SERVICE MANUAL
Contents
1. 0 1MPa Q Handle Lo B U hose F Charge hose Vacuum pump Vacuum pump 1 Completely tighten the flare nuts of the indoor and outdoor units confirm that both the 2 way and 3 way valves are set to the closed position 2 Connect the charge hose with the push pin of handle lo to the 3 way valves gas service port 3 Connect the charge hose of handle hi connection to the vacuum pump 4 Fully open the handle Lo of the manifold valve 5 Operate the vacuum pump to evacuate 6 Make evacuation for 30 minutes and check whether the compound meter indicates 0 1Mpa If 16 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 indicator is a little higher than the atmosphere pressure Then remove the charge hose from the 3 way valve 8 Fully open the 2 way valve and 3 way valve and securely tighten the cap of the 32. 48 9 2 5 Open circuit or short circuit of temperature sensor diagnosis and solution E4 E5 F1 F2 F3 Check the connections perween temperature No Correct the connections sensor and PCE Are the connections good Yes Check the resistance value of the sensor via table Yes gt and table 2 is it norma No Replace the sensor anc check if the problem happen agair Replace indoor or outdoor PCE 49 9 2 6 Refrigerant Leakage Detection diagnosis and solution EC Shut off the power supply and turn it on 5 seconds later Is it still displaying the error code Yes Y Check if T2 sensor is well Is there cool air blowing fixed Correct the installation Yes out from indoor air outlet or replace T2 sensor Does the problem remain again 9 i i Is there any leakage Especially Replace indoor PCB the connection parts such as the gas valve and the liquid valve Yes No Repair the leakage and l recharge the refrigerant Is there any blocking Such as the capillary or the welded points of the pipes Yes Y Clear the blocking 50 9 2 7 Outdoor fan speed has been out of control diagnosis and solution F5 Shut off the power supply and turn it or 5 seconds latet Is il gt still displaying the error co
3. 46 1 Precaution 1 1 Safety Precaution B prevent injury to the user or other people and property damage the following instructions must be followed B incorrect operation due to ignoring instruction will cause harm or damage B Before service the unit be sure to read this service manual at first 1 2 Warning Installation B Donot 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 authorized service center Do not disassemble or repair the product there is risk of fire or electric shock B q Always ground the product There is risk of fire or electric shock B install the panel and the cover of control box securely There is risk of fire of electric shock B Always install a dedicated circuit and breaker Improper wiring or installation may cause fore or electric shock B Use the correctly rated breaker of fuse There is risk of fire or electric shock B Donot modify or extend the power cable There is risk of fire or electric shock B Donotinstall remove or reinstall the unit by yourself customer There is risk of fire electric shock explosion or injury B Be caution when unpacking and installing the product Sharp edges could cause injury be especially careful of the case edges and the fins on the condenser and eva
4. Electronic scale 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 19 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 6 6 Re installation while the indoor unit need to be repaired 1 Collecting the refrigerant into the outdoor unit indoor unit rq ms RD Liquid Outdoor unit 1 le A l way TUM af Close Procedure 1 Confirm that both the 2 way and 3 way valves
5. bave e e e eda ean a e e ee rna ec Bon pita ke 14 6 3 Pipe length and the elevation ssssssssssssesses nan ao onon san eene nennen 15 6 4 Installation forthe first ime concrete ett eee a ne eet 16 6 5 Adding the refrigerant after running the system for many years 19 6 6 Re installation while the indoor unit need to 20 6 7 Re installation while the outdoor unit need to be repaired 22 7 Operation Cliaracteristics een oneadoneponsD c ndac pdcodp csd nnp ndnauud 8 26 BSSLADD FEV IA ON e dist ap an ane 26 9 2 Display fUnctlOn c ettet erben teet eee a ka 26 9 3 Main Protection eae 27 8 4 Operation Modes and Functions ssssssssssssssssee eene nennen nennen 30 9 Troubleshooting ccce hee ke cope te u Lula De De eu n eu Rn tu ex eu Cn a en Du De Du Be Duce 45 9 1 Indoor Unit Error DIsplay e t t rete tte Potete ee es 45 9 2 Diagnosis et er
6. 41 8 4 5 3 Low indoor room temperature protection In drying mode if room temperature is lower than 10 C the compressor will stop and not resume until room temperature exceeds 12 C 8 4 5 4 Evaporator anti freezing protection condenser high temperature protection and outdoor unit frequency limit are active and the same as that in cooling mode 8 4 5 5 The outdoor fan operates the same as in cooling mode 8 4 6 Forced operation function 8 4 6 1 Enter forced operation function When the machine is off pressing the touch button will carry the machine to forced auto mode If pressing the button once again within 5 seconds the machine will turn into forced cooling mode In forced auto forced cooling or any other operation mode pressing touch button will turn off the machine 8 4 6 2 In forced operation mode all general protections and remote control are available 8 4 6 3 Operation rules Forced cooling mode The compressor runs at F2 frequency and indoor fan runs as breeze After running for 30 minutes the machine will turn to auto mode as 24 C setting temperature Forced auto mode The action of forced auto mode is the same as normal auto mode with 24 C setting temperature 8 4 7 Timer function 8 4 7 1 Timing range is 24 hours 8 4 7 2 Timer on The machine will turn on automatically when reaching the setting time 8 4 7 3 Timer off The machine will turn off automatically when reaching the setting time 42 8 4
