Daikin EUWA/Y5-30HB/C(Z) Service Manual Download

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SECONDARY WATER CIRCUIT

CHILLER

PRIMARY WATER CIRCUIT

ESIE98-06A

Service Manual

EUWA/Y5-30HB/C(Z)

Small air-cooled water chillers

Daikin Europe NV

Summary of Contents for EUWA/Y5-30HB/C(Z)

Page 1: ...IRCUIT SECONDARY WATER CIRCUIT CHILLER PRIMARY WATER CIRCUIT PRIMARY WATER CIRCUIT C C H H 4 3 7 7 5 6 1 2 16 10 11 11 14 15 13 9 9 8 12 ESIE98 06A Service Manual EUWA Y5 30HB C Z Small air cooled wat...

Page 2: ......

Page 3: ...at Is in This Chapter 1 21 2 2 Functional Diagram Refrigeration Circuit for EUWA5 30HB C Z 1 22 2 3 Main Parts Refrigeration Circuit for EUWA5 30HB C Z 1 24 2 4 Functional Diagram Refrigeration Circui...

Page 4: ...Cool Heat and Temperature Setting 2 18 2 4 What Happens in Case of an Alarm or a Warning 2 20 2 5 Settings Direct and User Parameters 2 21 2 6 How to Read or Adjust Parameter Settings the Programming...

Page 5: ...Z 3 10 2 4 Safeties Overview 3 12 3 Checking the Inputs and Outputs 3 1 What Is in This Chapter 3 13 3 2 Checking the Temperature Sensors 3 14 3 3 Checking the Digital Inputs and Outputs 3 17 3 4 Che...

Page 6: ...1 4 5 Part 4 Commissioning and Test Run 4 1 1 Pre Test Run Checks 1 1 What Is in This Chapter 4 3 1 2 General Checks 4 4 1 3 Water Piping Checks 4 5 1 4 Electrical Checks 4 7 2 Test Run Operation Dat...

Page 7: ...sult the check lists in Pre Test Run Checks on page 4 3 Two controllers The digital controller for chiller types EUWA Y5 10HB Z differs from the digital controller for chiller types EUWA Y15 30HC Z Us...

Page 8: ...Introduction ESIE98 06A vi 3 1 4 5...

Page 9: ...e EUWA Y5 30HB C Z chiller types Once all the elements of the installation are briefly described and the installation set up is understood a functional description of all elements will be given in the...

Page 10: ...ESIE98 06A 1 2 Part 1 System Outline 3 1 1 4 5...

Page 11: ...apter Introduction In this chapter you will find the outlook drawing and the installation outline of the water chillers EUWA Y5 30HB C Z Overview This chapter covers the following topics Topic See pag...

Page 12: ...B51 30H CB51 50H CB51 60H CB51 60H CB51 30H 2xCB51 60H 2xCB51 60H CB51 30H 3xCB51 60H water flow rate Min 17 l min Max 75 l min Min 30 l min Max 120 l min Min 40 l min Max 145 l min Min 50 l min Max 2...

Page 13: ...ondition till 25 C refrigerant charge 3 6 kg 5 1 kg 5 9 kg 5 9 3 6 kg 2x5 9 kg 2x5 9 3 6 kg 3x5 9 kg refrigerant control capillary tube oil type SUNISO 4GSDID K Dimensions h x w x d 1444 x 645 x 700 m...

Page 14: ...stem 1 114 l 171 l 243 l 490 l 490 l 700 l 975 l water flow rate Min 17 l min Max 75 l min Min 30 l min Max 120 l min Min 40 l min Max 145 l min Min 60 l min Max 220 l min Min 80 l min Max 290 l min M...

Page 15: ...ondenser water temperature from 35 C till 55 C refrigerant charge 3 6 kg 5 1 kg 5 9 kg 5 9 3 6 kg 2x5 9 kg 2x5 9 3 6 kg 3x5 9 kg refrigerant control capillary tube oil type SUNISO 4GSDID K oil charge...

Page 16: ...em 1 120 l 210 l 250 l 500 l 500 l 740 l 1000 l water flow rate Min 18 l min Max 60 l min Min 30 l min Max 100 l min Min 38 l min Max 120 l min Min 56 l min Max 180 l min Min 76 l min Max 240 l min Mi...

