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SERVICE MANUAL.book

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1. late type heat exchanger REFRIGERANT WATER earth leakage circuit breaker thermal protector backup heater RiT A3P x ambient sensor On OFF thermostat RiT A9P ambient air sensor patel after BUH temperature sensor external sensor floor or ambient R4T AQP R5T A1P RST AQP R6T AQP rine leaving water RIOT J eat sink thermistor umidity sensor outlet water heat temperature sensor LWC ambient sensor user interface discharge sensor refrigerant liquid temperature sensor suction sensor M n V ct inlet water temperature sensor EWC i E E a a 2 phase sensor Tx x DHW tank temperature sensor brine entering water external indoor ambient thermistor j oO rine flow switch igh pressure switch referential kWh rate PS contact S S electrical meter pulse input 1 electrical meter pulse input 2 S6S S9S digital power limitation inputs SS1 A4P selector switch SV SV oJ fas 1 R ower supply transformer H O GBT power module a E a r k backup heater connector E A terminal strip connector noise filter ferrit core Z1F Z5F noise filter Translation can be found in x optional the installation manual field supply 2 Wiring diagrams Page 157 Ground source heat pump ESIE13 03 Part 5 Appendix 2 Wiring diagrams 2 2 Wiring diagram 2 Figure 72 Wiring diagram 2 PCB A1P A2P A4P A amp P Remote
2. Incorrect setting of space heating OFF temperature setting 4 02 Preferential kWh rate power supply settings and electrical connections do not match 3 Symptom based troubleshooting No action unit cannot operate when ambient temperature is above 35 C Check brine in temperature possible via installer level of the user interface and compare with the freeze up temperature Tf setting A 04 Confirm if space heating operation or domestic hot water operation is activated on user interface Set date time according to operation man ual instructions Check Daylight Saving Time settings Check if setting C 07 leaving water con trol room thermostat control ext room thermostat control is in set according to the application Check if setting of user interface location user menu A 2 1 B at unit in room is set correctly Check if setting space heating OFF tem perature setting 4 02 is correct keep at 39 C Check preferential kWh rate power supply settings and electrical connections Corrective action If required change brine mixture and program freeze up temperature accordingly Activate space heating or domestic hot water opera tion on the user interface Set date time according to operation manual instruc tions Set Daylight Saving Time according to operation manual Root cause category component electrical Deviation of brine entering RST A9P thermistor
3. Possible cause Check Corrective action Faulty refrigerant liquid thermistor R3T Check thermistor R3T see page 57 Replace thermistor R3T see page 141 or A1P hydro PCB A1P hydro PCB see page 91 2 7 EC Domestic hot water temperature error Trigger Effect Reset R5T A1P water tank thermistor detects Unit will continue operating Auto reset when trouble is solved temperature above 89 C Possible cause Check Corrective action Increased water temp by external heat Check if another heat source is installed Correct hydraulic field circuit Refer to the source on the same water circuit Installer Reference Guide Faulty water tank thermistor R5T hydro Check thermistor R5T see page 57 Replace thermistor R5T see page 141 or PCB A1P hydro PCB A1P see page 91 2 8 E1 Refrigerant brine PCB abnormality Trigger Effect Refrigerant brine PCB A9P detects EEP Unit will stop operating Via user interface ROM is abnormal Possible cause Check Corrective action Faulty refrigerant brine PCB A9P Check if the alive led is blinking in regular If not blinking in regular intervals replace intervals the PCB External factor e g electrical noise Check for source which could cause elec cause when error is reset after power trical interference reset and error happens again after awhile Page 22 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troublesho
