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HYBRID-SERVICE MANUAL.book

1. 3 2 Technical Specifications Casing Colour Ivory white Material lt Polyester painted galvanised steel gt Dimensions Packing Height mm 797 Width mm 990 Depth mm 390 Unit Height mm 735 Width mm 832 Depth mm 307 Weight Machine weight ERLQ004 kg 54 56 ERLQOO6 amp ERLQO008 Gross weight ERLQ004 ERLQ006 kg 57 59 amp ERLQO08 Packing Material EPS CARTON Weight kg 3 Heat exchanger Specifications Length mm 845 N of rows 2 Fin pitch mm 1 8 N of stages 32 Tube type lt Hi Xa 8 gt Fin Type WF fin Treatment Anti corrosion treatment PE gt Fan Type Propeller Quantity 1 Air flow rate nom Heating m min 45 47 47 Cooling m min 52 5 52 5 52 5 Discharge direction lt Horizontal gt Motor Quantity 1 Output W 53 Compressor Quantity 1 Motor Model 2YC36BXD C 2YC45DXD C 2YC45DXD C Type lt Hermetically sealed swing compressor gt 47 Part 2 Specifications Outdoor Unit ESIE13 02 Operation Heating heat Min CDB 25 1 um ee ab Max CDB 25 Cooling Min CWB 10 Max CWB 43 Sound level Heating heat Sound power dBA 61 61 62 nominal pump 4 6 8 Sound pressure dBA 48 1 48 49 416 8 2 Cooling Sound power dBA 63 63 63 Sound p
2. Temperature differential discharge temperature suction temperature Service work required Part 4 Troubleshooting 54 ESIE13 02 Troubleshooting 1 2 Overview of General Problems General guidelines General symptoms Error codes Before starting the troubleshooting procedure carry out a thorough visual inspection of the unit and look for obvious defects such as loose connections or defective wiring Before contacting your local Daikin dealer read this chapter carefully it will save you time and money Warning When carrying out an inspection on the switch box of the unit always make sure that the main switch of the unit is switched off When a safety device was activated stop the unit and find out why the safety device was activated before resetting it Under no circumstances safety devices may be bridged or changed to a value other than the factory setting If the cause of the problem cannot be found call your local Daikin dealer If the pressure relief valve is not working correctly and is to be replaced always reconnect the flexible hose attached to the pressure relief valve to avoid water dripping out of the unit Equipment Condition Remedy 1 2 1 Equipment does not Operate See page 56 1 2 2 Indoor Pump Operates but Compressor does not See page 57 1 2 3 Cooling Heating Operation Starts but Stops
3. Graphs Outdoor unit PC board A1P 5V X17A d Red 1 5 7 GND Microcomputer 7 2 White E input n T 2 Measure voltage here V2809 T Q mal n 9 o 9 o a 0 5 050 05 1 15 2 25 3 35 4 V Output voltage V 0 57 0 28 PL detected pressure Mpa V output voltage V Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 123 Part 4 Troubleshooting Error Codes Outdoor Units ESIE13 02 4 11 LY Faulty Outdoor PC Board Remote controller display Method of malfunction detection Malfunction decision conditions Supposed causes E Detect malfunctions by current value during waveform output before compressor startup Detect malfunctions by current sensor value during synchronized operation at the time of startup Detect malfunctions using an MP PAM series capacitor overvoltage sensor When over current is detected at the time of waveform output before operating the compressor When the current sensor malfunctions during synchronized operation When overvoltage occurs in MP PAM In case of IGBT malfunction In case of faulty jumper setting Faulty outdoor PC board A1P m IPM failure m Current sensor failure MP PAM failure m Failure of IGBT or drive circuit Part 4 Troubleshooti
4. 81 Part 4 Troubleshooting Troubleshooting ESIE13 02 1 6 3 System Malfunction Overview Remote Contents of Malfunction Details of Controller Malfunction Display Reference Page UG Gas shortage 139 Uc Abnormal power supply voltage 141 us Underfloor heating screed dry out error 143 Transmission error between hydro box and outdoor unit 144 or ur UF Malfunction of transmission between hydro box and outdoor 146 unit or gas shortage uS Transmission error between hydro box and user interface 148 UA Incorrect hydro box connected to this system or unit type 149 connection not confirmed Note 1 Possibility of open phase power supply Part 4 Troubleshooting 82 ESIE13 02 Troubleshooting 1 7 Overview of the Outdoor Safety Devices High pressure switch ERLQ CA Fuse Open Close ERHQ011 016BA 4 0 MPa 0 0 15 3 0 0 15 6 3A 250V 4 17 MPa 0 0 15 3 2 0 15 6 3A 250V 83 Part 4 Troubleshooting Troubleshooting ESIE13 02 1 8 Overview of the Hydro box Safety Devices Hydro box Protector Cut out condition Reference EVLQXXCAV3 Clixon 85 0 6 C 4P312728 F1T Thermal fuse 134 C 3 2 AD120151 B1L004 Min 5l min in hp operation If AD120120 BUH min 12l min
5. 92 Heat pump part Gas boiler part Unit power supply 230V earth 3 core For more details check unit wiring diagram 33 Part 1 System Outline Wiring Diagrams ESIE13 02 3 2 Overview Switch Box Part number Description A4P Digital PCB receiver PCB wireless ON OFF thermostat power circuit optional A8P Demand PCB optional TR1 TR2 Power supply transformer A1P Main PCB hydro X Y Connector X M Terminal strip The next two figures PCB part 1 and PCB part 2 show the wiring diagram of the hybrid PCB The different components are mentioned either on PCB part 1 or on PCB part 2 The legend that is attached mentions the description of each part number and can help to understand these two figures Some additional information on the PCB figures m The contacts S1S S2S and S3S shown on PCB PART 1 fulfil the following functions m 515 Preferential kWh rate can force the outdoor heat pump to switch off m 525 Electric power meter pulse input for the purpose of energy metering m 535 Gas meter pulse input for the purpose of energy metering m The user interface A2P see drawing PCB PART 1 is delivered as an accessory within the unit The connection diagram see further shows how to connect it to the PCB Part 1 System Outline 34 iagrams D iring ESIE13 02 uondo god 104 juo
6. Part 4 Troubleshooting 138 ESIE13 02 Error Codes System Malfunctions 5 Error Codes System Malfunctions 5 1 UU Gas Shortage Malfunction Remote controller display Method of malfunction detection Malfunction decision conditions Supposed causes c In cooling operation Detection based on difference in temperature between temperature preset by remote controller and indoor suction air temperature motorized valve opening degree compressor frequency and low pressure In heating operation Detection based on difference in temperature between temperature preset by remote controller and indoor suction air temperature motorized valve opening degree during the control of suction air superheating high pressure indoor heat exchanger temperature and indoor suction air temperature In cooling operation When compressor frequency does not increase even though the load is heavy because the motorized valve is opened to the fullest extent If low pressure drops when the compressor is at 41Hz malfunction is confirmed In heating operation When suction gas superheat degree is large compressor frequency is low and the motorized valve is opened to the fullest extent even though heating load is heavy If high pressure is lower than saturated pressure for indoor heat exchanger temperature or indoor suction air temperature malfunction is confirmed m Refrigerant shortage out of gas
7. 151 6 3 Check No 3 Checking the 152 6 4 Check No 4 Resistance Conversion Table Ambient Coil Fin 153 6 5 Check No 5 Resistance Conversion Table Discharge Pipe Sensor 155 6 6 Check No 6 Evaluation of Abnormal High 156 6 7 Check No 7 Evaluation of Abnormal Low 157 6 8 Check No 8 Clogged Points seen 158 6 9 Check No 10 Outdoor Unit Fan Speed 159 6 10 Check No 11 Outdoor Unit Check for Power 160 6 11 Check No 13 Check for Inadequate 161 6 12 Check No 14 Check for Excessive Refrigerant Charging 162 6 13 Check No 15 Check for Factors Causing Wet Operation 163 6 14 Check No 16 Troubleshooting Yonos Para Inverter Pump Only for EH VB004 ac tenet etie 164 Table of Contents 4 ESIE13 02 Part 5 Repair 1 Tips and Tricks Part 6 Maintenance 1 Maintenance Schedule 1 1 Maintenance 5 Table of Contents Introduction ESIE13 02 1 Introduction 1 1 About This Manual Target group This service manual is intended for and should only be used by qualified engineers Purpo
8. GND 5 gt NC 6 NC 7 250 350 during operation 52679 159 Part 4 Troubleshooting Additional Checks for Troubleshooting ESIE13 02 6 10 Check No 11 Outdoor Unit Check for Power Transistor Judgment according to the continuity check by using an analog tester 1 Do not touch the charged area high voltage for 10 minutes after turning the power supply off 2 Ifyou must touch such an area make sure that the power supply voltage of power transistor is 50 V or less 3 Disconnect the connector of the outdoor unit fan motor When the outdoor unit fan is rotating against a strong wind the condenser is charged and electric shock may result Therefore disconnect the connector from the outdoor unit fan motor after con firming that the outdoor unit fan has stopped 4 Before measuring the continuity disconnect the connection between compressor and power transistor 5 Measure the continuity in the following procedure Judgment Normal if the continuity check results in the following Power transistor on inverter PC board gt C17 G OLAH OQ e fo e fo P U Continuity U P P V Continuity pP P eo P W Continuity Ww P eo U P P U Continuity V P V Continuity W Continuity 82678 If there is continuity the resistance should be the same as each phase If a digital tester is
9. Malfunction of the domestic hot water tank thermistor R5T Incorrect parameters on the solar pump station Check N 04 Thermistor resistance check Eton No Replace the thermistor Yes Solar panels are connected to the tank via EKSOLHWAV1 No Replace the applicable relay Yes Maximum tank temperature set point via the solar pump station thermistor is correct 1 Adapt the maximum tank set point No via the solar pump station to the correct value 1 Yes Replace the hydro box PCB A1P Confirm the maximum allowed tank temperature via solar panels in the installation manual of EKSOLHWAV1 101 Part 4 Troubleshooting Error Codes Hydro box ESIE13 02 3 7 Warning Tank Disinfection Function Not Completed Correctly Remote controller AH warning display Method of The malfunction is detected by thermistor and timer check malfunction detection Malfunction The error is generated when disinfection function is not completed correctly Either tank temperature decision conditions for disinfection A 4 4 4 is not reached or temperature is not kept for required time A 4 4 5 Supposed causes m Disinfection function was interrupted by DHW tapping m Large DHW tapping happened recent before the programmed start up of disinfection m BSH is restricted during disinfection Troubleshooting Are any of the above supposed causes ha
10. aod Aq payddns i uonoejep 21 19 jesn JO Joopul uondo 1osues jueiquie 9G y Z VNVS8X yue JOY jue amp jsul 10 juo H E PT ue MEX 518 3oejuoo Sd eje1 YMY renue1ejeid add Aq eeyo uonoejep esind 2 AS andu esind seg q perddns uonoejep esind A S andu esind add Aq peiddns uomoejep OQ A 9L andino 440 00 indino H eoeds 30 AS Vu oZ OVAOSZ VEO 9 i i uondo yue 104 104 juo Part 1 System Outline 35 ESIE13 02 iagrams D iring snonuguoo v OV A 02 usu v z indino MHA SEW r 573 uondo yue 104 10 Auo 1895 adh TIN jjo jnus p adh i ON o BZN 9 1 ON 1 Isvelx 9 9
11. 9 The compressor s magnetic switch s Runs YES contact is defective 10 The compressor is broken Normal Is the remote Set the remote controller s operation 11 Thermostat is broken The pump games controller s temperature Doesn t run lamp blinking 12 The cool heat selector is broken On Our me setting to Machines equipped with 4 13 The operation switch is broken compressor wireless remote 14 The compressor s magnetic swich is doesn t run ow controllers only broken en heating Maximum 15 Over charged with refrigerant Ask for the character 16 Air is mixed inside the refrigerant code of the malfunction circuit code 17 The pressure switch is broken 18 The outdoor unit fan motor s YES magnetic switch is broken 19 The outdoor unit fan motor s 3 auxiliary relay is broken Is the remote NO Cooling 20 The outdoor unit s heat exchanger Cooling starts but B 3 gt is dirty controller s operation A stops right away lamp blinking 21 hors is someting blocking the 22 Malfunction of the outdoor unit s fan Heating gt 23 flow error Nomal Did you allow 3 minutes to YES 24 Overcurrent relay for compressor The unit won t run Try turning t
12. Part number Description A1P Main PCB hydro A2P User interface PCB A3P 3 ON OFF thermostat A3P Heat pump convector A3P Solar pumpstation PCB A4P 2 Digital PCB A4P Receiver wireless ON OFF thermostat power circuit A8P i Demand PCB BiL Flow sensor 051 Dipswitch F1U F2U A Fuse 5 A 250 V for digital I O PCB A4P FU1 Fuse T 6 3 A 250 V for main PCB A1P K R Relay on PCB M1P Main water supply pump M2P Domestic hot water pump M2S 2 way valve for cooling mode M3S 3 way valve for floor heating domestic hot water tank M4S Bypass valve gas boiler PHC1 5 Optocoupler input circuit PS Switching power supply Q DI Earth leakage circuit breaker R1T A1P Outlet water heat exchanger thermistor R1T A2P Ambient sensor user interface R1T A3P 5 Ambient sensor ON OFF thermostat R2T A1P Outlet gas boiler thermistor R2T A4P External sensor floor or ambient R3T A1P Refrigerant liquid side thermistor A1P Inlet water thermistor R5T A1P B Domestic hot water thermistor R6T A1P 7 External indoor or outdoor ambient thermistor R1H A3P d Humidity sensor 515 Preferential kWh rate PS contact 525 Electrical meter pulse input 535 Gas meter pulse input 565 595 Digital power limitation inputs SS1 A4P Selector switch TR1 TR2 Power supply transformer Terminal strip X Y Connector optional field supply 37 Part 1 System Outline ESIE13 02 iagrams D
13. coil resistance criteria 1 Electronic expansion valve and connector No X21A 2 Electronic expansion valve connector and 3 For thermistor temperature and resistance characteristics see Check 4 5 4 For voltage characteristics of the pressure sensor see the right figure P 1 38V 0 69 P Detected pressure MPa V Output voltage Detected pressure PH MPa 0 5 gt Itis believed that factors noise etc other than failure caused the malfunction Orange Measurement spot Criteria Red 2 1 5 40 500 2 5 40 500 Yellow 3 CE A 3 5 40 500 Blac 4 4 4 5 40 500 Gray 5 35 White 6 30r 25 20r 0 5 i 05 0 05 m Check No 4 Resistance Conversion Table Ambient Coil Fin on page 153 m Check No 5 Resistance Conversion Table Discharge Pipe Sensor on page 155 m Check No 13 Check for Inadequate Refrigerant on page 161 m Check No 14 Check for Excessive Refrigerant Charging on page 162 m Check No 15 Check for Factors Causing Wet Operation on page 163 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 4 Troubleshooting 116 ESIE13 02 Error Codes Outdoor Units 4 7 Malfunctioning in Discharge Pipe Temperature Remote controller d
14. NO Procedure completed Model E 01 value EHB VH X004CA 0 EHB VH X008CA 0 EHB VH X016CA 1 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 149 Part 4 Troubleshooting Additional Checks for Troubleshooting ESIE13 02 6 Additional Checks for Troubleshooting 6 1 Check No 1 Outdoor Unit Checking the Installation Condition Check No 01 1 To check the installation condition proceed as follows Check the spaces for all air passage around the suction and discharge areas Is the Ro Change the minimum space respected installation location Yes Does the discharged air from Is the Clean the heat other outdoor units cause an No heat exchanger No gt exchanger increase of the suction clean temperature Yes Yes Change the installation location there enough Change the air flow No _ installation location or direction Yes Check the outdoor ambient temperature R1T This temperature must be lower than 43 C Part 4 Troubleshooting 150 ESIE13 02 Additional Checks for Troubleshooting 6 2 Check No 2 Outdoor Unit Checking the Expansion Valve Checking To check the electronic expansion valve proceed as follows Step Action 1 Check if the expansion valve connector is correctly inserted in the
15. ena v VNSCX 8C WeX 0 16 8 Wex SEV NWZX LINN 1 yun yun 10 Adds Jamod ayes uw Jeuuou asp Ajddns samod ayes A euoz 1M7 Queique JO Josues dwndyeoH if dev Quaque JO Josues xe duindjeay 440 uO 55 AJUO 028 HiH t iod LINN axes uma eon S wooaino OV AOEZ zHos NL N 7 i 10 p d e e em uri LYVd 36 Part 1 System Outline ESIE13 02 Wiring Diagrams For the description of each part number refer to the table below note that the options that go together with the hybrid are the same options as those for Altherma LT
16. B1L008 016 Min 11 in hp operation AD120120 If 3V BUH min 12l min If 9W min 15l min Tank Protector Clixon Cut out condition Reference EKSWW Q2L 85 C 4SW03476 1 EKSWWU Q2L 85 C 4SW03476 1 Q3L 85 C 3 C EKHWS V3 Q2L 85 C 4SW05637 1 Q3L 85 C 3 C EKHWS Z2 Q2L 91 4SW05637 2 Q3L 85 C 4SW05637 1 EKHWSU V3 Q2L 85 C 4SW05637 3 Q3L 85 C 3 C EKHWE V3 Q2L 89 C 0 8 C 4SW05724 1 EKWE Z2 Q2L 89 C 0 8 C 4SW05724 1 Q3L 89 C 0 8 C EHV CA No clixon on tank since no BSH in tank Only relevant clixon is clixon from BUH Part 4 Troubleshooting 84 ESIE13 02 Error Codes Gas Condensing Boiler 2 Error Codes Gas Condensing Boiler 2 1 General Guidelines Before starting the troubleshooting procedure carry out a thorough visual inspection of the unit and look for obvious defects such as loose connections or defective wiring Warning m When carrying out an inspection on the switch box of the unit always make sure that the unit is disconnected from the mains Turn off the respective circuit breaker m When safety device was activated stop the unit and find out why the safety device was activated before resetting it NEVER bridge safety devices or change their values to a value other than the factory default setting If you are unable to find the cause of the problem call your dealer Danger RISK OF ELECTROCUTION Warning Prevent haz
17. Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 4 Troubleshooting 136 ESIE13 02 Error Codes Outdoor Units Pu 4 18 Remote controller display Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Caution Malfunction of Radiator Fin Temperature Thermistor Detection by open or short circuit of the radiator fin temperature thermistor during the compressor stops operating When open or short circuit of the radiator fin temperature thermistor is detected during the compressor stops operating m Faulty radiator fin temperature thermistor m Faulty outdoor unit PC board Check LED on the outdoor unit PC board Does the radiator fin temperature thermistor malfunction Probe other factors than the malfunction Disconnect the connector from X111A on inverter PC board then check the thermistor resistance at the ordinary temperature Replace the inverter PC board A2P ERHQ W1 ERLQ W1 Replace the outdoor PC board A1P ERHQ V3 ERLQ V3 15 reset possible Replace the outdoor PC board ERHQ V3 ERLQ V3 Replace the inverter PC board A2P ERHQ W1 ERLQ W1 Reset See also Check No 4 Resistance Conversion Table Ambient Coil Fin on page 153 Be sure to t
