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ARUV Series Outdoor unit Installation Manual

TABLE OF CONTENTS

Safety Precautions............................3

Installation Process ..........................7

Outdoor units Information................8

Environment-friendly Alternative
Refrigerant R410A ............................9

Select the Best Location ..................9

Installation Space............................10

Lifting method .................................13

Installation .......................................14

Refrigerant piping installation .......19

Electrical Wiring ..............................35

Test Run ...........................................50

Caution For Refrigerant Leak.........66

Installation guide at the seaside....68

Outdoor Unit

Summary of Contents for Multi V Space ARUV Series

Page 1: ...l completely before installing the product Installation work must be performed in accordance with the national wiring standards by authorized personnel only Please retain this installation manual for future reference after reading it thor oughly P NO MFL62405704 ENGLISH ESPAÑOL PORTUGUESE ...

Page 2: ...door units Information 8 Environment friendly Alternative Refrigerant R410A 9 Select the Best Location 9 Installation Space 10 Lifting method 13 Installation 14 Refrigerant piping installation 19 Electrical Wiring 35 Test Run 50 Caution For Refrigerant Leak 66 Installation guide at the seaside 68 2 Outdoor Unit ...

Page 3: ...or an authorized technician to install the air conditioner Improper installation by the user may result in water leakage electric shock or fire Always ground the product There is risk of fire or electric shock Always intstall a dedicated circuit and breaker Improper wiring or installation may cause fire or electric shock For re installation of the installed product always contact a dealer or an Au...

Page 4: ...efrigerant leaks Consult the dealer regarding the appropriate measures to prevent the safety limit from being exceed ed Should the refrigerant leak and cause the safety limit to be exceeded harzards due to lack of oxy gen in the room could result n Operation Do not damage or use an unspecified power cord There is risk of fire electric shock explosion or injury Use a dedicated outlet for this appli...

Page 5: ... munication station or similar place provide surfficient protection against noise The inverter equipment private power generator high frequency medical equipment or radio com munication equipment may cause the air condition er to operate erroneously or fail to operate On the other hand the air conditioner may affect such equipment by creating noise that disturbs medical treatment or image broadcas...

Page 6: ...bag which was not torn apart they face the risk of suffocation Turn on the power at least 6 hours before starting operation Starting operation immediately after turning on the main power switch can result in severe damage to internal parts Keep the power switch turned on during the operational season Do not touch any of the refrigerant piping during and after operation It can cause a burn or frost...

Page 7: ...s to be responsible for switch settings Determination of division work The vacuum pump used must have a capacity of reaching at least 5 torr more than 1 hour Vacuum drying Recharge correctly as calculated in this manual and record the amount of added refrigerant Additional charge of refrigerant Make sure there are no gaps left between the facing materials used on the ceiling Fit facing panels Run ...

Page 8: ...680 495 750 1 680 495 29 5 x 66 2 x 19 5 29 5 x 66 2 x 19 5 9 52 3 8 9 52 3 8 15 88 5 8 19 05 3 4 Model HP Equivalent horsepower Chassis Refrigerant Product charge kg CF Correction Factor kg Max Connectable No of Indoor Units Net Weight kg Dimensions WxHxD mm inch Connecting Pipes Liquid Pipes mm inch Gas Pipes mm inch ARUV50LF3 ARUV60LF3 ARUV80LF3 5 6 8 UV3 UV3 UV3 3 0 3 0 3 0 0 0 0 8 9 13 125 12...

Page 9: ... be reduced and preheat time of the indoor unit may be lengthened in case of installing the outdoor unit in winter at following location 1 Shade position with a narrow space 2 Location with much moisture in neighboring floor 3 Location with much humidity around 4 Location where water gathers since the floor is not even The refrigerant R410A has the property of higher operating pressure in comparis...

Page 10: ...he product so that the door of the outdoor unit room is completely opened for smooth installation and service A water drain outlet is required to discharge rain water on the bottom of the outdoor unit room or condensation water to possibly generate when operating The recommended specification of louver Multi V Space should be installed in the special outdoor room with soundproofing walls Indoor 10...

