1. Manuals
  2. Brands
  3. Toshiba Manuals
  4. Heat Pump
  5. ESTIA HWS-802XWHM3-E
  6. Service manual

Toshiba HWS-802XWHM3-E Service Manual

Air to water heat pump
Hide thumbs Also See for HWS-802XWHM3-E:
Table of Contents

Advertisement

Quick Links

See also: Owner's Manual , Installation Manual
AIR TO WATER HEAT PUMP

SERVICE MANUAL

Model name:
Hydro Unit
HWS-802XWHM3-E
HWS-802XWHT6-E
HWS-1402XWHM3-E
HWS-1402XWHT6-E
HWS-1402XWHT9-E
Hot Water Cylinder
HWS-1501CSHM3-E(-UK)
HWS-2101CSHM3-E(-UK)
HWS-3001CSHM3-E(-UK)
Outdoor Unit
HWS-802H-E
HWS-1102H-E
HWS-1402H-E
A09-002

Advertisement

Table of Contents
loading

Related Manuals for Toshiba HWS-802XWHM3-E

Summary of Contents for Toshiba HWS-802XWHM3-E

  • Page 1: Service Manual

    A09-002 AIR TO WATER HEAT PUMP SERVICE MANUAL Model name: Hydro Unit Outdoor Unit HWS-802XWHM3-E HWS-802H-E HWS-802XWHT6-E HWS-1102H-E HWS-1402XWHM3-E HWS-1402H-E HWS-1402XWHT6-E HWS-1402XWHT9-E Hot Water Cylinder HWS-1501CSHM3-E(-UK) HWS-2101CSHM3-E(-UK) HWS-3001CSHM3-E(-UK)

  • Page 2: Table Of Contents

    Contents 1 SAFETY PRECAUTIONS ..........3 2 NEW REFRIGERANT (R410A).

  • Page 3: Table Of Contents

    9 Method of Defect Diagnosis ..........64 9-1.Matters to be confirmed first .

  • Page 4: Safety Precautions

    SAFETY PRECAUTIONS 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. [About indication] Indication Meaning of Indication DANGER Indicates that a wrong operation may cause a service engineer and the third persons around to get fatal or serious injuries.
  • Page 5 WARNING <No modification> Do not modify the unit. • Do not disassemble or modify the parts also. • A fire, an electric shock, or an injury may occur. <Use specified parts> Use the specified parts (∗) when replacing them. • Using parts other than specified ones may cause a fire or an electric shock. ∗: For details, see the parts price list.
  • Page 6 WARNING <Check insulation> After the work is completed, check with an insulating-resistance tester (500V) that the insulation resistance between the live and dead-metal parts is 2 MΩ or higher. • A low insulation resistance may cause a disaster at a customer site due to electrical leakage or an electric shock. <Ventilate>...

  • Page 7: New Refrigerant (R410A)

    NEW REFRIGERANT (R410A) This Air to Water Heat Pump adopts a new refrigerant HFC (R410A) to prevent destruction of the ozone layer. The working pressure of R410A refrigerant is 1.6 times higher than that of the conventional refrigerant R22.The refrigerant oil is also changed for the new refrigeration. Therefore, during installation or service work, be sure that water, dust, former refrigerant, or refrigeration machine oil does not enter the refrigerant cycle of the new type refrigerant Air to Water Heat Pump.

  • Page 8: Installing Refrigerant Pipe

    2-2. Installing refrigerant pipe 2-2-1. Steel pipe and joint For refrigerant piping, steel pipe and joints are mainly used. Select those comply with JIS (Japanese Industrial Standards) for a service work. Also, use such clean piping materials that less impurities attach to the inside of pipe and joints.

  • Page 9: Processing Of Piping Materials

    2-2-2. Processing of piping materials When installing refrigerant pipe, prevent water or dust from entering the pipe, and do not use oil other than lubricant used for Air to Water Heat Pump. Make sure that no refrigerant leak occurs. If piping needs lubrication, use lubricating oil whose water content is removed. After the oil is put in, be sure to seal the container with airproof cover or other covers.
  • Page 10 Flare connecting procedure and precautions 1) Make sure that the flare and connecting portions do not have any flaw and dust. 2) Correctly align the flared surface and the connecting axis. 3) Tighten the flare with designated torque by means of a torque wrench. The tightening torque for R410A is the same as that for the conventional R22.

  • Page 11: Tools

    2-3. Tools 2-3-1. Necessary tools In Air to Water Heat Pump using R410A, the service port diameter of packed valve of the outdoor unit is changed to prevent mixing of other refrigerant. To reinforce the pressure resistance, flare dimensions and opposite side dimensions of flare nut (For Ø...

  • Page 12: Recharging Of Refrigerant

    2-4. Recharging of refrigerant Recharge, if necessary, the specified amount of new refrigerant according to the following procedure. Recover the refrigerant, and check that no Open fully the handle of gauge manifold Lo, turn on the refrigerant remains in the refrigerant cycle. vacuum pump, and then perform vacuum evacuating.
  • Page 13 NOTE • Make sure that the setting is appropriate so that liquid can be charged. • A cylinder with siphon enables liquid to be charged without the cylinder turned upside down. [Cylinder with siphon] [Cylinder without siphon] Gauge manifold Gauge manifold Outdoor unit Outdoor unit Siphon pipe...

  • Page 14: Brazing Of Pipes

    2-5. Brazing of pipes Type of flux • Non-corrosive flux 2-5-1. Materials of brazing It is generally a compound of borax and boric acid. It is effective when brazing temperature is higher than 800 °C. Silver brazing metal • Active solvent Silver brazing metal is an alloy mainly composed of Most of this type of flux is generally used for silver silver and copper.
  • Page 15 5) Use the reducing valve to adjust the nitrogen gas flow speed to 0.05 m /hour or 0.02 MPa (0.2 kgf/cm 6) After the steps above, keep the nitrogen gas flowing until the pipe cools down to a certain extent. (Temperature where the pipe is cool enough to be touched by hands) 7) Remove the flux completely after brazing.

