Toshiba HWT-601XWHM3W-ETR Service Manual
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Toshiba HWT-601XWHM3W-ETR Service Manual

Air to water heat pump
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AIR TO WATER HEAT PUMP
Service Manual
Model name:
Hydro unit
-Wall Mounted Type-
HWT-601XWHM3W-E(TR)
HWT-601XWHT6W-E(TR)
HWT-1101XWHM3W-E(TR)
HWT-1101XWHT6W-E(TR)
HWT-1101XWHT9W-E(TR)
Outdoor unit
HWT-401HW-E(TR)
HWT-601HW-E(TR)
HWT-801HW-E(TR)
HWT-1101HW-E(TR)
HWT-801HRW-E
HWT-1101HRW-E
FILE No. AE0-2101W

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Summary of Contents for Toshiba HWT-601XWHM3W-ETR

  • Page 1 FILE No. AE0-2101W AIR TO WATER HEAT PUMP Service Manual Model name: Hydro unit Outdoor unit -Wall Mounted Type- HWT-601XWHM3W-E(TR) HWT-401HW-E(TR) HWT-601XWHT6W-E(TR) HWT-601HW-E(TR) HWT-1101XWHM3W-E(TR) HWT-801HW-E(TR) HWT-1101XWHT6W-E(TR) HWT-1101HW-E(TR) HWT-1101XWHT9W-E(TR) HWT-801HRW-E HWT-1101HRW-E...

  • Page 2: Table Of Contents

    Contents 1 Specifications ............18 2 Construction views (External views) .
  • Page 3 6-7.Charging additional refrigerant ........... . 49 6-7-1.[Assumed gas leak] .
  • Page 4 Air to Water Heat Pump made by Toshiba Carrier Air- conditioning Europe Sp. z o.o. or, alternatively, he or she has been instructed in such matters by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to this work.
  • Page 5 Definition of protective gear When the Air to Water Heat Pump is to be transported, installed, maintained, repaired or removed, wear protective gloves and “safety” work clothing. In addition to such normal protective gear, wear the protective gear described below when undertaking the special work detailed in the table below.
  • Page 6 The unit and this service guide list very important safety precautions. Understand the following details (indications and symbols) before reading the body text, and follow the instructions. The important contents concerned to the safety are described on the product itself and on this Service Manual. Please read this Service Manual after understanding the described items thoroughly in the following contents (Indications / Illustrated marks), and keep them.
  • Page 7 Warning indications on the Air to Water Heat Pump [Confirmation of warning label on the main unit] Confirm that labels are indicated on the specified positions If removing the label during parts replace, stick it as the original. This mark is for R32 refrigerant only. Refrigerant type is written on nameplate of Outdoor Unit.
  • Page 8 Precaution for safety The appliance shall be installed in accordance with national wiring regulations. Capacity shortages of the power circuit or an incomplete installation may cause an electric shock or fire. DANGER Before carrying out the installation, maintenance, repair or removal work, be sure to set the circuit breaker to the OFF position.
  • Page 9 WARNING Before starting to repair the Air to Water Heat Pump, read carefully through the Service Manual, and repair the Air to Water Heat Pump by following its instructions. Only qualified service person (*1) is allowed to repair the Air to Water Heat Pump. Repair of the Air to Water Heat Pump by unqualified person may give rise to a fire, electric shocks, injury, water leaks and/or other problems.
  • Page 10 WARNING If, in the course of carrying out repairs, it becomes absolutely necessary to check out the electrical parts with the electrical parts box cover of one or more of the indoor units and the service panel of the outdoor unit removed in order to find out exactly where the trouble lies, wear insulated heat-resistant gloves, insulated boots and insulated work overalls, and take care to avoid touching any live parts.
  • Page 11 WARNING The refrigerant used by this Air to Water Heat Pump is the R32. Check the used refrigerant name and use tools and materials of the parts which match with it. For the products which use R32 refrigerant, the refrigerant name is indicated at a position on the outdoor unit where is easy to see.
  • Page 12 WARNING When the refrigerant gas leaks, find out the leaked position and repair it surely. If the leaked position cannot be found out and the repair work is interrupted, pump-down and tighten the service valve, otherwise the refrigerant gas may leak into the room. When gas touches to fire such as fan heater, stove or cocking stove, it may generate noxious gases, causing a fire though the refrigerant gas itself is innocuous.
  • Page 13 WARNING Only a qualified installer (*1) or qualified service person (*1) is allowed to install the Air to Water Heat Pump. If the Air to Water Heat Pump is installed by an unqualified individual, a fire, electric shocks, injury, water leakage, noise and/or vibration may result.
  • Page 14 Explanations given to user • If you have discovered that the fan grille is damaged, do not approach the outdoor unit but set the circuit breaker to the OFF position, and contact a qualified service person to have the repairs done. Do not set the circuit breaker to the ON position until the repairs are completed.
  • Page 15 Refrigerant R32 This Air to Water Heat Pump adopts a new HFC type refrigerant (R32) which does not deplete the ozone layer. (1) Safety caution concerned to refrigerant R32 Be sure that water, dust, the former refrigerant or the former refrigerating oil is not mixed into the refrigerating cycle of the Air to Water Heat Pump with refrigerant R32 during installation work or service work.
  • Page 16 (13) During repairs to sealed components, all electrical supplies shall be disconnected from the equipment being worked upon prior to any removal of sealed covers, etc. If it is absolutely necessary to have an electrical supply to equipment during servicing, then a permanently operating form of leak detection shall be located at the most critical point to warn of a potentially hazardous situation.
  • Page 17 (3) Pipe materials For the refrigerant pipes, copper pipe and joints are mainly used. It is necessary to select the most appropriate pipes to conform to the standard. Use clean pipes or joints to which little impurities adhere. (1) Copper pipe <Piping>...
  • Page 18 (4) Tools : R410A tools available, : Partly unavailable, : R410A tools unavailable Installation / service tools Applicability to R32 Air to Applicability to R22 Air to Water Heat Pump or not Water Heat Pump or not Tools / Equipment specification 1 Flare tool Clutch type...

  • Page 19: Specifications

    Specifications Unit name Hydro unit HWT-601XWHM3W-E, HWT-601XWHT6W-E Outdoor unit HWT-401HW-E HWT-601HW-E Heating capacity *1 (kW) Cooling capacity *2 (kW) Variable range of compressor frequency 10 - 80 Hz 10 - 100 Hz Power source 1 phase 50 Hz 220-240 V Operation mode Heating Cooling...
  • Page 20 Unit name Hydro unit HWT-1101XWHM3W-E, HWT-1101XWHT6W-E, HWT-1101XWHT9W-E Outdoor unit HWT-801H(R)W-E HWT-1101H(R)W-E Heating capacity *1 (kW) 11.0 Cooling capacity *2 (kW) Variable range of compressor frequency 10 - 90 Hz 10 - 100 Hz Power source 1 phase 50 Hz 220-240 V Operation mode Heating Cooling...

  • Page 21: Construction Views (External Views)

    Construction views (External views) 2-1. Hydro unit HWT-601XWHM3W-E, HWT-601XWHT6W-E HWT-1101XWHM3W-E, HWT-1101XWHT6W-E, HWT-1101XWHT9W-E Details of A Anchor bolt pitch Manometer Remote controller Drain nipple Hot water outlet connecting pipe R1 Refrigerant pipe connecting port Ø6.4 Water inlet connecting pipe R1 (Unit: mm) (Liquid side) Refrigerant pipe connecting port A...

  • Page 22: 2-2.Outdoor Unit

    2-2. Outdoor unit HWT-401HW-E, HWT-601HW-E...
  • Page 23 HWT-801HW-E, HWT-1101HW-E HWT-801HRW-E, HWT-1101HRW-E...

  • Page 24: 2-3.Hot Water Cylinder

    2-3. Hot water cylinder HWS-2101CSHM3-E(-UK) HWS-3001CSHM3-E(-UK) Specification for UK only Specification for UK only HWS-1501CSHM3-E(-UK) Specification for UK only...

  • Page 25: Refrigeration Cycle / Water System Diagram

    Refrigeration cycle / Water system diagram 3-1. Water system diagram...
  • Page 26 Installation example of water circuit The water flowing for a system without buffer tank ((1), (2), (3), (5)) requires13 /min (1101XWH), 10 /min (601XWH) or more. This water flowing requires 5 or more branches of Floor heating or Radiator etc. Less than 5 branches may cause a flow deficiency.

  • Page 27: 3-2.Refrigeration Cycle System Diagram

    3-2. Refrigeration cycle system diagram HWT-601XWHM3W-E, HWT-601XWHT6W-E HWT-401HW-E, HWT-601HW-E Outdoor unit Hydro unit Heating / Hot water supply Defrosting / Cooling Expansion vessel pressure High-pressure switch sensor Air vent valve Overpressure 4-way valve preventive Plate-type valve water heat Compressor exchanger Flow sensor Outdoor heat exchanger Backup...

  • Page 28: Wiring Diagram

    Wiring diagram 4-1. Hydro unit...

  • Page 29: 4-2.Outdoor Unit

    4-2. Outdoor unit HWT-401HW-E, HWT-601HW-E...
  • Page 30 HWT-801HW-E, HWT-801HRW-E HWT-1101HW-E, HWT-1101HRW-E...