4. 2 Attach a pull line 5 of approximately 2 meter to the electronic expansion valve wire 4 3 Cut the tie wraps 6 4 While guiding the pull line 5 through the grommet 3 pull the electronic expansion valve wire 4 until the pull line 5 surfaces at the heat pump module 5 Detach the pull line 5 from the electronic expansion valve wire 4 Figure 55 Replacing the electronic expansion valve K1E electromagnet T 6 3A 250V dinari 1 t 7 i 1 X21A 4 Electronic expansion valve wire 2 A9P PCB 5 Pull line not illustrated 3 Grommet 6 Tie wrap not illustrated 6 Cut the tie wrap 2 7 Remove the expansion valve electromagnet 1 from the electronic expansion valve 8 Remove the expansion valve electromagnet 1 Page 134 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Figure 56 Replacing the electronic expansion valve K1E electromagnet 1 Electronic expansion valve electromagnet 3 Electronic expansion valve wire 2 Tie wrap Installation 1 Proceed in reverse order 2 2 22 Replacing the refrigerant high pressure sensor 2 2 22 1 Preliminary actions 1 Switch off the Daikin Altherma GSHP via the user interface 2 Remove the switch box cover refer to Removing the switch box cover on page 87 3 Open the front sound insulation refer to Opening the sound insulation of the heat pump module front side only
5. Confirm if space heating oper Activate space heating or ation or domestic hot water domestic hot water operation operation is activated on user on the user interface interface Root cause category parameter setting Displayed date time is wrong e Not set date time after Check date setting and con Set date time according to schedules not correctly exe initial startup tent of schedules operation manual instructions cuted e No power supply for more than 48 hours Displayed date time is wrong Daylight Saving Time not set Check Daylight Saving Time Set Daylight Saving Time schedules not correctly exe correctly settings according to operation man cuted ual Schedules not activated Schedules were not con Check schedules on the user Set schedule according to firmed refer to schedule set interface user reference guide tings Holiday setting active Holiday setting is activated in Check holiday settings Set holiday settings correctly the user interface Backup heater operation disa Setting backup heater opera Check setting 4 00 Change setting 4 00 to 1 bled tion mode 4 00 is set to 0 disable Second step 6 kW of the Setting enable backup heater Check setting 4 07 Change setting 4 07 to 1 backup heater is not allowed step 2 4 07 is set to O not allowed Backup heater equilibrium Setting equilibrium tempera Check setting 5 01 Change setting 5 01 to O or point was
6. E1 Refrigerant brine PCB abnormality 0 2 0 0 cecccecceeeeeeeeseeeeeeeeeeeeeeeeeeeeeseeeeeeseeeeeeesseeeeessesseeeessageeeeasaaeeees 22 2 9 ES High pressure abnormality eisica sas ccwavecveicaescuvalennliesvadslesiesswesucwand la suas daiivesan ves Ousadiedersn cetewedaa vein yenaeree dain 23 2 10 E5 Compressor Motor lOCK ccccccccccceeecccceeececeeececeececeecesseeeeeeecessueeesaeeesseeeessueeeesuaeeesaueeeesaeeesaeeeesaneees 23 211 ed Bime NOW CUPOl eiai a a e E cutee leds daceeseree ences 23 2 12 E9 Expansion valve abnormality sccseniinuraicntendasctendedeiartoninasiuasdaienccdestaanenelavisabtensnchendetuassdiueslaueisbrantausdeniudend 24 2 13 F3 Discharge pipe temperature control ccc cecccceecceeeeeeeeeeeeeeeeeeeeeeeeeaeeeeseeeeseeeeseeeeseueeeeseeeeseeeseeeeaases 25 2 14 HC Domestic hot water temperature error ssennesnnnnsnnnnnninnnrrnrrrnerrrnrrrrsrrrrrrrerrrrnarrrnrrrrenirsrrnrrnnrrnsnerni 25 2 15 H0 01 Brine NOW SWICN EIrOT ecocscedtocie loca veccenseedastcnendsndecmesueceontesdeslniatennsetonsebeteeegeaeteteetechaiednnesoetandewareetenset 25 2 16 H1 Optional temperature sensor error indoor ambient nnnnnsennnesnnnesnsnnnnrrnrrnesrrrrnsrrnnnsnrrresrrrenssrrreen 26 2 17 H3 High pressure switch system abnormality cccccccccceeeeeeeeeeeeeeeeeeeeeeeeaeeeeeaaeeeeseeeeesaeeeesaeeeesaeeeesaaeees 26 2 18 H9 Outdoor
7. 8 Pull the Daikin Altherma GSHP from the wall to gain access to the rear panel 2 2 1 2 Procedure Removal 1 Loosen and remove the 8 screws 1 that fix the lower rear panel 2 2 Remove the lower rear panel 2 while guiding the brine drain hose 3 and the domestic hot water drain hose 4 through the Opening in the lower rear panel 2 Page 90 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Figure 12 Removing the lower rear panel 1 Screw 3 Brine drain hose 2 Lower rear panel 4 Domestic hot water drain hose Installation 1 Proceed in reverse order 2 2 2 Replacing a PCB in the switch box WARNING Electrical shock hazard Remove power from the Daikin Altherma GSHP before removing the switch box cover Do not touch terminals 2 2 2 1 Preliminary actions 1 Switch off the Daikin Altherma GSHP with the field supplied circuit breaker 2 Remove the front panel refer to Removing the front panel on page 83 3 Remove the switch box cover refer to Removing the switch box cover on page 87 2 2 2 2 Procedure replacing the A1P PCB Removal 1 Unplug connectors X33A 1 and X85A 2 from the A1P PCB 5 2 Loosen and remove the 2 screws 3 that fix the fixation plate 4 3 Detach the right side of the fixation plate 4 4 Flip the fixation plate 4 5 Unplug all connectors from the A1P PCB 6 Carefully pull the A1P
