MSX-07HRN1-QC2 MSX-09HRN1-QC2 MSX-12HRN1-QC2 MSX-18HRN1-QC0
Contents
1. X 19 Electronic TUNGOD ns 20 Proper symbols and their meaning sese eee eee e eee e ee e 20 pU eile RE E I T UMP EN 20 Sea er E EIE LLL 20 Faron mode ET Fout Bladwijzer niet gedefinieerd COO ieie LT Fout Bladwijzer niet gedefinieerd Dehumidifying mode e sese eee Fout Bladwijzer niet gedefinieerd Feat Ing Rere emm Fout Bladwijzer niet gedefinieerd Defrosting mode available for heating mode Fout Bladwijzer niet gedefinieerd AO OCC al CPU Fout Bladwijzer niet gedefinieerd FOCO CODINA TUNCUO REED o OE EUN 25 NA CNET c E 25 PUTO TESTART UNCION pese Le 26 TUDO MOS rt UU eee me Ore ete te ee idad 26 Model and Paramielers e oecoc i iens css de A a a AA AAE 27 10 10 1 10 2 10 3 10 4 10 5 10 6 10 7 10 8 10 9 Content TEOUDIESAOO sle dcc 28 Display eee Mr T tessa hun Ge 28 TROUDIESNOOUING ats 28 IAG INO SUG crac in riadas 29 Resetting phenomenon often occurs during Operation sees eee eee ee eee e eee 30 Operation lamp flashes and Timer lamp of eee eee 30 Operation lamp flashes and Timer lamp On eee ee eee ee 30 Operation lamp off and Timer lamp flaShes cccccccoccnnccnncccononncononononnncnnnnnnnnnnnonnnnnononnnnnnnnnnnancnnnnnns 31 Operation lamp on and Timer lamp flashes Fout Bladwijzer niet gedefinieerd Operation l2. Service manual 10 7 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 The voltage of power supply is too low less than 187V NO Outdoor unit fault such as the compressor Power supply fault 10 8 Operation lamp on and Timer lamp flashes EEROM error indoor PCB is defective 10 9 Operation lamp flashes Timer lamp flashes This is alarm signal when the main chip can t detect over zero signal When such failure occurs the main control board must have fault 28 Service manual 11 of oerature py Temp Resistance KO KO Temp Resistance KO KO Tramp Resistance KO KO x ers v mem a sea 9 so e sams s ss la ss s osam 46 aoao s sa m moe s ame o san o zm nme o 5 o 299 6 eses s foo eaa o foo r e swa 25 oo e er 9 emma 3 eme o d anm s o emm cs o saxo c Qo ue o eme e o 49 c o me oss gens e o es o c umm 29
3. 09HRN1 QC2 MSX 12HRN1 QC2 MSX 18HRN1 QCO ISMIN 8 5A 17A IFAN 19A IRESTORE 13A IDEFROST 5 0A 8 5A TES O 24 Service manual 10 Troubleshooting 10 1 Display board ON OFF indicator This indicator illuminates when the air conditioner is in operation PRE DEF Indicator For Cooling amp Heating models only jl This indicator illuminates when the air conditioner starts defrosting automatically or when the warm air control feature is activated in heating mode AY Auto Mode mo This indicator illuminates when the air conditioner is in Auto Mode Turbo indicator JUMO This indicator illuminates when the air conditioner is in turbo operation TEMPERATURE indicator Usually it displays the temperature settings TIMER indicator This indicator illuminates when TIMER is set ON OFF ED indi q a G Sa d A iu ia morator OD ON OD This indicator illuminates when change the fan speed lonizer Plasma function indicator This indicator illuminates when lonizer Plasma function is on 10 2 Indoor Unit Error Display Display STATUS EEPROM error EIN Ez Zero crossing examination eror 0 LES Fan speed beyond contol S E4 _ Over current protection of the compressor occurs 4 times 55 aaao seso Ys Service manual 10 3 Diagnostic chart After energizing no indicator is lighted and the air conditioner can t be operated After energizing the air conditioner ca
4. 4 way valve me O OO i toG a 2s Outdoor fan e 3 an as Indoor fan 2 ans 10s gt q 8 9 Auto mode 8 9 1 The air conditioner automatically selects one of the following operation modes cooling heating or fan only according to the temperature difference between room temperature TA and set temperature TS Heating fan only at cooling only Fan only Cooling l l 1 2 TA TS 8 9 2 The indoor fan blows automatically in corresponding selected mode 8 9 3 The motion of indoor fan s blade should accord with the selected operation mode 8 9 4 One mode should be carried out for at least 15 minutes once selected If the compressor cannot start for 15 minutes reselect the operation mode according to the room temp and set temp or reselect when the set temp varies 8 10 Force cooling function 8 10 1 Select forced cooling function with the forced cooling button or the switch 8 10 2 The compressor is unconditionally turned on after 30 minutes cooling operation whose fan mode is set as low the A C operates at the DRY mode with a set temp of 24 C 8 10 3 All protections of remote control cooling are available at forced cooling operation 8 10 4 Forced Auto function Select forced auto function with the forced auto button or the switch In forced auto status the A C operates at remote control mode with a set temp of 24 C 8 11 Sleep mode 8 11 1 The sleep function is available at cooling heating or auto mode 8 11 2 Cool
