Daikin VRV IV W+ Series Page 136 Installer And User Reference Manual Download

Page: 136 / 144

Troubleshooting

Installer and user reference guide

136

RWEYQ8~14T9Y1B

VRV IV water-cooled system air conditioner

4P452191-1B – 2020.10

23 Troubleshooting

In this chapter

23.1

Solving problems based on error codes................................................................................................................................. 136

23.1 Solving problems based on error codes

In case of a displayed malfunction code, perform correcting actions as explained in
the malfunction code table.

After correcting the abnormality, press BS3 to reset the malfunction code and retry
operation.

The malfunction code which is displayed on the outdoor unit will indicate a main
malfunction code and a sub code. The sub code indicates more detailed
information about the malfunction code. The malfunction code will be displayed
intermittent.

Example:

Code

Example

Main code

Sub code

With an interval of 1 second, the display will switch between main code and sub
code.

Summary of Contents for VRV IV W+ Series

Page 1: ...Installer and user reference guide VRV IV water cooled system air conditioner RWEYQ8T9Y1B RWEYQ10T9Y1B RWEYQ12T9Y1B RWEYQ14T9Y1B ...

Page 2: ...er remote control switch 27 8 3 Using the dry program 28 8 3 1 About the dry program 28 8 3 2 To use the dry program WITHOUT cool heat changeover remote control switch 28 8 3 3 To use the dry program WITH cool heat changeover remote control switch 29 8 4 Adjusting the air flow direction 29 8 4 1 About the air flow flap 29 8 5 Setting the master user interface 30 8 5 1 About setting the master user...

Page 3: ...5 2 Overview About the box 47 15 3 To unpack the outdoor unit 48 15 4 To remove the accessories from the outdoor unit 49 15 5 Accessory pipes Diameters 49 15 6 To remove the transportation stay 50 16 About the units and options 51 16 1 Overview About the units and options 51 16 2 Identification label Outdoor unit 51 16 3 About the outdoor unit 52 16 4 System layout 52 16 5 Combining units and opti...

Page 4: ...recautions when connecting the water piping 101 18 6 3 To connect the water piping 101 18 6 4 To fill the water circuit 102 18 6 5 To insulate the water piping 102 19 Electrical installation 103 19 1 About connecting the electrical wiring 103 19 1 1 Precautions when connecting the electrical wiring 103 19 1 2 Field wiring Overview 105 19 1 3 About the electrical wiring 105 19 1 4 About electrical ...

Page 5: ...te heat exchanger 134 22 2 1 To clean the plate heat exchanger 134 22 3 About service mode operation 135 22 3 1 To use vacuum mode 135 22 3 2 To recover refrigerant 135 23 Troubleshooting 136 23 1 Solving problems based on error codes 136 24 Disposal 137 25 Technical data 138 25 1 Service space Outdoor unit 138 25 2 Piping diagram Outdoor unit 139 25 3 Wiring diagram Outdoor unit 140 26 Glossary 1...

Page 6: ...r and user reference guide Preparation of the installation reference data Detailed step by step instructions and background information for basic and advanced usage Format Digital files on http www daikineurope com support and manuals product information Latest revisions of the supplied documentation may be available on the regional Daikin website or via your dealer The original documentation is w...

Page 7: ...E Indicates a situation that could result in equipment or property damage INFORMATION Indicates useful tips or additional information Symbols used on the unit Symbol Explanation Before installation read the installation and operation manual and the wiring instruction sheet Before performing maintenance and service tasks read the service manual For more information see the installer and user refere...

Page 8: ...ing refrigerant WARNING Improper installation or attachment of equipment or accessories could result in electrical shock short circuit leaks fire or other damage to the equipment Only use accessories optional equipment and spare parts made or approved by Daikin WARNING Make sure installation testing and applied materials comply with applicable legislation on top of the instructions described in th...

Page 9: ...ufficient space around the unit for servicing and air circulation Make sure the installation site withstands the weight and vibration of the unit Make sure the area is well ventilated Do NOT block any ventilation openings Make sure the unit is level Do NOT install the unit in the following places In potentially explosive atmospheres In places where there is machinery that emits electromagnetic wav...

Page 10: ... s compressor does NOT have to operate WARNING ALWAYS recover the refrigerant Do NOT release them directly into the environment Use a vacuum pump to evacuate the installation NOTICE After all the piping has been connected make sure there is no gas leak Use nitrogen to perform a gas leak detection NOTICE To avoid compressor breakdown do NOT charge more than the specified amount of refrigerant When ...

Page 11: ... Incorrect refrigerant amount 2 1 4 Brine If applicable See the installation manual or installer reference guide of your application for more information WARNING The selection of the brine MUST be in accordance with the applicable legislation WARNING Take sufficient precautions in case of brine leakage If brine leaks ventilate the area immediately and contact your local dealer WARNING The ambient ...

Page 12: ...with the wiring diagram supplied with the product NEVER squeeze bundled cables and make sure they do NOT come in contact with the piping and sharp edges Make sure no external pressure is applied to the terminal connections Make sure to install earth wiring Do NOT earth the unit to a utility pipe surge absorber or telephone earth Incomplete earth may cause electrical shock Make sure to use a dedica...

Page 13: ...he head and make proper tightening impossible Over tightening the terminal screws may break them Install power cables at least 1 m away from televisions or radios to prevent interference Depending on the radio waves a distance of 1 m may not be sufficient WARNING After finishing the electrical work confirm that each electrical component and terminal inside the electrical components box is connecte...

Page 14: ...ttended when the service cover is removed DANGER RISK OF BURNING SCALDING DANGER RISK OF ELECTROCUTION WARNING Take sufficient precautions in case of refrigerant leakage If refrigerant gas leaks ventilate the area immediately Possible risks Excessive refrigerant concentrations in a closed room can lead to oxygen deficiency Toxic gas might be produced if refrigerant gas comes into contact with fire...

Page 15: ...pply connect the earth cable first before making the current carrying connections When disconnecting the power supply disconnect the current carrying cables first before separating the earth connection The length of the conductors between the power supply stress relief and the terminal block itself must be as such that the current carrying wires are tautened before the earth wire is in case the po...

Page 16: ...For the user Installer and user reference guide 16 RWEYQ8 14T9Y1B VRV IV water cooled system air conditioner 4P452191 1B 2020 10 For the user ...

Page 17: ...persons with reduced physical sensory or mental capabilities or lack of experience and knowledge can only use this appliance if they have been given supervision or instruction concerning the use of the appliance by a person responsible for their safety Children MUST NOT play with the appliance Cleaning and user maintenance MUST NOT be carried out by children without supervision WARNING To prevent ...