7. 8 4 2 1 Compressor running rules The maximum operation frequency of compressor after starting submits to following rule T4 t 50 49 45 41 40 33 32 30 29 22 20 a Fmax T4FREMAX1 Fmax T4FREMAX2 Fmax TAFREMAX3 Fmax T4FREMAX4 Fmax T4FREMAX5 Fmax T4FREMAX6 Fmax T4FREMAX7 Meanwhile the maximum frequency is limited by the indoor fan speed Indoor fan speed Maximum frequency High speed turbo function No limit Silent mode Fixed at F3 If users switch on AC by remote controller the compressor will run at the Fmax frequency for 7 minutes according to the outdoor ambient temp During the 7 minutes the frequency limitation is active 7 minutes later the compressor running frequency will be controlled as below 31 NS f i e Lie EL len While the zones of A B C are corresponding to different compressor running frequency Note When T1 Ts keeps in the same temp zone for 3 minutes the compressor will run as the below rules A Increase the frequency to 3 grade higher until to FREMAX B E Increase the frequency to 2 grade higher until to FREMAX F G Increase the frequency to 1 grade higher until to FREMAX H Keep the current frequency l Decrease the frequency to 1 grade lower until to F1 J Run at F1 for 1h if T1 Ts lt 2 C the compresso
8. Measure the resistance value of each winding by using the multi meter Table 1 Some frequently used R T data for T1 T2 T3 and 4 sensor Trenpeawer s oo 2 w 9 9 vane o 269 7 ws vs v e sz as 2a Table 2 Some frequently used R T data for T5 sensor 9 7 9 w wo Resistance vaue Kay isse ss s 97 Resistance value KQ 200 180 4 160 140 120 EEE 100 E 90 1 60 es 40 2 3 4 55 Ii Im 9 01 a 0 5 10 15 20 25 30 35 40 45 50 Temperature 56
9. 180AE1 FSOAI Pro 180AE1 FSAI Pro 120AE1 FSOAI Pro 120AE1 FSAI Pro 240AE1 FSOAI Pro 240AE1 Indoor unit Indoor unit Outdoor unit Caution The capacity test is based on the standard length and the maximum permissive length is based on the system reliability The oil trap should be installed per 5 7 meters 6 4 Installation for the first time Air and moisture in the refrigerant system have undesirable effects as below Pressure in the system rises Operating current rises Cooling or heating efficiency drops Moisture in the refrigerant circuit may freeze and block capillary tubing Water may lead to corrosion of parts in the refrigerant system Therefore the indoor units and the pipes between indoor and outdoor units must be leak tested and evacuated to remove gas and moisture from the system Gas leak check Soap water method Apply soap water or a liquid neutral detergent on the indoor unit connections or outdoor unit connections by a soft brush to check for leakage of the connecting points of the piping If bubbles come out the pipes have leakage 1 Air purging with vacuum pump Indoor unit Liquid side Outdoor unit Two way valve Si Close Gas side Manifold valve Compound meter ZO ale c re Pressure P gauge ri
10. 2 T3 Run with compressor frequency 3 minutes defrosting every 40 not higher than F14 minutes when T4 7 C 2 minutes defrosting every 90 minutes when T427 C T4 Run supposed T4 50 C Run supposed T4 15 C TP Run supposed T4 50 C Run supposed T4 15 C T1 l T1 d t Si F4 F12 25 18 23 F12 Indoor fan 1 minute off 1 minute M ane then F4 30 minutes on 3 the setting fan speed minutes off table 1 8 4 10 Refrigerant leakage detection table 2 This function is only active in cooling mode It can better prevent the compressor being damaged by refrigerant leakage or compressor overload Open condition Define the evaporator coil temp T2 of the compressor just starts running as Tcool In the beginning 5 minutes after the compressor starts up if T2 lt Tcool 2 C does not 28 continuous 4 seconds and this situation happens 3 times the display area will show and AC will turn off 29 8 4 Operation Modes and Functions 8 4 1 Fan mode 1 Outdoor fan and compressor stop 2 Temperature setting function is disabled and no setting temperature is displayed 3 Indoor fan can be set to high med low auto 4 The louver operates same as in cooling mode 5 Auto fan For 24K unit For other models T1 24 TI 27 5 27 25 5 25 High Medium Low 30 H H L 0 75 L 1 0 5 1 1 0 25 1 L 8 4 2 Cooling Mode
11. 5 While the zones of A B C are corresponding to different compressor running frequency AT 0 C as default Note When T1 Ts keeps in the same temp zone for 3 minutes the compressor will run as the below rules A Increase the frequency to 3 grade higher until to FREMAX B E Increase the frequency to 2 grade higher until to FREMAX F G Increase the frequency to 1 grade higher until to FREMAX H Keep the current frequency l Decrease the frequency to the 1 grade lower until to F1 J Run at F1 for 1h if T1 Ts AT gt 6 C the compressor will stop 36 Meanwhile the compressor running frequency is limited by the current T4 HeatT4Zone4l 15 14 HeatT4Zone3l 9 0 dm HeatT4Zone2l 5 0 HeatT4Zone1l 8 4 3 2 Outdoor fan running rules Heating A T4 21 19 18 16 15 13 12 10 In heating mode indoor fan can be selected as high medium low auto and silent The anti cold wind function is preferential The running rules of anti cold wind function depend on both T1 and T2 that is more comfortable control 8 4 3 3 Indoor fan running rules When the compressor is running the indoor fan is controlled as below a nn 2 MOU speed A m fr L L L D L A m No eT aH HG If the compressor stops caused by the room temperature rising the indoor fan will be forced to run 127 seconds with b
