Daikin SEHVX-BAW Installer And User Manual Download

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Installer and user reference guide

Split packaged air-cooled water chiller

English

Installer and user

reference guide

Split packaged air-cooled water chiller

SERHQ020BAW1
SERHQ032BAW1

SEHVX20BAW
SEHVX32BAW
SEHVX40BAW
SEHVX64BAW

Summary of Contents for SEHVX-BAW

Page 1: ... user reference guide Split packaged air cooled water chiller English Installer and user reference guide Split packaged air cooled water chiller SERHQ020BAW1 SERHQ032BAW1 SEHVX20BAW SEHVX32BAW SEHVX40BAW SEHVX64BAW ...

Page 2: ...outdoor unit 17 6 2 5 To open the electrical component box of the indoor unit 18 6 3 Mounting the outdoor unit 18 6 3 1 About mounting the outdoor unit 18 6 3 2 Precautions when mounting the outdoor unit 18 6 3 3 To provide the installation structure 18 6 3 4 To provide drainage 18 6 4 Mounting the indoor unit 18 6 4 1 About mounting the indoor unit 18 6 4 2 Precautions when mounting the indoor un...

Page 3: ...Field settings on the outdoor unit 59 12 11 ESP curve Indoor unit 60 For the user 60 13 About the system 60 13 1 System layout 60 14 User interface 61 15 Before operation 61 16 Operation 62 16 1 Operation range 62 16 2 Quick start up 62 16 3 Operating the system 63 16 3 1 About the clock 63 16 3 2 About operating the system 64 16 3 3 Space cooling operation 64 16 3 4 Space heating operation 64 16 ...

Page 4: ...By ensuring waste batteries are disposed of correctly you will help to prevent potential negative consequences for the environment and human health 1 3 For the installer 1 3 1 General If you are NOT sure how to install or operate the unit contact your dealer NOTICE Improper installation or attachment of equipment or accessories could result in electric shock short circuit leaks fire or other damag...

Page 5: ...or 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 the refrige...

Page 6: ...an earth leakage protector Failure to do so may cause electric shock or fire When 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 NOTICE Precautions when laying power wiring Do NOT connect wiring of different thicknesses to the power terminal block slack in the...

Page 7: ...ration What to do and know to configure the system after it is installed Operation Operation of the units Commissioning What to do and know to commission the system after it is configured Hand over to the user What to give and explain to the user Maintenance and service How to maintain and service the units Troubleshooting What to do in case of problems Disposal How to dispose of the system Techni...

Page 8: ...rklift arms with a cloth to prevent damaging the unit If the paint on the bottom frame peels off the anti corrosion effect may decrease 3 2 3 To remove the accessories from the outdoor unit Make sure that all accessories are available in the unit 1 1 1 1 1 1 1 e a c d f g b a General safety precautions b Fluorinated greenhouse gases label c Multilingual fluorinated greenhouse gases label d Gas sid...

Page 9: ...ing the split system with options Where the outdoor and indoor units fit in the system layout 4 2 Identification NOTICE When installing or servicing several units at the same time make sure NOT to switch the service panels between different models 4 2 1 Identification label Outdoor unit Location Model identification Example SE RH Q 020 BA W1 Code Explanation SE Special European model RH Outdoor lo...

Page 10: ...wn area Heating 0 35 25 5 15 5 EWC 20 25 35 50 LWC TA A B TA Ambient temperature C DB LWC Leaving water condenser temperature C EWC Entering water condenser temperature C A Pull up area B Standard water operation range 4 3 Combining units and options 4 3 1 Possible options for the split system INFORMATION Refer to the technical engineering data for the latest option names Remote controller EKRUAHT...

Page 11: ...cause water leakage NOTICE This is a class A product In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures CAUTION Appliance NOT accessible to the general public install it in a secured area protected from easy access This unit is suitable for installation in a commercial and light industrial environment When installing...

Page 12: ...ter leakage NOTICE This is a class A product In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures CAUTION Appliance NOT accessible to the general public install it in a secured area protected from easy access This unit is suitable for installation in a commercial and light industrial environment 5 3 Preparing refrigera...

Page 13: ... or particles entering the pipe Use a decent thread sealant to seal connections Capacity class Minimum required flow rate 20 23 l min 32 36 l min 40 46 l min 64 72 l min Field supply components Water pressure and temperature Check that all components in the field piping can withstand the water pressure and water temperature Drainage Low points Provide drain taps at all low points of the system in ...