  • Page 16: Specifications

    Specifications Unit name Hydro unit HWS-802XWHM3-E, 802XWHT6-E Outdoor unit HWS-802H-E Heating capacity *1 (kW) Cooling capacity *2 (kW) Variable range of compressor frequency 10 - 70 Hz Power source Single phase 50Hz 230V Operation mode Heating Cooling Electric characteristic *1 *2...
  • Page 17 Unit name Hydro unit HWS-1402XWHM3-E, 1402XWHT6-E, 1402XWHT9-E Outdoor unit HWS-1102H-E HWS-1402H-E Heating capacity *1 (kW) 11.2 14.0 Cooling capacity *2 (kW) 10.0 11.0 Variable range of compressor frequency 10 - 60Hz 10 - 70 Hz Power source Single phase 50Hz 230V Operation mode Heating Cooling...

  • Page 18: Outside Drawing

    Outside Drawing 4-1. Hydro unit HWS-802XWHM3-E, 802XWHT6-E HWS-1402XWHM3-E, 1402XWHT6-E, 1402XWHT9-E 2-dia.12x17 long hole (for dia.8-10 anchor bolt) 371.5 72.5 72.5 B leg part Anchor bolt long hole pitch Manometer Remote controler 2-dia.12x17 U-shape hole A leg part (for dia.8-10 anchor bolt) Hot water outlet 19.5...

  • Page 19: Outdoor Unit

    4-2. Outdoor unit HWS-802H-E...
  • Page 20 HWS-1102H-E, 1402H-E...

  • Page 21: Hot Water Cylinder

    4-3. Hot water cylinder HWS-3001CSHM3-E(-UK) HWS-2101CSHM3-E(-UK) Specification for UK only Specification for UK only HWS-1501CSHM3-E(-UK) Specification for UK only...

  • Page 22: Wiring Diagram

    (WHI) 250V (2-wire spring return) (3-wire SPST type) 1 HWS-802XWHT6-E : Installed HWS-1402XWHT6-E : Installed HWS-1402XWHT9-E : Installed HWS-802XWHM3-E : Not installed TB 05 TB 04 HWS-1402XWHM3-E : Not installed Symbol Symbol Parts name Parts name RY01 Water pump motor...
  • Page 23 5-2. Outdoor Unit...

  • Page 24: Hot Water Cylinder Unit

    5-3. Hot Water Cylinder Unit Double pole thermal cut out Blue Blue Green / Brown Yellow Brown TB03(230V) Green / Yellow TB06(TTW) TTW sensor Hot water cylinder heater Supply 230 V from hydro unit To hydro unit Cable size 1.5 mm (minimum)

  • Page 25: Key Electric Component Rating

    Key Electric Component Rating 6-1. Hydro Unit HWS-802XWHM3-E, 802XWHT6-E Model name Component name Type name Rating M3-E T6-E Circulating pump UPS025-65 K 130 AC230 V 0.54 A (MAX) Backup heater 6 kW AC 400 V (3N) 6 kW (AC230 V 3 kW –...
  • Page 26 HWS-1402XWHM3-E, 1402XWHT6-E, 1402XWHT9-E Model name Component name Type name Rating M3-E T6-E T9-E Circulating pump UPS25-80 130 AC230 V 0.83 A (MAX) Backup heater 6 kW – AC 400 V (3N) 6 kW (AC230 V 3kW compatible) Backup heater 9 kW AC 400 V (3N) 9 kW –...
  • Page 27 6-2. Outdoor Unit HWS-802H-E Component name Type name Rating Compressor DA220A2F-22L Outdoor fan motor ICF-280-A60-1 Output 60 W 4-way valve coil VHV-01AP552B1 AC230 full-wave rectifier input, alive time 10 sec or less Pulse motor valve (PMV) coil CAM-MD12TF-15 DC12 V Compressor case thermostat US-622KXTMQO-SS OFF: 125±4°C ON: 90±5°C...
  • Page 28 HWS-1102H-E, 1402H-E Component name Type name Rating Compressor DA422A3F-25M Outdoor fan motor (x2) ICF-280-A100-1 Output 100 W Reactor (x2) CH-44 1.4 mH, 25 A 4-way valve coil UKV-A038 AC230 V full-wave rectifier input, alive time 10 sec or less Pulse motor valve (PMV) coil VHV-01AP552B1 DC12 V Board...
  • Page 29 6-3. 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 2.75 KW Hot water cylinder temperature 10 kΩ (25°C) sensor – (TTW sensor) Thermal cut-out Operating temperature –...

  • Page 30: Water Heat Exchange Control Board

    6-4. Water Heat Exchange Control Board HWS-802XWHM3-E, 802XWHT6-E HWS-1402XWHM3-E, 1402XWHT6-E, 1402XWHT9-E TC sensor connector TTW sensor connector CN203 CN214 Low pressure sensor connector Remote control TFI sensor Relay board connector CN207, CN212 connector connector CN501 CN41 CN213 THO sensor connector...

  • Page 31: Outdoor Control Board

    6-5. Outdoor Control Board HWS-802H-E Reactor connection connector Electrolytic capacitors Compressor output terminals Fan motor output Power circuit protection CN202 CN300 (White) fuse CN201 F100 (250 V, 3.15 A, CN200 plastic case) Case thermostat connector CN609(Blue) 4-way valve connector CN701(White) Compressor ON output connector CN704(Blue)
  • Page 32 HWS-1102H-E, 1402H-E Compressor output terminals Fan motor output (Lower) Fan motor output (Upper) Electrolytic capacitors CN202 CN300(White) CN400(White) CN201 CN200 Case thermostat connector CN609(Blue) Power circuit protection fuse F100(250V,3.15A, plastic case) 4-way valve connector CN701(White) Compressor ON output connector CN704(Blue) External input connector CN610(Yellow) Special operation switches...

  • Page 33: Refrigeration Cycle / Water System Diagram

    Refrigeration Cycle / Water System Diagram 7-1. Water System Diagram...
  • Page 34 Installation example of water circuit The water circuit for a system without buffer tank ((1), (2), (3), (5)) requires 5 or more branches of Floor heating or Radiator etc. Less than 5 branches may cause a flow deficiency. In this case, please provide a buffer tank and secondary pumps as shown in (4).

  • Page 35: Refrigeration Cycle System Diagram

    7-2. Refrigeration Cycle System Diagram HWS-802XWHM3-E, 802XWHT6-E/802H-E Outdoor unit Hydro unit Heating / Hot-water supply Expansion vessel Defrosting / Cooling pressure Manometer sensor Water vent valve Air vent valve Backup heater Pressure switch Compressor Plate-type 4-way valve (DA220A2F-22L) water heat...