  • Page 31: 4-3.Hot Water Cylinder Unit

    4-3. Hot water cylinder unit Double pole thermal cut out Blue Blue Green / Brown Yellow Brown TB03 (230 V) TB06 (TTW) TTW sensor Hot water cylinder heater Supply 220 - 240 V from hydro unit To hydro unit Cable size 1.5 mm (minimum)

  • Page 32: Key Electric Component Rating

    Key electric component rating 5-1. Hydro unit HWT-601XWHM3W-E, HWT-601XWHT6W-E Model name Component name Type name Rating M3W-E T6W-E Circulation pump UPM 3K 15-75 130 AC230 V 0.58 A (MAX) Backup heater 3 kW 80176-1 AC230 V 3 kW Backup heater 6 kW 80177-1 AC400 V (3N) 6 kW Backup heater 9 kW...
  • Page 33 HWT-1101XWHM3W-E, HWT-1101XWHT6W-E, HWT-1101XWHT9W-E Model name Component name Type name Rating M3W-E T6W-E T9W-E Circulation pump UPM 3K 15-75 130 AC230 V 0.58 A (MAX) Backup heater 3 kW 80176-1 AC230 V 3 kW Backup heater 6 kW 80177-1 AC400 V (3N) 6 kW Backup heater 9 kW 80178-1 AC400 V (3N) 9 kW...

  • Page 34: 5-2.Outdoor Unit

    5-2. Outdoor unit HWT-401HW-E, HWT-601HW-E Component name Type name Rating Compressor DX150A1T-21F Outdoor fan motor ICF-140-A43-1 Output 43 W Reactor CH-102 18 mH, 16 A 4-way valve coil DXQ-1233 DC12 V Pulse motor valve (PMV) coil PQ-M10012-000313 DC12 V Compressor case thermostat US-622KXTMQO-SS OFF = 125 ±...

  • Page 35: 5-3.Hot Water Cylinder Unit

    5-3. Hot water cylinder unit Model name 1501 2101 3001 Component name Type name Rating M3-E M3-E M3-E (-UK) (-UK) (-UK) Hot water cylinder heater – AC230 V 2.7 kW Hot water cylinder temperature 10 kΩ (25°C) sensor – (TTW sensor) Thermal cut-out Operating temperature –...

  • Page 36: 5-4.Water Heat Exchange Control Board

    5-4. Water heat exchange control board HWT-601XWHM3W-E, HWT-601XWHT6W-E HWT-1101XWHM3W-E, HWT-1101XWHT6W-E, HWT-1101XWHT9W-E MCC-1753 (main) THO sensor TWO sensor CN602 CN600 Connector for TC sensor Back up heater thermostat MCC-1755 (CN03) CN601 CN611 CN603 Connector for Water flow sensor MCC-1755 (CN03) CN609 Connector for CN605 Low pressure sensor...
  • Page 37 MCC-1755 (sub) Connector for MCC-1753 (CN700 ~ 703) CN04 Mixing valve Connector for Connector for Connector for Built-in MCC-1753 (CN711) MCC-1753 (CN707) MCC-1753 (CN303) circulation pump CN08 CN02 CN06 CN07 Connector for 3-way valve MCC-1753 (CN603, 605) CN03 External pump AC power supply CN01 External input...

  • Page 38: 5-5.Outdoor Control Board

    5-5. Outdoor control board HWT-401HW-E, HWT-601HW-E MCC-1768 Lead wire compressor motor Connector for MCC-1646 CN807 FAN motor CN300 TE sensor CN600 CN700 TD sensor CN601 TL sensor CN604 Earth lead wire TS sensor 4-way valve CN603 CN704 TO sensor Thermostat for CN602 compressor High-pressure...
  • Page 39 HWT-801H(R)W-E, HWT-1101H(R)W-E MCC-1675 (Interface CDB) 2-way valve INJ Heater output CN707 CN709 Connector for TB2 (to hydro unit) CN01 Connector for MCC-1705 (CN20, 22) CN02 PD sensor CN607 PMV1 CN710 Connector for MCC-1705 (CN805) CN805 PMV2 CN711 Connector for MCC-1646 CN807 4-way valve TS sensor...
  • Page 40 MCC-1705 (Compressor, Fan IPDU) Connector for FAN motor MCC-1675 (CN805) Compressor CN300 CN805 Case thermostat CN609 High-pressure switch CN690 Lead wire for power supply P01 (RED), P02 (WHI) Lead wire for Hydro unit P11 (RED), P12 (WHI) Lead wire for Lead wire for Fasten for MCC-1675 (CN02) compressor motor...

  • Page 41: Refrigerant (R32)

    Refrigerant (R32) This Air to Water Heat Pump adopts the R32 refrigerant which does not damage the ozone layer. The working pressure of the new refrigerant R32 is 1.6 times higher than conventional refrigerant (R22). The refrigerating oil is also changed in accordance with change of refrigerant, so be careful that water, dust, and existing refrigerant or refrigerating oil are not entered in the refrigerant cycle of the Air to Water Heat Pump using the new refrigerant during installation work or servicing time.

  • Page 42: 6-2.Refrigerant Piping Installation

    6-2. Refrigerant piping installation 6-2-1. Piping materials and joints used For the refrigerant piping installation, copper pipes and joints are mainly used. Copper pipes and joints suitable for the refrigerant must be chosen and installed. Furthermore, it is necessary to use clean copper pipes and joints whose interior surfaces are less affected by contaminants.

  • Page 43: 6-2-2.Processing Of Piping Materials

    6-2-2. Processing of piping materials When performing the refrigerant piping installation, care should be taken to ensure that water or dust does not enter the pipe interior, that no other oil other than lubricating oils used in the installed Air to Water Heat Pump is used, and that refrigerant does not leak.

  • Page 44: 6-3.Tools

    (2) Flare connecting procedures and precautions a) Make sure that the flare and union portions do not have any scar or dust, etc. b) Correctly align the processed flare surface with the union axis. c) Tighten the flare with designated torque by means of a torque wrench. The tightening torque for R410A or R32 is the same as that for conventional R22.

  • Page 45: 6-4.Recharging Of Refrigerant

    6-4. Recharging of refrigerant When it is necessary to recharge refrigerant, charge the specified amount of new refrigerant according to the following steps. Recover the refrigerant, and check no refrigerant remains in the equipment. When the compound gauge’s pointer has indicated –0.1 MPa (–76 cmHg), place the handle Low in the fully closed position, and turn off the vacuum pump’s Connect the charge hose to packed valve service...

  • Page 46: 6-5.Brazing Of Pipes

    NOTE (1) Be sure to make setting so that liquid can be charged. (2) When using a cylinder equipped with a siphon, liquid can be charged without turning it upside down. R32 refrigerant is a Single-component refrigerant that does not change its composition. Although it is possible to charge the refrigerant with either liquid or gas, charge it with liquid.

  • Page 47: 6-5-2.Flux

    6-5-2. Flux 6-5-3. Brazing As brazing work requires sophisticated techniques, (1) Reason why flux is necessary experiences based upon a theoretical knowledge, it • By removing the oxide film and any foreign matter on must be performed by a person qualified. the metal surface, it assists the flow of brazing filler.

  • Page 48: 6-6.Instructions For Re-Use Piping Of R22 Or R407C

    6-6. Instructions for re-use piping of R22 or R407C Instruction of works: (3) The pipes are left as coming out or gas leaks. (Poor refrigerant) The existing R22 and R407C piping can be reused for our Air to Water Heat Pump R32 products •...

  • Page 49: 6-6-3.Branching Pipe For Simultaneous Operation System

    • Otherwise rust may generate when moisture or foreign matter due to dewing enters in the pipes. In the concurrent twin system, when TOSHIBA- specified branching pipe is used, it can be reused. • The rust cannot be removed by cleaning, and a new piping work is necessary.

  • Page 50: 6-6-6.Handling Of Existing Pipe

    6-7. Charging additional 6-6-6. Handling of existing pipe refrigerant When using the existing pipe, carefully check it for the following: • Wall thickness (within the specified range) Amount of additional refrigerant shall be restricted by the following explanation to ensure the reliability. •...

  • Page 51: 6-8.General Safety Precautions For Using R32 Refrigerant

    6-8. General safety precautions for using R32 refrigerant 6-8-1. Recovery 6-8-2. Decommissioning • When removing refrigerant from a system, either for • Before carrying out this procedure, it is essential that servicing or decommissioning, it is recommended the technician is completely familiar with the good practice that all refrigerants are removed equipment and all its details.

