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Domestic Hot Water Heat Pump Service Manual

48

9.4.5 Er C Evap

– Low evaporator temperature error analysis

The Low evaporation temperature error occurs if:

-29 < BBT2 < -25

9.4.6 Er Filter

– Change filter error analysis

Filter error occurs if D30 (Filter Timer) is ON and the time of the D31 (Filter Timer Time) has
elapsed since the last time the filter timer has been reset in D32 (Filter Reset).

9.5

Resetting of error code & BACK-UP mode

Once the cause of the error has been corrected or a repair has been completed the DHW-HP can
be reset to normal operation.

To reset the error code a power cycle musty be established. Switch the electrical supply to the
DHW-HP OFF and then back ON after approximately 30 seconds.

Once the power has been reset, using the Up & Down arrow buttons on the remote controller,
select the operation mode required, i.e. AUTO mode.

The unit should now operate correctly.

The filter timer has elapsed

Yes

Replace or clean

filters

Is the fan motor operating
correctly?

No

Yes

Is the fan motor

connected to

the PC board?

No

Connect fan motor
to PC board

Does the fan
motor turn?

No

Replace the fan
motor

Is the fan
speed set too
high?

No

Reduce the fan
speed

Is the BT temperature
sensor(s) positioned and
connected correctly?

No

Yes

Is the sensor(s)

correctly

positioned?

No

Move sensor(s) into
correct position

Is the sensor(s)
connected to
the PC board?

No

Connect sensor(s)
to the PC board

Are the BBT1 & BT2
sensors operating correctly
with no defects?

No

Complete steps

from 8.4.1

Yes

Is the inlet temperature too
low

Yes

Increase the
minimum air

temperature from

D7

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Содержание HWS-G1901CNMR-E

Страница 1: ... 18001 R01 AIR TO WATER HEAT PUMP Service Manual Domestic Hot Water Heat Pump Model name HWS G1901CNMR E HWS G1901CNRR E HWS G1901CNXR E HWS G1901ENXR E HWS G2601CNMR E HWS G2601CNRR E HWS G2601CNWR E HWS G2601ENXR E ...

Страница 2: ... C N M R E E R M R X N C E 1 190 260 G Europe Area Tank Type Factory HWS Thermodynamic HWS Model Type A2W TCEU Standard Tank 45 180 variant tank Deluxe PCB Type Coil Type Coil Extra coil 190l Capacity 260l Capacity Enamelled Steel Tank Material Series Number Series 1 Water Tank Capacity ...

Страница 3: ...l 33 7 14 Defrost operation 35 7 15 Legionella operation 36 8 0 Modbus 38 8 1 Monitoring functions 40 8 2 Read write functions 41 9 0 Method of defect analysis 9 1 Matters to be confirmed first 44 9 1 1 Check the power supply voltage 44 9 1 2 Check the cold water supply 44 9 2 In the event of error how to operate BACK UP mode 45 9 3 Error codes 45 9 4 Error code analysis 45 9 4 1 Er1 Er5 Temperatu...

Страница 4: ...3 Remove the evaporator housing top 63 13 4 Replace the heating element 63 13 5 Replace the safety breakers 64 13 6 Replace the anode 64 13 7 Replace the solenoid valve coil 65 13 8 Replace the fan kit 66 13 9 Replace the BT1 Sensor 66 13 10 Replace the BT2 Sensor 67 13 11 Replace the BT3 Sensor 67 13 12 Replace the BT4 Sensor 68 13 13 Replace the Compressor 69 13 14 Replace the Tube kit 70 13 15 ...

Страница 5: ...tic hot water heat pump The manual is to be used by service engineers since it contains important safety diagnosis and operational indications The manual is a part of the domestic hot water heat pump and it is to be conserved with care since it contains important installation and maintenance instructions that can be useful to assure a long life time and an efficient operation About the product The...

Страница 6: ...e the pressure of the refrigerant is lowered to allow its evaporation at a lower temperature 4 The refrigerant is evaporated in the fin coil heat exchanger that uses forced air as a heat source 1 The process goes on until the power supply to the compressor is stopped Note the extensive use of the electric heater leads to a higher electricity consumption and it may lead to high electricity bills Th...

