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SERVICE MANUAL - Cool Designs Ltd

1. Z WARNING Option Perform the grounding from the Remote TWO THO option earth terminal in the terminal controle f block of th id HWS AMS11E ies TW lock of the outdoor unit Remote E Color indentification controller S gt AV HWS AMS11E 2 G 2 BLK BLACK BLU BLUE N CAUTION 37 oe 57 2 BRW BROWN GRN GREEN Le eem GRY GRAY ORANGE Electric shock may happen 7 T PNK PINK RED RED Don t touch the electric parts WHI WHITE YEL YELLOW x5 x x xx x x zx B 2 m zm 4 TE Te Byz 13 nye a Qoo 12 i 0000000 Option ce WHI CN203 CN204 CN205 CN206 CN207 CN212 214 CN213 TD iA pida CRIO BLU YEL
2. No Component name Type name Rating M3 E T6 E 1 Circulating pump UPS025 65 130 230 V 0 54 2 Backup heater 6 kW T AC 400 3N 6 kW AC230 V 3 kW compatible 3 Backup heater 9 kW AC400V 3N 9 kW Water heat exchange 10 kQ 25 C 4 temperature sensor TC sensor 5 Water inlet temperature sensor o 10 KQ 25 C TWI sensor 6 Water outlet temperature sensor 10 25 TWO sensor Heater outlet water temperature 10 kQ 25 C 7 sensor THO sensor 8 Floor inlet temperature sensor 5 10 25 C TFI sensor 9 Pressure switch Operating pressure 4 15 MPa 0 0 3 MPa 10 Low pressure sensor Operating pressure 0 20 MPa 11 Bimetal thermostat auto Operating temperature 75 3 C DC42 V 0 2A is Bimetal thermostat single 6 Operating temperature 95 5 C AC250 V 16A operation 13 Flow switch Operating flowing quantity 13 L min 14 Output board OP OP OP TCB PCIN3E 230 V0 5ADC24V1A 15 Input board OP OP OP Contact input 16 Remote control HWS AMS11E 47 Water 3 way valve terminal AC230V0 1A 2Wire 3Wire SPST SPDT type mountable 18 Water 2 way valve terminal AC230 V 0 1 A 2Wire type mountable 49 Mixing valve terminal AC230V0 1A 3Wire SPST SPDT type mountable 20 Circulating pump terminal AC230 V 1 0A 21
3. Anchor bolt long hole pitch Manometer Remote controler Er leg part 2 dia 12x17 U shape hole for dia 8 10 anchor bolt Hot water outlet 116 connecting pipe 1 1 4 Gas line dia 15 88 Liquid line dia 9 52 Water inlet connecting pipe 1 1 4 17 4 2 Outdoor uni HWS 802H E ejou ge eiou edeus n 1 21 691 9 uonoeuuoo 526 0 uonoeuuoo Z jo samo 104 21 ejou jeuondo uoruod jo sjrejeq y uoniod jo sjrejeq yoq exeiui eounos 1epno pue jepno Buidid uonduoseq 88 x OZ ejou 9 ejou Buoj 21 ejou Sz ejou 18 1402H E HWS 1102H E ejou
4. Related FC FC No Setting item Default Setting available range Remote controller Night set back start Time setting 22 00 0 00 23 00 OE Remote controller Night set back end Time setting 6 00 0 00 23 00 OF 26 Night set back setting Temperature width 5 deg 3 20 deg 10 FROST PROTECTION operation A frost protection operation performs heating at the set temperature RSC_F 15 C FC 1 How to operate Pressing the remote controller ZONE1 2 button and then the FROST PROTECTION button starts a heating operation at the set temperature of 15 C Pressing again the FROST PROTECTION button cancels the FROST PROTECTION operation The remote controller displays F as the temperature during FROST PROTECTION A set temperature change during a FROST PROTECTION operation cancels the operation Related FC FC No Setting item Default Setting available range 3A FROST PROTECTION Yes No 1 Yes 0 No 3B FROST PROTECTION Set temperature 15 C 10 20 45 Item Operation flow and applicable data etc 8 2 Operation Mode and Control Method 11 AUTO operation An auto operation sets the water temperature TSC_F depending on the outside temperature TO by following the table below 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 tempe
5. Component name CSH CSH CSH Type name Rating M3 E M3 E M3 E UK UK UK 1 Hot water cylinder heater AC230 V 2 75 KW Hot water cylinder temperature 10 kQ 25 C 2 sensor TTW sensor 3 Thermal cut out 5 6 6 Operating temperature Manual reset 82 C 3k 2k Applied 28 6 4 Water Heat Exchange Control Board HWS 802XWHM3 E 802XWHT6 E HWS 1402XWHM93 E 1402XWHT6 E 1402XWHT9 E TC sensor connector TTW sensor connector CN203 CN214 Relay board connector Remote control sensor Low pressure sensor connector CN501 connector connector CN207 CN212 CN41 CN213 THO sensor connector CN206 TWI sensor connector CN204 TWO sensor connector CN205 1 e Pressure switch connector EA CN201 Overheat protection thermostat input connector CN202 Flow switch connector Option board ENE connector CN208 CN211 Transformer connector CN102 BRAS EST ECE Built in LI Ej Ha T M Transformer input connector ot water cylinder CN101 drive connector CN601 3WV drive connector EE AC power supply connector 1 ag CN100 Vas ND Serial input connector CN305 CN602 Mixing valve drive Backup heater 1 drive Backup heater 2 drive connector connector connector CN606 CN604 CN605 29 6 5 Outdoor Control Board HWS 802H E Reactor connection connector El
6. ee Pa tke EG RELAX GUB DE Su eie 17 4 2 OutdOOr Uuhltz usse tp e xau e E RM B EM SA E ELI Iain 18 4 3 Hot water 2 el Rn 20 5 Wiring Diagrami Sotto pte FRIES S IUD acta ERE C EE Us 21 5 1 Unit oe E aa EDS het e Eu dedere ES px SE ad do eu ars 21 b 2 Outdoor UNM o tet 22 5 3 Hot Water Cylinder ee eee eae 23 6 Key Electric Component 24 6 1 hydro Unity acess eo og Pee Pre a eee al ae Be od ae Marge Ed ee 24 6 2 Outdoor Unlt een anaes dre AE Ae dedere Msi qo a ea Ae eed 26 6 3 Hot Water Cylinder Unit 0 0 20 ele mnn 28 6 4 Water Heat Exchange Control 29 6 5 Outdoor Control e hn 30 7 Refrigeration Cycle Water System Diagram 32 7 1 Water System Diagram 32 7 2 Refrigeration Cycle System 34 6 Operational Description rau AIR Rd RRR GRR EE 35 9 Method of Defect Diagnosis 0 ccc eee 64 9 1 Matters to be confirmed 51 llli 65 9 1 1 Check the power supply voltage 65 9 1 2 Check for any miswiring of the connection cables between the hyd
7. 2 Discharge temperature release control This control detects an abnormality of the refrigerant cycle or compressor to perform failure prevention This control reduces operation frequency if the PMV control does not lower the outlet temperature or if the outlet temperature rapidly rises The frequency control is broken down to the unit of 0 6 Hz to stabilize the cycle If the discharge temperature detects the abnormal stop zone the compressor stops and then restarts after 150 seconds The abnormality detection counter is cleared when the operation continues for 10 minutes If detected 4 times the error code is displayed and the compressor does not restart An abnormality could occur due to too less refrigerant PMV defective or cycle stuck For details about an error displayed see the check code list TD C Abnormal stop 111 Frequency normal down 109 Frequency slow down 106 EN Frequency hold 103 Frequency slow up 96 up to the point instructed As instructed 57 Item Operation flow and applicable data etc 8 4 Outdoor unit control 3 Current release control The number of compressor rotation is controlled so that current value of the compressor drive circuit does not exceed the specified value The outdoor unit detects the input current The outside air temperature is detected and used to set the specified value of current The number of compressor rot
8. RED WHI BLU WHI WHI cN208 Relay Ki fs __ Boiler control O P 10 BLU 2 A eR IRIS neo oo Aa 1217 Kef D Alerm oP EH 11 BLU 20 TBI CHE E SIS San lay quiso i HAS 12 cno2 B B GPN YEL CH13 WHI BRW TUO RN beide a AU d Be Relay Operation O P MTS mY pace GR MCC 1217 NT SEN Defrost WHI J20 TBi Relay gt p c board YEL ra J4 o 0 4 MCC 1431 jYEL Fores Photocoupler input SI Emergency stop uP 2 H RED YEL P c board 70 4 Hot water cylinder P C board SAVE MCC 1214 thermostat YP MOCHTSTI Du jm IW es Photocoupler input a ona penoad 251 Cooling thermostat E o DL EASY ccu Healing thermostat I P amp ap NZ TBi 5d Xe Swot Cy VEL 3 woe CN200 799 ee Ee Zs Flow switch 8 g RED RED amp LIH CN201 High pressure switch swio SWi2 SWi3 WHI 4 15MPa 8199 003 2000 2002 E m CN202 Thermal protector auto swos YEL 723 8 00 Y E WHI CN102 a 38 WHI gt ja 15 5162 53154 RY606 RY607 Susi gt ransformer e 4 Rus
9. jeoo paziiajoy 1q 01 206 1 seyem TAL T ainssalg fee Ssed g ee el XK peunoo4d Ajjeooj Jayem 10 uleIq 22901 JaBueyoxe yeay O op MS MO 9L jun peunooud Ajeooj peunooud Ajeoor d Josuas ainssaid Jeureds MIE L 10 Aem c Jejeau dmyoeg YyoMs 55 4 09 96 195 ejBuis J0j98joJd 2001 195 Jesse uoisuedx3 1 Ajpeoo 7 Aem g XK Jeqg ion Cycle Water System D 5 1901 nee ov 8 1195 ssed Ag Sunnat 1 mae ae i one I p 201991024 lt Kjejes O eoo 1 Po fe S LLLI 1 1 je90 Jayeay jejsoog Jegg 198 AACA eunsseld BAJA JUBA Ss ue4 7 1 Water System Diagram 7 Refr 32 Installation example of water circuit 1 Hydro unit 2 Shower Bath Kitchen
10. ges n 10 to 15 minutes after the heating i operation starts the lowest value of lt lt MD is recorded as and the 2 c25 lowest temperature of To as ToO Inside brackets For 802H E To Normal A Zone Maintain TE ToO To 2 3 C for 20 secs B Zone Maintain TEO TE ToO To 2 2 C for 20 secs C Zone Maintain x TE lt 23 C for 20 secs 1102 1402H E Maintain TE 25 C for 20 secs 802H E D Zone Accumulate compressor operation status of TE 2 C for 150 mins To Normal A Zone Maintain TE gt 3 C 20 secs B Zone Maintain TEO TE 2 2 C for 20 secs C Zone Maintain 2 TE lt 23 C for 20 secs 1102 1402H E Maintain TE 25 C for 20 secs 802H E D Zone Accumulate compressor operation status of TE 2 C for 150 mins Jumper switching O Short circuit x Open J805 J806 d 1102 1402H E d 802H E 150 mins Factory setting 150 mins Factory setting 90 90 mins 60 60 mins 30 30 ON i Compressor orr ON Outdoor fan off EERS EE ON 4 way valve OFF 500pulse 200pulse Outdoor PMV 61 Item Operation flow and applicable data etc 8 4 Outdoor unit control 7 Winding heating control 1 This cont
11. No Replace heater unit exchanger air vent valve Yes Replace water heat exchange control board or overheat preventive thermostat failure Replace water heat exchange control board or overheat preventive thermostat failure After the control board is replaced if the same operation repeats the overheat preventive thermostat is determined as defective does not operate at 75 C 81 A11 Error Release protection operation No Flow switch is normal Yes Excess air noise comes from inside pump Secure water circulation amount Circulation flow shortage Chattering noise comes from flow switch No TWI sensor is No attached to pipe Yes TWI and TWO sensor characteristics Replace water heat exchange control board No Remove sufficiently excess air Waste stuck inside water circuit 12 M or longer water pipe to a branch or 5 or less branches 82 Replace flow switch Remove waste Place buffer tank and the second pump Attach TWI sensor Replace TWI or TWO sensor A12 Error Heating or Hot water supply heater failure Restart Operation starts under 10 TWI lt 20 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 2 1590 nor TTW 2 20 C is met Wate
12. lt 50 C 10 5 14 1 14 1 39 lt lt 45 14 0 14 1 16 4 lt 39 16 0 14 1 16 4 TO abnormal 10 5 14 1 14 1 58 Item Operation flow and applicable data etc 8 4 Outdoor unit control 5 Outdoor fan control The outdoor side control part controls the number of fan motor rotations by receiving an operation instruction from the 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 The number of fan tap rotation allocation rpm w1 W2 w3 W4 w5 W6 ws 802H E 200 230 260 300 340 380 420 460 1102 Upper 200 240 240 260 320 380 480 500 1402H E Lower 200 200 200 280 360 400 500 520 w9 WA WB wc WD WE 802H E 520 570 600 630 670 710 740 1102 Upper 530 610 640 660 720 780 890 1402H E Lower 550 630 660 700 740 820 910 5 1 Cooling fan control The TL sensor TO sensor and operation frequency control the outdoor fan The control is performed by 1 tap of the DC fan control 14 taps For 60 seconds after the start the maximum fan tap for each zone that is shown in the following table is fixed After that the fan is controlled according to the TL sensor temperature TL C WE ta 58 Sol een 1 tap 20 secs Up to the maximum number of rotation fo
13. 2C Set temperature when out side air temperature is 20 C 40 C 20 55 C 2D Set temperature when out side air temperature is 10 C T1 35 C 20 55 C 2E Set temperature when out side air temperature is 0 C 30 C 20 55 C 2F Set temperature when out side air temperature is 10 C T3 25 C 20 55 C 30 Set temperature when out side air temperature is 20 C 20 C 20 55 C 31 Auto Curve ratio of 80 0 100 ZONE2 46 Item Operation flow and applicable data etc 8 2 12 Nighttime low noise operation Operation A night time low noise operation reduces operation frequency and the number of outdoor fan rotations for a certain period Mode and during nighttime as noise control for neighborhood Control Method Maximum operation frequency 40 2 Hz Hot water supply Heating Cooling Maximum fan tap 460 rpm 802H E 500 rpm 1102H E 1402H E The nighttime low noise operation is enabled disabled by changing the remote controller FC 09 How to set 1 Press the TEMP and TEST 2 button at the same time for 4 seconds longer Shifted to the nighttime low noise setting mode The Code No field displays 09 the DATA 0000 gamma and 48 being displayed blink 2 Press TIME to set enable 1 or disable Pressing SET change DATA and display to be lit and the setting is confirmed When 1 as enable is set the nighttime low noise setting is enabled the control start
14. 2Wire 3Wire SPST SPDT type mountable 18 Water 2 way valve terminal AC230 V 0 1 A 2Wire type mountable 19 Mixing valve terminal o d B E 3Wire SPST SPDT type mountable 20 Circulating pump terminal AC230 V 1 0A 21 Booster heater terminal AC230 V 1 0A 22 Fuse AC 250 V 30 A O AT Applied OP Optional accessory 25 6 2 Outdoor Unit HWS 802H E No Component name Type name Rating 1 Compressor DA220A2F 22L 2 Outdoor fan motor ICF 280 A60 1 Output 60 W 3 4 way valve coil VHV 01AP552B1 AC230 full wave rectifier input alive time 10 sec or less 4 Pulse motor valve PMV coil CAM MD12TF 15 DC12V 5 Compressor case thermostat US 622KXTMQO SS OFF 125 4 ON 90 5 6 Reactor CH 56 5 8 mH 18 5 A 7 PC board MCC 1571 Input 19 AC230 V 23 V 50 60 Hz 26 HWS 1102H E 1402H E No Component name Type name Rating 1 Compressor DA422A3F 25M 2 Outdoor fan motor x2 ICF 280 A100 1 Output 100 W 3 Reactor 2 CH 44 1 4 mH 25 4 4 way valve coil UKV A038 AC230 V full wave rectifier input alive time 10 sec or less 5 Pulse motor valve PMV coil VHV 01AP552B1 DC12 V 6 Board MCC 1560 Input 32 AC230 V 23 V 50 60 Hz 7 Compressor case thermostat US 622KXTMQO SS OFF 125 4 ON 90 5 27 6 3 Hot Water Cylinder Unit No Model name 1501 2101 3001
15. 4 Check the water inlet water outlet and heat exchange TWI TWO TC sensors Piping antifreeze operation 1 Check the heater power circuit Activating the heater under the condition Power supply voltage breaker of TWO lt 4orTWI lt 4orTHO lt 4 does not power supply connection 05 achieve TWO TWI THO2 5 C after 30 2 Check the water inlet water outlet 1 78 67 Diagnostic functional operation Number of Check naf abnormalities Detailed code Operational cause Backup Automat Determination and action for item 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 A07 sec continuously during the heat pump O x 3 On load operation under the above 1 79 operation conditions 4 Defect in the pressure switch Low pressure sensor operation error 1 Almost no or little water flow The low pressure sensor detected 0 2 2 Defect of the flow switch Ads MPa or less 3 On load cooling prolonged 8 80 defrosting a lot of frost formation under the above conditions 4 Defect in the low pressure sensor 2 Overheat protection operation 1 No water heating without water or When the thermostat of the backup no water flow 2 A09 heater activates during the operation of T 2 Defect of the flow switch T the heat pump or backup heater When the thermostat operat
