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Waterstage / Maintenance Manual / 2105 - EN

Keep their shape better.

There is a possibility of catching fire to oil when removing by the welding without cutting it.

Caution

Cut the injection pipe.

Range

Discharge side

Range

Cut the Suction pipe in this range.

Remove the Compressor.

Suction side

Cut the Discharge pipe in this range.

Remove the COMP BOLTs.
(4 places)

Procedure for compressor installation.

Reverse procedure to removing the compressor.

Precautions for installation of Compressor.

(1) When brazing, do not apply the ﬂ ame to the terminal.
(2) When brazing, be sure to replace the air in the pipe with nitrogen gas to prevent forming oxidization scale.

Содержание Waterstage WOYK150LJL

Страница 1: ...NT Air to Water Heat Pump Split single service and integrated DHW type For professionals To be kept by the user for future reference EN Outdoor unit WOYG160LJL WOYK150LJL WOYK170LJL Hydraulic unit WSYG160DJ6 WSYK170DJ9 WGYG160DJ6 WGYK170DJ9 ...

Страница 2: ...eration Circuit Leak Test 47 Troubleshooting 47 Control Settings 48 General 48 Setting parameters 48 Recommended settings for the parameters depending on the installation s emitters 48 Function Table 49 Adjustment Function Details 65 Date and Time Functions 65 User Interface Functions 65 Time Program Functions heating circuit 1 2 DHW cooling 66 Heating Circuit 1 2 Functions 67 Cooling Circuit 1 Fu...

Страница 3: ...otor removal 107 Top panel removal 108 Reactor removal 109 Pipe cover front removal 110 Right panel removal 110 Compressor removal 111 Precautions for exchange of refrigerant cycle parts 116 3 phase type 118 Appearance 118 Service panel removal 118 Main PCB removal 119 Inverter PCB and Filter PCB removal 120 Pressure sensor solenoid coil removal 123 EEV coil removal 126 Thermistor removal 126 Fan ...

Страница 4: ...temperature is less than the setting on 2884 or 3700 2 from the beginning Sensor and Input Test Mode LINE SENSOR INPUT OUTPUT WATERSTAGE 7700 QX Relay test 7710 UX1 Output test 7712 UX1 PWM Signal 7722 DO2 Cooling mode 7723 D3 Heat pump 7724 UX3 Output test Inverter command 7725 UX3 Voltage signal Ux3 7820 BX1 Sensor temp HP ﬂow temperature 7821 BX2 Sensor temp HP return temperature 7822 BX3 Senso...

Страница 5: ...sor X84 No No Yes 30 Flow sensor mixing circuit X153 No No Yes 33 Flow sensor HP X70 No No Yes 44 Return sensor HP X70 No No Yes 50 DHW sensor 1 X84 No No Yes 60 Room sensor 1 X86 No No Yes 65 Room sensor 2 X150 No No Yes 83 BSB Short circuit No No Yes 105 Maintenance message No No Yes 121 Flow temp mixing circuit too low No No Yes 122 Flow temp direct circuit too low No No Yes 127 Legionella temp...

Страница 6: ...s Compressor thermistor error 73 7 Flashes 3 Flashes Heat exchange thermistor outlet intermediate error 74 7 Flashes 4 Flashes Outdoor thermistor error 77 7 Flashs 7 Flashs Outdoor unit heat sink temp thermistor error 78 7 Flashes 8 Flashes Expansion valve thermistor error 84 8 Flashes 4 Flashes Current sensor error 86 8 Flashes 6 Flashes Pressure sensor error Pressure switch error 94 9 Flashes 4 ...

Страница 7: ...m thermostat T55 Room thermostat radio T58 Outdoor sensor Room control unit T75 Room control unit radio T78 External component contact faults load shedder power meter or or or External component contact faults power limiter electricity meter Outside sensor Power limitation or EDR Energy Demand Reduction Tariﬀs peak times oﬀ peak times day night External fault If the control device does not provide...

Страница 8: ... t if a fault has occurred on the outdoor unit as indicated by the Hydraulic Unit you must remove the front right hand facing from the outdoor unit Faults are coded by LED ﬂashes Error messages are listed in the table below On the outdoor unit When an error occurs The diode ERROR 2 blinks Press once on the switch ENTER SW109 The ERROR 2 diode blinks several times depending on the error s type fig ...

Страница 9: ...perature error permanent stoppage 12 Flashes Compressor temperature error permanent stoppage 13 Flashes Over current error permanent stoppage 14 Flashes Detection of compressor position error permanent stoppage 15 Flashes Compressor start up error permanent stoppage 16 Flashes Fan motor 1 error permanent stoppage 17 Flashes Fan motor 2 error permanent stoppage 18 Flashes Inverter error 20 Flashes ...

Страница 10: ...ween terminals N and L on the outdoor unit terminal block OK 4 Check the serial signal Check the voltage between terminals 2 and 3 of the outdoor terminal block The voltage must fluctuate between AC 70 V and AC 130 V If it doesn t replace Main PCB OK 1 2 Check for external causes Check the system s overall isolation Check for any equipment generating electromagnetic waves which interfere with the ...

Страница 11: ...4 Check the serial signal Check the voltage between terminals 2 and 3 of the outdoor terminal block The voltage must fluctuate between AC 70 V and AC 130 V If it doesn t replace Interface PCB OK 1 2 Check for external causes Check the system s overall isolation Check for any equipment generating electromagnetic waves which interfere with the communication between the hydraulic unit and the outdoor...

Страница 12: ...nterface PCB and Heat pump regulator PCB See if the connector has been disconnected See if the connection is correct Check for any damage on the sensor cable After solving the misconnection problem switch the heat pump back on 2 Check resistance value 3 pin of CN22 M 10 OK 3 Replace interface PCB If check point 1 and 2 do not improve the symptom replace Interface PCB OK Waterstage Maintenance Manu...

Страница 13: ...sor cable After solving the misconnection problem switch the heat pump back on 2 Remove the sensor and check its resistance value Check the resistance value Temperature C 0 5 10 15 20 25 30 35 40 45 50 Resistance k 176 134 103 80 3 62 9 49 7 39 6 31 7 25 6 20 8 17 1 If the thermistor is faulty replace it OK 3 Check the electronic board voltage Make sure circuit diagram of hydraulic unit and check ...

