yes Replace the outdoor main board 13 1 11 Display LED STATUS Are the U V W connected to compressor and inverter module right And is the compressor feed back wires CN514 connected to PCB qood Service manual Reconnecting Replace outdoor main PCB If the problem can not be solved replace inverter module o If the problem comes to again check wingding resistance of inverter compressor is it 0 64 ohm Replace inverter compressor 13 2 Diagnostic chart After energizing no indicator is lighted and the air conditioner can t be operated 36 Service manual After energizing the air conditioner can not be operated Check if AC 220V power supply outputs to indoor PCB Yes Check if AC 220V exists at the primary coil of transformer 5 Indoor PCB is defective l Check if AC 14 5V exists at the secondary coil of transformer Yes No Y Take off the secondary plug of transformer and then check if AC 14 5V exists at the secondary coil of transformer v Indoor PCB is defective Indoor PCB is defective
32. ondenser and evaporator B For installation always contact the dealer or an Authorized service center There is risk of fire electric shock explosion or injury E Do not install the product on a defective installation stand It may cause injury accident or damage to the product B 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 B Do not let the air conditioner run for a long time when the humidity is very high and a door or a windows is left open Moisture may condense and wet or damage furniture Take care to ensure that power cable could not be pulled out or damaged during operation There is risk of fire or electric shock Do not place anything on the power cable 1 There is risk of fire or electric shock B Do not plug or unplug the power supply plug during operation There is risk of fire or electric shock E Do not touch operation the product with wet hands There is risk of fire or electric shock Do not place a heater or other appliance near the power cable There is risk of fire and electric shock Do not allow water to run into electric parts It may cause fire failure of the product or electric shock Do not store or use flammable gas or combustible near the product There is risk of fire or failure of product Do not use the product in a tig
33. or if the compressor changed into non heating mode or turned off 4 way valve doesn t delay in dehumidifying mode 11 6 2 Generally the outdoor fan is turned off with the on off action of compressor in heating mode except for the defrosting mode or the end of defrost 11 6 3 Action of compressor and outdoor fan motor at heating mode compressor must run for 7 minutes after starting and then judge temperature Meanwhile other protections are still valid On On O Room temp down T lt Ts 2 On 0000 11 6 4 Indoor Fan actions at heating mode Indoor Fan can be set at HIGH MID LOW AUTO by using a remote controller but Anti cold wind function prevails Anti cold wind control function at heating mode Indoor exchanger temp up Of lt 24 When indoor temp to setting temp indoor changes to breeze speed immediately after 127 second indoor fan stop 11 6 5 Auto wind at heating mode Room temp up lt 1 ee 1 4BC lt T lt 25C T2250 26 Service manual Room temp down T lt 1 0 C 1 0 C lt T lt 2 0 C T gt 2 0C 11 6 6 Indoor evaporator high temperature protection at heating mode Condition T Indoor exchanger temp Compressor SS Of 45 11 6 7 The current 18000btu h DSL MEE lt 125 __ On Current down 18000btu h I lt 120A On 11 6 8 The temp compensation Jump setting in indoor PCB
34. re valve on the charge set slightly to purge air from the charge hose 5 Set the 2 way valve to the close position 6 Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0 1 7 Immediately set the 3 way valve to the closed position Do this quickly so that the gauge ends up indicating 0 3 to 0 5Mpa 8 Disconnect the charge set and amount the 2 way and 3 way valve s stem nuts and service port caps Use a torque wrench to tighten the service port cap to a torque of 1 8 kg m Be sure to check for gas leakage Service manual 8 6 Re air purging Re installation Outdoorunt 00 Outdoor unit a EY valve 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 minutes repeat 3 times After purging the air use a torque wrench to tighten the flare nut to 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 until the gauge indicate 0 3 to 0 5 Mpa
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