16. A room with no ventilation may cause carbon monoxide poisoning 3 Keep away flammable materials The materials may catch the fire of a welder Use refrigerant carefully Check the refrigerant name to use the tools and members appropriate for the refrigerant A product using the refrigerant R410A has the refrigerant name prominently displayed on its outdoor unit In addition the diameter of the service port is changed from that of the conventional R22 to prevent incorrect filling Never use refrigerant other than R410A for Air to Water Heat Pump using R410A Also never use R410A for Air to Water Heat Pump using other refrigerant such as R22 A mixture of RA10A with different ones excessively raises the pressure in the refrigerant cycle leading to an injury due to burst Do not make additional charge of the refrigerant An additional charge when refrigerant gas leaks changes the refrigerant composition in the refrigerant cycle causing the characteristics change of the Air to Water Heat Pump or excessive high pressure in the refrigerant cycle with more than the specified amount of refrigerant charged This may cause burst or an injury If the refrigerant gas leaks perform refrigerant recovery or other operation to make the Air to Water Heat Pump contain no refrigerant and then perform vacuuming After that refill the unit with the defined amount of liquid refrigerant Never charge refrigerant exceeding the amount specified Whe
17. A07 Error Pressure switch operation Hot water supply Heating operation Replace flow switch Remove waste Place buffer tank and the second pump Lower set temperature Attach TWO sensor Replace pressure switch A08 Error Lo pressure sensor lowering operation failure Cooling Defrosting operation No Flow switch is normal Replace flow switch Yes Remove sufficiently excess air Secure water circulation amount Waste stuck inside noise comes from water circuit inside pump Remove waste 12 M or longer water Place buffer tank and the second pump pipe to a branch or 5 or less branches Chattering noise comes from flow switch No Circulation flow shortage operation at low outside emperature and at 15 C or lowe set temperature Yes Raise set temperature Cooling overload operation No Defrosting akes 15 mins or longer Frost remains Yes Defrost outdoor unit where frost remains No No Lo pressure sensor is normal Replace lo pressure sensor Yes Replace water heat exchange control board 80 A09 Error Overheat prevention thermostat failure Hot water supply Heating operation No Put water into water circuit Water cycle contains water Recommended 1 2 Bar Yes No Flow switch is normal Replace flow switch Yes At normal temperature overheat preventive thermosta is normal
18. Diff 2K Normal operation When A02 error appeared the built in pump will stop 55 Item Operation flow and applicable data etc 3 Hydro Unit 10 Room temperature thermostat control Option Control board is necessary Connect 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 set to ON an room thermostat operation is performed Terminal label 10 1 Heating thermostat operation When the heating room thermostat is OPEN the usual heating AUTO operation is performed After 30 minutes has passed if the heating room thermostat continues to be in the OPEN status the operation raises the water temperature by 1 degree every 30 minutes The same heater control as that of the usual HP operation applies to the backup heater and booster heater When the heating room thermostat is CLOSE the heat pump performs thermostat off During the thermostat off the operation lowers the set water temperature by 1 deg every 30 minutes When the thermostat off is completed the backup heater and booster heater stops being energized 10 2 Cooling thermostat operation When the cooling room thermostat is CLOSE the usual cooling operation is performed Initial set water temperature 20 C After 30 minutes has passed if the room thermostat continues to be in the OPEN status the operation lowers the water tempe
19. 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 SW801 i SW804 SS e Display change over switches adii SW800 SW808 E Temperature sensor connectors TL CN604 White TD CN603 White TO CN602 Yellow TE CN601 White TS CN600 White DA EMT A Alive abnormal display LEDs D800 804 Yellow D805 Green Power supply connection lead wires PMV connector P01 Red A e CN710 White P02 White 4 way valve protection fuse PO3 Black Initialization switch F700 250V 3 15A SWe02 plastic case Earth lead wire Connecting cable connector PO9 Black Hydro outdoor communication CN04 White signal LEDs D503 Green Outdoor gt Hydro Connecting cable protection fuse 0502 Amber Hydro gt Outdoor J F03 250V 10A Power supply protection fuses F01 250V 25A 31 SE ulejs s JOY 2007 1 10H Ajjedo yue sayn p T gt inden H pi M 20014 y oX MASZ LO Jayeay 1eput MAYL LLS yun 100pinO peunooud A je90 oy 42 PIE 2 28 1501 yenuew yno jno euueu AO0 2OV
20. OFF When TWI lt TSC_F e zone in the right figure is met the thermostat status OFF is selected 3 Operation stop condition When either of the following conditions is met the cooling operation stops The remote controller gives a stop instruction The operation is switched to heating 1 When the outside temperature is 10 C or below cooling does not start even if the TWI temperature falls into d zone Related FC 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 TWI Heat pump operation cooling TSC F Temperature set with remote controller TSC F Diff 2k Thermostat off operation TSC is a cooling temperature set with the remote controller FC No Setting item Default Setting available range 02 Cooling mode availability 1 No 0 Yes 18 Upper limit of cooling setting temperature 25 18 30 C 19 Lower limit of cooling setting temperature 10 10 18 C 4 Simultaneous operations of hot water supply and heating At the time of Hot water supply and Heating simultaneous operation the operation mode is select as follows depending on the outside air temperature f zone Operation with hot water supply priority A heat pump operation is performed in the hot water supply side and a heating operation in the heating
21. Setting the flow switch to On or OFF determines whether water flows in the water heat exchanger Model Criteria for water flowing HWS 802 E HWS 1402 E Criteria for water not flowing Flow 13 L min or more Flow less than 13 L min Flow 17 5 L min or more Flow less than 17 5 L min When start the hot water supply heating or cooling operation failure to determine whether water flows does not energize HP the backup heater and booster heater The A01 error code display also blinks in this case 52 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_A T between the Zone2 set temperature and floor inlet water temperature sensor temperature as follows TSC AT 2 lt TSC AT 2 lt TSC AT lt 2 2 TSC AT Control value 1 step Open 0 step 1 step Close Initial value Driving range 1 step Control cycle 6 0 12 3 WV move 7 5 degs 4 mins FC For 2 temperature control DP_SW12 3 Zone2 Yes must be selected Related FC FC No Setting item Default Setting available range Mixing Valve operation time 60 30 240 secs 59 Mi
22. Floor heating Outdoor unit 3 Shower Bath Kitchen HEATING ONLY Panel radiator 2 way valve HEATING COOLING Outdoor unit 1 zone 4 Outdoor unit 1 zone 5 Shower Bath Kitchen AGA Outdoor unit 6 Shower Bath Kitchen AGE Conventional boiler Hot water tank Temp sensor Floor heating Outdoor unit 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 33 7 2 Refrigeration Cycle System Diagram HWS 802XWHM3 E 802XWHT6 E 802H E Outdoor unit Heating Hot water supply Defrosting Cooling Low pressure sensor Pressure switch Plate type DA220A2F 22L water heat exchanger TE Outdoor heat exchanger Accumulator 1800 cc 1 1 1 1 1 Compressor 1 1 1 1 1 Hydro unit Expansion vessel Manometer o Water vent valve C Air vent valve Backup heater Safety valve C Circulating pump UPS025 65 130 Flow switch VH 8706 HWS 1402XWHM3 E 1402XWHT6 E 1402XWHT9 E 1102H E 1402H E Outdoor unit Heating Hot water supply Defrosting Cooling pressure u sensor Pressure switch DA422A3F 25M STF 0401G wale heat exchanger Pulse motor val
23. TWO and TWI sensors A05 Error Piping freeze prevention control Restart TWI lt 4 TWO lt 4 or THO lt 4 is detected Circulation pump keeps being energized or 3 minutes passed after the start Water heat exchange control board DPSW11 1 is ON No Yes Backup heater terminal No has 230ACV 23V Yes Power is connect to No built in heater termina Yes No Backup heater NG Backup heater element is conductive Yes TWI TWO THO sensor characteristics No See characteristic table in page 101 Replace water heat exchange control board 78 Set water heat board DPSW11 1 to ON Place power cable for backup heater Set breaker for backup heater to ON or Check indoor electronic wiring Replace backup heater and safety valve Replace TWI TWO and THO sensors No Flow switch is normal Yes Remove sufficiently excess air Excess air noise comes from inside pump Secure water circulation amount Waste stuck inside water circuit 12 M or longer water pipe to a branch or 5 or less branches Chattering noise comes from Circulation flow shortage Operation at high outside and at 50 C or highe Yes TWO sensor is attached to pipe No Yes Pressure switch No is normal Yes Replace water heat exchange control board 79
24. The remote controller should be shipped with the hydro unit Use two 1 5 meter wires to connect the hydro unit with the remote controller 4 The outdoor unit operating noise is measured at the point of 1m away from the unit back surface center and 1m high from the ground The hydro unit operating noise is measured at the point of 1m away from the unit front surface center The value of the operating noise varies depending on room structure where the unit is installed 5 Do not leave the hydro unit at 5 C or below 6 Check the water piping for leakage under the maximum operating pressure 15 Unit name Hydro unit HWS 1402XWHM3 E 1402XWHT6 E 1402XWHT9 E Outdoor unit HWS 1102H E HWS 1402H E Heating capacity 1 KW 112 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 Heating Cooling Electric characteristic 1 2 Hydro unit Current A 0 63 0 61 0 67 0 63 Power kW 0 135 0 130 0 145 0 135 Power factor 93 2 92 7 94 0 93 2 Outdoor unit Current A 10 14 14 88 13 57 17 47 Power kW 2 265 3 39 3 005 3 945 Power factor 96 9 99 1 96 4 98 1 Total Starting current A 10 77 15 49 14 24 18 10 Operating noise 1 2 4 Hydro unit dB A 29 29 29 29 Outdoor unit dB A 49 49 51 51 Coefficient of performance 1 2 4 66 2 84
25. compressor frequency by 3 Hz every O down 10 secs Ard e _ _ Keep compressor frequency Forcible stop TC TWO TWI T7 T8 T9 T10 T11 TWI 10 10 0 8 0 6 0 4 0 3 0 10 TWI 15 10 5 8 5 6 5 4 5 3 0 15 TWI 20 11 0 9 0 7 0 5 0 3 0 20 lt TWI 11 5 9 5 7 5 5 5 3 0 49 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 When 30 minutes has passed after the hot water heat pump operation started The water inlet temperature TWI reaches 50 C The hot water cylinder sensor reaches the HP OFF temperature 45 C FC The HP ON temperature 38 C FC is reached without the hot water HP status HOT WATER BOOST operation is in progress TTW Abnormality detection 85 Diff 2K Y zone Heater off X zone Heater on Hot Water Boost Heater on only with Hot Water Boost in operation TSC_H HP_OFF 45 Heater on without hot water HP HP_ON 38 Hot water HP start 2 2 Heating operation 1 Heater control at the time of heat pump operation Object to be controlled Ba
26. control 48 56 Outdoor Unit Control 1 PMV Electronic control valve control 2 Outlet temperature release control 3 Current release control 4 Current releases shift control 5 Outdoor fan control 6 Defrosting control 7 Winding heating control 8 Continued operation prevention under short circuit conditions 9 Overcurrent protection control 57 63 35 Item Operation flow and applicable data etc Operation description 8 1 1 Operation control 1 Purpose Basic The operations of the Operation Remote controller hydro unit and the Operation condition selection Heating Run Stop Hot water supply Run Stop Cooling Run Stop Serial signals transmit and receive Serial signals transmit and receive Hot water supply heater MG Mixing Valve Pressure switch exchange Lo pressure sensor Serial signals transmit and receive Outdoor Serial unit Serial signals transmit and receive unit control communication Remote control settings Heating Temperature setting Hot water supply Temperature setting Cooling Temperature setting Auto Temp Anti Bacteria Frost protection Hot waterboost AC 230 V for Hot water cylinder heater 400 V 3N for Back up heater Thermostat Cooling Heating Forcible stop input Water heat exchange Sub board Abnormal stop output Defrosting output Operation output Boiler ON OFF Booster
27. crossover is detected 1 Check the remote control crossover E01 between the remote control and the 2 Check the remote control base unit of the indoor unit 3 Check the hvd iv wiri detected on the remote control SQN Me MY Gre POWER SUPPY WINNA side 4 Check the water heat exchanger board Defect in the signal transmission Stop Displayed when Defect in the transmission of the remote to the hydro unit Automatic reset the abnormality control E02 Detected on the remote control side is detected 1 Checkthe transmitter circuit inside the remote control Replace the remote control Several remote control base units Stop Displayed when 1 2 Check several base units with the E09 Detected on the remote control side The handset the abnormality remote control continues is detected The base unit is only one and others are handsets 73 9 4 Diagnosis flow chart for each error code 9 4 1 Hydro unit failure detection A01 Error Pump flow determination Operation restarts No No pump sound Pump rotates UADPMITID Perform air vent Yes Flow switch is connected to board No Excess air noise comes from inside the pump Yes No No Built in pump is connected to board Yes M No Flow switch is normal Chattering noise comes from flow switch Yes Pump stops 2 3 minutes after its rotation started Flow shortage Ident
28. down L3 Frequency slow down Frequency hold Frequency slow up up to the point instructed As instructed 802H E 1102H E 1402H E Heating Cooling Heating Cooling TC TWO 2 TL TC TWO 2 TL a 61 C 63 C 62 C 63 C b 56 C 62 C 57 C 62 C 54 C 60 C 55 C 60 C d 52 C 58 C 53 C 58 C e 48 C 54 C 49 C 54 C 63 9 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 by the remote control Please refer to the following procedure of defect diagnosis for the identification No Procedure of defect diagnosis Remark Matters to be confirmed first 9 1 1 Check the power supply voltage Check the power supply for the heat pump 9 1 2 Check for any miswiring of the connection hot water heater the crossover between cables between the hydro unit and the the hydro unit and the outdoor unit and the 9 1 outdoor unit installation of temperature sensors 9 1 3 About the installation of the temperature sensor 9 2 Non defective operation program operation Non defective program operations for the protection of the heat pump unit Outline of the determination 9 3 1 Procedure of defect diagnosis With referenc
29. edeus n LExZL jejno Bunoeuuoo 100pino pue Joopu jenno uomod jo Duidid jo 10 pessoque COLA TAT f 2 ty 2 7 2 691 uonoeuuoo 6 9 uonoeuuoo NS mem SSS SEES 55222222 v jo sjiejoq SU i aloy Buol 1 guomog ejou se Z 19 4 3 Hot water cylinder HWS 3001CSHM3 E UK HWS 2101CSHM3 E UK 550 550 595 595 Specification for UK 90 2066 6 oroz 1497 6 HWS 1501CSHM3 E UK 550 Specification for UK only 20 5 Wiring Diagram 5 1 Hydro Unit