Страница 7: ...at Air20 C W10 C 52 9 C EN16147 4 13 4 2 4 13 4 2 Heat up time A20 C W10 C 53 5 C hh mm 05 15 07 09 05 15 07 09 Cylinder volume l 190 260 184 252 V40 volume W52 9 C l 247 347 234 331 Maximum Qty of water by electric heater only l 75 40 130 50 75 40 130 50 Maximum water temperature C 60 60 60 60 Corrosion protection Magnesium anode Magnesium anode Magnesium anode Magnesium anode Heat pump operating...

Страница 8: ...m 385 385 C mm 280 280 D1 mm 180 300 D2 mm 435 670 D3 mm 375 375 E1 mm 285 285 E2 mm 305 305 F Diameter mm 603 603 G Diameter mm 160 160 H Max Diameter mm 620 620 Height required for installation mm 1700 2040 Standard DHW HP weight dry wet kg 94 284 100 350 Additional coil DHW HP weight dry wet Kg 100 300 120 370 Nominal insulation thickness mm 50 50 ...

Страница 9: ...Anode FN1 Thermal protection The items with are optional Figure 4 Design of the heating circuit and the main components Sensors BBT1 Air inlet temperature BBT2 Evaporator temperature BBT3 Tank water temperature BBT4 Additional temperature BBT5 Additional temperature not included BP1 Pressostat Electric components AA1 Main printed circuit board AA2 Display circuit board WF1 Modbus port GC1 Solar 0 ...

Страница 10: ...Domestic Hot Water Heat Pump Service Manual 9 4 0 Wiring diagram 4 1 PC Board and connections ...

Страница 11: ...WHP PCB These options are only available with the deluxe model DHWHP units only BLU B D L N L N 0V 0V L L 0V 0 10V Input BT3 EB1 0V 0V 0V FM BT2 BT1 0V 0V L N PE 230VAC 50Hz 0V A D 0V BLU 0 10V PWM YEL High pressure switch Compressor STOP when Pd 2 0MPa Solenoid valve Solenoid ON for 2 min before compressor starts and during system defrost BRN BLK N BLU BLK BRN BRN BLU 1 Energy Meter Communication...

Страница 12: ...witch ο ο UL1015 18AWG Open press 20 1 bar Electrical 6 Heating element ο ο Kanthal D or 0Cr23AI5 230V 1500W 7 Heater thermostat x2 ο ο El Matik KB 80 3 C Sensors 8 BBT1 Motron ο ο AHC3 782 244 65A L 400mm R25 22 00k 1 30 to 105 C 9 BBT2 Motron ο ο AHC3 782 244 65B L 900mm R25 22 00k 1 30 to 105 C 10 BBT3 Motron ο ο AHC3 782 244 65C L 2200mm R25 22 00k 1 30 to 105 C 11 BBT4 Motron ο AHC3 782 244 6...

Страница 13: ...nection QN3 Shut off valve water outlet QN4 Shut off valve water inlet QN5 Drain valve QN6 Safety valve QN7 Expansion tank QN8 Shut off valve pump inlet QN9 Shut off valve pump outlet RM3 Check valve RM4 Check valve water circulation GP1 Water circulation pump Optional additional coil Safety equipment required for the installation to be locally sourced i e safety group expansion vessel QN7 XL1 QN5...

Страница 14: ...with the DHW HP installation Example of a circulation circuit with the DHW HP installation Example of solar thermal circuit with the DHW HP installation 2 1 8 9 11 10 6 7 4 3 5 TOSHIBA 2 1 8 9 11 10 16 15 14 13 12 6 7 4 3 5 TOSHIBA 17 18 2 1 8 9 11 10 16 6 7 4 3 5 TOSHIBA 19 20 ...

Страница 15: ...n pump 4 Safety group 15 Isolation valve circulation 5 Cold water supply drain valve 16 Water circulation connection point 6 Expansion vessel 17 Solar thermal collectors 7 Cold water supply pipe connection 18 Pump expansion vessel 8 Hot water outlet pipe connection 19 Extra coil inlet 9 Temperature pressure relief valve 6 bar 90 C 20 Extra coil outlet 10 Hot water supply drain valve 21 Circulation...