Page 14: ... 152 64 220 INFORMATION In critical processes or in rooms with a high heat load extra water might be required INFORMATION The temperature step difference can be modified using settings A 02 and F 00 This has an impact on the minimum water volume required when the unit operates in cooling By default the unit is set to have a water temperature difference of 3 5 K which allows it to operate with the ...

Page 15: ...nto account Only use dry nitrogen to set the expansion vessel pre pressure Inappropriate setting of the expansion vessel pre pressure will lead to malfunction of the system Changing the pre pressure of the expansion vessel should be done by releasing or increasing nitrogen pressure through the Schrader valve of the expansion vessel a a Schrader valve 5 4 5 To check the water volume Examples Exampl...

Page 16: ... 0 25 1639 SEHVX64BAW 0 22 1747 The local wiring power cord must comply with IEC60245 The wiring type in protected pipes must be H05VV H07RN F must be used in unprotected pipes 5 5 3 Cable requirements Item Cable bundle Description Required number of conductors Maximum running current 1 PS Indoor unit power supply 4 GND b 2 LV Communication cable between indoor unit and outdoor unit 2 d d 3 LV Sta...

Page 17: ...he outdoor unit on page 17 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 7 2 3 To access the field setting components on page 35 6 2 3 To open the indoor unit DANGER RISK OF ELECTROCUTION DANGER RISK OF BURNING To gain access to the unit front plates need to be opened as follows...

Page 18: ...t allowed O Allowed The height of the foundation must at least be 150 mm from the floor In heavy snowfall areas this height should be increased depending on the installation place and condition The preferred installation is on a solid longitudinal foundation steel beam frame or concrete 722 737 67 67 765 67 67 A B Minimum foundation Outdoor unit A B SERHQ020 930 792 SERHQ032 1240 1102 Fasten the u...

Page 19: ...f the top plate b a a Attach one L shaped support to the left side of the top plate using 2 screws from the accessory bag b Attach the other L shaped support to the right side of the top plate using 1 screw from the accessory bag and 1 screw that is already attached to the unit 6 5 Connecting the refrigerant piping 6 5 1 Precautions when connecting the refrigerant piping INFORMATION Also read the ...

Page 20: ...The following illustrations show each part required in handling the valve c d a b a Service port and service port cover b Stop valve c Field piping connection d Stop valve cover a b c d e a Service port b Stop valve cover c Hexagon hole d Shaft e Seal Keep both stop valves open during operation Do NOT apply excessive force to the stop valve Doing so may break the valve body To open close the stop ...

Page 21: ...f refrigerant gas leaks ventilate the area immediately Possible risks Excessive refrigerant concentrations in a closed room can lead to oxygen deficiency Toxic gas may be produced if refrigerant gas comes into contact with fire WARNING NEVER directly touch any accidental leaking refrigerant This could result in severe wounds caused by frostbite The refrigerant piping can be installed from the fron...

Page 22: ...llowing remaining oil to drip out in case the recovery was not complete Wait until all oil has dripped out 8 Cut the pinched piping off with a pipe cutter just above the brazing point or just above the marking if there is no brazing point 9 Wait until all oil is dripped out in case the recovery was not complete and only then proceed with connection of the field piping a b c b c B A a Service port ...

Page 23: ...s when checking the refrigerant piping INFORMATION Also read the precautions and requirements in the following chapters General safety precautions Preparation NOTICE Use a 2 stage vacuum pump with a non return valve that can evacuate to a gauge pressure of 100 7 kPa 1 007 bar 5 Torr absolute Make sure the pump oil does not flow oppositely into the system while the pump is not working NOTICE Use th...

Page 24: ...p the refrigerant charging process it is in case of larger systems recommended to first pre charge a portion of refrigerant through the liquid line before proceeding with the actual automatic or manual charging This step is included in below procedure see 6 7 4 To charge refrigerant on page 25 It can be skipped but charging will take longer then 6 7 2 Precautions when charging refrigerant INFORMAT...