8. Possible cause Corrective action Faulty outdoor air thermistor R1T refrig Check thermistor R1T see page 57 Replace thermistor R1T see page 141 or erant brine PCB AQP Remark also check the LC filter connec PCB AQP see page 94 tion between the X5M terminal and the PCB AQP 2 19 J1 High pressure sensor abnormality Trigger Effect Reset High pressure sensor detects an abnor Unit stops operating Auto reset mal value for 3 minutes gt 4 5 MPa or lt 0 05 MPa Possible cause Check Corrective action Faulty high pressure sensor refriger Check high pressure sensor see Replace the high pressure sensor see ant brine PCB AQP page 69 page 138 or PCB AQP see page 94 Page 26 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 2 Error code based troubleshooting 2 20 J3 Discharge thermistor abnormality Trigger Effect Reset Discharge thermistor detects an abnormal Unit stops operating Auto reset when problem is solved value open or short circuit Possible cause Check Corrective action Faulty discharge thermistor R2T refrig Check thermistor R2T see page 57 Replace thermistor R2T see page 141 or erant brine PCB AQP PCB AQP see page 94 2 21 J5 Suction thermistor R3T abnormality Trigger Effect Reset Suction thermistor detects an abnormal Unit stops operating Auto reset when problem is solved value
9. aos S1PH P gt Switch box Supply M3P i BRINE PUMP K1E Brine flow switch Backup heater as 3 kW 9 kW 2 Wiring diagrams 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 5 Appendix 3 Piping diagram 3 Piping diagram Figure 75 Piping diagram INSIDE OF UNIT FACTORY INSTALLED PRESSURE I I PRESSURE SAFETY I I I I I I I sy2 SAFETY GAUGE PG2 I I Y FILTER heat sink 7 l inverter PCB I I FI2 PEL PE JEEN l X drain o a X drain DR1 S E DR3 To Space Heating Circuit Depicted is example for complete installation requirements refer to installation manual L B1PH S1PH 1 BLOW T To DHW circuit FIELD SUPPLIED Z222 high high rt lt T I BLOW pressure pressure RIT R2T M3S I lo o R5T E SHUT OFF S1L BRINE al outsnor COMPRESSOR R2T sensor switch C indoor WATER indoor sy i a OFF PUMP PUMP E1H E2H BiL VALVE VALVE t t gt t gt E 7 lt N I flow BACK UP flow rT Tt 2 me XXH ee e BACKUP e la RR BO EEE ee eee eee THH A e Li switch HEATER sensor 7X Ha TE T MUFFLER lt tt l ANAVA MU i l 5 I I I I E 11 I FIELD SUPPLIED l ee a ce cc gt G i SS Do p Vy I FILLING VALVE l SAFETY i tot l eS STE ee ee I EXPANSION EXPANSION vee a I 4 VESSEL PHE1 PHE2 VESSEL tod l i PLATE PLATE 5 E iol HEAT HEAT DHW 3 i a EXCHANGER EXCHANGER TANK fle rod Evaporator Condenser e M E
10. hydro PCB A1P Check thermistor R2T see page 57 Replace thermistor R2T see page 141 or hydro PCB A1P see page 91 Faulty backup heater contactors sticking Check backup heater control contactors Replace the contactor s or hydro PCB K1M K2M or hydro PCB A1P K1M K2M see page 53 A1P see page 91 2 45 80 R4T entering water thermistor abnormality Trigger Effect Reset Thermistor detects an abnormal value Unit will stop operating Auto reset when problem is solved open or short circuit Possible cause Check Corrective action Faulty entering water thermistor R4T Check thermistor R4T see page 57 Replace thermistor R4T see page 141 or A1P hydro PCB A1P hydro PCB A1P see page 91 2 46 81 Leaving water thermistor R1T abnormality Trigger Effect Thermistor detects an abnormal value Unit will stop operating Auto reset when problem is solved open or short circuit Possible cause Check Corrective action Faulty leaving water thermistor R1T Check thermistor R1T see page 57 Replace thermistor R1T see page 141 or hydro PCB A1P hydro PCB see page 91 13 01 14 Version 1 0 DAIKIN Page 35 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 3 Symptom based troubleshooting 3 Symptom based troubleshooting By deeply analysing the system s components and logic Daikin offers enhanced symptom based troubleshooting To provide the best troubleshooting efficiency
11. on page 87 4 Remove the lower rear panel refer to Removing the lower rear panel on page 90 5 Recover the refrigerant refer to Refrigerant Handling on page 84 6 Place the brine expansion vessel next to the Daikin Altherma GSHP refer to Replacing the brine expansion vessel on page 122 7 Remove the insulation from the compressor refer to Replacing the compressor on page 117 13 01 14 Version 1 0 7 DAIKIN Page 135 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures 2 2 22 2 Procedure Removal INFORMATION The refrigerant high pressure sensor wire is replaced with the refrigerant high pressure sensor A pull line must be attached to the refrigerant high pressure sensor wire before removing the wire 1 Unplug connector X17A 1 from the A9P PCB 2 2 Attach a pull line 5 of approximately 2 meter to the high pressure sensor wire 4 3 Cut the tie wraps 6 4 While guiding the pull line 5 through the grommet 3 pull the high pressure sensor wire 4 until the pull line 5 surfaces at the heat pump module 5 Detach the pull line 5 from the electronic expansion valve wire 4 Figure 57 Replacing the refrigerant high pressure sensor 1 1 X17A 4 High pressure sensor wire 2 A9 PCB 5 Pull line not illustrated 3 Grommet 6 Tie wrap not illustrated 1 Loosen and remove the 4 screws 1 that fix the bracket 2 on the rear side 2 Remov
