Table of Contents
Related Manuals for Toshiba HWS-G1901CNMR-E
Summary of Contents for Toshiba HWS-G1901CNMR-E
- Page 1 FILE No. EU-SVM-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...
- Page 2 Domestic Hot Water Heat Pump Service Manual Model naming convention: Area Europe Factory TCEU Tank Type Standard Tank (45°) 180° variant tank Deluxe PCB Tank Material Enamelled Steel Coil Type Coil Extra coil Series Number Series 1 Water Tank Capacity 190l Capacity 260l Capacity Model Type...
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Page 3: Table Of Contents
Domestic Hot Water Heat Pump Service Manual Contents Safety precautions ..............Specifications. - Page 4 Domestic Hot Water Heat Pump Service Manual 11.4 Water circulation and tank ............11.4.1 Pressure relief valve .
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Page 5: Safety Precautions
Domestic Hot Water Heat Pump Service Manual Safety precautions The product shall be installed, commissioned, repaired only by qualified technicians. Incorrect installation can result in damage to property and/or injuries to people and animals. The unit shall be disconnected from the power supply when the cover is off. ... - Page 6 Domestic Hot Water Heat Pump Service Manual The electric heater is activated in case of: Failure of the heat pump operation, this requires an override command from the end user to be confirmed Too high or too low air temperature ...
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Page 7: Specifications
Domestic Hot Water Heat Pump Service Manual Specifications Physical data Domestic Hot Water Heat Pump HWS-G1901CN*R-E HWS-G2601CN*R-E HWS-G1901ENXR-E HWS-G2601ENXR-E Dimensions (Height x Diameter) 1600x620 1960x620 1600x620 1960x620 Weight (dry / wet) 91 / 281 106/356 107/297 126/376 Nominal insulation thickness Refrigerant R134A R134A... -
Page 8: Dhw-Hp Drawings
Domestic Hot Water Heat Pump Service Manual DHW-HP drawing Parameter Unit HWS-G1901***R-E HWS-G2601***R-E Dimensional Data A – Height 1610 1960 F – Diameter G – Diameter H – Max Diameter Height required for installation 1700 2040 Standard DHW-HP weight dry/wet 94 / 284 100 / 350 Additional coil DHW-HP weight dry/wet... - Page 9 Domestic Hot Water Heat Pump Service Manual Refrigerant circuit GQ1: Compressor GQ2: Fan RM1: Check valve EP1: Condenser EP2: Evaporator HZ1: Filter drier QN1: Solenoid valve QN2: Thermostatic expansion valve XL3: Service valve Water circuit XL1: Water outlet XL2: Water inlet XL4*: Coil top XL5*: Coil bottom XL6: Air outlet...
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Page 10: Wiring Diagram
Domestic Hot Water Heat Pump Service Manual Wiring diagram PC Board and connections... -
Page 11: Schematic
Domestic Hot Water Heat Pump Service Manual Schematic... -
Page 12: Key Electric Component Rating
Domestic Hot Water Heat Pump Service Manual Key electric component rating Model Component Name Type Rating Standard Deluxe Refrigeration WHP01900BUV-H8JU Winding resistance ο ο Highly compressor 4.82/6.22Ω (at 20°C) B110-160-241E Contact open: 160±10°C ο ο Case thermostat Contact Close: 70±10°C ο... -
Page 13: Refrigerant Cycle / Water System Diagram
Domestic Hot Water Heat Pump Service Manual Refrigerant cycle / water system diagram Refrigerant cycle Water system cycle XL1: Water outlet pipe connection XL2: Water inlet pipe connection XL4: Coil top* XL5: Coil bottom* XL9: Water circulation connection* QN3: Shut-off valve water outlet QN4: Shut-off valve water inlet QN5: Drain valve QN6: Safety valve**... - Page 14 Domestic Hot Water Heat Pump Service Manual Example of a standard circuit with the DHW-HP installation TOSHIBA Example of a circulation circuit with the DHW-HP installation TOSHIBA Example of solar thermal circuit with the DHW-HP installation TOSHIBA...