Страница 16: ...r to set point using the heat pump only If the water temperature BT3 reduces by 5 C then the DHW HP will start to reheat the water temperature back to set point DHW HP starts operation on selection of AUTO mode T AUTO SP 5k DHW HP stops when BT3 T AUTO SP 53 5 C factory setting DHW HP restarts when T AUTO SP 5k DHW HP stops when BT3 T AUTO SP 53 5 C factory setting 0 10 20 30 40 50 60 70 80 00 00 ...

Страница 17: ...t using the heat pump only If the water temperature BT3 reduces by 5 C then the DHW HP will start to reheat the water temperature back to set point DHW HP starts operation on selection of ECO mode T ECO SP 5k DHW HP stops when BT3 T ECO SP 50 C factory setting DHW HP restarts when T ECO SP 5k DHW HP stops when BT3 T ECO SP 50 C factory setting 0 10 20 30 40 50 60 70 80 00 00 00 00 07 40 00 15 20 0...

Страница 18: ...ectrical heater only operation If the water temperature BT3 reduces by 5 C then the EL heater will start to reheat the water temperature back to set point The HP requires the BT3 temperature to reduce to 5 C below D33 Temp HP Max SP In this case 8 C below BOOST mode temperature set point A3 63 C NOTE A3 T BOOST set to 63 C for illustration purposes NOTE Volume of water heated by EL heater is only ...

Страница 19: ...lection required to activate or disable The legionella control remains active Code Set Point Name Description Range Factory setting D12 Backup T The temperature level at which the El heater heats the water when BACK UP mode is activated selected 0 65 35 EL starts when BBT3 T Tank t D12 BACKUP T 5 C EL stops when BBT3 T Tank t D12 BACKUP T Note Back up mode can only be deactivated after rectifying ...

Страница 20: ...HP does not start when the water heating is required The HP is OFF except during Legionella control which is still activated once a week on the selected day from D15 Legionella date The HOLIDAY mode is connected to B4 Hot on Time After the HOLIDAY period is completed the unit goes back to the previous mode of operation 0 10 20 30 40 50 60 70 80 90 00 00 00 00 00 40 00 01 20 00 02 00 00 02 40 00 03...

Страница 21: ...Standard If the PV function B5 is active this allows the electric heater and the heat pump to run outside the low tariff period OFF Standard Optimal 1 Optimal 2 OFF Low Tariff Optimal 1 This function allows the maximum exploitation of the lower electricity price during the night periods between 00 00 and 05 00 Low Tariff Optimal 2 This function allows the maximum exploitation of the lower electric...

Страница 22: ...unction B1 Ventilation the DHW HP can be set to 3 operation modes Off single speed or 2 speed To complete the ventilation mode setup B2 Ventilation Fan Speed can be set Code Set point name Description Range Factory setting B1 Ventilation OFF The fan switches off when the heat pump does not run OFF Single Speed 2Speeds OFF Single speed The fan is always running at a single fixed speed B2 Fan speed ...

Страница 23: ...in the DHWHP This excess power can be used to activate either the electrical immersion heater the heat pump HP or both PV installation 1 control signal from inverter PV installation 2 control signal from energy meter T3 Temperature Tank Top DHW AUTO mode set point of 53 C Ventilation ON Ventilation fan speed LOW Ventilation mode single speed Note This may have an impact on performance due to fan r...

Страница 24: ...ng schematic shows the electrical connections for the Solar PV operation BLU B D L N L N 0V 0V L L 0V 0 10V Input BT3 EB1 0V 0V 0V FM BT2 BT1 0V 0V L N PE 230VAC 50Hz 0V A D 0V BLU 0 10V PWM YEL High pressure switch Compressor STOP when Pd 2 0MPa Solenoid valve Solenoid ON for 2 min before compressor starts and during system defrost BRN BLK N BLU BLK BRN BRN BLU Inverter Solar PV BT4 ...

Страница 25: ... until the max allowed temperature for the heat pump operation D33 T HP Max is reached The electric heater operates only from D33 to the maximum allowable temperature D9 Water T max D20 PV min Voltage HP The minimum voltage V required to start the HP when the PV function is active 0 10 0 D21 PV min Voltage EL The minimum voltage V required to start the electric heater when the PV function is activ...

