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Fujitsu Waterstage WO G112LCT Series, Maintenance Document

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Fujitsu Waterstage WO G112LCT Series Maintenance Document Download Page 43

Split system (Single phase and 3-phase type) 

 

Maintenance Document 

1544-1

  

 

43

 

3.1.3 Refrigeration System 

Unit produces no heat 

The unit remains in continuous scanning mode. 
 

Initial checks: 

Check the settings 
Are the data sent by the user interface received by the heat pump? 

 

 

Hydraulic unit 

electronic circuit 

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 

Summary of Contents for Waterstage WO G112LCT Series

Page 1: ...WO G140LCT Split System 3 phase type Hydraulic unit WS K160DC9 Outdoor unit WO K112LCT WO K140LCT WO K160LCT Document 1544 1 20 06 2012 Maintenance Document Intended for professional use Fujitsu General Euro GmbH Werftstrasse 20 40549 Düsseldorf Germany Subject to change without notice Non contractual document FR EN ...

Page 2: ......

Page 3: ...lic System 41 3 1 2 Electrical System 42 3 1 3 Refrigeration System 43 3 2 Compressor Operating Checks 45 3 3 Refrigeration Circuit Leak Test 45 3 4 Troubleshooting 45 4 Control Settings 46 4 1 General 46 4 2 Function Table 47 4 3 Adjustment Function Details 53 4 3 1 Date and Time Functions 53 4 3 2 User Interface Functions 53 4 3 3 Time Program Functions heating circuit 1 2 DHW cooling 54 4 3 4 H...

Page 4: ...0 EEV COIL removal 99 6 1 11 PRESSURE SENSOR removal 99 6 1 12 COMPRESSOR removal 99 6 2 3 phase type 99 6 2 1 Appearance 99 6 2 2 Service panel removal 99 6 2 3 Insulation sheet removal 99 6 2 4 Main PCB removal 99 6 2 5 INVERTER PFC FILTER and CAPACITOR PCB removal 99 6 2 6 FAN MOTOR removal 99 6 2 7 TOP PANEL removal 99 6 2 8 PIPE COVER FRONT removal 99 6 2 9 RIGHT PANEL removal 99 6 2 10 REACT...

Page 5: ...ct to authorization by EX2 2 provided the outdoor temperature is less than the setting on 2884 or 3700 2 from the beginning 1 2 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 78...

Page 6: ...nt No 370 Thermodynamic source No No No No connection the polarity of the room sensor is not respected No A fault in the outdoor unit is indicated by LED located on the Hydraulic Unit interface board LED display LED 2 green LED 1 red Fault description 1 Flash 1 Flash Communication error between Hydraulic Unit and Outdoor unit 4 Flashes 1 Flash Heat pump capacity signal error Open or short 4 Flashe...

Page 7: ...vice e g thermostat pressure switch wired to input Ex3 E20 allows external problems to be reported and the heat pump to be immediately stopped For example a safety thermostat on the heating floor can be wired to input Ex3 E20 to avoid excessively high temperatures in the floor Figure 1 Typical Wiring of External Devices ...

Page 8: ...ulic Unit Heat ex Sensor error 5 6 flashes 3 flashes 18 flashes Inverter error 20 Active filter error single phase 21 6 flashes 4 flashes 19 flashes P F C error 3 phase 27 7 flashes 1 flash 2 flashes Discharge thermistor error 7 7 flashes 2 flashes 8 flashes Compressor thermistor error 11 5 flashes Heat exchange thermistor intermediate error 12 7 flashes 3 flashes 4 flashes Heat exchange thermisto...

Page 9: ...supply voltage Check that an AC 198 264 V voltage exists between 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 equipmen...

Page 10: ...erminals 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 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 c...

Page 11: ...ailure Interface PCB failure Check 1 Check connection interface 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 10Ω OK 3 Replace interface PCB If check point 1 and 2 do not improve the symp...

Page 12: ...he connection is correct Check for any damage on the sensor 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 voltag...

Page 13: ...ection 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 30 40 50 Resistance kΩ 168 130 101 79 63 40 26 3 17 8 Temperature C 60 70 80 90 100 120 Resistance kΩ 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 c...