Page 17: ...FVC68D FVC68D FVC68D FVC68D oil charge volume 1 5 l 2 7 l 2 7 l 2 7 1 5 l 2x2 7 l 2x2 7 1 5 l 3x2 7 l n of circuits 1 1 1 2 2 3 3 Dimensions h x w x d 1444 x 645 x 700 mm 1220 x 1290x 700 mm 1444 x129...

Page 18: ...rting current 49 A 88 A 79 A 142 A 109 A 183 A 49 A 88 A 109 A 183 A 109 A 183 A 49 A 88 A 109 A 183 A 109 A 183 A max running cur rent 10 A 17 A 18 A 28 A 21 A 34 A 10 A 17 A 21 A 34 A 2x21 A 34 A 2x...

Page 19: ...n condition till 25 C a leaving condenser water temperature from 35 C till 55 C Model EUWY5HB EUWY8HB EUWY10HB EUWY15HC EUWY20HC EUWY25HC EUWY30HC Compressor phase 3 Voltage 220 380 V starting current...

Page 20: ...1 A 34 A 10 A 17 A 21 A 34 A 2x21 A 34 A 2x21 A 34 A 10 A 17 A 3x21 A 34 A starting method direct on line voltage 400 V 230 V nominal running current 6 6 A 11 4 A 10 4 A 18 A 13 1 A 22 8 A 6 6 A 11 4...

Page 21: ...oduction Below you will find the outlook drawings of the EUWA Y5 30HB C Z chiller types The diagrams indicate the following important items dimensions service space main components location operation...

Page 22: ...General Outline ESIE98 06A 1 14 Part 1 System Outline 3 1 1 4 5 EUWA Y8HB Z The figure below displays the outlook of the chiller types EUWA Y8HB Z...

Page 23: ...ESIE98 06A General Outline Part 1 System Outline 1 15 3 1 4 5 1 EUWA Y10HB Z The figure below displays the outlook of the chiller types EUWA Y10HB Z...

Page 24: ...General Outline ESIE98 06A 1 16 Part 1 System Outline 3 1 1 4 5 EUWA Y15HC Z The figure below displays the outlook of the chiller types EUWA Y15HC Z...

Page 25: ...ESIE98 06A General Outline Part 1 System Outline 1 17 3 1 4 5 1 EUWA Y20HC Z The figure below displays the outlook of the chiller types EUWA Y20HC Z...

Page 26: ...General Outline ESIE98 06A 1 18 Part 1 System Outline 3 1 1 4 5 EUWA Y25HC Z The figure below displays the outlook of the chiller types EUWA Y25HC Z...

Page 27: ...ESIE98 06A General Outline Part 1 System Outline 1 19 3 1 4 5 1 EUWA Y30HC Z The figure below displays the outlook of the chiller types EUWA Y30HC Z...

Page 28: ...General Outline ESIE98 06A 1 20 Part 1 System Outline 3 1 1 4 5...

Page 29: ...e and is therefore not described Overview This chapter covers the following topics Topic See page 2 2 Functional Diagram Refrigeration Circuit for EUWA5 30HB C Z page 1 22 2 3 Main Parts Refrigeration...

Page 30: ...onal Diagram Refrigeration Circuit for EUWA5 30HB C Z Functional diagram EUWA5 30HB C The figure below displays the functional diagram of the refrigeration circuit of the chiller types EUWA5 30HB C Th...

Page 31: ...functional diagram of the refrigeration circuit of the chiller types EUWA5 30HB C Z with or without glycol application The numbers on the drawing refer to the numbers in the table on page 1 24 MC EUWA...

Page 32: ...heat exchanger is of the brazed plate heat exchanger type 5 Capillary tubes Used for R 22 models EUWA5 30H Expansion valve Used for R 407C models EUWA5 30HZ 6 High pressure switch The setting is 28 ba...

Page 33: ...C The figure below displays the functional diagram of the refrigeration circuit of the chiller types EUWY5 30HB C The numbers on the drawing refer to the numbers in the table on page 1 27 SHP MC YRV...

