SERVICE MANUAL
Contents
1. CE Gas sige Freeway valve M Z Manifold valve mmm I 610 Compound N uw NS PA S S lt gt Pressure M F 2 20Pa Z m N Handle Lo Handle Hi NE AES Charge hose Charge hose J ry d Vacuum H pump x Vacuum pump 1 Completely tighten the flare nuts of the indoor and outdoor units confirm that both the 15 2 way and 3 way valves are set to the closed position 2 Connect the charge hose with the push pin of handle lo to the 3 way valves gas Service port 3 Connect the charge hose of handle hi connection to the vacuum pump 4 Fully open the handle Lo of the manifold valve 5 Operate the vacuum pump to evacuate 6 Make evacuation for 30 minutes and check whether the compound meter indicates 0 1Mpa If the meter does not indicate 0 1Mpa after pumping 30 minutes it should be pumped 20 minutes more If the pressure can t achieve 0 1Mpa after pumping 50 minutes please check if there are some leakage points Fully close the handle Lo valve of the manifold valve and stop the operation of the vacuum pump Confirm that the gauge needle does not move approximately 5 minutes after turning off the vacuum pump 7 Turn the flare nut of the 3 way valves about 45 counterclockwise for 6 or 7seconds after the gas coming out then tighten the flare nut again Make sure the pressure display in the pressure indicator2. OUTDOOR LIQUID SIDE Electronic Expansion Valve Bm St _ lt 2ANAY VALVE CAPILIARY TUBE HEAT EXCHANGE CONDENSER GAS SIDE d 4 3 WAY VALVE REVERSING VALVE ACCUMULATOR gt S 4 COOLING COMPRESSOR 4 HEATING 4 Wiring diagram MFGA 60ARDN1 QC2 Indoor Unit 202043790201 MIDDLE PIPE TEMP AUXILIAR
3. Procedure 1 Confirm that both the 2 way and 3 way valves are set to the opened position Remove the valve stem caps and confirm that the valve stems are in the opened position Be sure to use a hexagonal wrench to operate the valve stems 2 Connect the charge hose with the push pin of handle lo to the 3 way valves gas service port 3 Air purging of the charge hose Open the handle Lo valve of the manifold valve slightly to purge air from the charge hose for 5 seconds and then close it quickly 4 Set the 2 way valve to the close position 5 Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0 1MPa 22 6 Set the 3 way valve to the closed position immediately Do this quickly so that the gauge ends up indicating 0 3 to 0 5Mpa Disconnect the charge set and tighten the 2 way and 3 way valve s stem nuts Use a torque wrench to tighten the 3 way valves service port cap to a torque of 1 8 kgf m Be sure to check for gas leakage 2 Air purging by the refrigerant Outdoor unit ARN 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
4. ast d 22 l 916mm 19mm D gt IL Py LIY B a deu H Valve body Packed valve Half union Valve stem Notes for the bendable pipe a The bendable pipe should be used on the indoor side b Bend angel may not exceed 90 degrees c The bend location should be made on the center of the pipe if possible as for bend radius the bigger the better d The bendable pipe may not be bent for more than 3 times Bend the thin pipe a While bending expose the pipe by cutting the concave gap on the bending heat insulation pipe roll it with soft band after bent b To avoid pipe deformation the radius is the bigger the better c Use a pipe bending device to make the compact bending pipe Use thumb to curve the pipe 2 i Y Untie the pipe make is straight Min Radius 100 mm 5 3 2 2 Using bronze pipe selling in market Completely shut the cut off valves of the outdoor unit as ex work status After the refrigerant pipe has been connected with both the indoor and outdoor unit let the air exhaust out from the maintenance gap onhe low pressure cut off valves of the outdoor unit Screw the nuts tightly on the maintenance gap after the air has been drained 5 3 2 3 To make the refrigerant pipe unblocked completely You should keep the cut off valves of the outdoor unit completely open after you have finished the above steps 5 3 2 1 or 5 3 2 2 Note 1 Before screwing the reamer nut smear the pipe and the con