Page 14: ...nsor cable After solving the misconnection problem switch 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 kΩ 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 ther...

Page 15: ...olving the misconnection problem switch the heat pump back 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 kΩ 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 t...

Page 16: ...n 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 30 40 50 Resistance kΩ 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 kΩ 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 uni...

Page 17: ...ction 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 30 40 50 Resistance kΩ 168 130 101 79 63 40 26 3 17 8 Temperature C 60 70 80 90 100 120 Resistance kΩ 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 ch...

Page 18: ...he sensor 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 10 5 0 10 15 20 25 30 Resistance kΩ 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...

Page 19: ...nnection 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 30 40 50 Resistance kΩ 168 130 101 79 63 40 26 3 17 8 Temperature C 60 70 80 90 100 120 Resistance kΩ 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...

Page 20: ...f 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 3 Check Outdoor Fan 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...

Page 21: ...Compressor failure Check 2 Check Compressor Refer to Service 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 Check connections condition in control unit Check if the terminal connection is loose Check if connector is removed Check if connector is erroneous connection Chec...

Page 22: ...heat pump and rotate the fan manually If the fan or bearings 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...

Page 23: ...able causes Connection failure Main PCB failure Check 1 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 ...

Page 24: ...er module failure Main PCB failure Check 1 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 Active Filter Module and Main PCB If Check Point 1 does not improve the symptom replace Main PCB and Active...

Page 25: ... is open If it is not open open it and check the operation 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 hold...

Page 26: ... 3 pin Black DC5V 5 If the voltage is not correct replace 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 r...

Page 27: ...he operation 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 compressor temperature Thermistor Is it on the holder Is there a cable pinched Check char...

Page 28: ...Black DC5V 5 If the voltage is not correct replace Main 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 Che...

Page 29: ...tage of Main PCB Check voltage of Main PCB Measure at Main 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 conn...

Page 30: ...D 14 flashes Probable causes Misconnection Main PCB failure Check 1 Check connections condition 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 OK 2 Replace the electronic board If steps 1 does not solve the problem replace Ma...

Page 31: ... circuit which might cause a drop in voltage Check for any 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 an...

Page 32: ...ent leaks Check for any equipment generating electromagnetic 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 ...

Page 33: ...there any objects blocking the air flow Is the outdoor 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 betwee...

Page 34: ...essor failure Checks 1 The noise comes from the outdoor 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 ...

Page 35: ...lue k 5 18 3 45 2 36 1 65 Heat sink Temperature C 0 5 10 15 20 30 40 50 60 Resistance value k 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 k 0 83 0 60 0 44 0 33 0 25 0 19 2 3 2 Hydraulic Unit Temperature Sensors Heat Exchanger Condensing sensor Temperature C 0 5 10 15 20 25 30 35 40 45 50 Resistance value k 176 134 103 80 3 62 9 49 7 39 6 31 7 25 6 ...

Page 36: ...r is considered locked compressor due to clogged dirt or less oil Replace compressor Is there open or loose connection cable Is gas pipe valve open 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...

Page 37: ...se type Check connection of inverter PCB Loose or incorrect wiring Check point 2 check winding resistance Check winding resistance on each terminal If the resistance value is 0Ω or infinite replace compressor Check point 3 replace Main PCB If check point 1 and 2 do not improve the symptom replace Main PCB RED BLACK WHITE BLACK WHITE Compressor Resistance value 0 24 Ω at 20 C for single phase type ...

Page 38: ...replace Main PCB Check point 5 Check opening and closing operation of valve When valve is closed it has a temp Add period difference between inlet and outlet If it is open it has no temp Add period difference between inlet and outlet There is no refrigerant flow coming to EEV INJ while the liquid injection is inactive Check whether the liquid injection is active before executing check point 5 for ...

Page 39: ... and closing operation valve Depending on the injection activity 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 dir...