Page 34: ...Functional diagram EUWA5 30HB C glycol application The figure below displays the functional diagram of the refrigeration circuit of the chiller types EUWA5 30HB C with glycol application The numbers...

Page 35: ...pe BSP The pipes are not insulated for EUWY5 30H and are insulated for EUWA5 30H Z with glycol application If Copper field piping is used for the water circuit then pre caution should be taken for ele...

Page 36: ...Piping Layout ESIE98 06A 1 28 Part 1 System Outline 3 1 1 4 5...

Page 37: ...his chapter is to guide you through the PCBs and the wiring diagrams Therefore we use schematic drawings and wiring diagrams which indicate and locate the necessary information Overview This chapter c...

Page 38: ...circuit of the chiller types EUWA Y5 10HB Z Power Supply MCHRTF fan control G0 B1 B2 B3 ID5 ID3 ID1 comp line X2 X1 line heatertape 4 way valve amb probe outlet probe inlet probe Evaporator thermostat...

Page 39: ...ct ID2 GND S7S remote cool heat ID3 GND K11 Q1D K4S HP discharge temperature overcurrent ID4 GND S16T evaporator thermostat ID5 GND S9S remote ON OFF B1 GND R3T sensor inlet water B2 GND R4T sensor ou...

Page 40: ...Y15 30HC Z G G0 VG0 VG1 Y1 Y0 ID11R ID11 ID12R ID12 NO11 C11 NC11 NO10 C10 NC10 NO9 C9 NC9 NO8 C8 NO7 C7 NO6 C6 NO13 C13 B8 24Vcc B7 B6 AVSS B5 B4 AVSS B3 B2 AVSS B1 IDCM2 ID10 ID9 ID8 ID7 ID6 IDCM1 I...

Page 41: ...3 K3A auxiliary relay for safety circuit 3 ID4 S7S field wiring switch for remote cool heat selection ID5 S10L S11L field wiring flow switch pump contact J5 C1 NO1 K1M compressor contactor circuit 1 C...

Page 42: ...g diagrams of the following chiller types are displayed on the pages below Chiller type See page EUWA5 8 10HB page 1 35 EUWY5 8 10HB page 1 36 EUWA5 8 10HBZ page 1 37 EUWA15 20HC page 1 38 EUWY15 20HC...

Page 43: ...r switch contact that closes if pump is working flowswitch switch for remote start stop high pressure switch ambient temperature sensor outlet water temperature sensor inlet water temperature sensor r...

Page 44: ...r temperature sensor inlet water temperature sensor reverse phase protector thermal protector fan discharge thermal protector main earth terminal compressor motor fan motors auxiliary relay pumpcontac...

Page 45: ...sensor inlet water temperature sensor reverse phase protector thermal protector fan discharge thermal protector main earth terminal compressor motor fan motors auxiliary relay pumpcontactor contactor...

Page 46: ...mperature measurement outlet water temperature sensor sensor for evaporator condensor inlet water t d measurement reverse phase protector thermal protector fan 1 2 discharge thermal protector circuit1...

Page 47: ...closes if pump is working flowswitch switch for remote start stop high pressure switch for circuit1 circuit2 sensor for ambient temperature measurement outlet water temperature sensor sensorforevapor...

Page 48: ...poratorheatertape S25T thermostatforliquidinjectioncircuit1 circuit2 S19T S20T evaporatingtemperaturethermostatcircuit1 circuit2 S16T S17T mainisolatorswitch S12S contactthatclosesifpumpisworking S11L...

Page 49: ...wswitch switchforremotestart stop highpressureswitchforcircuit1 circuit2 circuit3 sensorforambienttemperaturemeasurement outletwatertemperaturesensor sensorforevaporator condensorinletwatert dmeasurem...

Page 50: ...switchforremotestart stop highpressureswitchforcircuit1 circuit2 circuit3 sensorforambienttemperaturemeasurement outletwatertemperaturesensor sensorforevaporator condensorinletwatert dmeasurement reve...

Page 51: ...temperature measurement outlet water temperature sensor sensor for evaporator condensor inlet water t d measurement reverse phase protector thermal protector fan 1 2 discharge thermal protector circui...

Page 52: ...ESIE98 06A Wiring Layout Part 1 System Outline 1 44...