12. 1 cc cccccceccceecccececeeeceeeceueecseeceuecaueesauecauecaueesaeeseecuessueeseeeeseessueesaeessass 113 Replacing the water pUMD T sed sa remceicta goed eecientaseeeircaaelamentuaceesiee wens Eana AREER EARE EEA AAAA Akaa AeA 114 Replacing the water DUMD 2 susissswinindeens direan a n na a a eaa eni D AE E EEEE EDE AE Eaa 115 Replacing the water pump 3 sisincoecvnntasdnoradactasdedsencadinnumnsdtinanncsiaucenjnavanddincaysddeend sanpcadsemoddxinabandmed neneodanteckiedenesuadsbeaniices 116 Replacing the water pump 4 ea rsercctssnewestdte wcne sericue exh sendnds nmdeeaiornndsivaess yeinedxe Gan ndesdsue de anatdacee ance vesveunceidan salen edduicedeaieeveden 117 Water pump wire strain relief siccdsisice oranctatisinnesncabiendauindasknennnmasteldvne nicbbi de hddcawaedunaai and dadmunbuudnasdadenneeeentavecesedtaadedawosaagaeses 117 Replacing ING Compresso T sassis aen i oats oie ce sass E E EET a paisa imei uncom ct ees ENA 118 Replacing the Compressor 2 scene ccescnasaesuacseacetinantiededtassanicsnduiensncdadsiedsansuoddemesesdedsne sanisbmvetedeedesinded ein AREA KADNA 119 Replacing iNe CONIOIES SON g acacia parade te nA a E A EE a T NEEE EAA 119 Replacing a ome 6 1 soto 6 aia eee ene en en ee ee ee eee eee ee 120 Replacing the water expansion VESSEL cccssccsseeceeeceneceucecueecaueceuecsuecsueeceeeceaeesaeeceuessueesaescaeeecueessesssueesseessesseas 121 Replacing the brine expansion vessel cccc
13. 3 Remove the electromagnet from the expansion valve K1E 13 01 14 Version 1 0 7 DAIKIN Page 71 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 4 Component checklist 4 Slide the magnet tool part N 9950038 and gently rotate the magnet to manually operate the expansion valve K1E clockwise closing and counterclockwise opening 5 If it is not possible to open the expansion valve K1E with the magnet the expansion valve K1E is blocked and the expansion valve K1E body must be replaced refer to Replacing the electronic expansion valve K1E body on page 131 Electrical check 1 Switch off the Daikin Altherma GSHP via the user interface 2 Remove the switch box cover refer to Removing the switch box cover on page 87 3 Disconnect the connector X21A from PCB A9P 4 Measure the 4 electromagnet windings X21 red white red orange red yellow and red blue All windings must read 45 Ohm White COM Red Orange Yellow Blue 5 If one or more winding measurements fail replace the expansion valve K1E electromagnet refer to Replacing the electronic expansion valve K1E electromagnet on page 133 4 14 Thermal protector backup heater Q1L Technical specification Description The thermal protector backup heater Q1L is triggered if the temperature The thermal protector backup heater Q1L is a exceeds 92 C The thermal protector backup heater Q1L will cut power supply safety component that protects
14. 4 3 Water pump Installation CAUTION When installing the water pump wire 2 twist the water pump wires 2 around the frame beam 1 behind the switch box to ensure strain relief Figure 37 Water pump wire strain relief 1 Frame beam 2 Water pump wire 1 Proceed in reverse order 2 Fill the water circuit refer to To fill the space heating circuit in the Daikin Altherma ground source heat pump Installer reference guide 3 Purge the water circuit refer to 9 3 Air purge function on the space heating circuit in the Daikin Altherma ground source heat pump Installer reference guide 2 2 13 Replacing the compressor 2 2 13 1 Preliminary actions 1 Switch off the Daikin Altherma GSHP via the user interface 2 Open the front sound insulation refer to Opening the sound insulation of the heat pump module front side only on page 87 3 Remove the lower rear panel refer to Removing the lower rear panel on page 90 4 Recover the refrigerant refer to Refrigerant Handling on page 84 5 Place the water expansion vessel next to the Daikin Altherma GSHP refer to Replacing the water expansion vessel on page 121 6 Place the brine expansion vessel next to the Daikin Altherma GSHP refer to Replacing the brine expansion vessel on page 122 13 01 14 Version 1 0 9 DAIKIN Page 117 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures 2 2 13 2 Procedure