Страница 26: ...te If water set point temperature is achieved then the heat pump stops operation 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 0 10 20 30 40 50 60 70 80 90 00 00 00 00 01 20 00 02 40 00 04 00 00 05 20 00 06 40 00 08 00 00 09 20 00 10 40 00 12 00 00 13 20 00 14 40 00 16 00 00 17 20 00 18 40 00 20 00 00 21 20 00 22 40 00 24 00 00 25 20 00 26 40 00 28 00 00 29 20 00 30 40 00 32 00 00 33 20 00 34 40 00 36 00 00 ...

Страница 27: ... set from D22 PV Min Time Note If water set point temperature is achieved then the heat pump stops operation 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 0 10 20 30 40 50 60 70 80 90 00 00 00 00 01 10 00 02 20 00 03 30 00 04 40 00 05 50 00 07 00 00 08 10 00 09 20 00 10 30 00 11 40 00 12 50 00 14 00 00 15 10 00 16 20 00 17 30 00 18 40 00 19 50 00 21 00 00 22 10 00 23 20 00 24 30 00 25 40 00 26 50 00 28 00 00...

Страница 28: ...delay set from D22 PV Min Time 0 10V input decreased until 5V set from D20 PV Min Voltage HP HP stops after 5 minutes delay set from D22 PV Min Time Note If water set point temperature is achieved then the heat pump stops operation 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 0 10 20 30 40 50 60 70 80 90 00 00 00 00 01 10 00 02 20 00 03 30 00 04 40 00 05 50 00 07 00 00 08 10 00 09 20 00 10 30 00 11 40 00 12...

Страница 29: ... heated up by the solar collector activating a water pump controlled by the extra relay GP1 The setup of the solar function is carried out using the function menu and B6 Solar Code Set point name Description Range Factory setting B6 Solar The Solar function allows the water to be heated up by the solar collector activating a water pump controlled by the extra relay GP1 The pump starts when BT5 BT3...

Страница 30: ... Extra relay GP1 stops OFF ON OFF B8 Floor T The desired floor heating temperature in C with hysteresis of 1K 15 40 35 The following schematic shows the electrical connections for the underfloor heating operation ON OFF PUMP 22 21 12 29 23 30 Tank Temperature C Floor Temperature C T4 Temperature Tank Bottom Control T5 Floor Temperature Based on following set conditions Installer menu D24 Floor Set...

Страница 31: ...run until the additional temperature sensor BT5 placed in the room environment is below a certain level The water temperature can only reach the maximum temperature allowed in the tank D33 T HP max The cooling function activates a three way damper which directs the cold exhaust air to a room with cooling requirements The two functions operate the damper in opposite directions Cooling1 Cooling2 Coo...

Страница 32: ...tank Both Heat Pump and Electric heater are forced to operate SG1 ON and SG2 ON SG BOOST The heat pump operates minimizing costs only the heat pump is activated SG1 OFF SG2 ON SG ECO The unit can be stopped even if there is a need for hot water SG1 ON SG2 OFF SG BLOCK OFF 53 19 ON T Extra Temperature C Tank T C 25 21 HP Operation 20 65 53 DHW Set Point 53 OFF Aux ON T3 Temperature Tank Top T5 Temp...

Страница 33: ...Hz 0V A D 0V BLU 0 10V PWM YEL High pressure switch Compressor STOP when Pd 2 0MPa Solenoid valve Solenoid ON for 2 min before compressor starts and during system defrost BRN BLK N BLU BLK BRN BRN BLU 2 TB1 DC AC Inverter BU Energy meter E1 2 3 Electric loads WG1 Heat pump power supply GC1 Photovoltaic function input signal 0 10 VDC 0 3 VDC 4 20 mA ____ represents the cables to the switch inputs S...

Страница 34: ... fan speed id D5 Fan min speed 2 If the voltage is between 3 0 8 0V the fan speed is D4 Fan medium speed 3 If the voltage is higher than 8V the fan speed is D3 Fan max speed Ventilation max If the ventilation function is already selected a signal higher of 2V to GC1 leads to maximum air flow Start Stop If GC1 receives a signal higher than 2V the unit operation is stopped 0 20 40 60 80 100 120 11 5...