5. 750ml Modd 1 RPGiBH RPGIBH RPGRD RPG28G Band Welimg_ Welig wWelig Weling Indoor fan n Wee motor Capacitor uF 1 2UF 450VAC 1 2UF AbOVAC 1 5UF A5OV 1 5UF 450V Model VDK40T YDK246T G YDK636 Outdoorfan Ba 1 Welig Weling Weling Welin men HHG RTO Ha 1 eT H R410A S50g io piping E Max differenceinlev m 8 y 10 LL Rgtpe o O 16 164 16 No 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 4 Refrigerant cycle diagram Cooling only LIQUID SIDE a 1 K FRB DIU CAPILLARY TUBE HEAT HEAT EXCHANGE EXCHANGE EVAPORATOR CONDENSER COMPRESSOR 1 GAS SIDE gt Heat pump mode INDOOH UNIT OUTDOOR UNIT E CHECK VALVE LIQUID SIDE Heating Model only c ak S 1000 1 2WAY VALVE oe AESTATE CAPILLARY TUBE L R E HEAT EXCHANGE EVAPORATOR EXCHANGE CONDENSER al GASSDE a D c Y ce EE Pea AWAY VALVE i PESE v HEVEHSING i ACCUMU VALVE LATOR de Heating Model Only K CO
6. connections are tightened further continue working from step 4 If the gas leaks do not stop when the connections are retightened repair the location of the leak discharge all of the gas through the service port and then recharge with the specified amount of gas from a gas cylinder Service manual 7 5 Pumping down Re installation Indoor unit unit TU RR UN Outdoor unit _ gt i E way valve yas we N RR a Ez EE ve Procedure 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 Operate the unit for 10 to 15 minutes 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 Air purging of the charge hose Open the low pressure valve on the charge set slightly to purge air from the charge hose Set the 2 way valve to the close position Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0 1MPa 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 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 to
7. of unit start Defrost mode Auto restart function Flexible wiring connection Easy clean panel 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 Discharge pipe temperature protect Anti rust cabinet Valve protection cover Service manual 3 Dimension 3 1 Indoor unit ie i s LES EA A AA AA Y Bee zm L L 3 2 Outdoor unit Service manual Specification A Model MSXO7HRNI QC2 MSX09HRNi QC2 MSX 2HRNI QC2 MSX 18HRN1 QCO 220 240V 50HZ 220 240V 50HZ 220 240V 50HZ 220 240V 50HZ Cooling Heating Maxinutconumpio w so 1200 150 X 2350 Mode PAS2XIC4DZDE PAtOSXiC4DZDE PA14OX2C 4FT PA200X2CS 4KU1 Tye Poey Roay Rotary Rotay Band TOSHBA TOSHIBA TOSHIBA TOSHIBA B B135 135 244E Thermal protector MEM MRA13408 9087 B160 135 241E UP3REO591 T56 UP3QE0391 T39 25UF 440 450V 25UF 440 450V 35UF 440 450V Refrigerant oil ESTER OIL VG74 350ml ESTER OIL VG74 350ml ESTER OIL VG74 480ml ESTER OIL VG74
8. product There is risk of electric shock e 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 O 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 O 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 A bad connection may cause water leakage O Keep level even when installing the product To avoid vibration of water leakage e 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 O Use two or more people to lift and transport the product Avoid personal injury e 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 Operational e 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 O Do not use the product for special purposes such as preserving foods works of art etc It is a co
9. Cover Http www mideaaircon com Midea Service manual Room airconditioner Split Wall Mounted Type Applied to MSXx 07HRN1 QC2 MSX 09HRN1 QC2 MSX 12HRN1 QC2 MSX 18HRN1 QCO NOTE Before servicing the unit please read this at first Always contact with your service center if meet problem 1 1 1 2 3 1 3 2 5 1 9 2 7 1 7 2 7 3 7 4 7 9 7 6 1 1 7 8 7 9 8 1 8 2 8 3 8 4 8 5 8 6 8 7 8 8 8 9 8 10 8 11 8 12 8 13 Content Content iiie ON RS Ra 2 Sdiety S catolico 2 A OE OE T EI T TERRENT TR UN 2 wie ee 3 DMO e ITI i 5 NAOKI et v Herr 5 AE TT Fo STO Y GESTIRE mere O RC eee AO ne EE ee 5 Refrigerant CY CIO AGN ANU e ad 9 ejo iei Ill CREER Et 10 sellis Eeee iaa mm tee ei 10 Heating ee ALON AAA EE E A 10 Winngdiagrar e dd 9 TS ET eT L tall se HH T HHT T 10 Wrench torque sheet for installation sos ioa ee e eee eee 10 CORIMECTING MS Cables RT mm 10 Pipe length and the elevati0N ccc oooonncnnccoccooncononnncnnanennnononnnncononononnnrrnnnnnnnnnncnnnnnnnnnnnnnnnnnnnannrnnnnnnnnnns 10 Air purging ofthe piping and Indooft UE oco aue oe te pebe eee a ds 11 PUMPING GOWN thesinstallallOll a a c ticas 12 Re air purging Re installation sss ERR 13 Balance refrigerant of the 2 way 3 way valves oooonccccoconcccccnoconnconnnonnnonanonnnnnnrcnnnnnnnrnronanrrnrnnanrinnnanens 14 xA Tel ifo TTT 18 Gas CHANGING em