Page 40: ...circuit max pressure Bar 3 Maximum flow rate l h 2340 2920 2340 2920 3290 Minimum flow rate l h 1170 1460 1170 1460 1650 Refrigerant circ max pressure kPa 4 2 Min delta T C 4 Max delta T C 8 Outdoor unit Noise level 1 dBA 55 56 53 55 56 Outdoor unit Noise level 5 dBA 39 41 39 41 42 Outdoor unit air flow rate m3 h 3100 x 2 3450 x 2 Acoustic pressure level reading at 1m in open field on a reflecting...

Page 41: ...river Installer Pipe leak Pipe under warranty if faulty Service station 3 Leak Low level in expansion vessel On collector isolate heating circuits to determine which heating circuit is perforated Leak in heating circuit Floor again Installer On collector check heating circuit flow return temps infrared thermometer Clear with test pump 4 Clogged heating circuit crushed pipe Very high difference bet...

Page 42: ...tem using the circuit breaker at the head of the line Remove 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 co...

Page 43: ...eceived by the heat pump Hydraulic unit electronic circuit 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 Y...

Page 44: ...fety mode If you still have doubts as to the charge perform 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 o...

Page 45: ...not see the displayed value increasing slowly up to a value greater than the multimeter maximum rating 3 3 Refrigeration Circuit Leak Test The new regulation requires annual 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 3 4 Troubleshooting The heat pump is not operating at all...

Page 46: ...that changing the settings below may cause the heat pump to behave in an undesirable way A testing period should be conducted before the permanent settings of the heat pump are confirmed This may require a number of changes to be made by the installer There are 4 access levels U end user level I commissioning level installer start up S engineer level specialist C OEM level manufacturer not availab...

Page 47: ... 00 503 U 2nd phase on 00 00 504 U 2nd phase off 00 00 505 U 3rd phase on 00 00 506 U 3rd phase off 00 00 515 U Copy 516 U Default values Circuit 1 No yes No Time prog heating circuit 2 520 U Preselection Mon Sun Mon Fri Sat Sun Mon Tue Wed Thu Fri Sat Sun Mon Sun 521 U 1st phase on 00 00 6 00 522 U 1st phase off 00 00 22 00 523 U 2nd phase on 00 00 524 U 2nd phase off 00 00 525 U 3rd phase on 00 ...

Page 48: ...on Off 730 I Summer winter heating limit 8 C 30 C 18 C 732 S 24 hour heating limit 10 C 10 C 2 C 740 I Flow temp setpoint min for fan convectors 8 C 95 C 8 C 741 I Flow temp setpoint max 8 C 95 C 55 C 750 S Room influence 1 100 50 780 S Quick setback Off Down to reduced setpoint Down to frost prot setpoint Down to reduced setpoint 790 S Optimum start control max 0 360min 180 min 791 S Optimum stop...

Page 49: ... 1050 I Room influence 1 100 50 1080 S Quick setback Off Down to reduced setpoint Down to frost prot setpoint Down to reduced setpoint 1090 S Optimum start control max 0 360min 180 min 1091 S Optimum stop control max 0 360min 60 min 1100 S Reduced setpoint increase start 30 10 C 1101 S Reduced setpoint increase end 30 10 C 5 C 1130 S Mixer valve boost 0 50 C 0 C 1134 S Actuator running time 30 873...

Page 50: ... 5710 I Heating circuit 1 Off On On 5711 I Cooling circuit 1 Off 4 pipe system 2 pipe system Off 5715 I Heating circuit 2 Off On On 5731 I DHW ctrl elem Q3 No charging request Charging pump Diverting valve Diverting valve 5806 I Type el imm heater flow 1 3 stage 2 2 stage excluding 3 2 stage complementary 4 Modulating UX 3 2 stage complementary 5981 S Cont type input EX1 NC NO NO 5983 S Cont type ...

Page 51: ...module 2 Relay output QX22 module 2 Relay output QX23 module 2 No test 7710 I Output test UX1 0 100 7712 I PWM Signal UX1 0 100 0 7716 I Output test UX2 0 100 7719 I PWM Signal UX2 0 100 0 7722 I Cooling mode DO2 On off Off 7723 I Heat pump D3 On off Off 7724 I Output test UX3 0 100 7725 I Voltage value UX3 0 100 7820 I Sensor temp BX1 28 350 C 7821 I Sensor temp BX2 28 350 C 7822 I Sensor temp BX...