Page 18: ...wing symbol This means that the batteries may NOT be mixed with unsorted household waste If a chemical symbol is printed beneath the symbol this chemical symbol means that the battery contains a heavy metal above a certain concentration Possible chemical symbols are Pb lead 0 004 Waste batteries must be treated at a specialized treatment facility for reuse By ensuring waste batteries are disposed ...

Page 19: ...p is in operation Fingers may become caught or the unit may break down CAUTION Do NOT insert fingers rods or other objects into the air inlet or outlet Do NOT remove the fan guard When the fan is rotating at high speed it will cause injury CAUTION Pay attention to the fan It is dangerous to inspect the unit while the fan is running Be sure to turn off the main switch before executing any maintenan...

Page 20: ...gas cookers etc is present Always have qualified service personnel confirm that the point of leakage has been repaired or corrected before resuming operation WARNING Stop operation and shut off the power if anything unusual occurs burning smells etc Leaving the unit running under such circumstances may cause breakage electric shock or fire Contact your dealer WARNING The refrigerant in the system ...

Page 21: ... future system extensions is available in technical engineering data and should be consulted Contact your installer to receive more information and professional advice In this chapter 5 1 System layout 21 5 1 System layout Heat pump system g c g g h g g c c c d f e i j b a a Unit b Refrigerant piping c VRV DX indoor unit d Low temperature LT Hydrobox unit e Branch selector box BP required to conne...

Page 22: ...igerant piping c Branch selector unit BS d Multi branch selector unit BS e VRV DX indoor unit f Low temperature LT Hydrobox unit g Cooling only VRV indoor unit h High temperature HT Hydrobox unit i EKEXV kit j Air handling unit AHU k User interface l Wireless user interface m Water system connection Water system c g d f e b a a Unit b Connection to refrigerant system c Water piping d Dry cooler e ...

Page 23: ... parts inside are dangerous to touch and appliance problems may happen For checking and adjusting the internal parts contact your dealer This operation manual offers a non exhaustive overview of the main functions of the system Detailed information on required actions to achieve certain functions can be found in the dedicated installation and operation manual of the indoor unit Refer to the operat...

Page 24: ...ion type insecticide Chemicals could collect in the unit and endanger the health of people who are hypersensitive to chemicals NOTICE Be sure to turn ON the power 6 hours before operation in order to have power running to the crankcase heater and to protect the compressor This operation manual is for the following systems with standard control Before initiating operation contact your dealer for th...

Page 25: ...nterface VRV DX and Hydrobox 30 8 6 About control systems 31 8 1 Operation range Use the system in the following temperature and humidity ranges for safe and effective operation Cooling Heating Indoor temperature 21 32 C DB 14 25 C WB 15 27 C DB Water temperature 10 45 C Water temperature extended range in case brine type setting 2 50 is set for brine 10 45 C Indoor humidity 80 a a To avoid conden...

Page 26: ...peration In heating operation freezing of the outdoor unit s air cooled coil increases over time restricting the energy transfer to the outdoor unit s coil Heating capability decreases and the system needs to go into defrost operation to be able to remove frost from the outdoor unit s coil During defrost operation the heating capacity on the indoor unit side will temporarily drop until defrosting ...

Page 27: ...tact your dealer for details 8 2 4 To operate the system WITHOUT cool heat changeover remote control switch 1 Press the operation mode selector button on the user interface several times and select the operation mode of your choice Cooling operation Heating operation Fan only operation 2 Press the ON OFF button on the user interface Result The operation lamp lights up and the system starts operati...

Page 28: ...e 8 3 Using the dry program 8 3 1 About the dry program The function of this program is to decrease the humidity in your room with minimal temperature decrease minimal room cooling The micro computer automatically determines temperature and fan speed cannot be set by the user interface The system does not go into operation if the room temperature is low 20 C 8 3 2 To use the dry program WITHOUT co...

Page 29: ...or button on the user interface several times and select program dry operation 3 Press the ON OFF button of the user interface Result The operation lamp lights up and the system starts operating 4 Press the air flow direction adjust button only for double flow multi flow corner ceiling suspended and wall mounted Refer to 8 4 Adjusting the air flow direction 429 for details To stop 5 Press the ON O...

Page 30: ...ting the master user interface 8 5 1 About setting the master user interface The displays of slave user interfaces show change over under centralised control and slave user interfaces automatically follow the operation mode directed by the master user interface Only the master user interface can select heating or cooling mode 8 5 2 To designate the master user interface VRV DX and Hydrobox 1 Press...

Page 31: ...nfirm the following if your unit is of the following control system type Type Description Group control system 1 user interface controls up to 16 indoor units All indoor units are equally set 2 user interface control system 2 user interfaces control 1 indoor unit in case of group control system 1 group of indoor units The unit is individually operated NOTICE Contact your dealer in case of changing...

Page 32: ...g Refer to Maintenance in the indoor unit manual When the display shows time to clean the air filter ask a qualified service person to clean the filters Refer to Maintenance in the indoor unit manual Keep the indoor unit and user interface at least 1 m away from televisions radios stereos and other similar equipment Failing to do so may cause static or distorted pictures Do NOT place items under t...

Page 33: ...rant temperature is set higher lower cooling heating compared to basic operation The focus under high sensible mode is comfort feeling for the customer The selection method of indoor units is important and has to be considered as the available capacity is not the same as under basic operation For details concerning to Hi sensible applications please contact your installer 9 2 Available comfort set...

Page 34: ...er operation panel with benzine thinner chemical dust cloth etc The panel may get discoloured or the coating peeled off If it is heavily dirty soak a cloth in water diluted neutral detergent squeeze it well and wipe the panel clean Wipe it with another dry cloth In this chapter 10 1 Maintenance after a long stop period 34 10 2 Maintenance before a long stop period 35 10 3 About the refrigerant 35 ...

Page 35: ... same position 10 3 About the refrigerant This product contains fluorinated greenhouse gases Do NOT vent gases into the atmosphere Refrigerant type R410A Global warming potential GWP value 2087 5 NOTICE Applicable legislation on fluorinated greenhouse gases requires that the refrigerant charge of the unit is indicated both in weight and CO2 equivalent Formula to calculate the quantity in CO2 equiv...

Page 36: ...assemble remove reinstall or repair the unit yourself as incorrect dismantling or installation may cause an electric shock or fire Contact your dealer In case of accidental refrigerant leaks make sure there are no naked flames The refrigerant itself is entirely safe non toxic and non combustible but it will generate toxic gas when it accidentally leaks into a room where combustible air from fan he...

Page 37: ...e unit cannot be used if power fluctuation is outside the allowable range Bumps and vibrations are frequent Dust salt harmful gas or oil mist such as sulphurous acid and hydrogen sulfide may be present in the air The machine is started and stopped frequently or operation time is long sites with 24 hour air conditioning Recommended replacement cycle of wear parts Component Inspection cycle Maintena...