Page 11: ...freezes on the air suction hole the system may malfunction Don t install the suction hole and discharge hole of the outdoor unit facing to the seasonal wind W H N Air Flow Rate Q Ad Discharge air velocity Air Flow Rate Q As Suction air velocity Ad Discharge Area As Suction Area Ad As Af x 100 ho h θ θ E O R 85 Recommended Effective Opening Ratio E O R of Louver ho h x cosθ Total Area A H x W Effec...

Page 12: ... Front Front Front Back Front No limit to the height of the wall No limit to the height of the wall Unit mm A 10 B 500 C 10 D Waterproof wall installation condition A 10 B 500 C 10 D Waterproof wall installation condition E 20 A 10 B 500 C 10 D Waterproof wall installation condition E 20 A 10 B 500 A 10 B 500 E 20 If a 300 D 150 If 300 a 500 D 250 Installation Space The following values are the le...

Page 13: ...re than 20 kg PP bands are used to pack some products Do not use them as a mean for transportation because they are dangerous Do not touch heat exchanger fins with your bare hands Otherwise you may get a cut in your hands Tear plastic packaging bag and scrap it so that children cannot play with it Otherwise plastic packaging bag may suffo cate children to death When carrying in Outdoor Unit be sur...

Page 14: ...Installation Location of anchor bolt n Installation foot Location of anchor bolt 632 467 Installation 14 Outdoor Unit ...

Page 15: ...Anti vibration materials Four bolt are required 3 thread ridges H Beam Concrete base 100 A B Installation Manual 15 ENGLISH Be sure to install unit in a place strong enough to withstand its weight Any lack of strength may cause unit to fall down resulting in a personal injury Have installation work in order to protect against a strong wind and earthquake Any installation deficiency may cause unit ...

Page 16: ...n below Firmly hold copper tube in a bar or die as indicated dimension in the table above 4 Check n Compare the flared work with figure below n If flare is noted to be defective cut off the flared section and do flaring work again Main cause of gas leakage is defect in flaring work Carry out correct flaring work in the following procedure Pipe A Gas Liquid Gas Liquid 5 6 19 100 1 2 1 4 0 5 0 8 0 0...

Page 17: ...nnected use nitrogen to perform a gas leak check Tightening torque Opening shutoff valve Closing shutoff valve FLARE SHAPE and FLARE NUT TIGHTENING TORQUE Shutoff valve size Ø6 4 Ø9 5 Ø12 7 Ø15 9 Ø22 2 Ø25 4 13 5 16 5 18 22 14 17 33 39 50 60 62 75 23 27 13 5 16 5 5 4 6 6 Hexagonal wrench 4mm Hexagonal wrench 6mm Hexagonal wrench 10mm 8 1 9 9 27 33 36 44 11 5 13 9 22 28 Tightening torque N m Turn c...

Page 18: ...is operated for a long time in high humid atmosphere dew point tempera ture more than 23 C water drops are liable to fall In this case add heat insulation material according to the following procedure Heat insulation material to be prepared EPDM Ethylene Propylene Diene Methylene over 120 C the heat resistance temperature Add the insulation over 10mm thickness at high humidity environment Indoor u...

Page 19: ...ing Refrigerant produces poisonous gas that is harmful to human body during combustion Do not carry out welding operation in a sealed area Make sure to close the cap of service port after work so that gas does not leak CAUTION Please block the front panel after pipe installation Animal or foreign object can enter to cause damage on the wires WARNING Always use extreme care to prevent the refrigera...

Page 20: ...g Valve Main power line knock out during the ground piping Pipe knock out during the ground piping Communication line knock out during the ground piping Main Power Line knock out Communication Line knock out Liquid pipe gas pipe main knock out Indoor outdoor pipe connection n Preparatory work n Pipe withdrawal method Front pipe withdrawal method During front pipe withdrawal operate piping work fol...