  • Page 52: Operational Description

    Operational description This chapter describes the working circuit and control of Air to Water Heat Pump about the following operations. Item Page 7-1. Basic Operation 1) Operation control 2) Hot water supply operation 52 to 54 3) Heating operation 4) Cooling operation 7-2.
  • Page 53 Item Operation flow and applicable data, etc. Operation description 7-1. 1) Operation control 1. Purpose Basic The operations of the Remote controller Operation hydro unit and the outdoor unit are controlled according to Operation Remote controller settings user-defined operation condition selection <Heating>...
  • Page 54 Item Operation flow and applicable data, etc. Operation description 7-1. 2) Hot water supply operation Hot water supply operation Basic 1. Purpose Operation Hot water supply Hot water supply Hot water temperature: 40°C to 75°C 2. Details operation start This section performs hot water supply operation according to Circulation pump "ON/OFF"...
  • Page 55 Item Operation flow and applicable data, etc. Operation description 7-1. 4) Cooling operation 1. Purpose Basic Cooling Operation 2. Details Cooling operation Cooling temperature: 7°C to 25°C This section performs start cooling operation according to cooling conditions specified for Circulation pump "ON/OFF" control the steps on the left.
  • Page 56 Item Operation flow and applicable data, etc. 7-2. 1) Heat pump operation range of hot water supply, heating and cooling Operation Mode The heat pump operation range of hot water supply, heating and cooling is shown on the figures below. and Control Method 401, 601...
  • Page 57 Item Operation flow and applicable data, etc. 7-2. Operation Mode 801, 1101 and Control Method Cooling operation range Heat pump operation range of hot water supply and heating. * With the exception of TO 25°C or higher for heating. Heat pump operation range of hot water supply and heating, until discharge temperature getting too high.
  • Page 58 Item Operation flow and applicable data, etc. 7-2. The following shows the operation modes and controlled objects. Operation Mode Operation Heating and Hot water both operate Cooling and Hot water both operate and Control mode Method Heat pump select Heat pump select Heat pump select Heat pump select for hot water...
  • Page 59 Item Operation flow and applicable data, etc. 7-2. 3) Heating operation Operation Mode <Operation only for ZONE1> and Control • This operation is enabled when DN_6B9 is set to "0000" (default). Method • The remote controller displays settings, and only the set temperature of can be changed.
  • Page 60 Item Operation flow and applicable data, etc. 7-2. 4) Cooling operation Operation Mode Pressing the [ ] button twice, starts a cooling operation. and Control 1) Operation start condition Method Pressing the [ ] button twice, starts a cooling operation. Heat pump operation (Cooling) eration mode selection...
  • Page 61 Item Operation flow and applicable data, etc. 7-2. Related DN Operation Mode Setting item Default Setting available range and Control Method Priority mode switch temperature 0°C -40 - 20°C * Note: When user selects “hot water supply” and “ZONE1,2”, and Heat pump selects hot water supply mode, the Maximum operating time of heat pump is 30 min.
  • Page 62 Item Operation flow and applicable data, etc. 7-2. 7) Boiler control Operation Mode The boiler assists the hot water supply operation and heating operation according to the boiler’s position. and Control Method 7-1) Boiler setting • Connect its connection cable to CN22 port on the PC board of the hydro unit. •...
  • Page 63 Item Operation flow and applicable data, etc. 7-2. 7-2) Boiler-output control Operation Mode • I zone: heat pump operation and Control Normally the heat pump operation is executed in the zone. Method • J zone: heat pump operation and boiler operation *1 In the zone, the heat pump + boiler operation (*2) is executed and the heater operation is executed in the hot-water- supply side.
  • Page 64 Item Operation flow and applicable data, etc. 7-2. Related DN Operation Mode Setting item Default Variable range and Control Method Boiler-heat pump switching temperature -10°C -20 - 20°C Control priority between the hydro unit and boiler 0: Hydro unit control Independent temperature (Control valid for operating heat pump mode) control for the hydro unit...
  • Page 65 Item Operation flow and applicable data, etc. 7-2. 9) Anti bacteria operation Operation Mode An Anti bacteria operation regularly performs a Hot water supply operation with the set temperature TSC_H = 75°C and Control (can be set with DN_0A). Method 1) How to operate •...
  • Page 66 Item Operation flow and applicable data, etc. 7-2. 10) Night setback operation Operation Mode A Night setback operation performs heating at 5K lower and cooling at 5K higher temperatures against the remote and Control controller set temperature from the setting start time (22:00) to the end time (6:00) every day. Method Note) •...
  • Page 67 Item Operation flow and applicable data, etc. 7-2. 12) Auto operation Operation Mode An Auto operation sets the water temperature TSC_F depending on the outside air temperature TO. and Control Method 1) How to operate • Pressing the remote controller [ ] button and then setting Auto mode "ON"...
  • Page 68 Item Operation flow and applicable data, etc. 7-2. 13) Night time low-noise operation Operation Mode A night time low-noise operation reduces operation frequency and the number of outdoor fan rotations for a certain period and Control during night time as noise control for urban operation. Method 1101 Heating /...
  • Page 69 Item Operation flow and applicable data, etc. 7-3. 1-2) Low temperature release control Hydro Unit Control A heat pump operation is performed as shown in the table below according to the TC sensor detecting temperature. • For the detected temperature, TC = TWO of a heat pump operation is used. The values of T7 through T10 varies depending on TWI.
  • Page 70 Item Operation flow and applicable data, etc. 7-3. 2) Heater control Hydro Unit Control 2-1) Hot water supply operation During a hot water heat pump operation, the unit energizes the hot water cylinder heater (2.7 kW) when any of following conditions are met. Note that when the hot water supply set temperature (TSC_F) is reached, the unit stops energizing the heater.
  • Page 71 Item Operation flow and applicable data, etc. 7-3. 2) Control at the time of heating heater operation Hydro Unit Control • Controlled Object: Backup heater, Booster heater The backup heater control starts when 3 minutes has passed after the heating heater operation started. The backup heater control increases, decreases, or maintains the number of heaters every 10 minutes (DN) depending on the difference between the heating set temperature (TSC_F) and the heater outlet temperature (THO).
  • Page 72 Item Operation flow and applicable data, etc. 7-3. 2-5) No heater operation Hydro Unit Control According to the DN setting, the unit switches the energize / not energize for the hot water cylinder, backup heater, and booster. For details, see 9-1. (See page 142) (Caution) All heater should be added to this Air to water system.
  • Page 73 Item Operation flow and applicable data, etc. 7-3. Example of pump speed control (heating and hot water supply mode including defrost operation) Hydro Unit Control Item Status FL_max Heating target considered TO X°C Target flow rate Heating target considered TO Y°C Hot water supply target FL_min 0 L/min...
  • Page 74 Item Operation flow and applicable data, etc. 7-3. 3-6) Controlling the built-in circulation pump P1 during cooling operation controlled with the room temperature thermostat Hydro Unit Control or room temperature remote controller. You can change the action of the built-in circulation pump P1 by setting DN_65. •...