5. ei 2 way valve Lem SC I Indoor unit M Charging cylinder Electronic scale Procedure 1 Connect the charge hose to the 3 way service port open the 2 way valve and the 3 way valve Connect the charge hose to the valve at the bottom of the cylinder If the refrigerant is R410A make the cylinder bottom up to ensure liquid charge 2 Purge the air from the charge hose Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air be careful of the liquid refrigerant 3 Put the charging cylinder onto the electronic scale and record the weight 4 Operate the air conditioner at the cooling mode 5 Open the valves Low side on the charge set and charge the system with liquid refrigerant 20 6 When the electronic scale displays the proper weight refer to the gauge and the pressure of the low side disconnect the charge hose from the 3 way valve s service port immediately and turn off the air conditioner before disconnecting the hose 7 Mount the valve stem caps and the service port Use torque wrench to tighten the service port cap to a torque of 18N m Be sure to check for gas leakage 21 5 3 5 Re installation while the indoor unit need to be repaired 1 Collecting the refrigerant into the outdoor unit Gas side a AD J Open pag S Don Moo
6. 2 Fan hood 7 Drain pipe Note All the pictures in this manual are for explanation purpose only They may be slightly different from the air conditioner you purchased depend on model The actual shape shall prevail 30 6 2 CONTROL PANEL Control Buttons and Functions Unit Control Panel Room Temp Set Temp Set Timer display Kl ES ON ON OFF MODE FAN SPEED A ADJUST Y Indicators Auto operation display Cooling operation display 12 T TREO mai e CD TEST RUN LOCK AUXILIARY FUNCTION 4 Swing operation display Sleep operation display Turbo operation display M Dry operation display TIMERON On timer operation display Heating operation display Fan operation display 7 Operation characteristics Off timer operation display 8 Lock operation display BERN Fan speed display low temperature cooling system Mode i Tempat Cooling operation Heating operation Drying operation Room temperature 217 C 30 C gt 10 5 C 43 C 7 C 24 C 5 C 43 C Outdoor temperature 15 C 43 C For the models with CAUTION 1 If air conditioner is used outside of the above conditions certain safety protection features may come into operation and cause the unit to fu nction abnormally 2 Room relative humidity less than 80 If the air conditioner operates in excess of 31 this
7. ete teet e eere te Eten a tee ess 28 6 External view and display U U U 30 Extra VIEW s SONA S 30 6 2 CONTROE PANEL en RUP RR RO EROR URS 31 7 Operation characteristics U U U U u u uuu uuu u uu 31 8 Electronic fUNCHON u ee 32 8 1 Main data IPtrOd CGUSNS S y p sa a te tete d 32 82 Operation Modes and Functions naa 32 Other lee 37 9 Characteristic of temperature sensor U U u 38 10 Trouble shooting 38 10 1 Protective Function 38 le TE Uu 40 10 3 Troubles and Solutions l 40 1 Safety Precautions 1 1 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 Installation For electrical work contact the dealer seller a qualified electrician or an Authorized service center Do not disassemble or repair the product by yourself Sharp edges could cause injury be especially careful of the case edges and the fins on the condenser and evaporator Be sure the installation area does not deteriorate with ag
8. figure the surface of the air conditioner may attract condensation Please sets the vertical air flow louver to its maximum angle vertically to the floor and set HIGH fan mode 3 Optimum performance will be achieved within this operating temperature 8 Electronic function 8 1 Main data Introduction Ts Set temperature T1 Room temperature T2 Evaporator coil temperature T3 Condenser coil temperature T4 Outdoor ambient temperature 8 2 Operation Modes and Functions 8 2 1Manual Operation 8 2 2 Heating Mode 8 2 2 1 Four way valve opens at once while defrosting process closes 8 2 2 2 After AC starts up the PCB will calculate the capacity demand T1 Ts AT 20 2 2 2 4 gt a b d 3 2 1 0 AT 3 Capacity demandz a b c d HPx A 1 A2 A1 is the factor depending on the outdoor ambient temp 2 is the factor depending on the evaporator coil temp 32 According to the capacity demand the compressor will run at the corresponding frequency 8 2 2 3 Indoor Fan Action Anytime remote switchover for fan speed among high low auto anti cold air function takes priority Auto fan in heating mode T1 TS AT 3 High 2 Low 8 2 2 4 Outdoor fan T4 A ZIN 27 H 25 C 20 C 15 C Low temp cooling In low temp cooling zone the outdoor fan will be controlled as below T3 H 38 C 30C 27 C SAS Off 8 2 2 5 Anti cold air When evaporator coil temp T2 is gettin
