MSR1-24HRN1-QB8
Contents
1. Room temperature 1 2 Time 8 12 4 Auto After an hour running under economic mode the set temp will rise 1 if it is under cooling mode the set temp will decrease 1 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 13 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 14 Turbo mode 8 14 1 Under cooling mode except Force Cooling mode the indoor fan motor will run in Turbo speed when receive the signal from remoter controller and will get back to the presetting speed when receive again 8 14 2 The turbo mode will cancel and indoor fan motor will get back to the presetting speed when one of following condition occur a mode changed b get into Force Cooling mode c turn off the air conditioner 8 14 3 Sleep mode is not available in this mode 23 24 9 Model and Parameters Wee am meom Dem pm mom 2C Dm x Dm ow w e pw o Service manual Service manual 10 Troubleshooting 10 1 Display board 4 dod L T j AUTO DEFROST OPERATION TIMER S Operation The indicator flashes once every second after power is on and i2. Repair the connector 10 7 Outdoor unit protects 10 8 EEROM error EEROM error indoor PCB is defective change indoor PCB or change EEPROM if it s changeable 10 9 Indoor unit communication error Com 28 29 Service manual 11 Characteristic of temperature sensor Temp Resistance KO Temp Resistance KO Temp Resistance KO 58 7079 a i el om oe 49 3161 12 0561 3 348 41 17 1 1 9 o sai zl ome 299 sl ze sl ow nl zm sl zee sl c m m ar 9 ze sl om sl zm ol remm sl soo o o re ol eme nl 4o o mmm os eme a mm o o vos
3. TE16 The indoor evaporator temperature after the defrost action fan on temperature TC1 Outdoor condenser sensor temperature for the defrost condition 1 TC2 Condenser sensor temperature after defrost TC3 Outdoor condenser sensor temperature for the defrost condition 2 8 3 Function Remote receiving Testing and forced running Position set for indoor unit wind vane LED displaying and alarm On or off Timer Protection for the compressor Current protection High temperature protection of indoor heat exchanger at heating mode Auto defrosting and heating recovery at heating mode Anti cold air at heating mode 16 Service manual 8 4 Protection 8 4 1 3 minutes delay at restart for compressor 8 4 2 Sensor protection at open circuit and breaking disconnection 8 4 3 Fan Speed is out of control When Indoor Fan Speed is too high higher than High Fan 300RPM or too low lower than 400RPM the unit stops and LED displays failure information and can t returns to normal operation automatically 8 4 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 4 5 The current protection of the compressor Current down 3aec Compressor tum off after 5 second later mn Compressor tum aff Current up after 5 minute later fan Tha outdoor fan turn Off healing restore Tha Indoor fan turn Indoor
4. fan On low speed caoling compressor On outdoor fan On lf compressor turns off for continuously 4 times due to current protection in 5 minutes from Compressor On the unit stops and LCD displays failure information and can t returns to normal operation automatically 8 5 Fan only mode Fan speed is high mid low Auto 8 6 Cooling mode The 4 way valve is closed at cooling mode The action of the compressor and the outdoor fan T indoor temperature Compressor on outdoor fan on Room temp down Room temp up Compressor off outdoor fan off i Z U 1 T Ts 18 Service manual Service manual Auto fan at cooling mode High fan Room temp up Mid fan Room temp down Low fan 1 4 9 T Ts 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 i TES TE6 T Condenser high temperature protection only for heat pump Compressor and outdoor fan on COND temp down COND temp up Compressor and outdoor fan off after 5 mins TE11 TE10 T 8 7 Dehumidifying mode Indoor fan speed at low speed Protection is same as cooling mode 8 8 Heating mode 8 8 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 non heati
5. m m Be sure to check for gas leakage Service manual 8 Electronic function 8 1 Electronic control working environment Input voltage 175 253V or 100 130V Input power frequency 60Hz Ambient temperature 7 C 43 C Indoor fan normal working amp is less than 1A Outdoor fan normal working amp is less than 1 5A Four way valve normal working amp is less than 1A owing motor DC12V Compressor single phase power supply Its normal working amp is less than 15A 8 2 Proper symbols and their meaning T1 Indoor ambient temperature 12 Indoor evaporator temperature T3 Outdoor condenser temperature TS Setting temperature through the remote controller TE1 Anti cold wind from Fan Off to Breeze temperature TE2 Anti cold wind from Breeze to Setting Fan Speed temperature TE3 Anti cold wind from Setting Fan Speed to Breeze temperature TE4 Anti cold wind from Breeze to Fan Off temperature TES Evaporator low temperature protection entering temperature TE6 Evaporator low temperature protection restoring temperature TET Evaporator high temperature protection compressor off temperature TE8 Evaporator high temperature protection fan off temperature TE9 Evaporator high temperature protection restoring temperature TE10 Condenser high temperature protection compressor off temperature TE11 Condenser high temperature protection restoring temperature TE14 The indoor restoring temperature when the compressor is off on the heating mode