- Page 15 Domestic Hot Water Heat Pump Service Manual Example of underfloor heating circuit with the DHW-HP installation TOSHIBA Bath Isolation valve return flow Sink Check valve Cold water supply shut off valve Circulation pump Safety group Isolation valve circulation Cold water supply drain valve...
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Page 16: Operational Description
Domestic Hot Water Heat Pump Service Manual Operational description P1 AUTO mode This is the standard operation mode for the domestic hot water heat pump. The temperature is set from main menu, by pressing the ’OK’ button. Select ‘A Temperatures’ and then A1 AUTO to set temperature for auto mode, default set point is 53°C. -
Page 17: P2 Eco Mode
Domestic Hot Water Heat Pump Service Manual P2 ECO mode This is the standard operation mode for the domestic hot water heat pump. The temperature is set from main menu, by pressing the ’OK’ button. Select ‘A Temperatures’ and then A2 ECO to set temperature for eco mode, default set point is 50°C. -
Page 18: P3 Boost Mode
Domestic Hot Water Heat Pump Service Manual P3 BOOST mode This is the standard operation mode for the domestic hot water heat pump. The temperature is set from main menu, by pressing the ’OK’ button. Select ‘A Temperatures’ and then A2 ECO to set temperature for eco mode, default set point is 50°C. -
Page 19: P4 Backup Mode
Domestic Hot Water Heat Pump Service Manual DHW-HP starts operation on selection of BOOST mode, T BOOST <SP -5k HP stops operation at Temp HP Max SP (D33) 60°C DHW-HP continues heating water using EL only until SP (63°C) ... -
Page 20: P5 Silent Mode
Domestic Hot Water Heat Pump Service Manual P5 SILENT mode This mode decreases the fan speed to D5 (Min fan speed) in order to minimize the sound emissions The DHW-HP is controlled by the A1 AUTO operation mode The unit starts when BBT3 (T Tank t) < A1 (T AUTO) -5°C The unit stops when BBT3 (T Tank t) = A1 (T AUTO) ... -
Page 21: B4 Hot On Time
Domestic Hot Water Heat Pump Service Manual B4 Hot on time The unit can be programmed to deliver hot water from 1 to 30 days from the moment in which the function is activated and the HOLIDAY mode is selected. The unit switches to A1 AUTO mode after the desired number of days is reached. -
Page 22: B1 Ventilation
Domestic Hot Water Heat Pump Service Manual Heat pump operation (Optimal 1 and Optimal 2) If the water temperature is below set point temperature minus hysteresis, the HP starts its operation (normally at 00:00). Optimal 1: The HP is allowed to run also during the day(according to MODE of operation ... -
Page 23: B5 Photovoltaic
Domestic Hot Water Heat Pump Service Manual Single Speed Operation 2 Speed Operation Auto Auto T3:Temperature Tank Top T3:Temperature Tank Top DHW AUTO mode set point of 53°C DHW AUTO mode set point of 53°C Ventilation ON Ventilation ON Ventilation fan speed LOW Ventilation fan speed LOW Ventilation mode single speed Note: This may have an impact on performance due to fan reduction in DHW mode... - Page 24 Domestic Hot Water Heat Pump Service Manual A graph to convert the signal input to % is available in figure 21 Conversion table of the controller input signal to percentage The following schematic shows the electrical connections for the Solar PV operation Solar Inverter Solenoid valve.
- Page 25 Domestic Hot Water Heat Pump Service Manual PV operation is set up using a combination of the following functions: Set point Factory Code Description Range name setting The PV function is not active. If this function is activated, the heat pump and the electric heater can start only if the input voltage in GC1 (0-10V) is higher than D20/D21 (PV min Voltage HP/EL) for longer than D22 (PV min time).