  • Page 75 Item Operation flow and applicable data, etc. 7-3. 4) Control by the flow sensor Hydro Unit Control Whether water flows or not is judged with the valve of water flow sensor. Without water-flow determination from the flow sensor after the hot water supply operation, heating operation, or cooling operation, The HP, backup heater and booster heater are not energized.
  • Page 76 Item Operation flow and applicable data, etc. 7-3. 6-3) Control method Hydro Unit Control • The water temperature setting at starting operation is 40°C (DN_9D) at heating and 20°C (DN_96) at cooling. If the temperature setting calculated by Auto curve at starting operation will be used instead of the fixed temperature 40°C (DN_9D), DN_B5 should be set to “1”.
  • Page 77 Item Operation flow and applicable data, etc. 7-3. 7) Room temperature control with the thermostat Hydro Unit Control You can install a commercially available thermostat to control room temperature. 7-1) Installing the room temperature thermostat • Connect its connection cable to CN21 port on the PC board (MCC-1755) of the hydro unit. •...
  • Page 78 Item Operation flow and applicable data, etc. 7-3. 7-4)Cooling thermostat operation Hydro Unit Control When the cooling thermostat does not reach the assigned temperature (the circuit between (2) and (5) is open), cooling starts under the setting that water temperature for cooling is 20°C (DN_96). If the cooling thermostat has not reached the assigned temperature 30 minutes after cooling had started, the water temperature setting is turned down 1 degree, and the same action will be repeated every 30 minutes until the thermostat reaches the assigned temperature.
  • Page 79 Item Operation flow and applicable data, etc. 7-3. 8) Hot water cylinder thermostat control Hydro Unit Control Hot water can be supplied using an existing hot-water cylinder with a thermostat. 8-1) Installing the hot-water cylinder thermostat • Connect its connection cable to CN21 port on the PC board (MCC-1755) of the hydro unit. •...
  • Page 80 Item Operation flow and applicable data, etc. 7-3. 9) Control of Mode selection and forced stop & restart Hydro Unit Control You can change the operation mode and force the operation ON/OFF. • Connect its connection cable to CN21 port on the PC board (MCC-1755) of the hydro unit. Non-voltage contacts CN21 Input items (Default setting)
  • Page 81 Item Operation flow and applicable data, etc. 7-3. 10) Control of limit of heat pump operation (Tempo1, 2) Hydro Unit Control When the peak period of electric power charge is set due to the contract or other conditions, you can limit heat pump operation and give priority to boiler operation using an external input signal.
  • Page 82 Item Operation flow and applicable data, etc. 7-3. 11) Connection to a Smart Grid network (SG ready) Hydro Unit Control The operating mode is controlled through volt free contacts incorporated into the energy meter. • Connect its connection cable to CN21 port on the PC board of the hydro unit. Optional inputs to Hydro Unit This unit has eight input ports.
  • Page 83 Item Operation flow and applicable data, etc. 7-3. 12) Output signal control Hydro Unit Control (Connect its connection cable to the CN22 terminal on the PC board (MCC-1755) in the hydro unit.) Additional Hydro Unit outputs This unit has four output ports. They are selectable by DN. Table1 shows the selectable output functions and default settings.
  • Page 84 Item Operation flow and applicable data, etc. 7-3. 13) Q-H characteristics of hydro unit Hydro Unit Control The following shows the Q-H characteristics. 13-1)HWT-601XWHM3W-E, T6W-E Hydraulic heat exchanger (6 kW) QH characteristics Minimum flow rate Hydro unit (wall mounted) Out of range Pump duty Q-H characteristics (230 V) 100%...
  • Page 85 Item Operation flow and applicable data, etc. 7-3. 14) Automatic restart control Hydro Unit Control The unit records operation information before a power outage and retrieves the information after the power is restored to restart automatically the operation with the information. 14-1)Operation during remote controller •...
  • Page 86 Item Operation flow and applicable data, etc. 7-3. 15-4)Piping freeze prevention control 4 When the value of Ps sensor is low, freeze prevention is activated regardless of a heat pump operation mode. Hydro Unit Control 1) Determination condition: Low pressure sensor detects PS < 0.2 MPa and 180 seconds passes (defrosting and cooling) Low pressure sensor detects PS <...
  • Page 87 Item Operation flow and applicable data, etc. 7-4. 1) PMV (Pulse motor valve) control Outdoor unit Valve opening is controlled using the expansion valve with a pulse motor according to a heat pump operation status. control • PMV is controlled between 30 and 500 pulses during an operation. •...
  • Page 88 Item Operation flow and applicable data, etc. 7-4. 3) Current release control Outdoor unit The number of compressor rotation is controlled so that current value of the compressor drive circuit does not exceed the control specified value. • The outdoor unit detects the input current. •...
  • Page 89 Item Operation flow and applicable data, etc. 7-4. 4) Outdoor fan control Outdoor unit The outdoor side control part controls the number of fan motor rotations by receiving an operation instruction from the control Hydro side (Hydro unit) control part. For sensing the true outside temperature, fan is operated without compressor operation.
  • Page 90 Item Operation flow and applicable data, etc. 7-4. 4-2) Hot water supply and heating fan control Outdoor unit control 1) The TE sensor, TO sensor and operation frequency control the outdoor fan. (The minimum W1 to the maximum are controlled according to the table below.) 2) For 3 minutes after the start, the maximum fan tap for each zone that is shown in the following table is fixed.
  • Page 91 Item Operation flow and applicable data, etc. 7-4. 5) Defrosting control Outdoor unit 5-1) Defrost operation control This control defrosts the outdoor heat exchanger. The temperature sensor (TE sensor) of the outdoor heat exchanger determines frost formation, and then defrosting is performed in the 4-way valve reverse defrosting method. 1) During a heating operation, defrosting is performed when the TE sensor meets any of the conditions in A through D zones.
  • Page 92 Item Operation flow and applicable data, etc. 7-4. Jumper switching O: Short circuit ×: Open Outdoor unit control J805 J806 150 min (Factory default) × 90 min × 60 min × × 30 min 5-2) Advance defrost operation When compressor temperature is low, defrosting preliminary operation will be carried out to carry defrosting smoothly in effect.
  • Page 93 Item Operation flow and applicable data, etc. 7-4. 6) Winding heating control Outdoor unit 1) This control energizes the inactive compressor instead of the case heater to warm the compressor. The purpose is control to prevent the refrigerant from staying inside the compressor. 2) After the unit is installed, failure to perform energization for the given time period may cause the compressor to fail.
  • Page 94 Item Operation flow and applicable data, etc. 7-4. 9) High pressure release control Outdoor unit 1) To prevent excessive high pressure rise, operating frequency is controlled by the PD sensor. control 2) If the PD sensor detects an abnormal stop zone pressure, the compressor stops and the abnormality detection counter increments.
  • Page 95 Item Operation flow and applicable data, etc. 7-4. 13) Start up from hibernation Outdoor unit This control operates at startup, in order to warm up the compressor by the heat from the water. control System is operated at a defrost cycle when the start condition is satisfied. System is switched to the normal heating operation when the end condition is satisfied.