6. 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 6 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 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 e Do not drink the water drained from the product It is not sanitary could cause serious health issues 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 Do not recharge or disassemble the batteries Do not dispose of batteries in a fire They may burn of explode e 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 bat
7. 220V exists at the primary coil of transformer H Indoor PCB is defective 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 No v 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 v Indoor PCB is defective After changing indoor fan motor check if the failure realease YES l Power supply circuit has problems 10 5 Over current protection of the compressor occurs 4 times Over current protection of the compressor occurs 4 times After changing the main control board check if the failure realease The voltage of power supply is too low less than 187V Outdoor unit fault such as the compressor Power supply fault 27 Service manual 10 6 Temperature sensor error Including the indoor room indoor evaporator and outdoor condenser temperature sensor
8. C DB 35 30 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 Indoor F Optional CH AIR CONDITIONER 5 2s Ee SL WIRING DIAGRAM TRANSI INDOOR UNIT L j UNITI eaa FUSE 3 15A 250V a GAP a an m 5 de TRANS oe Cw i TIS Ll m uiis LIO m CAP1 mm CONNECTORS RED j BLUE WHITE Y G TO OUTDOOR UNIT Outdoor KM1 ay WHITE or BLACK WIRING DIAGRAM OUTDOOR UNIT BLACK PELO BED s 1 il BLACK er m aata NL facom CT CURRENT INDUCTOR IIE TRANSECEMER Z PCB SOCKETS tH Lm VN be a T Symbol 1 indicates fhe element E optional fhe actud shape shall be prevail Symbol 2 indicates compressor intemal or extemal components PTCR ee eg TOINDOOR UNIT POWER SUPPLY Service manual T Installation details 7 1 Wrench torque sheet for installation Outside diameter m s o 69 52 o 12 7 1 2 o 15 88 5 8 7 2 Connecting the cables en O1 The power cord of connect should be selected according to the following specifications sheet ee on a a EEE 7 3 Pipe length and the elevation Standard Max Max Pipe Additional Capacity l l length Elevation length refrigerant Btu h LIQUID 2 g m Indoor unit Indoor unit n Outdoor unit In
9. Precaution 1 1 Safety Precaution 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 Before service unit be sure to read this service manual at first 1 2 Warning gt Installation e 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 Always ground the product There is risk of fire or electric shock Install the panel and the cover of control box securely There is risk of fire of electric shock 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 Do not modify or extend the power cable There is risk of fire or electric shock Do not install remove or reinstall the unit by yourself customer There is risk of fire electric shock explosion or injury 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 6 For install
10. S gt SKLIMA Cover Strategic Products and Services Http www mideaaircon com Midea Service manual Room airconditioner Split Wall Mounted Type Applied to MSR1 24HRN1 QB8 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 5 2 7 1 7 2 7 3 14 1 9 7 6 Tf 7 8 7 9 8 1 8 2 8 3 8 4 8 5 8 6 8 8 8 8 9 8 10 8 11 8 12 8 13 Content Content FeO CULO Moe 2 EE 2 E ge Un LS eer 2 PUIG CIO fee err E MEE 3 DGT T scd ater uL DC rm cu PIRE RI d rr RET DIE 5 liers EITM ee ad ecc T PERPE 5 OUOOP UA Me AA 5 Refrigerant cycle Gla gram zown cod copa EEN woonde cu dende ENEE 8 Operation ROSE 9 elle Lee en EE 9 PIC AUG OPE al Msc RE 9 WV Alde diagr T EE 8 JE E eege ll MEE QR E E D E LLL E 9 Wrench torque sheer for installation us cect ies etit e o ec tee olden dede esee edt e bete tmt etu ende 9 Connecting EE EE 9 Pipe IGNOU ET Lean en DEE 9 Air purging of the piping and indoor unt 10 Pumping down Re installation A 11 Rear purging IesipstallallOr EE 12 Balance refrigerant of the 2 way 3 way valves nennen nnne nnne nnns 13 ciego PC 17 Eas e Le ee E TEE E E EE 18 Electronic TUNCUON ee 19 P
11. acuum pump oil becomes dirty or depleted replenish as needle 14 Service manual 7 9 Gas charging gen ou N Wi s EE Indoor unit Y DES Y Liquid side mx Outdoor unit E a Jt 2 way valve d Ft GE SCH MEE Ps ve i 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 Ifthe 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 Ifthe 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