10. ELLOW BLUE a pu 2 4 y 5 J T TE STO L 8 TRANSFORMER E KIKIKI 2 2 1 200 3 4 gay TERMINAL E pn BOARD 99199195 m i EE o MIR UNT NOTES TO OUTDOOR UNIT 1 The Color Of Power Supply Cord L N E Measures Up To The IEC Standards BROWN BIUE Y G Or The UL Standards BLACK WHITE GREEN 2 The Functions In The Rectangle Are Available For Particular Air condition Outdoor PM OUTDOOR UNIT BLACK FS BLACK C OVERLOAD RELAY COMPRESSOR BLACK EE CAPACITOR i This symbol indicate G2 element A a8 optional the actual shape shall be prevail FAN Y amp G CO 7 air FAN CAPACITOR E BLUE rcl LA r Service manual 7 Installation details 7 1 Wrench torque sheet for installation Outside diameter 7 2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet 7 3 Pipe e and the elevation Pipesize O O O OOOO O size Standard Max Additional Capacit B i d length Elevation refrigerant u LIQUID E m B m g m rox ve wren ss Indoor unit Indoor unit Outdoor unit In case that more than 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 7 4 Air purging of the piping and indoor unit Required tools Hexagonal wrench adjustable wrench torque wrenches w
11. MPRESSOR COOLING HEAT HEATING Service manual 5 Operation limits 5 1 Cooling operation Outdoor unit air temp C DB Cooling 2 10 15 20 25 30 39 40 Indoor air temp C DB Note The chart is the result from the continuous operation under constant air temperature conditions However excludes the initial pull down stage 5 2 Heating operation Indoor air temp C DB Outdoor unit air temp C 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 6 Wiring diagram MSX 07HRN1 QC2 MSX 09HRN1 QC2 MSX 12HRN1 QC2 MSX 18HRN1 QCO Indoor WIRING DIAGRAM INDOOR UNIT SWITCH BOARD SWINGMOTOR wW M R POWER SUPPLY INDOOR MOTOR BROWN OR BLACK M q Jr BUE OR WHITE VG R GREEN 195 321 321 2848 135 321 12345 E o 321 I CNA N25 O O6 0091 022 m NI HEATER CURRENT INDUCTOR I C AN MAIN BOARD Qua uan 3 COM 4 N e COMPRESSOR RELAY KI emi 9 CN2 CN9 CNB CN10 103 12 121 2 1234567 RED BLACK 10340 12 1212 IIILLL Y
12. TA Indoor ambient temperature TE Indoor evaporator temperature TS Setting temperature through the remote controller lasec Self protection amp of compressor continue three seconds until turns off the compressor Ismin Self protection amp of compressor continue five minutes until turns off the compressor Iran Self protection amp of outdoor fan indoor fans when they change from higher wind to lower wind Inestore Amp self protection return value THpernosr High wind defrosting temperature difference TMpzrnosr Middle wind defrosting temperature difference TLperrost Low wind defrosting temperature difference TE1 Anti cold wind from Fan Off to Breeze temperature TE2 Anti cold wind from Breeze to Setting Fan Speed temperature TES Anti cold wind from Setting Fan Speed to Breeze temperature TE4 Anti cold wind from Breeze to Fan Off temperature TE5 Evaporator low temperature protection entering temperature TE6 Evaporator low temperature protection restoring temperature TE7 Evaporator high temperature protection compressor off temperature TE8 Evaporator high temperature protection fan off temperature TE9 Evaporator high temperature protection restoring temperature 8 2 Function Remote receiving Testing and forced running Position set for indoor unit wind vane LCD displaying and alarm On or off Timer Protection for the compressor Current protection High temperature protection of indoor heat exchanger at hea
13. amp flashes Timer lamp flashes Fout Bladwijzer niet gedefinieerd 11 Characteristic of temperature sensor cesses Fout Bladwijzer niet gedefinieerd Service manual 1 Precaution 1 1 Safety Precaution e To prevent injury to the user or other people and property damage the following instructions must be followed e Incorrect operation due to ignoring instruction will cause harm or damage e Before service unit be sure to read this service manual at first 1 2 Warning Installation O Do not use a defective or underrated circuit breaker Use this appliance on a dedicated circuit There is risk of fire or electric shock O 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 e Always ground the product There is risk of fire or electric shock e Install the panel and the cover of control box securely There is risk of fire of electric shock e Always install a dedicated circuit and breaker Improper wiring or installation may cause fore or electric shock e Use the correctly rated breaker of fuse There is risk of fire or electric shock e Do not modify or extend the power cable There is risk of fire or electric shock e Do not install remove or reinstall the unit by yourself customer There is risk of fire el