Page 21: ...id pipe Gas pipe Removal of base plate pipe knock out Removal of base plate Gas pipe Liquid pipe Anti vibration pad More than 50 mm Refrigerant piping installation Installation Manual 21 ENGLISH For the smooth floor piping withdrawal work you have to keep the height of concrete supporter and installation and secure the height more than 50 mm CAUTION ...

Page 22: ...ion and then use an adapter for connecting different diameters to connect the piping 7 Always observe the restrictions on the refrigerant piping such as rated length difference in height and piping diameter Failure to do so can result in equipment failure or a decline in heating cooling performance 8 A second branch cannot be made after a header These are shown by ARBLN01621 ARBLN03321 ARBL054 ARB...

Page 23: ...e clogging or damage to the compressor unit and flux can harm the copper piping or refrigerant oil 3 2 1 4 5 6 1 Refrigerant piping 4 Taping 2 Pipe to be brazed 5 Valve 3 Nitrogen 6 Pressure reducing valve Installation Manual 23 ENGLISH When installing and moving the air conditioner to another site be sure to make recharge refrigerant after perfect evacuation If a different refrigerant or air is m...

Page 24: ...y type Liquid pipe Gas pipe mm inch mm inch 5HP Ø9 52 3 8 Ø15 88 5 8 6HP Ø9 52 3 8 Ø19 05 3 4 8HP Ø9 52 3 8 Ø19 05 3 4 Indoor unit capacity kW Btu h Liquid pipe Gas pipe mm inch mm inch 5 6 19 100 Ø6 35 1 4 Ø12 7 1 2 16 0 54 600 Ø9 52 3 8 Ø15 88 5 8 22 4 76 400 Ø9 52 3 8 Ø19 05 3 4 33 112 600 Ø9 52 3 8 Ø22 2 7 8 Indoor unit capacity kW Btu h Liquid pipe Gas pipe mm inch mm inch 5 6 19 100 Ø6 35 1 ...

Page 25: ... Example 5 Indoor Units connected Ⓐ Outdoor Unit Ⓑ 1st branch Y branch Ⓒ Indoor Units L100m l 30m H 10m h 5m Ú Total pipe length A B C D a b c d e 150m 175m Longest pipe length Equivalent pipe length A B C D e 100m A B C D e 125m Longest pipe length after 1st branch B C D e 30m Difference in height Outdoor Unit Indoor Unit H 10m Difference in height Indoor Unit Indoor Unit h 5m L l H h ENGLISH ...

Page 26: ... after header Ú Total pipe length A a b c d e f 150m 175m Longest pipe length Equivalent pipe length A f 100m A f 125m Longest pipe length after 1st branch f 30m Difference in height Outdoor Unit Indoor Unit H 10m Difference in height Indoor Unit Indoor Unit h 5m L l H h 26 Outdoor Unit Pipe length after header branching a f It is recommended that difference in length of the pipes connected to the...

Page 27: ...at of header to be 1m calculation purpose Longest pipe length Equivalent pipe length A B b 100m A B b 125m Longest pipe length after 1st branch B b 30m Difference in height Outdoor Unit Indoor Unit H 10m Difference in height Indoor Unit Indoor Unit h 5m L l H h Ú Refrigerant pipe diameter from branch to branch B C D Downward Indoor Unit total capacity kW Btu h 5 6 19 100 Ø6 35 1 4 Ø12 7 1 2 16 54 ...

Page 28: ...acity Btu h kW 5k 7k 9k 12k 15k 18k 24k 28k 36k 42k 48k 76k 96k Type 1 6 2 2 2 8 3 6 4 5 5 6 7 1 8 2 10 6 12 3 14 1 22 4 28 0 0 17 0 17 0 17 0 17 0 37 0 37 0 26 0 26 0 26 0 26 0 26 0 26 0 44 0 44 0 44 0 62 1 00 1 00 0 24 0 24 0 24 0 24 0 28 0 28 0 20 0 20 0 20 0 29 0 29 0 16 0 16 0 18 0 18 0 25 0 25 0 32 0 32 0 48 v0 48 0 64 0 64 0 64 0 10 0 10 0 10 0 17 0 17 0 17 0 17 0 37 0 37 0 10 0 10 0 35 0 3...