Страница 35: ... fan switches to minimum speed level from D5 When the input signal is from 3 3 to 8V the fan switches to medium speed level from D4 When the input signal is from 8 to 10V the fan switches to high speed level from D3 Humidity CO2 Sensor Human Interface Humidity CO2 Sensor Receiver Room 1 Room 2 BLU B D L N L N 0V 0V L L 0V 0 10V Input BT3 EB1 0V 0V 0V FM BT2 BT1 0V 0V L N PE 230VAC 50Hz 0V A D 0V B...

Страница 36: ...stopping the fan Before defrosting is completed the fan stops for a short period to allow the excess water in the unit to leave the unit from the condensate drain Defrosting automatically stops when the temperature of the evaporator BT2 becomes higher than the set point D10 5 5 15 25 35 45 55 65 75 85 95 00 00 00 00 05 50 00 11 40 00 17 30 00 23 20 00 29 10 00 35 00 00 40 50 00 46 40 00 52 30 00 5...

Страница 37: ...ti legionella cycle should be performed weekly Using the installer menu set up parameters D13 to D15 detailed below It is possible to select the day temperature and to enable or disable the anti legionella cycle The anti legionella cycle is activated at midnight 00 00 on the day set code D15 but the higher temperature is not activated until the next compressor start operation DHW demand condition ...

Страница 38: ... 33 20 17 54 40 18 16 00 18 37 20 18 58 40 19 20 00 19 41 20 20 02 40 20 24 00 20 45 20 21 06 40 21 28 00 21 49 20 22 10 40 22 32 00 22 53 20 23 14 40 23 36 00 23 57 20 00 18 40 00 40 00 01 01 20 01 22 40 01 44 00 02 05 20 02 26 40 02 48 00 03 09 20 03 30 40 03 52 00 04 13 20 04 34 40 04 56 00 05 17 20 05 38 40 06 00 00 06 21 20 06 42 40 07 04 00 07 25 20 07 46 40 08 08 00 08 29 20 08 50 40 09 12 ...

Страница 39: ...s not exceed 500m Description Line Spec Maximum Length m Connection Destination RS 485 connection 2 wire shielded 500m PCB WF1 Pin 1 A RS485 Pin 2 B RS485 The following schematic shows the electrical connections for the Modbus operation BLU B D L N L N 0V 0V L L 0V 0 10V Input BT3 EB1 0V 0V 0V FM BT2 BT1 0V 0V L N PE 230VAC 50Hz 0V A D 0V BLU 0 10V PWM YEL High pressure switch Compressor STOP when...

Страница 40: ...FF Note Stop bits are factory set to 1 ModBus can be accessed by means of the XB WF1 connection and by the use of the micro USB connection on the front panel located under the display surround The factory settings are displayed in the table below Parameter MODBUS Via connector X8 WF1 MODBUS via USB Modbus Mode RTU Baud rate 19200 9600 Default 19200 Data bits 8 Parity Even Odd None Default Even Sto...

Страница 41: ...s Code Parameter Format Unit Modbus Code Parameter Format Unit 3x0039 BT5 Error 1 OFF ON 3x0058 Max Fan Speed At Start Up 1 OFF ON 3x0040 HP Error 1 OFF ON 3x0059 Compressor State 1 OFF ON 3x0041 Evaporator Error 1 OFF ON 3x0060 WP_State Timer 1 Seconds 3x0042 Cold Evap Error 1 OFF ON 3x0061 Defrost Valve Off Timer 1 Seconds 3x0043 Modbus Error 1 OFF ON 3x0062 Compressor On Timer 1 Seconds 3x0044 ...

Страница 42: ... Cnt Down 1 8 2 Read write functions Modbus Code Parameter Read Write Modbus Modify Data Range Value Range Format Unit D02 4 0 D02 4 1 4x0000 P Mode 0 AUTO 1 ECO 2 BOOST 3 BACKUP 4 SILENT 5 HOLIDAY R R W 0 5 1 4x0001 D16 3 Low tariff weekday start hour 2 R R W 0 23 1 Hours 4x0002 D16 4 Low tariff weekday end hour 2 R R W 0 23 1 Hours 4x0003 D16 5 Low tariff weekday start hour 3 R R W 0 23 1 Hours ...