  • Page 36: Operational Description

    Operational Description This chapter describes the working circuit and control of Air to Water Heat Pump about the following operations. Item Page Basic Operation 1) Operation control 2) Hot water supply operation 36-38 3) Heating operation 4) Cooling operation Operation Mode and Control Method 1) Hot water supply operation 2) Heating operation 3) Cooling operation...
  • Page 37 Item Operation flow and applicable data, etc. Operation description 8-1. 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 control settings user-defined operation condition selection <Heating>...
  • Page 38 Item Operation flow and applicable data, etc. Operation description 8-1. 2) Hot water supply operation Hot water supply operation Basic 1. Purpose Operation Hot water supply [HOT WATER] Hot water temperature: 40 °C to 75 °C 2. Details button set to "ON" This section performs hot water supply operation according to heating...
  • Page 39 Item Operation flow and applicable data, etc. Operation description 8-1. 4) Cooling operation 1. Purpose Basic Cooling Operation 2. Details ZONE1, 2 Cooling temperature: 10 °C to 25 °C This section performs button set to "ON" cooling operation according to cooling conditions specified for Circulation pump "ON/OFF"...
  • Page 40 Item Operation flow and applicable data, etc. 8-2. The following shows the operation modes and controlled objects. Operation Operation Heating and Hot water Cooling and Hot water Mode and mode Control Method Heat pump select Heat pump select Heat pump select Heat pump select for hot water for hot water...
  • Page 41 Item Operation flow and applicable data, etc. 8-2. 2) Heating operation Operation <Operation only for ZONE1> Mode and • This operation is enabled when DP_SW12_2 ZONE1 is set to "ON" (default). Control Method • The remote controller displays settings, and only the set temperature of can be changed.
  • Page 42 Item Operation flow and applicable data, etc. 8-2. 3) Cooling operation Operation Pressing the [ZONE1, 2] button and then [OPERATION MODE] starts a cooling operation. Mode and 1) Operation start condition Control Method Pressing the [ZONE1, 2] button and then [OPERATION MODE] Heat pump operation starts a cooling operation.
  • Page 43 Item Operation flow and applicable data, etc. 8-2. 5) Simultaneous operations of "hot water supply" and "cooling" Operation For simultaneous operations of "hot water supply" and "cooling", basically cooling runs by a heat pump operation, and Mode and hot water supply by a heater operation. Control Method Hot water supply side Cooling side...
  • Page 44 Item Operation flow and applicable data, etc. 8-2. 7) Hot water boost operation Operation A hot water boost operation boils water quickly to the set temperature TSC_H = 75°C (FC_09). Mode and Control Method 1) How to operate • When pressing the [HOT WATER BOOST] button after pressing the remote controller [HOT WATER] button, a heat pump operation in progress in the heating side switches to in the hot water side, and continues the operation regardless of the hot water supply start condition, TTW <...
  • Page 45 Item Operation flow and applicable data, etc. 8-2. 8) Anti bacteria (ANTI BACTERIA) operation Operation An anti bacteria operation regularly performs a Hot water supply operation with the set temperature TSC_H = 75°C (can Mode and be set with FC_0A). Control Method 1) How to operate •...
  • Page 46 Item Operation flow and applicable data, etc. 8-2. 9) Night set back (NIGHT SET BACK) operation Operation A night set back operation performs heating at 5°K lower and cooling at 5°K temperatures against the remote controller Mode and set temperature from the setting start time (22:00) to the end time (6:00) every day. Control Method Note) •...
  • Page 47 Item Operation flow and applicable data, etc. 8-2. 11) AUTO operation An auto operation sets the water temperature TSC_F depending on the outside temperature TO by following the table Operation below. Mode and Control Method 1) How to operate • Pressing the remote controller [ZONE1, 2] button and then the [AUTO] button starts AUTO operation for heating. An operation starts at the set temperature of straight -line approximation for the following: water temperature 40°C with the outside temperature -20°C (FC), 35°C with -10 °C (T1)(FC), 30°C with 0°C (FC), 25°C with 10°C (T3), and 20°C with 20°C (TC).
  • Page 48 Item Operation flow and applicable data, etc. 8-2. 12) Nighttime low-noise operation A night time low-noise operation reduces operation frequency and the number of outdoor fan rotations for a certain period Operation during nighttime as noise control for neighborhood. Mode and Control Method Maximum operation frequency 40.2 Hz (Hot water supply/ Heating/ Cooling) Maximum fan tap...
  • Page 49 Item Operation flow and applicable data, etc. 8-3. 1) Capacity control (compressor, high-temperature release, low-temperature release) Hydro Unit Control This unit controls the compressor frequency and heater output so that the water outlet temperature matches the remote controller set temperature. 1-1) Compressor control •...
  • Page 50 Item Operation flow and applicable data, etc. 8-3. 1-2) High temperature release control Hydro Unit A heat pump operation is performed as shown in the table below according to the TC sensor detecting temperature. Control • For the detected temperature, TC (= TWO + 2 degree) of a heat pump operation is used. The values of T7 through T10 vary depending on TWI.
  • Page 51 Item Operation flow and applicable data, etc. 8-3. 2) Heater control Hydro Unit 2-1) Hot water supply operation Control During a hot water heat pump operation, the unit energizes the hot water cylinder heater (2.75 kW) when all the following conditions are met. Note that when the hot water supply set temperature (TSC_F) is reached, the unit stops energizing the heater.
  • Page 52 Item Operation flow and applicable data, etc. 8-3. 2) Control at the time of heating heater operation Hydro Unit • Controlled Object: Backup heater, Booster heater Control The backup heater control starts when 13 minutes has passed after the heating heat pump operation started. The backup heater control increases, decreases, or maintains the number of heaters every 10 minutes (FC) depending on the difference between the heating set temperature (TSC_F) and the heater outlet temperature (THO).
  • Page 53 Item Operation flow and applicable data, etc. 8-3. 3) Circulation pump control Hydro Unit One circulation pump (enhancing pump P2) can be connected to the unit in addition to the built-in circulation pump P1. Control DP_SW10-1, 3 within the water heat exchanger enables the built-in pump P1 to be set either to usual energization or only HP and backup heater energization, and also enables the enhancing pump P2 to be set either to interlocked or non-interlocked with the built-in pump.
  • Page 54 Item Operation flow and applicable data, etc. 8-3. 5) Mixing Valve control (2-temperature heating control) Hydro Unit To set different radiator unit supply temperatures or floor heating supply temperatures, the unit performs Mixing Valve Control control. When Mixing Valve "Yes" is selected, the unit controls Mixing Valve every 4 minutes (FC) based on the difference TSC_Δ T between the Zone2 set temperature and TFI (floor inlet water temperature sensor) temperature as follows: TSC_ΔT TSC_ΔT...
  • Page 55 Item Operation flow and applicable data, etc. 8-3. 7) Automatic restart control Hydro Unit The unit records operation information before a power outage and retrieves the information after the power is on again Control to restart automatically the operation with the information. 7-1) Operation during remote controller •...
  • Page 56 Item Operation flow and applicable data, etc. 8-3. 8-2) Piping freeze prevention control 2 TC and TWO activates freeze prevention regardless of a heat pump operation mode. Hydro Unit 1) Determination condition: TWO>20°C, 2*TC+TWO<-12°C is continuously detected for 30 seconds or longer. Or Control 20°C, TC+TWO<4°C is continuously detected for 30 seconds or longer.
  • Page 57 Item Operation flow and applicable data, etc. 3. Hydro Unit 10) Room temperature thermostat control (Option TCB-PCMO3E board TCB-PCM03E is necessary. Connect Control PJ17 the connection cable to the water heat exchange board CN211.) When the room thermostat is connected and heating or cooling operates with DP_SW12-4 CN210 set to ON, an room thermostat operation is...
  • Page 58 Item Operation flow and applicable data, etc. 8-4. 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 59 Item Operation flow and applicable data, etc. 8-4. 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 60 Item Operation flow and applicable data, etc. 8-4. 5) 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 indoor side (Hydro unit) control part. * Although the fan motor is a DC motor, which has non-step variable numbers of rotations, it is limited to some steps for convenience of control.
  • Page 61 Item Operation flow and applicable data, etc. 8-4. 5-2) 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 62 Item Operation flow and applicable data, etc. 8-4. 6) Defrosting control Outdoor unit This control defrosts the outdoor heat exchanger. The temperature sensor (TE sensor) of the outdoor heat exchanger control 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 63 Item Operation flow and applicable data, etc. 8-4. 7) 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 64 Item Operation flow and applicable data, etc. 8-4. 10) High temperature release control 1) To prevent excessive hi pressure rise, operation frequency is controlled by the TL sensor when cooling and by TWO Outdoor unit sensor when heating. control 2) If the TL sensor when cooling or the TWO sensor when heating detects an abnormal stop zone temperature, the compressor stops and the abnormality detection counter increments.