9. is a little higher than the atmosphere pressure Then remove the charge hose from the 3 way valve 8 Fully open the 2 way valve and 3 way valve and securely tighten the cap of the 3 way valve 2 Air purging by refrigerant E Ei _ ge Indoor unit y Liquid side _ Outdoor unit 7 Pd f m Ms Procedure 1 Confirm that both the 2 way and 3 way valves are set to the closed position 2 Connect the charge set and a charging cylinder to the service port of the 3 way valve 3 Air purging Open the valves on the charging cylinder and the charge set Purge the air by loosening the flare nut on the 2 way valve approximately 45 for 3 seconds then closing it for 1 minute repeat 3 times After purging the air use a torque wrench to tighten the flare nut on the 2 way valve 4 Check the gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant Close the valve on the charging cylinder and discharge the refrigerant by loosening the flare nut on the 2 way valve approximately 45 until the gauge indicates 0 3 to 0 5 Mpa 6 Disconnect the charge set and the charging cylinder and set the 2 way and 3 way valves to the open position Be sure to use a hexagonal wrench to operate the valve stems 7 Mount the valve stems nuts and the service port cap Be sure to use a torque wrench to tighten the service port cap to a torque 18N m Be sure to check
10. minute protection feature Wait for a while heat at all The temperature setting is not Set the temperature appropriated properly 40 If you still cannot solve the problem after trying the above pull out the power plug and call the dealer The following displays indicate an error or problem 24K What to do N mb r Display code Problems Temperature Sensor is Contact service people off or short circuit 1 E1 E2 E3 E4 Outdoor unit protection Contact service people outdoor temp sensor is 2 Ed circuit or short circuit The temperature of the The temperature of the evaporator of indoor unit evaporator of indoor unit is is too low For the too low For the protection protection feature the feature the compressor compressor turns off turns off automatically automatically 3 PO EEPROM chip Contact service people 4 E malfunction Defrosting or anti cold air The unit will auto restart after finishing the defrosting or the temperature of the Heat Exchanger of indoor unit 5 P1 raise CAUTION When the power cord is to be replaced replacement work shall be performed by authorized personnel only 4l
11. well done if installed on metal ceiling wall Deep Base Wide enough 5 Fix the unit feet with bolts M10 M8 Be sure the unit is fixed strongly enough to against blast or earthquake 6 Make a concrete basement to the unit by the following references A Air inlet J Air inlet 1 1 KZ I Air outlet For the value of A and please refer to the dimension table 5 3 Refrigerant pipe connection 5 3 1 Pipe length and the elevation The correct refrigerant quantity filled in the 5 meter long pipe of the outdoor unit is marked on the Product Data Plate If you have to use longer pipe for every meter plus pipe the refrigerant should be added according to the following calculation Pipe size Standard Max Additional Capacity length Elevation refrigerant Btu h Liquid m B m g m 3 8 MFGA 60ARDN1 QC2 09 52 Indoor unit Indoor unit Outdoor unit Caution Capacity is base on standard length and maximum allowance length is base of reliability Oil trap should be installed per 5 7 meters 5 3 2 Piping connection 5 3 2 1 Connecting Of Refrigerant Pipe a Only the correctly installing of indoor and outdoor unit done can the refrigerant pipe be connected b The cut off valves are completely close before ex work Before connecting the refrigerant pipe be careful to check whether the valves are completely close c The connecting proced
12. you must a Pay full attention to the unit because its long outer shape makes it easy to fall b Firmly fix the unit to the wall or in the ground to avoid accidental falling Screws 1 39X25 Installation Boar Plain washer Arot Screws gt J Installing Board 2 Air In E M z 2 Dismounting the air inlet grid Please take off the air inlet grid before connecting the pipes wires Pull down the two knobs on the grid take off the two screws then the air inlet grid goes free 3 Take the Pipe Clip off before connecting the pipes and wiring fit it when these finished Use accessories to connect the pipes wires on both sides and back side Pipe wire hole positions on both sides Drain Pipe t l l Refrigerant Pipe Ninng Refrigerant drain Io Tw zd jing Reamer Joint Reamer Joint Hole435 Pipe hole 80 Pipe wire hole position on back side Pipe wire hole position on the bottom Wiring Refrigerant drain I Hole b 35 Pipe hole RIPE NOEL 5 2 2 Outdoor Unit 1 Ship the a c to the installation place originally packed 2 Be careful while hanging the unit because the center of gravity of the unit is not centralized 3 Do not make the angle of inclination more than 45 degrees while shipping Avoid horizontal storage 4 Be sure the electric insulation work is