Page 25: ...nt through this port Step 6a To automatically charge refrigerant INFORMATION The automatic refrigerant charging has limits as described below Out of these limits the system cannot operate the automatic refrigerant charging Outdoor temperature 0 43 C DB Indoor temperature 20 32 C DB Total indoor unit capacity 80 The remaining additional refrigerant charge can be charged by operating the outdoor uni...

Page 26: ...tart the complete charging procedure 5 Press BS4 to perform the temperature range check Result If the temperature is outside the temperature range press BS1 once and complete refrigerant charging at another time when the temperature is within range Out of outdoor temperature range Out of indoor temperature range Within range 6 Press BS1 once to complete charging 7 Record the amount that was added ...

Page 27: ...rect the malfunction as indicated on the user interface display and restart the complete charging procedure 5 Press BS1 once to complete charging 6 Record the amount that was added on the additional refrigerant charge label provided with the unit and attach it on the back side of the front panel 7 Perform the test procedure described in 8 6 2 Refrigerant added using manual charging cooling mode on...

Page 28: ...onfirm Result LEDs will be blinking in function of the last entered setting factory setting 0 kg 5 Enter the weighed and already recorded amount of additional refrigerant charge not the total amount of refrigerant present in the system by selecting the corresponding LED display Press BS2 to scroll through the possible LED combinations until the LED combination corresponds to the weight of addition...

Page 29: ...ting valve must be installed in the water system The regulating valve is to be used to regulate the water flow in the system field supply 6 8 4 To fill the water circuit 1 Connect the water supply to the drain and fill valve 2 Make sure the automatic air purge valve is open at least 2 turns 3 Fill with water until the pressure gauge indicates a pressure of approximately 2 0 bar Remove air in the c...

Page 30: ...onnected securely Make sure all covers are closed before starting up the unit NOTICE Do NOT operate the unit until the refrigerant piping is complete Running the unit before the piping is ready will break the compressor NOTICE If the power supply has a missing or wrong N phase equipment will break down NOTICE Do NOT install a phase advancing capacitor because this unit is equipped with an inverter...

Page 31: ... with the unit located at the inside of the switch box cover 6 9 4 About the electrical wiring NOTICE Be sure to keep the power line and transmission line apart from each other Transmission wiring and power supply wiring may cross but may not run parallel Transmission wiring and power supply wiring may not touch internal piping except the inverter PCB cooling pipe in order to avoid wire damage due...

Page 32: ...lf must be as such that the current carrying wires are tautened before the earth wire is in case the power supply is pulled loose from the stress relief NOTICE When routing earth wires secure clearance of 50 mm or more away from compressor lead wires Failure to observe this instruction properly may adversely affect correct operation of other units connected to the same earth SERHQ020 a g c d b i g...

Page 33: ...minal block Otherwise the entire system may break down The wiring from the indoor units must be connected to the F1 F2 In Out terminals on the outdoor unit PCB NOTICE Take care of the polarity of the transmission wiring The outdoor unit PC board A1P is factory set to Sequential start available 6 9 7 To connect the power supply and transmission cables 1 Open the electrical component box cover 2 Usi...

Page 34: ...front part of the user interface 2 Fasten the user interface on a flat surface NOTICE Be careful NOT to distort the shape of the lower part of the user interface by overtightening the mounting screws 3 Connect the terminals of the user interface and the terminals inside the unit P1 to P1 P2 to P2 as shown in the figure P1 P2 a a f b c d e P1 P2 P2 P1 P2 P1 a Unit b Rear part of the user interface ...

Page 35: ...ld settings are used for special operation e g 1 time operation recovery vacuuming setting manual adding refrigerant setting etc In such a case it is required to abort the special operation before normal operation can restart It will be indicated in below explanations To continue the configuration of the system it is required to give some input to the PCB of the unit This chapter will describe how...

Page 36: ... s B S 1 B S 1 B S 1 a c b a Default situation H1P OFF b Mode 1 H1P flashing c Mode 2 H1P ON BS1 Press BS1 BS1 5 s Press BS1 for at least 5 s INFORMATION If you get confused in the middle of the process press BS1 to return to the default situation 7 2 5 To use mode 1 Mode 1 is used to monitor the status of the unit What How Accessing monitoring mode 1 Once mode 1 is selected push BS1 one time you ...

Page 37: ...the BS2 button to make field settings to configure the system The LEDs give a binary representation of the setting value number Setting binary Value Description Fan high static pressure setting In order to increase the static pressure the outdoor unit fan is delivering this setting should be activated default Deactivated Activated Automatic low noise setting and level during night time By changing...