Page 53: ...ulted in the Input Output Menu on page 2 39 Item Code s contact Description EUWA5 10HB Z EUWY5 10HB EUWA15 20HC Z EUWY15 20HC EUWA25 30HC Z EUWY25 30HC Remark 1 L1 L2 L3 N PE power supply to unit X X...

Page 54: ...to unit L1 L2 L3 N PE 2 S12S mains isolator L1 L2 L3 N PE 3 S7S remote cool heat setting 78 79 5 S9S remote start stop 77 76 6 S10L S11L flow switch pump contact 77 75 7 KP pump contactor output 73 7...

Page 55: ...pump contact 72 76 7 KP pump contactor output 77 78 8 H1P remote alarm indication 79 80 9 H2P general operation indication 81 82 10 H3P circuit 1 operation indication 83 84 11 H4P circuit 2 operation...

Page 56: ...p contactor output 77 78 8 H1P remote alarm indication 79 80 9 H2P general operation indication 81 82 10 H3P circuit 1 operation indication 83 84 11 H4P circuit 2 operation indication 85 86 12 H5P cir...

Page 57: ...oubleshooting An extensive overview of the functioning of the controllers is also given in this part Knowledge of the controllers is indispensable to gain valuable information prior to servicing and t...

Page 58: ...ESIE98 06A 2 2 Part 2 Functional Description 3 1 2 4 5...

Page 59: ...tal when diagnosing a malfunction which is related to the functional control Overview This chapter covers the following topics Topic See page 1 2 Operation Range page 2 4 1 3 Operation Flowchart page...

Page 60: ...nd in heating mode with R 22 38 43 4 16 25 0 15 5 36 0 5 10 ZL ZH Glycol Water Standard outdoor temperature C leaving water temperature C standard option Range for pull down operation Protect the wate...

Page 61: ...ure C leaving water temperature C standard option Range for pull down operation Protect the water circuit against freezing for EUWA8 10HBZ If the units operate below 5 C and are installed in a rather...

Page 62: ...C Z The operation of chiller types EUWA5 30HB Z is clarified in the schematic diagram below EUWY5 30HB C The operation of chiller types EUWY5 30HB is clarified in the schematic diagram below Power on...

Page 63: ...tarts The minimum time interval between two defrost cycli is 20 minutes Start condition detail for EUWY15 30HC The relation between the coil sensor temperature and the ambient temperature for chiller...

Page 64: ...op defrost start defrost stop defrost Tcoil 10 C Tcoil 0 6xTamb 10 3 Tcoil 10 C 150 s timer 1 20 min timer 3 10 min timer 2 10 min and stopped timer 2 150 s timer 1 Display EUWY5 10HB d1 Display EUWY1...

Page 65: ...llowing picture shows the layout of the defrost PCB An overview of the inputs and outputs of the defrost PCB is given in Defrost PCB on page 3 6 C D T1 T2 A 3 3 B CN 1 CN 2 green LED C P U defrost swi...

Page 66: ...ircuit layout The following table gives information concerning the horsepower per circuit Defrost possibilities The first column in the following table shows the circuits that are in defrost The other...

Page 67: ...Screen 3 of the user settings menu provides the ability to modify the thermostat parameters c cooling set point d heating set point c d compressor ON OFF inlet water temperature Description Lower lim...

Page 68: ...2 fans steps for EUWA5 10HB in cooling mode Fansteps incooling mode with option EKHP8 10K Head pressure control enables an extra fan step when the EKHP8 10K kit for operation range down to 15 C optio...

Page 69: ...re control as part of the standardized switch box For the EUWY head pressure control is not used to its full extend while its operation range is limited to 15 C In the wiring diagram this head pressur...

Page 70: ...ze up protection to control the evaporating temperature The following table shows all the characteristics of soft and hard freeze up protection 1 Alarm is on hold and reset goes automatically Characte...

Page 71: ...arn to work with the controller for the chiller types EUWA Y5 10HB Z Overview This chapter covers the following topics Topic See page 2 2 The EUWA Y5 10HB Z Controller page 2 16 2 3 Start Stop Cool He...

Page 72: ...l list of parameters press for 5 s to save a parameter modification to return to normal operation m to deactivate the buzzer in case of an alarm u to scroll up through the list of direct user paramete...