Page 38: ... as it goes into heating or cooling operation the system stops Check if air inlet or outlet of outdoor or indoor unit is not blocked by obstacles Remove any obstacles and make sure the air can flow freely Check if the user interface display shows time to clean the air filter Refer to 10 Maintenance and service 4 34 and Maintenance in the indoor unit manual The system operates but cooling or heatin...

Page 39: ...ymptom Hot air can be felt when the indoor unit is stopped 42 11 1 Error codes Overview In case a malfunction code appears on the indoor unit user interface display contact your installer and inform the malfunction code the unit type and serial number you can find this information on the nameplate of the unit For your reference a list with malfunction codes is provided You can depending on the lev...

Page 40: ...d with the user interface display The fan direction does not swing This is because the unit is being controlled by the micro computer 11 2 6 Symptom White mist comes out of a unit Indoor unit When humidity is high during cooling operation If the interior of an indoor unit is extremely contaminated the temperature distribution inside a room becomes uneven It is necessary to clean the interior of th...

Page 41: ...utdoor units A hissing sound which is heard at the start or immediately after stopping operation or defrost operation This is the noise of refrigerant caused by flow stop or flow change 11 2 11 Symptom Noise of air conditioners Outdoor unit When the tone of operating noise changes This noise is caused by the change of frequency 11 2 12 Symptom Dust comes out of the unit When the unit is used for t...

Page 42: ... outdoor unit is warm even when the unit has stopped This is because the crankcase heater is warming the compressor so that the compressor can start smoothly 11 2 18 Symptom Hot air can be felt when the indoor unit is stopped Several different indoor units are being run on the same system When another unit is running some refrigerant will still flow through the unit ...

Page 43: ...and user reference guide 43 RWEYQ8 14T9Y1B VRV IV water cooled system air conditioner 4P452191 1B 2020 10 12 Relocation Contact your dealer for removing and reinstalling the total unit Moving units requires technical expertise ...

Page 44: ...al This unit uses hydrofluorocarbon Contact your dealer when discarding this unit NOTICE Do NOT try to dismantle the system yourself dismantling of the system treatment of the refrigerant oil and other parts MUST comply with applicable legislation Units MUST be treated at a specialised treatment facility for reuse recycling and recovery ...

Page 45: ...wing webpage https energylabel daikin eu 2 To continue choose Continue to Europe for the international website Other country for a country related site Result You are directed to the Seasonal efficiency webpage 3 Under Eco Design Ener LOT 21 click Generate your data Result You are directed to the Seasonal efficiency LOT 21 webpage 4 Follow the instructions on the webpage to select the correct unit...

Page 46: ...For the installer Installer and user reference guide 46 RWEYQ8 14T9Y1B VRV IV water cooled system air conditioner 4P452191 1B 2020 10 For the installer ...

Page 47: ...n 15 2 Overview About the box This chapter describes what you have to do after the box with the outdoor unit is delivered on site It contains information about Unpacking and handling the outdoor unit Removing the accessories from the unit Removing the transportation stay Keep the following in mind At delivery the unit MUST be checked for damage Any damage MUST be reported immediately to the claims...

Page 48: ...weight of the unit A forklift can only be used for transport as long as the unit remains on its pallet as shown above 15 3 To unpack the outdoor unit Remove the packaging material from the unit Take care not to damage the unit when removing the shrink foil with a cutter Remove the 4 bolts fixing the unit to its pallet WARNING Tear apart and throw away plastic packaging bags so that nobody especial...

Page 49: ...tions b Installation manual and operation manual c Additional refrigerant charge label d Installation information sticker e Fluorinated greenhouse gases label f Multilingual fluorinated greenhouse gases label g Piping accessory bag h Hose i Water filter 15 5 Accessory pipes Diameters Accessory pipes mm HP Øa Øb Øc Ød Liquid pipe Front connection a Øa Øb Top connection Øc Ød 8 12 7 12 7 12 7 9 5 10...

Page 50: ...ld pipes for front connection 15 6 To remove the transportation stay NOTICE If the unit is operated with the transportation stay attached abnormal vibration or noise may be generated The compressor transportation stay must be removed It is installed under the compressor leg in order to protect the unit during transport Proceed as shown in the figure and procedure below 1 Remove the bolt 2 Lift the...

Page 51: ... 5 3 Possible combinations of outdoor units 54 16 5 4 Possible options for the outdoor unit 55 16 1 Overview About the units and options This chapter contains information about Identification of the outdoor unit Where the outdoor unit fits in the system layout With which indoor units and options you can combine the outdoor units Which outdoor units have to be used as standalone units and which out...

Page 52: ...ions These units have in single use heating capacities ranging from 25 to 45 kW and cooling capacities ranging from 22 4 to 40 kW When multi combination is used the capacity can go up to 135 kW for heating and 120 kW for cooling The unit is designed to work in heating mode at indoor temperatures from 15 C WB to 27 C WB and in cooling mode at indoor temperatures from 21 C DB to 32 C DB or 14 C WB t...

Page 53: ...face i Cool heat changeover remote control switch j Water system connection Heat recovery system k m e c k l e e e f h b a k l c c k k k j c e i k k c d 1 3 2 5 4 e g c a Unit b Refrigerant piping c Branch selector unit BS d Multi branch selector unit BS e VRV DX indoor unit f Low temperature LT Hydrobox unit g Cooling only VRV indoor unit h High temperature HT Hydrobox unit i EKEXV kit j Air hand...

Page 54: ...ombinations are allowed They are subject to rules combination between outdoor indoor single outdoor unit use multiple outdoor unit use combinations between indoor units etc mentioned in the technical engineering data 16 5 2 Possible combinations of indoor units In general following type of indoor units can be connected to a VRV IV heat recovery system The list is non exhaustive and is depending on...

Page 55: ...4 14 RWEYQ30 RWEYQ10 10 10 RWEYQ32 RWEYQ10 10 12 RWEYQ34 RWEYQ10 12 12 RWEYQ36 RWEYQ12 12 12 RWEYQ38 RWEYQ12 12 14 RWEYQ40 RWEYQ12 14 14 RWEYQ42 RWEYQ14 14 14 16 5 4 Possible options for the outdoor unit INFORMATION Refer to the technical engineering data for the latest option names Refrigerant branching kit In case of heat pump system Description Model name Refnet header KHRQ22M29H KHRQ22M64H KHR...

Page 56: ... INFORMATION The cool heat selector can only be used when the refrigerant system is configured as heat pump system External control adaptor DTA104A61 62 To instruct specific operation with an external input coming from a central control the external control adaptor can be used Instructions group or individual can be instructed for low noise operation and power consumption limitation operation PC c...