Page 52: ...alve HC1 open Off on Off 8732 I Mixer valve HC1 closed Off on Off 8740 U Room temp 1 0 50 C 8743 U Flow temp 1 0 140 C 8756 U Flow temperature cooling 1 0 140 C 8760 I Heating circulation pump circuit 2 Off on Off 8770 U Room temp 2 0 50 C 20 C 8773 U Flow temp 2 0 140 C 8820 I DHW pump Off on Off 8821 I Electric immersion heater DHW Off on Off 8830 U DHW domestic hot water temperature 0 140 C 55 ...

Page 53: ...r time The time changes automatically from 2am winter time to 3am summer time or from 3am summer time to 2am winter time on the first Sunday following the respective date 4 3 2 User Interface Functions LINE NO PROGRAMMING LINE 20 Language 22 Info 26 Operation lock 27 Programming lock 28 Direct adjustment 29 Temperature unit Pressure unit Info 22 Temporary After pressing the Info key the informatio...

Page 54: ...rsion of the user interface 4 3 3 Time Program Functions heating circuit 1 2 DHW cooling Several control programs are available for the heating circuits and the production of DHW They are initiated in Automatic mode and control the change in temperature levels and therefore the associated setpoints reduced and comfort via the adjusted changeover times Enter changeover times Changeover times can be...

Page 55: ...xtension module has been connected to the controller Operation of heating circuits 1 and 2 is directly controlled via the operating mode key Setpoint Values Line no HC1 HC2 Programming line 710 1010 Comfort setpoint 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 Depen...

Page 56: ...he extent to which the slope will modify the flow temperature In other words the slope should be corrected if the room temperature shows a difference when the outdoor temperature is low but not when it is high o Increase the setting The flow temperature is increased mainly when the outdoor temperatures are low o Decrease the setting The flow temperature is lowered mainly when the outdoor temperatu...

Page 57: ...ramming line 730 1030 Summer winter heating limit 732 1032 24 hour heating limit Summer winter heating limit The summer winter heating limit switches the heating on or off through the year according to the temperature ratio Changeover is performed automatically when in automatic mode and thus avoids the user having to turn the heating on or off Changing the input value makes the respective annual ...

Page 58: ...line 750 1050 Room influence Control types When using a room temperature sensor there are 3 different types of control to choose from SETTING CONTROL TYPE Simple control according to outdoor conditions 1 99 Control according to outdoor conditions with room influence 100 Control according to room temperature only Requires the connection of an outdoor sensor Simple control according to outdoor condi...

Page 59: ...cuit pump is deactivated and in the case of mixing circuits the mixing valve is fully closed When using a room sensor the function keeps the heating off until the room temperature drops to the level of the Reduced or Frost protection setpoint If the room temperature falls to the reduced or frost level the heating circuit pump is activated and the mixing valve released Quick setback switches the he...

Page 60: ...e can be adjusted With a 2 position servomotor the adjusted travel time is inoperative Controlled floor drying function Line no HC1 HC2 Programming line 850 1150 Floor curing function 851 1151 Floor curing setpoint manually 856 1156 Floor curing day current 857 1157 Floor curing day completed This function is used in the controlled drying of floors It adjusts the flow temperature to a temperature ...

Page 61: ...rtant After a power outage the installation resumes the controlled drying function as it was when the outage occurred Operating Mode Changeover Line no HC1 HC2 Programming line 900 1200 Optg mode changeover None Frost protection mode Reduced Comfort Automatic In case of an external changeover via input H2 on the extension module only the operating mode to which the changeover will be performed mus...

Page 62: ... order for both zones to be adequately cooled according to the available emitters WARNING Cooling mode is prohibited on all radiators heating only floors or any emitters not intended for this purpose Operating Mode Line no Programming line 901 Operating mode Off Automatic The cooling key on the user interface enables switching between operating modes Off The cooling function is deactivated Automat...