12. ation 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 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 6 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 There is risk of fire or electric shock Do not plug or unplug the power supply plug during operation There is risk of fire or electric shock 6 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 e Do not allow water to run into electric parts It may cause fire failure of the product or electric shock e 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 tightly closed space for a long time Oxygen def
13. case that more than 5m 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 wrench 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 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 10 Outdoor unit Set the 3 way valve to the opened position Mounted the valve s
14. e gas leakage 12 Service manual 7 7 Balance refrigerant of the 2 way 3 way valves Ind t YE i Indoor unit H ZN Liquid side NE Outdoor unit Fa Ta E Ex 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 13 Service manual 7 8 Evacuation Outdoor unit 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 v
15. iciency 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 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 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 Service manual electric shock e 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 When the product is soaked flooded or submerged contact an Authorized service center There is risk of fire or electric shock 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 Turn the main power off when cleaning or maintaining the product 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 is risk of product damage or failure or unin
16. lluminates when the air conditioner is in operation Timer indicator The indicator illuminates then TIMER is set ON PRE DEF indicator For cooling amp heating mode only The air conditioner starts defrosting automatically if outdoor unit frosts in heating operating At this time PRE DEF indicator illuminates Auto indicator This indicator flashes when the air conditioner is in AUTO operation ECON indicator This indicator illuminates while the air conditioner is in economic operation 10 2 Troubleshooting For models adopting electrical function Operation Timer Defrosting Auto Failure phenomenon lamp lamp lamp lamp Over current protection of the compressor occurs 4 s ea EN times Indoor room temp sensor is open circuit or short circuit DEM E EAE ON Temp sensor on indoor evaporator is open circuit or short circuit Temp sensor on outdoor condenser is open circuit or short circuit without cooling only models Outdoor unit protects outdoor compressor current phase order etc X Extinguish x Flash at 5Hz NOTE For cool only model the defrosting lamp is replaced with fan lamp but malfunction display remains 25 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 can not be operated Check if AC 220V power supply outputs to indoor PCB Yes Check if AC
17. n Defrost starts when either of the following The compressor works under the condition that T3 lower than O C add up to more than 40 minutes and under the condition that T3 is lower than 3 C consecutively reaches 3 minutes Calculate from the end of latest defrost that evaporator high temperature protection only closes outdoor fan with the compressor still running add up to 90 minutes 8 9 2 Conditions of defrost ending Defrosting ends when either of the following The time gets to 10 minutes T3220 C The circulation is as following 8 9 3 Defrosting Actions KI Defrost 10 or 6 minutes _ gt Compressor TLT gt lt 5s 4 way valve SSES EE i oc lt 2s Outdoor fan em as as Indoor fan SC 10s S Remark when the evaporator pipe temperature sensor more than TE16 the indoor fan start to run 8 10 Auto mode 8 10 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 21 Service manual Heating fan only at cooling Fan only Cooling 1 2 TA TS 8 10 2 The indoor fan blows automatically in corresponding selected mode 8 10 3 The motion of indoor fan s blade should accord with the selected operation mode 8 10 4 One mode should be carried out for at least 15 minutes once selected If the compressor cannot start for 15 minute
18. ng mode or turned off 4 way valve doesn t delay in dehumidifying mode 8 8 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 19 Service manual 8 8 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 Compressor and outdoor fan off Room temp down Room temp up Compressor and outdoor fan on Ts Ts 2 Ts 3 d This parameter can be changed from 0 to 3 8 8 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 Setting fan speed Breeze TE4 TE1 TE3 TE2 T 8 8 5 Auto wind at heating mode T indoor temp Med fan Room temp down Room temp up High fan i r 7H 0 2 T Ts 8 8 6 Indoor evaporator high temperature protection at heating mode T indoor exchanger temp 20 Service manual Compressor off Fan off Compressor on Fan off T Compressor on Fan on 5 TE9 TED TET T The louver opens to Standard Angle ANGLHEAT when power is on for the first time 8 9 Defrosting mode available for heating mode 8 9 1 Defrosting conditio