  • Page 96: Method Of Defect Diagnosis

    Method of defect diagnosis In order to diagnose the defective part of the heat pump system, first understand the symptom of the defect. (1) Check the operation status. (It does not move, or it moves but stops, etc.) (2) Flashing display on the display part of the hydro unit. (3) Check the “check code”...

  • Page 97: 8-1-1.Check The Power Supply Voltage

    8-1. Matters to be confirmed first 8-1-1. Check the power supply voltage Check that the power supply voltage is AC220-240 V± 10% (signal phase). If the power supply voltage is not in this range, it may not operate normally. 8-1-2. Check for any miswiring of the connection cables between the hydro unit and the outdoor unit The hydro unit and the outdoor unit are connected with three connection cables.

  • Page 98: 8-3.Outline Of The Determination Diagram

    8-3. Outline of the determination diagram The first determination of whether a defective part is in the hydro unit or the outdoor unit can be performed by the following method. 8-3-1. Procedure of defect diagnosis In the case of a defect, please apply the following procedure in order to find the defective part. Confirm the check Check code Defect in Hydro unit...

  • Page 99: 8-3-4.How To Diagnose By Error Code

    8-3-4. How to diagnose by error code Defect mode detected by the Hydro Unit O ... Possible × ..Not possible Diagnostic functional operation Number of Check abnormalities Detailed Determination and action code Backup Automatic item Operational cause operation reset confirmation Flowing quantity error 1.
  • Page 100 Diagnostic functional operation Number of Check abnormalities Detailed Determination and action code Backup Automatic item Operational cause operation reset confirmation Overheat protection operation 1. No water (heating without water) or no water flow. When the thermostat of the backup Heating ×...
  • Page 101 Diagnostic functional operation Number of Check abnormalities Detailed Determination and action code Backup Automatic item Operational cause operation reset confirmation Regular communication error 1. Check the serial circuit. between hydro unit and outdoor unit • Miswiring of the crossover between the water heat exchanger and the The serial signal cannot be received outdoor unit...
  • Page 102 Diagnostic functional operation Number of Check abnormalities Detailed Determination and action code Backup Automatic item Operational cause operation reset confirmation EEROM error 1. Replace the water heat exchange × × Inconsistency is detected once without — control board. verify ACK after writing to EEPROM. Extended IC error 1.
  • Page 103 Defect mode detected by the outdoor unit O ... Possible × ..Not possible Diagnostic functional operation Number of Check abnormalities Detailed Determination and action code Backup Automatic item Operational cause operation reset confirmation TD sensor error 1. Check the resistance value and ×...
  • Page 104 Diagnostic functional operation Number of Check abnormalities Detailed Determination and action code Backup Automatic item Operational cause operation reset confirmation Operation of case thermostat 1. Check the refrigeration cycle (gas leak). When the case thermostat exceeds 2. Check the case thermostat and 125°C.
  • Page 105 Diagnostic functional operation Number of Check abnormalities Detailed Determination and action code Backup Automatic item Operational cause operation reset confirmation Detection of gas leak 1. Check the refrigeration cycle (gas When the discharge temperature sensor leak). (TD) exceeds 106°C for consecutive 10 2.
  • Page 106 Defect mode detected by the remote controller Diagnostic functional operation Check code Determination and action Status of air- Operational cause Condition conditioning No communication between hydro Stop – Defect in the remote controller power unit an remote controller supply displaying at •...