14. ctric shock e Do not store or use flammable gas or combustible near the product There is risk of fire or failure of product e Do not use the product in a tightly closed space for a long time Oxygen deficiency could occur e 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 f 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 e 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 e Do not open the inlet grill of the product during operation Do not touch the electrostatic filter if Service manual the unit is so equipped There is risk of physical injury electric shock or product failure e 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
15. ectric shock explosion or injury O 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 condenser and evaporator O 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 O 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 e Do not let the air conditioner run for a long time when the humidity is very high and a door or a 2 windows is left open Moisture may condense and wet or damage furniture O Take care to ensure that power cable could not be pulled out or damaged during operation There is risk of fire or electric shock e Do not place anything on the power cable There is risk of fire or electric shock e 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 O Do not place a heater or other appliance near the power cable There is risk of fire and electric shock O Do not allow water to run into electric parts It may cause fire failure of the product or ele
16. efrosting condition Defrosting starts when either of the following O amp D A and B are satisfied A The compressor keeps running for 40 minutes or more B The temperature difference of evaporator and room temperature meets one of the following Breeze Lowfan Medfan High fan TL det TMdef TH def TA TS 2 Calculate from the end of latest defrost evaporator high temp Protection only closes outdoor fan with the compressor still running Add up to 90 minutes 8 8 2 Defrosting time At condition CD If item B is satisfied before item A it would be regarded as severe frosting and the defrosting time is 10 minutes If item B is satisfied after item A the defrosting time is 7 5minutes At condition 2 the defrosting time is 10 minutes After three times continuous 7 5 minute defrost the fourth defrost time should be 10 minutes The circulation is as following 7 5 minutes 7 5 minutes 7 5 minutes 7 5 minutes _ gt ip defrost defrost defrost defrost ho OE 8 8 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 reached to 7 5 or 10 minutes B The compressor current has reached to Iperrost Or above Iperost differs in different models 8 8 4 Defrosting Actions 21 Service manual Defrost 10 or 7 5 T minutes E 45s Compressor 25s gt 5
17. ing The set temperature rise 1C per hour Two hours later the set temperature will maintain as a constant and the fan speed is kept at low speed 22 Service manual The total time is 7 hours after 7 hours the unit stops 8 11 3 Heating The set temperature decrease 1 C per hour Two hours later the set temperature will maintain as a constant and the air circulation is kept at low speed Anti cold function takes precedence over all The total time is 7 hours after 7 hours the unit stops 8 11 4 Auto After an hour running under economic mode the set temp will rise 1 C if it is under cooling mode the set temp will decrease 1 C if it is under heating mode the set temp will be changeless if it is under fan only mode the condition will be the same after the air conditioner running under economic mode after 2 hours and during the next time the set temp do not change The total time is 7 hours after 7 hours the unit stops 8 12 Auto restart function In case of a sudden power failure this function automatically sets the unit to previous settings before the power failure when power returns 8 13 Turbo mode In cooling mode when pressing the turbo button on the remote controller the unit will enter turbo mode with ultra high speed and reach the set temperature more quickly After running 20 minutes in turbo mode the indoor fan will automatically recover the preset speed 23 Service manual 9 Model and Parameters MSX 07HRN1 QC2 MSX