Page 57: ...t is level Make sure to install the unit in a machine room that is free of moisture The unit is designed for indoor use only Select the location of the unit in such a way that the sound generated by the unit does not disturb anyone and the location is selected according the applicable legislation Do NOT install the unit in the following places In potentially explosive atmospheres In places where t...

Page 58: ...s for power and transmission lines CAUTION Appliance not accessible to the general public install it in a secured area protected from easy access This unit both indoor and outdoor is suitable for installation in a commercial and light industrial environment When installing take strong winds typhoons or earthquakes into account improper installation may result in the unit turning over Take care tha...

Page 59: ...ncentration is kg m the weight in kg of the refrigerant gas in 1 m volume of the occupied space Compliance to the local applicable regulations and standards for the maximum allowable concentration level is required According to the appropriate European Standard the maximum allowed concentration level of refrigerant to a humanly space for R410A is limited to 0 44 kg m b a a Direction of the refrige...

Page 60: ...ions in steps 1 and 2 above If the result of the above calculation exceeds the maximum concentration level a ventilation opening to the adjacent room shall be made Formula F G H F Total volume of refrigerant in the refrigerant system G Size m of smallest room in which there is an indoor unit installed H Maximum concentration level kg m 4 Calculate the refrigerant density using the total volume of ...

Page 61: ...he outdoor unit 461 For service purposes the pushbuttons on the main PCB need to be accessed To access these pushbuttons the electrical component box cover does not need to be opened See 20 2 3 To access the field setting components 4118 To install the water piping and field wiring front plate B has to be removed 17 2 3 To open the electrical component box of the outdoor unit NOTICE Do NOT apply e...

Page 62: ...door unit 17 3 1 To provide the installation structure Make sure the unit is installed level on a sufficiently strong base to prevent vibration and noise 800 mm 600 mm 516 mm 480 mm 660 mm a Fasten the unit in place using four foundation bolts M12 It is best to screw in the foundation bolts until their length remains 20 mm above the foundation surface 20 mm ...

Page 63: ...rant piping to the outdoor unit 84 18 3 5 To connect the multi connection piping kit 85 18 3 6 To connect the refrigerant branching kit 86 18 3 7 To protect against contamination 86 18 3 8 To braze the pipe end 86 18 3 9 Using the stop valve and service port 87 18 3 10 To remove the spun pipes 89 18 4 Checking the refrigerant piping 91 18 4 1 About checking the refrigerant piping 91 18 4 2 Checkin...

Page 64: ...rials inside pipes including oils for fabrication must be 30 mg 10 m Temper grade use piping with temper grade in function of the pipe diameter as listed in table below Pipe Ø Temper grade of piping material 15 9 mm O annealed 19 1 mm 1 2H half hard All piping lengths and distances have been taken into consideration see 18 1 5 About the piping length 469 The pipe thickness of the refrigerant pipin...

Page 65: ...e Humidity Minimum thickness 30 C 75 to 80 RH 15 mm 30 C 80 RH 20 mm 18 1 3 To select the piping size INFORMATION Please select the proper pipe sizes depending on the mode of your system There are 2 possible modes heat pump heat recovery Determine the proper size using the following tables and reference figure only for indication In case of heat pump system A B B B C D F G E x y b a 3 1 2 4 5 1 2 ...

Page 66: ...apacity type HP Piping outer diameter size mm Gas pipe Liquid pipe 8 19 1 9 5 10 22 2 12 16 28 6 12 7 18 22 15 9 24 34 9 26 34 19 1 36 42 41 3 In case of heat recovery system Outdoor unit capacity type HP Piping outer diameter size mm Liquid pipe Suction gas pipe High pressure low pressure gas pipe 8 9 5 19 1 15 9 10 22 2 19 1 12 12 7 28 6 14 16 22 2 18 15 9 20 22 28 6 24 34 9 26 34 19 1 36 41 3 3...

Page 67: ...sure gas pipe 150 9 5 15 9 12 7 150 x 200 19 1 15 9 200 x 290 22 2 19 1 290 x 420 12 7 28 6 420 x 640 15 9 28 6 640 x 920 19 1 34 9 920 41 3 Example Downstream capacity for E capacity index of unit 1 Downstream capacity for D capacity index of unit 1 capacity index of unit 2 E Piping between refrigerant branch kit or BS unit and indoor unit For heat pump and heat recovery system Pipe size for dire...

Page 68: ...cted indoor units Piping outer diameter size mm Gas pipe Liquid pipe 20 62 12 7 6 4 63 149 15 9 9 5 150 208 19 1 Example Downstream capacity for F capacity index of unit 4 capacity index of unit 5 G Piping between branch selector box BP box and RA DX indoor unit Heat pump system in case of single outdoor unit Only in case RA DX indoor units are connected Indoor unit capacity index Piping outer dia...

Page 69: ...w the refnet header Indoor unit capacity index 2 pipes 3 pipes 200 KHRQ22M29H KHRQ23M29H 200 x 290 290 x 640 KHRQ22M64H a KHRQ23M64H a 640 KHRQ22M75H KHRQ23M75H a If the pipe size above the refnet header is Ø34 9 mm or more KHRQ22M75H is required INFORMATION Maximum 8 branches can be connected to a header How to choose an outdoor multi connection piping kit Choose from the following table in accor...

Page 70: ... Term Definition Distance Actual piping length Pipe length between outdoor a and indoor units 165 m Equivalent piping length b Pipe length between outdoor a and indoor units 190 m Total piping length Total piping length from the outdoor a to all indoor units 300 m H1 Height difference between outdoor and indoor units 50 40 m b H2 Height difference between indoor units 15 m 30 m c H3 Height differe...

Page 71: ... setting Refer to the service manual for more information The outdoor unit is positioned lower than the indoor units Minimum connection ratio varies according to the height difference between outdoor and indoor units 40 60 m 80 60 65 m 90 65 80 m 100 80 90 m 110 Size up the liquid piping refer to 18 1 3 To select the piping size 465 for more information Activate the outdoor unit setting Refer to t...

Page 72: ...length 1 2 3 5 6 300 m a If the equivalent piping length is more than 90 m size up the main liquid piping according to 18 1 3 To select the piping size 465 Connection with VRV DX indoor units and Hydrobox units a 4 H1 H2 H3 H2 H2 a a b b c 6 2 5 1 3 a Outdoor unit b VRV DX indoor unit c Low temperature LT Hydrobox unit Pipe Maximum length actual equivalent Longest pipe from the outdoor unit or the...

Page 73: ... pipe after the first branch 3 4 3 5 6 3 5 7 40 m Total pipe length 1 2 3 4 5 6 7 8 9 250 m Between branch selector box BP and indoor unit Indoor unit capacity index Pipe length 60 2 15 m 60 2 12 m 71 2 8 m Remark Minimum allowable length between the outdoor unit and first refrigerant branch kit must be larger than 5 m e g a 5 m If the piping length between the first branch and branch selector box...