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Page 26: Pv Eco Operation In Auto Mode
Domestic Hot Water Heat Pump Service Manual 7.10.1 PV ECO operation in AUTO mode When the photovoltaic mode is set to PV ECO and the DHW-HP mode is set to AUTO, there is no operation of the electrical heater, even if the 0~10V input rises above the D21 (PV Min Voltage EL) set point. -
Page 27: Pv Eco Operation In Boost Mode
Domestic Hot Water Heat Pump Service Manual 7.10.2 PV ECO operation in BOOST mode When the photovoltaic mode is set to PV ECO and the DHW-HP mode is set to BOOST, there is no operation of the electrical heater, even if the 0~10V input rises above the D21 (PV Min Voltage EL) set point. -
Page 28: Pv Storage Operation In Boost Mode
Domestic Hot Water Heat Pump Service Manual 7.10.3 PV Storage operation in BOOST mode When the photovoltaic mode is set to PV STORAGE and the DHW-HP mode is set to BOOST, the HP operates when the 0~10V input rises above the D20 (PV Min Voltage HP) and the electrical heater operates when the 0~10V input rises above the D21 (PV Min Voltage EL) set point. -
Page 29: D26 Extra Function
Domestic Hot Water Heat Pump Service Manual 7.11 D26 Extra Function (Only available with the deluxe DHW-HP) There are 3 additional modes available for the Deluxe model DHW-HP, solar, floor heating and cooling functions. These are activated from D26 Extra Function accessed within the Installer menu. -
Page 30: B7 Floor / B8 Floor T
Domestic Hot Water Heat Pump Service Manual 7.11.02 B7 Floor / B8 Floor T The floor heating function activates an external circulation pump, controlled by the extra relay (GP1) The setup of the floor heating function is carried out using the function menu and B7 (Floor) & B8 (Floor T) Factory Set point... -
Page 31: B9 Cooling / Cooling T
Domestic Hot Water Heat Pump Service Manual 7.11.03 B9 Cooling / B10 Cooling T 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. The Cooling function allows an area to be cooled up by the DHW-HP exhaust air, activating a damper motor controlled by the extra relay (GP1). -
Page 32: D27 Sg Ready
Domestic Hot Water Heat Pump Service Manual Set Point HP Operation <53 >53 T3:Temperature Tank Top T5: Temperature Extra (Room) Cooling Type 1 Cooling temperature set point 20°C Note: If DHW temperature is greater than Auto set point (>53°C) then HP OFF when Cool satisfied If cooling demand during this time then HP start at 65°C set point CAUTION: DHW temperature could be hot 60°C DHW AUTO mode set point of 53°C... - Page 33 (0-10 VDC 0- 3 VDC, 4-20 mA). ____: represents the cables to the switch inputs SG1 & TOSHIBA BU - Smart Grid Energy Meter From the Grid The following schematic shows the electrical connections for the SG Ready operation...
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Page 34: D29 External Control
Domestic Hot Water Heat Pump Service Manual SG1 Boost SG1 Eco SG Block SG Off SG2 On SG2 Off SG1 On SG1 Off EL On EL Off HP On HP Off T3 T water top R4 HP R5 El Heater SG1 input... - Page 35 Domestic Hot Water Heat Pump Service Manual Hygrostat Function – fan speed control The air flow is automatically adjusted depending on the ambient air conditions or by manual adjustments. The fan constantly runs changing the speed level depending on the 0~10V input signal from external humidity sensors, CO sensors or human interface panel: ...
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Page 36: Defrost Operation
Domestic Hot Water Heat Pump Service Manual 7.14 Defrost operation When the evaporation temperature (BT2) falls below 0°C, the evaporator starts to accumulate ice on its fins. In order to maintain the unit reliability and performance, an automatic defrosting operation is activated. Defrosting can occur between 60 minutes and 120 minutes from the last defrosting or from the last moment in which the evaporation temperature was above 0°C. -
Page 37: Legionella Operation
Domestic Hot Water Heat Pump Service Manual System start up with BT1 (Air Inlet Temp) at 3°C After 60 minute operation the defrost countdown timer is activated After a further 60 minutes, the DHW-HP enters defrost operation The solenoid valve opens and because the BT1 temperature is <4°C the compressor stays on and the fan stops operation ... - Page 38 Domestic Hot Water Heat Pump Service Manual Legionella On Legionella On Legionella Off Legionella Off R4 Comp On R4 Comp On R4 Comp Off R4 Comp Off R3 Fan On R3 Fan On R3 Fan Off R3 Fan Off T3 T water top R3 Fan R4 HP Legionella State...