Page 63: ...is adjusted for a 25 C room temperature setpoint If the room temperature setpoint is changed the curve will automatically adapt Eco Line no Programming line 912 Cooling limit at OT 913 Lock time after end of heating Cooling limit at OT If the composite outdoor temperature is higher than the cooling limit cooling is released If the composite outdoor temperature falls at least 0 5 C below the coolin...

Page 64: ... resulting room 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...

Page 65: ...utdoor temperature is available the controller will use the Min flow setpoint at OT 35 C parameter Room Influence Line no Programming line 928 Room influence When using a room temperature sensor there are 3 different types of control to choose from SETTING CONTROL TYPE Simple control according to outdoor conditions 1 99 Control according to outdoor conditions with room influence 100 Control accord...

Page 66: ...lly open Control according to room temperature only The flow temperature is adjusted according to the room temperature setpoint the current room temperature and its evolution A slight increase in room temperature for example causes an immediate drop in the flow temperature Activation of the function requires taking into account the following requirements A room sensor must imperatively be connecte...

Page 67: ...perature the flow setpoint will be 18 C in both zones WARNING 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...

Page 68: ... the desired temperatures to be reached in the DHW storage tank Important For optimal operation we recommend reducing the setpoints to the lowest value Setpoints which are too high may interfere with heating and cause some discomfort In this case DHW Heating changeover cycles may successively occur If DHW charge boosting is not desired during the day we recommend adjusting the reduced temperature ...

Page 69: ...ch time Example Time program 4 DHW Recommended Time program 4 of the local controller is taken into account for the DHW mode The changeover between DHW nominal setpoint and DHW reduced setpoint occurs on the changeover times of this program Thus domestic hot water charging takes place independently from the heating circuits Low tariff Released when the low tariff input is active Input Ex2 Time pgm...

Page 70: ...input always triggers forced DHW charging If the low tariff input EX2 has not been configured and release via OPK has nevertheless been set the DHW level will either continuously remain on reduced or will follow time program 4 Legionella Function Line no Programming line 1640 Legionella function 1641 Legionella function periodically 1642 Legionella function weekday Legionella function Periodically...

Page 71: ... again when the temperature at both sensors has dropped by the Switching diff return temp below the maximum switch off temperature and the minimum off time has elapsed Switch off temp max If the flow or the return temperature exceeds the maximum switch off temperature the compressor will be switched off Locking time stage 2 When compressor is restarted the time which keeps minimum capacity can be ...

Page 72: ...ompensation function In the case of sudden setpoint changes both integrals are cleared Behavior in connection with the Floor curing function When activating the Floor curing function the integral is set to a level representing 1 5 times the predefined value factory setting If the current temperature lies at least 2 K below the required setpoint the heat pump is immediately switched on If compensat...

Page 73: ...efore the overrun time has elapsed the release remains activated If the set overrun time elapses before the common flow temperature drops below the common flow temperature setpoint the release is deactivated also Flow control Line no Programming line 3720 Switching integral 3723 Locking time Switching integral The temperature time integral is a continuous summation of the temperature differential ...

Page 74: ...ng is triggered on the first DHW release of the day Charging is also launched when the DHW temperature is within the differential and as long as it is not less than 1K above the setpoint Charging time limitation During charging the room heating may be stopped or insufficient Therefore it is often advisable to limit the charging process timewise to enable heating If has been selected the charging t...

Page 75: ...release 24h day The heater is continuously active regardless of time programs DHW release The heater is controlled according to DHW release Time program 4 DHW Time program 4 DHW of the local controller is taken into account for the heater Information Switch on will actually be in effect only if the heater is able to operate according to the heater operating mode setting ...

Page 76: ...ed Warning If the cooling kit has not been connected and the cooling mode is activated the heat pump will behave abnormally and might cause some unwanted discomfort Information Switching on the cooling mode causes the menu Cooling circuit 1 to appear Heating circuit 2 Using this setting heating circuit 2 can be switched on and off DHW Line no Programming line 5731 DHW ctrl elem Q3 No charging requ...