18. Part 3 Commissioning 52 ESIE13 02 Part 4 Troubleshooting What is inthis part This part contains the following chapters Chapter See page 1 Troubleshooting 54 2 Error Codes Gas Condensing Boiler 85 3 Error Codes Hydro box 94 4 Error Codes Outdoor Units 103 5 Error Codes System Malfunctions 139 6 Additional Checks for Troubleshooting 150 53 Part 4 Troubleshooting Troubleshooting ESIE13 02 1 Troubleshooting 1 1 General Troubleshooting Flowchart Wait until Turn the power supply Troubleshooting by Refer to Remote controller display power failure switch ON or replace remote controller E malfunction code and contents is over the fuse malfunction code 1 The operation circuit fuse is disconnected or is making poor contact YES YES YES 2 is broken or its Is there a NO The power supply switch is NO Is the remote NO 8 The high pressure Switch is broken Doesn t run at all m power Y OFF or the switch s fuse is controller s operation 4 The fan motor s magnetic switch is failure burnt lamp blinking broken 5 The fan motor s overcurrent relay is being actuated or is broken 6 The compressor s overcurrent relay is broken 7 The compressor s protective Troubleshooting by thermostat is broken remote controller 8 The electrical system insulation is malfunction code defective
19. Possible causes Solution The house pressure switch may be Gas supply pressure too low Yes gt faulty Contact the gas company No 4j Recirculation of combustion gasses No Gas air adjustment not correctly set Yes m Check the gas flue and the air supply Check the setting See gas air adjust Yes gt ment i Part 4 Troubleshooting 90 ESIE13 02 Error Codes Gas Condensing Boiler 2 44 No heating CH Possible causes Room thermostat weather dependent adjustment not closed or faulty Yos gt Nog No current 24 V Pump not running No 4j Burner not firing on CH sensor S1 or S2 faulty No i Burner does not ignite Yes gt Yes gt Replace sensor S1 or S2 See fault s gt code temperature display 1 or 2 p Yi Yes Solution Check the wiring Replace the thermo stat Replace the weather dependant adjustment Check the wiring against the diagram Check the connector X4 Replace the faulty manager Check the power supply Check con nector X2 Replace faulty pump Replace faulty manager See burner does not ignite 2 4 5 Symptom No space heating Possible causes Corrective action Heat pump error Check the user interface Communication problem with the heat pump Make sure the communication cable is properly installed Incorrect heat pump settings Check the settings in the h
20. Troubleshooting 80 ESIE13 02 Troubleshooting 1 6 2 Outdoor Unit Malfunction Overview Remote Contents of Malfunction Details of Controller Malfunction Display Reference Page ET Outdoor unit PC board malfunction 103 E3 Abnormality of high pressure HPS 104 EH Abnormality of low pressure outdoor 106 ES Compressor motor lock malfunction 109 ET Malfunction of outdoor unit fan motor 111 ES Malfunction of Electronic expansion valve 114 F3 Discharge pipe temperature malfunction 117 H3 Faulty high pressure switch HPS 119 H8 Malfunction of outdoor air temperature sensor system 121 ul Malfunction of pressure sensor 122 J3 Malfunction of discharge pipe temperature sensor system 121 JS Suction pipe thermistor malfunction 121 J6 Malfunction of heat exchanger temperature sensor system 121 di Malfunction of subcooling heat exchanger temperature sensor 121 system outdoor unit J8 Malfunction of liquid pipe thermistor outdoor unit 121 Li Outdoor PC board malfunction 124 LH High temperature of radiation fin 126 L5 Overcurrent of DC output instantaneous 128 L8 Electronic thermal switch time lag 130 L9 Stall prevention time lag 132 LE Malfunction of transmission system between control PCB and 134 inverter PCB Pi Open phase or voltage unbalance 136 PH Malfunction of radiator fin temperature thermistor 137 Pu Error in capacity setting 138
21. 0 8 5 46 0 922 116 0 8 0 48 0 84 9 118 0 7 6 50 0 78 3 120 0 7 1 52 0 722 122 0 6 7 54 0 66 7 124 0 6 4 56 0 61 6 126 0 6 0 58 0 57 0 128 0 5 7 155 Part 4 Troubleshooting Additional Checks for Troubleshooting ESIE13 02 6 6 Check No 6 Evaluation of Abnormal High Pressure Abnormally high pressure level is mostly caused by the condenser side The following contents are provided by service engineer based on their field checks Further the number is listed in the order of degree of influence In cooling operation Check items Possible causes Judgment Does the outdoor unit fan run normally Visual inspection Is the outdoor unit heat exchanger clogged Visual inspection Is there clogging before or after the EV Check if there is a temperature difference capillary before and after EV capillary Check if the main valve unit of EV operates by noise vibration Is the check valve clogged Check if there is a temperature difference before and after check valve Heat pump model only m f YES the check valve is caught Is the HPS normal Check continuity by using a tester Is the outdoor unit installed under such Visual inspection conditions that short circuit easily occurs Is the piping length 5 meters or less Visual inspection Does air enter the refrigerant system Conduct refrigerant collection and vacuum drying and then add pr
22. 4 Troubleshooting 130 ESIE13 02 Error Codes Outdoor Units Troubleshooting Caution Is the secondary current of the inverter higher than A see below for each phase Ne YES Turn the main power supply off and then disconnect the connection between the compressor and inverter Continuity check in the power transistor IGBT Is the continuity normal Is the inverter output voltage generated approximately at the same increasing speed on each phase after turning on again U V V W W U NO gt Compressor overload Inspection of the compressor and refrigerant system is required NO gt Replace the inverter PC board A1P ERHQ V3 ERLQ V3 A2P ERHQ W1 ERLQ W1 When operating compressor with compressor output line disconnected the compressor stops due to malfunction after elapsed time of 5 seconds Therefore check the voltage increase for 5 seconds gt Replace the inverter PC board A1P ERHQ V3 ERLQ V3 A2P ERHQ W1 ERLQ W1 Electronic thermal detection value Compressor inspection Inspect according to the diagnosis procedure for abnormal noises Detection value vibration operating status etc of the compressor Cooling ERHQ011 016 V3 1 5 seconds or 20 1A x 260 seconds Heating Cooling ERHQ011 016 W1 Heating 17A x 5 seconds or 10
23. 4 Resistance Conversion Table Ambient Coil Fin on page 153 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 121 Part 4 Troubleshooting Error Codes Outdoor Units ESIE13 02 4 10 Jl Malfunction of Pressure Sensor Remote controller ui display Method of The malfunction is detected by the pressure measured with pressure sensor S1NPH malfunction detection Malfunction When the defect pressure becomes following decision conditions m Detected pressure lt 0 05MPa continues 185 s m Detected pressure gt 0 05MPa continues 185 s Supposed causes m Faulty pressure sensor m Faulty outdoor unit PC board m Incorrect connection of connector Troubleshooting Check if the connector for the pressure sensor X174 is correctly connected to the outdoor unit PC board A1P Is it connected correctly NO Connect correctly Measure the voltage V between the pins 2 and 3 of the above connector 1 Is the relation between the pressure and the voltage normal 2 YES NO gt Replace the pressure sensor S1NPH gt Replace outdoor unit PC board A1P ERHQ V3 ERLQ V3 Replace the control PC board A1P ERHQ W1 ERLQ W1 Part 4 Troubleshooting 122 ESIE13 02 Error Codes Outdoor Units
24. 6A x 260 seconds 17A x 5 seconds or 12 6A x 260 seconds See also Check No 11 Outdoor Unit Check for Power Transistor on page 160 Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 131 Part 4 Troubleshooting Error Codes Outdoor Units ESIE13 02 4 15 LT Stall Prevention Time Lag Remote controller L9 display Method of m Malfunction is detected by converting the current flowing to power transistor into voltage with CT1 malfunction DC current sensor detection m Inverter PC board detects the disorder of position signal Malfunction When compressor overload except for when startup is detected decision conditions m When position signal is disordered Supposed causes m Faulty compressor lock m Pressure differential startup m Faulty inverter m The stop valve is left in closed Part 4 Troubleshooting 132 ESIE13 02 Error Codes Outdoor Units Troubleshooting Check the installation conditions NO Is the stop valve open gt Open the stop valve Is the difference between high and low pressure before startup not more than 0 2MPa NO gt Insufficient pressure equalization Check refrigerant system YES Turn the main power supply off and then disconnect the connection between the compressor and inverter Continuity check
25. 76 ESIE13 02 Troubleshooting 1 4 1 Remote Controller Display Malfunction Code and Contents Malfunction code Contents Processing Remarks 80 Inlet water temperature thermistor abnormality 81 Outlet water temperature thermistor abnormality 89 Water heat exchanger freeze up abnormality 7H Water flow abnormality 8F Outlet water temperature too high 8H Outlet water temperature too high Booster back up heater thermal protector is open 3 AC Booster heater thermal protector is open 5 Warning tank disinfection function not completed correctly r A1 Hydro box PCB abnormality CJ Room temperature thermistor error co Flow switch abnormality 4 Heat exchanger thermistor abnormality EC Domestic hot water temperature too high HC Domestic hot water temperature thermistor abnormality H1 External temperature sensor error E1 Outdoor unit PC board malfunction High pressure malfunction outdoor unit E4 Abnormality of low pressure outdoor Failure of low pressure sensor system Check if the stop valve is open E5 Compressor motor lock malfunction Compressor motor lock incorrect wiring E7 Outdoor fan motor lock or outdoor fan instantaneous overcurrent malfunction E9 Malfunction of electronic expansion valve outdoor unit F3 Discharge pipe temperature malfunction outdoor unit H3 Failure of high pressure sw
26. Immediately See page 59 1 2 4 After Unit Shuts Down It cannot be Restarted for a While See page 61 1 2 5 Equipment Produces Loud Noise or Shakes See page 63 1 2 6 User Interface Displays Busy See page 65 1 2 7 The Unit is Turned on d LED is lit but the Unitis not Heating See page 66 or Cooling as Expected 1 2 8 The Unit is Turned on but the Compressor is not Starting See page 67 Space Heating or Domestic Heating 1 2 9 Pump is Making Noise Cavitation See page 68 1 2 10 The Water Pressure Relief Valve Opens See page 69 1 2 11 The Water Pressure Relief Valve Leaks See page 70 1 2 12 The User Interface Does Not Display Certain Screens RT See page 71 LWT Tank Ext RT 1 2 13 Domestic Hot Water Capacity Shortage at Low Outdoor Tem See page 72 peratures 1 2 14 Space Heating Capacity Shortage at Low Outdoor Tempera See page 73 tures 1 2 15 Room Temperature Set Point Isn t Reached or Increases Too See page 74 Slow When a safety device is activated the user interface will display the icon on the home screen When pushing the button the error code and a brief description of the error will be shown A short list of all errors and corrective actions can be found in the installer reference guide More detailed information on how to solve these errors can be found in the next pages 55 Part 4 Troubleshooting Troubleshooting ESIE13 02 1 2 1 Equipment does not Operate ERHQO11 0
27. Technical Specifications essse eene 47 3 Commissioning Part 4 Troubleshooting 1 Troubleshooting 1 1 General Troubleshooting Flowchart sss 54 1 2 Overview of General Problems essen 55 1 3 Fault diagnosis by Remote 75 1 4 Fault diagnosis Manual Reset in the 76 1 5 Troubleshooting by LED on the Hydro box PCB 79 1 6 Overview of Error 80 1 7 Overview of the Outdoor Safety Devices 83 1 8 Overview of the Hydro box Safety Devices 84 2 Error Codes Gas Condensing Boiler 2 1 General Guldeliries o nre bet eet 85 2 2 Solving Problems Based on 86 2 3 Solving Problems Based on Error Codes 87 24 Symptomis coe e edet deest eave oe prete Sese quie e 89 3 Error Codes Hydro box 3 1 AY Malfunctioning Hydro box PCB sss 94 3 2 B3 Water Heat Exchanger Frozen sssssssssseeeeeee 95 3 3 Cu CH 81 80 HC HT Thermistor or Related Abnormality Hydro b
28. The heat pump pump and gas boiler are enabled Space heating is enabled Allowable outdoor temperature range 25 to 25 x fe thermal energy kWh C PUMP O 9 5 C Outdoor unit Indoor unit Plate heat exchanger Gas boiler 3 way valve RADIATOR T flow T ambient C 15 C Part 1 System Outline 24 ESIE13 02 Functionality HYBRID MODE 1 heatpump operation 0 boiler operation room temperature gt Time 25 Part 1 System Outline Functionality ESIE13 02 Gas boiler only mode The pump and gas boiler are enabled Space heating is enabled It works alternating depending on the demand of domestic hot water If there is a domestic hot water demand the unit stops serving the heating and turns in domestic hot water mode Allowable outdoor temperature range max 25 AIA a b d e E 9 I J PUMP RADIATOR c a Outdoor unit b Indoor unit Plate heat exchanger d Gas boiler e 3 way valve 60 T flow C thermal energy kWh 5 T ambient 15 C Part 1 System Outline 26 ESIE13 02 Functionality 2 1 2 Domestic Hot Water Domestic hot water The heat pump and the pump are idle the gas
29. boiler is enabled only mode Space heating is disabled It works alternating depending on the demand of domestic hot water a es 0 I k RADIATOR Outdoor unit b Indoor unit Plate heat exchanger d Gas boiler e 3 way valve 27 Part 1 System Outline Functionality ESIE13 02 Domestic hot water Depending on the mode heat pump only hybrid gas boiler only we can generate domestic hot water and space heating and heating as follows mode m During heat pump only operation the heat pump remains operational and the gas boiler is bypassed domestic hot water will be generated by boiler only on demand Both can happen parallel During hybrid operation the system will automatically switch one or both units to ON for heating accordantly to the settings in ecological economical domestic hot water will be generated by boiler only on demand Both can happen parallel m During gas boiler only operation the internal pump is running and the gas boiler will serve heating domestic hot water will be generated by boiler only on demand Only one mode can be in time NIA a a b d e EN P p 9 M PUMP RADIATOR Outdoor unit Indoor unit Plate heat exchanger Gas boiler 3 way Par
30. connections heat exchanger b Spark plug cover C Boiler controller d Earth connections boiler controller e Fuse 3 15 A T f Gas valve and ignition unit g lonisation ignition probe h Main voltage i Fan 51 Flow sensor S2 Return sensor S3 Domestic hot water sensor 55 Flow switch S7 Space heating water pressure sensor X2 1 3 Room thermostat 230 V AC 1 7 Switch live 3 Live fused not used X2 1 3 Frost thermostat 230 V AC 17 Switch live 3 Live fused not used X2 3 6 Power supply 230 V fan X2 2 4 Mains 27 L BRN 4 N BLU S5 Boiler communication cable Part 1 System Outline 32 ESIE13 02 Wiring Diagrams 3 1 2 External connection diagram Power supply Standard parts Notes In case of signal cable keep minimum distance to power cables gt Son 2 kt ly Outdoor unit X1M L N Earth Normal Wh rate power supply for indoor unit 230v Field supply Indoor unit XIMT 23 arf X2M 30 31 X5M 3 4 Optional parte X2M 34 35 NO 2 6 7 NC valve 5 7 X5M 7 8 Remark transitor Bectscty meter puse ad Sra 3 way valve NS CHAP s raed SPST X2M 8 9 10 domestic hot water oor 730 SPOT X2M 8a 9 10 Field supply In case user interface is 2 cre pars relocated ce
31. detection Malfunction decision conditions Supposed causes HPS settings m LL The protection device circuit checks continuity in the high pressure switch When the high pressure switch is actuated Actuating pressure m Faulty high pressure switch m Disconnection in high pressure switch harness m Faulty connection of high pressure switch connector Clogged hydro box suction filter in heating operation m outdoor unit heat exchanger m Faulty outdoor unit fan m Refrigerant overcharge m Stop valve is left in closed The table below contains the preset HPS values High pressure switch Fuse Open Close 4 0 MPa 0 0 15 3 0 0 15 6 3A 250V Part 4 Troubleshooting 104 ESIE13 02 Error Codes Outdoor Units Troubleshooting Check the installation conditions Is the NO stop valve gt Open the stop valve open Are control and protection HPS NO connected to outdoor unit gt Connect correctly PC board Note YES Turn off the power supply Wait for 10 minutes after compressor stops operating then check the following Is there continuity in control and NO Replace HPS with no protection HPS continuity Is high pressure C tthe high abnormally high orrect the high pressure NO Set the remote controller and turn on again Is the YES malfu
32. is generated or DC voltage is not in range of 305 380 VDC for W1 only 300 320 VAC or when the power failure of several tons of ms or longer is generated or DC voltage is not in scope of 508 620 VDC Remote controller does not decide the abnormality Drop in power supply voltage 180 V or less Instantaneous power failure Inverter open phase Phase T Faulty main circuit wiring Faulty outdoor inverter PC board Main circuit parts damaged 141 Part 4 Troubleshooting Error Codes System Malfunctions ESIE13 02 Troubleshooting Check LED on outdoor unit PC board Is the voltage insufficient e power supply voltage between 220 240 10 Is the wiring correct NO NO Other factors When the compressor is running measure the voltage between and of electrolytic capacitor C C Is the measured voltage 220 VDC or more No Field factors YES Correct the wiring Monitor the voltage Instantaneous voltage drop Check the several connections according to wiring diagram m V3 W1 Reactor coil resistance value 0 2 1 ohm gt Replace the outdoor PC board A1P ERHQ V3 ERLQ V3 Replace the inverter PC board A2P ERHQ W1 ERLQ W1 m V3 Capacitor C4 is correctly connected GREY cable is connected at the side of the grey stroke on the capacitor m W1 Confirm
33. items Possible causes Judgment Does the outdoor unit fan run normally Visual inspection Is the hydro box filter clogged Visual inspection Is there clogging before or after the EV capillary Check if there is a temperature difference before and after EV capillary Check if the main valve unit of EV operates by noise vibration Is the check valve clogged Heat pump model only Check if there is a temperature difference before and after check valve m f YES the check valve is caught Is the LPS normal Check continuity using a tester Is the hydro box installed under such conditions that short circuit easily occurs Visual inspection Is the refrigerant gas short Conduct refrigerant collection and vacuum drying and then add proper amount refrigerant Check items Possible causes Judgment Does the outdoor unit fan run normally Visual inspection Is the outdoor unit heat exchanger clogged Visual inspection Is the outdoor unit installed under such conditions that short circuit easily occurs Visual inspection Is there clogging before or after the EV capillary Check if there is a temperature difference before and after EV capillary Check if the main valve unit of EV operates by noise vibration Is the check valve clogged Check if there is a temperature difference before and after check valve m f Y
34. output line disconnected the compressor stops due to malfunction after elapsed time of 5 seconds Therefore check the voltage increase for 5 seconds Check the power supply voltage Is instantaneous voltage drop generated YES gt Correct the power supply 1 Approximate value gt Compressor inspection Inspect according to the diagnosis procedure for abnormal noise Instantaneous overcurrent vibration operating status etc of detection value ERHQO011 016 V3 the compressor 51 7A ERHQ011 016 W1 32 7A See also Check No 11 Outdoor Unit Check for Power Transistor on page 160 Caution occurred Be sure to turn off power switch before connect or disconnect connector or parts damage may be 129 Part 4 Troubleshooting Error Codes Outdoor Units ESIE13 02 4 14 18 DC Output Overcurrent Instantaneous Remote controller LB display Method of Malfunction is detected by converting the current flowing to power transistor into voltage with CT1 malfunction DC current sensor detection m Inverter PC board detects the disorder of position signal Malfunction When compressor overload except for when startup is detected decision conditions Supposed causes m Compressor overload during operation m Disconnected compressor coil m Faulty inverter m Faulty compressor if bearing is scratched Part