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Page 39: Modbus
Service Manual Modbus As standard the Toshiba Domestic Hot Water Heat Pump units are supplied with a ModBus controller. The controller provides a secondary port to be connected to a system network thanks to an RS485 bus. The controller has the ability to communicate without an amplifier. The length of the bus does not exceed 500m. - Page 40 Domestic Hot Water Heat Pump Service Manual ModBus should be set form the installer menu D2, see the table below: Set point Code Description Range Factory setting name D2.1 The Modbus address can be selected 1 ~ 247 Address between 1 and 247 D2.2 The Modbus baud rate can be selected 9600 ~ 19200...
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Page 41: Monitoring Functions
Domestic Hot Water Heat Pump Service Manual 8.1 Monitoring Functions Modbus Modbus Parameter Format Unit Parameter Format Unit Code Code 3x0000 ADC value CH2 3x0021 R3 Fan OFF/ON 3x0001 ADC value CH3 3x0022 R4 HP OFF/ON 3x0002 ADC value CH4 3x0023 R5 El Heater OFF/ON... -
Page 42: Read & Write Functions
Domestic Hot Water Heat Pump Service Manual Modbus Modbus Parameter Format Unit Parameter Format Unit Code Code 3x0077 Back Up Mode On Time_sec Seconds 3x0096 Optimal Release HP OFF/ON 3x0078 Filter On Time_sec Seconds 3x0097 Optimal EL ON OFF/ON 3x0079 Defrost Run Out Cnt Seconds 3x0098... - Page 43 Domestic Hot Water Heat Pump Service Manual Read / Write Modbus Data Value Modbus Modify Parameter Format Unit Code Range Range D02.4 = 0 D02.4 = 1 4x0019 B07 Floor (1 = ON) 0 ~ 1 OFF/ON 4x0020 B08 Floor temperature 50 ~ 500 5 ~ 50 °C...
- Page 44 Domestic Hot Water Heat Pump Service Manual Read / Write Data Value Modbus Modbus Modify Parameter Format Unit Range Range Code D02.4 = 0 D02.4 = 1 4x0064 D22 PV min time 1 ~ 120 Minutes 4x0065 D23 Solar temperature max 550 ~ 890 55 ~ 89 °C...
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Page 45: Method Of Defect Analysis
Domestic Hot Water Heat Pump Service Manual Method of defect analysis Matters to be confirmed first In addition check out the following questions before contacting an installer • Is the cold water supply open? • Has the periodic cleaning of evaporator, condensation drain and fan as described in the maintenance section been followed? •... -
Page 46: In The Event Of Error - How To Operate Back-Up Mode
Domestic Hot Water Heat Pump Service Manual In the event of an error – how to operate BACK-UP mode In the event of an error occurring it is possible to produce domestic hot water by operating the DHW-HP in Back-Up mode, for more information see section 7.4. If Yes is selected the unit operates at the lower set point set by D12 (BACK-UP Temp) Note: The Back-up mode uses the electric heater only to heat a smaller volume of water to set point. -
Page 47: Er1 ~ Er5 - Temperature Sensor Error Analysis
Domestic Hot Water Heat Pump Service Manual 9.4.1 Er1 ~ Er5 – Temperature sensor error analysis Temperature sensor errors occur if: The measured temperature is < -29 or >129 If the sensor is disconnected form the PCB, the measured value will be -30, so an error will occur. The DHWHP operation is interrupted and the error is displayed only for BBT1, BBT2 and BBT3. -
Page 48: Er Evap - Evaporator Temperature Error Analysis
Domestic Hot Water Heat Pump Service Manual 9.4.3 Er Evap – Evaporator temperature error analysis Er Evap is activated in the case of a possible leak in refrigerant; the control is activated if: BBT2>BBT1 -2k The compressor is ON The duration of the temperature difference is longer than one hour. Are the BBT1 &... -