15. A 8 3 02 R W 1 3 C A 8 3 03 R W 4 A 8 8 07 R W 18 A 8 3 04 R W 2 A 8 8 08 R W 20 A 8 3 05 R W 1 A 8 8 09 What is the desired comfort main LWT in heating R W 9 01 9 00 step 1 C A 8 3 06 What is the maximum desired room temperature in heating R W 18 30 C step A 3 2 4 55 C 30 C A 8 8 0A What is the desired eco main LWT in heating R W 9 01 9 00 step 1 C A 8 3 07 What is the mimimum desired room temperature in heating R W 12 18 C step A 3 2 4 45 C 12 C A 8 8 0B R W 13 A 8 3 08 R W 35 A 8 8 0C R W 10 A 8 3 09 R W 15 A 8 8 0D R W 10 A 8 4 00 What is the BUH operation mode R W 0 Limit A 8 9 00 What is the maximum desired LWT for main zone in heating R W 37 65 C step 1 C 1 Enable 65 C 2 Only DHW A 8 9 01 What is the mimimum desired LWT for main zone in heating R W 15 37 C step 1 C A 8 4 01 R O 0 24 C A 8 4 02 Below which outdoor R W 14 35 C step 1 C A 8 9 02 R W 22 temperature is heating allowed 35 C A 8 9 03 R W 5 A 8 9 04 R W 1 A 8 4 03 R W 3 A 8 9 05 What is the mimimum desired LWT for add zone in heating R W 15 37 C step 1 C A 8 4 04 R W 2 24 C A 8 4 05 R W 0 A 8 9 06 What is the maximum desired LWT for add zone in heating R W 37 65 C step 1 C A 8 4 06 R W 0 65 C A 8 9 07 R W 5 i i f i This setting is not applicable for this unit Do not change the d
16. C Thermostat ON conditions Thermostat ON conditions Confirm thermostat on conditions depend Change setpoint if for domestic hot water for domestic hot water ing on the selected domestic hot water required operation are not met operation are not met DHW control type setting 6 0D 1 Reheat only In case reheat setpoint is 55 C or lower domestic hot water will go thermo off when reheat setpoint setting 6 0C is reached Domestic hot water will go thermo on when reheat setpoint setting 6 OC 10 C is reached In case reheat setpoint is higher than 55 C domestic hot water will go thermo off when reheat setpoint setting 6 OC setting 7 00 is reached Domestic hot water will go thermo on when reheat setpoint setting 6 0C setting 7 01 is reached Schedule only domestic hot water will go thermo off when setpoint setting 6 OA or 6 0B is reached Domestic hot water will only go thermo on at time of schedule demand Schedule reheat combination of 1 and 2 Out of operation range Brine entering temperature No action unit cannot operate when brine temperature not lower than freezing tem brine temperature becomes too low risk OK perature Tf 6 5 K will of freezing stop the unit 13 01 14 Version 1 0 9 DAIKIN Page 41 Ground source heat pump ESIE13 03 Part 2 Troubleshooting Possible failures Out of operation range ambient temperature above 35 C Acti
17. Ground source heat pump ESIE13 03 Part 1 Introduction 2 Safety precautions WARNING Always recover the refrigerants Do NOT release them directly into the environment Use a vacuum pump to evacuate the installation Take sufficient precautions in case of refrigerant leakage If refrigerant gas leaks ventilate the area immediately Possible risks e Excessive refrigerant concentrations in a closed room can lead to oxygen deficiency e Toxic gas may be produced if refrigerant gas comes into contact with fire Where applicable pump down the system and close the service valve before leaving the site if leak was not repaired to avoid further leaking of the refrigerant WARNING RISK OF ELECTROCUTION e Turn OFF all power supply before removing the switch box cover connecting electrical wiring or touching electrical parts Where applicable stop the equipment s operation first and allow refrigerant pressure to equalize before turning OFF the power 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 refer to Wiring diagrams on page 15 7 Do NOT touch electrical components with wet hands Do NOT leave the unit unattended when the service cover is removed Protect electric components from getting wet while the s
18. cables Check inverter PCB Corrective action If required replace thermis tor R6T see page 141 or PCB AQP see page 94 e Re establish power to PCB Replace PCB A1P see page 91 in case power supply and transformer TR1 are OK but led is not blinking Re establish power to PCBAQP or replace PCB AQP see page 94 in case power supply is OK but led is not blinking Re establish power to PCB A10P or replace PCB A10P see page 95 in case power supply is OK but led is not blinking Replace inverter PCB A10P in case faulty see page 95 Component problem Check continuity of the reactor coil Replace the reactor coil in L1R L2R L3R broken case faulty 3 5 Inaccurate temperature control for both domestic hot water and space heating operation Possible failures Root cause Root cause category parameter setting Incorrect setting of unit control method setting C 07 Incorrect setting of user inter face location user menu A 2 1 B Incorrect setting of pump oper ation mode continuous sam ple request setting F OD Incorrect setting of unit control method setting C 07 leav ing water control room ther mostat control ext room thermostat control Incorrect setting of user inter face location user menu A 2 1 B at unit in room Incorrect setting Root cause category installation User interface A2P thermo stat sensor value not repre senting