19. roper symbols and their meaning esse eee eee eee eee eee eee eee eee eee 19 Sieten 19 POECI O TEETH 19 Fanon MOS e B d Nie zdefiniowano zak adki Cooling ModE M TEES B d Nie zdefiniowano zak adki Deh midiMing ModE T B d Nie zdefiniowano zak adki Heating MOS niente ade slaxchlindedeundasacenbahacaaindedeanaites B d Nie zdefiniowano zak adki Defrosting mode available for heating mode Blad Nie zdefiniowano zaktadki AUG MIO CG EE Blad Nie zdefiniowano zaktadki FOCE COOMING TUNCHON T P 24 ESPO EE 24 Auto restart TUMCUOM etc E 25 TUDO a let 25 Model and Parameters EE 26 10 10 1 10 2 10 3 10 4 10 5 10 6 10 7 10 8 10 9 Content Ree Ee Ee e dl ue E 27 BIS ee C OAC NARREN EEN TENEN NEEN EEEN EE NONE 27 TrOUDIGSNOOUNO tn 2f SISI en Te 28 Resetting phenomenon often occurs during operation sese ee eee eee 29 Operation lamp flashes and Timer lamp oft 29 Operation lamp flashes and Timer lamp ON sese ee ee ee eee 29 Operation lamp off and Timer lamp flashes sese eee ee 30 Operation lamp on and Timer lamp flashes B d Nie zdefiniowano zak adki Operation lamp flashes Timer lamp flashes B d Nie zdefiniowano zak adki 11 Characteristic of temperature sensor see Blad Nie zdefiniowano zak adki Service manual 1
20. s reselect the operation mode according to the room temp and set temp or reselect when the set temp varies 8 11 Force cooling function 8 11 1 Select forced cooling function with the forced cooling button or the switch 8 11 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 8 11 3 All protections of remote control cooling are available at forced cooling operation 8 11 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 Manual operation is controlled by touching buttons and divided into force cooling and forced auto mode It transfer between these two modes by pressing the buttons the cycling order of the button press is as below graph show to you Remote Forced Forced mode auto mM cooling 8 12 Sleep mode 8 12 1 The sleep function is available at cooling heating or auto mode 8 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 Room temperature 1 2 Time 8 12 3 Heating 22 Service manual 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 Anti cold function takes precedence over all
21. tem 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 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 n ep Outdoor unit Eet on 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 q
22. tended 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 CAUTION Always check for gas refrigerant leakage after installation or repair of product Low refrigerant levels may cause failure of product Install the drain hose to ensure that water is drained away properly A bad connection may cause water leakage Keep level even when installing the product To avoid vibration of water leakage Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods It may cause a problem for your neighbors Use two or more people to lift and transport the product 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 Operational 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 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 e Do not block the inlet or outlet of air flow It may cause product failure Use a soft cloth
23. teries 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 Yes 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 Lamps VLED Light up in the VLED for each operation mode 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 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 Turbo mode Anti cold function Prevent the cold wind at the beginning 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
24. 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 3 2 Service manual 4 Refrigerant cycle diagram Cooling only Heat pump mode HEAT EXCHANGE EVAPORATOR INDOOR UNIT HEAT EXCHANGE EVAPORATOR Lose 4 el LIQUID SIDE N A GAS SIDE LIQUID SIDE LT LE 2 WAY VALVE GAS SIDE LT LR 3 WAY VALVE SEL Ka KI CAPILLARY TUBE HEAT EXCHANGE CONDENSER MEN _ l gu I a dr To S i ees S REVERSING ACCUMU VALVE LATOR Heating V de Heating Model Only CAPILLARY TUBE HEAT EXCHANGE CONDENSER COMPRESSOR OUTDOOR UNIT TT CHECK VALVE Heating Model only Ww l T A TIT COMPRESSOR COOLING HEATING Service manual 5 Operation limits 5 1Cooling operation Outdoor unit air temp C DB Cooling J 10 15 20 25 30 35 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 2Heating operation Indoor air temp
25. uickly 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 torque of 1 8 kg m Be sure to check for gas leakage 11 Service manual 7 6 Re air purging Re installation D Close D Taa TT IER N Charging 3 CLOSE 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 th
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MSR1 24HRN1 QB8