Страница 14: ...e sensor and check its resistance value Check the resistance value Temperature C 0 5 10 15 20 30 40 50 Resistance k 168 130 101 79 63 40 26 3 17 8 Temperature C 60 70 80 90 100 120 Resistance k 12 3 8 7 6 3 4 6 3 4 2 If the thermistor is faulty replace it OK 3 Check the electronic board voltage Make sure circuit diagram of outdoor unit and check terminal voltage at thermistor DC5 0V If there is no...

Страница 15: ...ch the heat pump back on 2 Remove the sensor and check its resistance value Check the resistancer value Temperature C 10 5 0 10 15 20 25 30 Resistance k 27 5 20 9 16 1 12 4 9 73 7 67 6 1 3 95 If the thermistor is faulty replace it 3 Check the electronic board voltage Make sure circuit diagram of outdoor unit and check terminal voltage at thermistor DC5 0V If there is no voltage replace Main PCB OK...

Страница 16: ...ack on 2 Remove the sensor and check its resistance value Check the resistance value Temperature C 20 10 5 0 5 10 15 20 30 40 50 60 70 Resistance k 115 62 3 46 6 35 2 26 9 20 7 16 1 12 6 7 97 5 18 3 45 2 36 1 65 If the thermistor is faulty replace it OK 3 Check the electronic board voltage Make sure circuit diagram of outdoor unit and check terminal voltage at thermistor DC5 0V If there is no volt...

Страница 17: ...nsor and check its resistance value Check the resistance value Temperature C 0 5 10 15 20 30 40 50 Resistance k 15 8 12 2 9 5 7 5 5 9 3 78 2 50 1 69 Temperature C 60 70 80 90 100 120 Resistance k 1 17 0 83 0 6 0 44 0 33 0 19 If the thermistor is faulty replace it OK 3 Check the electronic board voltage Make sure circuit diagram of outdoor unit and check terminal voltage at thermistor DC5 0V If the...

Страница 18: ...e sensor and check its resistance value Check the resistance value Temperature C 0 5 10 15 20 30 40 50 Resistance k 168 130 101 79 63 40 26 3 17 8 Temperature C 60 70 80 90 100 120 Resistance k 12 3 8 7 6 3 4 6 3 4 2 If the thermistor is faulty replace it OK 3 Check the electronic board voltage Make sure circuit diagram of outdoor unit and check terminal voltage at thermistor DC5 0V If there is no...

Страница 19: ... switch the heat pump back on 2 Remove the sensor and check its resistance value Check the resistance value Temperature C 10 5 0 10 15 20 25 30 Resistance k 27 5 20 9 16 1 12 4 9 73 7 67 6 10 3 95 If the thermistor is faulty replace it 3 Check the electronic board voltage Make sure circuit diagram of outdoor unit and check terminal voltage at thermistor DC5 0V If there is no voltage replace Main P...

Страница 20: ...the sensor and check its resistance value Check the resistance value Temperature C 0 5 10 15 20 30 40 50 Resistance k 168 130 101 79 63 40 26 3 17 8 Temperature C 60 70 80 90 100 120 Resistance k 12 3 8 7 6 3 4 6 3 4 2 If the thermistor is faulty replace it OK 3 Check the electronic board voltage Make sure circuit diagram of outdoor unit and check terminal voltage at thermistor DC5 0V If there is ...

Страница 21: ...connection Check if cable is open Upon correcting the removed connector or mis wiring reset the power OK 3 KHFN 2XWGRRU DQ Check Outdoor Fan Motor Refer to Clear 18 If the Fan Motor is failure replace it OK 4 Check Compressor Refer to Service parts information 2 Inverter compressor If it is abnormal replace compressor OK 2 Check Outdoor Heat Exchanger Is there any obstructing the air flow route Is...

Страница 22: ...rvice parts information 2 Inverter compressor If it is abnormal replace compressor 3 Replace the electronic board If steps 1 and 2 do not solve the problem replace Inverter PCB OK 1 KHFN FRQQHFWLRQV FRQGLWLRQ LQ FRQWURO XQLW Check if the terminal connection is loose Check if connector is removed Check if connector is erroneous connection Check if cable is open Upon correcting the removed connector...

Страница 23: ...ings are faulty replace them 2 Check the ambient temperature around the motor Check excessively high temperature around the fan Wait until the temperature comes down again and switch the fan back on 3 Check the main board output voltage On the outdoor unit check the output voltage DC of the following connectors Terminals Voltage 1 red 3 black 300 390V 4 white 3 black 15 2V If the voltage is incorr...

Страница 24: ... Check connections in control unit Check if the terminal connection is loose Check if connector is removed Check if connector is erroneous connection Check if cable is open Upon correcting the removed connector or mis wiring reset the power 2 Replace Main PCB If Check Point 1 does not improve the symptom replace Main PCB OK Waterstage Maintenance Manual 2105 EN ...

Страница 25: ...ions in control unit Check if the terminal connection is loose Check if connector is removed Check if connector is erroneous connection Check if cable is open Upon correcting the removed connector or mis wiring reset the power 2 Replace Active Filter Module and Main PCB If Check Point 1 does not improve the symptom replace Main PCB and Active Filter Module and execute the checkoperation again OK W...

Страница 26: ...on 2 Check EEV and Strainer Are EEV and Strainer open If EEV or Strainer is defective replace it OK Heating mode 3 Check if gas leak or less gas Measure gas pressure if there is a leak correct it If recharging refrigerant make sure to perform vacuuming and recharge the specified amount OK OK 4 Check Discharge Pipe Thermistor Is it on the holder Is there a cable pinched Check characteristics of the...

Страница 27: ...ce Main PCB OK 3 Check output voltage of Pressure Sensor Check voltage of Main PCB Measure at Main PCB side connector 2 pin White 3 pIn Black Voltage is refer to the following graph If the voltage is not correct replace Presure Sensor OK 1 Check connection of the Pressure Sensor Check if the terminal connection is loose Check if connector is removed Check if connector is erroneous connection Check...

Страница 28: ...er open If EEV or Strainer is defective replace it OK Heating mode 3 Check if gas leak or less gas Measure gas pressure if there is a leak correct it If recharging refrigerant make sure to perform vacuuming and recharge the specified amount OK OK 4 Check compressor temperature Thermistor Is it on the holder Is there a cable pinched Check characteristics of thermistor Refer to Clear 11 If defective...