Page 77: ...ion plant According to the outdoor temperature the heating circuit pump and the condenser pump are switched on although there is no demand for heat Miscellaneous Line no 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 t...

Page 78: ...which are displayed in the Info section and accompanied 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 ...

Page 79: ...rm summary E20 Yes Number No 138 No heat pump control 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...

Page 80: ...operation obtained over a period of 6 weeks If the value exceeds the Comp1 max startups hr op adjusted setting the symbol will be displayed and a maintenance message will appear in the Info section 8 Too many compressor 1 startups Priority 9 This setting can be reset with the associated rights of access Emergency mode If the heat pump is not operating properly a emergency service can be maintained...

Page 81: ... in the range of 50 50 C During simulation the current composite and attenuated outdoor temperatures are ignored and substituted with the adjusted simulation temperature Computation of the three outdoor temperatures based on the actual outdoor temperature continues to be performed during the simulation and these temperatures are available again when the simulation is over This function can be deac...

Page 82: ...distribution valve 6 Relay output QX5 DHW Electrical back up 7 Relay output QX6 8 Relay output QX31 Heat circ mix valve open Y1 9 Relay output QX32 Heat circ mix valve close Y2 10 Relay output QX33 heat pump CC2 11 Relay output QX34 12 Relay output QX35 Swimming pool distribution valve 13 Relay output QX21 module 1 14 Relay output QX22 module 1 15 Relay output QX23 module 1 16 Relay output QX21 mo...

Page 83: ...is present at the respective input so that it is activated Input output test I O module Line no Programming line 7973 Sensor temp BX31 7976 Sensor temp BX34 7996 Contact state H33 The sensor test operate the same as for BX1 4 on the basic unit 4 3 15 Status Functions The current operating status of the installation can be viewed by means of status displays Messages Line no Programming line 8000 St...

Page 84: ... priority Restriction storage tank Forced draft Forced draft storage tank Forced draft DHW Forced draft generator Forced draft Switch off delay active Comfort heating mode Optimis at switch on accelerated heating Optimisation at switch on Accelerated heating Comfort heating mode Reduced heating mode Optimisation at switch off Reduced heating mode Frost protection active Room frost protection Flow ...

Page 85: ... Forcing anti legion setpoint Forcing comfort setpoint Charging by heater Charging by heater anti legion setpoint Charging by heater Comfort setpoint Charging by heater Reduced setpoint Charging by heater frost protection setpoint Heater released Accelerated charging active Flow active Anti legion accelerated charging Charging active Charging anti legion setpoint Charging Comfort setpoint Charging...

Page 86: ...mode locked Locked heating mode Lock time after heating Locked generator Locked storage tank Cooling mode restricted Flow temp setpoint increase by hygrostat Dewpoint flow min limit Outdoor temp flow min limit Comfort cooling mode Comfort cooling mode Switch off delay active Cooling protection mode Cooling protection mode Frost protection active Frost protection active OT cooling limit activated O...

Page 87: ... 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 Switch off delay active No demand State swimming pool 8011 End user Info level Startup he...

Page 88: ... DHW Released for DHW In operation for heating circuit In operation for heating circuit Released for HC Released for HC Overrun active Overrun active Off Off 4 3 16 Generator Diagnosis Functions Various setpoints and actual values relay switch status data can be displayed for purposes of diagnosis Heat Pump Line no Programming line 8402 El imm heater flow 1 8403 El imm heater flow 2 8406 Condenser...

Page 89: ...ng 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 4 3 17 Consumer Diagnosis Functions Various setpoints and actual values relay switch status and timing status data can be displayed for purposes of diagnosis Outdoor Temperatures Line no Programming line 8700 Outside temperature 8701 Outside temp min 8...

Page 90: ...W circulation pump and charging temperature operating hour and startup counters are displayed as well as temperatures of the primary controllers and DHW heater Swimming Pool Line no Programming line 8900 Swimming pool temp The current and setpoint temperature of the swimming pool are displayed Line Line no Programming line 8950 Common flow temp Multifunction Relay Status Line no Programming line 9...