Страница 43: ...s parity 0 None 1 Even 2 Odd R R W 0 2 1 4x0042 D02 4 Modbus modify 0 Write Disabled R R W 0 1 1 OFF ON 4x0043 D03 Ventilation min speed R R W 0 100 1 4x0044 D05 Ventilation max speed R R W 0 100 1 4x0045 D06 AUTO speed R R W 0 100 1 4x0046 D07 Air Temperature max R R W 70 100 7 10 10 C 4x0047 D08 Air temperature min R R W 300 400 30 40 10 C 4x0048 D09 Water temperature max R R W 550 650 55 65 10 ...

Страница 44: ...9 1 Minutes 4x0083 M03 max interval defrosting R R W 0 999 1 Minutes 4x0084 M04 Admitted variation defrosting R R W 0 100 0 10 10 C 4x0085 M05 Delta T defrosting min R R W 0 100 0 10 10 C 4x0086 M06 Fan defrosting temperature R R W 50 150 5 15 10 C 4x0087 M07 Max time defrosting R R W 0 30 1 Minutes 4x0088 M08 Temperature water for max fan R R W 0 1000 0 100 10 C 4x0089 M09 Delta T heat on R R W 1...

Страница 45: ... temperature set points in menu A Temperatures Low airflow in evaporator Clean the evaporator and the air ducts Fan does not work Make sure that the fan is connected to the PCB or substitute the component SG Ready function is active Switch OFF SG Ready function Thermal safety switch FN1 opens and stops the power supply to the electric heater Restore the original conditions of the thermal safety sw...

Страница 46: ...opens when the pressure in the heating circuit is above the limit of pressure specified on the high pressure switch Er7 Err Evap The temperature sensor BT2 is above BT1 2 C for more than one hour Er8 Err C Evap The temperature BT2 is below 25 C Er9 Err H Evap The temperature BT2 is above D11 Evaporator T max Er10 Filter Replace filter The alarm is displayed on the main screen but the operation of ...

Страница 47: ...ove sensor s into correct position Is the sensor s connected to the PC board No Connect sensor s to the PC board Is the BT temperature sensor s characteristics correct Yes Check PC board and replace if defective Is the fan motor operating correctly No Yes Is the fan motor connected to the PC board No Connect fan motor to PC board Does the fan motor turn No Replace the fan motor Does the high press...

Страница 48: ...temperature is activated under the following conditions Compressor in ON BBT2 Evaporator Temperature Max D11 Evaporator temp max factory setting 30 C The control is active 10 minutes after compressor starts and is activated after 5 minutes Are the BBT1 BT2 sensors operating correctly with no defects No Complete steps from 8 4 1 Is there a lack of refrigerant Yes Yes Check for leaks Recharge with r...

Страница 49: ...oximately 30 seconds Once the power has been reset using the Up Down arrow buttons on the remote controller select the operation mode required i e AUTO mode The unit should now operate correctly The filter timer has elapsed Yes Replace or clean filters Is the fan motor operating correctly No Yes Is the fan motor connected to the PC board No Connect fan motor to PC board Does the fan motor turn No ...

Страница 50: ...tion on the unit can be accessed 1 Electric heating state ON OFF 2 Main menu Can be open by pressing 3 OK Enter 4 Mode Change with or 5 Scroll down 6 Scroll up 7 Return back 8 Information open with 9 Temperature set point 10 Heat pump operation Heat pump Ventilation Defrosting 11 Time The top part of the screen gives information about the unit operation time and temperature set point This part is ...

Страница 51: ... T BT1 T air i The air temperature at the inlet of the unit BT2 T air o The evaporator temperature at the outlet of the unit BT3 T water t The water temperature at the top of the unit BT4 T water b The water temperature at the bottom of the unit BT5 T extra The temperature measured by the additional sensor V V1 Fan The actual speed of the fan in V2 Input V The actual input signal in GC1 0 10V from...