12. C m C 7 Gas side Check valve a a Charging cylinder Electronic scale Procedure 1 Connect the charge hose to the charging cylinder open the 2 way valve and the 3 way valve Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder If the refrigerant is R410A make the cylinder bottom up to ensure the liquid charge 2 Purge the air from the charge hose Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air 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 18 6 When the electronic scale displays the proper weight refer to the table disconnect the charge hose from the 3 way valve s service port immediately and turn off the air conditioner before disconnecting the hose 7 Mount the valve stem caps and the service port Use torque wrench to tighten the service port cap to a torque of 18N m Be sure to check for gas leakage 6 5 Adding the refrigerant after running the system for many years nec AZ Liquid kdo Outdoor unit D v7 2 1 2 way vave N Gas side z MOM Check valve Charging cylinder OO
13. 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 20 5 Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0 1MPa 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 18N m Be sure to check for gas leakage 2 Air purging by the refrigerant Gas side I way Charging cylinder Procedure 1 Confirm that both the 2 way and 3 way valves are set to the closed position 2 Connect the charge set and a charging cylinder to the service port of the 3 way valve Leave the valve on the charging cylinder closed 3 Air purging Open the valves on the charging cylinder and the charge set Purge the air by loosening the flare nut on the 2 way valve approximately 45 for 3 seconds then closin
14. the timing is more than 7 hours the machine will not stop until reaches the setting time in sleep mode 8 4 9 Auto Restart function The indoor unit is equipped with auto restart function which is carried out through an auto restart module In case of a sudden power failure the module memorizes the setting conditions before the power failure The unit will resume the previous operation setting not including swing function automatically after 3 minutes when power returns If the memorization condition is forced cooling mode the unit will run in cooling mode for 30 minutes and turn to auto mode as 24 C setting temp If AC is off before power off and AC is required to start up now the compressor will have 1 minute delay when power on Other conditions the compressor will have 3 minutes delay when restarts 43 8 4 10 8 C Heating optional In heating operation the preset temperature of the air conditioner can be as lower as 8 C which keeps the room temperature steady at 8 C and prevents household things freezing when the house is unoccupied for a long time in severe cold weather 44 9 Troubleshooting 9 1 Indoor Unit Error Display Open circuit or short circuit of indoor room temperature T1 5 times X E4 sensor Open circuit or short circuit of evaporator coil temperature x 6 times X E5 T2 sensor Open circuit or short circuit of outdoor ambient T4 2times F1 temperature sensor Open circuit or short circuit of con
15. values are Nc the main PCB if the IPM board anc uniforrr main PCB are integrated together Yes a Refer to the solution of fan speec Check if the outdoor fan runs has beemoutoteontro properly or the outdoor unit Ne C malfunction Find out the cause ventilation is good and have it solved Yes y Check if the compressor resistance Nc Replace the compressor values are uniforrr Yes Y Replace the outdoor main PCB if the main PCB and IPM are separate 54 Safety Electricity power is still kept in capacitors even the power supply is shut off Do not forget to discharge the electricity power in capacitor Electrolytic Capacitors HIGH VOLTAGE CAUTION Connect discharge resistance approx 100Q 40W or soldering iron plug between terminals of the electrolytic capacitor on the contrary side of the outdoor PCB Discharging position Discharging period 10 seconds or more Plug of soldering a Note The picture above is only for reference The plug of your side may be different Main parts check 1 Temperature sensor checking Disconnect the temperature sensor from PCB measure the resistance value with a tester Tester 55 Temperature Sensors Room temp T1 sensor Indoor coil temp T2 sensor Outdoor coil temp T3 sensor Outdoor ambient temp T4 sensor Compressor discharge temp T5 sensor