30. not connected correctly the heat pump system does not operate However a miswiring would not cause damage to the equipment 9 1 3 About the installation of the temperature sensor If each sensor is removed due to the replacement of the water heat exchange or inverter board or the replacement of the refrigeration cycle parts make sure to put the sensor back to the position where it was before Each sensor position has a marking Make sure to put it back to the exact position Make sure to install it with a sensor holder so that the temperature sensing part of the sensor and the straight part of the copper piping are attached with each other tightly Ifthe installation of the sensor is incomplete or the installed position is wrong it will not perform a normal control operation and may cause a defect such as a malfunction of the equipment or an occurrence of an abnormal sound etc 9 2 Non defective operation program operation No fault code display appears In order to control the heat pump unit there are the following operations as the built in program operations in the microcomputer If a claim occurs about the operation please confirm whether it falls under any of the contents in the following table If it does please understand that the symptom is not a defect of the equipment and it is an operation necessary for the control and maintenance of the heat pump unit Table 9 2 1 Non defective operation
31. of the pulse motor valve P19 3 Check the resistance value of the 4 96 temperature sensor TS exceeds 50 C during the heat pump operation heat exchange temperature sensor TE and the suction temperature sensor TS 71 Diagnostic functional operation Number of Check aati abnormalities Detailed code Operational cause Backup Automat Determination and action for item P present reset confirmation High pressure protection operation 1 Check that the service valve is fully When an abnormal stop occurs due to open the high pressure release control 2 Defect of the pulse motor valve When the heat exchange temperature 3 Check the outdoor fan system p29 Sensor TL detects 63 C during the including clogging 10 97 cooling operation 4 Over filling of refrigerant When the water outlet sensor TWO 5 Check the resistance value of the detects 60 C during the heating or hot heat exchange temperature sensor water supply operation TL and the water outlet temperature sensor TWO Outdoor fan system error 1 Check the lock status of the motor When a DC fan rotor position detection fan P22 NG element short circuit loss of 2 Check the connection of the fan 1 4 98 synchronization or abnormal motor motor cable connector current occurs 3 Check the power supply voltage AC230 V 23 V Short circuit of the compressor driver 1 P26 abnormality occurs when e
32. side g zone Operation with heating priority A heat pump operation is performed in the heating side anda heating operation in the hot water supply side Operation mode by zone TO Hot water supply heat pump priority operation Diff 5deg D Note Heating heat g zone pump priority operation Diff 5deg 20 Heater operation zone Zone Hot water supply side Heating side f Heat pump Stop g Heater Heat pump h Heater Heater mode changes as follows Zone Hot water supply side Heating side f Heater Heat pump When TTW 2 45 C FC changeable is met the operation ends f zone and returns to f zone Note that after a heat pump operation for Hot water supply is selected in f zone when the operation moves to a heater operation for hot water and then 5 minutes has passed Hot water supply operation in b zone the operation Related FC FC No Setting item Default Setting available range 07 Maximum HP operation time in hot water supply heating 30 min 0 120min mode 22 Priority mode switch temperature D 0 20 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 mins 41 Control Method Item Operation flow and applicable data etc 8 2 5 Simultaneous operati
33. to the temperature of 2 C below the set temperature Status Heater ON OFF Defrosting ends according to the usual heater control Heater 1 Backup heater 3 kW ON 2 4 Forcible heater energization To prevent freeze the unit energizes or stops energizing a backup heater 3 kW regardless of the unit status not operated or in operation Object to be controlled Backup heater 1 Energization start condition TWO 4 or TWI 4or THO 4 2 Energization stop condition TWO 2 5 TWI 2 5 and THO 2 5 Defrosting ends according to the usual heater control 2 5 No heater operation According to the DP SW11 setting the unit switches the energize not energize for the hot water cylinder backup heater and booster For details see 10 1 51 Item Operation flow and applicable data etc 8 3 Hydro Unit Control 3 Circulation pump control One circulation pump enhancing pump P2 can be connected to the unit in addition to the built in circulation pump DP_SW10 1 3 within the water heat exchanger enables the built in pump to be set either to usual energization or only HP and backup heater energization and also enables the enhancing pump 2 to be set either to interlocked or non interlocked with the built in pump Item Heater ON OFF Initial value Switch AC pump 01 None 02 None 03 Enhanced pump P2 OFF Interlock Interlock Non interlock with bu
34. without the cylinder turned upside down Cylinder with siphon Gauge manifold Outdoor unit Refrigerant cylinder Electronic balance NOTE Cylinder without siphon Gauge manifold Outdoor unit Siphon pipe Refrigerant cylinder Electronic balance Because R410A is HFC mixed refrigerant charging with gas changes the charged refrigerant composition causing the equipment characteristics to change 12 2 5 Brazing of pipes 2 5 1 Materials of brazing Silver brazing metal Silver brazing metal is an alloy mainly composed of silver and copper It uses iron copper or copper alloy and is relatively expensive though it excels in soldering Phosphor bronze brazing metal Phosphor bronze brazing metal is generally used to join copper or copper alloy Low temperature brazing metal Low temperature brazing metal is generally called solder and is an alloy of tin and lead Do not use it for refrigerant piping because its adhesive capacity is low NOTE Phosphor bronze brazing metal tends to react with sulfur producing a fragile compound water solution This may cause gas leakage Therefore use other type of brazing metal at a hot spring resort or similar place and coat the surface with coatings To braze the pipe again while performing service work use the same type of brazing metal 2 5 2 Flux Why flux is necessary Removing all the oxide film and any foreign matter on the me
35. 2 5 1 Prevention of oxidation during brazing Flow meter Stop valve Nitrogen gas cylinder From nitrogen cylinder Nitrogen gas Robber plug 14 3 Specifications Unit name Hydro unit HWS 802XWHM3 E 802XWHT6 E Outdoor unit HWS 802H E Heating capacity 1 kW 8 0 Cooling capacity 2 kW 6 0 Variable range of compressor frequency 10 70 Hz Power source Single phase 50Hz 230V Operation mode Heating Cooling Electric characteristic 1 2 Hydro unit Current A 0 98 0 46 Power kW 0 101 0 097 Power factor 91 5 91 7 Outdoor unit Current A 8 26 8 90 Power kW 1 859 2 033 Power factor 97 8 99 3 Total Starting current A 9 24 9 36 Operating noise 1 2 4 Hydro unit dB A 29 29 Outdoor unit dB A 49 49 Coefficient of performance 1 2 4 08 2 82 Hydro unit Outer dimension Height mm 925 Width mm 525 Depth mm 355 Net weight kg 50 Color Silky shade Munsell 1Y8 5 0 5 Remote controller Height mm 120 Outer dimension 3 Width mm 120 Depth mm 20 Circulating pump Motor output W 125 MAX Flow rate L min 22 9 17 2 Type Non self suction centrifugal pump Heat exchanger Plate type heat exchange Outdoor unit Outer dimension Height mm 890 Width mm 900 Depth mm 320 Net weight kg 63 Color Silky shade M
36. 4 45 2 69 Hydro unit Outer dimension Height mm 925 Width mm 525 Depth mm 355 Net weight kg 54 Color Silky shade Munsell 1Y8 5 0 5 Remote controller Height mm 120 Outer dimension 3 Width mm 120 Depth mm 20 Circulating pump Motor output W 190 MAX Flow rate L min 32 1 28 9 40 1 31 5 Type Non self suction centrifugal pump Heat exchanger Plate type heat exchange Outdoor unit Outer dimension Height mm 1340 Width mm 900 Depth mm 320 Net weight kg 90 Color Silky shade Munsell 1Y8 5 0 5 Compressor Motor output W 2500 Type Twin rotary type with DC inverter variable speed control Model DA422A3F 25M Fan motor Standard air capacity m min 103 0 Motor output W 100 x 2 Refrigerant piping Connection method Flare connection Hydro unit Liquid 29 52 Gas 015 9 Outdoor unit Liquid 29 52 Gas 215 9 Maximum length m 30 Maximum chargeless length m 30 Maximum height difference m 30 Minimum length m 3 Refrigerant Refrigerant name R410A Charge amount kg 2 7 Water piping Pipe diameter R1 1 4 Maximum length m None Need the flow rate 132 or more Maximum height difference m 7 Maximum working water pressure kPa 300 Operating temperature range Hydro unit C 5 32 Outdoor unit C 20 43 Operating humidity range Hydro unit 15 85 Outdoor unit 15 100 Wiring connection Power wi
37. 7 10 10589290 euordo ue Sojeoipul eui peusep eui ejiuw sejeoipur 2 Jequinu euiuue eui jequunu eu e sejeoipul 1 OVA 082 YOL OWA 08 Sz esny 9520 105598 00 Josuas aunyesadwia Josuas 04 104 26 0 Josuas al Sb Qi M Josues ainyesadwia Josuos 1109 1 Ue yey Ose Epor oL __ jun malas yueg Jewod 1 1 LOOND 0990 O DI B 09N9 POOND E 00805 10815 yogms MOINA 01919 LLSI OOW 1 1 b j qewa 1 1 3 Z0LESINH 55 1 f em ZOZNO LOZNO OOZNO 0080 OOPND 1 Jopeed 7 22 5 3 Hot Water Cylinder Unit Double pole thermal cut out Blue TBO6 TTW TTW sensor Hot water cylinder heater YY y To hydro unit Supply 230 V from hydro unit Cable size 1 5 mm minimum 23 6 Key Electric Component Rating 6 1 Hydro Unit HWS 802XWHM3 E 802XWHT6 E Model name
38. B WB lt 10 C WD WD WD TO abnormal WD WD WD For 1402H E Less than 20 Hz 20 Hz or more to less 45 Hz or more Temperature range than 45 Hz Maximum Maximum Maximum 10 lt TO W7 Ws wg 5 C TO lt 10 C weg WA WB 3 C lt lt 5 C WB WB WC 10 C lt lt 3 C WC WC WC TO lt 10 C WD WD WD TO abnormal WD WD WD 60 Item Operation flow and applicable data etc 8 4 Outdoor unit control 6 Defrosting 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 2 During defrosting when TE sensor maintains 12 C or higher for 3 seconds or 7 C lt lt 12 C for a minute the defrosting ends Also when defrosting continues for 10 minutes even if the TE sensor temperature is below 7 C the defrosting ends 3 After the defrosting stop the compressor for approx 40 seconds before starting a heating operation 4 Switching the jumper J805 and J806 of the outdoor control board can change the time of d above mentioned Factory setting 150 minutes Heating operation starts TE 0 10 15 39 45 55 d min C
39. Booster heater terminal AC230 V 1 0A 22 Fuse AC 250 V 30 A O Applied Optional accessory 24 HWS 1402XWHM93 E 1402XWHT6 E 1402XWHT9 E Model name No Component name Type name Rating M3 E T6 E T9 E 1 Circulating pump UPS25 80 130 AC230 V 0 83 A MAX 2 Backup heater 6 kW AC 400 V 3N 6 kW AC230 V 3kW compatible 3 Backup heater 9 kW AC 400 V 3N 9 kW Water heat exchange 10 kQ 25 C 4 temperature sensor TC sensor Water inlet temperature sensor 10 kQ 25 C 5 TWI sensor Water outlet temperature sensor 10 kQ 25 C 6 TWO sensor Heater outlet water temperature 10 kQ 25 C 7 sensor THO sensor 8 Floor inlet temperature sensor _ 10 25 C TFI sensor 9 Pressure switch Operating pressure 4 15 MPa 0 0 3 MPa 10 Low pressure sensor Operating pressure 0 20 MPa 11 Thermal protector auto Operating temperature 75 3 C DC42 V 0 2A 42 Thermal protector single 6 Operating temperature 95 5 AC250 V 16 operation 13 Flow switch Operating flowing quantity 18 L min 14 Output board OP OP OP OP TCB PCIN3E 230 V0 5ADC24V1A 15 Input board OP OP OP Contact input 16 Remote control HWS AMS11E 17 Water 3 way valve terminal 6 AC230V0 1A
40. DB The outlet temperature error 1 Check the refrigeration cycle gas When the discharge temperature sensor leak TD exceeds 111 C 2 Defect of the pulse motor valve 4 94 3 Check the resistance value of the discharge temperature sensor TD P04 The high pressure switch error X 10 94 The power supply voltage error doc heri Check the power supply voltage x 5 When the power supply voltage is 230 V 23 V 4 94 extremely high or low Overheating of heat sink error 1 Check the thread fastening and When the heat sink exceeds 105 C heat sink grease between the outdoor control board and the heat P07 x sink 4 95 2 Check the heat sink fan duct 3 Check the resistance value of the heat sink temperature sensor TH Detection of gas leak 1 Check the refrigeration cycle gas When the discharge temperature sensor leak TD exceeds 106 C for consecutive 10 2 Check that the service valve is fully min open p45 When the suction temperature sensor 3 Defect of the pulse motor valve 4 95 TS exceeds 60 C for cooling or 40 C 4 Check for a kinked piping for heating for 10 consecutive min 5 Check the resistance value of the discharge temperature sensor TD and the suction temperature sensor TS The 4 way valve inversion error 1 Check the operation of the 4 way When the heat exchange temperature valve unit or the coil characteristics sensor TE exceeds 30 C or the suction 2 Defect
41. E WHI te y tes Lal gt T wv 4 Fuse sb V pei o Type 1 605 CN606 CN305 CNi00 TSA 2 wire spring return 8 wire SPST type BLU vaj BLU 250V 0900060 069 060 A T e t 1 HWS 802XWHT6 E Installed zl 0009000 099 090 HWS 1402XWHT6 E Installed zz a s 12 i s TA HWS 1402XWHT9 E _ Installed MESES os 25 gt a 568 amp 5 3 HWS B02XWHM3 E Not installed d HWS 1402XWHM3 E Not installed amp amp C RY Symbol Paris name Symbol Paris name lt lt lo 02 037 f WPM Water pump motor TC Water heat exchanger temperature sensor xv 6 O 07 0 3 valve local TWI Water heat exchanger inlet temperature sensor Type2 M Type2 Deo TF BWV valve local TWO Water heat exchanger outlet temperature sensor 3 wire SPST type 8 wire SPDT type PNK 3 Wai Wai MIXV Mixing valve THO Backup heater outlet temperature sensor T ORN 1 BH Booster heater Hot water cylinder temperature sensor a wire SPOT kpe AYO6 elayOt_ Helay0S TFI Floor heating inlet temperature sensor LPS Low pressure sensor TB Terminal block Backup heatert 2 3 Heater AC230V 3KW 3 sus nears Texas 9 sacs rears single operation single operation I single oper
42. Heater Condensed temperature sensor TC Water inlet temperature sensor TWI lt Water outlet temperature sensor TWO I Water heater outlet temperature sensor THO Hot water cylinder TTW Floor inlet sensor TFI lt Overheat prevention thermostat I Flow switch Hot water cylinder heater Backup heater 1 power relay Backup heater 2 power relay Water heat control board AC pump 1 Built in pump P AC 230 V for heat pump Outdoor unit contro Inverter frequency control Waveform synthesis function Calculation function Temperature calculation AD conversion function Rapid heating function Compressor restart Delay function G Tr overcurrent prevention function Defrosting operation function Compressor Inverter Outdoor fan motor lt Te sensor 4 To sensor outdoor unit are controlled according to user defined operation condition settings 2 Details The operation controls include those shown in the left 3 Operations 1 An operation condition is selected with the remote controller 2 Setting the remote controller button to transmits a signal to the hydro unit 3 The hydro unit controller controls the operations shown in the left while also controlling the water 2 way valve water 3 way valve circulation pump mixing valve hot water cylinder heater and backup heater 4 The hyd
43. No Operation of the heat pump system Explanation The compressor sometimes does not operate even within the The compressor does not operate during the operation of the 1 range of compressor ON compressor reboot timer 3 min Even after the power activation the compressor reboot timer continues to be active During the hot water supply or heating operation without It may be caused by the high temperature release control 2 reaching the set temperature the compressor operation release protection control by the temperature of the water frequency stays at a frequency of less than the maximum Hz or heat exchanger or the current release control lowers down The Stop operation on the remote control will not stop the In order to deal with the temperature increase in the heat 3 circulating pump The same for hot water supply heating and exchanger after stopping the operation continues for 1 min cooling after the compressor is stopped ON on the remote control will not operate the compressor It When the outdoor temperature TO sensor detection 4 will not operate even after the reboot delay timer elapsed temperature is 20 C or lower the heat pump will not operate in order to protect the compressor and the heater will operate instead When the power is turned on it starts operation without The auto restart operation may be working operating the remote control The antifreeze operation may be working 5 f the TWI TWO or THO s