Страница 29: ... PCB OK 3 Check if gas leak or less gas Measure Gas pressure if there is a leak correct it If recharging refrigerant make sure to perform vacuuming and recharge the specified amount OK 1 Check connection of the Pressure Sensor Check if the terminal connection is loose Check if connector is removed Check if connector is erroneous connection Check if cable is open Upon correcting the removed connect...

Страница 30: ...ain PCB side connector 1 pin brown 2 pin Red DC5V 5 If the voltage is not correct replace Main PCB OK 3 Replace PFC PCB If Check Point 1 2 do not improve the symptom replace PFC PCB OK 1 Check connections of between Main PCB and PFC PCB Check if the terminal connection is loose Check if connector is removed Check if connector is erroneous connection Check if cable is open Upon correcting the remov...

Страница 31: ...lure Check 1 KHFN FRQQHFWLRQV FRQGLWLRQ LQ FRQWURO XQLW Check if the terminal connection is loose Check if connector is removed Check if connector is erroneous connection Check if cable is open Upon correcting the removed connector or mis wiring reset the power OK 2 Replace the electronic board If steps 1 does not solve the problem replace Main PCB Waterstage Maintenance Manual 2105 EN ...

Страница 32: ...n time 1min Is the error still displayed YES NO 1 2 Check for external causes Check for any equipment generating harmonic waves which interfere with the communication between the Main PCB and the Interface PCB Neon light bulb or any electric equipment which causes harmonic waves 2 Check the connections Check the connection between the Main PCB and the Interface PCB If there is an abnormal conditio...

Страница 33: ...y current leaks Check for any equipment generating electromagnetic waves which interfere with the communication between the Hydraulic Unit and the outdoor unit 3 Check the electrical components If all of these checks are unsuccessful replace Interface PCB OK OK OK Check that a voltage between AC 198 and AC 264 V exists between terminals 1 and 2 on the Hydraulic Unit terminal block NO Check Interfa...

Страница 34: ...gnetic waves which interfere with the communication between the Hydraulic Unit and the outdoor unit OK OK 1 Check the installation Is the circuit breaker cut off Check the wiring NO If all of these checks are unsuccessful replace Main PCB OK Check that a voltage between AC 198 and AC 264 V exists between terminals 1 and 2 on the Hydraulic Unit terminal block Check Main PCB power supply for o eithe...

Страница 35: ...exchanger clogged Are the valves open 4 Check the configuration of the room Is the heat pump power suited to the need 5 Inspect the Hydraulic Unit and outdoor unit installation Check the refrigeration connections length diameter 6 Inspect the refrigeration circuit See if the dehydrator is clogged there should be no temperature variation between the dehydrator input and output in normal operating c...

Страница 36: ...r unit Is the unit stable Is the protection screen properly mounted Is the propeller broken or distorted Has the propeller screw been lost Is any object blocking the propeller rotation OK Check for any vibration noise caused by a bolt Check for any sound of contact with a pipe OK Is the compressor locked OK Waterstage Maintenance Manual 2105 EN ...

Страница 37: ...k Temperature C 0 5 10 15 20 30 40 50 60 Resistance value kΩ 15 8 12 2 9 5 7 5 5 9 3 78 2 50 1 69 1 17 Temperature C 70 80 90 100 110 120 Resistance value kΩ 0 83 0 60 0 44 0 33 0 25 0 19 Heat Exchanger Condensing sensor Temperature C 0 5 10 15 20 25 30 35 40 45 50 Resistance value kΩ 176 134 103 80 3 62 9 49 7 39 6 31 7 25 6 20 8 17 1 Outdoor sensor Temperature C 20 15 10 5 0 5 10 15 20 Resistanc...

Страница 38: ...Low pressure is too low Check if refrigerant is leakin Recharge refrigerant Check if stainer is clogged Parts information 3 Check inverter PCB connection of compressor and winding resistance refer to the next page If there is no failure the defected of compressor is considered Compression part broken or valve defective Replace compressor Check if vibration noise by loose bolt or contact noise of p...

Страница 39: ...f connector Loose connector or open cable Check point 2 Check coil of EEV Remove connector check each winding resistance of coil Read wire Resistance value White Red Yellow Red Orange Red Blue Red 46 4 at 20 C If resistance value is abnormal replace EEV Check point 3 Check voltage from main PCB Remove connector and check voltage DC12V If it does not appear replace Main PCB Check point 4 Check nois...

Страница 40: ... Check whether the liquid injection is active before executing check point 5 for EEV INJ Check point 6 Check stainer Stainer normally does not have temperature difference between inlet and outlet as shown in 1 but if there is a difference as shown in 2 there is a possibility of inside clogged In this case replace stainer CLOSE Example Hot gas Pipe In HI TEMP Pipe Out Normal TEMP OPEN Example Hot g...

Страница 41: ...ctivity check if valve is operating normally When valve opens ther is no temperature difference between inlet and outlet If the valve closes by removing the connector of the valve which does not close it is considered to be Main PCB failure Replace Main PCB If it does not closeby removing connector there is a possibility of 1 clogging by dirt or 2 deformation by the heat at the time of solenoid va...

Страница 42: ...um flow rate l h 2772 2598 2946 Minimum flow rate l h 600 600 600 Refrigerant circ max pressure MPaG 4 15 Min delta T C 4 Max delta T C 8 Outdoor unit Noise level 1 dBA 67 67 67 Outdoor unit Noise level 5 dBA 45 45 45 Outdoor unit air flow rate m3 h 6250 Acoustic pressure level reading at 1m in open ﬁeld on a reﬂecting plane Acoustic pressure level reading at 5m in open ﬁeld on a reﬂecting plane W...

Страница 43: ...uits to determine which heating circuit is perforated Pipe leak Pipe is faulty Service station Leak in heating circuit Floor again Installer 4 Clogged heating circuit crushed pipe Very high diﬀerence between ﬂoor ﬂow return temp On collector check heating circuit ﬂow return temps infrared thermometer Clear with test pump Service station If no clogged heating circuit check for crushing with infrare...

Страница 44: ...ove the unit cover and then remove the Inverter module cover Measure the voltage at the condenser terminals You should ﬁnd a value of 5 Vdc or less Inspection of the Power Transistor Module Main board Disconnect the compressor relay and the condenser connection Measure the resistance value at the points shown on the illustration and then compare the values observed with those in the table Multimet...