Страница 52: ...unit does not heat the water in any way Er4 BT4 Error The temperature sensor BT4 is out of range The error Er4 is ignored and the unit runs normally Er5 BT5 Error The temperature sensor BT5 is out of range The error Er5 is ignored and the unit runs normally Er6 Err HP The pressure switch opens when the pressure in the heating circuit is above the limit of pressure specified on the high pressure sw...

Страница 53: ...The Legionella control is active in any case The unit starts when the water temperature BT3 is more than 5 C below D13 BACKUP T and it stops when this temperature is reached P5 SILENT The fan speed decreases to the minimum in order to minimize the sound emission of the unit in operation The unit starts when the water temperature BT3 is more than 5 C below BT1 T AUTO and it stops when this temperat...

Страница 54: ...n There are three ventilation level that can be selected LOW D5 Min Fan Speed MEDIUM D4 Fan medium speed HIGH D3 Max fan speed LOW MEDIUM HIGH HIGH B3 Low Tariff Standard The low tariff allows the electric heater and the heat pump to run only during periods with low electricity prices according to the menu item that regulate the program of the low tariff D17 D18 Low tariff weekday weekends The uni...

Страница 55: ...e temperature at the bottom of the tank BT4 T water b is higher than the setting menu D25 Floor T start the floor heating function is activated If the extra temperature BT5 T Extra is higher than the floor heating temperature B8 T floor the circulation pump Extra relay GP1 stops OFF ON OFF B8 Floor T The desired floor heating temperature in C with hysteresis of 1K 15 40 35 B9 Cooling The Cooling f...

Страница 56: ...x speed The maximum fan speed can be regulated This is the highest limit at which the fan can run both when the ventilation function is active and when the heat pump is in standard operation 0 100 70 D4 Fan medium speed The medium fan speed can be adjusted 0 100 50 D5 Fan min speed The minimum fan speed can be adjusted 0 100 40 D6 AUTO speed The automatic speed of the fan when the heat pump is run...

Страница 57: ... periods can be selected 0 23 0 23 0 23 0 0 0 D18 Low Tariff weekend The start and stop time of the low electricity tariff period for weekends Three periods can be selected 0 23 0 23 0 23 0 0 0 D19 Light Saving Time Light Saving Time can be deactivated OFF ON ON D20 PV min Voltage HP The minimum voltage V required to start the HP when the PV function is active 0 10 0 D21 PV min Voltage EL The mini...

Страница 58: ...directions Cooling1 Cooling2 Cooling1 Cooling 2 Cooling 1 2 If BT5 is higher than B10 T Cooling the extra relay that operates the damper GP1 switches ON OFF If BT5 is lower than B10 T Cooling the extra relay that operate the damper GP1 switches OFF ON D29 OFF Normal operation OFF Hygrostat Ventilation Max Start Stop OFF Hygrostat The fan always runs according to the input signal in GC1 0 10V from ...

Страница 59: ...ondensate drain Together with inspecting and cleaning of the fan the condensate drain shall be cleaned of dirt Pour some water in the lower half of the EPS part and check if the water flows freely If not then the drain must be cleaned 11 4 Water circulation and water tank 11 4 1 Pressure relief valve Your installer has installed a pressure relief valve near the cold water connection on the domesti...

Страница 60: ...e and the tank Anode current 0 3mA Anode is active and ok Anode current 0 3mA Anode should be checked and possibly be replaced Reconnect the wire connection between the anode and the tank Close the front cover and switch on the unit Figure 21 Anode control Please note that the water has to be heated to operational temperatures at least once before the test above can be performed In order to replac...

Страница 61: ...3 43E50002 Sensor thermo 4 43E20001 Fan Kit 5 43E57002 Heating element 6 43E3V001 Anode 7 43E0N001 Adjustable foot 8 43E4J001 Evaporator 9 43E4Q001 Tube kit 10 43E4N013 Solenoid valve coil 11 43E50003 Safety breakers 12 43E0A005 Front panel white 13 43E08001 Display with frame 14 43E0A006 Top shell white 15 43E0C001 Top cover white 16 43E11004 Evaporator housing 17 43E11005 Insulation panel ...