Page 38: ...iate field setting first code 3 Press to select the appropriate field setting second code 4 Press and to change the value of the selected field setting 5 Press to save the new value 6 Repeat the previous steps to change other field settings as required 7 When finished press to exit the field setting mode INFORMATION Changes made to a specific field setting are only stored when is pressed Navigatin...

Page 39: ...The last programmed command 16 00 overruled the previous programmed command 13 00 and will remain active until the next programmed command 19 00 occurs So in order to know the actual setting you should consult the last programmed command this may date from the day before The controller is switched off operation LED off but the schedule timer icon remains on Press The schedule timer for space heati...

Page 40: ...temperature setpoint B Room setback temperature 5 03 t Time T Temperature Setback configured for leaving water temperature control 2 01 2 02 B A T t 45 C 40 C 5 C 5 02 A Normal leaving water temperature setpoint B Leaving water setback temperature 5 02 t Time T Temperature See field setting 5 in this chapter for temperature setpoints 2 00 Status 2 00 Description 0 The setback function is disabled ...

Page 41: ...stat input 1 heating operation ON 1 OFF 0 External room thermostat input 2 cooling operation ON 1 OFF 0 2 External room thermostat input 1 operation ON 1 OFF 0 External room thermostat input 2 cooling 1 heating 0 7 Option setup 7 00 Forced pump operation 7 00 Description 0 The pump performs intermittent sampling during thermo off conditions This setting is often used when the unit is controlled by...

Page 42: ...00 This setting is not applicable E 01 This setting is not applicable E 02 This setting is not applicable E 03 This setting is not applicable E 04 Pump only operation air purge function When installing and commissioning the unit it is very important to remove all air from the water circuit This field setting operates the pump to improve air removal from the unit without actually operating the unit...

Page 43: ...int It is possible that the leaving water temperature becomes lower than the setpoint if the unit is controlled by room temperature 8 Commissioning 8 1 Overview Commissioning This chapter describes what you have to do and know to commission the system after it is configured Typical workflow Commissioning typically consists of the following stages 1 Checking the Checklist before commissioning the o...

Page 44: ...ont panel according to EN60335 2 40 and keep record of the contents of the field setting s Switches Make sure that switches are set according to your application needs before turning the power supply on Power supply wiring and transmission wiring Use a designated power supply and transmission wiring and make sure that it has been carried out according to the instructions described in this manual a...

Page 45: ...n the user interface during its initialization which may take up to 30 seconds During this process the user interface cannot be operated 8 5 Final check Before switching on the unit read the following recommendations When the complete installation and all necessary settings have been carried out be sure that all panels of the unit are closed If this is not the case inserting your hand through the ...

Page 46: ...ing sound or the magnetic sound of a solenoid valve may become loud and the LED display may change but these are not malfunctions It is not possible to stop operation using a user interface during the test operation To abort the operation press BS3 and the unit will stop after 30 seconds 5 Close the front panel in order not to let it be the cause of misjudgement 6 If the test operation has complet...

Page 47: ...t box are hot Make sure you do NOT touch a conductive section Do NOT rinse the unit This may cause electric shocks or fire 9 2 1 To prevent electrical hazards When performing service to inverter equipment 1 Do NOT open the electrical component box cover for 10 minutes after the power supply is turned off 2 Measure the voltage between terminals on the terminal block for power supply with a tester a...

Page 48: ...ef valve hose if present Water pressure relief valve Electrical component box Water pressure Water filter pH value Pressure relief valve hose Check whether the pressure relief valve hose is positioned appropriately to drain the water Water pressure relief valve Turn the red knob on the valve counter clockwise and check if it operates correctly If you do not hear a clacking sound contact your local...

Page 49: ...ode Solution recharge operation Close valve A immediately and press the TEST OPERATION button once The operation will restart from the charging mode judgement onwards charging aborted Close valve A immediately Check following items Is the gas side stop valve opened correctly Is the valve of the refrigerant tank open Are the air inlet and outlet of the indoor unit obstructed Correct the abnormality...