16. will be active immediately and the indoor fan will open 10s later If the unit runs in heating mode the indoor fan will be also controlled by anti cold wind function 8 3 7 Compressor preheating functions Preheating permitting condition If T4 outdoor ambient temperature 3 C and the machine connects to power supply newly or if T4 3 C and compressor has stopped for over 3 hours the compressor heating cable will work Preheating mode A weak current flow through the coil of compressor from the wiring terminal of the compressor then the compressor is heated without operation Preheating release condition 27 If T4 gt 5 C or the compressor starts running the preheating function will stop 8 3 8 Zero crossing detection error protection except 24k unit If AC detects time interval is not correct for continuous 240s the unit will stop and the LED will display the failure The correct zero crossing signal time interval should be between 6 13ms 8 3 9 Sensor protection at open circuit and breaking disconnection When there s one temperature sensor in malfunction the air conditioner will display error code and will not stop immediately to avoid the case that the air conditioner is in urgent need Fault temp Operation in cooling drying and Operation in heating mode sensor fan only mode T1 Run supposed T1726 C high fan Run supposed T1726 C high fan speed speed T2 Refer to table 1 Refer to table
17. 7 4 Timer on off The machine will turn on automatically when reaching the setting on time and then turn off automatically when reaching the setting off time 8 4 7 5 Timer off on The machine will turn off automatically when reaching the setting off time and then turn on automatically when reaching the setting on time 8 4 7 6 The timer function will not change the AC current operation mode Suppose AC is off now it will not start up firstly after setting the timer off function And when reaching the setting time the timer LED will be off and the AC running mode has not been changed 8 4 7 7 The setting time is relative time 8 4 8 Sleep function mode 8 4 8 1 Operation time in sleep mode is 7 hours After 7 hours the AC quits this mode and turns off 8 4 8 2 Operation process in sleep mode is as follow When cooling the setting temperature rises 1 C be lower than 30 C every one hour 2 hours later the setting temperature stops rising and indoor fan is fixed as low speed When heating the setting temperature decreases 1 C be higher than 17 C every one hour 2 hours later the setting temperature stops rising and indoor fan is fixed as low speed Anti cold wind function has the priority 8 4 8 3 Timer setting is available 8 4 8 4 When user uses timer off function in sleep mode or sleep function in timer off mode if the timing is less than 7 hours sleep function will be cancelled when reaching the setting time If
18. A dirty filter reduces the efficiency of the air conditioner and could cause product malfunction or damage B Donotinsert hands or other objects through air inlet or outlet while the product is operated B Do not drink the water drained from the product Usea firm stool or ladder when cleaning or maintaining the product Be careful and avoid personal injury B d Replace the all batteries in the remote control with new ones of the same type Do not mix old and new batteries or different types of batteries There is risk of fire or explosion B Do not recharge or disassemble the batteries Do not dispose of batteries in a fire They may burn of explode B Ifthe liquid from the batteries gets onto your skin or clothes wash it well with clean water Do not use the remote of the batteries have leaked 2 Function Model Names of Indoor Outdoor Units DC Inverter Capacity Indoor units Outdoor units 9k FSAI Pro 90AE1 FSOAI Pro 90AE1 12k FSAI Pro 120AE1 FSOAI Pro 120AE 1 18k FSAI Pro 180AE1 FSOAI Pro 180AE 1 24k FSAI Pro 240AE1 FSOAI Pro 240AE 1 Filter Killer of Formaldehyde lonizer Silverlon Filter Cold Catalist Filter 1W standby Follow me Golden Fin Self Clean Self diag function O optional function Anti rust cabinet Valve protection cover Compressor Crankcase Heater O 18k 24k units 3 Dimension 3 1 Indoor Unit FSAI Pro 90AE1
19. Cmm Aircon Solutions Ltd SERVICE MANUAL Room Air Conditioner Split Wall Mounted Type FSAI Pro 90AE1 FSOAI Pro 90AE1 FSAI Pro 120AE1 FSOAI Pro 120AE1 FSAI Pro 180AE1 FSOAI Pro 180AE1 FSAI Pro 240AE1 FSOAI Pro 240AE1 NOTE Before servicing the unit please read this at first Always contact with your service center if meet problem FI SM FSAI Pro 90 120 180 240AE1 131015 CONTENTS UBI die e aE A 1 1 Safety pk d Ga e vn 3 AZA ANT ON sen e cis p MDC MM I et 3 TD LM 7 3 DIMONSION ii de ki e fete od Sa we da cada cada de dace da d dan Er 3 1 Indoor Unit oen rera tert ee temer eere ete comet ee e ea 8 93 2 Outdoor DA oct di edi te rire ete ete ADAN 9 4 Refrigerant Cycle Diagram ki ia ka kai ae kore ka aka eet nente reete terne t renta Dr e Pair caer 10 5 Wiring Diagram ecce ese ee eu eu Ru Ca RR Cu a a Da Cu DR CR DR Ru Ra kk ee ee Ke ke ese Ke ke EE aT Euge a aT Ee ye aT Rake 11 5 1 Indoor toc remet ente na P nnd e eee av e rre ma 11 522 Outdoor UI AN m ettet I eter ba deba kab ka iit UA 12 6 Installation DEtailS 42 izi NS 14 6 1 Wrench torque sheet for installation 0 c cceceececceeceeee eee cee ako aatt 14 6 2 Connecting
20. FSAI Pro 120AE1 FSAI Pro 180AE1 FSAI Pro 240AE1 FSAI Pro 90AE1 111 5 100 FSAI Pro 120AE1 83 5 835 us FSAI Pro 180AE1 FSAI Pro 240AE1 3 2 Outdoor Unit More than 30cm HM Mg More than 70cm More than 60cm More than 60cm Service space a ta 1 Air inlet W1 Model W D H wi A B FSOAI Pro 90AE1 780 250 540 843 549 276 FSOAI Pro 120AE1 780 250 540 843 549 276 FSOAI Pro 180AE1 760 285 590 823 530 290 FSOAI Pro 240AE1 845 320 700 908 560 335 4 Refrigerant Cycle Diagram HEAT EXCHANGE EVAPORATOR OUTDOOR CHECK VALVE LIQUID SIDE Heating Model only uA 2 WAY VALVE E CAPILIARY TUBE HEAT EXCHANGE CONDENSER e GAS SIDE 4 ku v gt 3 WAY VALVE REVERSING VALVE Heating Model only ACCUMULATOR gt gt 4 COOLING COMPRESSOR HEATING 5 Wiring Diagram 5 1 Indoor Un