44. T WATER BOOST button set to ON Heating side Current heat pump operation Hot water Switches to Hot water supply side supply operation 75 C Hot water operation 60 minutes passed Usual operation Related FC FC No Setting item Default Setting available range 09 HOT WATER BOOST set temperature 75 C 40 80 08 HOT WATER BOOST operation time 60 mins 30 180 mins Every 10 mins 43 Item Operation flow and applicable data etc 8 2 Operation Mode and Control Method 8 Anti bacteria ANTI BACTERIA operation An anti bacteria operation regularly performs a Hot water supply operation with the set temperature TSC_H 75 C can be set with FC 0A 1 How to operate Pressing the HOT WATER button and then the remote controller ANTI BACTERIA button changes the setting to TSC H 75 C at the set cycle and time both can be set with the remote controller FC to start ANTI BACTERIA operation The first auti bacteria operation starts when press the ANTI BACTERIA button and starting time come When the set temperature 75 C is reached after the ANTI BACTERIA operation started the set temperature remains another 30 minutes can be set with OB The priority zone determined by the outside temperature selects an operation Hot water heat pump or hot water supply heater The hot water heat pump operation when selected ignores the hot water supply start
45. TFI TWI 5K is detected Low pressure sensor error Check for any disconnection body When PS 0 07 MPa is detected for 2 or connection wiring of the low F23 sec or more pressure sensor 1 89 Check the resistance value of the low pressure sensor EEROM error th eat h 229 Inconsistency is detected once without x 1 90 cr control board verify ACK after writing to EEPROM F30 Extended IC error X x Replace the water heat exchange 1 90 When the extended IC is abnormal control board 107 Communication error x x Replace the water heat exchange 1 90 Individual hydro units have a group line control board Communication error Check the setting of the FCO1 ili i capability specifications 109 The capability of the hydro unit has not x x 5 1 90 been set HWS 802xx E 0012 HWS 1402xx E 0017 Setting error L16 When has not been set while x x Check the body DP SW12 2 3 1 90 ZONE2 has been set 69 Defect mode detected by the outdoor unit Possible x Not possible Diagnostic functional operation Number of Check NE abnormalities Detailed code Operational cause Backup Automat Determination and action for item P present ic reset confirmation TD sensor error 1 Check the resistance value and 85 F04 Open or short circuit in the discharge connection of the discharge sensor 1 99 temperature sens
46. TOSHIBA ESTIA Leading Innovation gt gt gt HFC AIR TO WATER HEAT PUMP R410A 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 Contents 1 SAFETY PRECAUTIONS 5544542200006 Seep AUR RR Sr 3 2 NEW REFRIGERANT R4104A ses cree Mae ea ae ae e 8 6 2 1 Safety During Installation and 5 6 2 2 Installing refrigerant pipe 0 6 tenet mI a 7 2 2 1 Steel pipe and 0 re 7 2 2 2 Processing of piping materials 8 AMES REEE ALE OE NEE ODA ee edi mu ng EV ERN C PER ea 10 2 3 1 Necessary tols seiate oe En e 0 10 2 4 Recharging of refrigerant sdu terpo lh hn 11 2 5 Brazing of PIPES Bed die a Na Ate we Qe Tree dq 13 2 5 1 Materials of brazing a 1 13 2 5 2 F liX e dee Desa eck inna birdie a Bae eua qu A e 13 2 5 3 Brazlng bate rb eR eru E XUED ERE UU IU ERA ERES 13 Specifications t iai eril cr Ere uei e etie rue edat 15 4 Outside Drawing RENNES Mibi IS Ku rari 17
47. a repair is completed check for any abnormality Failure to do so may cause a fire an electric shock an injury Turn off the power breaker to perform check After a repair is completed and the front panel and cabinet are placed make a test run to check for any abnormality such as smoke or abnormal sound Failure to do so may cause a fire or an electric shock Place the front panel and cabinet before making a test run lt Check after re installation gt Check that the following are properly performed after re installation 1 The ground wire is properly connected 2 The installation is stable without any tilt or wobbles Failure to check them may cause a fire an electric shock or an injury CAUTION lt Wear gloves gt Wear gloves when performing repair Failure to do so may cause an injury when accidentally contacting the parts Thick gloves such as cotton work gloves Cooling check Perform service work when the unit becomes cool enough after the operation High temperature of compressor piping or other equipment after a cooling or heating operation may cause burn Tighten with torque wrench Tighten a flare nut with a torque wrench in the specified method A flare nut tightened too much might crack after a long period causing refrigerant leak 2 NEW REFRIGERANT R410A This Air to Water Heat Pump adopts a new refrigerant HFC R410A to prevent destru
48. at when the heating set temperature TSC is reached the unit stops energizing the heater THO Abnormality detection Diff 2K Heater off 70 TSC F 0 Heater output down every 5 10 15 or 20 minutes TSC F 2 Diff 2K KEEP TSC F 4 Diff 2K Heater output up every 10 20 30 or 40 minutes Status Heater ON OFF Heater 1 Backup heater 3 kW ON Heater 2 Backup heater 9 kW ON Heater 3 Heater 2 Booster heater The single phase model of 3 kW has the backup heater 1 only The three phase model of 6 kW has heater 1 2 of 6 kW Contact point output only is available for booster heater Related FC FC No Setting item Default Setting available range 20 Hot water supply heat pump start temperature 38 C 20 45 C 21 Hot water supply heat pump stop temperature 45 C 40 50 C 33 Heater control of down time 1 10 mins 0 5 mins 2 15 mins 3 20 mins 34 Heater control of up time 0 10 mins 1 20 mins 2 30 mins 3 40 mins 2 3 Heater control at the time of defrosting Object to be controlled Backup heater THO When a defrosting operation starts during the heating heat TSC F pump operation the unit energizes a backup heater 3 KW P according to the heater outlet temperature sensor THO and TSC_F B B 2 the set temperature TSC_F as follows TSC F a a 4 Heater off Heater 1 Heater 1 1 When the heater outlet temperature sensor THO drops
49. ation es C NEES 95 5 Tenge 7 heater 2 ss 95 5 Backup heater 3 Thermal profector Tangle opeaton 95 2s 1 515 Ls waea maaa KATEEK RYOS LI oT ad 25 oid ole mvoe vee he l9 5 fe I8 favos Je ANAA EN 573 21121819 21115121873 BEUBDHGE 8 9 3 gz d 2 casov mx F3 F4 F5 F3 F4 6 F3 F4 Fuse 3 Fuse Fuse 250 14114 250 250 T30A IRIS Taoa 19 TRA E x E 3 zi 216 58 Em aS gm 1 TB 01 6152 XL INS Option ar J mo ey 1006 Outdoor OS 1 unit AEK Power supply es p 230V 50Hz Power Supply Power supply Power supply eaxers 400V 3N 50Hz 400V 3N 50Hz 230V 50Hz id Power suppl Hot water cylinder 230050827 L L L 1 The one dot chain line indicates wiring at the local site and the dashed line indicates accessories sold separately and service wires respectively 2 O and indicates the terminal board and the numberals indicate the terminal numbers 3 2 indicates P C board Be sure to fix the electric parts cover surely with screws Otherwise water enters into the box resulting in malfunction 21 5 2 Outdoor Uni wesbelp oJp u y ees jun 104 p preoq pejuud sejeorpul E777
50. ation instructed by the hydro unit is used to determine whether the current value exceeds the specified value If exceeds the number of compressor rotation is reduced to the most approximate number instructed by the hydro unit within the specified value range Outdoor unit current inverter Main circuit control current Outside air temperature TO Current release point setting Operation current SSetting Compressor operation Hz down degradation Capacity control continue Heating Outside temperature Current release value A TO degree C 802H E 1102 1402H E 35 lt TO 12 0 12 0 15 lt lt 35 20 0 15 0 4 20 0 15 0 4 lt 15 20 0 20 0 Cooling Outside temperature Current release value A TO degree C 802H E 1102 1402H E 44 lt TO 9 5 15 0 39 lt lt 44 13 0 177 10 lt lt 39 16 0 20 0 No cooling operation available for lt 10 C A CT 20 0 12 0 4 Current releases shift control During a cooling operation this control prevents the electronic parts such as a compressor drive element and compressor from failing The current release control value 1 is selected from the following table according to the TO sensor value Current release control value 1 Temperature range 802H E 1102H E 1402H E 50 C lt TO 10 5 14 1 14 1 45 lt
51. ay valve 4 The outdoor unit controls the compressor outdoor fan motor pulse motor valve and 4 way valve based on the operation signals transmitted by the hydro unit 38 Item Operation flow and applicable data etc 8 2 The following shows the operation modes and controlled objects Operation Mode and Operation Heating and Hot water Cooling and Hot water mode Control Method Heat pump select Heat pump select Heat pump select Heat pump select Hot for heatin for hot water for coolin for hot water Cooling Heating water g supply 9 supply only only p Hot Hot Hot Hot Heating water Heating water Cooling water Cooling water Controlled side supply side supply side supply side supply object side side side side Heat pump heater Hot water cylinder x x heater O Possible x Not possible 1 Hot water supply operation 1 Operation start condition When the HOT WATER remote controller button is pressed and the following operation start condition is met the operation starts TTW lt 38 C is detected 2 Operation mode determination An operation mode is determined according to the temperature of TTW sensor Heat pump operation selection 1 2 When TTW lt 38 C a zone the right figure is met the heat pump operation is
52. below the boil up temperature will be higher that setting temperature in hot water supply mode 39 Item Operation flow and applicable data etc 8 2 2 Heating operation Operation lt Operation only for ZONE1 gt Mode and This operation is enabled when DP SW12 2 ZONE1 is set to ON default Control Method The remote controller displays __ZONE1 settings and only the set temperature of __ZONE1 can be changed Operation for and ZONE2 2 temperatures control This operation is enabled when DP SW12 2 ZONE1 is set to ON default and DP SW12 3 ZONE2 to ON The remote controller displays ZONE1 J 72 2_ _ Settings and the set temperatures of zoNE1 ZONE2 can be changed To set temperatures for zoNE1 zoNE2 __ use SELECT to switch zoNE1 and ZONE2 _ For 2 temperatures control the flow adjustment of MIXING VALVE controls the water temperature of ZONE2 _ For details see the description on MIXING VALVE control in 8 3 5 1 Operation start condition Pressing the ZONE1 2 button of remote controller starts a TWI heating operation 1 2 Thermostat off e zone 2 Operation mode selection operation An operation mode is determined according to the temperature TSC_F of TWI sensor Heat pump operation selection 1 2 When TWI lt TSC_F d zone in the right figure is met the heat Cf 0 pump operation i
53. ckup heater The backup heater control starts when 13 minutes has passed after the heating heat pump operation started and select the ZONE A D 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 When the heating set temperature TSC_F is reached the hydro stops energizing the backup heater THO Abnormality detection Diff 2K Heater off 70 TSC F 2 Heater output down every 5 10 15 or 20 minutes TSC F 4 Diff 2K KEEP TSC F 6 Diff 2K Heater output up every 10 20 30 or 40 minutes Status Heater ON OFF Heater 1 Backup heater 3 kW ON Heater 2 Backup heater 9 kW ON The single phase model of 3 kW has the backup heater 1 only The three phase model of 6 kW has heater 1 2 of 6 kW 50 Item Operation flow and applicable data etc 8 3 Hydro Unit Control 2 Control at the time of heating heater operation Controlled Object Backup heater Booster heater 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 Note th
54. condition TTW 38 C and forcibly performs a hot water operation During ANTI BACTERIA operation Forcible hot water operation at 75 C the hot water set temperature display is not changed If it is changed from the remote controller the normal hot water set temperature will be changed Usual hot water supply operation Set temperature 40 C to 75 C A Caution During a 75 C hot water supply operation with ANTI BACTERIA the remote controller does not display 75 C Be careful not to burn yourself Output water may be hotter than that displayed on the remote controller Related FC FC No Setting item Default Setting available range 0A Anti bacteria set temperature 75 C 70 80 C Anti bacteria holding time 30 mins 0 60 mins Remote control Anti bacteria start time 22 00 0 00 22 00 oc Remote control Anti bacteria operation cycle 7 days Every day to 10 days OD 44 Control Method 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 Note Set the remote controller time before starting a NIGHT SET BACK operation The set time can be changed with remote controller FC
55. 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 After that the fan is controlled according to the TE sensor temperature 3 If TE gt 24 C continues for 5 minutes the operation stops No error code is displayed for this the status is the same as the usual thermostat off The operation restarts after 150 seconds This intermittent running is not abnormal 4 If the situation in 3 frequently occurs the possible cause is that the filter in the air inlet part of the hydro unit is dusty Clean the filter and restart the operation 2 tap 20 secs to W1 Stop time count 2 tap 20 secs to W1 1 tap 20 secs to W1 Number of revolutions hold 1 tap 20 secs Up to the maximum tap for each zone For 802H E Less than 20 Hz 20 Hz or more to less 45 Hz or more Temperature range than 45 Hz Maximum Maximum Maximum 10 lt TO W7 ws ws 5 C lt lt 10 C ws WB WD 3 C lt lt 5 C WD WD WE 10 C lt lt 3 C WE WE WE TO lt 10 C WF WF WF TO abnormal WF WF WF For 1102H E Less than 20 Hz 20 Hz or more to less 45 Hz or more Temperature range than 45 Hz Maximum Maximum Maximum 10 C lt TO W7 ws W9 5 C lt TO lt 10 C ws WA WA 3 C lt lt 5 C WA WA WB 10 C lt TO lt 3 C WB W
56. could cause an electric shock if electric leakage occurs e Ifthe earth ground is not properly connected ask an electrical worker for rework of the ground connection Ground wire of class D grounding WARNING lt No modification gt Do not modify the unit Do not disassemble or modify the parts also A fire an electric shock or an injury may occur lt Use specified parts gt 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 Keep children away from unit Keep any person including children other than service engineers away from a failure diagnosis or repairing place A tool or disassembled parts may cause an injury Advise the customer to keep the third persons including children away from the unit Insulation treatment After connecting a cut lead with a crimp contact discharge by facing the closed side upward Connect lead wires with crimping terminals and turn the closed end upwards to avoid exposure to water Watch out for fire Observe the following instructions when repairing the refrigerant cycle 1 Watch out for surrounding fire Always put out the fire of stove burner or other devices before starting the repair Should the fire fail to be put out the oil mixed with refrigerant gas could catch fire 2 Do no use a welder in a closed room