Страница 45: ...t sending data to outdoor unit Compressor running Operating pressure OK 4 way valve switching Expansion correct Inspect refrigeration lines clogging Hydraulic unit electronic system faulty Inspect PCB Charge to balance Problem solved Servicing complete Valve coil faulty Change expansion valve Change coil Change 4 way valve after testing No Yes No Yes Yes No No No No Yes Yes No Yes Yes Waterstage M...

Страница 46: ...orm the charging with an electronic scale Outdoor unit defrosting is controlled by the exchanger sensor and the controller board If the defrost sensor is not iced up while the rest of the exchanger is then Move the sensor between the exchanger blades to a place where the exchanger is iced up If all these points have been checked replace the outdoor controller board Note Outdoor unit defrosting is ...

Страница 47: ...ual leak testing of installations with a refrigerant charge higher than 2kg Leak testing is to be performed with an approved detector that has been appropriately calibrated Troubleshooting The heat pump is not operating at all no illuminated indicator Are the power supply voltage and frequency normal Is the connection to mains correct Have all the connectors been properly inserted Are the fuses on...

Страница 48: ... the basic display OK Press and release End user OK OK OK Time of day and date Hours minutes 1 Time 1 24 h User interface Day Month 2 Minutes 0 60 min Heating circuit 1 timer programme Year 3 Press for 3 seconds End user Start up Specialist OEM Time of day and date Hours minutes 1 User interface Day Month 2 Heating circuit 1 timer programme Year 3 End date of summer time 4 01 01 31 12 End date of ...

Страница 49: ...With confirmation 29 I Temperature units Pressure units C F bar psi C bar 44 I Operation HC2 Jointly with HC1 Independently Jointly with HC1 46 I Operation HC3 P Jointly with HC1 Independently Jointly with HC1 70 S Display software version Time program heating cooling circuit 1 500 U Pre selection Day Week Mon Sun Mon Fri Sat Sun Monday Tuesday Mon Sun 501 U 1st phase On start 00 00 10 min 6 00 50...

Страница 50: ...3 U 2nd phase On start 00 00 10 min 14 30 564 U 2nd phase Oﬀ end 00 00 10 min 17 00 565 U 3rd phase On start 00 00 10 min 566 U 3rd phase Oﬀ end 00 00 10 min 576 U Default values No Yes No Yes OK The default values memorised in the regulator replace and cancel the customised heating programs Your customised settings are therefore lost Holidays heating circuit 1 For the Holiday program is active th...

Страница 51: ...s not a safety function as required by ground heating 750 S Room inﬂuence 1 100 1 50 If the installation is ﬁtted with a room thermostat This function enables you to choose the ambient temperature s inﬂuence on the setting If no value is entered the setting is made based on the temperature control If the parameter is set at 100 the setting is only based on the ambient temperature 760 S Room temper...

Страница 52: ...ally if line 850 manual 0 95 C 1 C 25 C This function enables you to set the custom concrete slab drying temperature This temperature remains ﬁxed The concrete slab drying programme stops automatically after running for 25 days 856 I Floor curing day current 0 32 857 I Floor curing day completed 0 32 900 S Operating mode changeover None Protection mode Reduced Comfort Automatic 1 Reduced Operating...

Страница 53: ...tches oﬀ the heating as an economy measure During summer mode the display shows Eco This function is only active in automatic mode 1040 I Flow temp setpoint min 8 70 C 1 C 17 C with dynamic radiator adjust from 30 to 35 C 1041 I Flow temp setpoint max 8 70 C 1 C 60 C Floor heating system 50 C Radiators 65 C Important Note Maximum temperature limitation is not a safety function as required by groun...

Страница 54: ...1 U Operating mode Protection Automatic Reduced Comfort Protection 1202 U Comfort cooling setpoint 17 40 C 0 5 C 24 C 1203 U Reduced setpoint 5 40 C 26 C 1208 I Flow temp setp at OT 25 C 6 35 C 0 5 C 20 C 1209 I Flow temp setp at OT 35 C 6 35 C 0 5 C 16 C 1212 I Cooling limit at OT 8 35 C 0 5 C 24 C 1213 S Lock time at end of heating cooling 8 100 1 h 24 h 1218 S Summer comp start at OT 20 50 C 1 ...

Страница 55: ...ing is authorised to operate during the comfort period or oﬀ peak Connect the Power Provider contact to input EX2 In the case of a day night contract the electric back ups for the DHW tank are subject to the power supplier s tariﬀs Switching on the electric back up for the DHW tank is only authorised during oﬀ peak hours 1640 I Legionella function Oﬀ Periodically depending line setting 1641 Fixed ...

Страница 56: ... _ 2nd back up HP oﬀ _ Boiler ON Energy meter 3095 3110 Not used 3113 U Energy brought in Kwh Cumulation of total consumed electrical energy Electrical energy consumed Electrical energy absorbed by outdoor unit electric energy absorbed by the heating electrical backup and or DHW electrical backup if installed 3121 3123 Not used 3124 U Energy brought in heating 1 N 1 Kwh 3125 U Energy brought in DH...

Страница 57: ... 3184 3186 Not used 3187 U Energy brought in heating 10 N 10 Kwh 3188 U Energy brought in DHW 10 Kwh 3189 U Energy brought in cooling 10 Kwh 3190 S Reset ﬁxed day storage No Yes No Reset the historical counters 1 to 10 The general counter parameter 3113 is not reset 3197 S Compressor electrical power 0 1 60 0 1 See table below Set the parameter 3197 according to the outdoor unit Heat Pump Outdoor ...

Страница 58: ...re setting 1 2 3 9 1 1 This control enables you to choose one of the 4 pre selected installation conﬁgurations The hydraulic layouts for the various conﬁgurations are detailed in the section Installation Conﬁgurations Pre setting 1 1 heating circuit with or without electrical back up with DHW tank Pre setting 2 2 heating circuits with or without electrical back up with DHW tank Pre setting 3 Boile...

Страница 59: ...nitor 27 Flow temp setp incr hygro 30 Swi on command HP stage 1 35 Status info suppl source 36 Charg prio DHW sol fuel boil 43 Ventilation switch 1 44 Ventilation switch 2 45 Ventilation switch 3 50 Flow measurement Hz 51 Consumer request VK1 10V 52 Consumer request VK2 10V 54 Pressure measurement 10V 55 Humidity measurement 10V 56 Room temp 10V 59 Flow measurement 10V 60 Temp measurement 10V 61 A...