Страница 62: ...T20 Torx Screwdriver 1 Using the BT20 Torx screwdriver remove the screw at the base of the unit 2 A lip on the top edge of the front panel stops it from moving Lift the panel upwards and over the lip to remove 3 Disconnect the grounding cables from the top shell Disconnect the ribbon cable connector from the rear of the display The front cover is now disconnected and can be removed ...

Страница 63: ...d side of the cable entry slot Lift latch on clip lock and un hook from locking slot 2 Open the left hand side of the cabinet slowly and disconnect the earth cable from the top shell There are 3 L shaped location points around the base of the top shell Twist the top shell anti clockwise to release and lift the top shell off the DHW HP 3 To remove the top cover lift it up over the top of the fan gu...

Страница 64: ...off the cables located on the top of the evaporator housing taking note of cable location and routing Remove upper evaporator housing by lifting upwards 13 4 Replace the heating element Tools BT20 Torx Screwdriver 1 Complete step 13 1 Using the BT20 Torx screwdriver loosen the screw holding the electric heater retaining bracket Twist the retaining bracket to the side until the electric heater beco...

Страница 65: ...to remove the safety breaker Note the new safety breakers must be riveted back on to the DHW HP 13 6 Replace the anode Tools BT20 Torx Screwdriver 14mm socket 34mm socket 1 Complete step 13 1 Drain the tank so the water level is below the level of the anode Remove the foam insulation covering the anode location Using the 14mm socket remove nut retaining the grounding cable Using the 34mm socket re...

Страница 66: ... circuit pipe work Remove the insulation panel by sliding the panel out The solenoid valve coil is now easily visible and accessible Using the No 2 Philips screwdriver remove the retaining screw and lift the coil to remove The cables connect to the PC board on terminals 12 13 QN1 bottom left corner of the board This terminal has a push to fit type connector Using the terminal screwdriver push into...

Страница 67: ... To remove the fan carefully lift upwards out of the lower evaporating housing 13 9 Replace the BT1 sensor Tools BT20 Torx Screwdriver terminal screwdriver 1 Complete steps 13 1 13 2 13 3 The BBT1 sensor is located to the right hand side of the insulation panel Take note os sensor position Remove the cables from the terminal block at the top of the PC Board labelled BBT1 The connection block is a ...

Страница 68: ...oard labelled BBT2 The connection block is a push fit type using the terminal screwdriver in the slot push up and pull the cable up to remove 13 11 Replace the BT3 sensor Tools BT20 Torx Screwdriver terminal screwdriver 1 Complete step 13 1 13 2 The BBT3 sensor is located into the top pocket to the right of the electric heating element The sensor is inserted all the way in until it stops Remove th...

Страница 69: ...r is located into the lower pocket to the right of the electric heating element The sensor is inserted all the way in until it stops Remove the cables from the terminal block at the top of the PC Board labelled BBT4 The connection block is a push fit type using the terminal screwdriver in the slot push up and pull the cable up to remove Figure 1 Update to Deluxe PCB ...

Страница 70: ...sing the 8mm socket remove the compressor connection cap Take note of the compressor connections Snip the cable ties which hold the lead in place Disconnect the compressor connections and move the cable and overload protector away from compressor location Remove the insulation tape to the compressor discharge pipe and peel back away from the compressor Using the brazing equipment de braze the suct...

Страница 71: ...t of the refrigeration circuit Remove the cap and connect the reclaim equipment Remove the insulation tape to the compressor discharge pipe and peel back away from the compressor and remove insulation jacket and wiring Using the brazing equipment de braze the suction and discharge pipes from the compressor De braze pipes from the heat exchanger Remove the insulation tape and move the insulation on...

Страница 72: ...emoved by use of a BT20 Torx screwdriver 2 Complete steps 13 1 13 2 Deluxe PCB Although all cables are identified for location take note of the conductor colour for the terminal block connection The PC Board is held on to the PC board bracket using plastic mounts pinch to release The PC Board bracket can be removed by use of a BT20 Torx screwdriver 13 16 Replace the display frame Tools BT20 Torx S...

Страница 73: ......

Страница 74: ...TOSHIBA CARRIER EUROPE S A S Route de Thil 01120 Montluel France 1402410401R01 ...

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