57. ction 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 A wrong installation or service operation may cause a serious accident Read carefully the following instructions to use the tools or members for R410A for safety work 2 1 Safety During Installation and Service Use only the refrigerant R410A for Air to Water Heat Pump using R410A A mixture of R410A with different ones excessively raises the pressure in a refrigerant cycle leading to an injury due to burst Check the refrigerant name to use the tools and members appropriate for the refrigerant A product using the refrigerant R410A has the refrigerant name prominently displayed on its outdoor unit In addition the diameter of the service port is changed from that of the conventional R22 to prevent incorrect filling Ventilate if refrigerant gas leaks during service work Should refrigerant gas catch fire poisonous gases may be produced A closed room full of leaking refrigerant results in the absence of oxygen it is dangerous Make sure to ventilate When the refrigerant cycle is refilled with refrigerant do not mix air or refrigerants other t
58. d refrigerant gas catch fire poisonous gases may be produced A closed room full of leaking refrigerant results in the absence of oxygen it is dangerous Make sure to ventilate lt Caution electric shock gt When checking a circuit while energized if necessary use rubber gloves not to contact the live part Contact with the live part may cause an electric shock The unit contains high voltage circuits Contact with a part in the control board with your bare hand may cause an electric shock Take enough care to check circuits lt Turn off the power breaker gt Because the electrical components are energized with high voltage always turn off the power breaker before starting to work Failure to do so may cause an electric shock lt Always do gt Should refrigerant gas leak find where the gas leaks and properly repair it To stop the repair work because the leakage location cannot be identified perform refrigerant recovery and close the service valve Failure to do so may cause the refrigerant gas to leak in a room Although refrigerant gas alone is harmless if it catches fire of a fan heater a space heater or a stove poisonous gases may be produced When installing the unit or re installing it after relocation follow the installation guide for proper operation A defective installation may cause a refrigerant cycle defective a water leak an electric shock or a fire lt Check after repair gt After
59. deg C TWI T7 T8 T9 T10 T11 TWI lt 30 57 0 59 0 60 0 61 0 62 0 30 TWI 35 57 0 59 0 60 0 61 0 62 0 35 lt TWI lt 40 56 5 58 5 59 5 60 5 62 0 40 lt TWI 45 56 5 58 5 59 5 60 5 62 0 45 TWI lt 50 56 0 58 0 59 0 60 0 62 0 50 lt TWI 56 0 58 0 59 0 60 0 62 0 1 3 Low temperature release 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 See the table below If the compressor frequency instruction from the hydro unit is less then 10 Hz the compressor stops TC lt 3 C causes the compressor to stop abnormally When the compressor restarts when 140 seconds has passed after the stop and TC lt 3 C is not detected for 20 minutes the abnormal stop counter is cleared 10 times of compressor abnormal stop stops the operation of heat pump and confirms the abnormality Display A11 If the heat pump operation is switched to other operation the abnormality detection counter is reset to 0 TC TWO Zone Control operation S normal R1 Increase compressor frequency by 1 2 Hz every 7 pes os 60 secs R2 slow up R2 Increase compressor frequency by 0 6 Hz every T8 60 secs Decrease compressor frequency to 70 every P slow down 10 secs T10 P Decrease
60. e resistance value and F10 Open or short circuit in the water inlet connection of the water inlet 1 86 temperature sensor temperature sensor TWI TWO sensor error 1 Check the resistance value and F11 Open or short circuit in the water outlet x O connection of the water outlet 1 87 temperature sensor temperature sensor TWO TTW sensor error 1 Check the resistance value and F14 Open or short circuit in the hot water x connection of the hot water cylinder 1 87 cylinder sensor sensor TTW 68 Diagnostic functional operation Number of Check naf abnormalities Detailed code Operational caus Backup Automat Determination and action for item perauonascause present ic reset confirmation TFI sensor error Check the resistance value and F17 Open or short circuit in the floor x disconnection of the floor inlet 1 87 temperature sensor temperature sensor TFI THO sensor error Check the resistance value and F18 Open or short circuit in the heater outlet disconnection of the heater outlet 1 88 temperature sensor temperature sensor THO Detection of THO disconnection error Check for any disconnection of the F19 When TWO THO gt 15K is detected and x X heater outlet temperature sensor 1 88 30 sec elapsed THO TFI sensor error di ti fth F20 When TWO TFI 30K is detected and x x 1 89 floor inlet temperature sensor TFI
61. e to the check code diagram 9 3 2 How to determine from the check code roughly identify the defect from the defect display on the remote controller diagnosis for the heat pump hot water ie 9 3 3 How to cancel a check code on the heater and determine the defective part remote controller from individual symptoms 9 3 4 How to diagnose by error code Diagnosis flow chart foreach 9 4 1 Hydro unit failure detection 9 4 error code 9 4 2 Outdoor unit failure detection 9 4 3 Temperature sensor temperature resistance characteristic table Operation check by PC board 9 5 1 Operation check mode The operation check mode allows to determine good or not by checking the 9 5 operation of the 4 way valve 2 way valve and pulse motor valve 55 Brief method for checking the 9 6 1 Hydro unit How to determine the presence of any 1 key components 9 6 2 Outdoor unit defect particularly in functional parts 64 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 Make sure the interconnecting connections between the hydro unit and the outdoor unit terminal blocks are connected to the correct terminal numbers If
62. ectrolytic capacitors Fan motor output Compressor output terminals Power circuit protection CN300 White CN202 fuse F100 250 V 3 15 A plastic case Case thermostat connector CN609 Blue 4 way valve connector CN701 White Compressor ON output connector CN704 Blue Heater output connector CN703 Grey External input connector CN610 Yellow Special operation switches Sws01 SW804 Display change over switches Temperature sensor connectors TL CN604 White TD CN603 White TO CN602 Yellow TE CN601 White TS CN600 White 5 Alive error display LED D800 804 Yellow D805 Green 4 way valve protection Power circuit protection PMV connector fuse fuse CN710 White F700 250 V 3 15 A F01 250V 25A mE plastic case Initialization switch Connecting cable connector Power supply connection lead SW802 CN04 White wires Hydro outdoor communication signal LEDs eno TORIS Earth lead wire D503 Green Outdoor Hydro Connecting ies ipsae D502 Amber Hydro gt Outdoor 03 250 V 10 A Black 30 HWS 1102H E 1402H E Fan motor output Lower motor output Upper Compressor output terminals CN300 White CN400 White CN202 Electrolytic capacitors CN201 CN200 es 4 2 Wo ERE Sa Case thermostat connector Nee E 1 j NM e CN609 Blue NOD A j H a4 m 4 D M E Power circuit protection fuse
63. ensor detects a temperature below 4 C the operation changes from circulating pump gt gt circulating pump heater 65 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 Defect in Hydro unit Confirm the check code on the remote control display Check code A01 A12 Abnormality in the communication or setting Check code L07 L16 Check code FXX Abnormality in the outdoor unit or hot water tank unit 9 3 2 How to determine from the check code on the remote control If the defect is limited by the check code displayed on the remote control please repair the defect based on the table on the next page The check codes are separated into two groups software and hardware errors Since a hardware error cannot be cancelled without a part replacement etc please perform a repair If its abnormality is determined the abnormality is noticed by indicating the check code on the remote control check code display part while letting off a buzzer a gt ZONE1 4 gt ZONE2 4 HH AS LIL LIL cose UNIT No H DA STEP DATAPI Check code display par
64. gas side 0 1 MPa 76cmHg close fully the handle Lo and turn off the vacuum pump Connect the charge hose to the vacuum pump adapter Let the equipment stay as it is for one to two minutes and check that the compound gauge pointer does not return Open fully both packed valves on the liquid and gas sides Place the refrigerant cylinder to the electronic balance connect the connecting hose to the cylinder and the connecting port of the electronic balance and then charge liquid refrigerant For refrigerant charging see the figure below NOTE Never charge refrigerant exceeding the specified amount If the specified amount of refrigerant cannot be charged charge it a little at a time while running refrigerant recovery pump down Do not make additional charging An additional charge when refrigerant leaks changes the refrigerant composition in the refrigerant cycle causing the characteristics change of the Air to Water Heat Pump or excessive high pressure in the refrigerant cycle with more than the specified amount of refrigerant charged This may cause burst or an injury Fig 2 4 1 Configuration of refrigerant charging Outdoor unit Open close valve for charging _ Service port Electronic balance for refrigerant charging 11 NOTE Make sure that the setting is appropriate so that liquid can be charged A cylinder with siphon enables liquid to be charged
65. ge Yes No No 9 Leakage detector Gas leakage check Yes No Yes 10 Charging cylinder Refrigerant charge Note 2 No No Note 1 Flaring for R410A by using the conventional flare tool requires projection margin adjustment This adjustment requires copper pipe gauge or other instrument Note 2 A charging cylinder for R410A is currently under development General tools Conventional tools are available In addition to the above dedicated tools the following equipment also available for R22 is necessary as the general tools 1 Vacuum pump 4 Reamer 9 Hole core drill 065 Use this by attaching vacuum pump 5 Pipe bender 10 Hexagon wrench adapter 6 Level vial Opposite side 4mm 2 Torque wrench For 26 35 7 Screwdriver 11 Tape measure 3 Pipe cutter 8 Spanner or Monkey wrench 12 Metal saw Also prepare the following equipment for other work methods or run check 1 Clamp meter 3 Insulation resistance meter 2 Thermometer 4 Electroscope 10 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 refrigerant remains in the refrigerant cycle Open fully the handle of gauge manifold Lo turn on the vacuum pump and then perform vacuum evacuating Connect the charge hose to packed valve service When the compound gauge s pointer indicates port on the outdoor unit s
66. han the specified refrigerant R410A A mixture of R410A with air or an inappropriate substance causes excessive high pressure inside the refrigerant cycle leading to an injury due to burst Check that no refrigerant gas leaks after the installation is completed Should a refrigerant gas leak in a room and catch fire poisonous gases may be produced When installing the unit that contains large amount of refrigerant such as Air to Water Heat Pump take measures to prevent the refrigerant from exceeding the threshold concentration in case it leaks Should leaking refrigerant exceed the threshold concentration could cause an accident due to oxygen deficient When installing the unit or re installing it after relocation follow the installation guide for proper operation A defective installation may cause a refrigerant cycle defective a water leak an electric shock or a fire Do not modify the product Do not disassemble or modify the parts also A fire an electric shock or an injury may occur 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 Copper pipe Use copper pipe of the copper and copper alloy seamless pipe type with attach oil quantity of 40 mg 10 mor less Do not use pi
67. ify causes and resolve TC sensor characteristic is correct Dirt clogging inside strainer 12 M or longer water pipe to a branch or 5 or less branches No Flow switch is normal Yes Water heat exchanger control board is defective replace it Connect flow switch connector to board Connect pump connector to board Replace flow switch Replace pump Replace TC sensor Remove waste Fit buffer tank and the second pump Attach or replace flow switch A02 Error Temperature rise and error short circuit TWITWO THO 70 No TWI TWO and THO sensor characteristics are Yes No Flow switch is normal Yes Water outlet temperature is 70 C or higher No ot water from boiler or other circuits does not come in No Yes Backup heater is energized Measure heater current No Replace water heat exchange control board 75 Replace TWI TWO and THO sensors Replace flow switch Correct water circuit To prevent hot water of other circuits from entering Failure of backup heater Too large heater input thermostat short circuit Replace heater unit A03 Error Temperature rise and error short circuit TTW 285 C is detected No Replace TTW sensor TTW sensor characteristic is correct Yes ot water cylinder heater is energized Mg sw RY05 for heater operates Replace Mg s
68. ilt in pump 04 None SW10 3 Existence amp position setting 1 The pump 1 in HP operates only in hot water supply side 2 Setting the enhancing pump P2 to non interlock sets the pump P1 to usual energization 3 1 Circulation pump Built in pump P1 Pump type AC motor rated voltage 230V manually changeable 3 level pump speed The pump operation starts when the following condition is met The HOT WATER or ZONE 1 2 button is pressed The pump operation ends when the following condition is met Pressing the HOT WATER or ZONE 1 2 button stops the about 1 minute later The pump operation stops or re starts as follows Stops for 30 seconds when the operation mode changes Stops the pump when a boiler instruction is given and 70 C lt TWI or TWO or THO is met Re starts the pump when a boiler instruction is given and 65 C gt TWI and TWO and THO is met Operation when DP SW10 1 ON HP operation only is selected The pump stops only when the hot water cylinder heater is in operation The pump does not stop with the heating thermostat off 3 2 Circulation pump Enhanced pump P2 Pump type AC motor rated voltage 230V directly connectable to the unit with the rated output of up to 200W DP SW10 3 enables the pump P2 to be set either to interlock or non interlock with the built in pump P1 Setting to non interlock sets the pump1 to usual energization 4 Flow switch operation
69. ion from the hydro unit through the option board Related FC FC No Setting item Default Setting available range 23 Heat pump only Simultaneous operation switching TO 10 20 20 C temperature E 3E Hydro unit setting Boiler set temperature priority switching 0 Priority on 1 Priority on boiler setting hydro unit setting 42 Item Operation flow and applicable data etc 8 2 Operation Mode and Control Method 7 Hot water boost operation A hot water boost operation boils water quickly to the set temperature TSC_H 75 C _09 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 lt 38 C In addition the hot water cylinder is immediately energized to start a Hot water supply operation under TSC_H 75 C A hot water boost operation returns to the usual operation after 60 minutes The remote controller display during a hot water boost operation is the same as the set temperature display of a usual Hot water supply operation The usual set temperature change is used for changing the set temperature during a hot water boost operation Change the BOOST set temperature with _09 if necessary HOT WATER button set to ON HO