Страница 60: ...rror code 6818 S History 10 Time Date Error code Maintenance Special regime 7070 S HP interval 1 240 1 month 7071 S HP time since maint Reset no yes 0 240 1 month 0 7073 S Cur starts compr1 hrs run since the 6 last weeks Reset no yes 0 12 0 7141 U Emergency operation Oﬀ On Oﬀ Oﬀ Heat pump functions normally with boosters if necessary On Heat pump uses the electric boost system or the boiler connec...

Страница 61: ...e 1 15 Relay output QX23 module 1 16 Relay output QX21 module 2 17 Relay output QX22 module 2 18 Relay output QX23 module 2 19 Not used 20 Not used 21 Not used The display shows the Key symbol Pressing the Info button displays Error 368 Warning The component being tested is receiving electrical power throughout the test 7710 I Output UX1 test 0 100 1 7716 I Output UX2 test 0 100 1 7722 I Digital o...

Страница 62: ...ish Draw forced Draw free 8460 I Heat pump throughput 0 65535 l min Diagnostics consumers 8700 U Outdoor temperature 50 50 C 8701 U Outdoor temp min Reset no yes 50 50 C 50 C 8702 U Outdoor temp max Reset no yes 50 50 C 50 C 8703 I Outdoor temp attenuated Reset no yes 50 50 C This is the average of the outdoor temperature over a 24 hour period This value is used for automatic Summer Winter switcho...

Страница 63: ...999 8842 S Hours run electric DHW 0 2730 h 8843 S Start counter electric DHW 0 65535 8950 I Common ﬂow temperature 0 140 C Common ﬂow temperature setpoint 8957 I Common ﬂow setpoint Refrigerant 0 140 C 9005 I Water pressure 1 100 500 bar 9006 I Water pressure 2 100 500 bar 9009 I Water pressure 3 100 500 bar 9010 I Measurement room temp 1 0 50 C 9011 I Measurement room temp 2 0 50 C 9031 I Relay o...

Страница 64: ... ...

Страница 65: ...y the information display returns to the new standard display after a maximum of 8 minutes The last selected information value is shown in the new basic display Operation lock 26 If the operating lock is activated the following control elements can no longer be adjusted Heating circuit mode DHW mode room temp comfort setpoint knob occupancy key Programming lock 27 If the programming lock is activa...

Страница 66: ...changeover program considerably shorter Standard Program Line Nr Programming line 516 536 576 616 Default values No Yes All time programs can be reset to factory settings Each time program has its own command line for this reset action In this case individual settings will be lost Holidays Line Nr Programming line HC1 HC2 642 652 Period start Day Month 643 653 Period end Day Month 648 658 Operatin...

Страница 67: ...t 712 1012 Reduced setpoint 714 1014 Frost protection setpoint 716 1016 Comfort setpoint maximum Room Temperature Room temperature can be set according to diﬀerent setpoint values Depending on the selected mode these setpoints are activated and provide diﬀerent temperature levels in the rooms The ranges of conﬁgurable setpoints are deﬁned by their interdependencies as shown in the graph below Fros...

Страница 68: ...perature setpoint is automatically recomputed This will not modify the setting and amounts to automatically adapting the curve Heating curve displacement The curve shift oﬀset modiﬁes the ﬂow temperature in a general and even manner over the full range of outdoor temperature In other words the shift should be corrected when the room temperature is generally too high or too low Heating curve adapti...

Страница 69: ...ding on the outside temperature This function is used mainly during intermediate seasons spring and fall to react rapidly in case of ﬂuctuating temperatures Thus in the following example the changeover temperature will be 18 C computed as follows Comfort heating setpoint 710 22 C 24 Hour heating limit 732 3 C Changeover temperature 710 732 19 C Heating oﬀ Diﬀerential Fixed 1 C Changeover temperatu...

Страница 70: ...es proper adjustment of the heating curve as the control does not take the room temperature into account for this adjustment Control according to outdoor conditions with room inﬂuence The diﬀerence between the room temperature and the setpoint value is measured and taken into account for temperature control This enables taking into account possible heat inputs and ensures a more even room temperat...

Страница 71: ...plies of power e g low energy homes In that case when outdoor temperatures are low adjusting the temperature would be too long Increasing the reduced setpoint prevents excessive cooling of the rooms in order to shorten the temperature adjustment period when changing over to the comfort setpoint Comfort setpoint 710 Reduced setpoint 712 Begin increase 800 End increase 801 Averaged OT Mixing Valve C...

Страница 72: ...he installation has been adequately made hydraulics electricity settings Otherwise the ﬂoors to be dried may be damaged ThefunctionmaybeprematurelyinterruptedbysettingittoOﬀ The maximum ﬂow temperature limitation remains active Please comply with the standards and instructions of the manufacturer of the building A good performance of this function is only possible with an installation correctly im...

Страница 73: ... heating circuit frost protection is continuously activated protection mode and is not adjustable Heating circuit frost protection in heating mode If the ﬂow temperature is below 5 C the controller initiates the production of heat and starts the heating pumps regardless of the current heating mode If the ﬂow temperature rises again above 7 C the controller waits another 5 minutes and then stops th...

Страница 74: ...activated by the time program command line 907 the holiday program the occupancy key or according to the need Comfort cooling setpoint Line Nr Programming line 902 Comfort cooling setpoint In cooling mode the room temperature control follows the comfort setpoint adjusted under this setting The cooling comfort setpoint can be displayed with a knob on the room unit In summer the comfort setpoint is ...

Страница 75: ... temperature setpoint cooling can be viewed in the Info section Summer compensation start at OT Summer compensation starts to be active from the outdoor temperature deﬁned here If the outdoor temperature continues to rise the comfort setpoint will be gradually increased Summer compensation end at OT At this outdoor temperature the summer compensation reaches its peak eﬃciency 920 If the outdoor te...

Страница 76: ...he following requirements A room sensor must imperatively be connected The room inﬂuence parameter must be set between 1 and 99 The reference room where the room sensor is installed must not contain adjusted thermostatic valves Any thermostatic valves present in the rooms must be fully open Control according to room temperature only The ﬂow temperature is adjusted according to the room temperature...

Страница 77: ...ning If these settings are not chosen properly the heat pump may stop automatically due to the ﬂow temperature being too low A safety mechanism is triggered at 6 C to protect the exchanger from freezing Actuator running time For the 3 position servomotor used it is possible to adjust the travel time With a 2 position servomotor the adjusted travel time is inoperative Mixing valve in heating mode D...