Page 49: Er C Evap - Low Evaporator Temperature Error Analysis
Domestic Hot Water Heat Pump Service Manual 9.4.5 Er C Evap – Low evaporator temperature error analysis The Low evaporation temperature error occurs if: -29 < BBT2 < -25 Is the fan motor Connect fan motor connected to to PC board the PC board? Is the fan Is the fan motor operating... -
Page 50: Dhwhp Settings
Domestic Hot Water Heat Pump Service Manual 10.0 DHW-HP settings 10.1 Home view The unit can be controlled from the control panel described in Figure 17. From the home view, all the main operational modes, functions, set points and information on the unit can be accessed. -
Page 51: Information Menu
Domestic Hot Water Heat Pump Service Manual The bottom part of the screen is active, meaning that the icon on the screen contains other menu items. This part is divided in three menus: INFORMATION MENU (8), that can be accessed by pressing ( ... -
Page 52: Mode Of Operation
Domestic Hot Water Heat Pump Service Manual Class Code Menu Item Description The total calculated hot water production is displayed in MWh th MWh since last Reset All The electricity consumption of the electric resistance in EL MWh MWh since last Reset All Extra The operation of the extra relay, for example for the operation of a circulation pump... -
Page 53: Temperatures
Domestic Hot Water Heat Pump Service Manual Code Set point name Description The heat pump heats the water when required, normally using the heat pump operation. The unit starts when the water temperature BT3 is more than 5°C below A1 (T AUTO) and AUTO it stops when this temperature is reached. -
Page 54: Functions
Domestic Hot Water Heat Pump Service Manual 10.1.4 Functions The functions are similar to the modes of operation but they cannot be accessed directly from the home view and they can vary from unit to unit In addition, since SOLAR, FLOOR and COOLING (called extra functions) cannot be used simultaneously, the choice of these functions should be made from the Installer menu (D26 Extra function). -
Page 55: General
Domestic Hot Water Heat Pump Service Manual Set point Factory Code Description Range name setting The PV function is not active. If this function is activated, the heat pump and the electric heater can start only if the input voltage in GC1 (0-10V) is higher than D20/D21 (PV min Voltage HP/EL) for longer than D22 (PV min time). -
Page 56: Installer
Domestic Hot Water Heat Pump Service Manual 10.1.6 Installer The installer menu should be accessed only by qualified personnel. Some of the set points that can be regulated from this menu can have large effects on the unit performance depending on the type of commissioning and installation. - Page 57 Domestic Hot Water Heat Pump Service Manual Set point Description Factory Code Range setting name The water temperature at which the unit stops the backup mode with only BACK- 0-65 the electric heater. UP Temp The legionella function can be activated. The legionella function does not switch the heat pump on, but just continues the heat up cycle to a higher Legionella temperature D14 (Legionella T).
- Page 58 Domestic Hot Water Heat Pump Service Manual Description Factory Set point Code Range setting name The SG ready function can be activated by the installer here. Three possible modes can be selected. This function allows the start of the heat pump from an external access (See QA1 in Figure 16).