70. ion is 3 Defect of the backup heater poor 1 activated while it has been stopped automatic res t thermostat Operation of the release protection Heating tn ter fl Almost no water flow When the TWO release counts to 10 Cooling 2 Detedt ofthe di itch 11 x x Defect of the flow switch 10 82 3 Check the water outlet temperature Hot water sensor TWO Heating hot water heater 1 Activated by a large load of heating The antifreeze control is detected under or hot water supply the condition of TWI 20 C while 2 Check the heater power circuit A12 TWI gt 15 C TTW gt 20 C is not detected O backup or hot water cylinder 1 83 after the heater backup heater Power supply voltage breaker power supply connection Regular communication error between hydro unit and remote E03 controller 1 Check remote control connection 1 When there is no regular communication 2 Defect in the remote control from the remote control for 3 min or when no remote control is equipped Regular communication error 1 Check the serial circuit between hydro unit and outdoor unit Miswiring of the crossover between E04 rd 1 84 The serial signal cannot be received the water heat exchanger and the from outdoor outdoor unit TC sensor error 1 Check the resistance value and 203 Open or short circuit in the heat connection of the heat exchange 1 85 exchange temperature sensor temperature sensor TC TWI sensor error 1 Check th
71. ition is not met when 3 minutes has passed after an operation starts the unit performs the operation in 3 2 to prevent freeze 3 2 How to operate circulation pump backup heater When neither HOT WATER nor ZONE1 2 is in operation if the end condition is not met when minutes has passed after an operation starts End condition TWO 2 5 C and TWI 2 5 C and THO 2 5 C Heating with the set temperature 55 C operates 3 3 Abnormal stop If a freeze prevention operation continues for 30 minutes and does not meet the end condition the operation stops as abnormal stop Remote controller check code A5 54 Item Operation flow and applicable data etc 8 3 8 2 Piping freeze prevention control 2 Hydro Unit TC and TWO activates freeze prevention regardless of a heat pump operation mode Control 1 Determination condition TWO gt 20 C 2 TC TWO lt 12 C is continuously detected for 30 seconds or longer Or TWO lt 20 C TC TWO lt 4 C is continuously detected 30 seconds or longer 2 Determination cancellation conditions The stop or operation mode is changed by the remote controller The mode is defrosting at the time of determination At the next time of defrosting the start condition is not met The mode is other than defrosting at the time of determination After cooling heating hot water heat pump restarts the start condition is not met for 10 minutes 3 Error display If freeze dete
72. le range 10 Hz to 70 Hz 802 1402H E 10 Hz to 60 Hz 1102H E 48 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 See the table below If the compressor frequency instruction from the hydro unit is less then 10 Hz the compressor stops TC gt 62 C causes the compressor to stop abnormally When the compressor restarts 140 seconds after the stop and TC gt 62 C is not detected for 20 minutes the abnormal stop counter is cleared 10 times of compressor abnormal stop stops the operation of heat pump and confirms the abnormality Display A11 If the heat pump operation is switched to other operation the abnormality detection counter is reset to 0 TC TWO 2 Zone Control operation T11 Forcible stop R1 compressor frequency by 1 2 Hz every 60 secs 62 0 C R2 Increase compressor frequency by 0 6 Hz every me P slow down SU secs T9 Decrease compressor frequency to 70 every 10 secs T8 P Decrease compressor frequency by 3 Hz every R2 slow up 10 secs T7 S normal Q Keep compressor frequency TC TWO 2
73. lement error operating with the compressor When an abnormal short circuit of IGBT wiring disconnected Check the p26 is detected M control board 8 98 2 No abnormality occurs when operating with the compressor wiring disconnected Compressor rare short Compressor rotor position error 1 Even if the connection lead wire of The rotor position in the compressor the compressor is disconnected it cannot be detected Stops due to an abnormality in the position detection Replace the P29 x 8 98 inverter control board 2 Check the wire wound resistor of the compressor Short circuit Replace the compressor 72 Defect mode detected by the remote control Diagnostic functional operation Check code Determination and action Operational cause Condition No communication between hydro Stop Defect in the remote control power Not unit an remote controller supply displaying at The remote control wiring is not 1 Check the remote controller wiring all connected correctly 2 Check the remote controller cannot The hydro unit has not been turned operate by on 3 Check the hydro unit power supply the remote wiring control 4 Check the water heat exchange control board No communication between hydro Stop Displayed when Defect the reception of the remote unit and remote controller Automatic reset the abnormality control Disconnection of the
74. lowers refrigeration cycle due to the current limit control and it i A 3 Check that the service valve is fully stops by underrunning the minimum open frequency 3 When an excess current is detected 0 8 sec or later after the compressor activation Compressor lock P 1 Defect of compressor lock 1 When the input current is more than Replace the compressor H02 zero 20 sec or later after the a 8 92 IE 2 Defect of compressor wiring open compressor activation and the phase activation has not been completed Defect the current detection circuit 1 Replace the outdoor inverter control 8 92 board 70 Diagnostic functional operation Number of Check naf abnormalities Detailed code Operational cause Backup Automat Determination and action for item P present ic reset confirmation Operation of case thermostat 1 Check the refrigeration cycle gas When the case thermostat exceeds leak 125 C 2 Check the case thermostat and Hod y connector T 3 Check that the service valve is fully open 4 Defect of the pulse motor valve 5 Check for a kinked piping Unset service PC board jumper L10 x 1 Cut J800 J803 1 92 Jumpers J800 J803 have not been cut S The communication between the outdoor PC board MUCs error L29 2999 r E 1 Replace the outdoor control board 1 93 No communication signal between IPDU and C
75. mm mm A B 3 8 9 52 0 8 13 0 13 2 9 7 20 18 5 8 15 9 1 0 19 1 19 7 15 9 24 5 26 Figure 2 2 2 Relationship between flare nut and flare surface 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 If the torque is weak gas leakage may occur If it is too strong the flare nut may crack and may be made non removable When choosing the tightening toque comply with values designated by products Table 2 2 5 shows reference values NOTE When applying oil to the flare surface be sure to use oil designated by the product Using any other oil deteriorates the lubricating oil possibly causing the compressor to burn out Table 2 2 5 Tightening torque of flare for R410A Reference values Nominal diameter Outer diameter mm Tightening torque Nem kgfem 3 8 9 52 33 to 42 3 3 to 14 2 5 8 15 9 66 to 82 6 8 to 8 2 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 12 7 c
76. n the refrigerant cycle is refilled with refrigerant do not enter air or refrigerants other than the specified refrigerant R410A A mixture of R410A with air or an inappropriate substance causes excessive high pressure inside the refrigerant cycle leading to an injury due to burst Check that there is no refrigerant gas leak after the installation is completed If it catches fire of a fan heater a space heater or a stove poisonous gases may be produced Be careful with wiring After a repair is completed be sure to reassemble the parts and put the wiring back to its original state In addition be careful with the internal wiring not to be caught in a cabinet or panel A defective assembly or wiring may cause a disaster at a customer site due to electrical leakage or a fire Check for water leak After the repair of a water pathway is completed check that there is no water leak n using the product water leak may cause a fire at a customer site due to electrical leakage or an electric shock N WARNING lt Check insulation gt 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 MQ or higher A low insulation resistance may cause a disaster at a customer site due to electrical leakage or an electric shock lt Ventilate gt Ventilate if refrigerant gas leaks during service work Shoul
77. ons 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 Hot water supply side Cooling side Normal Heater Heat pump Note that after a cooling heat pump operation is selected if the thermostat off status continues for 10 minutes and TTW lt 38 C is met the operation switches to a hot water supply operation Hot water supply side Cooling side Cooling thermostat off Heat pump Stop 10 min passed When TTW 2 45 C FC changeable is met the operation returns to the normal mode 6 Boiler assisted heating operation This operation is enabled when DPSW13 2 is ON A boiler exists zone Heat pump operation A heat pump operation is usually performed J zone Heat pump operation Boiler operation 1 A heat pump boiler operations 2 are performed and a heater operation is performed in the Hot water supply side TO zone Heat pump operation J zone Heat pump boiler operation 1 In J zone the hydro unit setting has a priority and when the set temperature is reached the boiler output also becomes OFF Setting FC 3E to 1 makes the boiler has a priority and even if the hydro unit set temperature is reached the boiler output remains ON 2 The boiler operation only gives boiler instruct
78. opper pipe of the refrigerant piping are lengthened Because the refrigerating machine oil is changed mixing of oil may generate sludge clog capillary or cause other problems Accordingly the tools to be used include tools dedicated for R410A Those that cannot be used for the conventional refrigerant R22 tools dedicated for R410A but can be also used for the conventional refrigerant R22 tools that can be used for the conventional refrigerant R22 The following table shows the tools dedicated for R410A and their interchangeability Tools dedicated for R410A The following tools must be for R410A Tools whose specifications are changed for R410A and their interchangeability Conventionalrefrigerant Air to Pump Air to Water Heat Pump installation No Tool to be used Usage For R410A Conventional New equipment can be Existenceofnew equipment can be used with conventional equipment used refrigerant 1 Flare tool Pipe flaring Yes Note 1 Yes Copper pipe gauge for Flaring by conventional x 2 adjusting projection margin flare tool Yes Note 1 Note 1 3 Torque wrench For 15 9 Connection of flare nut Yes No No 4 Gauge manifold Evacuatin fri g refrigerant 5 Charge hose charge run check etc Yes No No 6 Vacuum pump adapter Vacuum evacuating Yes No Yes Electrical balance for 7 refrigerant charging Refrigerant charge Yes No Yes 8 Refrigerant cylinder Refrigerant char
79. or TD TE sensor error 1 Check the resistance value and 85 FO6 Open or short circuit in the heat connection of the heat exchange 1 99 exchange temperature sensor temperature sensor TE TL sensor error 1 Check the resistance value and 86 FO7 Open or short circuit in the heat connection of the heat exchange 1 99 exchange temperature sensor temperature sensor TL TO sensor error 1 Check the resistance value and 86 208 Open or short circuit in the outdoor connection of the outdoor 1 99 temperature sensor temperature sensor TO TS sensor error 1 Check the resistance value and F12 Open or short circuit in the suction connection of the suction 1 100 temperature sensor temperature sensor TS TH sensor error 1 Check the resistance value and F13 Open or short circuit in the heat sink connection of the heat sink 1 100 temperature sensor temperature sensor TH TE TS sensors error 1 Check for any wrong installation of 15 Open or short circuit in the temperature x the heat exchange temperature 4 100 sensors sensor TE and the suction temperature sensor TS F31 EEPROM error x 1 100 Compressor breakdown 1 When the operation frequency lowers due to the current release 40 sec or later after the compressor activation 1 Check the power supply voltage and it in by underrunning the 230 V 23 V s des aaa A x 2 Over loaded condition of the d 2 When the operation frequency
80. 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 Flare and precautions 1 Cut a pipe Cut slowly with a pipe cutter so that the pipe is not distorted 2 Remove burr and flaw A burr or flaw in a flare part may cause refrigerant leak Remove carefully all the burrs and clean up the cut ends before installation 3 Insert a flare nut 4 Flare Check that the clasps and copper pipe are clean Flare correctly using the clasp Use a flare tool for R410A or the conventional one Flare processing dimension varies depending on the flare tool type When using the conventional flare tool use a gauge for size adjustment to secure the A dimension Figure 2 2 1 Flare dimension Table 2 2 3 Flare processing related dimension for R410A A mm Nominal Outer diameter Wall thickness diameter mm mm Flare tool for RA10A Conventional flare tool clutch type Clutch type Butterfly nut type 3 8 9 52 0 8 0 to 0 5 1 0 to 1 5 2 0 to 2 5 5 8 15 9 1 0 0 to 0 5 1 0 to 1 5 2 0 to 2 5 Table 2 2 4 Dimension of flare for R410A and flare nut Nominal Outer diameter Wall thickness Dimension mm Flare nut width diameter
81. or unit controls the compressor outdoor fan motor electric expansion valve and 4 way valve based on the operation signals transmitted by the hydro unit 3 Heating operation ZONE1 2 button set to ON Hydro unit control Operation instruction signal transmit Outdoor unit control Set temperature TSC F Heating temperature 20 C to 55 C Circulation pump ON OFF control Water 3 way valve control Water 2 way valve control Mixing Valve control Backup heater control Booster heater control Number of compressor revolutions control Number of outdoor fan motor revolutions control Pulse motor valve control 4 way valve control B 3S5 r C 80 paraaan D 25 E LE 20 1 4 2 20 T1 0 T3 20 A B C D E Setting available range 20 to 55 C T1 Setting available range 15 to 0 C T3 Setting available range to 15 Heating operation 1 2 Purpose Heating Details This section performs heating operation according to heating conditions specified for the steps in the left Operations 1 Set the ZONE 1 2 remote controller button to ON 2 The hydro unit controller starts to transmit a heating operation signal to the outdoor control unit 3 The hydro unit performs the operation controls shown in the left while also controlling the circulation pump backup booster heater ON OFF water 2 way valve and water 3
82. pe that is cracked distorted or discolored especially inside The expansion valve or capillary may get clogged with impurities Considering that Air to Water Heat Pump using R410A is higher in pressure than those using the conventional R22 be sure to select the material that comply with the standard Table 2 1 shows the thickness of copper pipe used for R410A Never use commercially available thin walled copper pipe of 0 8 mm thick or less Table 2 1 Wall thickness of copper pipe Wall thickness mm Nominal diameter Outer diameter R410A 3 8 9 52 0 80 5 8 15 88 1 00 Joints For the joint of copper pipe flared joint and socket joint are used Remove impurities from a joint before using it Flared joint A flared joint cannot be used for the copper pipe whose outer diameter is 20 mm or larger A socket joint can be used instead in that case Table 2 2 3 and 2 2 4 show the dimensions of flare pipe the end of flared joint and flare nuts Socket joint A socket joint is used to connect the thick walled pipe of mainly 20 mm or larger in diameter Table 2 2 shows the wall thickness of socket joints Table 2 2 The minimum wall thickness of socket joints Nominal diameter Reference of outer diameter of Minimum joint wall thickness copper pipe connected mm mm 3 8 9 52 0 80 5 8 15 9 1 00 2 2 2 Processing of piping materials When installing refrigerant pipe prevent water