35. piping installation complies with applicable legislation In Europe EN378 is the applicable standard NOTICE Make sure the field piping and connections are not subjected to stress WARNING During tests NEVER pressurize the product with a pressure higher than the maxi mum allowable pressure as indicated on the nameplate of the unit gt PSS WARNING Take sufficient precautions in case of refrigerant leakage If refrigerant gas leaks ventilate the area immediately Possible risks m Excessive refrigerant concentrations in a closed room can lead to oxygen deficiency m Toxic gas may be produced if refrigerant gas comes into contact with fire gt WARNING Always recover the refrigerants Do NOT release them directly into the environment Use a vacuum pump to evacuate the installation Only use phosphoric acid deoxidised seamless copper with annealed temper grade 11 Introduction ESIE13 02 1 4 4 Brine 1 4 5 Water If applicable See the installation manual or installer reference guide of your application for more information WARNING WARNING The selection of the brine MUST be in accordance with the applicable legislation Take sufficient precautions in case of brine leakage If brine leaks ventilate the area immediately and contact your local dealer NOTICE Make sure water quality complies with EU directive 98 83 EC Avoid
36. used for the measurement of continuity and continuity may be reversed Part 4 Troubleshooting 160 ESIE13 02 Additional Checks for Troubleshooting 6 11 Check No 13 Check for Inadequate Refrigerant As criteria for judging whether refrigerant is inadequate or not refer to the following operating conditions Diagnosis of inadequate refrigerant In cooling operation 1 2 As suction superheat degree increases due to gas shortage the electronic expansion valve tends to open opens fully in order to avoid overheat operation In response to decreased evaporator capacity caused by gas shortage capacity is controlled in the inverter in order to maintain low pressure which results in a decrease in frequency Because of 1 and 2 above the compressor frequency decreases despite a large difference large load between temperature set by the remote controller and indoor suction temperature resulting that cooling capacity becomes unavailable If gas shortage worsens the electronic expansion valve remains fully open and suction superheat degree further increases In addition because the compressor frequency drops to the level of the lowest frequency 52 Hz and the refrigerant flow rate decrease low pressure cannot be maintained Diagnosis of inadequate refrigerant In heating operation 1 2 As suction superheat degree increases due to gas shortage the electronic expansion valve tends to open
37. wiring WARNING m ONLY use copper wires m Allfield wiring must be performed in accordance with the wiring diagram supplied with the product m NEVER squeeze bundled cables and make sure they do not come in contact with the piping and sharp edges Make sure no external pressure is applied to the terminal connections m Make sure to install earth wiring Do NOT earth the unit to a utility pipe surge absorber or telephone earth Incomplete earth may cause electrical shock m sure to use a dedicated power circuit NEVER use a power supply shared by another appliance m Make sure to install the required fuses or circuit breakers m Make sure to install an earth leakage protector Failure to do so may cause electric shock or fire m When installing the earth leakage protector make sure it is compatible with the inverter resistant to high frequency electric noise to avoid unnecessary opening of the earth leakage protector Install power cables at least 1 meter away from televisions or radios to prevent interference Depending on the radio waves a distance of 1 meter may not be sufficient WARNING After finishing the electrical work confirm that each electrical component and terminal inside the electrical components box is connected securely Make sure all covers are closed before starting up the unit 13 Introduction ESIE13 02 1 4 7 Gas The gas boiler is factory set
38. 0 ESIE13 02 Description 1 2 3 Outdoor unit Item Description Terminal strip with earth terminal Gas stop valve 215 9 Service port Liquid stop valve 26 4 21 Part 1 System Outline Functionality ESIE13 02 2 Functionality 2 1 System Operation 211 Heating Mode Heat pump only The heat pump and pump are enabled the gas boiler is bypassed operation Space heating is enabled Allowable outdoor temperature range 25 to 25 or PUMP RADIATOR Outdoor unit Indoor unit Plate heat exchanger Gas boiler 3 way valve C T_flow thermal energy kWh C 5 C 15 C T ambient Part 1 System Outline 22 ESIE13 02 Functionality Quick heatup HEATPUMP MODE 1 1 I heatpump operation 0 0 ___ LL boiler operation at highest setpoint set in weather dependent or 60 C if fixed heating water temp control gt Time 23 Part 1 System Outline Functionality ESIE13 02 Hybrid operation mode
39. 00 Installation of gas hot water supplies for domestic purposes BS 5549 1990 Forced circulation hot water systems BS 6700 1997 Design Installation testing and maintenance of services supplying hot water BS 6798 2000 Specification for installation of gas fired hot water boilers of rated input NOT exceeding 70 kW BS 6891 1998 Installation of low pressure gas pipe work installation up to 35 mm RI BS 7593 1992 Code of practice for treatment of water in heating systems BS 7671 2001 Requirements for electrical installations IEE Wiring regulations BS7074 1 Code of practice for domestic and hot water supply EN12828 Central heating for domestic premises Potable water all seals joints and compounds including flux and solder and components used as part of the secondary domestic water system MUST be approved by WRAS 15 Introduction ESIE13 02 16 ESIE13 02 Part 1 System Outline What is inthis part This part contains the following chapters Chapter See page 1 Description 18 2 Functionality 22 3 Wiring Diagrams 32 17 Part 1 System Outline Description ESIE13 02 1 Description 1 1 System Build up The system combines a gas condensing boiler and a heat pump hydro box for space heating and domestic hot water Depending on the position of the 3 way valve the gas condensing boiler can either be bypassed or not The heat pump can either opera
40. 10 43 heat pump oper ture ation Space heating C 25 25 heat pump Water tempera Space cooling C 5 22 ture Space heating C 15 55 45 Part 2 Specifications Outdoor Unit ESIE13 02 3 Outdoor Unit 3 1 Nominal Capacity and Nominal Input For combination indoor units and outdoor units Outdoor units EHYRLQO005 EHYRLQ008 EHYRLQOOS Indoor units Indoor H P module EHYHBHO05 EHYHBHOS8 EHYHBX08 Condition 1 Heating Minimum kW 1 80 1 80 1 80 capacity Nominal kW 4 40 7 40 7 40 Maximum kW 5 12 10 02 10 02 Cooling Minimum kW 2 50 capacity Nominal kW 6 86 Heating PI Nominal kW 0 87 1 66 1 66 Cooling PI Nominal kW 2 01 COP Nominal 5 04 4 45 4 45 EER Nominal 3 42 Condition 2 Heating Minimum kW 1 80 1 80 1 80 capacity Nominal kW 4 03 6 89 6 89 Maximum kW 4 90 9 53 9 53 Cooling Minimum kW 2 50 capacity Nominal kW 5 36 Heating PI Nominal kW 1 13 2 01 2 01 Cooling PI Nominal kW 2 34 COP Nominal 3 58 3 42 3 42 EER Nominal 2 29 Notes m Condition 1 Cooling Ta 35 C LWE 18 C DT 5 C Heating Ta DB WB 7 6 LWC 35 C DT 5 C m Condition 2 Cooling Ta 35 C LWE 7 C DT 5 C Heating Ta DB WB 7 C 6 C LWC 45 C DT 5 C Part 2 Specifications 46 ESIE13 02 Outdoor Unit
41. 16 ERLQO004 016 Applicable model Error detection method Error generating condition Supposed causes m Fuse blown or disorder of contact in operation circuit m Faulty operation switch or contact point m Faulty high pressure switch m Faulty magnetic switch for fan motor m Activation or fault of overcurrent relay for fan motor m Faulty overcurrent relay for compressor m Faulty compressor protection thermostat m Insufficient insulation in electric system m Faulty contact point of magnetic switch for compressor m Malfunction of compressor m Defective remote controller Troubleshooting OFF or fuse for power switch Turn on power switch or replace blown fuse If high harmonics circuit breaker is not used on inverter compressor have the circuit breaker replaced Is there power Wait until power returns failure Is operation switch pressed gt Normal repeatedly Equipment starts operation 3 minutes later 3 min standby Operation lamp ori LCD remote controller Diagnose based on error code on NO ashing remote controller Is thermostat changed and YES NO gt Normal reset again Equipment starts operation 3 NO NO minutes later 3 min standby Possibly faulty electric ____ Check electric system component Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 4 Troubleshooting 56 E
42. 344906 1 2013 02 tcm135 29 0349 installation manual 4PEN353731 1B 2013 10 tcm135 304271 field setting table 4PEN349588 1 2013 05 tcm135 29 0399 operation manual Introduction ESIE13 02 1 2 About the Documentation m The original documentation is written in English All other languages are translations m The precautions described in this document cover very important topics follow them carefully m Allactivities described in the installation manual must be performed by an authorized installer 1 2 1 Meaning of warnings and symbols DANGER Indicates a situation that results in death or serious injury DANGER RISK OF ELECTROCUTION Indicates a situation that could result in electrocution DANGER RISK OF BURNING Indicates a situation that could result in burning because of extreme hot or cold tem peratures WARNING Indicates a situation that could result in death or serious injury CAUTION Indicates a situation that could result in minor or moderate injury NOTICE Indicates a situation that could result in equipment or property damage INFORMATION Indicates useful tips or additional information ZS NS DANGER RISK OF EXPLOSION Indicates a situation that could result in explosion DANGER RISK OF POISONING Indicates a situation that could result in poisoning PI WARNING PROTECT A
43. 400pjno 2102 80 PHQ H 38 Part 1 System Outline iagrams D iring uonoes seb ESIE13 02 A9X 949X 196uuoo pue 1oeuuoosip A9X ueu y J E Z LINLX yun Sd N 1 E OL 6 8 ZX IV6X 26 18 WLX pejoeuuoo 2 jeuond o eom 1 28105 1 jo 1 jeuiqeo 9399 5 Part 1 System Outline 39 Wiring Diagrams ESIE13 02 3 4 Piping Diagram Water side Refrigerant side mes S Item Description 1 Space heating water in 2 Space heating water out 3 Shut off valve with drain fill valve field installation 4 Expansion vessel 5 Filter 6 Pump 7 Plate heat exchanger 8 Air purge 9 Flow sensor 10 3 way valve 11 Safety valve 12 Boiler 13 Domestic hot water out 14 Gas connection 15 Cold water in 16 R1T Water OUT PHE 17 R2T Water OUT 18 R3T Liquid 19 Water IN Part 1 System Outline 40 ESIE13 02 Part 2 Specifications What is inthis part This part contains the following chapters Chapter See page 1 Gas Condensing Boiler 42 2 Hydro box 44 3 Outdoor Unit 46 41
44. 96 39 01 50 7 18 7 04 11 38 08 37 18 51 6 91 6 78 12 36 30 35 45 52 6 65 6 53 13 34 62 33 81 53 6 41 6 53 14 33 02 32 25 54 6 65 6 53 15 31 50 30 77 55 6 41 6 29 16 30 06 29 37 56 6 18 6 06 17 28 70 28 05 57 5 95 5 84 18 27 41 26 78 58 5 74 5 43 19 26 18 25 59 59 5 14 5 05 Applicable sensors A Outdoor Ambient Coil Pipe without discharge B Outdoor Fin 153 Part 4 Troubleshooting Additional Checks for Troubleshooting ESIE13 02 N Be careful when ordering spare part sensor for tank thermistor Thermistor Remove the connectors of the thermistors on the PCB and measure the resistance of each thermistor resistance check using tester The tank thermistor is for EKHWS B and EKHWE domestic hot water tanks The relationship between normal temperature and resistance is shown in the graph and the table below Hydro box 3SA48002 R25 C 20kQ B 3990 20 197 8 15 148 2 10 112 0 5 85 52 kO 0 65 84 5 51 05 10 39 91 kO 15 31 44 kO 20 24 95 25 19 94 30 16 04 35 12 99 kO 40 10 58 45 8 669 kO 50 7 143 kO Tank thermistor for EHV CA domestic hot water tanks NTC curve tank thermistor T C Resistance value 20 197 81 KQ 0 65 84 25 20 KQ Part 4 Troubleshooting 154 ESIE13 02 Additional Checks for Troubl
45. DAIKIN ESIE13 02 JN 4 EL Service Manual Hybrid Gas boiler EHYKOMB33AA EHYKOMB33AA Hydro box EHYHBH05AAV3 RHYHBH05AAV3 EHYHBH08AAV3 RHYHBH08AAV3 EHYHBX08AAV3 RHYHBX08AAV3 Outdoor unit EVLQ05CAV3 RVLQO5CA V3 EVLQ08CAV3 RVLQO8CA V3 ESIE13 02 1 Introduction 1 1 About This Manual 2 nitentes Enea eee ue ade 6 1 2 About the Documentation seseeeeene eem eene 8 1 3 lE Buaris 1g ett 9 1 4 For the eeeeum 10 Part 1 System Outline 1 Description System Build t p tance oe E SRL 18 Components and Connections sssssssssssssesseeeeeneneee en 19 2 Functionality 2 1 System eene neret nnne ennt 22 3 Wiring Diagrams 3 1 PGB Description i ee ae 32 3 2 Overview Switch 34 3 3 Cable Ditriensioris 2 1 eter it ete ee Ue eate edis 38 3 4 Piping Diagram ee et ee ever ge e De Ee eer edet 40 Part 2 Specifications 1 Gas Condensing Boiler 1 1 Technical Specifications 42 2 Hydro box 2 1 Technical Specifications 44 Table of Contents ESIE13 02 3 Outdoor Unit 3 1 Nominal Capacity and Nominal Input 46 3 2
46. ES the check valve is caught Is the LPS normal Check continuity using a tester Is the refrigerant gas short Conduct refrigerant collection and vacuum drying and then add proper amount refrigerant 157 Part 4 Troubleshooting Additional Checks for Troubleshooting ESIE13 02 6 8 Check No 8 Clogged Points Temperature differences must occur before or after the clogged points RAC HH HEN Indoor Unit uo UIN enean ec Check points Check factor Causes Remedies 1 Around Temperature m Dust Replace the expansion difference Chsked moisture expansion valve mechanism m Reduced effective pipe diameter due to adherent contamination etc 2 Accumulator Frosting Choked moisture Blow a nitrogen gas and then replace the refrigerant 3 Distributor Temperature m Dust Replace the heat Choked moisture 7 distributor m Reduced effective pipe diameter due to adherent contamination etc 4 Field piping Temperature m Collapsed pipe Replace the pipe difference 5 Stop valve Temperature m The stop valve is not fully Open the stop valve difference open fully Part 4 Troubleshooting 158 ESIE13 02 Additional Checks for Troubleshooting 6 9 Check No 10 Outdoor Un
47. Faulty pressure sensor m Faulty Outdoor control PC board Part 4 Troubleshooting 114 ESIE13 02 Error Codes Outdoor Units Troubleshooting Turn OFF the power supply once and then turn it ON again Does the malfunction code E9 recur Is the electronic expansion valve connector properly connected to the outdoor PC board 1 NO gt Connect properly Is the coil resistance of the electronic expansion valve normal 72 gt Replace the coil of the electronic expansion valve temperature sensor o each thermistor suction pipe discharge pipe intermediate heat exchanger and heat exchanger distribution pipe thermistors mounted NO gt Mount properly Are the characteristics of each thermistor normal 3 NO gt Replace the abnormal thermistor pressure sensor characteristics normal 4 gt Replace the pressure sensor YES 115 Part 4 Troubleshooting Error Codes Outdoor Units ESIE13 02 See also Actually it is in wet operation 7 Refer to to eliminate the causes of wet operation Restart operation Does the malfunction code E9 gt Replace the outdoor PC board A1P ERHQ V3 ERLQ V3 Replace the control PC board A1P ERHQ W1 ERLQ W1
48. GAINST FROST Indicates a situation that could result in equipment or property damage ESIE13 02 Introduction 1 3 For the User If you are not sure how to operate the unit contact your installer The appliance is not intended for use by persons including children with reduced physical sensory or mental capabilities or lack of experience and knowledge unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety Children must be supervised to ensure that they do not play with the product CAUTION Do NOT rinse the unit This may cause electric shocks or fire gt NOTICE m Do NOT place any objects or equipment on top of the unit e m Do NOT sit climb or stand on the unit Units are marked with the following symbol Ld This means that electrical and electronic products may not be mixed with unsorted household waste Do NOT try to dismantle the system yourself the dismantling of the system treatment of the refrigerant of oil and of other parts must be done by an authorized installer and must comply with applicable legislation Units must be treated at a specialized treatment facility for reuse recycling and recovery By ensuring this product is disposed of correctly you will help to prevent potential negative consequences for the environment and human health For more information contact your installer or
49. IE13 02 3 5 CO Hydro box Flow Sensor Failure Remote controller display Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting The protection device circuit checks the flow input signal during pump stop operation The error is generated in case flow input signal during pump stop operation occurs m Malfunction of the flow sensor m Water flow caused by external source Check the installation conditions Is there an external pump installed in the water circuit of the hydro box Remove the external pump or separate the external pump Yes hydraulically from the hydro box via a balance vessel No Check on connector if 2 3 gt 0 6V Replace hydro box PCB Yes Replace flow sensor 1 Do not disconnect the connector of the flow sensor on the PCB X4A Measure the voltage value on the connector of the flow sensor between pin 2 and 3 Part 4 Troubleshooting 100 ESIE13 02 Error Codes Hydro box 3 6 EC Hydro box Domestic Hot Water Tank Temperature too High gt 89 Remote controller display Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting ri The malfunction is detected by domestic hot water tank thermistor R5T The error is generated in case the domestic hot water temperature rise above 89
50. LED blinks Microcomputer Normal Monitor Contents Processing HAP LED A Ti Failure of hydro box PC board assembly Note 5 e Malfunction of power supply or failure of PC board assembly or broken transmission wire between indoor and outdoor unit Note 5 Notes 1 Operation halts due to malfunction depending on the model or condition 2 Troubleshoot by turning off the power supply for a minimum of 5 seconds turning it back on and then rechecking the LED display 79 Part 4 Troubleshooting Troubleshooting ESIE13 02 1 6 Overview of Error Codes Abbreviations DHW domestic hot water SPH space heating BUH back up heater BSH booster heater PHE plate heat exchanger 1 6 1 Hydro box Malfunction Overview Remote Contents of Malfunction Details of Controller Malfunction Display Reference Page 80 Return water temperature thermistor abnormality 96 Leaving water temperature thermistor abnormality 96 89 freeze up protection control 95 Water flow abnormality 97 RH Tank disinfection function not completed correctly 102 Zero cross detection problem Power reset required 94 NT Room temperature sensor problem 96 co Flow sensor abnormality 100 CH Heat exchanger thermistor abnormality 96 EC Abnormal increase tank temperature 101 Hi External temperature sensor problem 96 HC Tank temperature thermistor problem 96 Part 4