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Page 59: Periodic Inspection Items
Domestic Hot Water Heat Pump Service Manual 11.0 Periodic inspection items Please observe local rules and regulations regarding potential periodical inspections of the domestic hot water heat pump by skilled personnel. 11.1 Environmental requirements When repairing or dismantling the domestic hot water heat pump please follow the environmental regulations and legal requirements in relation to the recycling and disposal of materials. -
Page 60: Anode
Domestic Hot Water Heat Pump Service Manual 11.4.2 Anode In order to prevent corrosion of the enamelled hot water tank, a magnesium anode is installed behind the front panel at the top half of the water tank. The anode has a life expectancy of approximately 2-5 years depending on the water quality. It is recommended to inspect the anode every year. -
Page 61: Part Exploded View, Part List
Domestic Hot Water Heat Pump Service Manual 12.0 Part exploded view, parts list Part Description Number 43E41001 Compressor 43E6V002 PCB Board standard 43E6V003 PCB Board deluxe 43E50002 Sensor, thermo 43E20001 Fan Kit 43E57002 Heating element 43E3V001 Anode 43E0N001 Adjustable foot 43E4J001 Evaporator 43E4Q001... -
Page 62: Open & Remove The Front Panel
Domestic Hot Water Heat Pump Service Manual 13.0 Replacement of parts Warning: Turn off power supply before removing or replacing any parts 13.1 Open & remove the front panel Tools: BT20 Torx Screwdriver Using the BT20 Torx screwdriver remove the screw at the base of the unit. -
Page 63: Remove The Top Shell & Top Cover
Domestic Hot Water Heat Pump Service Manual 13.2 Remove the top shell & top cover Tools: BT20 Torx Screwdriver Complete step 13.1 Using the BT20 Torx screwdriver, remove the screw on the lower left hand side of the cable entry slot. -
Page 64: Remove The Evaporator Housing Top
Domestic Hot Water Heat Pump Service Manual 13.3 Remove the evaporator housing Tools: BT20 Torx Screwdriver Complete steps 13.1 & 13.2 There are 6 spring clips holding the upper evaporator housing to the lower half of the housing. -
Page 65: Replace The Safety Breakers
Domestic Hot Water Heat Pump Service Manual 13.5 Replace the safety breakers Tools: BT20 Torx Screwdriver , drill, rivet gun Complete step 13.1 Remove the cables to the safety breaker(s). Using the drill: gently drill the rivets to remove the safety breaker. -
Page 66: Replace The Solenoid Valve, Coil
Domestic Hot Water Heat Pump Service Manual 13.7 Replace the solenoid valve, coil Tools: BT20 Torx Screwdriver , No.2 Philips screwdriver, terminal screwdriver Complete steps 13.1 & 13.2 The solenoid coil is located at the rear of the unit behind the refrigeration circuit pipe work ... -
Page 67: Replace The Fan Kit
Domestic Hot Water Heat Pump Service Manual 13.8 Replace the fan kit Tools: BT20 Torx Screwdriver Complete steps 13.1, 13.2 & 13.3 The fan assembly is located to the rear right of the DHW-HP Disconnect the 2 cables and plugs from the PC Board, GQ2 (X2 &... -
Page 68: Replace The Bt2 Sensor
Domestic Hot Water Heat Pump Service Manual 13.10 Replace the BT2 sensor Tools: BT20 Torx Screwdriver , terminal screwdriver Complete steps 13.1, 13.2 & 13.3 The BBT2 sensor is located into the heat exchanger at the front of the DHW-HP. -
Page 69: Replace The Bt4 Sensor
Domestic Hot Water Heat Pump Service Manual 13.12 Replace the BT4 sensor Tools: BT20 Torx Screwdriver , terminal screwdriver Complete steps 13.1 & 13.2 The BBT4 sensor is located into the lower pocket to the right of the electric heating element. -
Page 70: Replace The Compressor
Domestic Hot Water Heat Pump Service Manual 13.13 Replace the compressor Tools: BT20 Torx Screwdriver , 8mm socket, reclaim equipment, brazing equipment Complete steps 13.1, 13.2 & 13.3 The compressor is located at the rear of the DHW-HP The service port is located to the right of the refrigeration... -
Page 71: Replace The Tube Kit
Domestic Hot Water Heat Pump Service Manual 13.14 Replace the tube kit Tools: BT20 Torx Screwdriver , 8mm socket, reclaim equipment, brazing equipment Complete steps 13.1, 13.2 & 13.3 The tube kit is located at the rear of the DHW-HP ... -
Page 72: Replace The Pcb Board Standard & Deluxe
Domestic Hot Water Heat Pump Service Manual 13.15 Replace the PCB board, Standard (1.) & Deluxe (2.) Tools: BT20 Torx Screwdriver , terminal screwdriver Complete steps 13.1 & 13.2, Std PCB Although all cables are identified for location, take note of the conductor colour for the terminal block... - Page 74 TOSHIBA CARRIER EUROPE S.A.S Route de Thil 01120 Montluel France 1402410401R01...