Page 74: ...it BS d Multi branch selector unit BS e EKEXV kit f Air handling unit AHU Pipe Maximum length actual equivalent Longest pipe from the outdoor unit or the last multi outdoor piping branch 1 2 1 3 1 5 165 m 190 m a Longest pipe after the first branch 2 3 5 40 m In case of a multi outdoor setup longest pipe from the outdoor unit to the last multi outdoor piping branch 4 10 m 13 m Total pipe length 30...

Page 75: ...T Hydrobox unit e High temperature HT Hydrobox unit Pipe Maximum length actual equivalent Longest pipe from the outdoor unit or the last multi outdoor piping branch 1 2 1 3 1 5 120 m 140 m a Longest pipe after the first branch 2 3 5 40 m In case of a multi outdoor setup longest pipe from the outdoor unit to the last multi outdoor piping branch 4 10 m 13 m Total pipe length 300 m a If the equivalen...

Page 76: ... branch selector unit BS Longest pipe from the outdoor unit or the last multi outdoor piping branch 1 2 1 3 1 5 165 m 190 m a Longest pipe after the first branch 2 3 5 40 m In case of a multi outdoor setup longest pipe from the outdoor unit to the last multi outdoor piping branch 4 10 m 13 m Total pipe length 300 m 18 1 7 Multiple outdoor units Possible layouts The piping between the outdoor units...

Page 77: ...r the branch install a trap of 200 mm or more using the piping included in the piping kit for connecting the outdoor unit Otherwise the refrigerant may stay in the piping causing damage to the outdoor unit 200 mm If Then 2 m 2 m b a 2 m b a 2 m 2 m 200 mm 200 mm 2 m 2 m a To indoor unit b Piping between outdoor units NOTICE There are restrictions on the refrigerant pipe connection order between ou...

Page 78: ...2 l 4 0 0 4 4 0 Stability index 6 0 7 0 a These items represent typical causes of corrosion and scale b In a condenser water circuit that uses a closed cooling tower the closed circuit circulating water and make up water MUST meet the water quality standards for the hot water system and passing water and make up water MUST satisfy those for the circulation type cooling water system c Corrosion has...

Page 79: ...he circuit problems may occur To prevent this Only use clean pipes Hold the pipe end downwards when removing burrs Cover the pipe end when inserting it through a wall to prevent dust and or particles from entering the pipe Use a decent thread sealant to seal connections Piping work Dripping The outdoor unit is intended for indoor installation Carry out piping work in such a way that no water drips...

Page 80: ... used Because of a different structure from a conventional heat exchanger it MUST be handled in a different manner Install a water filter at the water inlet in order to prevent foreign materials such as dust sand from entering the plate heat exchanger Scale can stick to the plate heat exchanger depending on water quality To remove scale cleaning is necessary at regular intervals using chemicals In...

Page 81: ...e water flow rate function is not used A pressure independent flow regulating valve b the valve controls the flow rate of a centralized inverter pump through the unit Inverter pump c the pump directly controls the water flow rate through the unit To activate the variable flow system change field setting 2 24 to the applicable value See 20 2 Making field settings 4116 NOTICE Make sure that all fiel...

Page 82: ...ystem maximum required flow rate A is a property of the supplied valve and the 50 flow rate B is directly related to the maximum flow rate of the system INFORMATION Some third party valves pumps have a maximum flow rate defined by the hardware of the system but a different maximum flow rate can be set to correspond with the maximum input voltage 10 V DC The installer should ask information to the ...

Page 83: ...ting the refrigerant piping to the outdoor unit Protecting the outdoor unit against contamination Connecting the refrigerant piping to the indoor units see the installation manual of the indoor units Connecting the multi connection piping kit Connecting the refrigerant branching kit Keeping in mind the guidelines for Brazing Using the stop valves Removing the pinched pipes 18 3 2 Precautions when ...

Page 84: ...en connected make sure there is no gas leak Use nitrogen to perform a gas leak detection 18 3 3 To route the refrigerant piping Installation of refrigerant piping is possible as top connection standard or front connection In case of top connection a In case of front connection Remove and change the position of the pipe service plate a as shown in figure below a 18 3 4 To connect the refrigerant pi...

Page 85: ...sing Connect the stop valves to the field piping using the accessory pipes supplied with the unit The connections to the branch kits are the responsibility of the installer field piping 18 3 5 To connect the multi connection piping kit NOTICE Improper installation may lead to malfunction of the outdoor unit Install the joints horizontally so that the caution label a attached to the joint comes to ...

Page 86: ...mounted horizontally 18 3 7 To protect against contamination Protect the piping as described in the following table to prevent dirt liquid or dust from entering the piping Unit Installation period Protection method Outdoor unit 1 month Pinch the pipe 1 month Pinch or tape the pipe Indoor unit Regardless of the period Seal the piping and wiring intake holes using sealing material field supply other...

Page 87: ...copper refrigerant piping Use phosphor copper brazing filler alloy BCuP which does not require flux Flux has an extremely harmful influence on refrigerant piping systems For instance if chlorine based flux is used it will cause pipe corrosion or in particular if the flux contains fluorine it will deteriorate the refrigerant oil Always protect the surrounding surfaces e g insulation foam from heat ...

Page 88: ...ny further stop turning 4 Install the stop valve cover Result The valve is now open To fully open the Ø19 1 Ø25 4 mm stop valve turn the hexagonal wrench until a torque between 27 and 33 N m is achieved Inadequate torque may cause leakage of refrigerant and breakage of the stop valve cap To close the stop valve 1 Remove the stop valve cover 2 Insert a hexagon wrench into the stop valve and turn th...

Page 89: ...htening torques Stop valve size mm Tightening torque N m turn clockwise to close Shaft Valve body Hexagonal wrench Cap valve lid Service port Ø9 5 5 4 6 6 4 mm 13 5 16 5 11 5 13 9 Ø12 7 8 1 9 9 18 0 22 0 Ø15 9 13 5 16 5 6 mm 23 0 27 0 Ø19 1 27 0 33 0 8 mm 22 5 27 5 Ø25 4 18 3 10 To remove the spun pipes NOTICE In case of heat pump system do NOT remove the spun pipe of the suction gas stop valve WA...

Page 90: ...TICE Do not connect the vacuum pump to the suction gas stop valve if the unit is intended to run as a heat pump system This will increase the risk of unit failure 3 Recover gas and oil from the spun piping by using a recovery unit CAUTION Do not vent gases into the atmosphere 4 When all gas and oil is recovered from the spun piping disconnect the charge hose and close the service ports 5 Cut off t...