  • Page 107: 8-4.Diagnosis Flow Chart For Each Error Code

    8-4. Diagnosis flow chart for each error code 8-4-1. Hydro unit failure detection [A01] Flowing quantity error [A01] occurs Operation restarts Built-in circulation pump rotates Perform air vent Connect pump Pump is connected connector to board to board Excess air noise Replace the pump comes from inside the pump...
  • Page 108 [A02] Temperature increase error (heating) Start (TWI, TWO, THO ≥ 70°C) TWI, TWO, and THO Replace TWI, TWO, sensor characteristics are and THO sensors correct Flow sensor is normal Replace flow sensor Water outlet temperature is 70 °C or higher Hot water from Correct water circuit boiler or other circuits does...
  • Page 109 [A03] Temperature increase error (hot water supply) Start (TTW ≥ 85°C is detected) TTW sensor Replace TTW sensor characteristic is correct Hot water cylinder heater is energized At normal temperature, tank thermostat is energized Hot water cylinder Replace hot water thermostat operates cylinder thermostat Operation...
  • Page 110 [A04] Antifreeze operation (1) When the outside temperature and inlet water temperature is low (approx. 20°C or lower) and the room load is large (operation frequency ≥ rating), the freeze prevention control may be activated. Start Operation restart Perform air vent Excess air Secure water Dirt clogging...
  • Page 111 [A05] Piping antifreeze operation Restart 4, TWO 4, or 4 is detected Circulation pump keeps being energized or 3 minutes passed after the start Hydro unit DN code setting DN code setting DN_6D2 = “0” DN_6D2 = “0” Backup heater terminal Check wiring construction has 220-240 V (±...
  • Page 112 [A08] Low pressure sensor operation error Start Flow sensor is normal Replace flow sensor Remove sufficiently excess air Excess air Secure water Waste stuck inside noise comes from Remove waste circulation amount water circuit inside pump 12 M or longer water Place buffer tank and pipe to a branch, the second pump...
  • Page 113 [A09] Overheat protection operation Start Put water into water circuit Water cycle contains water (Recommended: 1 - 2 Bar) Replace flow sensor Flow sensor is normal Replace heater unit exchanger air vent valve At normal temperature, overheat preventive thermostat Check water heat is normal exchange control board If defective, replace it...
  • Page 114 [A10] Antifreeze operation (2) Start Flow sensor is normal Replace flow sensor Remove sufficiently excess air Excess air Secure water Waste stuck inside noise comes from Remove waste water circuit circulation amount inside pump 12 M or longer water Place buffer tank and pipe to a branch, the second pump or 5 or less branches...
  • Page 115 [A11] Operation of the release protection Start Flow sensor is normal Replace flow sensor Remove sufficiently excess air Excess air Waste stuck inside Secure water noise comes from Remove waste water circuit circulation amount inside pump 12 M or longer water Place buffer tank and pipe to a branch, the second pump...
  • Page 116 [A12] Heating, hot water heater error Restart Operation starts under 10 ≤ TWI 20°C Freeze prevention control is detected once Heater backup operation Heating: Booster heater Hot water supply: Hot water cylinder heater After 1 hour since heater operation started, neither TWI ≥ 15°C A12 abnormality detection nor TTW ≥...
  • Page 117 [A13] [A14] Pump error Start Power terminal has Input appropriate voltage AC 220-240 V(±10%) Pump power input has AC 220-240 V High humidity around Resolve the cause the electric board of the pump Dew condensation to Resolve the cause the electric board of the pump Locking by a certain Resolve the cause...
  • Page 118 [E04] Regular communication error between hydro unit and outdoor unit Outdoor unit error occur (Check the display board of outdoor unit) The wiring and Correct wiring and connecting between outdoor connecting wire unit and hydro unit are correct Hydro unit CN01 connector and Correct connector and TB01 terminal block (1, 2, 3)
  • Page 119 [F04] TD sensor error Start TD sensor Correct TD sensor connector (*) is connection connected * 401, 601 = CN601 801, 1101 = CN603 TD sensor Replace TD sensor resistance characteristic (Refer to Characteristic table on page 137) is normal PC board Check outdoor control board <401, 601>...
  • Page 120 [F08] TO sensor error Start TO sensor Correct TO sensor connector (CN602) is connection connected TO sensor resistance characteristic Replace TO sensor (Refer to Characteristic table on page 137) is normal PC board Check outdoor control board <401, 601> MCC-1768 If defective, replace it <801, 1101>...
  • Page 121 [F14] TTW sensor error Start TTW sensor connector Correct TTW sensor (CN603 (MCC-1753), CN03, connection CN20 (MCC-1755)) is connected TTW sensor Replace TTW sensor characteristic is normal (Refer to Characteristic table on page 137) PC board Check water heat exchange control board MCC-1753 If defective, replace it MCC-1755...
  • Page 122 [F19] Detection of THO disconnection error Start THO sensor Attach THO sensor is attached to pipe to pipe THO sensor Replace THO sensor characteristic is normal (Refer to Characteristic table on page 137) TWO sensor Replace TWO sensor characteristic is normal (Refer to Characteristic table on page 137) Check water heat exchange control board PC board...
  • Page 123 [F20] TFI detach error Start Mixing valve is attached Attach a mixing valve Mixing valve connection Make the mixing valve is correct (Refer to wiring diagram of hydro unit on connection correct page 27) Mixing valve setting Make the mixing valve is correct setting correct DN_0C: Mixing valve running time...
  • Page 124 [F23] Low pressure sensor error Start Low pressure sensor Attach low pressure sensor is detached (CN607) When operation is stopped, low pressure sensor Replace low pressure sensor is normal *1 *1 How to determine: When operation is stopped Check water heat exchange control board PC board If defective, replace it MCC-1753...
  • Page 125 [F32] Flow sensor error Start Flow sensor Correct flow sensor connector (CN609) connection is connected Flow rate detected Replace flow sensor by flow sensor is almost same as actual value Check water heat exchange control board PC board If defective, replace it MCC-1753 [F33] Flowing quantity error Start...
  • Page 126 [L02] Combination error The model name of the outdoor unit is not HWT-xxxxH(R)W-E. Replace the outdoor unit with the proper model. And check the combination of INJ type or not is correct. [L07] Communication error At the time of power on, detecting the above failure automatically activates the automatic address setting mode.

  • Page 127: 8-4-2.Outdoor Unit Failure Detection

    8-4-2. Outdoor unit failure detection Diagnosis procedure for each check code • One check code may indicate multiple symptoms. In such a case, see the LED indication on the outdoor board to narrow down the check details. • The handy remote controller displays a check code only when the same failure repeatedly occurs while the LED on the outdoor board indicates an error even if it occurs only once.
  • Page 128 Outdoor LED Check and Action procedure Check code indication (No specific description indicates outdoor unit parts.) [H01] [Compressor break down] Power voltage is normal Improve power line AC220-240 V±10% Wiring connection is normal Check and correct wiring Compressor lead (Board side, compressor connection side reactor lead, power lead) Abnormally over loaded...
  • Page 129 Outdoor LED Check and Action procedure Check code indication (No specific description indicates outdoor unit parts.) [H04] [Case thermostat operation] <401, 601> CN500, <801, 1101> CN609 Correct connector connector and case thermostat is normal Replace case thermostat If case thermostat is short circuited, Check outdoor board cooling and heating can operate If defective, replace it...
  • Page 130 Outdoor LED Check and Action procedure Check code indication (No specific description indicates outdoor unit parts.) [P03] [Discharge temp trouble] No gas leakage Correct defective portion Appropriate refrigerant amount Re-charge refrigerant Correct defective portion Pulse motor valve is normal Replace defective parts Deal with or remove Abnormally over loaded causes...
  • Page 131 Outdoor LED Check and Action procedure Check code indication (No specific description indicates outdoor unit parts.) [P04] * Any of the following abnormality may occur. Seeing the LED on the outside board can determine which abnormality occurs. 1.High pressure sensor activated. 2.Power source failure (Vdc) 3.Hi pressure protection operation 4.Case thermostat operation...
  • Page 132 Outdoor LED Check and Action procedure Check code indication (No specific description indicates outdoor unit parts.) [P05] [Power source trouble] Power voltage is normal Check electric work AC220-240 V±10% PC board Check outdoor control board <401, 601> MCC-1768 If defective, replace it <801, 1101>...
  • Page 133 Outdoor LED Check and Action procedure Check code indication (No specific description indicates outdoor unit parts.) [P19] [4-way valve reversal trouble] Does 4-way valve Is the coil work correctly? resistance Replace (Check pipe temp. etc. value of 4-way 4-way valve coil in cooling/heating valve normal? operation)
  • Page 134 Outdoor LED Check and Action procedure Check code indication (No specific description indicates outdoor unit parts.) [P20] [High pressure protection operation] Open fully service valve Service valve is fully opened Heating season Heating operation Reset the power source and perform test run matching to the season Cooling season Cooling operation...
  • Page 135 Outdoor LED Check and Action procedure Check code indication (No specific description indicates outdoor unit parts.) [P22] [Fan system trouble] Power voltage is normal Check wiring construction Ask repair of power supply AC220 - 240 V±10% Rotate shaft of the fan motor by hands during power-OFF.
  • Page 136 Outdoor LED Check and Action procedure Check code indication (No specific description indicates outdoor unit parts.) [F04] [Discharge temperature sensor (TD) failure] TD sensor connector is Correct TD sensor connected connection TD sensor resistance Replace TD sensor characteristic is normal Refer to the characteristic table on page 137...
  • Page 137 Outdoor LED Check and Action procedure Check code indication (No specific description indicates outdoor unit parts.) [F12] [Suction temperature sensor (TS) failure] Correct TS sensor TS sensor connector is connection connected TS sensor resistance Replace TS sensor Refer to the characteristic is normal characteristic table on page 137...

  • Page 138: 8-4-3.Temperature Sensor, Temperature-Resistance Characteristic Table

    8-4-3. Temperature sensor, temperature-resistance characteristic table TWI, TFI, TTW sensors Typical value Resistance value (kΩ) Temperature (°C) (Minimum) (Standard) (Maximum) 31.18 32.82 34.46 19.12 19.95 20.78 12.08 12.50 12.92 9.700 10.00 10.30 7.808 8.050 8.291 5.155 5.314 5.474 3.482 3.590 3.698 2.380 2.478...

  • Page 139: 8-5.Operation Check By Pc Board Switch

    8-5. Operation check by PC board switch 8-5-1. Operation check mode This mode allows to check the operations of the water 2-way valve, water 3-way valve, mixing valve, and circulation pump. This operation is valid when the hydro unit and the outdoor unit are turned on the power. Operation check mode (1) Preparation 1) Turn all of the remote controllers “OFF”...