13. 5 16116 42 47625 69 1 7055 10 Trouble shooting 10 1 Protective Function 10 1 1 3 minute delay for the compressor start up 10 1 2 Evaporator protection against high temperature 10 1 2 1 Only available under heating mode 10 1 2 2 The operation principle is as follows T2 evaporator temperature Condition Outdoor fan Compressor Evaporator temp 60 C last seconds Off Off Evaporator temp lt 54 C On On 10 1 3 Evaporator Protection against low temperature 10 1 3 1 Only available under cooling and dehumidifying status 10 1 3 2 Protection principle 38 Condition Outdoor fan Compressor T2 lt 2 C last 3 minutes Off Off T227 C On On 10 1 3 3 The restart of the compressor shall execute the delay protection 10 1 4 Condenser high temperature protection 10 1 4 1 Only available to cooling and dehumidifying mode 10 1 4 2 Action condition Condition Outdoor fan Compressor Condenser temp 265 C last 3 seconds Off Off Condenser temp lt 52 C On On 10 1 4 3 Delay protection should be performed when the compressor restarts 10 1 5 Outdoor protection When outdoor protection signal is high level last 4 seconds outdoor unit will perform protection the whole machine will be shut down while the indoor unit will indicate the corresponding protection signal Ed The A C will recover if outdoor errors are eliminated after
14. Locally purchased Indoor outdoor unit connective cable signal wire Indoor outdoor unit connective cables L Outdoor gt s Indoor Unit ES unit ES L 2 Note The power supply of the air conditioner is different according to the models Please refer to the WIRING DIAGRAM pasted on the indoor and outdoor units before wire connection 5 6 TEST RUN Perform test operation after completing gas leak and electrical safety check The test operation time should last more than 30 minutes 1 Open the panel and lift the panel up to angle which remains fixed Do not lift the panel any further when it stops with a click sound 2 Press the manual switch button twice until the operation indicator lights the unit will operate on Manual Cool mode 3 Check if all the functions works well while testing the air conditioner Especially check whether the drainage of indoor unit is smooth or not 4 Press the manual switch button again till the operation indicator turns dark after finishing the test operation and the unit stops operation 29 6 External view and display 6 1 External view This unit consists of indoor unit and outdoor unit Indoor unit 1 Air outlet Outdoor unit 2 Operation panel 8 Connection cable 3 Horizontal airflow control louver Connection pipe 4 Vertical airflow control louver 10 Cut off valve 5 Front panel upper and lower AD Air outlet 6 Air inlet
15. SERVICE MANUAL AIRCONDITIONER FLOOR STANDING TYPE Model MFGA 60ARDN1 QC2 CONTENTS 1 Safety Precautions it u dentes s 1 del APKECAUUOM A re nete eo eg oem edet Ea RR 1 SOU D 1 1 9 ira tede ie ina od Pe AEA aS v vtae fa pers 1 1 4 Operational te det er Ahan er ed deoa doutes 2 2 MDC e 3 21 Indoor nit tO nt vata 3 2 2 Outdoor Unit ttt dat t tete re 4 3 Refrigerant cycle diagram nnn aaan 5 P em LIIS Re TE LTE 6 5 Installation details Ecc 7 c el adno d la te 7 eene Reen 8 5 3 Refrigerant pipe connection enaa a aaa eee aq u kay asya aa 10 5 3 3 Installation for the first me u a masa meer 15 5 3 4 Adding the refrigerant after running the system for many 20 5 3 5 Re installation while the indoor unit need to be 22 5 3 6 Re installation while the outdoor unit need to be 25 5 4 Drain Pipe of The Indoor Unit a nennen nennen 28 5 5 WING kuk rt a edat eva ag t D rettet desbe 28 SO TEST RUN
16. Y OUTER PIPE T2 T2B HEATER switch GAN Jee YIG ROOM TEMP Y G cN44 lt CN406 CN405 P Li 3 5 RELAY BOARD p CN10 4 4 J bo 4 3 us 2 MAIN BOARD cu 9 5 White Blue CN14 1 pp 22 CN4 Blue White Black 3 Red CN14 2 Red ay 7 Oo Black A DISPLAY WS BOARD Swing Comm Bus CODE PART NAME COMP COMPRESSOR CAP1 CAP2 FAN MOTOR CAPACITOR CAP5 450VAC CAPACITOR AC CURRENT DETECTOR D1 3 PHASE RECTIFIER D2 1 PHASE RECTIFIER ES EEV EXPANSIVE IPM MODULE FAN FAN OUTDOOR FAN MOTOR gt HEAT CRANKCASE HEATING H PRO HIGH PRESSURE SWITCH REACTOR Leno Low PRESSURE SWITCH AC CONTACTOR PTC1 PTC2 PTC ELEMENT sv AWAY VALVE Ta CONDENSER TEMPERATURE SENSOR T4 OUTDOOR AMBIENT TEMPERATURE SENSOR X AWAY TERMINAL Xm SWAY TERMINAL 8 ferite bead 5 3 XT1 Dr qu TO INDOOR COMM BUS NOTE PLEASE USE EOWER SUPPEY 3 CORE SHIELDED WIRE 5 Installation details 5 1 Installation place 5 1 1 Indoor Unit a A place which provides the spaces around the indoor unit as required above in the diagram b A place where is no obstacle near the inlet and outlet area c A place which can bear the weight of the indoor unit d A place which allows the air filter to be removed downward e A place where the reception range is not e