83. peration status 2 If the operation stops with the remote controller the operation does not continue 9 Over current protection control 1 A detection of abnormal current with the over current protection control stops the compressor 2 Set the abnormality detection counter to 1 and restarts the compressor after 150 seconds 3 When the stop by over current protection control counts 8 times error code is displayed and the compressor does not restart Remote controller error code display HO1 62 Item Operation flow and applicable data etc 8 4 Outdoor unit control 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 sensor when heating 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 3 When the compressor stops in 2 the operation restarts when the temperature returns to the usual operation zone e or below after 150 seconds 4 When the compressor stops in 2 the abnormality detection counter is cleared when the operation continues for 10 minutes If the counter counts 10 times error code is displayed and the compressor does not restart 5 For details about an check code displayed see the check code list Heating TC Cooling TL Abnormal stop Frequency normal
84. ping is too long operatorn Started Installation of buffer tank and A01 3 Detection of chattering abnormality in s secondary pump the flow switch input Chattering detection Detects input 4 74 changes OFF 2ON 4 times within 10 seconds during operation 4 Disconnection of the flow switch connector 1 Disconnection of the flow switch When the stopped built in pump starts connector 2 74 its operation the flow switch status is 2 Defect of the flow switch detecting water flow Temperature increase error heating Heating 1 Check the water inlet water outlet When one of the TWI TWO and THO and heater outlet TWI TWO THO 02 sensors exceeds 70 C um sensors 1 75 2 Defect of the backup heater defect automatic reset thermostat Temperature increase error hot water Heating 1 Check the hot water cylinder sensor 03 supply TTW 1 76 When the TTW sensor exceeds 85 C Hot water 2 Check the hot water cylinder thermal x cut out Antifreeze operation 1 Almost no or little water flow 1 TWO gt 20 C condition Dirt clogging in the water piping 2xTC TWO lt 12 C is detected system 2 TWO lt 20 C condition The water piping is too long TC TWO lt 4 C is detected 2 Check the heater power circuit Heating2 3 TWIs 10 C is detected during Power supply voltage breaker Hot waters 77 defrosting power supply connection Cooli ooling4 3 Set the presence of the backup heater
85. r Unit 5 105 11 How to Exchange Main 5 127 12 Periodic Inspection 5 154 13 Part Exploded View Part 56 155 1 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 Indicates that a wrong operation may cause a service engineer and the third persons A DANGER around to get fatal or serious injuries Indicates that a wrong operation may cause a service engineer and the third persons N WARNING around to get fatal or serious injuries or that unit defective after the operation may cause a user to have a similar serious accident Indicates that a wrong operation may cause a service engineer and the third persons AN CAUTION around to get injuries or may cause property damage or that unit defective after the operation may cause a user to have a similar accident Property damage indicates extended damage to property furniture livestock or pets About symbols Symbols Meaning of Symbols S Indicates a forbidden action Specific forbidden actions are described in text near the symbol C Indicates a forcible must do ac
86. r each zone Number of rotation hold 38 35 1 tap 20 secs Up to the minimum number of rotation for each zone HWS 802H E Temnerat re ra ge Less than 20 Hz 20 Hiz or more to less 45 Hz or more Minimum Maximum Minimum Maximum Minimum Maximum 38 C lt TO W6 WC ws WE WA WE 29 C lt 38 C W5 WB W7 WD WD 15 C lt TO lt 29 C WA ws W6 WA ws wc 5 C lt lt 15 W3 W6 W5 ws W7 WA 0 C lt lt 5 C W2 WA WA W6 w5 ws 4 C lt lt 0 C W2 w3 w5 WA W6 TO lt 4 W2 OFF w3 TO abnormal OFF wc OFF WE OFF WE HWS 1102H E 1402H E 20 Hz or more to less Less than 20 Hz than 45 Hz 45 Hz or more Temperature range Minimum Maximum Minimum Maximum Minimum Maximum 38 lt TO W6 wc ws WC WA WD 29 C TO lt 38 C w5 WB W7 WB oe wg wc 15 lt lt 29 C WA ws W6 WA ws wc 5 C lt TO lt 15 W3 W6 w5 ws W7 WA 0 C lt lt 5 C W2 WA WA W6 w5 ws 4 C lt lt 0 C W2 w3 w3 w5 WA W6 TO lt 4 W1 W2 w1 WA W2 W6 TO abnormal W1 WC w1 WC W2 WD 59 Item Operation flow and applicable data etc 8 4 Outdoor unit control 5 2 Hot water supply and heating fan control 1 The TE sensor TO sensor and operation frequency control the outdoor fan The minimum W1 to the maximum are
87. r flux into the refrigerant cycle e If chlorine contained in the flux remains within the pipe the lubricating oil deteriorates Because of this use a flux that does not contain chlorine When adding water to the flux use water that does not contains chlorine e g distilled water or ion exchange water Remove the flux after brazing 2 5 3 Brazing Brazing must be performed by a person qualified and experienced with theoretical knowledge since the operation requires sophisticated techniques Perform brazing while flowing dry nitrogen gas N2 to prevent oxide film from forming during brazing application to the inside of the pipe NOTE Never use gas other than nitrogen gas Brazing method to prevent oxidation 1 Attach a reducing valve and a flow meter to the nitrogen cylinder 2 Use a copper pipe to direct the piping material and attach the flow meter to the balance 3 Apply a mark to the clearance between the piping material and the copper pipe filled with nitrogen to prevent the back flow of the nitrogen gas 4 If the nitrogen gas flows out be sure to keep open the piping end 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 Fig
88. r heat No exchanger board DPSW11 1 2 is ON Yes Backup heater or hot water cylinder terminal has 230ACV 23V No Power is connect to backup heater or hot water cylinder terminal Yes No Yes No Backup heater NG Backup heater element is conductive Yes Hot water cylinder heater element is conductive No Hot water cylinder heater NG Yes TWI TTW sensor characteristics are normal No See characteristic table in page 101 Yes Replace water heat exchange control board 83 A12 abnormality detection Set water heat board DPSW11 1 2 to ON Place electric wire for backup heater Place electric wire for hot water cylinder Set breaker for backup heater to ON Set breaker for hot water cylinder to ON or check indoor wiring Replace booster heater unit and safety valve Replace hot water cylinder heater Refer to hot water cylinder guide Replace TWI or TTW sensor
89. ration during forcible automatic operation A forcible automatic operation is performed when the power is on again after a power outage 7 3 Operation during defrosting operation When the power is on again after a power outage the usual operation restarts Note The operation details recorded before a power outage Operation mode Hot water supply Heating Cooling Hot water supply Heating Hot water supply Cooling Set temperature Hot water set temperature Heating set temperature Cooling set temperature Merit function Hot water supply operation Anti Bacteria Heating operation Night Set Back 8 Piping freeze prevention control This control operates when the power is on regardless the remote controller setting ON or OFF To prevent frost bursting of the water piping for hot water supply and heating the unit flows water with the circulation pump when the temperature sensor value falls below a certain temperature 8 1 Piping freeze prevention control 1 1 Start condition TWO lt 4 C or THWI lt 4 C or THO lt 4 C 2 End condition TWO 2 5 C TWI 2 5 C and THO 2 5 C 3 1 How to operate circulation pump When the circulation pump is not in operation if the sensor detects the freeze prevention control start temperature the unit operate the circulation pump During a freeze prevention operation a heat pump operation does not start When neither HOT WATER nor ZONE1 2 is in operation if the end cond
90. rature by 1 C every 30 minutes When the cooling room thermostat is OPEN the heat pump performs thermostat off During the thermostat off the operation raises the set water temperature by 1 degree every 30 minutes AS Correction control Heating operation Cooling operation OPEN Setting shift UP Thermostat ON Thermostat OFF Up water temperature by 1 deg every 30 Lower water temperature by 1 deg every mins 30 mins CLOSE Setting shift DOWN Thermostat OFF Thermostat ON Lower water temperature by 1 deg every Up water temperature by 1 deg every 30 30 mins mins 11 Forcible stop control Option board TCB PCMOSE is necessary Connect the connection cable to the water heat exchange board CN210 When CLOSE occurs between HEAT and COM of TCB PCMOSE the RED LED on the option board lights and the operation hot water supply heating cooling stops To restart the operation use the operation button of the remote controller 12 Output signal control 1 Option board TCB PCINSE is necessary Connect the connection cable to the water heat exchange board CN208 If an error detecting signal is output CLOSE occurs between the terminal 1 and 2 If a boiler output signal is output CLOSE occurs between the terminal 3 and 4 n either signal above is output the red LED on the Option board lights 13 Output signal control 2 Option board TCB PCINGE is necessary Connect the connection cable to the
91. rature 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 For 2 temperature control although Auto Curve in ZONE2 shows 80 of that of ZONE1 FC the water temperature setting does not fall below 20 C During an AUTO operation pressing again the AUTO button returns to the usual manual set heating operation The remote controller displays A as the temperature during an AUTO operation When 2 temperature control is enabled the remote controller displays A A Long pressing the AUTO button during an AUTO operation activates the Auto Curve FC change mode enabling the set Auto Curve water temperature to be changed in the 5K range FC_27 Even if the temperature setting is changed during an AUTO operation the operation continues An AUTO operation works with a heating operation only not with a cooling or a hot water supply operation Auto Curve ZONE1 40 A E ts ate ta deta RB BUID esses Oe MED wa ga x ay 5 8 e j Related FC FC No Setting item Default Setting available range 27 Set temperature shift with heating set to Auto 0 5 to5k 29 Outside air temperature T1 temperature 10 C 15 0 C 2B Outside air temperature T3 temperature 10 C 0 15 C
92. ring 3 wires including ground line Outdoor unit Connecting line 4 wires including ground line 1 Heating performance measurement conditions outside air temperature 7 or 6 C water supply temperature 30 C outlet temperature 35 C refrigerant piping length 7 5 m no height difference capacity 2 97 COP 2 95 operating noise lt 3 dB 2 Cooling performance measurement conditions outside air temperature 35 C water supply temperature 12 C outlet temperature 7 C refrigerant piping length 7 5 m no height difference capacity 2 97 COP 2 95 operating noise lt 3 dB 3 The remote controller should be shipped with the hydro unit Use two 1 5 meter wires to connect the hydro unit with the remote controller 4 The outdoor unit operating noise is measured at the point of 1m away from the unit back surface center and 1m high from the ground The hydro unit operating noise is measured at the point of 1m away from the unit front surface center The value of the operating noise varies depending on room structure where the unit is installed 5 Do not leave the hydro unit at 5 C or below 6 Check the water piping for leakage under the maximum operating pressure 16 4 outside Drawing 4 1 Hydro unit HWS 802XWHM3 E 802XWHT6 E HWS 1402XWHM93 E 1402XWHT6 E 1402XWHT9 E 2 dia 12x17 long hole for dia 8 10 anchor bolt 380 gt part Anchor bolt long hole pitch
93. rmination cancellation condition is not met A4 error is displayed 8 3 Piping freeze prevention control 3 This control applies only when defrosting is in operation 1 Determination condition During defrosting TWI 15 C is continuously detected for 30 seconds or longer After the stop the unit restarts 2 Determination cancellation condition Atthe next time of defrosting the start condition is not met 3 Error display If freeze determination cancellation condition is not met A4 error is displayed 8 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 1 Determination condition Lo pressure sensor detects PS 0 2 MPa and 30 seconds passes defrosting and cooling During a defrosting operation for cooling and heating or hot water supply Lo pressure sensor detects PS 0 2 MPa and 10 minutes passes heating and hot water supply operation 2 Determination cancellation condition After a restart the start condition is not met for 30 minutes Atthe next time of defrosting the start condition is not met Defrosting operation for heating or hot water supply 3 Error display If freeze determination cancellation condition is not met A8 error is displayed 9 High return water protect control The hydro unit protects against high return water which made by separate boiler system TWI TWO THO A02 error detect 70
94. ro unit controller transmits an operation instruction to the outdoor unit and uses serial signals to transmit and receive control statuses 5 The outdoor unit control unit performs the operation controls shown in the left while also controlling the compressor outdoor fan motor pulse motor valve and 4 way valve 36 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 Hot water supply Hot water temperature 40 C to 75 button set to p 2 Details 1 This section performs hot water supply operation according to heating Aydro unit Circulation pump ON OFF control conditions specified for control Water 3 way valve control the steps in the left Hot water cylinder heater control 3 Operations Operation instruction signal transmit Number of compressor revolutions control Outdoor unit control Number of outdoor fan motor revolutions control Pulse motor valve control 4 way valve control 1 Set the HOT WATER remote controller button to ON 2 The hydro unit controller starts to transmit a hot water supply operation signal to the outdoor unit control unit 3 The hydro unit performs the operation controls shown in the left while also controlling the circulation pump hot water cylinder heater ON OFF 4 The outdo
95. ro unit and the aUh ko Lolo UN Peet oe acer ance te ere 65 9 1 3 About the installation of the temperature 65 9 2 Non defective operation program operation No fault code display appears 65 9 3 Outline of the determination 66 9 3 1 Procedure of defect diagnosis 2 2 66 9 3 2 How to determine from the check code the remote control 66 9 3 3 How to cancel a check code on the remote controller 66 9 3 4 How to diagnose by error eh 67 9 4 Diagnosis flow chart for each error code 74 9 4 1 Hydro unit failure 74 9 4 2 Outdoor Unit Failure Detection 91 9 4 3 Temperature sensor temperature resistance characteristic table 101 9 5 Operation check by PC board switch 2 102 9 5 1 Operation check mode 102 9 6 Brief method for checking the key 103 9 6 1 Hydro unit 22 o EPIS d a a a a do S EARN LIS 103 9 6 2 Outdoor hit iiec b LC RA wee Pee a egi 104 10 Hydro unit and Outdoo