Page 29: ...re is no limitation on the joint mounting configuration If the diameter of the refrigerant piping selected by the procedures described is different from the size of the joint the connecting section should be cut with a pipe cutter Branch pipe should be insulated with the insulator in each kit When the number of pipes to be connected is smaller than the number of header branches install a cap to th...

Page 30: ...e insulated with the insulator in each kit Joints between branch and pipe should be sealed with the tape included in each kit Any cap pipe should be insulated using the insulator provided with each kit and then taped as described above B Pinched pipe Horizontal plane View from point B in the direction of the arrow Insulate the header using the insulation material attached to the branch pipe kit as...

Page 31: ...2 O D19 05 O D19 05 I D22 2 I D25 4 70 80 110 I D9 52 I D12 7 5 3 6 D I 2 5 9 D I I D9 52 I D12 7 I D6 35 I D12 7 332 321 74 376 404 96 471 517 125 416 444 96 371 394 83 I D34 9 O D31 8 I D22 2 O D22 2 I D28 58 I D31 8 O D19 05 I D28 58 120 90 120 130 120 110 70 O D15 88 I D9 52 I D12 7 O D12 7 I D6 35 I D9 52 I D15 88 I D19 05 I D22 2 I D22 2 I D19 05 I D15 88 I D12 7 I D15 88 I D19 05 I D22 2 O ...

Page 32: ...88 ID22 2 ID28 58 ID25 4 120 120 150 360 ID9 52 ID9 52 ID6 35 ID6 35 ID9 52 ID12 7 120 150 120 ID15 88 ID12 7 ID15 88 ID12 7 ID15 88 ID19 05 120 150 120 ID6 35 ID9 52 ID9 52 ID12 7 120 150 160 580 ID19 05 ID15 88 ID15 88 ID12 7 ID22 2 ID28 58 ID25 4 120 150 700 120 ID6 35 ID9 52 ID9 52 ID6 35 ID9 52 ID12 7 120 150 160 760 ID19 05 ID15 88 ID15 88 ID12 7 ID22 2 ID28 58 ID25 4 120 150 120 720 ID6 35 ...

Page 33: ...he ambient temperature differs between the time when pressure is applied and when the pressure drop is checked apply the following correction factor There is a pressure change of approximately 0 1 kg cm2 0 01 MPa for each 1 C of temperature difference Correction Temp at the time of pressurization Temp at the time of check X 0 1 For example Temperature at the time of pressurization 3 8 MPa is 27 C ...

Page 34: ...iny season or over a long period of time After evacuating the system for 2 hrs give pressure to the system to 0 05MPa vacuum break with nitro gen gas and then evacuate it again with the vacuum pump for 1hr to 100 7kPa vacuum drying If the system cannot be evacuated to 100 7kPa within 2 hrs repeat the steps of vacuum break and its drying Finally check if the vacuum gauge does not rise or not after ...

Page 35: ...cted by elec tric noise from the power source Do not run it through the same conduit 3 Be sure to provide designated grounding work to Outdoor Unit 4 Give some allowance to wiring for electrical part box of Indoor and Outdoor Units because the box is some times removed at the time of service work 5 Never connect the main power source to terminal block of transmission line If connected electrical p...

Page 36: ...low For wiring use the designated power wire and connect firmly then secure to prevent outside pressure being exerted on the terminal block Use an appropriate screwdriver for tightening the terminal screws A screwdriver with a small head will strip the head and make proper tighterning impossible Over tightening the terminal screws may break them u Precautions when laying power wiring Round pressur...

Page 37: ...t be connected between them When connecting transmission line between outdoor unit and indoor units with shielded wire connect the shield ground to the earth screw Inverter PCB Inverter PCB Inverter Compressor FAN PCB FAN PCB FAN PCB Reactor Reactor Reactor Noise Filter Noise Filter Noise Filter Terminal Block 1Ø 220V Terminal Block 3Ø 380V Terminal Block 3Ø 380V Main PCB Main PCB Main PCB Front P...