  • Page 65: 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 66: Matters To Be Confirmed First

    9-1. Matters to be confirmed first 9-1-1. Check the power supply voltage Check that the power supply voltage is AC230 V±23 V. If the power supply voltage is not in this range, it may not operate normally. 9-1-2. 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 67: Outline Of The Determination Diagram

    9-3. 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. 9-3-1. 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 68: How To Diagnose By Error Code

    9-3-4. How to diagnose by error code Defect mode detected by the water heat exchange O ... Possible × ..Not possible Diagnostic functional operation Number of Check abnormalities Detailed Determination and action code Backup Automat item Operational cause present ic reset confirmation Pump or flowing quantity error...
  • Page 69 Diagnostic functional operation Number of Check abnormalities Detailed Determination and action code Backup Automat item Operational cause present ic reset confirmation Pressure switch operation 1. Almost no or little water flow. The pressure switch operates for 300 2. Defect of the flow switch. ×...
  • Page 70 Diagnostic functional operation Number of Check abnormalities Detailed Determination and action code Backup Automat item Operational cause present ic reset confirmation TFI sensor error 1. Check the resistance value and × Open or short circuit in the floor disconnection of the floor-inlet temperature sensor (TFI).
  • Page 71 Defect mode detected by the outdoor unit O ... Possible × ..Not possible Diagnostic functional operation Number of Check abnormalities Detailed Determination and action code Backup Automat item Operational cause present ic reset confirmation TD sensor error 1. Check the resistance value and ×...
  • Page 72 Diagnostic functional operation Number of Check abnormalities Detailed Determination and action code Backup Automat item Operational cause present ic 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 73 Diagnostic functional operation Number of Check abnormalities Detailed Determination and action code Backup Automat item Operational cause present ic reset confirmation High pressure protection operation 1. Check that the service valve is fully open. When an abnormal stop occurs due to 2.
  • Page 74 Defect mode detected by the remote control Diagnostic functional operation Check code Determination and action Status of air- Operational cause Condition conditioning No communication between hydro Stop – Defect in the remote control power unit an remote controller supply displaying at •...