19. open or short circuit Possible cause Check Corrective action Faulty suction thermistor R3T refriger Check thermistor R3T see page 57 Replace thermistor R3T see page 141 or ant brine PCB AQP PCB AQP see page 94 2 22 J6 Heat exchanger refrigerant inlet thermistor R4T abnormality Trigger Heat exchanger refrigerant inlet thermis Unit stops operating Auto reset when problem is solved tor detects an abnormal value open or short circuit Possible cause Corrective action Faulty heat exchanger refrigerant inlet Check thermistor R4T see page 57 Replace thermistor R4T see page 141 or thermistor R4T refrigerant brine PCB PCB AQP see page 94 AQP 2 23 J7 Brine inlet thermistor R5T abnormality Trigger Effect Reset Brine inlet thermistor R5T detects an Unit stops operating Auto reset when problem is solved abnormal value open or short circuit Possible cause Check Corrective action Faulty brine inlet thermistor R5T refrig Check thermistor R5T see page 57 Replace thermistor R5T see page 141 or erant brine PCB AQP PCB AQP see page 94 13 01 14 Version 1 0 9 DAIKIN Page 27 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 2 Error code based troubleshooting 2 24 J8 Brine outlet thermistor R6T abnormality Trigger Effect Reset Brine outlet thermistor R6T detects an Unit stops operating Auto reset when problem is solved a
20. 1 Required products when servicing the Daikin Altherma GSHP sannnannnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnrnnnnnnnnnnnrnnnnnnne 82 1E TOS T AEA EAE ap E EEA E E AE E E E EE E AE E E N EE ES 82 1 4 1 Required special tooling when servicing the Daikin Altherma GSHP ccsececcseeeeeeeeeeeeeeeeeeseeeeesaneeeeees 82 2 Unit specific repair procedures ccc cccccceccceeeceeeceececeeecueecanecauecaueecueecaeecaeecsuecsueesaeecueeseuecsueseueesueessuesausesaes 83 2 1 Unit specific refrigerant brine and Water procedures ccceeccccceeececesececeeeceeeeeceesseeeecsueeecseeceeseeseeeesseeesaneees 83 2 1 1 Removing the front panel sccecieiactcstecedsncztadictecasQaiecandnedavGatecesdine devans anbddodtediaaucnideiteddann biesensydeaastademsancseealeedans 83 2k22 BO IC INU PIII sscan EE EE N AE 84 2 1 3 Draining the brine Circuit ast ryacesactestssesnascebescod seeds nainn aana a aiana Taar aa iaaa aan einan 84 2A Ar purge of the DNE CIN CUIE sesede ea e Aaa Pe AEE E EA EEE RES 85 2s ko Draining Me water COUI acacc sseracessennsoaatetesnenusieastaseanenicSeaedeudecione E ARa ES EE A OEE N 85 2 1 6 Air purge of the space heating circuit cee ccceecceceeseeceeeeecceeeeecseueeccsaesecseuseeceusceeseeeeeceeseeeseseeesesseeesegerees 86 2 1 7 Draining the domestic hot water tank ccccccseccecseeeeceeeeeeseeeeeeeeeeeeseaeeeeseeeeceeeeeesseeseessueeeseseeeeesaseeessneeees 86 2 1 8 Removing the top panel oc
21. 1 1 3 1 01 Set weather dependent heating High ambient temp for LWT main zone heating R W 10 20 C step 1 C WD curve 15 C A 3 1 1 3 1 02 Set weather dependent heating Leaving water value for low ambient temp for R W 9 00 9 01 step 1 C LWT main zone heating WD curve 60 C A 3 1 1 3 1 03 Set weather dependent heating Leaving water value for high ambient temp for R W 9 00 min 45 9 01 step 1 C LWT main zone heating WD curve 25 C A 3 1 1 5 8 05 Modulated LWT R W 0 No 1 Yes A 3 1 1 6 1 F OB Shut off valve Thermo On OFF R W 0 No 1 Yes A 3 1 1 7 9 0B Emitter type R W 0 Quick 1 Slow _______________ Additional 0 Absolute 1 Weather dep 2 Abs scheduled 3 WD scheduled A 3 1 2 2 1 9 05 Temperature range Minimum temp heating R W 15 37 C step 1 C 24 C Page 154 This setting is not applicable for this unit Do not change the default value Ground source heat pump Figure 70 Field settings table DAIKIN Field settings table Breadcrumb Field code Setting name Range step Default value 1 Field settings Installer setting at variance with default value Date Value Delta T emitter A 3 1 2 2 2 9 06 Temperature range Maximum temp heating R W 37 65 C step 1 C 65 C A 3 1 2 3 0 00 Set weather dependent heating Leaving water value for high ambient temp for R W 9 05 min 45 9 06 C