Page 38: ...d power lines are run alongside each other then there is a strong likelihood of operational faults developing due to interference in the signal wiring caused by electrostatic and electromagnetic cou pling The tables below indicates our recommendation as to appropriate spacing of transmission and power lines where these are to be run side by side 1 Transmission cable Types shielding wire Diameter 1...

Page 39: ...g of Main Power Supply and Equipment Capacity ENGLISH Follow ordinance of your governmental organization for technical standard related to electrical equipment wiring regulations and guidance of each electric power company Make sure to use specified wires for connections so that no external force is imparted to terminal connections If connections are not fixed firmly it may cause heating or fire M...

Page 40: ... The GND terminal at the main PCB is a terminal for day contact it is not the point to make ground connection Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage Communication disorder by noise effect and motor current leakage without connection to pipe Don t install an individual switch or electrical outlet to disconnect each of indoor unit separa...

Page 41: ...he GND terminal at the main PCB is a terminal for day contact it is not the point to make ground connection ENGLISH Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage Communication disorder by noise effect and motor current leakage without connection to pipe Don t install an individual switch or electrical outlet to disconnect each of indoor unit ...

Page 42: ...ND terminal at the main PCB is a terminal for day contact it is not the point to make ground connection Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage Communication disorder by noise effect and motor current leakage without connection to pipe Don t install an individual switch or electrical outlet to disconnect each of indoor unit separately f...

Page 43: ...of communication cable must be in stalled like below figure between indoor unit to outdoor unit Abnormal operation can be caused by communi cation defect when connection of communication cable is installed like below figure STAR type ENGLISH Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage Communication disorder by noise effect and motor current...

Page 44: ...ne Distribution Header 1st 1st 1st Main pipe Distribution 2nd 2nd 3rd 3rd Main pipe Distribution 1st 3rd 3rd main pipe distribution 2nd Vertical Distribution Ensure that the branch pipes are attached vertically The others Electrical Wiring ...

Page 45: ...inishing tape Insulating material Bad example Good example These parts are not insulated B A C A B C A C D E A B C D E Transmission lines F Liquid pipe Transmission lines Transmission lines Separation Gas pipe Power lines Insulating material A B C D E A A B F Heat insulation material Pipe Outer covering Wind the connection part and cutting part of heat insulation material with a finishing tape Pow...

Page 46: ...tion set whose addressing is completed are indicated for 30sec onds on 7 segment LED of the outdoor unit PCB 6 After completing addressing address of each indoor unit is indicated on the wired remote control display window CH01 CH02 CH03 CH06 Indicated as numbers of indoor unit connec tion set SW01B DIP S W SW02B DIP S W 7 Segment SW02V Auto addressing SW01V Data confirm In replacement of the indo...

Page 47: ...displayed on wired remote control or indoor unit display window It is not an error message will disappeared when on off button is pressed on remote control ex Display of 01 02 15 means connection of 15 indoor units and auto addressing is completed normally Auto addressing start Waiting 3 minutes Power On Press SW02V for 5 sec 7 segment LED 88 Don t Press SW02V Waiting about 2 7 minutes 7 segment L...

Page 48: ... Indoor Unit number with a wired remote control To control several sets of Indoor Units into a group set the group ID from 0 to F for this purpose Terminal block on the main PCB SODU IDU INTERNET DRY1 DRY2 B A B D A C GND 12V B A B A Group recognizing the simple central controller No 0 group 00 0F No 1 group 10 1F No 2 group 20 2F No 3 group 30 3F No 4 group 40 4F No 5 group 50 5F No 6 group 60 6F...