21. SUPPLY FSOAI Pro 120AE1 FSOAI Pro 180AE1 OPTIONAL 7 202037391220 Even rp pate CE KFR26W BP3 PFC 120 D 13 MP 2 0 NOTE Four way vaive anaana is usedinthe OPTIONAL HEATER Qae Nl ndi RR OUTDOOR WIRING DIAGRAM 12 FSOAI Pro 240AE1 202038090849 OUTDOOR AMBIENT E 14 TEMPERATURE SENSOR MEATI e TO NDOOR UNIT POWER SUPPLY 13 6 Installation Details 6 1 Wrench torque sheet for installation Outside diameter Torque Additional tightening torque mm inch N cm N cm 06 35 1 4 1500 153kgf cm 1600 163kgf cm 09 52 3 8 2500 255kgf cm 2600 265kgf cm 012 7 1 2 3500 357kgf cm 3600 367kgf cm 015 9 5 8 4500 459kgf cm 4700 479kgf cm 019 3 4 6500 663kgf cm 6700 683kgf cm 6 2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet The cable size and the current of the fuse or switch are determined by the maximum current indicated on the nameplate which located on the side panel of the unit Please refer to the nameplate before selecting the cable fuse and switch 6 3 Pipe length and the elevation The pipe length and refrigerant amount Standard Additional length Elevation Length refrigerant Liquid m B m A m g m FSAI Pro 90AE1 FSOAI Pro 90AE1 5 20 20 3 8 1 4 FSAI Pro
22. air control feature is activated in heating mode RUN OPERATION indicator This indicator illuminates when the air conditioner is running TIMER Timer indicator This indicator illuminates when TIMER is set ON OFF 26 8 3 Main Protection 8 3 1 Time delay at restart for compressor 1 minute delay for the 1 time start up and 3 minutes delay for others 8 3 2 Temperature protection of compressor top The unit will stop working when the compressor top temp protector cut off and will restart after the compressor top temp protector restart 8 3 3 Temperature protection of compressor discharge When the compressor discharge temp is getting higher the running frequency will be limited as below rules Compressor discharge temp 5 gt 1157 for 5s compressor stops and restarts up till T5 lt 90 C 110 T5 115 C decrease the frequency to the lower level every 2 minutes 105 lt T5 lt 110 C keep running at the current frequency T5 105 C no limit for frequency 8 3 4 Fan Speed is out of control When Indoor Fan Speed keeps too low 300RPM for certain time the unit will stop and the LED will display the failure 8 3 5 Inverter module protection The Inverter module has a protection function about current voltage and temperature If these protections happen the corresponding code will display on indoor unit and the unit will stop working 8 3 6 Indoor fan delayed open function When the unit starts up the louver
23. all the drain hose to ensure that water is drained away properly A bad connection may cause water leakage B Keeplevel even when installing the product It can avoid vibration of water leakage B Donotinstall 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 B 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 5 could cause product malfunction or inefficient operation gt Operational B Donot expose the skin directly to cool air for long time Do not sit in the draft B Donotuse the product for special purposes such as preserving foods works of art etc It is a consumer air conditioner not a precision refrigerant system There is risk of damage or loss of property Do not block the inlet or outlet of air flow B 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 B Do not touch the metal parts of the product when removing the air filter They are very sharp B Do not step on or put anything on the product outdoor units B Always insert the filter securely Clean the filter every two weeks or more often if necessary
24. de Yes Y Shut off the power supply The unit operates normally rotate the fan by hand Does No it rotate properly Replace outdoor fan motor A Yes Check the wires of fan motor No Correct the connections Are all the connections good Yes Replace outdoor main PCE Is il Yes still displaying the error code 7 51 9 2 8 IPM malfunction or IGBT over strong current protection diagnosis and solution PO Check if the wiring between mair Correct the connection or PCB and compressor connected by l Yes gt replace the wires and error and if the wires and connectors connectors are broker Nc v Correct the installatior Check if the IPM installed correctly No gt tighten the screws and apply silicon grease Yes Y IPM continuity check Check if the Replace the IPM board or replace IPM terminal resistance values are Nc the main PCB if the IPM board anc uniforrr main PCB are integrated together Yes a Refer to the solution of fan speec Check if the outdoor fan runs has beemoutoteontro properly or the outdoor unit Ne C malfunction Find out the cause ventilation is good and have it solved Yes y Check if the compressor resistance Nc Replace the compressor values are uniforrr Yes Y Replace the outdoor main PCB i
25. denser coil temperature w 3 times F2 T3 sensor Open circuit or short circuit of compressor discharge T5 4 times F3 temperature sensor sins s re _ EICHEUNENCNUTTTT TIT NN EICHEUNENLITTTIIETCPTTON light X Coff x flash 45 9 2 Diagnosis and Solution 9 2 1 EEPROM parameter error diagnosis and solution EO Shut off the power supply and turn it or 5 seconds later Is il still displaying the error code Yes If the EEPROM chip is welded on mair PCB replace the mair PCB directly Otherwise check No Correct the connectior whether the EEPRON chip plugged in mair PCB wel Yes t Replace the indoor mair PCB EEPROM a read only memory whose contents can be erased and reprogrammed using a pulsed voltage 46 9 2 2 Indoor unit and outdoor unit communication protection error diagnosis and solution E1 Power off then turn on the unit 5 seconds later reconnect the power wire Is the error still displaying after several minutes Yes Check all the wirings between indoor anc outdoor indoor main PCB and outdoor main PCB following the wiring diagram Are al the wirings connected correctly Yes Measure Vs is it moving alternately between positive value and negative value V