22. 1 7 Check pump operation mode setting F OD Check setting 2 00 Check setting 4 06 DAIKIN Corrective action Correct the drain connection if required Valve not completely closed Check if drain valve is closed Close the drain valve Replace brine safety valve see page 111 Component failure Check drain valve Replace brine drain valve Component failure Check expansion vessel see page 60 Expansion vessel EXP1 not Component failure Check expansion vessel see pressurized page 60 Replace brine expansion ves sel see page 122 Replace brine expansion ves sel see page 122 Corrective action Adapt domestic hot water set point e g 50 55 C Adapt leaving water setpoint e g lt 55 C will reduce backup heater operation Adapt room thermostat set point Adapt high LWT limit for weather dependent heating setting 1 03 Adjust setting to match appli cation refer to installers refer ence guide Change setting F OD from continuous operation value 0 to Sample 1 or Request 2 Refer to installer reference guide for applicable value Page 45 Ground source heat pump ESIE13 03 Part 2 Troubleshooting Possible failures Backup heater equilibrium point was set too high Setting domestic hot water operation mode 6 0D not set optimally Root cause Setting equilibrium tempera ture 5 01 was set too high Setting domestic hot w
23. 3 clips 2 from the 3 way valve body 1 2 Remove the 3 way valve body 2 Page 126 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Figure 49 Replacing the 3 way valve body 1 3 way valve body Installation CAUTION When installing the 3 way valve motor on the 3 way valve refer to Installation of Replacing the 3 way valve motor on page 123 1 Proceed in reverse order 2 Fill the water circuit refer to To fill the space heating circuit in the Daikin Altherma ground source heat pump Installer reference guide 3 Purge the water circuit refer to 9 3 Air purge function on the space heating circuit in the Daikin Altherma ground source heat pump Installer reference guide 2 2 18 Replacing the water manometer 2 2 18 1 Preliminary actions 1 Remove the front panel refer to Removing the front panel on page 83 2 Remove the top panel refer to Removing the top panel on page 86 3 Remove the switch box cover refer to Removing the switch box cover on page 87 4 Drain the water circuit refer to Draining the water circuit on page 85 5 Remove PCB A1OP refer to Procedure replacing the A10P PCB on page 95 2 2 18 2 Procedure Removal CAUTION A The capillary connection is sealed by a copper seal when removing the water manometer capillary from the pressure relieve valve make sure not to lose the copper seal
24. 55 1 2 3 35 4 5 13 01 14 Version 1 0 DAIKIN Page 77 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 4 Component checklist 4 17 3 way valve M3S Technical specification Description The 3 way valve is driven by a 230 VAC motor Motor and valve can be replaced The 3 way valve is used to circulate the water in separately the water circuit through the domestic hot water tank or through the space heating circuit Location Piping diagram Switch box an Oe Z Zz R2T indoor n pare ive _ R5T indoor Check procedure Mechanical check 1 Switch off the Daikin Altherma GSHP via the user interface 2 Remove the top panel refer to Removing the top panel on page 86 3 Check that the knob is fully pressed motor control 4 Check that the knob is either in domestic hot water or space heating position but not in an intermediate position Electrical check 1 Switch off the Daikin Altherma GSHP via the user interface 2 Remove the top panel refer to Removing the top panel on page 86 3 Remove the switch box cover refer to Removing the switch box cover on page 87 4 Power the Daikin Altherma GSHP and activate domestic hot water Page 78 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 4 Component checklist 10 11 12 13 14 15 16 17 aes _ a ere T COM NLL oe a fa S S J Measure
25. B User interface location R W 0 At unit 1 In room A 2 2 4 C 05 Contact type main R W 1 Thermo ON OFF 2 C H request A 2 2 5 C 06 Contact type add R W 1 Thermo ON OFF 2 C H request A 2 2 6 1 C 02 Digital I O PCB Ext backup heat src R W 0 No 1 Bivalent A 2 2 6 2 D 07 Digital 1 O PCB Solar kit R O 0 No A 2 2 6 3 C 09 Digital I O PCB Alarm output R W 0 Normally open 1 Normally closed A 2 2 7 D 04 Demand PCB R W 0 No 1 Power consumption control A 2 2 8 D 08 External kWh meter 1 R W 0 No A 2 2 9 D 09 External kWh meter 2 R W 0 No A 2 2 A D 02 DHW pump R W 0 No 1 Secondary rtrn E 06 1 2 Disinf Shunt E 06 1 A 2 2 B C 08 External sensor R W 0 No 1 Outdoor sensor 2 Room sensor Space operation L LWT settings _______________ Main A232 6 03 BUH step 1 R W 0 10kW step 0 2kW 3kW A 2 3 3 6 04 BUH step 2 R W 0 10kW step 0 2kW 3kW A 3 1 2 1 LWT setpoint mode R W A 3 1 1 1 LWT setpoint mode R W 0 Absolute 1 Weather dep 2 Abs scheduled 3 WD scheduled A 3 1 1 2 1 9 01 Temperature range Minimum temp heating R W 15 37 C step 1 C 24 C A 3 1 1 2 2 9 00 Temperature range Maximum temp heating R W 37 65 C step 1 C 65 C A 3 1 1 3 1 00 Set weather dependent heating Low ambient temp for LWT main zone heating R W 20 5 C step 1 C WD curve 20 C A 3