Page 91: ... checking the refrigerant piping Refrigerant piping works are finished The indoor units and or outdoor unit were already powered ON Use procedure Method 2 After power ON Finish piping work Use procedure Method 1 Before power ON regular method Yes No No Yes It is very important that all refrigerant piping work is done before the units outdoor or indoor are powered on When the units are powered on t...

Page 92: ...efrigerant piping for example water may have entered the piping first carry out the vacuum drying procedure below until all moisture has been removed All piping inside the unit has been factory tested for leaks Only field installed refrigerant piping needs to be checked Therefore make sure that all the outdoor unit stop valves are firmly closed before performing leak test or vacuum drying NOTICE M...

Page 93: ... to the suction gas stop valve if the unit is intended to run as a heat pump system This will increase the risk of unit failure Valve State of valve Valve A Open Valve B Open Valve C Open Valve D Open Liquid line stop valve Close Gas line stop valve Close High pressure low pressure gas line stop valve Close NOTICE The connections to the indoor units and all indoor units should also be leak and vac...

Page 94: ...ammonia which may lead to corrosion of flared joints between the brass flare nut and the copper flare 18 4 5 To perform vacuum drying NOTICE The connections to the indoor units and all indoor units should also be leak and vacuum tested Keep if existing all field supplied field valves to the indoor units open as well Leak test and vacuum drying should be done before the power supply is set to the u...

Page 95: ...e of 70 C for liquid piping and polyethylene foam which can withstand a temperature of 120 C for gas piping Reinforce the insulation on the refrigerant piping according to the installation environment If there is a possibility that condensation on the stop valve might drip down into the indoor unit through gaps in the insulation and piping because the outdoor unit is located higher than the indoor...

Page 96: ...ttached the unit cannot judge correctly whether it is operating properly or not 18 5 2 About charging refrigerant The outdoor unit is factory charged with refrigerant but depending on the field piping you have to charge additional refrigerant Make sure the outdoor unit s external refrigerant piping is checked leak test vacuum drying Charging additional refrigerant typically consists of the followi...

Page 97: ...id piping size at Øa A Parameter A C Parameter C Parameter A If the total indoor unit capacity connection ratio CR 100 charge an additional 0 5 kg of refrigerant per outdoor unit Parameter C When using more than one multi BS unit add the sum of the individual BS unit charge factors Model C BS1Q10 0 05 kg BS1Q16 0 1 kg BS1Q25 0 2 kg BS4Q 0 3 kg BS6Q 0 4 kg BS8Q 0 5 kg BS10Q 0 7 kg BS12Q 0 8 kg BS16...

Page 98: ...ve open valve B Make sure that all outdoor unit stop valves as well as valves A C and D are closed NOTICE During pre charging the refrigerant is charged through the liquid line only Close valves C D and A and disconnect the manifold from the gas line and the high pressure low pressure gas line p p R410A N2 C 1 D b c e a g h f d A B a Pressure reducing valve b Nitrogen c Weighing scales d Refrigera...

Page 99: ...A INFORMATION For a multi outdoor unit system it is not required to connect all charge ports to a refrigerant tank The refrigerant will be charged with 22 kg in 1 hour time at an outdoor temperature of 30 C DB or with 6 kg at an outdoor temperature of 0 C DB If you need to speed up in case of a multiple outdoor system connect the refrigerant tanks to each outdoor unit NOTICE The refrigerant chargi...

Page 100: ...t and attach it to the backside of the front panel Perform the test procedure described in 21 Commissioning 4128 INFORMATION Aborting the manual refrigerant charge is possible by pushing BS3 The unit will stop and return to idle condition 18 5 5 Checks after charging refrigerant Are all stop valves open Is the amount of refrigerant that has been added recorded on the refrigerant charge label NOTIC...

Page 101: ...s and liquid stop valves 18 6 Connecting water piping 18 6 1 About connecting the water piping Before connecting the water piping Make sure the outdoor and indoor units are mounted Typical workflow Connecting the water piping typically consists of the following stages 1 Connecting the water piping of the outdoor unit 2 Filling the water circuit 3 Insulating the water piping 18 6 2 Precautions when...

Page 102: ...erwise the plate heat exchanger will freeze 4 Check if the water flow rate is correct otherwise the plate heat exchanger will freeze Measure any water pressure loss before and after running the pump and make sure that the flow rate is correct If not stop the pump immediately and carry out troubleshooting 18 6 5 To insulate the water piping The outdoor water piping MUST be insulated to prevent cond...

Page 103: ...ring 111 19 5 To route and fix the power supply 111 19 6 To connect the power supply 112 19 7 To connect the optional wiring 113 19 8 To check the insulation resistance of the compressor 115 19 1 About connecting the electrical wiring Typical workflow Connecting the electrical wiring typically consists of the following stages 19 1 1 Precautions when connecting the electrical wiring DANGER RISK OF ...

Page 104: ...installing the earth leakage protector make sure it is compatible with the inverter resistant to high frequency electric noise to avoid unnecessary opening of the earth leakage protector Install power cables at least 1 m away from televisions or radios to prevent interference Depending on the radio waves a distance of 1 m may not be sufficient WARNING After finishing the electrical work confirm th...

Page 105: ...thed cable 16 V i Outdoor power supply wiring sheathed cable Power supply 3N 50 Hz Power supply 1 50 Hz Earth wiring In case of heat recovery system B i a b f c f e g d c h j j i a Field power supply with earth leakage protector b Main switch c Earth connection d Outdoor unit e Indoor unit f User interface g BS unit h Cool heat selector i Circuit breaker j Fuse Power supply 3N 50 Hz Power supply 1...

Page 106: ... wrapped and routed together with the field piping Be sure to follow the limits below If the unit to unit cables are beyond these limits it may result in malfunction of transmission Description Limitation Maximum wiring length 1000 m Total wiring length 2000 m Maximum inter unit wiring length between outdoor units 30 m Transmission wiring to cool heat selector 500 m Maximum number of branches for ...

Page 107: ...uit power Ssc is greater than or equal to the minimum Ssc value at the interface point between the user s supply and the public system EN IEC 61000 3 12 European International Technical Standard setting the limits for harmonic currents produced by equipment connected to public low voltage systems with input current 16 A and 75 A per phase It is the responsibility of the installer or user of the eq...