Page 49: ...ht Low Noise function Cooling Only Mode Vacuum Mode Providing of contact point to commercial auto louver Step 1 of Static Pressure Compensation Step 2 of Static Pressure Compensation Low Noise Operation 1 2 3 4 5 6 7 8 9 10 11 12 13 14 l l l 5 5 l l l 5 l l l l l 5 l l 5 l 5 l 5 l l 5 5 l l l l l l Model Code PHASE HP Model Type 180 1 phase 5 171 181 6 180 3 phase 5 172 181 6 182 8 ENGLISH Power o...

Page 50: ...ss black and red button simultaneously for 5 seconds 6 When test run is finished indoor units are stopped and 938 is displayed after 90 seconds 7 To perform FDD logic test proceeds when 3 minutes passed after reset Step 0 Check order signal Select the function of test run Step 1 Sensor checking Check sensor abnormality Step 2 Refrigerant auto charging In case of adding additional refrigerant this ...

Page 51: ...ooling Mode Integrated Trial Run Cooling Mode Warning Make sure to reset Main PCB before executing these functions Sensor inspection function is a function to judge whether its current temperature sensed by each sensors attached to out door and indoor units 3 temperature sensors attached to indoor unit 5 temperature sensors and 2 pressure sensors attached to outdoor unit are appropriate It can be ...

Page 52: ...Table 2 n Step 3 Turn Off h 1 error is displayed through 3 stages above and maximum of 5 errors are displayed Sensor Check Error Code Display 1 Pipe inlet temperature sensor 2 Pipe outlet temperature sensor 3 Air temperature sensor n Indoor unit error display 1 1st and 2nd number represents indoor unit number 2 Last number represents sensor h Indoor unit number follows Auto addressing num ber No S...

Page 53: ...ds Dip Switch Configuration Method Warning Make sure to reset Main PCB before executing these functions Suitable Temperature Conditions Refrigerant Charging Turn off Indoor Unit Press black button for 2 seconds Press black button for 2 seconds after turning off all dip switches Data Reset Standby End NO NO NO YES YES YES 12 minutes Error Display Note2 Note1 Press black button for 2 seconds Refrige...

Page 54: ...refrigerant charging function 1 Temperature Range Error In case that IDU or ODU is out of range 2 Low Pressure Descent Error In case the system runs at low pressure limit for over 10 minutes 3 Judging rapid refrigerant inflow In case the liquid refrigerant flows in because of not using desig nated Capillary Assembly 4 Instability Error In case the high low pressure target doesn t get satisfied for...

Page 55: ...play Error Display Appropriate temperature condition Indoor Unit thermo turned off Detect Amount of Refrigerant Detect Amount of Refrigerant Excess amount of Refrigerant Not enough Refrigerant Unable to detect refrigerant Refrigerant amount normal Direct connection of Gas pipe and Liquid pipe Turn off indoor unit Press black button for 2 seconds End Press black button for 2 seconds after turning o...

Page 56: ...ill be OFF 2 Excess of Refrigerant 619 After remove the 20 of calculated total refrigerant recharge the refrigerant by using Refrigerant Auto Charging Function 3 Scarcity of Refrigerant 629 Charge the refrigerant by using Refrigerant Auto Charging Function 4 Impossible to Judge 639 IF the system is not in order check the other problem except refrigerant 1 Guaranteed Temperature range Error occurs ...

Page 57: ...EV malfunction It is a function to detect disconnection of EEV of Indoor unit and disconnection between indoor and outdoor units by detect ing temperature sensor of indoor unit through change in refrigerant amount inflow into the indoor unit due to fluctuations of indoor EEV during system operation Dip Switch Configuration Method Cooling Mode Warning Make sure to reset Main PCB before executing th...

Page 58: ...s End Press black button for 2 seconds after turning off all dip switches Normal mode Cooling Mode operation of entire unit Note 1 Please whether normal or not by referring to multi V trial run result report Dip Switch Configuration Method Warning Make sure to reset Main PCB before executing these functions It is a process to verify normal operation of the system and components attached to the sys...