17. e Take care to ensure that power cable could not be pulled out or damaged during operation Do not place anything on the power cable Do not plug or unplug the power supply plug during operation Do not store or use flammable gas or combustible near the product When flammable gas leaks turn off the gas and open a window for ventilation before turn the product on If strange sounds or small or smoke comes from product Turn the breaker off or disconnect the power supply cable as soon as possible When the product is soaked flooded or submerged contact an Authorized service center Be caution that water could not enter the product Turn the main power off when cleaning or maintaining the product When the product is not be used for a long time disconnect the power supply plug or turn off the breaker 1 3 Caution Always check for gas refrigerant leakage after installation or repair of product Install the drain hose to ensure that water is drained away properly Keep level even when installing the product Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods Use two or more people to lift and transport the product Do not install the product where it will be exposed to sea wind salt spray directly 1 4 Operational Do not expose the skin directly to cool air for long periods of time Do not sit in the draft Do not use the product for special purposes such as pres
18. er turn off the air conditioner before disconnecting the hose 6 Mounted the valve stem caps and the service port Use torque wrench to tighten the service port cap to a torque of 18N m Be sure to check for gas leakage 27 5 4 Drain Pipe of The Indoor Unit Drain Pipe Glue Drain pipe Band for covering the pipe 1 Make sure the drain pipe is connected to the outdoor side downward 2 The hard polyvinyl chloride PVC plastic pipe external diameter 26 mm sold is the market is suitable for the attached soft drain pipe 3 Please connect the Soft Drain Pipe with the Drain Pipe then fix it with band 4 If you have to connect the Drain Pipe indoors to avoid condensing caused by air intake you must cover the pipe with heat insulation material polyethylene with Specific Gravity of 0 03 at least 9 mm in thickness and use Glue Band to fix it 5 After the Drain Pipe has been connected please check if the water drains out of the pipe efficiently and has no leakage 6 Refrigerant pipe and Drainpipe should be heat insulated to avoid condensing and water dropping later on 5 5 Wiring Please refer to the Wiring Diagram Power supply Power cord of Indoor unit Main Switch usa Locally purchased Indoor outdoor unit connective cable H signal wire Indoor outdoor unit connective cables x Indoor A Qutdoor unit Unit 1 Power supply Power cord of Indoor unit Main Switch Fuse m
19. erving foods works of art etc It is a consumer air conditioner not a precision refrigerant system Do not block the inlet or outlet of air flow Use a soft cloth to clean Do not use harsh detergents solvents etc Do not touch the metal parts of the product when removing the air filter They are very sharp Do not step on pr put anything on the product outdoor units Always insert the filter securely Clean the filter every two weeks or more often if necessary Do not insert hands or other object through air inlet or outlet while the product is operated Do not drink the water drained from the product Use a firm stool or ladder when cleaning or maintaining the product 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 Do not recharge or disassemble the batteries Do not dispose of batteries in a fire If 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 2 Dimension 2 1 Indoor Unit Dimension vi Mode mm D mm H mm MFGA 60ARDN1 QC2 610 390 1925 2 2 Outdoor Unit MODEL MOU 60HDN1 R 940 600 376 400 340 360 1245 3 Refrigerant cycle diagram INDOOR HEAT EXCHANGE EVAPORATOR