18. ire They may burn of explode e f the 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 Service manual 2 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 Starting temperature control Indoor fan is delayed for 5 sec at the starting Time Delay Safety control Restarting is for approx 3 minutes Indoor fan speed control high med low breeze Operation indication display LCD Two direction air vane The unit will decide the louver direction according to operation mode Sleep mode auto control The 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 Self diag function The function will be operate in any operation mode Air flow Direction control The louver can be set at the desired position or swing up and down automatically Auto mode The unit can be change by the room temperature Plasma Optional Self Clean lonizer Optional Turbo mode Anti cold function Prevent the cold wind at the beginning
19. manual 7 9 Gas charging x ael T E Indoor unit Y TIEZ Liquid side eel E pd Maie ARIES arar 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 fthe 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 the 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 If 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 16 Service manual 8 Electronic function 8 1 Proper symbols and their meaning
20. n 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 YES Indoor PCB is defective Check if AC 14 5V exists at the secondary coil of transformer P Yes No Y Take off the secondary plug of transformer and then check if AC 14 5V exists at the secondary coil of transformer No y Yes Indoor PCB is defective Indoor PCB is defective 26 Service manual 10 4 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 l Yes y Indoor PCB is defective After changing indoor fan motor check if the failure realease YES Power supply circuit has problems 10 5 Operation lamp flashes and Timer lamp off Is connector connection good Is voltage being applied to the fan motor Indoor PCB is defective Fan motor is defective 10 6 Operation lamp flashes and Timer lamp on Is connector connection good Repair the connector Replace the sencor 27
21. non heating mode or turned off 4 way valve doesn t delay in dehumidifying mode 8 7 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 8 7 3 X 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 19 Service manual Compressor and outdoor fan off Room temp down Room temp up Compressor and outdoor fan on Ts Ts 2 Ts 3 T This parameter can be changed from O to 3 8 7 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 T indoor exchanger temp T temp down Fan off TE4 TE1 TE3 TE2 T Setting fan speed Breeze 8 7 5 Auto wind at heating mode T indoor temp Low fan Room temp down Room temp up Med fan 0 2 T Ts 8 7 6 Indoor evaporator high temperature protection at heating mode T indoor exchanger temp 20 Service manual Compressor off Fan off T temp up Compressor on Fan off T temp down Compressor on Fan on Ao le TE9 TE8 TE7 T 8 7 7 The louver opens to Standard Angle ANGLHEAT when power is on for the first time 8 8 Defrosting mode available for heating mode 8 8 1 D
22. nsumer air conditioner not a precision refrigerant system There is risk of damage or loss of property O Do not block the inlet or outlet of air flow It may cause product failure O 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 e Do not touch the metal parts of the product when removing the air filter They are very sharp There is risk of personal injury e Do not step on pr put anything on the product outdoor units There is risk of personal injury and failure of product e 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 e 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 e Do not drink the water drained from the product It is not sanitary could cause serious health issues O Use a firm stool or ladder when cleaning or maintaining the product Be careful and avoid personal injury e 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 e Do not recharge or disassemble the batteries Do not dispose of batteries in a f
23. on outdoor fan on Room temp down Room temp up Compressor off outdoor fan off O 1 T Ts Auto fan at cooling mode High fan Room temp up Mid fan Room temp down Low fan F 1 3 5 T Ts 18 Service manual Anti freezing control to indoor evaporator at cooling mode T evaporator temp Compressor and outdoor fan on EVAP temp down EVAP temp up Compressor and outdoor fan off after 5 mins _ ee TES TE6 T 8 6 Dehumidifying mode 8 6 1 The 4 way valve is off in dehumidifying mode 8 6 2 Compressor and Indoor Fan actions in dehumidifying mode C B A 0 2 TA TS nd Compressor and Outdoor Fan EN REEZE NON REEZE EM BREEZE Repeat on and off cycle 8 6 3 Low room temperature protection When room temperature decreases to below 10 C compressor and outdoor fan will stop indoor fan is Breeze Dehumidifying operation will be resumed when room temperature restores to over 13 C 8 6 4 Atdehumidifying mode the anti freezing function of the indoor heat exchanger is the same as that of cooling mode 8 6 5 Atdehumidifying mode the action of fans of indoor is the same as that of air only mode 8 7 Heating mode 8 7 1 Generally the 4 way valve is open in heating mode but it is closed in defrosting mode 4 way valve must delay 2 minutes compared with compressor if the compressor changed into