Страница 78: ... the day we recommend adjusting the reduced temperature setpoint to 15 C Full charging will occur during the night at the nominal temperature Release Line Nr Programming line 1620 Release of DHW load 24h day Heating circ time pgm Time program 4 DHW Low tariﬀ Time pgm 4 DHW or Low tariﬀ 24h day Not recommended Regardless of the time programs the temperature of the domestic hot water is continuously...

Страница 79: ...Nr Programming line 1640 Legionella function 1641 Legionella function periodically 1642 Legionella function weekday Legionella function Periodically The legionella function occurs repeatedly according to the adjusted periodicity command line 1641 Fixed weekday The legionella function can be activated on a ﬁxed day of the week command line 1642 With this setting heating up to the legionella setpoin...

Страница 80: ...the deﬁcit of heat in the full release When the full release reaches the value set 2882 the 3rd stage of the heater is triggered heater 1 ﬁxed on heater 2 control Flow elec release at OT The heater will be activated only if the attenuated outdoor temperature is below the temperature set here Warning If this setting is too low there may be a feeling of discomfort due to the fact that the heat pump ...

Страница 81: ...P DHW charge The heat pump setpoint is limited to the parameterized value during warm water charging The function can be switched oﬀ If the ﬂow temperature is higher than the parameterized value the DHW charging with heat pump will be stopped and ﬁnished with electrical immersion heater or auxiliary heat generator With electrical utility lock This setting relates to input EX1 load shedding or peak...

Страница 82: ...f the supplementary producer depends on a number of parameters a detailed description of which is given on the following pages Release is eﬀected via release relay QX2 2 position control is eﬀected via control relay QX3 Ux can be used to transmit the supplementary source a DC 0 10 V signal for the required temperature output setpoint Line Nr Programming line 3692 With DHW charging Deﬁnes the relea...

Страница 83: ...ed The DHW will be heated to the nominal setpoint even if the room heating has not received enough power in the meantime If a value between 10 and 600 is selected charging will be suspended after the time period set in minutes and will remain suspended over that time before resuming The generator power remains available in the meantime to heat the room This cycle is repeated until the DHW nominal ...

Страница 84: ...ing circuit 1 to appear Heating circuit 2 Using this setting heating circuit 2 can be switched on and oﬀ DHW Line Nr Programming line 5731 DHW ctrl elem Q3 No charging request No DHW charging via Q3 Charging pump DHW charging is eﬀected with a pump connected to terminal Q3 Diverting valve DHW charging is eﬀected with a diverting valve connected to terminal Q3 Electric backup Line Nr Programming li...

Страница 85: ...x every 6 hours Continuously off ON Periodically ON OFF Miscellaneous Line Nr Programming line 6205 Reset to default parameters 6220 Software version Reset to default parameters All parameters can be reset to factory settings except when it comes to the following pages Time and date User interface and all time programs as well as the operating hours and the various counters Software version The so...

Страница 86: ...by the Reset question can be manually reset Press the OK key once Yes ﬂashes on the display Press the OK key again to conﬁrm the Yes and the error will be reset Automatic reset Automatic clearing occurs after a previously set time OEM setting has elapsed After this timeout 6 hours by default has elapsed the controller will attempt to reset the error If Number appears in the table it is possible to...

Страница 87: ...sensor No Yes No 146 Sensor control device conﬁguration No No Yes 171 Alarm contact 1 activated H1 H31 No No Yes 172 Alarm contact 2 activated H21 H22 H32 No No Yes 174 Alarm contact 4 active H3 No No Yes 178 HC1 safety thermostat No No Yes 179 HC2 safety thermostat No No Yes 201 Frost alarm BX1 X80 Yes No No 243 Swimming pool sensor BX34 X154 No No Yes 325 BX ext unit same sensors No No Yes 327 E...

Страница 88: ...on to be run with the available heaters ﬂow storage tank DHW tank In this case the compressor will remain oﬀ Line Nr Programming line 7141 Emergency operation 7142 Emergency operating function type Emergency operation 7141 Emergency operation can be activated and deactivated manually Oﬀ Emergency operation is deactivated On Emergency operation is activated Emergency operating function type 7142 Ma...

Страница 89: ...tput QX21 module 1 14 Relay output QX22 module 1 15 Relay output QX23 module 1 16 Relay output QX21 module 2 17 Relay output QX22 module 2 18 Relay output QX23 module 2 19 Not used 20 Not used 21 Not used The display shows the Key symbol Pressing the Info button displays Error 368 Warning The component being tested is receiving electrical power throughout the test Warning During testing of an outp...

Страница 90: ...tion active Install frost protection active Summer mode Summer mode Oﬀ Eco day active Reduced decrease Frost protection decrease Room temperature limitation Oﬀ State DHW 8003 End user Info level Startup heating engineer Thermostat response Thermostat response Manual action active Manual action active Draw oﬀ mode Draw oﬀ mode Adiabatic cooling active Adiabatic cooling by collector adiabatic coolin...

Страница 91: ...itchoﬀ time active Excess heat compensation Frost protection active Heat pump frost protection Defrosting activated Defrosting activated Cooling mode active Comp min ON time active Comp 1 ON Heating Comp min ON time active Heat deﬁciency compensation Max cond diﬀ limit Min cond diﬀ limit Comp 1 and heater ON Comp 1 ON Heater ON Frost protection active Install frost protection active Oﬀ Flow active...

Страница 92: ...ays the cumulative locking time since start up by the electrical services via external locking signal Counter number of locks HP Displays the cumulative locks since start up by the electrical services via external locking signal Hours run el ﬂow Start counter el ﬂow These lines are used to view the hours of operation and the number of startups of electric heater Consumer Diagnosis Functions Variou...

Страница 93: ... this output are currently disconnected The display On means that the associated components are currently switched on Status of Relays for Extension Modules 1 and 2 Line Nr Programming line 9050 Relay output QX21 module 1 9051 Relay output QX22 module 1 9052 Relay output QX23 module 1 9053 Relay output QX21 module 2 9054 Relay output QX22 module 2 9055 Relay output QX23 module 2 The switching stat...

Страница 94: ...ons Never touch any terminal or pattern of any parts on the control board Setting this function enables quicker defrost determination Level 1 Normal default setting Level 2 Quicker colder climate setting Note The setting Quicker colder climate setting is suitable for regions regularly subject to freezing fogs for more than 24 hours continuously LED display and switches LED display Switches fig 8 L...