96. rol energizes the inactive compressor instead of the case heater to warm the compressor The purpose is 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 Also when starting an operation long after the power left off first energize the compressor before starting the operation in the same way as a trial run 3 Energization is determined by the TD sensor and TO sensor If the TO sensor fails the TE sensor automatically takes over the operation Determine whether the TO sensor fails by checking the LED outside 4 If TD is 30 C or higher the energization stops Usual Not energized l Energization i condition i TD 30 C 10 Intermittently energized 10 mins ON 5 mins OFF Output equal to 40W BO pec eem Continuously energized Output equal to 40W when TO sensor fails TE 20 Not energized Intermittently energized 10 mins ON 5 mins OFF Output equals to 40W Continuously energized Output equals to 40W HOSE pese Notes During winding energization energizing noise may be heard but this is not abnormal 8 Short circuit operation prevention control 1 In 10 minutes after the operation start the compressor may not stop for protection This status is not abnormal The operation duration time of the compressor varies depending on a o
97. s at the set start time 3 Press TEST 2 to exit the nighttime low noise time setting mode The and 45 goes out returning to its original status 47 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 Calculates the different between the remote controller set temperature TSC_H TSC_F and the water outlet temperature Hot water supply THO Heating TWO Sets the Hz signal correction amount that determines the number of compressor rotations by the temperature difference Detects the number of compressor rotations according to the difference Remote controller Temperature settings TSC_H TSC_F Hydro unit THO TWO SC_H THO for hot water supply TSC_F TWO for heating cooling Hz signal correction Number of compressor rotation detection z signal correction S Operation HZ Inverter output change Number of compressor rotation change Compares the Hz signal correction amount and the current operation Hz and changes the compressor output The control details are the same for hot water supply heating and cooling Water outlet temperature Compressor frequency changeab
98. s selected Thermostat status OFF When TWI 2 TSC_F e zone in the right figure is met the thermostat status OFF is selected TSC_F is a heating temperature set with remote controller Heat pump operation 3 Operation stop condition When the following condition is met the heating operation stops The remote controller gives a stop instruction 1 When the outside temperature is 20 C or below the heater operation is selected even if the TTW temperature falls into zone 2 When Hot water supply and Heating are simultaneously in operation the heater operation may be selected depending on the outside air temperature Related FC FC No Setting item Default Setting available range 1A Upper limit of heating Zone1 limited temperature 55 37 55 C 1B Lower limit of heating Zone1 limited temperature 20 20 37 C 1C Upper limit of heating Zone2 limited temperature 55 37 55 C 1D Lower limit of heating Zone2 limited temperature 20 20 37 C 40 Control Method 1 Operation start condition Pressing the ZONE1 2 button and then OPERATION MODE starts a cooling operation 2 Operation mode selection An operation mode is determined according to the temperature of TWI sensor Heat pump operation selection 1 2 When 2 TSC F d zone in the right figure is met the heat pump operation is selected Thermostat status
99. selected Heater operation selection When 45 lt TTW lt TSC b zone the right figure is met the heater operation is selected Thermostat status OFF selection When TTW 2 TSC H is met the thermostat status OFF is selected TTW sensor Hot water cylinder unit TTW TSC H Temperature set with Thermostat OFF Zone 3 Operation sto Operation stop remote controller The operation stops in the following cases The remote controller gives a stop instruction TTW 2 TSC H is met HP H OFF 45 C HP H ON 38 C Heat pump operation 1 When the outside temperature is 20 C or below the heater operation is selected even if the TTW temperature falls into a zone 2 When Hot water supply and Heating are simultaneously in operation the heater operation may be selected depending on the outside air temperature TSC Hiis hot water temperature Set with remote controller Related FC FC No Setting item Default Setting available range 1E Upper limit of hot water supply temperature 75 C 60 80 C 1F Lower limit of hot water supply temperature 40 C 40 60 20 Heat pump start temperature 38 C 20 45 C 21 Heat pump end temperature 45 C 40 50 C 24 Outside air correction start temperature for hot water supply 0 C 20 10 C 25 Outside air correction temperature for hot water supply 3 deg 0 15 deg 3 When the outside temperature is 0 C or
100. t TEMP SELECT CO SCHEDULE NIGHT ZONE 1 2 HOT WATER o gt NE J TIME DAY STEP OPERATEMODE HOT WATER BOOST OD OO e SET CL TEST ROSTPROTECTION AUTO TEMP ANTI BACTERIA CX CE JE 9 3 3 How to cancel a check code on the remote controller ZONE1 2 HOT WATER 1 1 Press or button on the operation side to clear the check code 2 Press amp to stop a buzzer for an abnormality only Although the above procedure cancels the check code the hardware error will be displayed again until the hardware repair is completed 66 9 3 4 How to diagnose by error code Defect mode detected by the water heat exchange min elapsed and heater outlet sensors TWI TWO THO 3 Disconnection of the backup heater O Possible x Not possible Diagnostic functional operation od Operational eause Backup Automat Determination and action a lc i ren present ic reset confirmation Pump or flowing quantity error 1 Detected by TC sensor TC2 63 C is detected the heating or 4 74 hot water supply heat pump operation except for defrosting 1 Almost no or little water flow Not enough vent air 2 Detected by flow switch abnormality Dirt clogging in the water piping When no signal of the flow switch is system 2 74 showing 2 min after the built in pump The water pi
101. tal surface assists the flow of brazing metal Flux prevents the metal surface from being oxidized in the course of brazing Reducing the brazing metal s surface tension enables the brazing metal to adhere for better metal processing Characteristics of flux The activation temperature of flux matches the brazing temperature wide effective temperature range makes flux hard to carbonize It is easy to remove slag after brazing The corrosive action to the treated metal and brazing metal is minimum The good performance of flux gives no harm to a human body Since flux works in a complicated manner as described above select an appropriate type of flux according to metal treatment type brazing metal and brazing method or other conditions 13 Type of flux Non corrosive flux It is generally a compound of borax and boric acid It is effective when brazing temperature is higher than 800 C Active solvent Most of this type of flux is generally used for silver brazing Itfeatures the increase of oxide film while moving the capability to the borax boric acid compound to add compounds such as potassium fluoride potassium chloride or sodium fluoride Piping materials for brazing and brazing metal flux Piping material Bragg to be Flux to be used Copper Copper Phosphor copper Do not use Copper Iron Silver Paste flux Iron Iron Silver Vapour flux NOTE Do not ente
102. tion Specific forcible actions are described in text near the symbol Indicates a caution including danger and warning ZN Specific cautions are described in picture or text inside or near the symbol DANGER lt Turn off the power breaker gt Turn off the power breaker before removing the front panel and cabinet Failure to do so may cause a high voltage electric shock leading to death or injury During an operation the second side circuit of high pressure transmission are applied with high voltage of 230V or higher Touching the circuit even with an electrical insulator let alone a bare hand or body causes an electric shock For details see the schematic lt Discharge between terminals gt When the front panel and cabinet are removed make short circuit current to discharge between high pressure capacitor terminals Failure to do so may cause a high voltage electric shock leading to death or injury After the power is turned off the high pressure capacitor is still charged with high voltage lt Forbidden gt Do not turn on the power breaker after removing the front panel cabinet Failure to do so may cause a high voltage electric shock leading to death or injury N WARNING lt Check earth ground gt Before starting failure diagnosis or repair check that the ground wire is connected to the unit ground terminal An unconnected ground wire
103. unsell 1Y8 5 0 5 Compressor Motor output W 1400 Type Twin rotary type with DC inverter variable speed control Model DA220A2F 22L Fan motor Standard air capacity m min 50 0 Motor output W 60 Refrigerant piping Connection method Flare connection Hydro unit Liquid 29 52 Gas 215 9 Outdoor unit Liquid 29 52 Gas 015 9 Maximum length m 30 Maximum chargeless length m 30 Maximum height difference m 30 Minimum length m 5 Refrigerant Refrigerant name R410A Charge amount kg 1 8 Water piping Pipe diameter R1 1 4 Maximum length m None Need the flow rate 17 5 f min or more Maximum height difference m 7 Maximum working water pressure kPa 300 Operating temperature range Hydro unit C 5 32 Outdoor unit C 20 43 Operating humidity range Hydro unit 96 15 85 Outdoor unit 96 15 100 Wiring connection Power wiring 3 wires including ground line Outdoor unit Connecting line 4 wires including ground line 1 Heating performance measurement conditions outside air temperature 7 or 6 C water supply temperature 30 C outlet temperature 35 C refrigerant piping length 7 5 m no height difference capacity 2 97 COP 2 95 operating noise lt 3 dB 2 Cooling performance measurement conditions outside air temperature 35 C water supply temperature 12 C outlet temperature 7 C refrigerant piping length 7 5 m no height difference capacity 2 97 COP 2 95 operating noise lt 3 dB 3
104. ve UKV 25D100 Outdoor heat Compressor 4 way valve Plate type 1 1 exchanger 1 2500 34 Hydro unit Expansion vessel Manometer o Water vent valve C Air vent valve Backup heater Safety valve _ Circulating pump UPS25 80 130 gt Flow switch VH 8705 t e 8 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 3 Heating operation 4 Cooling operation 36 38 8 2 Operation Mode and Control Method 1 Hot water supply operation 2 Heating operation 3 Cooling operation 4 Simultaneous operation of hot water supply and heating 5 Simultaneous operation of how water supply and cooling 6 Boiler assisted heating operation 7 HOT WATER BOOST operation 8 Anti bacteria 9 Night setback operation 10 FROST PROTECTION operation 11 AUTO operation 12 Nighttime low noise operation 39 47 8 3 Hydro Unit Control 1 Capacity control compressor high temperature release low temperature release 2 Heater control 3 Circulation pump control 4 Flow switch control 5 Mixing valve control 2 temperature heating control 6 Q H characteristics of hydro unit 7 Automatic restart control 8 Piping anti freezing
105. w Operating noise at normal time At normal temperature tank thermosta is energized Hot water cylinder thermostat operates Replace hot water cylinder thermostat Operation temperature 82 C Yes Replace water heat exchange control board 76 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 gt rating the freeze prevention control may be activated Start Operation restart Perform air vent Excess air Yes inside pump No Chattering from flow switch No Water heat exchanger board DP_SW11 1 is ON Yes No Secure water Dirt clogging circulation amount in inside water circuit Circulation flow shortage Replace flow switch inside strainer etc 12 M or longer water pipe to Fit buffer tank and the second pump a branch or 5 or less branches Set DP SW11 1 to ON Power is connect to backup heater terminal No Yes Backup heater element is conductive No Backup heater NG Yes C TWO TW sensor characteristics are correct No See Characteristic table on page 101 Yes Replace water heat exchange control board 77 Connect backup heater power cable Set heater breaker to ON Check indoor wiring Replace backup heater unit Replace TC
106. water heat exchange board CN209 When defrosting is in operation CLOSE occurs between the terminal 1 and 2 When the compressor is in operation CLOSE occurs between the terminal 3 and 4 In either signal above is output the red LED on the OP board lights Terminal label 56 Item Operation flow and applicable data etc 8 4 Outdoor unit control 1 PMV Pulse motor valve control Valve opening is controlled using the expansion valve with a pulse motor according to a heat pump operation status PMV is controlled between 30 and 500 pulses during an operation At the time of a cooling operation PMV is controlled with the usual target value of 1 to 4 K temperature difference between TS sensor and TC sensor At the time of a hot water supply or heating operation PMV is controlled with the usual target value of 2 to 4 K for 802H E or 1 to 4 K for 1102 1402H E temperature difference between TS sensor and TE sensor For both cooling and heating if the cycle is overheated PMV is controlled using the TD sensor The usual target value is 91 C for a cooling operation and 96 C for a heating operation A defective sensor may cause liquid back flow or abnormal overheat of the compressor significantly shortening the compressor life If the compressor or other equipment is repaired first check that the resistance of each sensor or the refrigerant cycle has no problem then start the operation
107. way valve 4 The outdoor unit controls the compressor outdoor fan motor electric expansion valve and 4 way valve based on the operation signals transmitted by the hydro unit 37 Item Operation flow and applicable data etc Operation description 8 1 Basic Operation 4 Cooling operation ZONE1 2 button set to ON Hydro unit control Operation instruction signal transmit Outdoor unit control Cooling temperature 10 C to 25 C Circulation pump ON OFF control Water 3 way valve control Water 2 way valve control Number of compressor revolutions control Number of outdoor fan motor revolutions control Pulse motor valve control 4 way valve control NOTE No coding mode in default setting When use the cooling mode please change the FC02 to 0 Related FC FC No Setting item Default Setting available range 02 Cooling mode availability 1 0 Yes 1 Purpose Cooling 2 Details This section performs cooling operation according to cooling conditions specified for the steps in the left 3 Operations 1 Set the ZONE1 2 remote controller button to ON 2 The hydro unit controller starts to transmit a cooling operation signal to the outdoor unit control unit 3 The hydro unit controller performs the operation controls shown in the left while also controlling the circulation pump water 2 way valve and water 3 w
108. xing Valve control time 4 1 30 mins 6 Q H characteristics of hydro unit The following shows the Q H characteristics 6 1 HWS 801XWHM3 E T6 E Hydraulic heat exchanger 8kW QH characteristics Minimum flow rate Pump head m Out of Operation Range 15 20 Flow rate L min 6 2 HWS 1402XWHM3 E T6 E T9 E Hydraulic heat exchanger 14kW QH characteristics Minimum flow rate 10 9 8 7 6 oO g 5 SW3 t Operation Swe 2 Range E 1 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 Flow rate L min 53 Item Operation flow and applicable data etc 8 3 Hydro Unit Control 7 Automatic restart control The unit records operation information before a power outage and retrieves the information after the power is on again to restart automatically the operation with the information 7 1 Operation during remote controller The operation status before a power outage automatically restarts after the power is on again The merit functions are also enabled Approximately 6 hours or more after a power outage The operation status before a power outage automatically restarts after the power is on again But the merit functions Night Set Back Anti Bacteria are disabled The remote controller time displays The merit functions are disabled 7 2 Ope

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