  • Page 75: Diagnosis Flow Chart For Each Error Code

    9-4. Diagnosis flow chart for each error code 9-4-1. Hydro unit failure detection [A01] Error Pump flow determination [A01] occurs Operation restarts No (No pump sound) Pump rotates Perform Flow switch is Connect flow switch air vent connected to board connector to board Excess air noise comes from inside...
  • Page 76 [A02] Error Temperature rise and error short circuit Start (TWI,TWO,THO 70°C) TWI, TWO, and THO Replace TWI, TWO, sensor characteristics are and THO sensors correct Flow switch is normal Replace flow switch Water outlet temperature is 70°C or higher Hot water from Correct water circuit boiler or other circuits does (To prevent hot water of...
  • Page 77 [A03] Error Temperature rise and error short circuit Start (TTW 85°C is detected) TTW sensor Replace TTW sensor characteristic is correct Hot water cylinder heater is energized Mg-sw (RY05) for Replace Mg-sw heater operates Operating noise at normal time At normal temperature, tank thermostat is energized Hot water cylinder...
  • Page 78 [A04] Error Freeze prevention control When the outside temperature or 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 Replace flow switch...
  • Page 79 [A05] Error Piping freeze prevention control Restart 4, TWO 4, or 4 is detected Circulation pump keeps being energized or 3 minutes passed after the start Water heat Set water heat board exchange control board DPSW11-1 to ON DPSW11-1 is ON Backup heater terminal has 230ACV ( ±...
  • Page 80 [A07] Error Pressure switch operation (Hot water supply/Heating operation) Start Flow switch is normal Replace flow switch 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 81 [A08] Error Lo pressure sensor lowering operation failure (Cooling/Defrosting operation) Start Replace flow switch Flow switch is normal 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,...
  • Page 82 [A09] Error Overheat prevention thermostat failure (Hot water supply/Heating operation) Start Put water into water circuit Water cycle contains water (Recommended: 1 - 2 Bar) Replace flow switch Flow switch is normal At normal temperature, Replace heater unit overheat preventive thermostat exchanger air vent valve is normal Replace water heat exchange control board...
  • Page 83 [A11] Error Release protection operation Start Flow switch is normal Replace flow switch 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 84 [A12] Error Heating or Hot water supply heater failure Restart Operation starts under 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 85 [E04] Error Outdoor unit operates Group address Check item code "14" of remote controller is correctly set Hydro unit Internal wiring and Correct wiring and connecting wire (1, 2, 3) connecting wire are correct CN04 connector Correct connector and and terminal block (1, 2, 3) wiring terminal block wiring are normal Check water heat...
  • Page 86 [F03] Error TC sensor failure Start TC sensor Correct TC sensor connector (CN203) is connection connected TC sensor Replace TC sensor resistance characteristic is normal Replace water heat exchange control board [F04] Error TD sensor failure Start TD sensor Correct TD sensor connector (CN603) is connection connected...
  • Page 87 [F07] Error TL sensor failure Start TL sensor Correct TL sensor connector (CN604) is connection connected TL sensor Replace TL sensor resistance characteristic (See characteristic table on page 101) is normal Replace water heat exchange control board [F08] Error TO sensor failure Start TO sensor Correct TO sensor...
  • Page 88 [F11] Error TWO sensor failure Start TWO sensor Correct TWO sensor connector (CN205) is connection connected TWO sensor Replace TWO sensor characteristic is normal (See characteristic table on page 101) Replace water heat exchange control board [F14] Error TTW sensor failure Start TTW sensor Correct TTW sensor...
  • Page 89 [F18] Error THO sensor failure Start THO sensor Correct THO sensor connector (CN206) is connection connected THO sensor Replace THO sensor characteristic is normal (See characteristic table on page 101) Replace water heat exchange control board [F19] Error THO sensor detach failure Start THO sensor Attach THO sensor...
  • Page 90 [F20] Error TFI detach failure Start TFI sensor Attach TFI sensor is attached to pipe to pipe TFI sensor Replace TFI sensor characteristic is normal (See characteristic table on page 101) TWI sensor Replace TWI sensor characteristic is normal (See characteristic table on page 101) TWO sensor Replace TWO sensor characteristic is normal...
  • Page 91 [F29] Error EEPROM failure A failure is detected in the IC10 non-volatile memory on the water heat exchanger board during a hot water supply unit operation. Replace the service board. * If the unit does not have EEPROM inserted when the power is turned on, or if EEPROM data read or write is unavailable, automatic address mode repeats.

  • Page 92: Outdoor Unit Failure Detection

    9-4-2. 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 93 Outdoor LED Check and Action procedure Check code indication (No specific description indicates outdoor unit parts.) [H02] <Indication 1> <Indication 2> [Compressor lock] Power voltage is normal. Improve power line 230ACV ± 23V Wiring connection is normal. Check and correct Compressor lead (board side, wiring connection compressor side) reactor, power lead...
  • Page 94 Outdoor LED Check and Action procedure Check code indication (No specific description indicates outdoor unit parts.) [L29] * Any of the following abnormality may occur. Seeing the LED on the outdoor board can determine which abnormality occurs. Communication failure between MCUs, Heat sink temperature sensor (TH) failure, EEPROM failure, Model not specified, Heat sink overheat failure, gas leakage detection, 4-way valve invert failure <Indication 1>...
  • Page 95 Outdoor LED Check and Action procedure Check code indication (No specific description indicates outdoor unit parts.) [P03] <Indication 1> <Indication 2> [Abnormal outlet temperature] 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...
  • Page 96 Outdoor LED Check and Action procedure Check code indication (No specific description indicates outdoor unit parts.) [P07] <Indication 1> <Indication 2> [Heat sink overheat failure] The screws are loose in motor Apply radiation grease as drive element, Q200/300/400, needed Tighten screws of outdoor control board and (Be sure to place back rectifier, DB01/02/03.
  • Page 97 Outdoor LED Check and Action procedure Check code indication (No specific description indicates outdoor unit parts.) [P19] <Indication 1> <Indication 2> [4-way valve invert failure] 4-way valve operates normally. (Check piping temperature at the time of cooling/heating operation) Temperature sensor check TE sensor CN601 TS sensor CN600 Hydro TWO sensor...
  • Page 98 Outdoor LED Check and Action procedure Check code indication (No specific description indicates outdoor unit parts.) [P20] <Indication 1> <Indication 2> [Hi pressure protection operation] Service valve is fully opened. Open fully service valve Heating season Heating operation Reset the power source and perform a trail operation according to the season.
  • Page 99 Outdoor LED Check and Action procedure Check code indication (No specific description indicates outdoor unit parts.) [P22] <Indication 1> <Indication 2> [Blower system failure] Check wiring Power voltage is normal Request power source repair (230ACV ± 23V) When not energized, the fan motor can be smoothly rotated by hand.
  • Page 100 Outdoor LED Check and Action procedure Check code indication (No specific description indicates outdoor unit parts.) No code <Indication 1> <Indication 2> [Discharge abnormality] Compressor's loss of synchronism due to rapid load change, etc. * Although the outdoor LED indicates abnormality, the compressor restarts and no abnormality is confirmed.
  • Page 101 Outdoor LED Check and Action procedure Check code indication (No specific description indicates outdoor unit parts.) [F12] <Indication 1> <Indication 2> [Suction temperature sensor (TS) failure] TS sensor connector Correct TS sensor (CN600) is connected connection TS sensor resistance Replace TS sensor characteristic is normal Replace outdoor control board [F13]...