20. g higher T2 gt TE2 the indoor fan will run at setting speed TE1 lt T2 lt TE2 the indoor fan will run at low speed 33 When T2 is getting lower 4 lt 2 lt the indoor fan will run at low speed T2 lt TE4 the indoor fan will shut off T2 TE2 TE1 4 l 4 Setting A Ze N Re Low Off While TE1 30 TE2 35 TE3 32 TE4 26 8 2 3 Defrost only available to heating mode 8 2 3 1 Condition of defrosting The units run with T3 lt 2 C for 40 minutes 8 2 3 2 Defrosting Action 34 E Defrosting offe Required frequency Anti cold winde 300 For 6 mine 8 2 3 3 Ending Of Defrosting Condition Only if one of the following items is satisfied 1 Time of defrosting lasts 10 minutes 2 Temperature of outdoor coil T3 is up to 15 3 AC has changed to other modes or shut off 8 2 3 4 PTC function 1 Open conditions If all the following conditions are satisfied the PTC will open Indoor fan is Compressor is on Indoor evaporator temperature T2 lt 40 T1 3 lt 5 6 2 Close conditions If one of the following conditions is satisfied the PTC will close T1 3 gt TS No capacity requirement compressor is off Indoor fan is off Indoor evaporator temperature T2 gt 52 If the PTC opens the indoor fan will be closed 15sec delay 8 2 4 Co
21. necting surface with refrigerant oil 2 Check and make sure there is no leakage by soap water or leakage checker after connecting 3 Be sure the connecting joint on the indoor side is insulated 4 Use two wrenches to connecting the pipes Torque wrench 2 dd Spanner Indoor unit Additional Outside diameter Torque tightening torque mm inch N cm N cm 9 52 3 8 2500 2600 12 7 1 2 3500 3600 16 5 8 4500 4700 19 3 4 6500 6700 5 3 3 Installation for the first time Air and moisture in the refrigerant system have undesirable effects as below Pressure in the system rises Operating current rises Cooling or heating efficiency drops Moisture in the refrigerant circuit may freeze and block capillary tubing Water may lead to corrosion of parts in the refrigerant system Therefore the indoor units and the pipes between indoor and outdoor units must be leak tested and evacuated to remove gas and moisture from the system Gas leak check Soap water method Apply soap water or a liquid neutral detergent on the indoor unit connections or outdoor unit connections by a soft brush to check for leakage of the connecting points of the piping If bubbles come out the pipes have leakage 1 Air purging with vacuum pump Indoor unit VIA Liquid side E Outdoor unit V EE N Z
22. nnect the charge hose from the vacuum pump 2 Refrigerant charging 25 Indoor unit Y EZAN Liquid side a qm 2 way vane Gas side Charging cylinder Electronic scale Outdoor unit X Procedure 1 Connect the charge hose to the charging cylinder open the 2 way valve and the 3 way valve Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder If the refrigerant is R410A make the cylinder bottom up to ensure liquid charge 2 Purge the air from the charge hose Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air be careful of the liquid refrigerant 3 Put the charging cylinder onto the electronic scale and record the weight 4 Open the valves Low side on the charge set and charge the system with liquid refrigerant If the system cannot be charge with the specified amount of refrigerant or can be charged with a little at a time approximately 150g each time operating the air conditioner in the 26 cooling cycle however one time is not sufficient wait approximately 1 minute and then repeat the procedure 5 When the electronic scale displays the proper weight disconnect the charge hose from the 3 way valve s service port immediately If the system has been charged with liquid refrigerant while operating the air condition
23. nsult with the dealer a A place full of machine oil b saline place such as coast c Hot spring resort d A place full of sulfide gas e A place where there are high frequency machines such as wireless installation welding machine medical facility f A place of special environmental conditions 5 1 2 2 If the outdoor unit is to be installed on a roof or where no constructions are around you should avoid hard wind blows directly to the air outlet because itmaycause trouble for air flow shortage For example Let the air outlet face a wall if there is one with a distance about 300 centimeters bet Try to make the air outlet vertical to wind direction if it is known in the season you use ween them the system E Strong Wind gt l 1 b Strong Wind en Air Out In directions A B leave open two of the three directions 5 1 2 3 Reserve enough space for installation maintenance and unit functioning Remove as many obstacles as possible nearby When the air in surface is facing a wall When the air out surface is facing a wall Wall or Obstacle Air In gt 30cm Maintenance Side v Maintenance A Ur en Maintenance L I Side Side Air Out lt gt gt 300cm gt 50cm ad t p 7 Air Out gt 50 Wall or Obstacle 5 2 Installing 5 2 1 Indoor Unit 1 Anti falling To prevent the indoor unit from falling