Page 91: ... be viewed on these programming lines The display Off means that the components assigned to this output are currently disconnected The display On means that the associated components are currently switched on I O module Line no Programming line 9071 Relay output QX31 9072 Relay output QX32 9073 Relay output QX33 9074 Relay output QX34 9075 Relay output QX35 The switching states of each relay on th...

Page 92: ...eaks 5 2 Outdoor unit clean heat exchanger clean refrigeration and ventilation compartment check for correct condensation drain conduct refrigeration circuit leak test required if charged 2 kg 5 3 Electrical Inspect connections and tighten where appropriate Check condition of wires and boards 5 4 Operating checks conduct refrigeration readings at temperatures in case of malfunction install pressur...

Page 93: ...do not touch electric parts for 10 minutes due to the risk of electric shock 6 1 Single phase type 6 1 1 Appearance 6 1 2 Service panel removal 6 1 3 Top panel removal Screw serrated Hook 3 places Remove the mounting screws Remove the SERVICE PANEL by sliding downward Screw with washer Remove the mounting screws Screw with washer Screw serrated Remove the TOP PANEL Single Phase type ...

Page 94: ...Maintenance Document 1544 1 6 1 4 MAIN PCB FILTER PCB and INDICATOR PCB removal screws Hook 2 places Remove the 1 mounting screw Remove the INVERTER BOX COVER by sliding upward DIODE BRIDGE MAIN PCB ACTPM FILTER PCB INDICATOR PCB Single Phase type ...

Page 95: ...ion Tightening torque is 1 2 0 2N M Remove the MAIN PCB Spread the heat dissipation compound on the other side of IPM when you exchange INVERTER PCB by the repair screw screw Screw of IPM 2 places Holder IPM Screw Screw Holder Earth screw Filter PCB Remove the connectors and screws Remove the earth screw Remove the FILTER PCB Remove the connectors and locking spacers Locking spacers Remove the IND...

Page 96: ...w And remove the PROPELLER FAN Note at the installation Insert propeller Fan and Moter shalf reference D cutting position And the tightening torque at the installation Tightening torque is from 10 to 15 N M Cut the binder 2 places Loose the clamp 2 places and remove the lead wires Remove the 4 mounting screws Remove the FAN MOTOR Hook 4 places screw Remove the mounting screws Remove the VALVE COVE...

Page 97: ...RMISTOR removal HEAT EXCHANGER MID THERMISTOR HEAT EXCHANGER OUT THERMISTOR screw screw Screw with washer Remove the 12 mounting screws Remove the RIGHT PANEL by sliding upward Remove the THERMISTOR SPRING Remove the THERMISTOR Screw serrated Remove the THERMISTOR SPRING Remove the THERMISTOR Single Phase type ...

Page 98: ...STOR 6 1 9 SOLENOID COIL removal 4WAY VALVE INJECTION Remove the THERMISTOR SPRING Remove the THERMISTOR Remove the mounting screw Remove the SOLENOID COIL Remove the mounting screw Remove the SOLENOID COIL Single Phase type Remove the THERMOR HOLDER Open the THERMO HOLDER and remove the THERMISTOR hook ...

Page 99: ...6 1 11 PRESSURE SENSOR removal Warning Wear gloves to prevent the frostbite because a small amount of refrigerant leaks during work Remove the EEV coil by hand Remove the EEV coil by hand Remove the PRESSURE SENSOR with wrench Note the tightening at the installation Tightening torque is 12 1 5N m Single Phase type ...

Page 100: ...e power 2 Remove the service panel and right panel 3 Fully close the 3Way valve gas and 3Way valve liquid 4 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 Compressor cover B Compressor cover A Remove the COMPRESSOR COVER B and COVER A Remove the TERMINAL COVER Remove the connector...

Page 101: ...mistor Discharge Thermistor comp Temp Cut the binder and remove the heat insulation Remove the Thermistor Discharge Remove the Thermistor comp temp and the Thermistor Discharge Remove the COMP BOLTS 3 places Cut the Discharge pipe in this range Range Range Range Cut the Suction pipe in this range Cut the Injection port in this range Keep their shape better There is a possibility of catching fire t...