  • Page 102: Temperature Sensor, Temperature-Resistance Characteristic Table

    9-4-3. Temperature sensor, temperature-resistance characteristic table TC, TWI, TWO, TFI, TTW, TE, TS, TO sensors TD, TL sensors Typical value Typical value Ω Ω Resistance value (k Resistance value (k Temperature Temperature (°C) (°C) (Minimum) (Standard) (Maximum) (Minimum) (Standard) (Maximum) 55.73 55.42 60.04...

  • Page 103: Operation Check By Pc Board Switch

    9-5. Operation check by PC board switch 9-5-1. Operation check mode This mode allows to check the operations of the water 2-way valve, water 3-way valve, mixing valve, and circulating pump. Operation check mode (1) Preparation • Turn all of the remote controls "OFF" for the hot water supply and heating. •...

  • Page 104: Brief Method For Checking The Key Components

    9-6. Brief method for checking the key components 9-6-1. 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 (TWI) sensor Water heat exchange temperature (TC) sensor...
  • Page 105 9-6-2. Outdoor unit Component name Check procedure Compressor Measure the resistance value of each winding with a tester. Type Resistance DA220A2F-22L Location value (802H-E) − 1.04-1.16 Ω White DA422A3F-25M − 1.04-1.16 Ω (1102,1402H-E) White Black − 1.04-1.16 Ω At 20°C Black White Black...

  • Page 106: Hydro Unit And Outdoor Unit Settings

    Hydro unit and Outdoor Unit Settings Hydro unit 1. Hydro unit Setting 1-1. Setting switch names and positions SW01 SW12 SW13 SW02 SW07 SW10 SW11 1-2. SW02 (System switching 1) SW02 Switching details Factory setting Remarks 02_1 – – 02_2 –...
  • Page 107 2. Hydro unit Function Code Setting 2-1. How to set function code <Procedure> Perform the following when no operation is in progress. Press the SET and TEST and SELECT buttons at the same time for 4 seconds or longer. (See display Specify CODE NO.
  • Page 108 Function code table Item Details First shipment Water heat exchanger capacity 0012: 802XWH**-E Depends on type 0017: 1402XWH**-E Cooling/Non-cooling switching 0000: Cooling 0001: No cooling 0001: No cooling Hot water HP operation mode upper time limit 0000: 0 mins 0120: 120 mins 0030: 30 mins Hot Water Boost operation time 0003: 30 mins...
  • Page 109 Remote controller function code table Item Details Fist shipment 24H/12H display switching 0: 24H display 1: 12H (AM/PM) display 0: 24H display Nighttime low-noise mode 0: Disabled 1: Enabled 0: Disabled Nighttime low-noise start time 0 - 23 (0:00 to 23:00) 22: 22:00 Nighttime low-noise end time 0 - 23 (0:00 to 23:00)
  • Page 110 3. Trial Operation <Procedure> A trial operation is available with an actual operation in progress or stopped. A trial operation is available in any of the hot water supply, heating, or cooling mode. The compressor starts according to the trial operation frequency. A trial operation automatically stops after 30 minutes at the longest if not stopped with the remote controller.
  • Page 111 4. Auto Curve Setting FC code setting can make flexible Auto-Curve settings. <Preparation> Press the TEST and SET and SELECT buttons at the same time for 4 seconds or longer. (See display (Make sure that no operation is in progress.) Specify an item code (FC) from among 29 to 2F with the TEMP.
  • Page 112 5. Time Setting Press the TIME button for 4 seconds or longer. (The screen moves to the time setting mode.) (See display Day, time, , and indications blink. (Time setting is available during an operation.) Specify a day to be set. Press the DAY button to select the current day.
  • Page 113 6. Scheduled Operation Setting 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. 6-1. How to set scheduled operation <Preparation>...
  • Page 114 6-2. How to start and cancel schedule operation <Operation start> Without schedule operation set, press the remote controller SCHEDULE button. blinks. Pressing the SET button during the 5-second blinking changes to lit, and the schedule operation starts. <Operation cancel> With schedule operation set, press the remote controller SCHEDULE button.
  • Page 115 8. NIGHT Operation Setting For nighttime hours, this setting changes set temperature of heating or cooling by 5k as save operation. Press the ZONE1,2 button to start a heating or a cooling operation. (See display (Nighttime operation is not available for hot water supply. Use the schedule operation.) Pressing the NIGHT button displays the...
  • Page 116 9. Anti Bacteria Setting This setting regularly raises the hot water cylinder temperature to prevent bacteria from growing. Press the HOT WATER button to start a hot water supply operation. (Normal hot water supply operation) (No anti bacteria setting is provided to heating and cooling.) Pressing the ANTI BACTERIA button displays the symbol.
  • Page 117 10. Hot Water Boost Setting This setting heats the water whenever necessary by using the heat pump and hot water cylinder heater. Press the HOT WATER button to start a hot water supply operation. (Normal hot water supply operation) Pressing the HOT WATER BOOST button displays the symbol.
  • Page 118 12. Forced Defrosting Setting The FC code setting (See 2-2) can activate the forced defrosting mode for the outdoor unit operation. (Preparation) Press the remote controller buttons, TEST , SET and SELECT , at the same time for 4 seconds or longer.(Make sure that no operation is in progress.) Specify CODE NO.
  • Page 119 14. Display Function of Set Temperature and Other Settings ■ Sensor temperature display calling <Details> This function calls the service monitor mode from the remote controller to show the data of the remote controller, the hydro unit, and outdoor unit. <Procedure>...
  • Page 120 15. Failure History Calling Function <Details> This function calls the previous failure details. <Procedure> Press the TEST and SET buttons at the same time for 4 seconds or longer to call the service check mode. The service check lights up with CODE No. "01" displayed at first, and the latest warning detail is displayed.
  • Page 121 Outdoor unit 16 Outdoor Unit Setting 16-1. 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 122 16-3. Service support functions (LED indication, Switch operation method) The following settings are available with dip switches. (1) Overview Using 3 dip switches (SW802, SW803, SW804) and 2 push-button switches (SW800, SW801) can make settings available and confirm operations. For operation Part number Specification Operation details...
  • Page 123 (2) LED indication switching (SW800, SW803 operation) (2) -1. Indication switching list Operating SW803 can switch the indications of LED D800 to D804 on the outdoor control board. Switch Function and details Abnormality indication (Current abnormality) This switch indicates the current abnormality. SW803 Without an abnormality, the lights are off.
  • Page 124 (2) -2. Abnormality indication The current abnormality and the latest abnormality (including the current one) can be identified by the LED D800 to D804 on the outdoor control board. 1) Setting all the SW803 dip switches to OFF indicates the current abnormality status. 2) Setting SW803 dip switch <1>...
  • Page 125 (2)-3. Sensor, Current, Compressor operation frequency, PMV openness indication The values detected by controller, such as temperature sensor or current values, can be easily checked. Legend) Light ---- ---- Item setting Temperature sensor ( Current Compressor PMV openness operation (pulse) frequency (r.p.s.) SW803...
  • Page 126 (3) Special operation for maintenance and inspection (SW801, SW804) SW801 and SW804 can perform the following special operations for maintenance and inspection. 1) Switches the dip switch SW804. (See the table below) 2) Presses the push-button switch SW801 for approx. 1 second. 3) Starts the functions shown below.
  • Page 127 SW804 Operation when press button switch SW801 is pressed Self-holding valve vacuum operation (Switch to heating cycle) SW804 (RY700, RY701, RY705, CN701 for check) Sets relay RY700, RY701, and RY705 to ON. (CN701 Between 1 to 4 Voltage = Approx. 325V) This function operates for 10 seconds.