51. N YES The phase of inter unit wiring between the indoor and outdoor connection of units is incorrect Is the refrigerant level proper See also Correctly connect inter unit wiring between the indoor and outdoor units inter unit wiring and piping NO between the hydro box and gt Match the connection of outdoor units the inter unit wiring and matched piping between the indoor and outdoor units NO Recharge a proper amount of refrigerant after refrigerant collection and vacuum drying Check the refrigerant piping system for clogging 2 m 1 Check No 13 Check for Inadequate Refrigerant on page 161 m 2 Check No 8 Clogged Points on page 158 Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Caution 147 Part 4 Troubleshooting Error Codes System Malfunctions ESIE13 02 5 6 US Malfunction of Transmission between Hydro box and Remote Controller Remote controller uS display Error generation The error is generated when the microprocessor detects that the transmission between the hydro box and the remote controller is not normal over a certain amount of time Supposed causes The possible causes are Malfunctioning remote controller Malfunctioning indoor PCB m Outside cause noise m Connection of two maste
52. Part 2 Specifications Gas Condensing Boiler ESIE13 02 1 Gas Condensing Boiler 1 1 Technical Specifications GAS MODULE INDOOR UNIT EHYKOMB33AA Function Heating only Thermal load Hi Min Max kW 7 5 32 7 Heating power CH Min Max 80 60 kW 7 9 31 9 Efficiency CH NCV 80 60 96 98 Efficiency CH NCV 40 30 30 96 107 Heating power DHW Min Max kW 7 9 31 9 Efficiency DHW NCV 96 105 Casing Colour RAL9010 Dimensions Unit Height x width x depth mm 710x450x240 Weight Unit kg 36 Gas categories Pressure mBar Brand Country Gas category G20 G25 G30 G31 G37 DAIKIN UK 2 20 30 37 IIZEsi3B P 20 25 30 BE I2E S B 20 25 I3P 30 SP 2 20 30 37 IT 2 20 30 IIZELL3P 20 25 50 Part 2 Specifications 42 ESIE13 02 Gas Condensing Boiler Sensor characteristics Gas type Natural gas H Propane P Gas category 2H 3P G20 G31 propane 20 mBar 29 mBar CO2 at low setting L and 2x 8 4 9 6 9 4 10 8 with opened casing at high setting L 7 and 2x 8 6 9 6 9 8 10 8 with opened casing Gas supply pressure mBar 20 30 25 35 gas metering ring mm HRE36 30 6 95 5 25 Minimum rpm 96 of max parameter d 25 40 Minimum start rpm 96 of max param
53. Q011 016 W1 ERHQ011 016 W1 X32A A2P Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 4 Troubleshooting 120 ESIE13 02 Error Codes Outdoor Units 4 9 HY 93 95 06 JT J8 Thermistor or Related Abnormality Outdoor Unit Remote controller o3 JS Jb 7 UB display Method of Abnormality is detected according to the temperature detected by each individual thermistor malfunction detection Malfunction When thermistor is disconnected or short circuited during operation decision conditions Supposed causes m Faulty thermistor m Faulty connection of connector m Faulty outdoor unit PC board control PC board Troubleshooting Check connectors for connection NO gt Connect correctly YES Remove thermistor from outdoor unit PC board then measure the resistance using a tester NO Replace the thermistor YES Replace the outdoor unit PC board A1P ERHQ V3 ERLQ V3 Replace the control PC board A1P ERHQ W1 ERLQ W1 H9 Malfunction of outdoor temperature thermistor system J3 Malfunction of discharge pipe thermistor system J5 Malfunction of suction pipe thermistor system J6 Malfunction of heat exchange thermistor J7 Malfunction of subcooling heat exchanger thermistor J8 Malfunction of liquid thermistor See also Check No
54. SIE13 02 Troubleshooting 1 2 2 Indoor Pump Operates but Compressor does not Applicable model ERHQ011 016 ERLQ004 016 Error detection method Error generating condition Supposed causes m Faulty thermistor m Faulty indoor outdoor unit PC board m Faulty magnetic switch m Faulty power transistor m Faulty compressor Continuous pump operation enabled by setting 57 Part 4 Troubleshooting Troubleshooting ESIE13 02 Troubleshooting Caution Hydro box pump runs at set flow rate Is setting A 2 1 9 pump operation mode set t YES gt N 0 continuous pump ormal operation operation Is the power YES Switch for Turn on the power P blown Switch or replace fuse Is the heating Switch turned on at outdoor YES 7 Normal temperature gt 35 Thermostat OFF by outdoor temperature Is rated voltage applied at the YES compressor Replace the compressor terminals Is rated voltage output from the YES magnetic switch or power gt Replace the magnetic transistor switch or power transistor Is rated voltage output from the YES PC board gt Replace the PC board Magnetic switch Check the thermistor Gl D COMP Output from relay or microcomputer Q Output from Output from magnetic m
55. X12A of A1P 2 Compare the expansion valve unit with the number of the connector to make sure it is cor rectly connected 3 Switch the power OFF 4 Switch the power ON to check whether the expansion valve is producing a clicking sound If Then The expansion valve has no clicking sound Disconnect the valve connector without the clicking sound and proceed to step 5 5 Check the coil current Open circuit normal short circuit The table below contains the reference resistance values White Grey Black Yellow Red Orange White oo 450 450 Grey eo 450 eo 450 Black 450 eo 00 900 eo Yellow oo 450 oo 90 O Red 450 eo 90 O eo eo Orange 450 oo 90 O oo 6 Check the clicking sound again If Then There is a clicking sound The expansion valve works properly There is no clicking sound Replace the expansion valve unit There is still no clicking sound Replace outdoor PCB A1P 151 Part 4 Troubleshooting Additional Checks for Troubleshooting ESIE13 02 6 3 Check No Thermistors Overview of thermistors Checking 3 Checking the Thermistors If the cause of the problem is related to the thermistors then the thermistors should be checked prior to changing the PCB For more information about these thermistors see m Exter
56. agnetic switch or SW Switch or circuit of U V W of power power transistor transistor Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 4 Troubleshooting 58 ESIE13 02 Troubleshooting 1 2 3 Cooling Heating Operation Starts but Stops Immediately Applicable model ERHQ011 016 ERLQ004 016 Error detection method Error generating condition Supposed causes m Excess charge of refrigerant m Air intrudes into refrigerant system m Faulty pressure switch m Faulty magnetic switch for outdoor unit fan motor m Faulty aux relay for outdoor unit fan motor m Soiled heat exchanger of outdoor unit m There is an interfering item in air flow of outdoor unit Malfunction of outdoor unit fan m Soiled air filter of hydro box Malfunction of hydro box pump flow error 59 Part 4 Troubleshooting Troubleshooting ESIE13 02 Troubleshooting Caution Heating Hydro box Cooling Outdoor unit Is the type of remote controller ired or wireless Is the remote controller displaying the symbol NO YES Does the pump fan rotate YES YES Is the filter soiled Hydro box flow error Is there any item disturbing XES air waterflow Hydro box flow error Is the heat YES exchanger soiled Possible causes as follows Refrigerant ov
57. ard due to the inadvertent resetting of the thermal cut out this appliance must NOT be supplied through an external switching device such as a timer or connected to a circuit that is regularly turned ON and OFF by the utility Danger RISK OF BURNING 85 Part 4 Troubleshooting Error Codes Gas Condensing Boiler ESIE13 02 2 2 Solving Problems Based on Symptoms Not available at this moment Part 4 Troubleshooting 86 ESIE13 02 Error Codes Gas Condensing Boiler 2 3 Solving Problems Based on Error Codes When problem happens an error code appears on the user interface It is important to understand the problem and to take countermeasure before resetting the error code This should be done by a licensed installer or by your local dealer This chapter gives you an overview of all error codes and the content of the error code as it appears on the user interface For a more detailed troubleshooting guideline for each error please see the service manual 2 3 4 Error codes Overview Error codes of the The controller on the gas boiler detects faults and indicates them on the display by error codes gas boiler If the LED is flashing the controller has detected a problem Once the problem is rectified the controller can be restarted by pressing the button Following table shows a list of error codes and the possible solutions a Cause Possibl
58. ating load at low Ta see equilibrium temperature 5 01 the priority shall be given towards space heating see anti recycling timer 8 02 and maximum running timer for domestic hot water 8 01 and domestic hot water shall be covered supported by the electrical heater To guarantee sufficient domestic hot water and reasonable domestic hot water heat up times 2 The applicable Ta can be determined via the Daikin Altherma simulation software extranet software downloads altherma altherma new LT Part 4 Troubleshooting 72 ESIE13 02 Troubleshooting 1 2 14 Space Heating Capacity Shortage at Low Outdoor Temperatures Applicable models Error detection method Error generating condition Supposed causes corrective action EHB CA EHV CA A General independent from DHW setpoint mode Possible causes Corrective action The settings related to space heating operation at low Ta equilibrium temperature status backup heater allowance 5 00 and equilib rium temperature 5 01 are not set or not opti mized according to the site application Optimize the settings related to space heating operation at low Ta equilibrium temperature status backup heater allowance 5 00 and equilibrium temperature 5 01 according to the site application 5 00 1 m 5 01 the applicable Ta where the heating load and Altherma Hybrid available heating capacity ar
59. condition Supposed causes corrective action Possible causes Corrective action The expansion vessel is broken Replace the expansion vessel The water volume in the installation is too high Make sure that the water volume in the installa tion is under the maximum allowed value refer to the Specifications in databook 69 Part 4 Troubleshooting Troubleshooting ESIE13 02 1 2 11 The Water Pressure Relief Valve Leaks Applicable models EHB CA EHV CA Error detection method Error generating condition Supposed causes corrective action Possible causes Corrective action Dirt is blocking the water pressure relief valve outlet Check for correct operation of the pressure relief valve by turning the red knob on the valve coun ter clockwise m f you do not hear clacking sound contact your local Daikin dealer m n case the water keeps running out of the unit close both the water inlet and outlet shut off valves first and then contact your local Daikin dealer Part 4 Troubleshooting 70 ESIE13 02 Troubleshooting 1 2 12 The User Interface Does Not Display Certain Screens RT LWT Tank Ext RT Applicable models EHB CA EHV CA Error detection method Error generating condition Supposed causes corrective action Possible causes Corrective action The tank screen is not
60. d causes corrective action EHB CA EHV CA ERHQ011 016 ERLQ004 016 Possible causes Corrective action The temperature setting is not correct Check the controller set point The water flow is too low Check that all shut off valves of the water circuit are completely open Check if the water filter needs cleaning Make sure there is no air in the system purge air Check on the manometer that there is sufficient water pressure The water pressure must be gt 1 5 bar Check that the pump speed setting is on the highest speed Make sure that the expansion vessel is not broken Check that the resistance in the water circuit is not too high for the pump The water volume in the installation is too low Make sure that the water volume in the installa tion is above the minimum required value refer to the Specifications in databook Part 4 Troubleshooting 66 ESIE13 02 Troubleshooting 1 2 8 The Unit is Turned on but the Compressor is not Starting Space Heating or Domestic Heating Applicable models EHB CA EHV CA ERHQ011 016 ERLQ004 016 Error detection method Error generating condition Supposed causes corrective action Possible causes Corrective action The unit must start up out of its operation range In case of low water temperature the system uti the water temperature is too low lizes the backup heater t
61. d part decreases in heating operation Part 4 Troubleshooting 162 ESIE13 02 Additional Checks for Troubleshooting 6 13 Check No 15 Check for Factors Causing Wet Operation Note Reference values for superheat degree to be used in the judgement of wet operation 1 Suction pipe superheat degree 4 or more 2 Discharge pipe superheat degree 5 C or less The values above must be used only for reference purposes Even it is operated within the range above operation may be normal in other conditions 163 Part 4 Troubleshooting Additional Checks for Troubleshooting ESIE13 02 6 14 Check No 16 Troubleshooting Yonos Para Inverter Pump Only for EH VB004 008 LED Meaning Diagnostic Cause Remedy Lights Pump in operation Pump runs according its Normal operation green setting Blinks RKA model Pump runs during 10 min Normal operation quick in air venting function green Afterwards the targeted performance must be adjusted PWM model Pump in standby Normal operation Blinks red Pump in function Pump restarts by itself 1 Undervoltage U 160 V 1 Check voltage supply green but stopped after the fault is disap 195 V lt U lt 253 V peared Overvoltage U gt 253 V 2 Module overheating 2 Check water and ambi temperature inside motor ent temperature too high Blinks red Pump out of func Pump stopped blocked Pump does not restart by Change pump tion its
62. damages caused by deposits and corrosion To prevent corrosion products and deposits observe the applicable regulations of technology Measures for desalination softening or hardness stabilization are necessary if the filling and top up water have a high total hardness gt 3 mmol I sum of the calcium and magnesium concentrations calculated as calcium carbonate Using filling water and top up water which does NOT meet the stated quality requirements can cause a considerably reduced service life of the equipment The responsibility for this is entirely that of the user 12 ESIE13 02 Introduction 1 4 6 Electrical DANGER RISK OF ELECTROCUTION Turn OFF all power supply before removing the switch box cover connecting electrical wiring or touching electrical parts Disconnect the power supply for more than 1 minute and measure the voltage at the terminals of main circuit capacitors or electrical components before servicing The voltage MUST be less than 50 V DC before you can touch electrical components For the location of the terminals see the wiring diagram Do NOT touch electrical components with wet hands Do NOT leave the unit unattended when the service cover is removed WARNING If NOT factory installed a main switch or other means for disconnection having a contact separation in all poles providing full disconnection under overvoltage cate gory III condition shall be installed in the fixed
63. de air conditioning unit Insert cushion materials to the pipe support such as saddle Normal The noise is a sound generated at the time of gas refrigerant flow change or stop Disassemble and remove parts contact Correct piping manually or attach a dead weight to pipe Normal Creak generates by shrinkage of resin parts due to temperature change Normal It is normal After vacuum drying charge correct amount of refrigerant Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 4 Troubleshooting 64 ESIE13 02 Troubleshooting 1 2 6 User Interface Displays 259 Applicable model Error detection method Error generating condition Supposed causes Troubleshooting Caution EHB V CA rouble generates YES just after power supply ON Check the unit based on hydro box LED and outdoor unit LED Troubleshooting gt The unit is checking to confirm that remote controller is normal Indication appears for short time Be sure to turn off power switch before connect or disconnect connector or parts damage may have occurred 65 Part 4 Troubleshooting Troubleshooting ESIE13 02 1 2 7 The Unit is Turned on LED is lit but the Unit is not Heating or Cooling as Expected Applicable models Error detection method Error generating condition Suppose
64. e in balance Other related settings to optimize m 5 02 1 5 03 5 01 2 3 5 C 73 Part 4 Troubleshooting Troubleshooting ESIE13 02 1 2 15 Room Temperature Set Point Isn t Reached or Increases Too Slow Applicable models Error detection method Error generating condition Supposed causes corrective action EHB CA EHV CA Possible causes Corrective action See possible causes of item 2 Possible space heating capacity shortage at low Ta See corrective actions of item 2 Possible space heating capacity shortage at low Ta The leaving water temperature set point weather dependent or fixed is too low in rela tion with the target room temperature set point Select the desired leaving water temperature in balance with the desired room temperature 2 and or the capacity Secondly the desired leav ing water temperature shall be in relation to the temperature difference between inlet and outlet water temperature of the heat emitters accord ing to the design and selection of the heat emit ters 1 The desired leaving water temperature is the result of several settings preset values shift values weather dependent curves modulation As a result too high or too low leaving water temperature could occur which lead to overtemperatures or capacity shortage By limiting the leaving water temperature range to adequate value
65. e risk suffocation gt gt gt D DANGER RISK OF BURNING Do NOT touch the refrigerant piping water piping or internal parts during and immediately after operation It could be too hot or too cold Give it time to return to normal temperature If you must touch it wear protective gloves m Do NOT touch any accidental leaking refrigerant NOTICE Provide adequate measures to prevent that the unit can be used as a shelter by small animals Small animals that make contact with electrical parts can cause malfunc tions smoke or fire CAUTION IN Do NOT touch the air inlet or aluminium fins of the unit NOTICE Do NOT place any objects or equipment on top of the unit Do NOT sit climb or stand on the unit In accordance with the applicable legislation it might be necessary to provide a logbook with the product containing at least information on maintenance repair work results of tests stand by periods Also at least following information must be provided at an accessible place at the product m Instructions for shutting down the system in case of an emergency m Name and address of fire department police and hospital m Name address and day and night telephone numbers for obtaining service In Europe EN378 provides the necessary guidance for this logbook 10 ESIE13 02 Introduction 1 4 2 Installation site Provide sufficient space around the unit fo
66. e solution 10 11 Sensor fault S1 m Check wiring e 13 m Replace S1 Flow sensor cannot close Check flow switch 20 21 Sensor fault S2 m Check wiring 23 m Replace S2 0 Sensor fault after self check Replace S1 and or S2 1 Temperature too high m Airin installation m Pump is NOT running m Insufficient flow in installation m Radiators are closed m Pump setting is too low m Flow switch is sticking 2 1 and S2 interchanged m Check cable set m Replace S1 and S2 4 No flame signal m Gas tap is closed m Noor incorrect ignition gap m Gas supply pressure is too low or fails m Gas valve or ignition unit is NOT powered 87 Part 4 Troubleshooting Error Codes Gas Condensing Boiler ESIE13 02 bs Cause Possible solution 5 Poor flame signal m Condensate drain blocked m Check adjustment of gas valve 6 Flame detection fault m Replace ignition cable and spark plug cap m Replace ignition unit m Replace boiler controller 8 Incorrect fan speed m Fan catching on casing m Wiring between fan and casing m Check wiring for poor wire contact m Replace fan 29 30 Gas valve relay fault Replace boiler controller Part 4 Troubleshooting 88 ESIE13 02 Error Codes Gas Condensing Boiler 2 4 Symptoms 2 4 4 Burner does not ignite Possible causes Solution Gas tap is closed Open gas tap Yes gt m Air in the gas pipe Remove air from