26. f the main PCB and IPM are separate 52 9 2 9 Over voltage or too low voltage protection diagnosis and solution P1 Check if the power supply is Nc norma Yes Check if all the connections Nc and wires are gooc Yes t Power on and when the unit is ir standby check if the voltage between P and N is around DC 31C V or 34C V or 38C V For different kinds of units the voltage differs Nc Disconnect the unit with power supply and try to restart the unit when power supply gets normal Correct the connections or replace the wires Consult with technical engineer to gel definite value Then start up the uni measure the voltage betweer P and Is itin 22C V 40C V Yes t Replace outdoor mainl PCB gt Replace the IPM board if it is separate with main PCB 53 9 2 10 Inverter compressor drive error diagnosis and solution P4 Check if the wiring between mair Correct the connection or PCB and compressor connected by Yes gt replace the wires and error and if the wires and connectors connectors are broker Nc v Correct the installatior Check if the IPM installed correctly No gt tighten the screws and apply silicon grease Yes Y IPM continuity check Check if the Replace the IPM board or replace IPM terminal resistance
27. g 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 21 Close the valve on the charging cylinder and discharge the refrigerant by loosening the flare nut on the 2 way valve approximately 45 until the gauge indicates 0 3 to 0 5 Mpa 6 Disconnect the charge set and the charging cylinder and set the 2 way and 3 way valves to the open position Be sure to use a hexagonal wrench to operate the valve stems 7 Mount the valve stems nuts and the service port cap Be sure to use a torque wrench to tighten the service port cap to a torque 18N m Be sure to check the gas leakage 6 7 Re installation while the outdoor unit need to be repaired 1 Evacuation for the whole system fi Indoor unit Yo AN Liquid side p inde Si Outdoor unit Vacuum pump 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 Disconnect the charge hose from the vacuum
28. he breaker off or disconnect the power supply cable There is risk of electric shock or fire B Stop operation and close the window in storm or hurricane If possible remove the product from the window before the hurricane arrives 4 There is risk of property damage failure of product or electric shock B Do not open the inlet grill of the product during operation Do not touch the electrostatic filter if the unit is so equipped There is risk of physical injury electric shock or product failure B When the product is soaked contact an authorized service center There is risk of fire or electric shock B Be caution that water could not enter the product There is risk of fire electric shock or product damage B q Ventilate the product from time to time when operating it together with a stove etc There is risk of fire or electric shock B Turn the main power off when cleaning or maintaining the product There is risk of electric shock H 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 WB care to ensure that nobody could step on or fall onto the outdoor unit This could result in personal injury and product damage CAUTION B q Always check for gas refrigerant leakage after installation or repair of product Low refrigerant levels may cause failure of product B inst
29. it FSAI Pro 90AE1 FSAI Pro 120AE1 FSAI Pro 180AE1 202032591215 NOTE If used as MONO unit for the standby control needs the cross section area of cable connected to L 1 1 2 N must be sufficient for the maximum system current The maximum system current is equal to the sum of indoor unit and outdoor unit rated curent If used as MULTI unit L 1 on the terminal block does not need to be connected nc Ceo 1 1 1 1 1 1 1 a 1 1 INFAN M g HINT 3 2 a 5 1 H 5i g l 2 kil AJ 1 6 e g x 1 A y5 1 sS LOW ai LWE TE T5 pat 1 LI y OPTIONAL eEe ce T ES i OPTIONAL 7 CN12 1 CN12 2 Hyp au 1 iWire Contoller HEATER 4 E ed din L RE l wo E OUO T 8D NI EI oto A DISPLAY BOARD m cm oH kan i a LOPTIONAL j AC N by TOI SOR SEF ons Er 9 99 99 1046 1 m 99966 OUTDOOR UNIT FSAI Pro 240AE1 SWIMG 202033091043 BONIS eld 69 9 Ff NOTE As the standby control needs the cross section area of cable connected to 11 1 2 N must be selected to suit the maximum system current The maximum system current is equal to the sum of indoor unit and outdoor unit rated current 11 5 2 Outdoor Unit FSOAI Pro 90AE1 AMBIENT HEAT EXCHANGER INDOOR UNIT POWER