Страница 95: ...ing PUMP DOWN LOW NOISE PEAK CUT L1 L2 L3 L4 L5 L6 Defrost determination control O O O O Blink Blink Sign O Lights oﬀ O Lights on 5 Press SELECT button SW108 and adjust LED lamp as shown in below ﬁgure PEAK CUT L4 L5 L6 Defrost determination control Level 1 Nornal O O Blink OR OR Level 2 Quicker O Blink O Sign O Lights oﬀ O Lights on 6 Press ENTER button SW109 and ﬁx it PEAK CUT L4 L5 L6 Defrost d...

Страница 96: ...3 Descale the exchanger to maintain performance Removeanyscaledepositsthatmayhaveaccumulated in the tank It is best to leave any scale sticking to the sides of the tank this forms a protective layer Gently remove any scale deposits on the thermowell Do not use any metal objects or chemical or abrasive products Replace the electrical backup s gasket ref 4 each time it is dismantled Reinstall the el...

Страница 97: ...k Channel B open Return from the heating circuit ACI check Check polarity Check voltage With the appliance powered on the voltage value must be positive and lie between 10 and 13 V DC fig 6 Mounting the distribution valve fig 9 ACI check Flow towards exchanger Return from the heating circuit B A AB Return from DHW tank Valve Valve motor U 10 13V Contrôle de l alimentation ACI Raccordement Raccorde...

Страница 98: ...liding downward Remove the SERVICE PANEL Remove the mounting screws Hooks 4 places serrated Screws Single phase type Appearance Service panel removal Before servicing the unit turn the power supply switch OFF then do not touch electric parts for 10 minutes due to the risk of electric shock Waterstage Maintenance Manual 2105 EN ...

Страница 99: ...ful about position of FAN motor connector when you exchange Main PCB or FAN motor by the repair Caution Spacers Earth screw Spacers Remove the communication cable connected to the terminal Remove the earth screw x 2 places Disconnect the connectors and release the spacers Waterstage Maintenance Manual 2105 EN ...

Страница 100: ... 100 Remove the 6 mounting screws Open the CONTROL BOX MAIN INVERTER PCB FITER PCB Screws Screws Inverter PCB and Filter PCB removal Waterstage Maintenance Manual 2105 EN ...

Страница 101: ...PCB removal Remove the connectors and Earth screws Earth screw Note the tightening torque at the installation Tightening torque is 2 5 0 2 N m except for the earth screw Remove the volts 4 places Tightening torque is as follows Final tightening 2 3 to 2 7 N m Remove the spacers 8 places Waterstage Maintenance Manual 2105 EN ...

Страница 102: ...que is as follows Final tightening 1 4 to 1 6 N m For screws of Filter PCB Inverter PCB Wire Note the tightening torque at the installation Tightening torque is as follows Final tightening 2 3 to 2 7 N m Remove the 4 connectors Power supply CT Communication and Pressure switch Remove the spacers 8 places Spread the heat transfer compound on IPM when you exchange INVERTER PCB by the repair Note at ...

Страница 103: ... 103 High Pressure Pressure Sensor 4 way valve Solenoid Coil Pressure Switch Low Pressure Pressure Sensor Pressure sensor solenoid coil removal Waterstage Maintenance Manual 2105 EN ...

Страница 104: ...ves to prevent the frostbite because a small amount of refrigerant leaks during work Remove the PRESSURE SENSOR with wrench Note the tightening torque at the installation Tightening torque is 15 1 5N m Waterstage Maintenance Manual 2105 EN ...

Страница 105: ... 105 Solenoid coil 4 way valve removal Remove the SOLENOID COIL Remove the mounting screw with wrench or short screwdriver Waterstage Maintenance Manual 2105 EN ...

Страница 106: ...e careful so as not to bend the pipe Turn the EEV COIL Remove the THERMISTOR SPRING Remove the THERMISTOR Careful not to disconnect the thermistor wire with a strong pull Cut the binders 2 places Thermistor removal Waterstage Maintenance Manual 2105 EN ...

Страница 107: ...Remove the FAN MOTOR Remove the 5 mounting screws Remove the nut And remove the PROPELLER FAN Remove the FAN GUARD by sliding upward Note at the installation Insert propeller Fan and Moter shaft reference D cutting position And the tightening torque at the installation Tightening torque is from 10 to 12 N m Screws Screws Fan motor removal Waterstage Maintenance Manual 2105 EN ...

Страница 108: ... 108 Remove the TOP PANEL Screw serrated Screws with washer Remove the mounting screws with washer Screws Top panel removal Waterstage Maintenance Manual 2105 EN ...

Страница 109: ... 109 Screws Remove the REACTOR Remove the wire and mounting screw Reactor removal Waterstage Maintenance Manual 2105 EN ...

Страница 110: ...y sliding upward Remove the RIGHT PANEL Remove the mounting screws Screws Screws Remove the mounting screws Remove the PIPE COVER FRONT Hooks serrated screw with washer screw Right panel removal Waterstage Maintenance Manual 2105 EN ...

Страница 111: ... Procedure for compressor removal 1 Turn oﬀ power 2 Remove the SERVICE PANEL and PIPE COVER FRONT 3 Fully open the 3WAY VALVE Gas and 3WAY VALVE Liquid 4 Open the EEVs of Outdoor units and Indoor units by vaccuming mode 5 Collect the refrigerant from the 3WAY VALVE Start the following work after completely collecting the refrigerant Do not reuse the refrigerant that has been collected Waterstage M...

Страница 112: ... 112 Remove the COMPRESSOR WIRES COMPRESSOR WIRES Remove the TERMINAL COVER TERMINAL COVER Waterstage Maintenance Manual 2105 EN ...

Страница 113: ... 113 Remove the COMPRESSOR COVERS COMPRESSOR COVER C COMPRESSOR COVER A COMPRESSOR COVER B Waterstage Maintenance Manual 2105 EN ...

Страница 114: ...Discharge Cut the binders 2 place Remove the Thermistor clip and Thermistor Discharge Remove the Thermistor Comp temp Thermistor Comp temp Thermistor Discharge Thermistor Comp temp Waterstage Maintenance Manual 2105 EN ...