67. eat pump manual The service display displays the gas boiler is Switched off Switch on the gas boiler with No current 24 V m Check the wiring m Checkthe connector X4 m Replace the faulty pump The burner does NOT fire on space heating sensor S1 or S2 faulty Replace sensor 51 or 52 See Error codes of the gas boiler on page 87 Burner does NOT ignite See 2 4 1 Burner does not ignite on page 89 Part 4 Troubleshooting Error Codes Gas Condensing Boiler ESIE13 02 2 4 6 Symptom The power is reduced Possible causes Corrective action At high rpm the power has fallen by more than 596 m Check the appliance and flue system for fouling m Clean the appliance and flue system 2 4 7 Symptom Space heating does NOT reach the temperature Possible causes Corrective action Weather dependent setpoint setting is incorrect Check the setting on the user interface and adjust if necessary Temperature is too low Increase the space heating temperature No circulation in the installation Check whether there is circulation At least 2 or 3 radiators MUST be open The boiler power has NOT been correctly set for the installation Adjust the power See installation and operation manual HPU hybrid gas boiler module No heat transfer as a result of lime scale or foul ing in the heat exchan
68. ect connector or parts damage may be occurred 145 Part 4 Troubleshooting Error Codes System Malfunctions ESIE13 02 5 5 UF Malfunction of Transmission between Hydro box and Outdoor Unit or Gas Shortage Remote controller display Method of malfunction detection Malfunction decision conditions Supposed causes c Check the transmission between the indoor and outdoor units with a microcomputer when the power turned ON Detect by checking the following temperature differences during compressor operation A Difference in temperature detected by the indoor liquid thermistor R3T and the indoor suction air thermistor R1T B Difference in evaporation temperature Te or condensation temperature Tc during heating operation detected by the indoor heat exchanger thermistor R2T and the compressor sensor When the inter unit wiring between the indoor and outdoor units is incorrect When the following conditions continue for 20 minutes during compressor operation A R2T R1T 4 C and B R2T Te or Tc during heating operation gt 14 24 during heating operation m Faulty inter unit wiring between the indoor and outdoor units m Refrigerant shortage out of gas m Clogged refrigerant piping system Part 4 Troubleshooting 146 ESIE13 02 Error Codes System Malfunctions Troubleshooting Does UF appear when the power is turned O
69. elf due to a permanent failure LED off No power supply No voltage on electronics 1 Pump is not connected 1 Check cable connection to power supply 2 LED is damaged 2 Check if pump is running 3 Electronics are damaged 3 Change pump If the fault cannot be remedied please consult the specialist technician or the Wilo factory after sales service Part 4 Troubleshooting 164 ESIE13 02 Part 5 Repair What is inthis part This part contains the following chapters Chapter See page 1 Tips and Tricks 166 165 Part 5 Repair Tips and Tricks ESIE13 02 1 Tips and Tricks Not available at this moment Part 5 Repair 166 ESIE13 02 Part 6 Maintenance What is inthis part This part contains the following chapters Chapter See page 1 Maintenance Schedule 168 167 Part 6 Maintenance Maintenance Schedule ESIE13 02 1 Maintenance Schedule 1 1 Maintenance Introduction In order to ensure optimal availability of the unit number of checks and inspections on the unit and the field wiring have to be carried out at regular intervals Precaution m Before carrying out any maintenance or repair activity always switch off the circuit breaker on the supply panel remove the fuses or open the protection devices of the unit m sure that before starting any maintenance or repair activit
70. ercharge Mixing of air in refrigerant system Faulty pressure switch Diagnose based on the error code on remote controller Malfunction of fan motor Check the magnetic switch and aux switch for pump fan motor Cleaning Remove the disturbing item Cleaning of the heat exchanger After vacuum drying charge correct amount of refrigerant Check the pressure switch Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 4 Troubleshooting 60 ESIE13 02 Troubleshooting 1 2 4 After Unit Shuts Down It cannot be Restarted for a While Applicable model ERHQ011 016 ERLQ004 016 Error detection method Error generating condition Supposed causes m Overcurrent relay for compressor m Compressor protection thermostat Overcurrent relay may act due to the following reasons Lower voltage of power supply Excess level of high pressure Insufficient size of power cable Malfunction of compressor m Compressor protection thermostat may act due to the following reasons Internal leakage of four way valve There is no difference between suction and discharge temperature Insufficient compression of compressor Incorrect refrigerant Faulty expansion valve Insufficient circulation of refrigerant 61 Part 4 Troubleshooting Troubleshooting ESIE13 02 Troubleshooting Caution Turn t
71. eshooting 6 5 Check No 5 Resistance Conversion Table Discharge Pipe Sensor Temperature The table below is the discharge pipe thermistor temperature resistance conversion table resistance Temp Resist Temp Resist Temp Resist kQ 60 0 52 8 130 0 5 4 62 0 48 9 132 0 5 4 6 0 1120 0 64 0 453 134 0 4 8 4 0 1002 5 66 0 42 0 136 0 4 6 2 0 898 6 68 0 39 0 138 0 4 3 0 0 806 5 70 0 36 3 140 0 4 1 2 0 724 8 72 0 33 7 142 0 3 9 4 0 6522 74 0 31 4 144 0 3 7 6 0 587 6 76 0 292 146 0 3 5 8 0 530 1 78 0 272 148 0 3 3 10 0 478 8 80 0 25 4 150 0 32 12 0 432 9 82 0 23 7 152 0 3 0 14 0 392 0 154 0 2 9 16 0 355 3 156 0 2 7 18 0 322 4 158 0 2 6 20 0 292 9 160 0 2 5 22 0 266 3 92 0 16 9 162 0 2 3 24 0 242 5 94 0 15 8 164 0 2 5 26 0 221 0 96 0 14 8 166 0 2 1 28 0 201 6 98 0 13 9 168 0 2 0 30 0 184 1 100 0 13 1 170 0 1 9 32 0 168 3 102 0 12 3 172 0 1 9 34 0 154 0 104 0 11 5 174 0 1 8 36 0 141 0 106 0 10 8 176 0 1 7 38 0 129 3 108 0 10 2 178 0 1 6 40 0 118 7 110 0 9 6 180 0 1 5 42 0 109 0 112 0 9 0 44 0 1002 114
72. eter F 70 50 NTC 12 kOhm T C R ohm T C R ohm T C R ohm 15 76020 25 12000 65 2752 10 58880 30 9805 70 2337 5 45950 35 8055 75 1994 0 36130 40 6653 80 1707 5 28600 45 5522 85 1467 10 22800 50 4609 90 1266 15 18300 55 3863 95 1096 20 14770 60 3253 100 952 43 Part 2 Specifications Hydro box ESIE13 02 2 Hydro box 2 1 Technical Specifications EHYHBHO5 EHYHBHOS EHYHBX08 Casing Colour White Dimensions Unit Height mm 900 Width mm 450 Depth mm 165 Weight Net weight kg 28 Main compo Pump Type DC motor nents Nr of speed Inverter controlled Power input W 45 Water side heat Type Brazed plate exchanger Qty Water volume 0 9 1 3 Water flow rate l min 5 0 11 0 min Insulation material Green felt Green felt Elastomeric foam Expansion vessel Volume 10 Max water bar 3 pressure Pre pressure bar 1 Water filter Diameter perfo mm 1 rations Material Body copper brass filter element stainless steel Heating circuit Piping connections e 22 mm CU Safety valve bar 3 Manometer Yes Drain valve Fill valve Yes Shut off valves Yes Air purge valve Yes Refrigerant circuit Gas side mm 15 9 Liquid side mm 6 35 Part 2 Specifications 44 ESIE13 02 Hydro box Operation range Outdoor tempera Space cooling C
73. expansion valve Part 4 Troubleshooting 106 ESIE13 02 Error Codes Outdoor Units Troubleshooting Is the stop valve open YES Is it in cooling operation YES In cooling operation pressure sensor connector X17A roperly connected to the A1p PC board YES NO Open the stop valve NO Is the heat exchanger distribution pipe thermistor connector X12A properly connected to the outdoor PC Connect the connector properly gt Replace the low pressure Measure the voltage between the connector pins 1 and 3 above refer to 1 s the relation between low pressure and voltage normal refer to 2 YES sensor Remove the thermistor from the outdoor PC board and measure resistance between the pins 5 and 6 Is it normal Replace the group thermistor NO Replace the low pressure sensor See also US low Is low pressure Replace the outdoor PC board A1P ERHQ V3 ERLQ V3 Replace the Control PC board ERHQ W1 ERLQ W1 Replace the PC board equipped with resin case NO gt Correct the refrigerant system defect m Check No 7 Evaluation of Abnormal Low Pressure on page 157 m Check No 11 Outdoor Unit Check for Power Transistor on page 160 107 Part 4 Troubleshooting E
74. gas pipe Nog Gas supply pressure too low Nog Yes gt Contact the gas company Yes gt No ignition Replace ignition pin Yes gt No 4j No spark Ignition unit on gas block Check the cabling Check the spark faulty Yes gt plug cap Replace the ignition unit No Gas air adjustment not correctly set Check adjustment See gas air adjust Yes gt ment i i z lt Check the wiring Check the fuse if Fan faulty Yes gt necessary replace the fan z o Fan dirty Clean the fan Yes gt 25 Replace the gas block Re adjust the Gas block faulty Yes gt gas block see gas air adjustment 89 Part 4 Troubleshooting Error Codes Gas Condensing Boiler ESIE13 02 2 42 Burner ignites noisily Possible causes Solution Gas supply pressure too high The house pressure switch may be Yes gt faulty Contact the gas company No i Incorrect ignition gap Replace the ignition pin Check the Yes gt ignition pin gap No 7 Gas air adjustment not correctly set Check the setting See gas air adjust J y Yes gt ai g g J M Weak spark Check the ignition gap Replace the ignition pin Replace the ignition unit transformer on the gas block Cd EI he Spark gap 4 5 mm 28 3 30 2 mm 2 4 3 Burner resonating
75. ger Descale or flush the heat exchanger on the space heating side 2 4 8 Symptom No domestic hot water Possible causes Corrective action No current at the flow switch 5 V DC Check the wiring according to the diagram The burner is NOT firing on domestic hot water S3 faulty Replace S3 The burner does NOT ignite See 2 4 1 Burner does not ignite on page 89 Part 4 Troubleshooting 92 ESIE13 02 Error Codes Gas Condensing Boiler 2 4 9 Symptom Hot water does NOT reach the temperature Possible causes Corrective action Domestic hot water flow is too high Adjust the inlet assembly Temperature setting for water circuit is too low Set the hot water circuit on the heat pump user interface depending on the desired tempera ture No heat transfer as a result of lime scale or foul ing in the heat exchanger domestic hot water side Descale or flush the exchanger domestic hot water side Cold water temperature lt 10 C The water inlet temperature is too low 93 Part 4 Troubleshooting Error Codes Hydro box ESIE13 02 3 Error Codes Hydro box 3 1 AY Malfunctioning Hydro box PCB User interface Hi display Error generation The error is generated when the data from the EEPROM is not received correctly EEPROM Electrically Erasable Programmable Read Only Memor
76. ger thermistor check Is it conform to the thermistor characteristic chart NO YES Replace the hydro box PCB gt Replace the thermistor replace the hydro box PCB See also Check No 4 Resistance Conversion Table Ambient Coil Fin on page 153 Be sure to turn off power switch before connecting or disconnecting connector otherwise parts may be damaged 95 Part 4 Troubleshooting Error Codes Hydro box ESIE13 02 3 3 Cu CH 81 80 Thermistor or Related Abnormality Hydro box User interface display Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting C r Ed en z The temperatures detected by the thermistors are used to determine thermistor errors When the thermistor input is more than 4 96 V or less than 0 04 V during compressor operation reference When above about 212 C less than 120 ohms or below about 50 more than 1 860 kOhms Note The values vary slightly in some models m Faulty connector connection m Faulty thermistor m Faulty PCB Check the connector connection NO gt Correct the connection YES Check No 04 Thermistor resistance check NO Replace the thermistor Replace the hydro box PCB YES Replace the hydro box PCB CU Room temperature thermistor HC Tank te
77. gnature Service 9 Date Engineer Name Service 10 Date Engineer Name Company Name Company Name Telephone No Telephone No Gas Safe Register No Gas Safe Register No Comments Comments Signature Signature Part 6 Maintenance
78. gt Replace the outdoor PC board A1P ERHQ V3 ERLQ V3 Replace the control PC Board A1P ERHQ W1 ERLQ W1 gt Check for faulty connector connection in the transmission wiring and for clamps with high tension line Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 135 Part 4 Troubleshooting Error Codes Outdoor Units ESIE13 02 4 17 PY Open Phase or Power Supply Voltage Imbalance Remote controller Pi display Method of Malfunction is detected according to the voltage waveform of main circuit capacitor built in inverter malfunction detection Malfunction When the aforementioned voltage waveform becomes identical with the waveform of the power supply decision conditions open phase Supposed causes m Open phase m Voltage imbalance between phases m Faulty outdoor inverter PC board m Faulty main circuit capacitor m Powerunit Disconnection in diode module m Faulty magnetic relay K11R K12R m Improper main circuit wiring Troubleshooting Check LED on NO the outdoor unit PC board Other factors than open Open phase phase Open YES phase of power supply Field factors voltage Is the voltage imbalance between phases Field factors large gt Replace the outdoor PC board A1P ERHQ V3 ERLQ V3 Note Replace the inverter PC board Target 10V between phases R S S T R
79. he elapse after turning ON NO 25 Compressor s protective themostat again for a while Operation switch OFF Runs 26 The causes for the overcurrent after stopping and On relay for compressor being actuated are 26 1 Power supply voltage is lower than prescribed ERE 26 2 High pressure is too high Operation is 26 3 The power supply cord is too small normal 26 4 The compressor is broken Is there something causing the 27 causes for the compressor s indoor load to be large such as protective thermostat an open window or door 27 1 Internal leak of the 4way valve YES No substantial difference between The unit runs but NO suction and discharge temperature doesn t cool the I NI Measure the suction H Temperature 27 2 Unsatisfactory compression from tom disharge temperature differential is 8 18 C the compressor 27 3 Different kind of refrigerant is Temperature differential _ charged suction temperature discharge temperature 27 4 Malfunction of the expansion valve 27 5 Unsatisfactory refrigerant circulation Operation is normal Is there something causing the indoor heat load to be large such as an open window or door YES Bade nd ut Measure the suction Temperature NO room disharge temperature ___ 2 differential is 14 30 OK We ll be right over
80. he error is generated when the microprocessor detects that the transmission between the indoor and the outdoor unit is not normal over a certain amount of time The possible causes are m Wiring indoor outdoor transmission wire is incorrect Malfunctioning hydro box PCB Malfunctioning outdoor unit PCB m Outside cause noise Diagnosis of incorrect or broken disconnected wiring If the LEDs on the hydro box PC board are off it indicates that the transmission wiring between indoor and outdoor units may be incorrect or broken disconnected Is the power supply voltage between NO gt Field factor 180 and 220 VAC YES Is there miswiring a wrong wire type loose terminal or contact YES failure in the inter unit wiring between the hydro box and outdoor units Is HAP on the Outdoor PC board blinking YES gt Wire correctly and securely fasten the terminal screws Replace fuse Use only specified fuses Outdoor PC board NO Turn OFF the power supply and disconnect the connector of the outdoor fan motor Then power ON again Is YES 8 blinking Outdoor PC board NO ERHQ V3 ERLQ V3 Replace the outdoor fan motor Does the fuse F3U on the communicator PC board A4P have No continuity ERHQ W1 ERLQ W1 Does the fuse F6U on the control PC board A1P have No continu
81. he operation switch ON and OFF then wait at ON side Does the unit start operation after 3 minutes compressor hot after unit stop YES YES Normal Unit is in 3 min Electric system Power supply voltage is within 10 of specified voltage L Not so hot YES 7 standby mode Contact power company Check on the cause why overcurrent relay for compressor or compressor protection thermostat acted Is the size of power cable through total length correct Refrigerant circuit 4 YES Check compressor Replace power cable After vacuum drying charge correct amount of refrigerant Then start operation again s there any temperature difference between inlet and outlet of expansion valve YES ls there any temperature difference between suction side and discharge side of four way valve YES Expansion valve malfunction Four way valve malfunction Malfunction of compressor gt Check compressor Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 4 Troubleshooting 62 ESIE13 02 Troubleshooting 1 2 5 Equipment Produces Loud Noise or Shakes Applicable model ERHQ011 016 ERLQ004 016 Error detection method Error generating condition Supposed causes m Faulty in
82. hooting Check the installation conditions Is the stop valve Open the stop valve open Is the UVW wiring i Connect correctly normal Is high pressure higher than 2 6 MPa at starting Remedy the cause Check and see whether compressor is short circuited or ground YES Replace the compressor Are inverter output voltages the same for 3 phases Replace the inverter PC board A1P ERHQ V3 ERLQ V3 A2P ERHQ W1 ERLQ W1 Does low or high pressure vary even instantaneously when restarting compressor YES gt Replace the compressor Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 4 Troubleshooting 110 ESIE13 02 Error Codes Outdoor Units 4 5 ET Malfunction of Outdoor Unit Fan Motor Remote controller display Method of malfunction detection Malfunction decision conditions Supposed causes 2d Abnormality of fan motor system is detected according to the fan speed detected by hall IC when the fan motor runs m When the fan runs with speed less than a specified one for 15 seconds or more when the fan motor running conditions are met wm When connector detecting fan speed is disconnected wm When malfunction is generated 4 times the system shuts down wm Malfunction of fan motor m The harness connect
83. ied out in a specified period of time or longer decision conditions Supposed causes m Incorrect transmission wiring between control and inverter PC board insufficient contact in wiring m Faulty control and inverter PC board m External factors noise etc m Faulty outdoor fan motor m Faulty of fan motor connector contact Part 4 Troubleshooting 134 ESIE13 02 Error Codes Outdoor Units Troubleshooting Caution Is the fan motor connector NO connected Are connectors connecting the NO gt Connect the connector and turn on again control and inverter PC board connected securely transmission wiring between the control and inverter YES gt Connect the transmission wiring and turn on again PC board disconnected Disconnect the fan motor connector and turn on again Is E7 displayed on the remote controller YES gt Fix the disconnection and turn on again Is LC not displayed Is the microcomputer normal monitor green on NO gt Replace the fan motor Inverter transmission malfunctioned due to the malfunction of fan motor inverter PC board blinking Is the microcomputer NO gt Replace the outdoor PC board A1P ERHQ V3 ERLQ V3 Replace the inverter PC Board A2P ERHQ W1 ERLQ W1 normal LED on control PC board blinking