24. oling Mode 8 2 4 1 Four way valve is closed If four way valve is open before the machine enters cooling mode then four way valve will 35 be closed at the first time the compressor starts under the cooling mode 8 2 4 2 Conditions for the compressor and outdoor fan action Ts set temperature TI TS A a 4 x3 gt 2 1 c gt 0 1 d gt a b q 3 2 2 0 Capacity demand a b c d xHPx A 1 A2 A1 is the factor depending on the outdoor ambient temp 2 is the factor depending on the evaporator coil outlet temp According to the capacity demand the compressor will run at the corresponding frequency 8 2 4 3 Action of Indoor Fan HIGH LOW AUTO fan can be switched over by your comfort Auto fan under cooling mode T1 Ts T 3 H 2 8 2 4 4 Outdoor Fan T4 L 14C 8 2 5 Dehumidifying Mode 8 2 5 1 Indoor fan speed is low 8 2 5 2 Four way valve is closed the compressor and outdoor fan will operate the same as in cooling mode 8 2 6 Auto Mode When entering auto mode the heating fan only or cooling operation will be automatically chosen 36 according to the room temperature T1 and the set temperature Ts Condition Mode T1 Ts 2 C Cooling 1 C lt T1 Ts lt 2 C Fan T1 Ts lt 1 C Heating 8 2 7 Fan Only Mode 8 2 7 1 Temperature setting function is disabled and no setting temperature is displayed 8 2 7 2 Under this mode four way val
25. on the 2 way valve approximately 45 for 3 seconds then closing it for 1 minute repeat 3 times 23 After purging the air use a torque wrench to tighten the flare nut on the 2 way valve 4 Check the gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant Close the valve on the charging cylinder and discharge the refrigerant by loosening the flare nut on the 2 way valve approximately 45 until the gauge indicates 0 3 to 0 5 Mpa 6 Disconnect the charge set and the charging cylinder and set the 2 way and 3 way valves to the open position Be sure to use a hexagonal wrench to operate the valve stems 7 Mount the valve stems nuts and the service port cap Be sure to use a torque wrench to tighten the service port cap to a torque 18N m Be sure to check the gas leakage 24 5 3 6 Re installation while the outdoor unit need to be repaired 1 Evacuation for the whole system Fa a p 4 indoor unit Liquid side Outdoor unit 2 way valve Procedure 1 Confirm that both the 2 way and 3 way valves are set to the opened position 2 Connect the vacuum pump to 3 way valve s service port 3 Evacuation for approximately one hour Confirm that the compound meter indicates 0 1Mpa 4 Close the valve Low side on the charge set turn off the vacuum pump and confirm that the gauge needle does not move approximately 5 minutes after turning off the vacuum pump 5 Disco
26. the gas leakage 3 Adding the refrigerant if the pipe length gt 5m R Indoor unit Liquid e Outdoor unit 2 2 way valve PV Charging Cylinder Electronic scale EN Procedure 1 Connect the charge hose to the charging cylinder open the 2 way valve and the 3 way valve Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder If the refrigerant is R410A make the cylinder bottom up to ensure the liquid charge 2 Purge the air from the charge hose Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air be careful of the liquid refrigerant 3 Put the charging cylinder onto the electronic scale and record the weight 4 Operate the air conditioner at the cooling mode 5 Open the valves Low side on the charge set and charge the system with liquid refrigerant 6 When the electronic scale displays the proper weight refer to the table disconnect the 18 charge hose from the 3 way valve s service port immediately and turn off the air conditioner before disconnecting the hose 7 Mount the valve stem caps and the service port Use torque wrench to tighten the service port cap to a torque of 18N m Be sure to check for gas leakage 5 3 4 Adding the refrigerant after running the system for many years Liquid side _ Outdoor unit