Page 108: ...T9 16 4 A 20 A RWEYQ12T9 19 4 A 25 A RWEYQ14T9 22 3 A 25 A RWEYQ16T9 31 0 A 32 A RWEYQ18T9 31 9 A 32 A RWEYQ20T9 32 7 A 35 A RWEYQ22T9 35 8 A 40 A RWEYQ24T9 38 9 A 40 A RWEYQ26T9 41 7 A 50 A RWEYQ28T9 44 6 A 50 A RWEYQ30T9 49 1 A 50 A RWEYQ32T9 52 2 A 63 A RWEYQ34T9 55 3 A 63 A RWEYQ36T9 58 3 A 63 A RWEYQ38T9 61 2 A 63 A RWEYQ40T9 64 0 A 80 A RWEYQ42T9 66 9 A 80 A For all models Phase and frequenc...

Page 109: ...the recommended fuse capacity would be 63 A NOTICE When using residual current operated circuit breakers be sure to use a high speed type 300 mA rated residual operating current 19 2 To route and fix the transmission wiring Transmission wiring can be routed through the front side only Fix it to the upper mounting hole A1P F1 F1 F2 F2 Q1 Q2 TOIN DUNIT TOOUT DUNIT TOMULTIUNIT A A Fix to the indicate...

Page 110: ... Q1 Q2 A1P a b c d f F1 F2F1F2 F1 F2F1F2 TO IN D UNIT TO OUT D UNIT TO IN D UNIT TO OUT D UNIT F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 j i i h h e a Unit A master outdoor unit b Unit B slave outdoor unit c Unit C slave outdoor unit d Outdoor unit PCB A1P e Master slave transmission Q1 Q2 f Outdoor indoor transmission F1 F2 g Outdoor unit other system transmission F1 F2 h BS unit i Indoor unit j Coolin...

Page 111: ...in figure below b a f c d f e f a Liquid pipe b Gas pipe c Finishing tape d High pressure low pressure gas pipe e Transmission wiring F1 F2 f Insulator 19 5 To route and fix the power supply NOTICE When routing earth wires secure clearance of 25 mm or more away from compressor lead wires Failure to observe this instruction properly may adversely affect correct operation of other units connected to...

Page 112: ...round NOTICE When connecting the earth wire align the wire with the cut out section of the cup washer Incomplete earthing may cause electrical shock The power supply MUST be clamped to the plastic bracket using field supplied clamp material to prevent external force being applied to the terminal The green and yellow striped wire MUST be used for earthing only e i f b a c d h e g a Power supply 380...

Page 113: ...alve pump should be connected to the X2M connector in the electrical switchbox To connect the valve pump to the outdoor unit also provide a separate 12 V DC power supply with an output power of at least 50 mW to the X2M connector Connect the valve pump to X2M terminals 2 and 3 Connect the power source to X2M terminals 1 and 3 respect the polarity BLK INTER LOCK TW1 IN TW2 OUT WHT BLU BLU BLU YLW O...

Page 114: ...o will result in unintended forced thermo off conditions Example X3M X3M YLW a b c d e ORG RED BRN BLU BLU WHT WHT BLK BLK BLK TW1 IN TW2 OUT WHT BLU BLU BLU YLW ORG RED BRN 0 10 1 2 3 4 5 6 7 8 9 10 X2M b a X2M a Relay normally closed field supply b Flow switch field supply Multifunction outputs To monitor the outdoor unit operation or trigger field supplied equipment connected to the outdoor uni...

Page 115: ...an drop but if it is at least 1 MΩ then the unit will not break down Use a 500 V mega tester when measuring insulation Do NOT use a mega tester for low voltage circuits 1 Measure the insulation resistance over the poles If Then 1 MΩ Insulation resistance is OK This procedure is finished 1 MΩ Insulation resistance is not OK Go to the next step 2 Turn ON the power and leave it on for 6 hours Result ...

Page 116: ...ettings Energy saving and optimum operation Using the leak detection function INFORMATION It is important that all information in this chapter is read sequentially by the installer and that the system is configured as applicable DANGER RISK OF ELECTROCUTION 20 2 Making field settings 20 2 1 About making field settings To continue the configuration of the VRV IV heat recovery system it is required ...

Page 117: ... 2 field settings Mode 2 is used to change the field settings of the system Consulting the current field setting value and changing the current field setting value is possible In general normal operation can be resumed without special intervention after changing field settings Some field settings are used for special operation e g 1 time operation recovery vacuuming setting manual adding refrigera...

Page 118: ...nto the electronic component box cover and to close the front plate s inspection cover after the job is finished During operation of the unit the front plate of the unit should be attached Settings are still possible to be made through the inspection opening NOTICE Make sure that all outside panels except for the service cover on the electrical component box are closed while working Close the lid ...

Page 119: ...on Mode 1 Push BS1 one time 7 segment display indication changes to Push BS1 one more time to return to the default situation Mode 2 Push BS1 for at least 5 seconds 7 segment display indication changes to Push BS1 one more time shortly to return to the default situation INFORMATION If you get confused in the middle of the process push BS1 to return to the default situation no indication on 7 segme...

Page 120: ...e 2 Mode 2 is used to set field settings of the outdoor unit and system What How Changing and accessing the setting in mode 2 Once mode 2 is selected push BS1 for more than 5 seconds you can select the wanted setting It is done by pushing BS2 Accessing the selected setting s value is done by pushing BS3 1 time To quit and return to the initial status Press BS1 Changing the value of the selected se...

Page 121: ...Mode 1 Monitoring settings 1 0 Shows whether the unit you check is a master slave 1 or slave 2 unit Master slave 1 and slave 2 indications are relevant in multiple outdoor unit system configurations The allocation of which outdoor unit is master slave 1 or slave 2 are decided by the unit s logic The master unit should be used to input field settings in mode 2 1 0 Description No indication Undefine...

Page 122: ... wiring path between outdoor and outdoor units Q1 Q2 communication line 1 17 1 18 1 19 Shows 1 17 The latest malfunction code 1 18 The 2nd last malfunction code 1 19 The 3rd last malfunction code When the latest malfunction codes were reset by accident on an indoor unit user interface they can be checked again through this monitoring settings For the content or reason behind the malfunction code s...

Page 123: ...d Further instructions regarding the different ways to charge additional refrigerant into your system can be found in chapter 18 5 2 About charging refrigerant 496 2 20 Description 0 default Deactivated 1 Activated To stop the manual additional refrigerant charge operation when the required additional refrigerant amount is charged push BS3 If this function was not aborted by pushing BS3 the unit w...

Page 124: ...ump control 1 Each unit has a pump valve 2 Water pump valve control is OFF or 1 pump valve per system 3 Each unit has a pump valve pump is OFF when slave unit does not operate Minimum water flow rate limit control To change the minimum water flow rate limit of the variable flow system change the setting to the applicable value The flow rate limit is according to the table 2 25 Minimum water flow r...

Page 125: ...tion no external control adaptor is required to perform power consumption limitation If the system always needs to be running under power consumption limitation conditions this setting activates and defines the level power consumption limitation that will be applied continuously The level is according to the table 2 32 Restriction reference 0 default Function not active 1 Follows 2 30 setting 2 Fo...