Page 102: ... 6 2 1 Appearance 6 2 2 Service panel removal 6 2 3 Insulation sheet removal Screw serrated Hook 3 places Remove the mounting screws Remove the SERVICE PANEL by sliding downward INSULATION SHEET Hook 4 places Remove the Hook 4 places Remove the INSULATION SHEET by sliding upward 3 Phase type ...

Page 103: ... and CAPACITOR PCB removal Locking spacers Earth screws Remove the connectors Remove the earth screws and the locking spacers Screws Hook Hook Slit Remove the 4 mounting screws Remove the INVERTER CASE MAIN by slinding upward Hang the hook on the slit PFC PCB FILTER PCB INVERTER PCB CAPACITOR PCB CONDENSER CASE 3 Phase type ...

Page 104: ...RTER PCB Spread the heat dissipation compound on the other side of IPM when you exchange INVERTER PCB by the repair Screw Screws Hook Holder IPM Remove the connectors and screws For screws of IPM Note the tightening torque at the installation Tightening torque is 1 2 0 2N M Remove the PFC PCB Spread the heat dissipation compound on the other side of IPM when you exchange PFC PCB by the repair Lock...

Page 105: ... 105 CAPACITOR PCB removal Screw Hook Remove the connectors codes and screw Remove the CONDENSER CASE by sliding rightward Screws Remove the mounting screws Remove the CONDENSER COVER by sliding toward CAPACITOR PCB Locking spacers Remove the locking spacers 3 Phase type ...

Page 106: ... 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 15Nm Cut the binder 2 places Loose the clamp and remove the lead wires Remove the 4 mounting screws Remove the FAN MOTOR Screw with washer Screw with washer Screw serrated Remove the mounting screws Remove the TOP PANEL Screw serrated Scr...

Page 107: ...STOR removal HEAT EXCHANGER MID THERMISTOR HEAT EXCHANGER OUT THERMISTOR screw screw Screw with washer Remove the 11 mounting screws Remove the RIGHT PANEL by sliding upward Remove the connectors Remove the 3 mounting screws Remove the THERMISTOR SPRING Remove the THERMISTOR 3 Phase type Remove the THERMISTOR SPRING Remove the THERMISTOR ...

Page 108: ...OR THERMISTOR 6 2 12 SOLENOID COIL removal 4WAY VALVE INJECTION Remove the THERMISTOR SPRING Remove the THERMISTOR Remove the mounting screw Remove the SOLENOID COIL Remove the mounting screw Remove the SOLENOID COIL 3 Phase type Remove the THERMOR HOLDER Open the THERMO HOLDER and remove the THERMISTOR hook ...

Page 109: ...ON 6 2 14 PRESSURE SENSOR removal Warning Wear gloves to prevent the frostbite because a small amount of refrigerant leaks during work Remove the EEV coil by hand Remove the EEV coil by hand Remove the PRESSURE SENSOR with wrench Note the tightening at the installation Tightening torque is 12 1 5N m 3 Phase type ...

Page 110: ...off the power 2 Remove the service panel 3 Fully close the 3Way valve gas and 3Way valve liquid 4 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 Compressor cover C Remove the COMPRESSOR COVER C COVER B and COVER A Remove the TERMINAL COVER Remove the connectors R RED C T BLACK S W...

Page 111: ...r Discharge Remove the Thermistor comp temp and the Thermistor Discharge Remove the COMP BOLTS 3 places Cut the Discharge pipe in this range Range Range Range Cut the Suction pipe in this range Remove the COMPRESSOR Cut the Injection port in this range Keep their shape better There is a possibility of catching fire to oil when removing by the welding without cutting it 3 Phase type ...

Page 112: ...me seems to hit the following parts directly 5 Do no allow moisture or debris to get inside refrigerant pipes during work 6 When brazing be sure to replace the air in the pipe with nitrogen gas to prevent forming oxidization scale Part name Allowable temperature Precautions in work EXPANSION VALVE MAIN 120 C Remove the coil before brazing And install the coil after brazing Detaching necessity sens...

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