30. porator a For installation always contact the dealer or an authorized service center B Do not install the product on a defective installation stand B Be sure installation area does not deteriorate with age If the base collapses the air conditioner could fall with it causing property damage product failure and personal injury B Do not let the air conditioner run for a long time when the humidity is very high and a door or a window is left open WB care to ensure that power cable could not be pulled out or damaged during operation There is risk of fire or electric shock B Do not place anything on the power cable There is risk of fire or electric shock B Do not plug or unplug the power supply plug during operation There is risk of fire or electric shock B Donottouch operation the product with wet hands B Do not place a heater or other appliance near the power cable There is risk of fire and electric shock B Donotallow water to run into electrical parts It may cause fire failure of the product or electric shock B Donot store or use flammable gas or combustible near the product There is risk of fire or failure of product B Donotuse the product in a tightly closed space for a long time Oxygen deficiency could occur H When flammable gas leaks turn off the gas and open a window for ventilation before turn the product on H If strange sounds or smoke comes from product turn t
31. pressor frequency will be limited and decreased to the lower level 4 C T237 C the compressor will keep the current frequency T2 gt 7 C the compressor frequency will not be limited 34 8 4 3 Heating Mode 8 4 3 1 Compressor running rules The maximum operation frequency of the compressor after starting submits to the following rule T4 A 34 Off 33 28 Fmax T4FREHEATMAX1 27 25 Fmax T4FREHEATMAX2 24 22 Fmax TAFREHEATMAX3 d Fmax T4FREHBATMAX4 Fmax T4FREHEATMAX5 b Fmax T4FREHEATMAX6 2 Fmax TAFREHEATMAX7 6 max TAFREHEATMAX8 5 aw 1 Fmax T4FREHEATMAX9 0 Fmax F21 3 4 Fmax F22 7 8 Fmax F23 11 12 Fmax F24 Y 15 16 Fmax F25 35 Meanwhile the maximum frequency is limited by the indoor fan speed Indoor fan speed Maximum frequency Silent mode High speed 8 degree heating turbo function No limit Medium speed FHeatMaxMidFan Low speed sleep mode FHeatMaxLowFan Fixed at F3 If users switch on AC by remote controller the compressor will run at the Fmax frequency for 7 minutes according to outdoor ambient temp During the 7 minutes the frequency limitation is active 7 minutes later the compressor running frequency will be controlled as below T1 Ts d 5 0 j 45 a e 1 5 41 0 B 40
32. pump 22 2 Refrigerant charging TN Gas side Check valve Charging cylinder Electronic scale Procedure 1 Connect the charge hose to the charging cylinder open the 2 way valve and the 3 way valve Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder If the refrigerant is R410A make the cylinder bottom up to ensure liquid charge 2 Purge the air from the charge hose Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air be careful of the liquid refrigerant 3 Put the charging cylinder onto the electronic scale and record the weight 4 Open the valves Low side on the charge set and charge the system with liquid refrigerant If the system cannot be charge with the specified amount of refrigerant or can be charged with a little at a time approximately 150g each time operating the air conditioner in the cooling cycle however one time is not sufficient wait approximately 1 minute and then repeat the procedure 5 When the electronic scale displays the proper weight disconnect the charge hose from the 3 way valve s service port immediately If the system has been charged with liquid refrigerant while operating the air conditioner turn off the air conditioner before disconnecting the hose 6 Mounted the valve stem caps and the service port 23 Use torque wrench
33. r will stop Meanwhile the compressor running frequency is limited by the current T4 CoolT4Zone5l 50 49 CoolT4Zone4l 45 44 CoolT4Zone3l 40 33 CoolT4Zone2l 32 CoolT4Zone1l 32 8 4 2 2 Outdoor fan running rules Cooling 14 Y A 28 26 25 23 22 20 19 17 E While A B C means different fan speed of outdoor unit 8 4 2 3 Indoor fan running rules In cooling mode indoor fan runs all the time and the speed can be selected as high medium low auto and silent When the compressor is running the indoor fan is controlled as below speed H H H G oH SEC T M M M Z an a M M M oc L L L D H D es 881 GG Uit 33 The auto fan acts as below rules For 24k unit TI i 27 5 High 27 Medium 25 5 m Low For other models T1 Ts v 6 0 sa T 2 5 L 1 0 8 4 2 4 Condenser temperature protection 55 C lt T3 lt 60 C the compressor frequency will decrease to the lower level until to F1 and then runs at F1 If T3 54 C the compressor will keep running at the current frequency 3 52 C the compressor will not limit the frequency and resume to the former frequency T3 gt 60 C for 5 seconds the compressor will stop until T3 52 C 8 4 2 5 Evaporator temperature protection T2 0 C the compressor will stop and restart when 2 gt 5 0 C 2 lt 47 the com
34. reeze During this period the anti cold wind is disabled Auto fan action in heating mode For 24k unit THs 25 2 0 15 1 0 High For other models T1 Tst v 0 0 L 1 0 28 H L 0 2 L la H L O 4 L 3 0 H L 0 6 L pis H L 0 6 L 5 0 6 0 H L 0 8 L 6 5 H 38 8 4 3 4 Defrosting mode Condition of defrosting If any one of the following items is satisfied AC will enter the defrosting mode After the compressor starts up and keeps running mark the minimum value of T3 from the 10th minutes to 15th minutes as T30 1 If the compressor cumulate running time is up to 29 minutes and T3 lt TCDI1 T3 T30SUBT3ONE T30 2 If the compressor cumulate running time is up to 35 minutes and T3 lt TCDI2 T3 T30SUBT3TWO 30 3 If the compressor cumulate running time is up to 29 minutes and T3 for minutes 4 If the compressor cumulate running time is up to 120 minutes and T3 lt 15 C Condition of ending defrosting If any one of the following items is satisfied the defrosting will finish and the machine will turn to normal heating mode T3 rises to be higher than TCDE1 C T3 keeps to be higher than TCDE2 C for 80 seconds The machine has run for 10 minutes in defrosting mode 39 Defrosting action For 9k and 12k unit xx 60 Compressor 4 way valve Outdoor fan Indoor fan on off on off on off on off Frequency F3 F