Страница 115: ...e the Compressor Suction side Cut the Discharge pipe in this range Remove the COMP BOLTs 4 places Procedure for compressor installation Reverse procedure to removing the compressor Precautions for installation of Compressor 1 When brazing do not apply the ﬂame to the terminal 2 When brazing be sure to replace the air in the pipe with nitrogen gas to prevent forming oxidization scale Waterstage Mai...

Страница 116: ...to prevent forming oxidization scale 7 Open the 3WAY VALVE because there is a possibility of squirting the refrigerant from the heated pipes at brazing Part name Allowable temperature Precautions in work SOLENOID VALVE 120 C Remove the coil before brazing And install the coil after brazing EXPANSION VALVE 120 C Remove the coil before brazing And install the coil after brazing 4 WAY VALVE 120 C Rem...

Страница 117: ... ...

Страница 118: ...105 EN Makre sure that the wires are not pinched when you close the SERVICE PANEL Caution by sliding downward Remove the SERVICE PANEL Remove the mounting screws Hooks 4 places serrated Screws 3 phase type Appearance Service panel removal ...

Страница 119: ...04 DC FAN 1 For Upper Fan motor Be careful about position of FAN motor connector when you exchange Main PCB or FAN motor by the repair Caution Spacers Earth screw Spacers Remove the communication cable connected to the terminal Remove the earth screw x 2 places Disconnect the connectors and release the spacers ...

Страница 120: ... 120 Waterstage Maintenance Manual 2105 EN Remove the 6 mounting screws Open the CONTROL BOX MAIN FITER PCB Screws Screws INVERTER PCB Inverter PCB and Filter PCB removal ...

Страница 121: ... places Remove the connector Filter PCB Inverter PCB wire Connector For Filter PCB Inv PCB Wire Spacers Remove the earth screws Earth screw Note the tightening torque at the installation Tightening torque is 2 5 0 2 N m except for the earth screw Filter PCB removal ...

Страница 122: ... at the installation Tightening torque is as follows Final tightening 1 4 to 1 6 N m Remove the 4 connectors Power supply CT Communication and Pressure switch Remove the spacers 7 places Spread the heat transfer compound on IPM when you exchange INVERTER PCB by the repair Note at the installation 1 Remove the old heat transfer compound as possible from IPM and Diode Bridges when you exchange INVER...

Страница 123: ... 123 Waterstage Maintenance Manual 2105 EN High Pressure Pressure Sensor 4 way valve Solenoid Coil Pressure Switch Low Pressure Pressure Sensor Pressure sensor solenoid coil removal ...

Страница 124: ...05 EN Pressure sensor removal Remove the PRESSURE SENSOR with wrench Note the tightening torque at the installation Tightening torque is 15 1 5N m Wear gloves to prevent the frostbite because a small amount of refrigerant leaks during work ...

Страница 125: ... 125 Waterstage Maintenance Manual 2105 EN Solenoid coil 4 way valve removal Remove the SOLENOID COIL Remove the mounting screw with wrench or short screwdriver ...

Страница 126: ... removal Remove the EEV coil by hand Be careful so as not to bend the pipe Turn the EEV COIL Remove the THERMISTOR SPRING Remove the THERMISTOR Careful not to disconnect the thermistor wire with a strong pull Cut the binders 2 places Thermistor removal ...

Страница 127: ...an motor Remove the 4 mounting screws Remove the FAN MOTOR Remove the 5 mounting screws Remove the nut And remove the PROPELLER FAN Remove the FAN GUARD by sliding upward Note at the installation Insert propeller Fan and Moter shaft reference D cutting position And the tightening torque at the installation Tightening torque is from 10 to 12 N m Screws Screws Fan motor removal ...

Страница 128: ... 128 Waterstage Maintenance Manual 2105 EN Remove the TOP PANEL Screw serrated Screws with washer Remove the mounting screws with washer Screws Top panel removal ...

Страница 129: ... 129 Waterstage Maintenance Manual 2105 EN Remove the REACTOR Remove the wire and mounting screw Screws Screws Reactor removal ...

Страница 130: ...ual 2105 EN Pipe cover front removal by sliding upward Remove the RIGHT PANEL Remove the mounting screws Screws Screws Remove the mounting screws Remove the PIPE COVER FRONT Hooks serrated screw with washer screw Right panel removal ...

Страница 131: ...t inside refrigerant pipes during work Procedure for compressor removal 1 Turn oﬀ power 2 Remove the SERVICE PANEL and PIPE COVER FRONT 3 Fully open the 3WAY VALVE Gas and 3WAY VALVE Liquid 4 Open the EEVs of Outdoor units and Indoor units by vaccuming mode 5 Collect the refrigerant from the 3WAY VALVE Start the following work after completely collecting the refrigerant Do not reuse the refrigeran...

Страница 132: ... 132 Waterstage Maintenance Manual 2105 EN Remove the COMPRESSOR WIRES COMPRESSOR WIRES Remove the TERMINAL COVER TERMINAL COVER ...

Страница 133: ... 133 Waterstage Maintenance Manual 2105 EN Remove the COMPRESSOR COVERS COMPRESSOR COVER C COMPRESSOR COVER A COMPRESSOR COVER B ...

Страница 134: ...Maintenance Manual 2105 EN Thermistor Discharge Cut the binders 2 place Remove the Thermistor clip and Thermistor Discharge Remove the Thermistor Comp temp Thermistor Comp temp Thermistor Discharge Thermistor Comp temp ...

Страница 135: ...t the Suction pipe in this range Remove the Compressor Suction side Cut the Discharge pipe in this range Remove the COMP BOLTs 4 places Procedure for compressor installation Reverse procedure to removing the compressor Precautions for installation of Compressor 1 When brazing do not apply the ﬂame to the terminal 2 When brazing be sure to replace the air in the pipe with nitrogen gas to prevent fo...

Страница 136: ...the air in the pipe with nitrogen gas to prevent forming oxidization scale 7 Open the 3WAY VALVE because there is a possibility of squirting the refrigerant from the heated pipes at brazing Part name Allowable temperature Precautions in work SOLENOID VALVE 120 C Remove the coil before brazing And install the coil after brazing EXPANSION VALVE 120 C Remove the coil before brazing And install the co...

Страница 137: ... ...

Страница 138: ... ...

Страница 139: ... ...

Страница 140: ...llation Contact of your heating technician or your after sales service Fujitsu General Euro GmbH Fritz Vomfelde Strasse 26 32 40547 Düsseldorf Germany Subject to modiﬁ cations without notice Non contractual document ...

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