  • Page 140: 8-6.Brief Method For Checking The Key Components

    8-6. Brief method for checking the key components 8-6-1. Hydro unit Component name Check procedure Water heat exchange Remove the connector and measure the resistance value with a tester. (Normal temperature) temperature (TC) sensor Temperature 0°C 10°C 20°C 30°C Water inlet temperature Sensor (kΩ) (TWI) sensor Water heat exchange temperature (TC) sensor...

  • Page 141: 8-6-2.Outdoor Unit

    8-6-2. Outdoor unit Component name Check procedure Compressor Measure the resistance value of each winding with a tester. Type 401HW-E, 601HW-E DX150A1T-21F Resistance Location (401HW-E, 601HW-E) value NX220A1FJ-20N − White 1.04 - 1.16 Ω (801HW-E, 1101HW-E) − White Black 1.04 - 1.16 Ω −...
  • Page 142 Component name Check procedure Pulse motor valve coil PQ-M10012-000313 Type 1 White Location Resistance value PQ-M10012-000313 5 Red Red − White, Orange (401HW-E, 601HW-E) 46 ± 3.7 Ω 3 Orange Gray − Yellow, Blue UKV-A040 FAM-MD12TF-1 (801HW-E, 1101HW-E) Yellow Gray Blue UKV-A040 1 Black...

  • Page 143: Hydro Unit And Outdoor Unit Settings

    Hydro unit and outdoor unit settings Hydro unit 1. Hydro unit Setting After DN code DN Description Default Change 1 Change 2 Change 3 Commissioning Used to activate external boiler output. 0 = external boiler output de-activated; 1 = external boiler output activated Boiler install location 0 = Heating side after 3 way valve 1 = Before 3 way valve...
  • Page 144 2. DN Setting • Hydro unit DN code setting is available only for the header remote controller. • Set DN codes for various operation modes with the remote controller. 2-1. How to set hydro unit DN <Procedure> Perform the following when no operation is in progress. Press the [ ] button and the [ ] button at same time for 4...
  • Page 145 2-2. How to set remote controller DN <Procedure> Perform the following when no operation is in progress. Press the [ ] button and the [ ] button at same time for 4 seconds or longer on the top screen to display the “FIELD SETTING MENU”.
  • Page 146 DN table Item Details Factory default Cooling/Non-cooling switching 0000: Cooling 0001: Not cooling 0000: Cooling Central control address 0001 0128 None Hot water boost operation time (operating time) 0003: 30 min 0018: 180 min 0006: 60 min Hot water boost set temperature 0040: 40°C 0080: 80°C 0075: 75°C...
  • Page 147 Item Details Factory default Hydro unit backup heater up time 0000: 10 min 0001: 20 min 0000: 10 min 0002: 30 min 0003: 40 min Frost protection function Invalid/Valid 0000: Invalid 0001: Valid 0001: Valid Frost protection set temperature 0008: 8°C 0020: 20°C 0015: 15°C 2-way valve operation (logical reverse) control...
  • Page 148 Item Details Factory default Set temperature B' with outside temperature of T1 0020: 20°C 0055: 55°C (401 / 601), 0035: 35°C 0065: 65°C (801 / 1101) Set temperature E' with outside temperature of 20°C 0020: 20°C 0055: 55°C (401 / 601), 0020: 20°C 0065: 65°C (801 / 1101) Group control...
  • Page 149 Item Details Factory default 6B0 Boiler output enabled 0000: No 0001:Yes 0000: No 6B1 Boiler install position after 3WV heating side / before 0000: After 3WV heating side 0000: After 3WV 0001: Before 3WV heating side 6B2 External cylinder thermostat connected 0000: No 0001: Yes 0000: No...
  • Page 150 Remote controller DN table Item Details Fist shipment Temperature correction by the room temperature sensor -10K~+10K: By 1K steps -1: -1K correction (heating) Temperature correction by the room temperature sensor -10K~+10K: By 1K steps -1: -1K correction (cooling) Night time low-noise mode 0: Invalid 1: Valid 0: Invalid...
  • Page 151 2-3. How to reset hydro DN (1) Procedure 1) Proceed the hydro DN setting screen. * See 9-2-1. Hydro DN setting 2) Press the long time in DN setting screen, and select “YES”. NOTE • After DN reset, it will take few minutes to back normal screen. First communication screen will continue for few minutes, but it is NOT trouble.
  • Page 152 3. Test run • Even if the outside air temperature or water temperature is outside the setting value range, Heating, Cooling and Hot water supply operation become possible. • Since the protection setting is disabled in the TEST mode, do not continue a test run longer than 10 minutes. <Procedure>...
  • Page 153 4. Auto Curve Setting • This function is available only for the header remote controller. • Set DN for various operation modes with the remote controller. <Procedure> Perform the following when no operation is in progress. Press the [ ] button and the [ ] button at same time for 4 seconds or longer on the top screen to display the “FIELD SETTING MENU”.
  • Page 154 <ZONE1> • An operation starts at the set temperature of straight -line approximation for the following: water temperature A°C with the outside temperature T0°C, B°C with T1°C, C°C with T2°C, D°C with T3°C, and E°C with 20°C. Related DN TSC_F (°C) Setting item Default range...
  • Page 155 Auto-Curve temperature shift • This function is available only for the header remote controller. • The set temperature can be shifted in the range of ±5K of the current setting. Press the [ ] / [ ] button to select “Auto mode” on the MENU MENU(1/2) screen.
  • Page 156 5. Clock Setting • Setting for the clock (date, month, year, time) Press the [ ] / [ ] button to select “Setting” on the MENU MENU(2/2) screen, then press the [ ] button. Anti bacteria Frost protection Setting Information Power consumption Press the [ ] / [...
  • Page 157 6. Scheduled Operation Setting 6-1. How to set scheduled operation • This function is available only for the header remote controller. • Schedule setting makes the following modes to be flexibly set: hot water supply, heating, cooling, hot water supply and heating, hot water supply and cooling, and stop, and set temperature. •...
  • Page 158 Press the [ ] button. Condition setting Schedule timer confirm? Press the [ ] button to Fix. Mode : Operation mode (HEAT, COOL, HW (Hot water)) : ZONE1 setting temperature : ZONE2 setting temperature : Hot water supply operation setting temperature Start : Operation start time (0:00 ~ 23:59) : Operation end time (0:00 ~ 24:00, -- : --)
  • Page 159 To set up ranging over a day There are two methods. 1.If “24:00” is set to “END” and “00:00” is set to “START” next day, the previous operation status will be continued. And set the time you want to stop to “END”. 2.If “--”...
  • Page 160 To copy the settings of the previous day Press the [ ] button to select the day, then press the [ ] button Condition setting(1/2) to copy the settings of the previous day. WED THU FRI SAT SUN Mode Start - - : - - - - : - - - - : - -...
  • Page 161 Holiday setting • Set the days of the week when the schedule timer not used. ] / [ Press the button to select “Holiday setting” on the Schedule setting Schedule setting screen, then press the [ ] button. Condition setting Holiday setting Key lock Press the [...
  • Page 162 7. Frost protection Setting • This function performs operation with the minimum capacity (target water temperature:15°C) to prevent pipes from freezing in case the unit is not used for a long period due to absence. • Cancel schedule timer to start Frost protection operation. When Frost protection is operated with schedule timer on, it may stop during its operation.
  • Page 163 <How to set Frost protection operation end time> • This function is available only for the header remote controller. Press the [ ] / [ ] button to select “Frost protection” on the MENU(2/2) MENU screen. Anti bacteria Frost protection Setting Information Power consumption...
  • Page 164 8. NIGHT Operation Setting • This function is used for energy saving during specified time zone (sleeping hours, etc.). • For night time hours (sleeping hours, etc.), this function shifts the set temperature of heating or cooling by 5K. Press the [ ] / [ ] button to select an “Night setback”...
  • Page 165 9. Anti bacteria Setting • This setting regularly raises the hot water cylinder temperature to prevent bacteria from growing. • The Anti bacteria operation is performed to maintain the temperature (75°C) for the period (30 minutes) when the preset start time (22:00) comes according to the preset cycle (7 days). •...
  • Page 166 10. Hot water boost Setting • This function is used when temporarily giving priority to the hot water supply operation. The hot water supply operation is performed in preference to other operations with a target of the preset time (60 minutes) or the preset temperature (75°C).
  • Page 167 11. Night time Low-noise Setting • This function is available only for the header remote controller. • This setting is used to reduce noise output, from the outdoor unit, during night time for neighbors. Night time low- noise operates with lower operation frequency and fan tap than normal operation only for the set time period. Press the [ ] / [ ] button to select “Silent mode”...
  • Page 168 12. Forced Defrosting Setting • This function is available only for the header remote controller. • This function can active the forced defrosting mode for the outdoor unit. Press the [ ] button and the [ ] button at same time for 4 seconds or longer on the top screen to display the “FIELD SETTING MENU”.
  • Page 169 13. Display Function of Set Temperature and Other Settings • The sensor sensing temperature is displayed on the remote controller. • This function allows you to make sure whether the sensor is installed properly. ▼Sensor temperature display calling <Procedure> Press the [ ] button and the [ ] button at same time for 4 seconds or longer on the top screen to display the “FIELD SETTING...
  • Page 170 Item code Data name Unit Target temperature for hot water supply °C Target water temperature for Zone1 °C Target water temperature for Zone2 °C Remote controller sensor temperature °C Condensed temperature (TC) °C Water inlet temperature (TWI) °C Water outlet temperature (TWO) °C Water heater outlet temperature (THO) °C...
  • Page 171 14. Failure History Calling Function • List of latest 10 alarm data: error information of error code, date and time is displayed. <Procedure> Press the [ ] button and the [ ] button at same time for 4 seconds or longer on the top screen to display the “FIELD SETTING MENU”.
  • Page 172 15. Floor drying • This function is available only for the header remote controller. • This function is used for drying concrete etc. • Service personnel must operate the unit after setting the related DN code. • Operation is not started unless All the related DN codes are set. •...
  • Page 173 To start the operation Press the [ ] button and the [ ] button at same time for 4 seconds or longer on the top screen to display the “FIELD SETTING MENU”. Press the [ ] / [ ] button to select “Floor drying” on the FIELD SETTING MENU(1/2) FIELD SETTING MENU, then press the [ ] button.
  • Page 174 16. Power consumption • Shows latest power consumption. • This function is available only for the header remote controller. Press the [ ] / [ ] button to select “Power consumption” MENU(2/2) on the MENU screen, then press the [ ] button.
  • Page 175 17. Reset power consumption data • This function is available only for the header remote controller. Press the [ ] button and the [ ] button at same time for 4 seconds or longer on the top screen to display the “FIELD SETTING MENU”.
  • Page 176 18. Sensor information • Shows the value of sensor. Press the [ ] button and the [ ] button at same time for 4 seconds or longer on the top screen to display the “FIELD SETTING MENU”. Press the [ ] / [ ] button to select “Sensor information”...
  • Page 177 Outdoor unit 19. Outdoor Unit Setting 19-1. Refrigerant recovery control Although HFC refrigerant is "Ozone depletion potential = 0", emission control is applied to it as a greenhouse effect gas. This model has a switch for the outdoor unit to perform an environment-friendly refrigerant recovery operation (pump down) when the model is replaced or discarded.
  • Page 178 19-2. Service support functions (LED indication, Switch operation method) The following settings are available with switches. (1) Overview Using 2 push-button switches (SW01, SW02) can make settings available and confirm operations. For operation Part number Specification Operation details SW01 Press button switch This switch switches the indications of LED (D800 to D804) on the outdoor control board.
  • Page 179 (2) LED indication switching (2) -1. Abnormality indication ▼HWT-401HW-E, HWT-601HW-E, HWT-801H(R)W-E, HWT-1101H(R)W-E Diagnostic Procedure for Each Check Code (Outdoor Unit) 1) This section describes the diagnostic method for each check code displayed on the wired remote controller. 2) In some cases, a check code indicates multiple symptoms. In this case, confirm the LED display of the outdoor unit to narrow the contents to be confirmed.
  • Page 180 (2) -1-1.Current trouble indication LED indication Wired remote Name of trouble control trouble code D800 D801 D802 D803 D804 D805 Normal — Discharge temp. sensor (TD) trouble Heat exchanger temp. sensor (TE) trouble Heat exchanger temp. sensor (TL) trouble Outside temp. sensor (TO) trouble Suction temp.
  • Page 181 (2) -1-2.Latest (including current) trouble indication LED indication Name of trouble D800 D801 D802 D803 D804 D805 Normal Discharge temp. sensor (TD) trouble Heat exchanger temp. sensor (TE) trouble Heat exchanger temp. sensor (TL) trouble Outside temp. sensor (TO) trouble Suction temp.
  • Page 182 (2)-2. Sensor, Current, Compressor operation frequency, PMV position indication The values detected by controller, such as temperature sensor or current values, can be easily checked. [Method of Operation] 1) Confirm D800 to D804 are off (or rapidly flashing) and that D805 is lit up. If D800 to D804 are slowly flashing or D805 is flashing then push and hold down SW01 and SW02 at the same time for at least 5 seconds.
  • Page 183 3) Push SW02 to switch to the desired display item (Refer to (2) -2-2.) 4) To access the other display items repeat steps 1) to 3). 5) Before exiting ensure to perform step 1) and set the LED to the initial state (current abnormality indication). (2) -2-2.
  • Page 184 (3) Special operation for maintenance and inspection [Method of Operation] 1) Confirm the LED display shows the initial state. If not then return it to the initial state. 2) Push and hold down SW01 for at least 5 seconds. D804 will start slowly flashing. 3) Push SW01 until reaching the LED display function you wish to set.