84. in the power transistor IGBT Is the continuity normal NO gt Replace the inverter PC board A1P ERHQ V3 ERLQ V3 Replace the inverter PC Board A2P ERHQ W1 ERLQ W1 Is the inverter output voltage generated approximately at the same increasing speed on each NO gt Replace the inverter PC board A1P phase after turning When operating compressor ERHQ V3 ERLQ V3 on again with compressor output line Replace the inverter PC Board A2P U V V W disconnected the compressor ERHQ W1 ERLQ W1 W U stops due to malfunction after elapsed time of 5 seconds Therefore check the voltage increase for 5 seconds Compressor inspection Inspect according to the diagnosis procedure for abnormal noises vibration operating status etc of the compressor See also Check No 11 Outdoor Unit Check for Power Transistor on page 160 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 133 Part 4 Troubleshooting Error Codes Outdoor Units ESIE13 02 4 16 LE Malfunction of Transmission System Between Control and Inverter PCB ic Remote controller LL display Method of Checks and sees whether transmission between control and inverter PC board is carried out normally malfunction detection Malfunction When the transmission is not carr
85. ir Coil Outdoor Ambient Coil Pipe resistance without discharge Fin temperature resistance conversion table Temp Temp A kQ B kO Temp A kQ C C C 20 197 81 192 08 20 25 01 24 45 60 4 96 4 87 19 186 53 181 16 21 23 91 23 37 61 4 79 4 70 18 175 97 170 94 22 22 85 22 35 62 4 62 4 54 17 166 07 161 36 23 21 85 21 37 63 4 46 4 38 16 156 80 152 38 24 20 90 20 45 64 4 30 4 23 15 148 10 143 96 25 20 00 19 56 65 4 16 4 08 14 139 94 136 05 26 19 14 18 73 66 4 01 3 94 13 132 28 128 63 27 18 32 17 93 67 3 88 3 81 12 125 09 121 66 28 17 54 17 17 68 3 75 3 68 11 118 34 115 12 29 16 80 16 45 69 3 62 3 56 10 111 99 108 96 30 16 10 15 76 70 3 50 3 44 9 106 03 103 18 31 15 43 15 10 71 3 38 3 32 8 100 41 97 73 32 14 79 14 48 72 3 27 3 21 7 95 14 92 61 33 14 18 13 88 73 3 16 3 11 6 90 17 87 79 34 13 59 13 31 74 3 06 3 01 5 85 49 83 25 35 13 04 12 77 75 2 96 2 91 4 81 08 78 97 36 12 51 12 25 76 2 86 2 82 3 76 93 74 94 37 12 01 11 76 77 2 77 2 72 2 73 01 71 14 38 11 52 11 29 78 2 68 2 64 1 69 32 67 56 39 11 06 10 84 79 2 60 2 55 0 65 84 64 17 40 10 63 10 41 80 2 51 2 47 1 62 54 60 96 41 10 21 10 00 2 59 43 57 94 42 9 81 9 61 3 56 49 55 08 43 9 42 9 24 4 53 71 52 38 44 9 06 8 88 5 51 09 49 83 45 8 71 8 54 6 48 61 47 42 46 8 37 8 21 7 46 26 45 14 47 8 05 7 90 8 44 05 42 98 48 7 75 7 60 9 41 95 40 94 49 7 46 7 31 10 39
86. iring imensions Cable D 3 3 u19jut 90982 ASLATAS 51005 91092 S MAS edA 2 Josuas MHA Jeuondo SLOE SL 9Y adh eiqe2 adh _ adh 2 adh 2 2 eBeyoA adh 31929 d jqe9 eBeyoA pue yeay 011 Josues jeuondo jeuondo 210 10 3jueq 104 ejqeo 32e3juoo Ajddns ay 0 jeuondo T9 Ll 9jqeo yun pue yun Iv sed puqAH uses 0 v94 oc woLs S oc vtl 2 v oz 5 gt rot 9c 8 A 0 c uses uses S Z9E S L oc ve M H 8 PLIGAH H MJ pug H S pug H asn4 adh jqe9 jueunj esnj adh uang eBeyoA adh uano Jejroq sef y Ajddng c y Ajddnsg 2 si nA3 LN LH yun y Ajddng 1 aseud ajBuis Buruoisueuip yun
87. isplay Method of malfunction detection Malfunction decision conditions Supposed causes LL Abnormality is detected according to the temperature detected by the discharge pipe temperature sensor m When the discharge pipe temperature rises to an abnormally high level m When the discharge pipe temperature rises suddenly m Faulty discharge pipe thermistor m Faulty connection of discharge pipe thermistor m Insufficient refrigerant amount m Faulty compressor m Disconnection of discharge pipe thermistor 117 Part 4 Troubleshooting Error Codes Outdoor Units ESIE13 02 Troubleshooting Caution Is the discharge pipe temperature high 115 C Abnormality in refrigerant system such as gas shortage faulty compressor etc Conduct inspection Is the discharge pipe thermistor correctly connected to PCB A1P Connect correctly and operate the unit again Is the discharge pipe thermistor attached to the discharge pipe Attach the thermistor and operate the unit again Is the discharge pipe thermistor characteristic normal Replace the discharge pipe thermistor gt Replace the outdoor unit PC board A1P ERHQ V3 ERLQ V3 Replace the control PC board ATP ERHQ W1 ERLQ W1 See also Check No 5 Resistance Conversion Table Discharge Pipe Sensor on page 155 Be sure to turn off
88. it Fan Speed Pulse oO a RO 7 8 9 Disconnect the connector X106A with the power supply OFF and Operation OFF Is the voltage between pins 4 and 3 of X106A about 15 VDC after turning the power supply on Is the voltage between pins 4 and 1 of X106A about 5 VDC Is the voltage between pins 4 and 7 of X106A about 325 VDC 30 VDC Connect the connector X106A with the power supply OFF and Operation OFF When making one turn of the upper fan motor by hand after turning the power supply on is a pulse 0 and 5 V generated 2 times between pins 4 and 1 of X106A Measure at the contact terminal on the harness side with the connector connected Disconnect the connector X107A with the power supply OFF and Operation OFF Is the voltage between pins 4 and 3 of X107A about 15 VDC after turning the power supply on Is the voltage between pins 4 and 1 of X107A about 5 VDC 10 Is the voltage between pins 4 and 7 of X107A about 325 VDC 30 VDC 11 Connect the connector X107A with the power supply OFF and Operation OFF 12 When making one turn of the lower fan motor by hand after turning the power supply on is a pulse 0 and 5 V generated 2 times between pins 4 and 1 of X107A 8 NO Faulty PC board Replace the PC board 10 NO Faulty hall IC Replace the DC fan motor 3 5 7 8 10 YES Replace the PC board 1 Q Fan speed pulse input 0V and 5V 2 O 3 15V 4
89. itch outdoor unit H9 Malfunction of outdoor air temperature sensor system outdoor unit J1 Malfunction of pressure sensor J3 Malfunction of discharge pipe temperature sensor system outdoor unit J3 Malfunction of discharge pipe temperature sensor system outdoor unit 5 J5 Suction pipe thermistor malfunction J6 Malfunction of heat exchanger temperature sensor system outdoor unit J7 Malfunction of subcooling heat exchanger thermistor outdoor unit J8 Malfunction of liquid pipe thermistor outdoor unit L1 Outdoor PC board malfunction L4 Radiation fin temperature rise Malfunction of inverter cooling L5 Instantaneous over current Possibility of compressor motor grounding or shortage of motor winding L8 Electronic thermal Possibility of compressor overload open circuit in compressor motor L9 Stall prevention Possibility of compressor seizing LC Malfunction of transmission system between control PCB and inverter PCB P1 Open phase or voltage unbalance P4 Abnormal radiation fin temperature sensor outdoor unit PJ Failure of capacity setting outdoor unit Either capacity data is set incorrectly or capacity has not been set for the data IC 77 Part 4 Troubleshooting Troubleshooting ESIE13 02 Malfunction code Contents Processing Remarks UO Lack of gas malfunction UO Abnormal suction pipe temperature UO U2 Abnormal
90. itted DOMESTIC HOT WATER MODE Measure and Record Gas Rate m hr OR ft hr Burner Operating Pressure at maximum rate mbar Gas inlet Pressure at maximum rate mbar Cold Water Inlet Temperature e Hot water has been checked at all outlets Yes Temperature Water Flow Rate l min Condensing Boilers Only The Condensate drain has been installed in accordance with the manufacturer s instructions and or BS5546 BS6798 Yes If the condensate pipe terminates externally has the pipe diameter been increased and waterproof insulation fitted Yes ALL INSTALLATIONS If required by the manufacturer record the following OR CO ppm OR co co ratio The heating and hot water system complies with the appropriate Building Regulations Yes The boiler and associated products have been installed and commissioned in accordance with the manufacturer s instructions Yes The operation of the boiler and system controls have been demonstrated to and understood by the customer Yes The manufacturer s literature including Benchmark Checklist and Service Record has been explained and left with the the customer Yes Commissioning Engineer s Signature Customer s Signature To confirm satisfactory demonstration and receipt of ma
91. ity Part 4 Troubleshooting 144 ESIE13 02 Error Codes System Malfunctions YES Check the resistance value of the outdoor fan motor Is the resistance value of the NO outdoor fan motor normal Does the fuse have continuity NO Replace the outdoor fan motor Check the fan output voltage Is the output voltage NO Replace the fuse Use only specified fuses normal YES After turning OFF the power supply correctly insert the connector of the fan motor and then restore the power Does U4 malfunction YES gt Replace the outdoor PC board A1P ERHQ V3 ERLQ V3 Replace the inverter PC board A2P ERHQ W1 ERLQ W1 reoccur Replace the outdoor PC board ATP ERHQ V3 ERLQ V3 After turning OFF the power Supply correctly insert the connector of the fan motor and then restore the power Does malfunction U4 or UF reoccur YES Replace the indoor PC board FUSE Conductive ERLQ V3 ERHQ V3 F6U ERLQ W1 ERHQ W1 F7U There is no problem with the unit An external factor noise etc other than unit failure may be the cause See also Check No 10 Outdoor Unit Fan Speed Pulse on page 159 Caution Be sure to turn off power switch before connect or disconn
92. l Pin 2 3 004 0 7 2 3V 008 016 0 6 2 Yes Check circuit for blockage No M Replace the flow sensor Power supply 230V towards the hydro box pump is OK Check if value for fuse FU2 is OK No Yes Replace the hydro box PCB A1P No Replace the fuse FU2 Hydro box pump gt Replace the hydro box pump is blocked 1 When the pump starts push the ON OFF button manometer needle moves pump vibrations can be detect In case unclear perform item A 2 When the pump runs pump signal is displayed on the interface controller The pump will run for 15 seconds before error code 7H will be displayed In order perform item A completely several pump restarts can be required 3 Check the installation manual for the minimum required water pressure in the system 4 Check the installation manual for the external static pressure values of the different pump speeds 5 Disconnect the connector of the flow sensor on the PCB X4A and measure the resistance value on the connector of the flow sensor At a restart of the system the pump will operate for 15 seconds before error code occurs Use these 15 seconds to confirm the voltages of the flow sensor before the pump will be stopped due to error 7H C 4 Yellow 2 White 3 Green 4 Brown Y ellow White Flow Green GND Brown DC 99 Part 4 Troubleshooting Error Codes Hydro box ES
93. local authority Batteries are marked with the following symbol zd This means that the batteries may not be mixed with unsorted household waste If a chemical symbol is printed beneath the symbol this chemical symbol means that the battery contains a heavy metal above a certain concentration Possible chemical symbols are Pb lead gt 0 004 Waste batteries must be treated at a specialized treatment facility for reuse By ensuring waste batteries are disposed of correctly you will help to prevent potential negative consequences for the environment and human health Introduction ESIE13 02 1 4 For the Installer 1 4 4 General If you are not sure how to install or operate the unit contact your dealer NOTICE Improper installation or attachment of equipment or accessories could result in elec tric shock short circuit leaks fire or other damage to the equipment Only use acces Sories optional equipment and spare parts made or approved by Daikin WARNING Make sure installation testing and applied materials comply with applicable legisla tion on top of the instructions described in the Daikin documentation CAUTION Wear adequate personal protective equipment protective gloves safety glasses when installing maintaining or servicing the system WARNING Tear apart and throw away plastic packaging bags so that nobody especially chil dren can play with them Possibl
94. m Clogged refrigerant piping system m Mismatching of wiring and piping 139 Part 4 Troubleshooting Error Codes System Malfunctions ESIE13 02 Troubleshooting Caution Check for refrigerant shortage 1 Is the refrigerant level proper NO Collect refrigerant and recharge a proper amount of refrigerant after vacuum drying Check the inter unit wiring and piping between the indoor and outdoor units Is wiring NO and piping connection gt Match wiring and piping matched connection gt Check the refrigerant piping system for clogging 2 See also 1 Check No 13 Check for Inadequate Refrigerant on 161 2 Check No 8 Clogged Points on page 158 Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 4 Troubleshooting 140 ESIE13 02 Error Codes System Malfunctions 5 2 Uc Abnormal Power Supply Voltage Remote controller display Method of malfunction detection Malfunction decision conditions Supposed causes c Malfunction is detected according to the voltage of main circuit capacitor built in the inverter and power supply voltage When the voltage of main circuit capacitor built in the inverter and power supply voltage drop for V3 only 150 170 VAC or when the power failure of several tons of ms or longer
95. mperature thermistor CH heat exchanger thermistor 8 Leaving water temperature thermistor 80 Return water temperature thermistor See also Check No 4 Resistance Conversion Table Ambient Coil Fin on page 153 Part 4 Troubleshooting 96 ESIE13 02 Error Codes Hydro box 3 4 IH Hydro box Flow Error User interface AH display Method of The malfunction is detected by the flow sensor malfunction detection Malfunction The error is generated in case the water flow is too low or no water flow at all for 15 seconds decision conditions Supposed causes m Closed shut off valve m Airin the system m Clogged water filter m Insufficient water pressure m Too high external static pressure pump speed setting Malfunction of hydro box pump Hydro box pump fuse open FU2 m During defrost Malfunction of the backup heater Q1L m Backup heater fuse F1B m Incase of EKSWW U EKHWS U EKHWE Malfunction of the 3 way valve m Incase of the EKSWWU EKHWSU Malfunction of the tank thermostat Q1T Q3L Malfunction of 2 way valve Malfunction of flow sensor damaged membrane m 7H 01 waterflow problem 97 Part 4 Troubleshooting Error Codes Hydro box ESIE13 02 Troubleshooting Check the installation conditions Open shut OFF valves Hydro box pump runs 1 Yes Water pressure is s
96. nal connection diagram outdoor unit m System Operation on page 22 The table below contains an overview of the thermistors Thermistor Description Hydro box R1T Outlet water after PHE thermistor 2 Ambient sensor user interface R1T A3P Ambient sensor ON OFF thermistor R2T Outlet water after BUH thermistor R2T External sensor floor or ambient R3T Refrigerant liquid thermistor R4T Inlet water thermistor R5T Domestic hot water tank thermistor R6T External indoor or outdoor ambient thermistor Outdoor R1T Ambient air thermistor R2T Discharge pipe thermistor R3T Suction pipe thermistor R4T Heat exchanger thermistor R5T Intermediate heat exchanger thermistor R6T Liquid pipe thermistor R10T Power module fin thermistor ERHQ ERLQ R7T Power module fin thermistor ERHQ W1 ERLQ W1 optional To check the thermistors proceed as follows Step Action 1 Disconnect the thermistor from the PCB 2 Read the temperature and the resistor value 3 Check if the measured values correspond with the values in the table on the next pages Part 4 Troubleshooting 152 ESIE13 02 Additional Checks for Troubleshooting 6 4 Check No 4 Resistance Conversion Table Ambient Coil Fin Temperature The table below is the thermistor Hydro box Suction a
97. nction code of H3 Replace the high pressure displayed switch HPS NO Replace the outdoor unit PC board A1P ERHQ V3 ERLQ V3 Replace the inverter PC board A2P ERHQ W1 ERLQ W1 T a X a o 5 o a g o o D a P 1 38V 0 69 P Detected pressure MPa V Output voltage Output voltage V See also Check No 6 Evaluation of Abnormal High Pressure on page 156 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 105 Part 4 Troubleshooting Error Codes Outdoor Units ESIE13 02 4 3 Actuation of Low Pressure Sensor Remote controller EH display Method of In cooling m Detect malfunctions by the pressure sensor S1NPH detection In heating m Detect malfunctions by the heat exchanger distribution pipe thermistor RAT Malfunction In cooling decision conditions m When the detection pressure is the following value Supposed causes 0 12 MPa or less continues for 5 minutes When the saturated pressure equivalent to the detection temperature is the following value 0 12 MPa or less continues for 5 minutes The stop valve remains closed Faulty pressure sensor and intermittent harness Faulty outdoor PC board Abnormal drop of low pressure inadequate refrigerant Abnormal refrigerant piping system liquid pipe system Faulty electronic
98. ng 124 ESIE13 02 Error Codes Outdoor Units Troubleshooting Is the power supply voltage between 180 and 220 VAC Turn OFF the power supply once Is the lead wire for compressor connected NO Request an improvement to make the power supply voltage fall within the standard range PC board and compressor without becoming loose Check the resistance value for the fan motor Is the resistance value of the NO gt Connect tightly and correctly fan motor normal Does the NO gt Replace the fan motor fuse F6U have continuity Power ON again Does L1 YES Replace the fuse Use only specified fuses malfunction reoccur gt Replace the outdoor PC board A2P ERHQ V3 ERLQ V3 NO There is no problem with the unit An external factor noise etc other than unit failure may be the cause Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 125 Part 4 Troubleshooting Error Codes Outdoor Units ESIE13 02 4 12 LY Radiation Fin Temperature Increased r m Remote controller display Method of Fin temperature is detected by the thermistor of the radiation fin malfunction detection Malfunction When the temperature of the inverter radiation fin increases abnormally due t
99. ns with hard water To do so drain the domestic hot water tank remove the booster heater from the domestic hot water tank and immerse in a bucket or similar with lime removing product for 24 hours 8 Hydro box switch box m Carry out a thorough visual inspection of the switch box and look for obvious defects such as loose connections or defective wiring m Checkfor correct operation of contactors K1M K2M K3M K5M applications with domestic hot water tank only and 4 by use of an ohmmeter All contacts of these contactors must be in open position Part 6 Maintenance 168 ESIE13 02 Maintenance Schedule GAS BOILER SYSTEM COMMISSIONING CHECKLIST This Commissioning Checklist is to be completed in full by the competent person who commissioned the boiler as a means of demonstrating compliance with the appropriate Building Regulations and then handed to the customer to keep for future reference Failure to install and commission according to the manufacturer s instructions and complete this Benchmark Commissioning Checklist will invalidate the warranty This does not affect the customer s statutory rights Customer Name Telephone Number Adress LE 11 1111 LLL CLE IT LL LL LL LE L LLL LLELLLL GJ Boiler Make and Model Commissioned by print name Gas Safe Register Number Company Name Telephone Number Company Adress Commissioning Date To be completed by the customer on receip