Page 50: ...obstacles the wall heights have no influence on any indicated service space dimensions b a c d A C B D a e b d e A C B D 2 1 c a c e b d f A C B D 3 a c e b b d A C B D 4 Layout A B C D A B Possibility 1 Possibility 2 1 a 10 mm b 300 mm c 10 mm d 500 mm a 50 mm b 100 mm c 50 mm d 500 mm a 200 mm b 300 mm 2 a 10 mm b 300 mm c 10 mm d 500 mm e 20 mm a 50 mm b 100 mm c 50 mm d 500 mm e 100 mm a 200 m...

Page 51: ...data Installer and user reference guide 51 SERHQ020 032BAW1 SEHVX20 64BAW Split packaged air cooled water chiller 4P508020 1A 2018 01 INFORMATION Further specifications can be found in the technical engineering data ...

Page 52: ... h i a a j j k k m l l m m o n n d d d d p d d d 20 kW a b b c d f e g h i a a a l o l l k k m m m m d d n n n d d d d d j j j d p d 32 kW a Check valve b Electronic expansion valve c Pressure regulating valve d Filter e Fan f Heat exchanger g Accumulator h 4 way valve i High pressure sensor j High pressure switch k Solenoid valve l Compressor m Capillary tube n Oil separator o Low pressure sensor...

Page 53: ...T A B h g k C D a Air purge valve b Temperature sensors R11T R12T R13T R14T c Expansion vessel 12 l d Shut off valve field installed e Water inlet connection f Water outlet connection g Drain port h Water filter i Pressure gauge j Flow switch k Pump l Safety valve m Check valve n Electronic expansion valve o Heat exchanger p Filter A Water side B Refrigerant side C Refrigerant flow in cooling mode...

Page 54: ...tic contactor M1C K2M K3M Magnetic contactor M2C M3C K1R K2R Magnetic relay K2M K3M K3R K5R Magnetic relay Y1S Y3S K6R K9R Magnetic relay E1HC E3HC L1R Reactor M1C M3C Motor compressor M1F M2F Motor fan PS Switching power supply A1P A3P Q1DI Earth leakage circuit breaker field supply Q1RP Phase reversal detection circuit R1T Thermistor fin A2P R1T Thermistor air A1P R2T Thermistor suction R4T Ther...

Page 55: ...e circuit 2 K1P Pump contactor K1S Pump overcurrent relay K R A3P PCB relay M1P Pump Q1T Thermostat for expansion vessel heater PS A P Switching power supply Q1DI Earth leakage circuit breaker field supply R1T Thermistor air fin R11T Leaving water thermistor circuit 1 R12T Returning water thermistor circuit 1 R13T Refrigerant liquid thermistor circuit 1 R14T Refrigerant gas thermistor circuit 1 R2...

Page 56: ...er reference guide 56 SERHQ020 032BAW1 SEHVX20 64BAW Split packaged air cooled water chiller 4P508020 1A 2018 01 12 8 Technical specifications Outdoor unit INFORMATION For technical and electrical details see technical engineering data ...

Page 57: ...ue 70 01 Not applicable Do not change the default value 10 02 Leaving water setback temperature 5 0 10 1 C 03 Room setback temperature 18 17 23 1 C 04 Not applicable Do not change the default value 1 6 Option setup 01 Optional room thermostat installed 0 0 2 7 Option setup 00 Forced pump operation 1 ON 0 1 8 Option setup 00 User interface temperature control 0 OFF 0 1 01 Not applicable Do not chan...

Page 58: ...icable Do not change the default value 40 E Service mode 00 Not applicable Do not change the default value 0 01 Not applicable Do not change the default value 0 02 Not applicable Do not change the default value 0 03 Not applicable Do not change the default value 1 04 Pump only operation Air purge 0 0 25 1 F Settings are not applicable 00 Allowable overshoot value for return water 5 0 15 1 C 01 Not...

Page 59: ...mand setting via external control adapter NO YES 18 High static pressure setting OFF ON 22 Automatic night time low noise setting OFF Level 1 outdoor fan with step 6 or lower Level 2 outdoor fan with step 5 or lower Level 3 outdoor fan with step 4 or lower 25 Low noise setting via external control adapter Level 1 outdoor fan with step 6 or lower Level 2 outdoor fan with step 5 or lower Level 3 out...