  • Page 128: 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> After a repair is complete, perform a trial operation (after attaching the front panel, upper and lower cabinets, and side cabinet) and check that no abnormality including smoke or abnormal noise occurs.
  • Page 129 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.) Remote 3) Disconnect the remote controller cable from the controller holder terminal block on the back side of the remote controller.
  • Page 130 Exchange parts name Work procedure Remarks Relay board 1. How to remove MCC-1431 1) Perform the step 1-1. 2) Disconnect the connectors and lead cables connected to other parts from the relay board. 1. Connector CN01: TB 01 3P Terminal block (3P: White) CN02: Water heat exchanger board (5P: White) CN10: TB 05 9P Terminal block (9P: White) Note...
  • Page 131 Exchange parts name Work procedure Remarks Side board 1. Side board (Right) Side board (Right) 1) Perform the step 1-1. 2) Remove the fixed screws of the side board (Right). (ST1T Ø4 × 10, 5 screws) 3) Remove the fixed screws of the side board (Right) and the manometer fixing board.
  • Page 132 Exchange parts name Work procedure Remarks Expansion vessel Expansion vessel 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) Perform the step 1-1, step 5, 6, and 7. 2) Remove the fixed band of the expansion vessel.
  • Page 133 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, 6, and 10. 2) Remove the fixed screws of the pump fixing board.
  • Page 134 Exchange parts name Work procedure Remarks Flow switch 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 and step 5. 2) Remove the flow switch.
  • Page 135 Exchange parts name Work procedure Remarks Heater assembly 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, 6, 7, and 11. 2) Remove the nut of the heater connection.
  • Page 136 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 Water then remove the refrigerant and water piping. piping fixing • Perform refrigerant recovery with the outdoor unit.
  • Page 137 2. Outdoor Unit 2-1. HWS-802H-E Exchange parts Work procedure Remarks name Common procedure Note Wear gloves when performing the work. Front panel Failure to do so may cause an injury when accidentally contacting the parts. 1. How to remove 1) Stop the operation by remote controller and turn off the breaker.
  • Page 138 Exchange parts Work procedure Remarks name Outlet cabinet How to remove Water heat exchanger Outlet cabinet 1) Perform the step 1-1. 2) Remove the screws of the outlet cabinet and Motor base Paring board parting board. (ST1T Ø4 × 8, 3 screws) 3) Remove the screws of the outlet cabinet and bottom board.
  • Page 139 Exchange parts Work procedure Remarks name Electric parts 1. Control board replacement 1) Perform the step 1-1. Compressor Control board Reactor lead lead Compressor Fan motor case WARNING thermostat For 1 minute after the power is turned off, do not disassemble the inverter to prevent an electric shock.
  • Page 140 Exchange parts Work procedure Remarks name Electric parts 2. Reactor replacement 1) Perform the step 1-1. Relay connector 2) Remove the relay connector connected to the control board. 3) Cut the binding tie that binds the compressor leads and relay connectors. 4) Remove the reactor.
  • Page 141 Exchange parts Work procedure Remarks name Fan motor 1) Perform the step 1-1 and step 2. Propeller fan Turn it right to loosen 2) Remove the fan motor and the flange nut that fixes the propeller fan. • To loosen the flange nut, turn it clockwise. (Turn it counterclockwise for tightening.) 3) Remove the propeller fan.
  • Page 142 Exchange parts Work procedure Remarks name Compressor 1. Remove defective compressor Compressor lead 1) Perform refrigerant gas recovery. Piping panel (Back) 2) Perform the step 1-1 and step 2 and 3. 3) Remove the piping panel (Front). Remove screws of the piping panel (Front) and bottom board.
  • Page 143 Exchange parts Work procedure Remarks name Compressor 10) Remove the discharge and suction pipes Compressor lead connected to the compressor by using a burner. Remove Remove (Suction pipe) (Outlet pipe) WARNING When removing the piping by burning the solder, take enough care for a fire going off at the moment the wax melts if oil remains inside the piping.
  • Page 144 Exchange parts Work procedure Remarks name Compressor 2. Attach the compressor Compressor lead 1) Attach the compressor in the reverse order of the Compressor Wind ferrite core with lead compressor lead for 4 times. removal. Note) • Be sure to replace the compressor lead after the compressor replacement.
  • Page 145 Exchange parts Work procedure Remarks name Compressor 3. Vacuuming 1) Connect the vacuum pump to the charge port of Compressor lead the gas piping valve to operate the vacuum pump. 2) Perform vacuuming until the vacuum low pressure gauge shows 1(mmHg). Note) Open fully the pulse motor valve before vacuuming.
  • Page 146 Exchange parts Work procedure Remarks name Fan guard 1. How to remove 1) Perform the step 1-1 and step 2. Bellmouth Outlet cabinet Note Perform a replacement work on cardboard or cloth to prevent the product from being damaged. 2) Remove the outlet cabinet and put with the fan guard side down.
  • Page 147 2-2. HWS-1102H-E, 1402H-E Exchange parts Work procedure Remarks name Common procedure Note Wear gloves when performing the work. Front panel Failure to do so may cause an injury when accidentally contacting the parts. 1. How to remove 1) Stop the operation by remote controller and turn off the breaker.
  • Page 148 Exchange parts Work procedure Remarks name Outlet cabinet How to remove Outlet cabinet Heat exchanger 1) Perform the step 1-1. 2) Remove the screws of the outlet cabinet and Motor base Paring board parting board. (ST1T Ø4 × 8, 4 screws) 3) Remove the screws of the outlet cabinet and bottom board.
  • Page 149 Exchange parts Work procedure Remarks name Electric parts 1. Control board Fan motor (upper) Control board replacement 1) Perform the step 1-1. Compressor case Reactor lead WARNING thermostat For 1 minute after the power is turned off, do not disassemble the inverter to prevent an electric shock.
  • Page 150 Exchange parts Work procedure Remarks name Electric parts 2. Reactor Binding tie replacement 1) Perform the step 1-1. (Compressor lead, Reactor lead) Reactor lead 2) Remove the reactor lead connected to the control board. Control board CN05 White, CN06 White 3) Cut the binding tie that binds the compressor leads and fan motor leads.
  • Page 151 Exchange parts Work procedure Remarks name Fan motor 1) Perform the step 1-1 and step 2. Turn it right Propeller fan 2) Remove the fan motor and the flange nut that fixes to loosen the propeller fan. • To loosen the flange nut, turn it clockwise. (Turn it counterclockwise for tightening.) 3) Remove the propeller fan.
  • Page 152 Exchange parts Work procedure Remarks name Compressor 1. Remove defective compressor Piping panel (Front) Compressor lead 1) Perform refrigerant gas recovery. 2) Perform the step 1-1 and step 3. 3) Remove the piping panel (Front). Remove screws of the piping panel (Front) and bottom board.
  • Page 153 Exchange parts Work procedure Remarks name Compressor 2. Attach the compressor Wind ferrite core with Compressor lead 1) Attach the compressor in the reverse order of the compressor lead removal. Compressor lead for 4 times Note) • Be sure to replace the compressor lead after the compressor replacement.
  • Page 154 Exchange parts Work procedure Remarks name Pulse motor valve coil 1. How to remove 1) Perform the step 1-1. Recess Pulse motor valve body 2) Remove the coil from the pulse motor valve body by pulling upward while rotating the coil. 2.