Page 126: ...N with priority on cooling capacity 2 ON with priority on zero energy dissipation Zero energy dissipation control can be OFF if the mechanical room is already equipped with a ventilation system or air conditioning system for other facilities 2 74 Zero energy dissipation setting temperature If the unit internal temperature is higher than the zero energy dissipation setting temperature the zero ener...

Page 127: ...air conditioner 4P452191 1B 2020 10 This setting is used in conjunction with setting 2 9 2 82 Heating comfort setting 0 Eco 1 default Mild 2 Quick 3 Powerful 20 2 9 To connect the PC configurator to the outdoor unit X 2 7 A a b c 2 3 4 5 H J S T X27A A1P a PC b Cable EKPCCAB c Outdoor unit main PCB ...

Page 128: ...completion of the test run 132 21 7 Operating the unit 132 21 1 Overview Commissioning After installation and once the field settings are defined the installer is obliged to verify correct operation Therefore a test run MUST be performed according to the procedures described below This chapter describes what you have to do and know to commission the system after it is configured Commissioning typi...

Page 129: ...tallation and operation instructions as described in the installer and user reference guide Installation Check that the unit is properly installed to avoid abnormal noises and vibrations when starting up the unit Field wiring Be sure that the field wiring has been carried out according to the instructions described in the chapter 19 Electrical installation 4 103 according to the wiring diagrams an...

Page 130: ...t shall be written on the included Added refrigerant plate and attached to the rear side of the front cover Installation date and field setting Be sure to keep record of the installation date on the sticker on the rear of the upper front panel according to EN60335 2 40 and keep record of the contents of the field setting s Inspect the water filter at the inlet piping of the outdoor unit Clean if i...

Page 131: ...he electrical component box inspection opening service cover 2 Make sure all field settings you want are set see 20 2 Making field settings 4116 3 Turn ON the power to the outdoor unit and the connected indoor units NOTICE Be sure to turn ON the power 6 hours before operation in order to have power running to the crankcase heater and to protect the compressor 4 Make sure the default idle situation...

Page 132: ...after abnormal completion of the test run The test operation is only completed if there is no malfunction code displayed on the user interface or outdoor unit 7 segment display In case of a displayed malfunction code perform correcting actions as explained in the malfunction code table Carry out the test operation again and confirm that the abnormality is properly corrected INFORMATION Refer to th...

Page 133: ...s 133 22 2 Maintenance of the plate heat exchanger 134 22 2 1 To clean the plate heat exchanger 134 22 3 About service mode operation 135 22 3 1 To use vacuum mode 135 22 3 2 To recover refrigerant 135 22 1 Maintenance safety precautions DANGER RISK OF ELECTROCUTION DANGER RISK OF BURNING SCALDING NOTICE Risk of electrostatic discharge Before performing any maintenance or service work touch a meta...

Page 134: ...tion port and a stop valve after the outlet water connection port Prerequisite Use a solution with 5 diluted formic citric oxalic acetic or phosphoric acid for cleaning scale NEVER use hydrochloric sulphuric or nitric acid because such solutions have a strong corrosive feature 1 Connect the piping for circulation of cleaning chemicals to the inlet piping of the plate heat exchanger 2 Fill a cleani...

Page 135: ...isplay indication and the user interface of all indoor units indicate TEST test operation and external control and the operation will be prohibited 2 Evacuate the system with a vacuum pump 3 Press BS3 to stop vacuuming mode 22 3 2 To recover refrigerant This should be done with a refrigerant recovery unit Follow the same procedure as for vacuuming method DANGER RISK OF EXPLOSION Pump down Refriger...

Page 136: ...ecting actions as explained in the malfunction code table After correcting the abnormality press BS3 to reset the malfunction code and retry operation The malfunction code which is displayed on the outdoor unit will indicate a main malfunction code and a sub code The sub code indicates more detailed information about the malfunction code The malfunction code will be displayed intermittent Example ...

Page 137: ...onditioner 4P452191 1B 2020 10 24 Disposal NOTICE Do NOT try to dismantle the system yourself dismantling of the system treatment of the refrigerant oil and other parts MUST comply with applicable legislation Units MUST be treated at a specialised treatment facility for reuse recycling and recovery ...

Page 138: ...ailable on the Daikin Business Portal authentication required In this chapter 25 1 Service space Outdoor unit 138 25 2 Piping diagram Outdoor unit 139 25 3 Wiring diagram Outdoor unit 140 25 1 Service space Outdoor unit Make sure the space around the unit is adequate for servicing and the minimum space for ventilation is available refer to the figure below mm 500 500 900 900 20 20 20 20 20 20 F mm...

Page 139: ...it A C D B B B SV SV SV M SV SV HPS SV SV SENPH SENPL 4D108945A A Charge port B Stop valve with service port 7 9 mm flare connection C Cooling water inlet D Cooling water outlet Charge port Service port Filter Check valve Pressure relief valve Solenoid valve Capillary tube Electronic expansion valve 4 way valve Propeller fan Port for sensor Low high pressure sensor ...

Page 140: ...unit Notes to go through before starting the unit Symbols Symbols X1M Main terminal Earth wiring 15 Wire number 15 Field wire Field cable 12 2 Connection continues on page 12 column 2 1 Several wiring possibilities Option Not mounted in switch box Wiring depending on model PCB 1 Refer to the installation or service manual on how to use BS1 BS3 push buttons and DS1 DS2 DIP switches 2 Do not operate...

Page 141: ... A 250 V F402U A2P Fuse T 6 3 A 250 V F403U A2P Fuse T 6 3 A 250 V F410U A2P Fuse T 63 A 600 V F411U A2P Fuse T 63 A 600 V F412U A2P Fuse T 63 A 600 V F U A1P Fuse T 3 15 A 250 V HAP A1P Running LED service monitor green K1M A3P Magnetic contactor K R A P Magnetic relay L R Reactor M1C Motor compressor M F Motor fan PS A1P Power supply Q1DI Earth leakage circuit breaker Q1RP A1P Phase reversal det...

Page 142: ...gment display T1A Leakage current detection sensor V1R A3P IGBT power module V2R A3P Diode module X66A Connector remote switching cool heat selector X A PCB connector X M Terminal strip X M A P Terminal strip on PCB X Y Connector Y E Electronic expansion valve Y S Solenoid valve Z C Noise filter ferrite core Z F Noise filter Optional Field supply ...

Page 143: ...in product or application explaining how to install configure and maintain it Operation manual Instruction manual specified for a certain product or application explaining how to operate it Maintenance instructions Instruction manual specified for a certain product or application which explains if relevant how to install configure operate and or maintain the product or application Accessories Labe...

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