Page 73: ...wering the unit note 1 pv d the unit EEPROM is copied into the key after pressing both keys and then powering the unit note 1 Key Function LED Function the compressor is inactive the compressor can no...

Page 74: ...re setting Use the u and d keys to adjust the water temperature If start stop set up and cool heat set up then to local H7 0 local H6 0 press c for 5 seconds start stop in cooling mode Always stop the...

Page 75: ...unit on the following happens Stage Description 1 The o LED starts blinking indicating that the initialization cycle is started The c LED or the h LED lights up indicating whether cooling or heating m...

Page 76: ...case of an alarm refer to What to do in the event of an alarm on page 3 11 Alarm Warning Function Protects the unit Gives additional service information Description the unit is shut down the buzzer i...

Page 77: ...it values Step value measurement unit C or F user d 0 C 0 or 1 1 cooling temperature set point direct r1 12 0 C 7 0 C to 25 0 C 0 1 C cooling temperature difference direct r2 3 0 C 0 3 C to 19 C 0 1 C...

Page 78: ...ct and user parameters parameters can be displayed but not modified Selecting cooling or heating mode Resetting the timers c9 and cv can be resetted For information about how to change a parameter ref...

Page 79: ...uttons untouched for 1 minute The modifications will not be saved Do you want access to all parameters BEGIN Enter the user password 22 with the u and d keys Press s Select the parameter using the u a...

Page 80: ...The Controller for the EUWA Y5 10HB Z Chillers ESIE98 06A 2 24 Part 2 Functional Description 3 1 2 4 5...

Page 81: ...topics Topic See page 3 2 The EUWA Y15 30HC Z Controller page 2 26 3 3 Start Stop Cool Heat and Temperature Setting page 2 27 3 4 What Happens in Case of an Alarm page 2 28 3 5 Menu Overview page 2 2...

Page 82: ...er there is a previous or next screen An overview is given below Screen detail Each screen contains 4 lines which give information about a setting a description and an entry field The entry fields can...

Page 83: ...ing before the remote start stop is active If the remote start stop is not enabled then the LED f is off How to cool or heat To change from cooling to heating or vice versa press d If cooling operatio...

Page 84: ...al circuits Description All compressors are shut down The red LED inside the g key lights up The buzzer is activated The compressor of the corresponding circuit is shut down The red LED inside the g k...

Page 85: ...of the compressor timers page 2 36 t History direct Screen 1 To read the unit safety information after a shutdown page 2 37 Screen 2 To read the safety information of circuit 1 after a shutdown page...

Page 86: ...nu key Does the controller prompt you to give the password Enter the password using the h key Refer to page 2 41 Press the j key Select the desired screen using the h key Do you want to adjust a param...

Page 87: ...ctual inlet water temperature 3 AMBIENT actual ambient temperature 4 THERM STEP actual thermostat step Line n Display Description 1 OUTLET WATER TEMP screen title 2 4 OUTL WATER 1 2 3 actual outlet wa...

Page 88: ...re is no outlet water control available in these units Selection between set point 1 and 2 You can select set point 1 or 2 by the remote dual set point switch if installed refer Field Wiring on page 1...

Page 89: ...control page 2 33 2 MANUAL SETINGS To adjust and activate manual control mode page 2 33 3 THERM SETINGS To adjust the thermostat settings page 2 34 4 BMS SETTINGS To adjust the BMS settings page 2 34...

Page 90: ...s the ability to assign password protection to the set points menu Line n Display Description Lower limit Upper limit Step Default 1 THERM SETTINGS screen title 2 STEPS number of thermo stat steps 1 3...

Page 91: ...measurement probe To adjust the settings use the programming procedure on page 2 30 Line n Display Description Lower limit Upper limit Step Default 1 SENSOR ACCURACY screen title 2 INLET WATER SENSOR...

Page 92: ...r default 15 s 3 FLOWSTOP Delay timer that starts counting when the water flow through the evaporator stops during normal operation if the water flow has not restarted during the countdown the unit wi...

Page 93: ...eens 2 4 These screens show the circuit history Line n Display Description 1 UNIT HISTORY XXX x the total number of unit shutdowns 2 REVERSE PHASE PROT FLOW HAS STOPPED the unit safety reverse phase p...