35. requencyF 16 For 18k and 24k unit xx 90 10 Indoor fan breeze 10s XX 10s L no longer than 10m 306 Frequency F3 Erequency F16 on Compressor off on 4 way valve off on Outdoor fan off on Indoor fan off 10s Indoor fan breeze 10s 1 XX 10s no longer than 10m 30s 40 8 4 3 5 Evaporator coil temperature protection T2 i f off TEstop Decrease TEdown Hold TEnorm Off Compressor stops Decrease Decrease the running frequency to the lower level Hold Keep the current frequency Resume No limitation for frequency 8 4 4 Auto mode This mode can be chosen with remote controller and the setting temperature can be changed between 17 30 C In auto mode the machine will choose cooling heating or fan only mode according to AT AT T1 Ts Indoor fan will run at auto fan of the relevant mode The louver operates same as in relevant mode If the machine switches mode between heating and cooling the compressor will keep stopping for 15 minutes and then choose mode according to T1 Ts If the setting temperature is modified the machine will choose running function again 8 4 5 Drying mode 8 4 5 1 Indoor fan speed is fixed at breeze and can t be changed The louver angle is the same as in cooling mode 8 4 5 2 Compressor running rules
36. s is the voltage between S N ol outdoor unit Yes v v Is the wiring to the outdoor mair Is the wiring to the indoor mair PCB connectec correctly PCB connectec correctly Yes Yes v v Change the outdoor main PCB Change the indoor main PCB v Y Power Is the error extinguishec Power on 15 the error extinguishec No No v v Change the indoor main PCE Change the outdoor main PCE 47 9 2 3 Zero crossing detection error diagnosis and solution E2 Check if the connections and N Correct the connections Turn on the power supply is norma unit when the power supply is gooc Yes Y Indoor main PCB is defective Replace indoor main PCE 9 2 4 Indoor fan speed has been out of control diagnosis and solution E3 Shut off the power supply and turn it or 5 seconds latei Is it still displayinc the error code Nc The unit operates normally Yes Y Shut off the power Disassembly the supply rotate the cross connection betweer fan by hanc Does it NE fan and motor check if Ne Replace Beating rotate properly the bearing is norma Yes Yes Y Check the wires of fan motor Are all the Nc Correct the connections Replace indoor fan motor connections good Yes Y Check the resistance value of Jwe Nc indoor fan moto is it norma Yes Y Replace indoor PCE
37. to tighten the service port cap to a torque of 18N m Be sure to check for gas leakage 24 Operation Characteristics Temperature Cooling operation Heating operation Drying operation Mode Room temperature 217 C s30 C gt 10 C Outdoor temperature 0 C 50 C 15 C 30 C 0 C 50 C CAUTION 1 If the air conditioner is used beyond the above conditions certain safety protection features may come into operation and cause the unit to operate abnormally 2 The room relative humidity should be less than 80 If the air conditioner operates beyond this figure the surface of the air conditioner may attract condensation Please set the vertical air flow louver to its maximum angle vertically to the floor and set HIGH fan mode 3 The optimum performance will be achieved during this operating temperature zone 25 8 Electronic function 8 1 Abbreviation T1 Indoor room temperature T2 Coil temperature of evaporator T3 Coil temperature of condenser T4 Outdoor ambient temperature T5 Compressor discharge temperature 8 2 Display function 8 2 1 Icon explanation on indoor display board 88 AUTO DEFROST RUN TIMER Auto indicator nue This indicator illuminates when the air conditioner is in AUTO operation PRE DEF Indicator DEFROST This indicator illuminates when the air conditioner starts defrosting automatically or when the warm
38. way valve 2 Air purging by refrigerant Indoorunit Y NN Liquid side a 1 2 v A cylinder Procedure 1 Confirm that both the 2 way and 3 way valves are set to the closed position 2 Connect the charge set and a charging cylinder to the service port of the 3 way valve 3 Air purging Open the valves on the charging cylinder and the charge set Purge the air by loosening the flare nut on the 2 way valve approximately 45 for 3 seconds then closing it for 1 minute repeat 3 times After purging the air use a torque wrench to tighten the flare nut on the 2 way valve 4 Check the gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant Close the valve on the charging cylinder and discharge the refrigerant by loosening the flare nut on the 2 way valve approximately 45 until the gauge indicates 0 3 to 0 5 Mpa 6 Disconnect the charge set and the charging cylinder and set the 2 way and 3 way valves to the open position Be sure to use a hexagonal wrench to operate the valve stems 7 Mount the valve stems nuts and the service port cap Be sure to use a torque wrench to tighten the service port cap to a torque 18N m Be sure to check the gas leakage 3 Adding the refrigerant if the pipe length gt 5m indi Liquid A Outdoor unit 12 Fi um amp Ny e NC SS
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