  • Page 155: 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 (HWS-802**-E, 1402**-E) 1. Insulation measurement (Power source circuit/ Heater Annually Insulation measurement with a mega tester circuit) 2.

  • Page 156: Part Exploded View, Part List

    Part Exploded View, Part List Hydro Unit...
  • Page 158 Number of pieces per unit Safety Location HWS- HWS- HWS- HWS- HWS- Part No. Description 1402XW 1402XW 1402XW 802XWH 802XWH HM3-E HT6-E HT9-E M3-E T6-E 37500802 CABINET, FRONT 37500800 PLATE, UP 37500801 PLATE, SIDE 37500803 PLATE, DN, ASSY 37566705 REMOTE CONTROLLER 37546861 PIPE ASSY, WATER HEAT EXCHANGER 37546862...
  • Page 159 Outdoor Unit (HWS-802H-E)
  • Page 160 Number of pieces per unit Safety Location Part No. Description HWS-802H-E 43019904 HOLDER, SENSOR 43032441 NIPPLE, DRAIN 43041798 COMPRESSOR, DA220A2F-22L 43046493 COIL, PMV 43046451 VALVE, 4-WAY, STF-0218G 43047246 BONNET, 3/8 IN 43047669 NUT, FLANGE 43049739 CUSHION, RUBBER 43050407 THERMOSTAT,BIMETAL 43063317 HOLDER,THERMOSTAT 43100437 PANEL, FRONT, PIPING...
  • Page 161 Inverter Assembly (HWS-802H-E) Reactor Control board assembly Bushing Collar Fuse Terminal (3P) Terminal 3P Sensor assembly (F4) Sensor holder (TO) TD, TL sensor Sensor holder (TE) Sensor assembly (F6) Sensor holder (TS) TS, TE, TD sensor Sensor holder (TD)
  • Page 162 Number of pieces per unit Safety Location Part No. Description HWS-802H-E 43050425 SENSOR ASSY, SERVICE 43063325 HOLDER, SENSOR 43150319 SENSOR ASSY, SERVICE 43155188 REACTOR, CH-56-2Z-T 43160565 TERMINAL BLOCK, 3P, 20A 43160581 TERMINAL 43160589 FUSE 43163055 HOLDER, SENSOR 43163059 SPACER, BUSH 43163060 SPACER, COLLAR 4316V387...
  • Page 163 Outdoor Unit (HWS-1102H-E, 1402H-E)
  • Page 164 Number of pieces per unit Safety Location Part No. Description HWS-1102H-E HWS-1402H-E 43019904 HOLDER, SENSOR 43032441 NIPPLE, DRAIN 43041794 COMPRESSOR, DA422A3F-25M 43047246 BONNET, 3/8 IN 43047669 NUT, FLANGE 43049739 CUSHION, RUBBER 43050407 THERMOSTAT,BIMETAL 43063317 HOLDER,THERMOSTAT 43097212 43100437 PANEL, FRONT, PIPING 43100438 PANEL, BACK, PIPING 43100439...
  • Page 165 Inverter Assembly (HWS-1102H-E, 1402H-E) Reactor Control board assembly Bushing Collar Fuse Terminal (3P) Terminal 3P Sensor assembly (F4) Sensor holder (TO) TD, TL sensor Sensor assembly (F6) Sensor holder (TE) TS, TE, TO sensor...
  • Page 166 Number of pieces per unit Safety Location Part No. Description HWS-1102H-E HWS-1402H-E 43050425 SENSOR ASSY, SERVICE 43063325 HOLDER, SENSOR 43150319 SENSOR ASSY, SERVICE 43158190 REACTOR 43160565 TERMINAL BLOCK, 3P, 20A 43160581 TERMINAL 43160589 FUSE 43163055 HOLDER, SENSOR 43163059 SPACER, BUSH 43163060 SPACER, COLLAR 4316V357...

This manual is also suitable for:

Hws-802xwht6-eHws-802h-eHws-1402xwht6-eHws-1402xwht9-eHws-1102h-eHws-1402h-e ... Show all

Table of Contents