Page 59: ...rations for cycle is recommended Current Exhaust overheat level Intake Overheat level EEV Opening Estimated Refrigerant Amount COMP High Pressure Low Pressure Comp Operation Verification Inverter Current Inverter 1 Inverter 2 Inverter 3 Inverte r4 Inverter 1 Inverter 2 Inverter 3 Inverter 4 Static 1 Static 2 Static 3 Static 4 Static 5 Static 6 Static 7 Static 8 Static 1 Static 2 Static 3 Static 4 ...

Page 60: ... is operated setting RPM Night silent operation end fi 9 hours after Night silent operation is started the function should be stopped automatically Main PCB Power Reset Setting the Fan Max RPM Setting Complete Dip S W No 12 14 ON Master ODU SW01S Master ODU SW01B SW01V SW02V Note 1 Max RPM setting method Example of Max RPM Setting 1 time 1 time 1 time 1 time 1 time 1 time 1 time 1 time Red button ...

Page 61: ...s a function to secure airflow of outdoor unit in case static pressure is applied to exhaust duct or other parts of the outdoor unit Configuaration method for static pressure compensation dip switch Reset the power after configuring the dip switch It is a function for reduction of outdoor unit noise at sites sensitive to noise Configuration method for quiet operation dip switch Reset the power aft...

Page 62: ...ver Function SW01B SW02B Remarks SW01B DIP S W SW02B DIP S W 7 Segment SW02V Auto addressing SW01V Data confirm CN 15 commercial auto louver Control box for commercial auto louver Switching Control Contact Point Signal Connection on Site l Function to provide contact point for connection to commercial auto louver 1 For configuration of functions ask the installation specialist during installation ...

Page 63: ...rt Operation mode between indoor unit and outdoor unit is different In case when the serial number marked on EEPROM of Indoor unit is 0 or FFFFFF Disconnecting the fan motor connector Failure of indoor fan motor lock Air temperature sensor of indoor unit is open or short Outdoor Unit Inverter Compressor Drive IPM Fault Outdoor Unit Inverter Board Input Current excess RMS DC charging is not perform...

Page 64: ...sor open or short Instant Over Current Peak of Outdoor Unit PFC Outdoor Unit Fan CT Sensor open or short Outdoor Unit Fan DC Link High Voltage Error Outdoor Unit Fan Current is over 5A Outdoor Unit Inverter Compressor Over Current Outdoor Unit Inverter Compressor High Discharge Temperature High Pressure of Outdoor Unit Low Pressure of Outdoor Unit Low pressure ratio Outdoor Unit Inverter Compresso...

Page 65: ... the outdoor unit Outdoor Unit Fan Inverter PCB Temperature is Over 95 C Outdoor Unit Fan PCB Heat Sink Temperature Sensor open or short Network Error of the central control unit Outdoor Unit Fan Start Failure Error Outdoor Unit Main PCB EEPROM Error Outdoor Unit Fan PCB EEPROM Error PFC PCB EEPROM Error Outdoor Unit Fan PCB Communication Error Outdoor Unit FAN IPM Fault Error Outdoor Unit Fan DC ...

Page 66: ...t is harmless and incombustible itself the room to equip the air conditioner should be large enough to such an extent that the refrigerant gas will not exceed the limiting concentration even if the refrigerant gas leaks in the room Limiting concentration Check limiting concentration along following steps and take appropriate measure depending on the situation Calculate amount of all the replenishe...

Page 67: ...rm linked with mechanical ventilator Pay special attention to the place such as a basement etc where refrigerant can be present since refrigerant is heavier than air R410A Refrigerant concentration kg m3 Total amount of replenished refrigerant in refrigerant facility kg Capacity of smallest room where indoor unit is installed m3 In case the result of calculation exceeds the limiting concentration ...

Page 68: ...exposure to the sea wind Otherwise it needs additional anticorrosion treatment on the heat exchanger CAUTION 1 If the outdoor unit is to be installed close to the seaside direct exposure to the sea wind should be avoided Install the outdoor unit on the opposite side of the sea wind direction 2 Select a well drained place Sea wind Sea wind 1 If you canʼt meet above guide line in the seaside install...

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