100. nufacturer s literature installations in England and Wales must be notified to Local Authority Building Control either directly or through a Competent Persons Scheme A Building Regulations Compliance Certificate will then be issued to the customer Heating and Hotwater Industry Council HHIC www centralheating co uk 169 Part 6 Maintenance Maintenance Schedule ESIE13 02 Service 1 Date Engineer Name Service 2 Date Engineer Name Company Name Company Name Telephone No Telephone No Gas Safe Register No Gas Safe Register No Comments Comments Signature Signature Service 3 Date Engineer Name Service 4 Date Engineer Name Company Name Company Name Telephone No Telephone No Gas Safe Register No Gas Safe Register No Comments Comments Signature Signature Service 5 Date Engineer Name Service 6 Date Engineer Name Company Name Company Name Telephone No Telephone No Gas Safe Register No Gas Safe Register No Comments Comments Signature Signature Service 7 Date Engineer Name Service 8 Date Engineer Name Company Name Company Name Telephone No Telephone No Gas Safe Register No Gas Safe Register No Comments Comments Signature Si
101. o faulty heat dissipation decision conditions Supposed causes m Activation of fin thermal switch m Faulty fin thermistor m High outside air temperature m Insufficient cooling of inverter radiation fin m Blocked suction opening m Dirty radiation fin m Faulty outdoor inverter PCB Part 4 Troubleshooting 126 ESIE13 02 Error Codes Outdoor Units Troubleshooting Caution Can it be considered that the fin emperature was high 1 YES Eliminate the cause connector of the fin thermistor correctly connected to the outdoor PC board 1 NO Connect correctly Check the resistance value of the thermistor according to the Troubleshooting P4 Does the alfunction code L4 recu when the unit starts operation Replace the outdoor PC board A1P ERHQ V3 ERLQ V3 Replace the inverter PC board A2P ERHQ W1 ERLQ W1 Continue operation Fin temperature detection value Detection Reset ERHQ 011 016 V3 88 78 ERHQ 011 016 W1 88 C 85 C Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 127 Part 4 Troubleshooting Error Codes Outdoor Units ESIE13 02 4 13 715 DC Output Overcurrent Instantaneous Remote controller LS display Method of Malfunction is detected by converting the current flowing to power transi
102. o reach the minimum water temperature first 18 m Check that the backup heater power supply is correct m Check that faston terminals are connected correctly instruction can be found in the Installer Reference Guide in Appendix on page 35 m Check that the backup heater thermal fuse is closed m Check that the thermal protector backup heater is not activated m Check that the backup heater contactors not broken 67 Part 4 Troubleshooting Troubleshooting ESIE13 02 1 2 9 Pump is Making Noise Cavitation Applicable models EHB CA EHV CA Error detection method Error generating condition Supposed causes corrective action Possible causes Corrective action There is air in the system Purge air Water pressure at pump inlet is too low m Check on the manometer on the unit that there is sufficient water pressure The water pressure must be gt 1 5 bar m Check that the manometer is not broken m Check that the expansion vessel is not broken m Check that the setting of the pre pressure of the expansion vessel is correct refer to the installer reference guide attached in Appendix to this Service Manual on page 23 Part 4 Troubleshooting 68 ESIE13 02 Troubleshooting 1 2 10 The Water Pressure Relief Valve Opens Applicable models EHB CA EHV CA Error detection method Error generating
103. opens fully to avoid overheat operation As suction superheat degree increases due to gas shortage compressor frequency decreases because suction superheat degree is controlled in order to prevent oil to the outdoor heat exchanger from being retained Because of 1 and 2 above evaporator capacity and compressor frequency decrease despite a large difference large load between temperature set by the remote controller and indoor suction temperature resulting that high pressure cannot be maintained and heating capacity becomes unavailable Also a decrease in evaporator capacity frequently puts the system in defrost operation If gas shortage worsens high pressure becomes smaller than saturated pressure equivalent to indoor heat exchanger temperature or indoor suction temperature 161 Part 4 Troubleshooting Additional Checks for Troubleshooting ESIE13 02 6 12 Check No 14 Check for Excessive Refrigerant Charging As criteria for judging whether refrigerant is excessively charged or not refer to the following operating conditions lt Diagnosis of excessive refrigerant charging gt In cooling operation 1 Because high pressure rises due to excessive charging overload control is carried out and capacity tends to run short Considering pressure load compressor discharge pipe temperature is low 3 Subcooled degree of condensate liquid becomes large Therefore temperature of blown air passing through subcoole
104. oper amount refrigerant Is the refrigerant overcharged Conduct refrigerant collection and vacuum drying and then add proper amount refrigerant In heating operation Check items Possible causes Judgment Is the hydro box heat exchanger clogged Visual inspection Is there clogging before or after the EV Check if there is a temperature difference capillary before and after EV capillary Check if the main valve unit of EV operates by noise vibration Is the check valve clogged Check if there is a temperature difference before and after check valve m f YES the check valve is caught Is the HPS normal Check continuity using a tester Is the piping length 5 meters or less Visual inspection Does air enter the refrigerant system Conduct refrigerant collection and vacuum drying and then add proper amount refrigerant Is the refrigerant overcharged Conduct refrigerant collection and vacuum drying and then add proper amount refrigerant Part 4 Troubleshooting 156 ESIE13 02 Additional Checks for Troubleshooting 6 7 In cooling operation In heating operation Check No 7 Evaluation of Abnormal Low Pressure Abnormally low pressure level is mostly caused by the evaporator side The following contents are provided based on field checking of service engineer Further the number is listed in the order of degree of influence Check
105. or between fan motor and PC board is left in disconnected or faulty connector m Fandoes not run due to foreign matters tangled Malfunction of the outdoor inverter PC board m Blowout of fuse 111 Part 4 Troubleshooting Error Codes Outdoor Units ESIE13 02 Troubleshooting Is the supply Voltage within the range 180 to 220 VAC NO gt Ask repair so that supply voltage will be within the normal range Turn OFF the power again and wait for 10 minutes motor connector correctly connected to the outdoor PC board Is the connector X191A of eactor coil LAR correctl connected NO Properly connect the connector Is there any foreign matter around the fan NO Remove the foreign matter Remove the fan motor connector Is the fan NO rotatable easily Replace the fan motor YES esit check the fan motor 9 See also Check No 10 Outdoor Unit Fan Speed Pulse on page 159 Part 4 Troubleshooting 112 ESIE13 02 Error Codes Outdoor Units Is the fan motor normal NO gt Replace the fan motor Is the fuse conductive 1 gt Replace the fuse Properly plug the fan motor connector and then turn ON the power again Does E7 YES appear again Re
106. ox 96 3 4 TIA Hydro box Flow Error 97 3 5 CO Hydro box Flow Sensor Failure sene 100 3 6 Hydro box Domestic Hot Water Tank Temperature too High gt 89 C 101 3 7 Warning AH Tank Disinfection Function Not Completed Correctly 102 3 Table of Contents ESIE13 02 4 Error Codes Outdoor Units 5 Error Codes System 4 1 4 2 4 3 44 4 5 4 6 4 7 4 8 4 9 4 10 4 11 4 12 4 13 4 14 4 15 4 16 4 17 4 18 4 19 5 1 5 2 5 3 5 4 5 5 5 6 5 7 ET Outdoor Unit PCB 103 Abnormal High Pressure Detected by the 5 104 EH Actuation of Low Pressure 106 ES Compressor Motor Lock sss enne 109 ET Malfunction of Outdoor Unit Fan Motor sss 111 Malfunction of Electronic Expansion 114 F3 Malfunctioning in Discharge Pipe Temperature 117 H3 Malfunctioning HPS System 119 HS U3 05 J6 171 48 Thermistor or Related Abnormality Outdoor Unit 121 J Malfunction of Pressure 122 LT Faulty Outdoor PC Board sse 124 LH Radiation Fin Tem
107. perature Increased 126 75 DC Output Overcurrent 128 LB DC Output Overcurrent Instantaneous sss 130 L8 Stall Prevention Time Lag sss 132 LE Malfunction of Transmission System Between Control PCB and Inverter PCB mm EC 134 PT Open Phase or Power Supply Voltage Imbalance 136 PH Malfunction of Radiator Fin Temperature Thermistor 137 Pu Malfunction of Radiator Fin Temperature Thermistor 138 Malfunctions Ut Gas Shortage Malfunction sss 139 ue Abnormal Power Supply Voltage 141 U3 Underfloor Heating Screed Dry out Failure 143 U4 Malfunction of Transmission between Hydro box and Outdoor Unit 144 UF Malfunction of Transmission between Hydro box and Outdoor Unit or Gas c 146 US Malfunction of Transmission between Hydro box and Remote Controller 148 UA Indoor Outdoor Combination Problem 149 6 Additional Checks for Troubleshooting 6 1 Check No 1 Outdoor Unit Checking the Installation Condition 150 6 2 Check No 2 Outdoor Unit Checking the Expansion Valve
108. place the outdoor PC board A1P ERHQ V3 ERLQ V3 Replace the inverter PC board A2P ERHQ W1 ERLQ W1 NO gt There is no problem with the unit An external factor noise etc other than unit failure may be a cause of the malfunction Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 71 FUSE CONDUCTIVE ERHQ011 016 V3 F6U A1P outdoor pc board ERLQ011 016 V3 ERHQO011 016 W1 F7U A2P inverter pc board ERLQO011 016 W1 113 Part 4 Troubleshooting Error Codes Outdoor Units ESIE13 02 4 6 Malfunction of Electronic Expansion Valve Remote controller ES display Method of Method is determined according to the suction pipe superheat degree and electronic expansion valve malfunction opening degree calculated by values of low pressure sensor and suction pipe temperature thermistor detection Malfunction When the following conditions are met for 10 minutes decision conditions m Suction pipe superheat degree 4 C m Minimum electronic expansion valve opening degree m Connector of electronic expansion valve is missing when the power is on Supposed causes m Faulty electronic expansion valve m Faulty solenoid valve m Faulty check valve m Disconnection of electronic expansion valve harness m Faulty connection of electronic expansion valve connector m Faulty each thermistor m Faulty mounting m
109. power supply voltage Including malfunction of KTOR K11R U3 Underfloor heating screed dry out error Can only be reset when in installer level U4 UF Failure of transmission between hydro box and outdoor Transmission between hydro box and outdoor unit unit is not being carried out correctly 1 5 UF Failure of transmission between hydro box and outdoor Transmission between hydro box and outdoor 4 3 unit unit is not being carried out correctly n E or or There is very little or no refrigerant flow within Gas shortage the hydro box U5 Failure of transmission between hydro box and remote Transmission between hydro box and remote controller controller is not being carried out correctly UA Incorrect hydro box connected to the system or unit type connection not confirmed In case of spare part PCB Legend Colour Meaning Error code displays automatically and system stops Inspect and repair it In case of shaded error codes inspection is not displayed The system operates but be sure to inspect and repair it Error code displayed on user interface The system operates but be sure to inspect and repair it Note 1 There is a possibility of open phase power supply check power supply also Part 4 Troubleshooting 78 ESIE13 02 Troubleshooting 1 5 Troubleshooting by LED on the Hydro box PCB Overview Troubleshooting can be carried out by HAP LED green Blinks when normal 3 LED on LED off
110. power switch before connect or disconnect connector or parts damage may be occurred Part 4 Troubleshooting 118 ESIE13 02 Error Codes Outdoor Units 4 8 H3 Malfunctioning HPS System Remote controller display Method of malfunction detection Malfunction decision conditions Supposed causes nm LL The protection device circuit checks continuity in the high pressure switch When there is no continuity in the high pressure switch during compressor stops operating m Incomplete high pressure switch m Disconnection in high pressure switch harness m Faulty connection of high pressure switch connector m Faulty outdoor unit PC board m Disconnected lead wire 119 Part 4 Troubleshooting Error Codes Outdoor Units ESIE13 02 Troubleshooting Is protection HPS connector 1 correctly connected to outdoor unit PC board NO gt Connect correctly Wait for 10 minutes after the unit stops operating then check the following Is there continuity in each protection HPS NO gt Replace HPS with no continuity Resistance in normal operation 10Q or less Is there continuity in lead Replace the lead wire wire Replace the outdoor unit PC board A1P ERHQ V3 ERLQ V3 Replace the inverter PC board A2P ERHQ w1 ERLQ W1 1 Connector symbol ERLQ011 016 V3 ERHQ011 016 V3 X32A A1P ERL
111. ppening Yes gt Adapt the schedule settings so disinfection can work correctly Is tank thermistor faulty Check no 4 Yes gt Change thermistor Part 4 Troubleshooting 102 ESIE13 02 Error Codes Outdoor Units 4 Error Codes Outdoor Units 4 1 Outdoor Unit PCB Abnormality Remote controller display Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Caution Microcomputer checks whether E2PROM is normal E2PROM When E PROM malfunctions when turning the power supply on Faulty outdoor unit PCB Turn the power supply off once and then back on YES Is normal reset possible Turn the power supply off and disconnect the fan motor YES Problem could be caused by external factor noise etc other than malfunction connector from the PCB then turn the power supply on again Is E1 displayed NO gt Replace the outdoor PC board A1P ERHQ V3 ERLQ V3 Replace the control PC board A1P ERHQ W1 ERLQ W1 gt Fan motor check Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 103 Part 4 Troubleshooting Error Codes Outdoor Units 4 2 Abnormal High Pressure Detected by the HPS Remote controller display Method of malfunction
112. r remote controllers when using two remote controllers Troubleshooting 2 Resets indoor unit PCB normally when NO microcomputer normal power supply is turned Indoor unit PC board monitors off temporarily replacement flashing YE B Malfunction could be produced by noise Check the surrounding area and restart operation Is US baal Failure of remote controller constantly PC board or replacement of defective indoor unit PC board gt Problem could be caused by external factor noise etc other than malfunction Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 4 Troubleshooting 148 ESIE13 02 Error Codes System Malfunctions 5 7 UR Indoor Outdoor Combination Problem Remote controller UH display Error generation The error is generated when there is a combination mismatch between indoor outdoor Supposed causes m Incorrect unit model m Option D 04 not confirmed m Functionality of X14A for AB models Troubleshooting Check field setting E 01 compressor type NO Is it according below gt Correct and confirm this setting table in the first 3 minutes after TYES POWER ON Turn space cooling heating AND DHW operation OFF Turn power OFF After 15 sec put POWER ON YES Error again gt Replace outdoor main PCB
113. r servicing and air circulation Make sure the installation site withstands the unit s weight and vibration Make sure the area is well ventilated Make sure the unit is level Make sure that the floor where the unit will be installed is level Make sure walls sensitive to heat e g wood are protected by suitable insulation ONLY operate the gas boiler if a sufficient supply of combustion air is ensured In case of a concentric air flue gas system dimensioned according to the specifications of this manual this is fulfilled automatically and there are no other conditions for the equipment installation room This method of operation applies exclusively m This gas boiler is NOT designed for room air dependent operation Do NOT install the unit in the following places In potentially explosive atmospheres In places where there is machinery that emits electromagnetic waves Electromagnetic waves may disturb the control system and cause malfunction of the equipment In places where there is a risk of fire due to the leakage of flammable gases example thinner or gasoline carbon fibre ignitable dust In places where corrosive gas example sulphurous acid gas is produced Corrosion of copper pipes or soldered parts may cause the refrigerant to leak In bathrooms In places where frost is possible Ambient temperature around the indoor unit should be gt 5 C 1 4 3 Refrigerant NOTICE Make sure refrigerant
114. ressure dBA 48 49 50 4 6 8 Refrigerant Type lt R 410A gt Charge EHYRLQ005 EHYRLQ008 kg 1 45 1 60 Control Expansion valve electronic type N of circuits 1 Refrigerant oil Type lt FVC50K gt Charged volume 0 75 Piping connec Liquid Type Flare connection tions Diameter OD mm 6 35 Gas Type Flare connection Diameter OD mm 15 9 Drain Quantity 2 Type Hole Diameter OD mm 1 15 1 20 Piping length Minimum m 3 Maximum m 30 Additional refrigerant charge kg m 0 02 IF 10m Height difference Maximum m 20 between outdoor unit and indoor unit Defrost method Reverse cycle Defrost control Sensor for outdoor heat exchanger temperature Capacity control method Inverter controlled Standard acces Item Installation manual sories Quantity 1 Part 2 Specifications 48 ESIE13 02 Outdoor Unit Notes 1 See operation range drawing Range increase by support backup heater Range increase by support booster heater or backup heater 2 The sound pressure level is measured via a microphone at a certain distance from the unit It is a relative value depending on the distance and acoustic environment Refer to sound spectrum drawing for more information 49 Part 2 Specifications Outdoor Unit ESIE13 02 Part 2 Specifications 50 ESIE13 02 Part 3 Commissioning See Note on page 6 51 Part 3 Commissioning ESIE13 02
115. rror Codes Outdoor Units ESIE13 02 Graphs Outdoor unit PC board A1P 5V O X17A 4 5 n GND 3 Black g Microcomputer x White A D input 8 5 2 Measure voltage here V2809 T Q d 5 9 a 2 o o E a 5 0 5 0 05 1 15 2 25 3 35 4 V Output voltage V PL 0 57V 0 28 PL detected pressure Mpa V output voltage V Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 4 Troubleshooting 108 ESIE13 02 Error Codes Outdoor Units 4 4 ES Compressor Motor Lock Remote controller display Method of malfunction detection Malfunction decision conditions Supposed causes ra Inverter PC board takes the position signal from UVW line connected between the inverter and compressor and detects the position signal pattern The position signal with 3 times cycle as imposed frequency is detected when compressor motor operates normally but 2 times cycle when compressor motor locks When the position signal in 2 times cycle is detected m Compressor lock m High differential pressure 2 6MPa or more starting m Incorrect UVW wiring m Faulty inverter PC board m Stop valve is left in closed 109 Part 4 Troubleshooting Error Codes Outdoor Units ESIE13 02 Troubles