Page 94: ...o screens Screen 1 This screen shows the unit information Screen 2 This screen shows extra unit information Line n Display Description 1 UNIT INFORMATION screen title 2 UNITNAME the unit name 3 REFRIG...

Page 95: ...nd the reverse phase protector Screen 5 This screen shows the status of the compressors Line n Display Description 1 DIGITAL INPUTS screen title 2 4 SAFETY 1 2 3 indicates whether a safety of circuit...

Page 96: ...n Display Description and status 1 RELAY OUTPUTS screen title 2 4 LPBYPASS 1 2 3 low pressure bypass switch of circuit 1 2 or 3 active or not active Line n Display Description and status 1 RELAY OUTP...

Page 97: ...al factory password is 1914 To reset a pre defined user password press j and q simultaneously for 5 seconds Screen Using this menu you can change the password How to change the password To change the...

Page 98: ...The Controller for the EUWA Y15 30HC Z Chillers ESIE98 06A 2 42 Part 2 Functional Description 3 1 2 4 5...

Page 99: ...ut signals If the unit is not performing properly first check the input devices then the PCBs and finally the output devices The chapters in this part are arranged according to this sequence What is i...

Page 100: ...ESIE98 06A 3 2 Part 3 Troubleshooting 3 1 3 4 5...

Page 101: ...heck the inputs and outputs In this chapter an overview is given The PCB for the chiller types EUWA Y5 10HB Z differs from the PCB for the chiller types EUWA Y15 30HC Z Therefore the overview has been...

Page 102: ...sensor R4T X1 B2 GND e2 r6 outlet water temperature sensor R5T X1 B3 GND e3 r8 coil temperature sensor digital input transducer R1P X1 ALL h1 fl reverse phase protector S11L S10L X1 ID1 GND h1 flow sw...

Page 103: ...4 switch for remote cool heat selection S8S field contacts J3 ID9 switch for dual set point S9S field contacts J3 ID10 switch for remote start stop S10L field contact J4 ID5 flow switch S11L field con...

Page 104: ...uit Control on page 2 9 Type Detail Wiring diagram symbol Wiring connection terminal Description analog input sensor R11T S13DF CN1 sensor for coil temperature measurement circuit 1 R12T S13DF CN2 sen...

Page 105: ...duction In the first stage of the troubleshooting sequence it is important to interpret the fault indication on the controller display This will help you to find the cause of the problem Overview This...

Page 106: ...EEPROM on the controller PCB inside the unit is defective alarm automatic page 1 30 fl No water flow either during the period of 15 seconds after the pump was started or for 5 seconds while the compr...

Page 107: ...m The buzzer stops 2 Find the cause of the alarm and correct it The system is repaired 3 Reset the alarm manually by pressing the u and d key simultaneously for approximately 5 seconds The controller...

Page 108: ...individual circuits Description all compressors are shut down the red LED inside the g key lights up the buzzer is activated the compressor of the corresponding circuit is shut down the red LED inside...

Page 109: ...s of a circuit are connected in series 2 Press the j key if you want to consult the opera tion parameters The following screen is displayed TEMPERATURE LIMITS OUTL WATER INLET WATER AMB TEMP After 20...

Page 110: ...ct faze sequence switch power back on R1P K4A contact on off high pressure switch h1 safety 1 2 3 active discharge pres sure 28 bar manual software reset S1PH S2PH S3PH switch on off contact leaving e...

Page 111: ...This Chapter Introduction In this chapter you will find information on how to measure and check the most important inputs Overview This chapter covers the following topics Topic See page 3 2 Checking...

Page 112: ...R5T R6T sensors connected to the defrost PCB R11T R12T R21T R22T R31T R32T How to check To check the temperature sensors proceed as follows Table 1 In table 1 you will find the temperature resistance...

Page 113: ...1 92 1 87 1 82 29 109 30 105 70 102 20 22 11 32 11 20 11 07 77 1 86 1 81 1 78 28 103 80 100 40 97 16 23 10 90 10 78 10 60 78 1 81 1 76 1 71 27 98 63 95 47 92 41 24 10 49 10 38 10 27 79 1 76 1 71 1 68...