  • Page 185: Replacement Of The Service Pc Board

    Replacement of the service PC board WARNING Don't open the PC board cover before 1 minute after power has been turned off beacuse an electric shock may be occurred. In the case of replacing the PC board, also confirm the chapter “11 How to exchange main parts”. 1.

  • Page 186: How To Exchange Main Parts

    How to exchange main parts WARNING <Turn off the power breaker> Because the electrical components are energized with high voltage, always turn off the power breaker before starting to work. <Check> Ensure that no water pressure is present when replacing the water circuit (circulation pump, heater unit, flow sensor, etc). After a repair is complete, perform a test run (after attaching the front panel, upper and lower cabinets, and side cabinet) and check that no abnormality including smoke or abnormal noise occurs.
  • Page 187 Exchange parts name Work procedure Remarks Remote controller 1.How to remove 1) Perform the step 1-1. 2) Remove the remote controller from the holder using a flat-blade screwdriver. (Release the stopper.) 3) Disconnect the remote controller cable from the Remote mote terminal block on the back side of the remote controller...
  • Page 188 Exchange parts name Work procedure Remarks Electric parts 1. How to remove assembly 1) Perform the step 1-1. 2) Disconnect the connectors and lead cables connected to other parts from the water heat exchanger board. NOTE When removing the connector, release the safety lock of the housing.
  • Page 189 Exchange parts name Work procedure Remarks Upper board 1) Perform the step 1-1-1), 2), 3), 4), 5). Upper board Upper Upper 2) Remove the fixed screws of the upper board. (Ø4 × 8, 2 screws) Bottom board 1) Perform step1-1, step 5. 2) Remove the fixed screws of the bottom board.
  • Page 190 Exchange parts name Work procedure Remarks Expansion vessel To replace a water circuit part, first close the water Rotating the overpressure- supply source valve and the valve of water pipe Expansion vessel Expansion vessel Expansion vessel preventive valve connected to the hydro unit. 1) Perform the step 1-1, step 4, step 5-1, step 6.
  • Page 191 Exchange parts name Work procedure Remarks Pump To replace a water circuit part, first close the water supply source valve and the valve of water pipe connected to the hydro unit. 1. How to remove 1) Perform the step 1-1, step 5-1. 2) Remove the connector and wire of the Pump from Quick electrical parts assembly.
  • Page 192 Exchange parts name Work procedure Remarks Flow sensor To replace a water circuit part, first close the water supply source valve and the valve of water pipe connected to the hydro unit. 1. How to remove 1) Perform the step 1-1, step 5-1. 2) Remove the quick fasteners connecting the flow sensor.
  • Page 193 Exchange parts name Work procedure Remarks Heater assembly To replace a water circuit part, first close the water Exit quick fastener supply source valve and the valve of water pipe connected to the hydro unit. 1. How to remove 1) Perform the step 1-1, step 4, step5-1, step 6, step 8-2) 2) Perform the step 11-2) ~ 4).
  • Page 194 Exchange parts name Work procedure Remarks Water heat • Close the water piping source valve and the valve exchanger assembly of water pipe connected to the hydro unit, and then remove the refrigerant and water piping. • Perform refrigerant recovery with the outdoor unit.
  • Page 195 2. Outdoor Unit 2-1. HWT-401HW-E(TR), HWT-601HW-E(TR) Exchange Work procedure Remarks parts name Common 1. Detachment procedure NOTE Wear gloves for this job. Otherwise, you may injure your hands on the parts, etc. Valve cover 1) Stop operation of the air conditioner, and turn off the main switch of the breaker for air conditioner.
  • Page 196 Exchange Work procedure parts name Front cabinet 1. 1) Perform step 1 in 2) Remove the fixing screws (Φ4 × 10, 2screws) used to secure the front cabinet and inverter cover, the screws (Φ4 × 10, 4screws) used to secure the front cabinet at the bottom, and the fixing screws (Φ4 ×...
  • Page 197 Exchange Work procedure Remarks parts name “Detachment (Inverter)” Inverter assembly Perform the step 1-1 Remove screws (Φ4 × 10, 2screws) of the upper part of the front cabinet. Remove screws (Φ4 x 10, 4screws) fixing terminal part of inverter box to the side cabinet (right).
  • Page 198 Exchange Work procedure Remarks parts name “How to check outdoor control board” Inverter assembly Perform the steps up to 2) in “Detachment (Inverter)”. Remove the fixing screws (Φ4 × 10, 2screws) for securing the motor base and the inverter box. •...
  • Page 199 Exchange Work procedure Remarks parts name “Detachment (outdoor control board)” Control board assembly Remove the screws (Φ4 × 10, 2screws) fixing inverter box and P.C. board base. Remove the earth screw fixing inverter box and P.C. board earth lead. base hook And remove the inverter box.
  • Page 200 Exchange Work procedure Remarks parts name Side cabinet (right) Side cabinet 1. Side cabinet (right) 1) Perform step 1 in and all the steps 2) Remove the fixing screw (Φ4 × 10, Valve 3screws) used for securing the side fixing plate cabinet (right) to the bottom plate and valve fixing panel.
  • Page 201 Exchange Work procedure Remarks parts name Partition Compressor 1) Perform work of item 1 of board 2) Extract refrigerant gas. Compressor 3) Remove the partition plate. (Φ4 × 10, 4screws) 4) Remove the sound-insulation material. Valve 5) Remove terminal cover of the compressor, fixing plate and disconnect lead wire of the compressor from the terminal.
  • Page 202 Exchange Work procedure parts name Electronic Coil-PMV Body-PMV expansion valve 1) Perform step 1 in , all the steps in coil and 1 in 2) Remove the coil by pulling it up from the Rotate electronic control valve body. 1) When assembling the coil into the valve body, ensure that the coil anti-turn lock is installed properly in the pipe.
  • Page 203 Exchange Work procedure Remarks parts name TE sensor (outdoor heat exchanging temperature sensor) • Attachment Install the sensor onto the straight pipe part of the condenser outlet pipe. B B B TE sensor lead Straight part Detail C TE sensor TS sensor (Suction pipe temperature sensor) •...
  • Page 204 Exchange Work procedure Remarks parts name TL sensor (outdoor heat exchanging temperature sensor) • Attachment Install the sensor onto the straight pipe part of the condenser outlet pipe. TO sensor holder Straight part Detail E TL sensor lead TL sensor...
  • Page 205 2-2. HWT-801HW-E(TR), HWT-1101HW-E(TR), HWT-801HRW-E, HWT-1101HRW-E Exchange Work procedure parts name Common WARNING Front panel procedures Stop operation of the Air to water heat pump system and turn off breaker switch. Front panel Top cover CAUTION Ensure wearing of gloves when performing any work in order to avoid injury from parts, etc.
  • Page 206 Exchange Work procedure parts name 1. Detachment Plate stay Plate stay 1) Following to work of Detachment of 2) Remove the plate stay and base plate screws. (Φ4 × 10, 2 screws hexagon screws) 3) Remove plate stay. 2. Attachment Attach the plate stay in the reverse process of “1.
  • Page 207 Exchange Work procedure parts name 1. Compressor, Fan IPDU (MCC-1705) Electrical Fig. 5-1 IPDU “Detachment (Compressor, Fan IPDU)” (MCC-1705) 1).Perform the step 1-1. WARNING For 1 minute after the power is turned off, do not Inverter box Inverter box Inverter box Inverter box disassemble the inverter to prevent an electric shock.
  • Page 208 Exchange parts name Electrical Fig. 5-4 IPDU (MCC-1705) Screw Screw Screw Screw (continued) Supporters Supporters Supporters Supporters Inverter box hooks Inverter box hooks Inverter box hooks Inverter box hooks Screw Screw Screw Screw Screw Screw Screw Screw Screws Screws Screws Screws Fig.
  • Page 209 Exchange parts name Electrical IPDU “Fix cables with binding band” (MCC-1705) (continued) [Binding band (A)] [Binding band (B)] Fix cables. Fix cables. (Board wires (P200, P201, P202) (Board wires (P01, P11, P12) and connecters (CN300, CN609) and input power supply wires) Input power supply wires Bundle the excess Bundle the excess...
  • Page 210 Exchange Work procedure parts name Fig. 6-1 Electrical part 1. Interface CDB (MCC-1675) Screws Screws Screws Screws COVER-EP COVER-EP COVER-EP COVER-EP (MCC-1675) “Detachment (Interface CDB)” P.C.board 1).Perform the step 1-1. WARNING For 1 minute after the power is turned off, do not disassem- ble the inverter to prevent an electric shock.
  • Page 211 Exchange Work procedure parts name Fan motor 1.Detachment 1) Following to work of Detachment of Propeller fan Propeller fan Propeller fan 2) Make sure that the fan motor and the propeller fan stop. Remove the flange nut from the fan motor and Fan motor Fan motor Fan motor...
  • Page 212 Exchange Work procedure parts name Fan motor 8) Cut the binding bands for the air duct fixing fan motor (continued) and the motor base (2 position ). 9) Loosen the two claws on the motor base. 10) Remove the fixing screws (4 positions) while holding the fan motor so as not to fall it.
  • Page 213 Exchange Work procedure parts name Compressor 1.Detachment WARNING compressor lead When removing the brazing part of the suction / discharge pipe of the compressor, remove the brazing part in a well- ventilated place after recovering the refrigerant. Pipe panel (front)) Pipe panel (front)) Pipe panel (front)) If recovery is insufficient, the refrigerant and refrigerating...
  • Page 214 Exchange Work procedure parts name 2. Attachment Compressor Compressor lead connector Compressor lead connector Compressor lead connector 1) Attach the compressor in the reverse process of compressor “1. Detachment”. lead (continued) • Also ensure to replace the compressor lead after replacing the compressor. •...
  • Page 215 Exchange Work procedure parts name PMV coil 1. Detachment 1) Following to work of Detachment of 2) Cut the binding band (4 positions) on the back surface 3) Pull the connector for PMV coil out of CDB 4) Remove the coil from the PMV body by rotating the coil (about 45°) while drawing the coil upward.
  • Page 216 Exchange Work procedure parts name Liquid 1. Detachment injection 1) Following to work of Detachment of line PMV coil 2) Cut the binding band (4 positions) on the back surface 3) Pull the connector for PMV coil out of CDB P.C. board. 2.
  • Page 217 Exchange Work procedure parts name 1. Detachment Fan guard SCREWS 1) Following to work of Detachment of NOTE Do the work on a cardboard or a cloth to prevent the product from being scratched. 2) Remove the 4 screws that secure the fan guard. (Φ4 ×...

  • Page 218: For Cooling Installation

    For cooling installation If user install the Hydro unit to place humidity location or high humidity region, also user use cooling mode, please attach moisture- proof parts which parts are contained in Hydro unit. Insulator • Stick the optional insulator for cooling to the bottom of the Hydro Unit.

  • Page 219: Periodic Inspection Items

    Periodic inspection items For a long-term safe operation of this equipment, perform periodic inspection and parts replacement. <Inspection items> Hydro unit Frequency Periodic inspection details 1. Insulation measurement (Power source circuit / Annually Insulation measurement with a mega tester Heater circuit) 2.

  • Page 220: Part Exploded View, Part List

    Part exploded view, part list Hydro Unit...
  • Page 221 Hydro Unit...
  • Page 222 Number of pieces per unit HWT- HWT- HWT- HWT- HWT- HWT- HWT- HWT- HWT- HWT- Safety Location Part No. Description 601XW 601XW 1101XW 1101XW 1101XW 601XW 601XW 1101XW 1101XW 1101XW HM3W HT6W- HM3W HT6W- HT9W- HM3W HT6W- HM3W HT6W- HT9W- 43P00003 PANEL, FRONT, ASSY 43P00004 PANEL, SIDE, ASSY 43P00001 PANEL, UPPER...
  • Page 223 Outdoor Unit (HWT-401HW-E(TR), HWT-601HW-E(TR))
  • Page 224 Inverter Assembly (HWT-401HW-E(TR), HWT-601HW-E(TR))
  • Page 225 Number of pieces per unit Safety Location Part No. Description HWT- HWT- HWT- HWT- 401HW-E 601HW-E 401HW-TR 601HW-TR 43P00012 PANEL, AIR OUTLET, ASSY 43P00013 PANEL, SIDE, RIGHT, ASSY 43P00014 PANEL, SIDE, LEFT, ASSY 43P00015 PANEL, ROOF, ASSY 43P00016 COVER, PACKED, VALVE 43P19003 GUARD, FAN 43P42004...
  • Page 226 Outdoor Unit (HWT-801HW-E(TR), HWT-1101HW-E(TR), HWT-801HRW-E, HWT-1101HRW-E)
  • Page 227 Inverter Assembly (HWT-801HW-E(TR), HWT-1101HW-E(TR), HWT-801HRW-E, HWT-1101HRW-E)
  • Page 228 Number of pieces per unit Safety Location HWT- HWT- HWT- HWT- HWT- HWT- Part No. Description 801HW 1101HW- 801HRW 1101HRW 801HW 1101HW 43P00005 PANEL, AIR OUTLET 43P00006 PANEL, FRONT, ASSY 43P00007 PANEL, SIDE, RIGHT, ASSY 43P00008 PANEL, ROOF, ASSY 43P00009 PANEL, FRONT, PIPING 43P00010 PANEL, BACK, PIPING, ASSY 43P00011 STAY 43P09001 GUARD, FAN...
  • Page 229 MEMO ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
  • Page 230 Copyright © 2021 Toshiba Carrier Air-conditioning Europe Sp. z o.o., ALL Rights Reserved.

This manual is also suitable for:

Hwt-601xwht6w-etrHwt-1101xwhm3w-etrHwt-1101xwht6w-etrHwt-1101xwht9w-etrHwt-401hw-etrHwt-601hw-etr ... Show all

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