116. s depending on the heat emitter such situations can be avoided 2 The feasible room temperature dependents on the average heat emitter surface temperature The average heat emitter surface temperature is determined by the temperature difference between the inlet and outlet water temperature of the heat emitter Part 4 Troubleshooting 74 ESIE13 02 Troubleshooting 1 3 Fault diagnosis by Remote Controller Explanation If operation stops due to malfunction error or warning the user interface home screen will indicate the symbol The malfunction code plus a short description of the error is displayed when pushing the button on the user interface In case of a warning the unit will continue operation In case of an error the unit will preventively shut down Attention Some errors can only be reset when in installer level The malfunction code enables you to tell what kind of malfunction caused operation to stop See next pages for malfunction code and malfunction contents 75 Part 4 Troubleshooting Troubleshooting ESIE13 02 1 4 Fault diagnosis Manual Reset in the Memory Explanation In order to reset the malfunction code in the remote controller memory follow actions has to be performed Remark For some malfunction codes it s required to manually reset the malfunction code in the memory before the unit can be restarted Part 4 Troubleshooting
117. se of this This service manual contains all the information you need to carry out the necessary repair and manual maintenance tasks for the Daikin Altherma Hybrid Six parts This service manual consists of an introduction and six parts Part See page Part 1 System Outline 17 Part 2 Specifications 41 Part 3 Commissioning 51 Part 4 Troubleshooting 53 Part 5 Repair 165 Part 6 Maintenance 167 Note Heat Outdoor Manual Contents boiler pump 3 sec unit section tion ECPEN13 729 Daikin Altherma general system x x x hybrid heat pump_tcm135 285966 explanations EEDEN14 729 EHYHBH AV3 EHY technical data book x X HBX AV3 EHYKOMB AA LR tcm13 5 304475 EEDEN14 729 EVLQ CV3 LR tcm1 technical data book x 35 304456 ECPEN13 732_Daikin Altherma engineering guide x x x hybrid heat pump engineering guide tcm135 298162 AD130276 1 EHYKOMB33AA tcm1 CE declaration x x x 35 290423 4P349694 1 tcm135 290654 addendum book for x optional equipment 4PEN349693 1 2013 05 135 29 general safety pre x x x 0662 cautions 4PEN349695 1 tcm135 290651 installation in a nut x x x shell ESIE13 02 Introduction Manual Contents Gas boiler section Heat pump sec tion Outdoor unit 4PEN349587 1A 2013 05 tcm135 2 90364 installation manual 4PEN353067 1 2013 07 tcm135 29 0386 installation and operation manual 4PEN
118. st of 1kWh thermal output produced by the heat pump is equal to the cost of 1kWh thermal output produced by the boiler The break even COP is dependent on the electricity price kWh the gas price kWh and the boiler s thermal efficiency 96 considered as a fixed value independent of flow temperature return temperature and ambient temperature The energy prices are set by the user or installer and can be adjusted Electricity price iR X Necier Break even ECONO Gas price kwh When the heat pump operates at the break even COP the primary energy use to produce 1kWh thermal output by the heat pump is equal to the primary energy use to produce 1kWh thermal output by the boiler The break even COP is dependent on the Primary Energy coefficient the amount of primary energy input that is needed to generate a kWh of electricity here assumed to be 2 5 and the boiler s thermal efficiency COP Break even ECO Primary Energy coefficient X Tus 31 Part 1 System Outline Wiring Diagrams ESIE13 02 Wiring Diagrams 3 1 PCB Description 3 1 1 Gas condensing boiler h 230 V 50 Hz o 4 o o o Co T Eon VANS Sa 38 Part number Description a Earth
119. stallation m Excess charge of refrigerant m Air intrudes into refrigerant system m Flushing noise due to refrigerant shortage Sound of shoo 63 Part 4 Troubleshooting Troubleshooting ESIE13 02 Troubleshooting Caution Does the noise generate with YES Installation work side vibration of whole ceilings and walls Does the noise generate with YES vibration of unit mounting section NO Is the piping Continuous secured Power supply side YES Does the fan contact with YES shoo generates just after operation start or stop or defrosting start or stop NO MA other parts NO Does YES the pipe contact with casing NO Is the noise flushing YES Creak during heating and after operation stop NO sound from pressure reducing valve or capillary tube Is this an impact noise at the start end of defrosting NO Excess charge of refrigerant Air intrudes into refrigerant system Flushing noise due to refrigerant shortage Sound of shoo YES YES Correction of installation Reinforcement for ceilings or walls Insert shock absorber in mounting section or strengthen the mounting section Normal The sound is flushing noise of gas refrigerant insi
120. stalled in any way other than as described in the fitting instructions Any misuses or unauthorized modifications to the appliance flue or associated components and systems could invalidate the warranty The manufacturer accepts no liability arising from any such actions excluding statutory rights It is NOT allowed to combine flue system parts purchased from different suppliers 14 ESIE13 02 Introduction 1 4 9 Local legislation Local regulations It is law that all gas appliances are installed by a gas safe registered competent engineer and in for UK accordance with the following recommendations Current Gas Safety Installation and Use Regulations All current building regulations Building Standards Scotland Consolidated This appliance MUST be installed in accordance with the Gas Safety and Use Regulations current Building Regulations Building Standards Scotland 1 5 813 Installation of Gas Appliances Ireland IEE Wiring Regulations BS 7671 Health and Safety Document No 635 Electricity at Work Regulations and Local Water Authority Bye Laws UK Water Regulations and Bye Laws Health amp Safety The installation MUST comply with the following British Standards codes of practice BS 5440 Flues and Ventilation for gas appliances of rated input NOT exceeding 70 kW Part 1 Flues BS 5440 Flues and Ventilation for gas appliances of rated input NOT exceeding 70 kW Part 2 Air Supply BS 5546 20
121. stor into voltage with CT1 DC malfunction current sensor detection Malfunction When overcurrent has run to power transistor decision conditions Actuated even by instantaneous overcurrent Supposed causes m Faulty compressor coil disconnection poor insulation Compressor startup malfunction mechanical lock m Faulty inverter PC board m Instantaneous fluctuation of power supply voltage m Faulty compressor if bearing is scratched m The stop valve is left in closed Part 4 Troubleshooting 128 ESIE13 02 Error Codes Outdoor Units Troubleshooting Check the installation conditions Is the stop valve open Is the compressor coil disconnected or is the insulation defective NO Open the stop valve YES Replace the compressor connection between the Turn the main power supply off and then disconnect the compressor and inverter Continuity check in the power transistor IGBT Is the continuity normal Is the inverter output voltage for each phase after turning on again 1 U V V W W U generated approximately at the same increasing speed NO Replace the inverter PC board A1P ERHQ V3 ERLQ V3 A2P ERHQ W1 ERLQ W41 NO gt Replace the inverter PC board A1P ERHQ V3 ERLQ V3 When operating compressor A2P ERHQ W1 ERLQ W1 with compressor
122. t 1 System Outline 28 ESIE13 02 Functionality Return temperature below 18 DURING DEFROST 1 i i 0 jx boiler operation 1s r heatpump operation defrosting 0 return temp hysteresis of 10 25 C gt Time NOT DURING DEFROST start up of heatpump mode return lt 15 heatpump operation 0 boiler operation gt Time NOT DURING DEFROST heatpump mode return lt 15 C 1 0 1 0 boiler 18 15 gt Time 29 Part 1 System Outline Functionality ESIE13 02 Economical mode capacity shortage 1 heatpump o 4 0 L boiler leaving water setpoint leaving vet iov water capacity shortage of the heatpump o S S S Time 13 min Equilibrium point operation of the equilibrium point is independant of ecological or economical operation E 0 boiler operation allowance boiler boiler operation possible i operation not allowed 0 ambient temp Fr 1 0 Time Equilibrium point and capacity shortage 1 heatpump m p 0 Ls boiler leaving water setpoint gt Time 13 min 501 5 00 1 equilibrium enabled Part 1 System Outline 30 ESIE13 02 Functionality Economic Ecologic When the heat pump operates at the break even COP the co
123. t of a Building Regulations Compliance Certificate Buiding Regulations Notification Number if applicable CONTROLS rick the appropriate boxes Time and Temperature Control to Heating Room Thermostat and Programmable Load Weather Optimum Start Programmer Timer Room Thermostat Compensation Control Time and Temperature Control to Hot Water Cylinder Thermostat and Programmer Timer Combination Boiler Heating Zone Valves Fitted Not Required Hot Water Zone Valves Fitted Not Required Thermostatic Radiator Valves Fitted Not Required Automatic Bypass to System Fitted Not Required Boiler Interlock Provided ALL SYSTEMS The system has been flushed and cleaned in accordance with BS7593 and boiler manufacturer s instructions Yes What system cleaner was used What inhibitor was used Quantity litres CENTRAL HEATING MODE Measure and record Gas Rate m hr OR ft hr Burner Operating Pressure if applicable mbar OR Gas Inlet Pressure mbar Central Heating Flow Temperature Central Heating Return Temperature C COMBINATION BOILERS ONLY Is the installation in a hard water area above 200ppm Yes No If yes and if required by the manufacturer has a water scale reducer been fitted Yes No What type of scale reducer has been f
124. te or not depending on the active operation mode heat pump only gas condensing boiler only or hybrid heat pump and gas condensing boiler HP hydro box Wall hung condensing boiler Outdoor unit jii Part 1 System Outline ESIE13 02 Description 1 2 Components and Connections 1 2 1 Gas condensing boiler Item Description Item Description a Gas valve k Air supply cap Boiler control panel Flue pipe adapter use ONLY in combination with the accompanying elbow in flue sets c Sensor S1 m Connection block terminal strip X4 d Sensor S2 n Condensate drain pan e Fan Hot water sensor 53 f Flow sensor p Condensate S3 g Space heating pressure sensor q Heat exchanger h Mains lead 230 V AC without plug Operating panel and read out stripped i Manual air bleed S lonisation ignition electrode j Sight glass t Position of data plate 19 Part 1 System Outline Description ESIE13 02 1 2 2 Hydro box Item Description a Gas in b Cold water in Refrigerant gas connection d Refrigerant liquid connection e Heating return f Heating flow g Hot water out Part 1 System Outline 2
125. the conditions of FTU F2U Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 4 Troubleshooting 142 ESIE13 02 Error Codes System Malfunctions 5 3 Underfloor Heating Screed Dry out Failure Remote controller u3 display Method of An interruption during the underfloor heating screed dry out program is detected malfunction detection Malfunction Screed dry out program was interrupted incorrectly ex by accident by end user decision conditions Supposed causes m Another error U3 only generated when other error is solved m Operation OFF button pushed m Power failure Troubleshooting m Check if dry out schedule was interrupted m f schedule was interrupted by mistake reset error and continue dry out again m f schedule was interrupted deliberately reset error and start operation dry out is responsibility of the installer according to instructions of screed manufacturer Attention US error can only be reset in installer level to avoid that the installer is not informed that the dry out schedule was interrupted 143 Part 4 Troubleshooting Error Codes System Malfunctions ESIE13 02 5 4 Malfunction of Transmission between Hydro box and Outdoor Unit Remote controller display Error generation Supposed causes Troubleshooting UY T
126. to m Thetype of gas quoted on the type identification plate or on the setting type identification plate m The quitted gas pressure Operate the unit ONLY with the gas type and gas pressure indicated on these type identification plates Installation and adaptation of the gas system MUST be conducted by m Personnel qualified for this work n compliance with valid gas installation related guidelines m In accordance with applicable regulations of the gas supply company m In accordance with local and national regulations Boilers that use natural gas MUST be connected to a governed meter Boilers that use liquid petroleum gas LPG MUST be connected to a regulator The size of the gas supply pipe should under no circumstance be less than 22 mm The meter or regulator and pipe work to the meter MUST be checked preferably by the gas supplier This is to ensure that the equipment works good and meets the gas flow and pressure requirements DANGER A If you smell gas m Call immediately your local gas supplier and your installer m Call the suppliers s number on the side of the LPG tank if applicable m Turn off the emergency control valve at the meter regulator m Do NOT turn electrical switches ON or OFF m Do NOT strike matches or smoke m Putout naked flames m Open doors and windows immediately m Keep people away from the affected area 1 4 8 Gas exhaust Flue systems must NOT be modified or in
127. ufficient Yes Water circuit is sufficiently airpurged Airpurge valve is open Yes Is the water filter clogged dirty No External static pressure is in range of the hydro box pump range Yes Domestic hot water tank is installed Yes Correct operation of the 3 way valve Yes Tank type is EKSWWU EKHWSU Yes 2 way valve on the flow inlet operates correctly Yes Y B No Open the shut OFF valve Make sure that the No pump signal is displayed _ gt A on the interface 2 No Charge additional water to the system No gt Purge the water circuit Open the airpurge valve Yes Clean the water filter No gt Correct water circuit No B 3 way valve is correct connected No gt No No B No Change the 2 way valve Check the 3 way valve position Replace in case required Connect the wires correctly according the installation manual Part 4 Troubleshooting 98 ESIE13 02 Error Codes Hydro box Malfunction of the backup heater Check the thermal protector Q1L of the backup heater Flow error occured during defrost operation Yes gt No gt Check the backup heater fuse F1B Is there 5V when the pump is running between pin 3 amp 4 No Replace PCB check the flowsensor Yes Check flow signa
128. urn off power switch before connect or disconnect connector or parts damage may be occurred 137 Part 4 Troubleshooting Error Codes Outdoor Units ESIE13 02 4 19 FU Remote controller display Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Caution nction of Radiator Fin Temperature Thermistor Check whether set value written in EPROM at factory or set value of capacity setting adaptor for replacement is the same as outdoor unit capacity When the set value on differs from the outdoor unit capacity or a capacity setting adaptor except for PC board applicable models is installed Malfunction decision is made only when turning the power supply on m Improper set value of E PROM m Improper capacity setting adaptor m Faulty outdoor unit PC board capacity setting adapter CN26 connected to outdoor unit PC board Connect the adapter for the applicable model Make sure that the combination of connected capacity setting adapter gt If incorrect correct the combination CN26 is correct Capacity setting adapter is not connected at factory Capacity is written in E7PROM Capacity setting adapter is required only when the PC board was replaced with spare PC board Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred
129. visible Check if there is a tank connected Then setting A 2 2 1 should be set to yes The RT screen is not visible Check setting A 2 1 to see if unit control method is set to Room Thermostat control The ext RT screen is not visible Check setting A 2 1 to see if unit control method is set to ext Room Thermostat control The LWT screen is not visible 1 Check setting A 2 1 to see if unit control method is set to LWT 2 Check 7 4 1 user settings available home page if LWT screen is enabled 71 Part 4 Troubleshooting Troubleshooting ESIE13 02 1 2 13 Domestic Hot Water Capacity Shortage at Low Outdoor Temperatures Applicable models Error detection method Error generating condition Supposed causes corrective action EHB CA EHV CA ERHQ011 016B CA ERLQ004 016CA Possible causes Corrective action The settings related to domestic hot water oper ation at low Ta space heating priority 5 02 and space heating priority temperature 5 03 are not set or not optimized according to the site application Optimize the settings related to domestic hot water operation at low Ta space heating priority 5 02 and space heating priority temperature 5 03 according to the site application 5 02 1 5 03 5 01 2 3 5 C 1 In case the Daikin Altherma LT has no spare capacity compare to the space he
130. y A memory chip that holds its content without power It can be erased either within the computer or externally and usually requires more voltage for erasure than the common 5 volts used in logic circuits It functions like non volatile RAM but writing to EEPROM is slower than writing to RAM Supposed causes The possible cause is a malfunctioning hydro box PCB Troubleshooting Switch the power off and on again to restart Normal reset No Replace hydro box PCB Yes The malfunction may be caused by an external factor rather than damaged parts Locate the cause and correct the situation Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 4 Troubleshooting 94 ESIE13 02 Error Codes Hydro box 3 2 89 Water Heat Exchanger Frozen User interface display Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Caution 89 The freeze up protection control operation halt is activated during cooling operation according to the temperature detected by the hydro box heat exchanger thermistor Freeze up protection When the hydro box heat exchanger temperature is below 0 during cooling operation m Detection error due to faulty hydro box heat exchanger thermistor m Detection error due to faulty hydro box PCB Check No 04 Hydro box heat exchan
131. y also the power supply to the outdoor unit is switched off Overview The described checks must be executed at least once a year 1 Water pressure Check if the water pressure in the hydro box is above 1 5 bar If necessary add water 2 Water filter Clean the water filter 3 Water pressure relief valve Check for correct operation of the pressure relief valve by turning the red knob on the valve counter clockwise m If you do not hear a clacking sound contact your local Daikin dealer m n case the water keeps running out of the unit close both the water inlet and outlet shut off valves first and then contact your local Daikin dealer 4 Pressure relief valve hose Check that the pressure relief valve hose is positioned appropriately to drain the water If the optional drain pan kit is installed make sure that the pressure relief valve hose end is positioned in the drain pan 5 Backup heater vessel insulation cover Check that the backup heater insulation cover is fastened tightly around the backup heater vessel 6 Domestic hot water tank pressure relief valve field supply Applies only to installations with a domestic hot water tank Check for correct operation of the pressure relief valve on the domestic hot water tank 7 Domestic hot water tank booster heater Applies only to installations with a domestic hot water tank It is advisable to remove lime buildup on the booster heater to extend its life span especially in regio

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