24. rench to hold the joints and gas leak detector Note The air in the indoor unit and in the piping must be 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 T Indoor unit L L Procedure Recheck the piping connections Open the valve stem of the 2 way valve counterclockwise approximately 90 wait 10 seconds and then set it to closed position Be sure to use a hexagonal wrench to operate the valve stem Check for gas leakage Check the flare connection for gas leakage Purge the air from the system Set the 2 way valve to the open position and remove the cap from the 3 way valve s service port Using the hexagonal wrench to press the valve core pin discharge for three seconds and then wait for one minute Use torque wrench to tighten the service port cap to a torque of 1 8 kg m 18n m Set the 3 way valve to the opened position Mounted the valve stem nuts to the 2 way and 3 way valves Check for gas leakage At this time especially check for gas leakage from the 2 way and 3 way stem nuts and from the service port Caution If gas leakage is discovered in step 3 above take the following measures If the leaks stop when the piping
25. rque of 1 8 kg m Be sure to check for gas leakage 12 Service manual 7 6 Re air purging Re installation mn FF Biss eae A Ind t je Indoor unit Liquid side Outdoor unit o IM IME Se ce z a i cylinder Procedure Confirm that both the 2 way and 3 way valves are set to the closed position 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 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 Check the gas leakage Check the flare connections for gas leakage Discharge the refrigerant Close the valve on the charging cylinder and discharge the refrigerant until the gauge indicate 0 3 to 0 5 Mpa 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 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 13 Service manual 7 7 Balance refrigerant of the 2 way 3 way valves RM 0 Outdoor unit i Te oa an e E a
26. ting mode Auto defrosting and heating recovery at heating mode Anti cold air at heating mode Anti frozen at cooling mode 8 3 Protection 8 3 1 3 minutes delay at restart for compressor 8 3 2 Sensor protection at open circuit and breaking disconnection 8 3 3 Fan Speed is out of control When Indoor Fan Speed is too high higher than 2100RPM or too low lower than 300RPM lasting 50 seconds the unit stops and LED displays failure information and can t returns to normal operation automatically 8 39 4 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 returns to normal operation automatically 8 3 5 The current protection of the compressor 17 Service manual Current down 3sec Compressor turn off after 5 second later 5min Compressor turn off Current up after 5 minute later fan The outdoor fan turn off heating restore The outdoor fan turn Indoor fan On low speed cooling compressor On outdoor fan On If compressor turns off for continuously 4 times due to current protection in 5 minutes from Compressor On the unit stops and LED displays failure information and can t returns to normal operation automatically 8 4 Fan only mode Fan speed is high mid low Auto 8 5 Cooling mode The 4 way valve is closed at cooling mode The action of the compressor and the outdoor fan T indoor temperature Compressor
27. ve f l POA po us Lus mm CLOSE Procedure Confirm that both the 2 way and 3 way valves are set to the open position Connect the charge set to the 3 way valve s service port Leave the valve on the charge set closed Connect the charge hose with the push pin to the service port Open the valves Low side on the charge set and discharge the refrigerant until the gauge indicates 0 05 to O 1 Mpa If 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 14 Service manual 7 8 Evacuation Outdoor unit fm TEN S Y SE f ZN Gas side gt a Ta Vacuum pump Procedure Connect the vacuum pump to the charge set s centre hose Evacuation for approximately one hour Confirm that the gauge needle has moved toward 0 1 Mpa 76 cmHg vacuum of 4 mmHg or less 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 Disconnect the charge hose from the vacuum pump Vacuum pump oil if the vacuum pump oil becomes dirty or depleted replenish as needle 15 Service
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