Page 60: ...d any quality deterioration do not use the unit for cooling precision instruments or works of art NOTICE For future modifications or expansions of your system A full overview of allowable combinations for future system extensions is available in technical engineering data and should be consulted Contact your installer to receive more information and professional advice 13 1 System layout RC RT1 M1...

Page 61: ...nal electronic parts WARNING This unit contains electrical and hot parts WARNING Before operating the unit be sure the installation has been carried out correctly by an installer NOTICE Never inspect or service the unit by yourself Ask a qualified service person to perform this work WARNING Never use a flammable spray such as hair spray lacquer or paint near the unit It may cause a fire WARNING Ne...

Page 62: ...not place the user interface in a place exposed to direct sunlight The LCD display may get discoloured or fail to display the data NOTICE Do not place items which might be damaged by moisture under the indoor unit Condensation may form if the humidity is above 80 if the drain outlet is blocked or the filter is polluted NOTICE Arrange the drain hose to ensure smooth drainage Incomplete drainage may...

Page 63: ... the system 16 3 1 About the clock INFORMATION The clock must be set manually Adjust the setting when switching from summertime to wintertime and vice versa The clock cannot be adjusted if the controller is set to permission level 2 or 3 see field setting 0 00 in 7 2 9 Field settings on the user interface on page 38 A power failure of more than 2 hours will reset the clock and the day of the week ...

Page 64: ... is then operated in the leaving water control mode and is not functioning as a room thermostat The remote controller ON OFF status always has priority over the external room thermostat INFORMATION Setback operation and weather dependent setpoint are not available in the cooling mode 16 3 4 Space heating operation Space heating is available for heat pump units only Space heating can be controlled ...

Page 65: ...fferent levels of quiet mode operation The desired quiet mode is set through a field setting 1 Press to activate quiet mode operation Result appears on the display If the controller is set to permission level 2 or 3 see 7 2 Making field settings on page 35 the button cannot be used 2 Press again to deactivate quiet mode operation Result disappears from the display The actual temperatures can be di...

Page 66: ... C 1 OFF ON ON 6 30 0 30 B t 6 30 9 00 16 00 23 00 19 C 19 C 22 C 21 C 42 C 42 C 45 C 44 C 19 C 19 C 22 C 21 C 42 C 42 C 45 C 44 C 3 OFF ON ON 18 C 40 C 40 C 18 C 1 Schedule timer 2 Setback function 3 Both setback function and schedule timer are enabled A Setback function B ON OFF instruction t Time T Temperature setpoint Room temperature Leaving water temperature Space heating based on temperatur...

Page 67: ...linking 4 Consult the action s using and 5 Hold down for 5 seconds to program the detailed actions Result The first programmed action appears 6 Select the action number you would like to program or to modify using 7 Set the correct action time using and 8 Set the leaving water temperature using and 9 Set the room temperature using and 10 Select using to switch cooling and the remote controller off...

Page 68: ...sult If is pressed when action number 3 is displayed actions 1 2 and 3 are stored but action 4 is deleted You automatically return to step 6 Press several times to return to previous steps in this procedure and finally return to normal operation 15 You automatically return to step 6 start again to program the following day To program quiet mode INFORMATION Press to return to previous steps in the ...

Page 69: ...simultaneously for 5 seconds 6 After 5 seconds the display will show the next day e g if was selected first This indicates that the day has been copied 7 Press to return to step 2 To delete a mode 1 Press Result The actual mode is blinking 2 Select the mode you want to delete using and Result The selected mode is blinking 3 Press and simultaneously for 5 seconds to delete the selected mode To dele...

Page 70: ...ible Contact your dealer for more information When asking your dealer for an intervention always state The complete model name of the unit The manufacturing number stated on the nameplate of the unit The installation date The symptoms or malfunction and details of the defect 17 2 3 Recommended maintenance and inspection cycles Be aware that the mentioned maintenance and replacement cycles do not r...

Page 71: ... 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 17 Maintenance and service on page 69 Malfunction Measure The system operates but cooling or heating is insufficient Check if air inlet or outlet of outdoor or indoor unit is not blocked by obstacles Remove any obstac...

Page 72: ...ropean national and local directives laws regulations and or codes that are relevant and applicable for a certain product or domain Service company Qualified company which can perform or coordinate the required service to the product Installation manual Instruction manual specified for a certain product or application explaining how to install configure and maintain it Operation manual Instruction...

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