Page 114: ...0 111 99 108 96 25 20 00 19 56 60 4 96 4 87 9 106 03 103 18 26 19 14 18 73 61 4 97 4 70 8 100 41 97 73 27 18 32 17 93 62 4 62 4 54 7 95 14 92 61 28 17 54 17 17 63 4 46 4 38 6 90 17 87 79 29 16 80 16 4...

Page 115: ...it of the unit If however the latter is the case then you should measure the relevant signals using the schematic input route shown above Output route The output is generated from the PCB If a device...

Page 116: ...it Wiring code Type voltage Fuse code main supply L1 L2 L3 M 3 phases 200 V AC F1U F2U F3U control circuit fans relays L2 M 1 phase 230 V AC F7B control circuit pcb s TR1 prim 1 phase 230 V AC F5B TR1...

Page 117: ...trical circuit repair are explained Not all repair procedures are described Some procedures are considered common practice Overview This chapter covers the following topics Topic See page 4 2 Items to...

Page 118: ...rrect if set up incorrectly Check the field wiring in case of remote control One of the timers is still active Check the timers overview in this manual or in the controller and wait until all timers h...

Page 119: ...n outdoor air temperature 43 C leaving condenser water 25 C state of the condenser clean Flow switch or pump contact damaged flow switch incorrect pump operation incorrect field wiring defective contr...

Page 120: ...ll relevant European and national regulations Step Action 1 Recover the refrigerant from the unit It is strictly forbidden to release refrigerant into the atmosphere during service or repair jobs 2 Pe...

Page 121: ...hod 1 To unlock the keyboard proceed as follows Unlock the keyboard method 2 A second method to unlock the keyboard is shown in the table below When the unit is the unit stays off off on on Step Actio...

Page 122: ...e same way as the old controller 4 Reconnect the controller Step Action Result 1 Put on the power supply Make sure that the unit is not working in cooling or heating mode If so press h to switch the u...

Page 123: ...for cooling speed factory 35 17 0 F6 max temp for cooling speed factory 45 19 2 F7 min temp for heating speed factory 35 50 F8 max temp for heating speed factory 30 48 FA temp necessary to turn off th...

Page 124: ...factory 0 0 7 offset for 2 factory 0 0 8 offset for 3 factory 0 0 b digital filter factory 4 4 c input limitation factory 8 8 d measurement unit user 0 0 r1 cooling set point direct 12 12 r2 cooling...

Page 125: ...0 1 PA low pressure alarm when the compressor is OFF factory 0 0 Pb high temperature alarm set user 90 90 PC high temperature alarm delayed at start up user 30 30 H5 pump functional logic factory 1 1...

Page 126: ...nections of the old PCB 2 Remove the old PCB 3 Place the new PCB in the same way as the old PCB 4 Reconnect the PCB Step Action Result 1 Put on the power supply After a few seconds the user terminal w...

Page 127: ...EUWA15 1 Use h to select the correct type 2 Press j 2 MANUFACT NR manufacturing number 0000000 1 Use h and j to change the digits 2 Press j 3 REFRIGERANT refrigerant type R 134a 1 Use h to select the...

Page 128: ...ture shows how to set the dipswitch on the back of the controller for EUWA Y5 10HB Z Setting of dipswitch for EUWA Y15 30HC Z The following picture shows how to set the dipswitch on the back of the co...

Page 129: ...ube to the compressor tube to the inside coil tube to the outside coil left pilot back capillary tube right pilot back capillary tube coil bleed hole compressor piston needle pilot body piston body Di...

Page 130: ...the solenoid to loosen the dirt 4 If unsuccessful remove the valve and wash it out Check on air before reinstalling If there is still no movement replace the valve add a new strainer to the discharge...

Page 131: ...shift replace the valve There is body damage Replace the valve Hot Warm Warm Hot Hot Hot Both parts of pilot are still open To resolve 1 Raise the head pressure 2 Operate the solenoid to free the part...

Page 132: ...Hot Cool Hot as in column 1 Cool as in column 1 Hot Temperature of valve body There is dirt in one bleed hole To resolve 1 Raise the head pressure 2 Operate the solenoid 3 If unsuccessful remove the...