27. the outdoor protection occurs 39 Self diagnosis Evaporator low temp protection Defrosting or anti cold air x PO pao 3 Outdoor unit protection outdoor temp sensor is circuit or EN E1 Communication protection between indoor and outdoor EN op dil Temp sensor T1 is open circuit or short circuit Temp sensor T2 is open circuit or short circuit Temp sensor T2B is open circuit or short circuit EEPROM chip malfunction 10 3 Troubles and Solutions Before calling for service please review the following list of common problems and solutions Problem Possible Cause Solutions Air conditioner Power failure Wait for power restoring does not The power supply is disconnected Switch on the main power operate at all switch The power fuse is blown Change the fuse The timer is set Wait or cancel timer setting The batteries of the remote control are exhausted Change the batteries Air conditioner The temperature setting is too high Set a more comfortable does not or too low temperature cool or The air filter is clogged with dust Clean the filter heat well The air inlet or outlet of the outdoor Clear up the block unit is blocked Doors or windows are open Close the doors or windows Air conditioner The air inlet or outlet of the outdoor Clear up the block first then does not unit is blocked begin to operate cool or Three
28. ure of refrigerant pipe first unscrew the two valves on the outdoor unit and the pipe jointing nut on the indoor unit please keep them care fully Please connect the refrigerant pipe according to the manual the pipe jointing nut should be screw tightly and no leakage Note you need two wrenches to make balance d When the connecting of refrigerant pipe is finished before power on the system you 11 should vacuum the indoor unit through the maintenance port on the cut off valves or open the high pressure valve and exhaust the air through the maintenance port on the low pressure valve closed It will take about ten seconds Then screw tightly the maintenance port When supplement the refrigerant fill through the maintenance port of the low pressure valves on the outdoor unit Open all the valves completely before power on the system or it will be sick for low efficiency f Gas leak check Make sure no gas from connections with leak detector or soap water Caution A Lo packed valve B Hi packed valve C and D are ends of indoor unit connection Indoorunit checkpoint H Electricalbox Outdoor unit ___ check point Caution in Handling the Packed Valve a Open the valve stem until it hits against the stopper Do not try to open it further b Securely tighten the valve stem cap with a spanner or the link Flare nut Outdoor unit Refrigerant Indoor unit A 9 52mm 12 7mm Cf
29. ve compressor and outdoor fan are shut down 8 2 7 3 High Low Auto fan can be switched over through manual control Auto fan will be controlled in line with cooling auto fan with temperature set to be 24 C T1 24 8 3 Other Functions 8 3 1 LCD display Mode Set temp fan speed time timer protection etc 8 3 2 Timer The machine should be provided with max Interval of 24h and min resolution ratio of 30 minutes 37 9 Characteristic of temperature sensor Temp 0 622756 17 1461801 44 58709 8 13908 4 8 563694 19 132631 46 7 522435 20 126491 4 amp 7 6 493161 21 120561 48 5 455 2 45 4 55 57 58 59 6 1 3 5 9 1245 91245 87198 31 5635 8 3357 7 5 23 3 2 2 25 1 EET 35204 27 9 1 33369 8 55 2 8 5 29908 30 798 5 4 7 58 5 2 7 59 60 7 0 1 2 22562 3 6 21804 36 6136 63 207184 37 5876 64 38 5 6 00 2 2 2 2 2 2 2 2 3 3 1 1 2 ESSEN WEE E ee 2 re rA 4 233459 5 SEN EE CE 10 BETA 19 6891 6 187177 39 53969 17 18 19 0 1 3 4 5 7 8 9 0 31 32 35 37 8 39 5 0 2 9814 6835 002 6 3969 2 3577 22725 2 1907 6 3 17805 40 51582 6 48 LH 169341 41 49639 6 17605 1
30. xposed to direct sunlight f In the center of the room where possible 5 1 1 1 Please stand the unit in hard and flat ground Please reserve space for installation and maintenance wall or obstacle Rear 230 cm min 4 AAA em Front gt 200em 10cm min 10cm min Piping side Piping side 30cm min is necessary 30cm min is necessary Le NS 5cm min 5 1 1 2 Please check the elevation difference between the indoor unit and the outdoor unit the length of the refrigerant pipe and the curved places bend of the pipe are no more than the following numbers Elevation difference no more than 10M if the elevation difference between indoor and outdoor unit is more than 10 meters it is recommended that the indoor unit be located higher than the outdoor unit Pipe length no more than 20M Bends no more than 3 places 5 1 2 Outdoor Unit 5 1 2 1 Before installing the outdoor unit you should a Select a place where no direct sunlight or other heat radioactivity may reach A sunshade is needed if it is unavoidable b Select a place that is easy to connect indoor unit s pipe and electric wires c Avoid a place where combustible gas may leak or stay d Keep it in mind that water may drain out of the outdoor unit while in Heat mode Caution Installation in the following places may cause trouble If it is unavoidable to use in such places please co
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