Page 133: ...Cool as in column 1 Temperature of valve body Warmer than valve body At the end of the slide the piston needle is leaking To resolve 1 Operate the valve several times 2 Recheck 3 If there is an exces...

Page 134: ...Troubleshooting ESIE98 06A 3 36 Part 3 Troubleshooting 3 1 3 4 5...

Page 135: ...This part offers a systematic approach to test run checks and test value which will guarantee a high quality installation and operation of the units It is therefore recommended to read the chapters in...

Page 136: ...ESIE98 06A 4 2 Part 4 Commissioning and Test Run 3 1 4 5...

Page 137: ...What Is in This Chapter Introduction As shown in the table below we have grouped the pre test run checks into three main groups to facilitate the servicing Overview This chapter covers the following t...

Page 138: ...y for the condensed water Only for EUWY5 30HB C 6 it is necessary to place a heatertape inside the drain system to prevent ice accumulation and possible drain blockage during wintertime 7 no metal dus...

Page 139: ...d 5 measurement points for temperature and pressure are available on the water circuit 6 the flow switch and pump are properly working 7 air purge points are installed on the high parts of the water p...

Page 140: ...Cw water 4186 J kgK Water quality In the table below you will find the required water quality specifications 0 5 x Q x t V m 2 x x d x Cw Evaporator water Heated water low temperature Tendency if out...

Page 141: ...viates less than 10 from the nominal value 3 the flow switch and pump contact are properly wired up 4 the optional wiring for pump control is installed 5 the optional wiring for remote start stop is i...

Page 142: ...Pre Test Run Checks ESIE98 06A 4 8 Part 4 Commissioning and Test Run 3 1 4 5...

Page 143: ...t Value Suction pressure Cooling 4 8 5 bar Heating 1 5 bar Discharge pressure Cooling 7 22 bar Heating 15 24 bar Maximum water pressure 10 bar Measurement Value Leaving water temperature Cooling 4 20...

Page 144: ...3 1 4 4 5 Currents Unit Nominal current Maximum current Fuses EUWA Y5HB 8 A 12 5 A 3x20 aM EUWA Y8HB 13 2 A 21 5 A 3x25 aM EUWA Y10HB 16 A 24 5 A 3x32 aM EUWA Y15HC 23 A 36 A 3x40 aM EUWA Y20HC 31 A 4...

Page 145: ...duct an inspection to make sure that there is no air mixed in the water pipes Even if air is removed at the beginning air can sometimes enter later Therefore bleed the system regularly Check the tight...

Page 146: ...ESIE98 06A 5 2 Part 5 Maintenance 3 1 5 4...

Page 147: ...arameters k 2 23 change parameters k 2 30 change password k 2 41 changing of PCB k 3 24 changing of PCB k 3 28 checking digital inputs outputs k 3 17 inputs outputs k 3 13 power supply and fuses k 3 1...

Page 148: ...2 29 2 32 step difference k 2 11 timers k 2 29 2 36 user settings k 2 29 2 33 controller EUWA Y5 10H Z k 2 15 controller EUWY A15 30H Z k 2 25 cool heat k 2 18 cool heat k 2 27 cooling set point k 2 3...

Page 149: ...ure control k 2 12 head pressure control k 2 13 heating set point k 2 21 heating set point k 2 32 heating temperature difference k 2 21 high pressure service port k 1 24 1 27 high pressure switch k 1...

Page 150: ...temperature k 2 21 outlook drawing k 1 13 overview of inputs outputs k 3 3 P parameters access k 2 21 how to change k 2 23 how to change k 2 30 how to read k 2 23 how to read k 2 30 overview k 2 21 pa...

Page 151: ...k 1 27 refrigeration circuit k 1 22 1 24 1 25 remote control cool heat k 2 21 cool heat k 2 33 start stop k 2 21 start stop k 2 33 remote control k 2 33 remote control k 2 21 remote dual set point sw...

Page 152: ...settings k 2 11 2 34 stepdifference k 2 11 2 34 steps k 2 11 2 34 STPL k 2 11 2 34 thermostat control k 2 11 thermostat for liquid injection valve k 1 27 thermostat parameters k 2 11 2 34 time delay...

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