26. Component failure Check the 3 way valve see Replace the 3 way valve see page 78 page 123 and see page 126 Page 38 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting Possible failures Root cause Root cause category system design Brine circuit too small 3 2 Capacity shortage Space heating INFORMATION Incorrect design brine circuit too small 3 Symptom based troubleshooting Check temperature difference between brine leaving R6T and brine entering R5T Brine circuit could be too small in case temperature differ ence is too low or continuously decreasing Corrective action Modify the brine system Refer to Capacity shortage General on page 36 for an overview of the general causes both for space heating and domestic hot water which can lead to capacity shortage Possible failures Root cause Check Corrective action Root cause category end user Too low leaving water temper ature setpoint Too low space heating setpoint on room thermostat User set too low leaving water temperature setpoint by schedule or manual operation User set too low room setpoint by schedule or manual opera tion Check leaving water setpoint Check room thermostat set point Adapt leaving water setpoint Remark check the weather dependent settings relation outdoor temperature set point in case weather
27. Cut the tie wrap 6 and remove the A10P PCB Remove the A10 PCB 1 13 01 14 Version 1 0 7 DAIKIN 2 Unit specific repair procedures Page 95 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Figure 17 Replacing the A10P PCB 1 A10P PCB 4 Frame 2 Screw 5 Heat sink 3 Hex coupling nut 6 Tie wrap Installation 1 Proceed in reverse order 2 2 3 Cleaning the brine filter WARNING All hazardous waste shall be managed in accordance with federal state and local regulations 2 2 3 1 Preliminary actions 1 Switch off the Daikin Altherma GSHP via the user interface 2 Remove the front panel refer to Removing the front panel on page 83 3 Remove the top panel refer to Removing the top panel on page 86 4 Partially drain the brine circuit refer to Draining the brine circuit on page 84 Page 96 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures 2 2 3 2 Procedure Removal CAUTION Although the brine circuit is partially drained some brine may be spilled when removing the brine filter Always wipe off spilled brine 1 Pull the velcro strip 1 to release the brine filter insulation 2 2 Tip over the brine filter insulation 2 3 Place a recipient 3 under the brine filter 5 4 Remove the clip 4 that fixes the brine filter 5 5 Pull the brine filter 5 to r
28. Daikin Altherma GSHP INFORMATION The high pressure sensor connector must be plugged into X17A on PCB AO9P Measure DC voltage here High pressure sensor Microcomputer D input 8 In case no voltage is measured across connector X17A pin 1 3 do following checks 9 Is PCB AO9P powered if not check power supply 10 Is connector X17A plugged in PCB AO9P if not plug in X17A 11 Is 5 VDC measured across connector X17A pin 1 37 if not replace PCB AO9P Incase all 3 checks above are OK but still no voltage is measured between X17 pin 1 3 replace the high pressure sensor B1PH refer to Replacing the refrigerant high pressure sensor on page 135 4 12 High pressure switch S1PH Technical specification Description The high pressure sensor S1PH has a normally closed contact If the pressure The high pressure switch S1PH is a safety com exceeds 41 7 0 1 bar the contact will open if the pressure drops below ponent that stops the compressor if overpressure 32 2 bar the contact will close is detected in the refrigerant circuit Location Piping diagram Switch box K1M K2M QIL F1B L z PHE2 PLATE EXCHANGER Condenser service port service port 4N MOTOR OPERATED outdoor VALE indoor Check procedure Page 70 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 4 Component checklist Electrical check 1 Switch off the Daikin Altherma GSHP
29. Daikin Altherma ground source heat pump Installer reference guide EGSQH10S18AA9W Unplug the connector X18A on the A9P PCB Measure the electrical conductivity between pin 2 and 4 of the connector on the flow switch the value must be infinite Power the Daikin Altherma GSHP Activate Installer level on the user interface refer to Installer Level Settings on the user interface are available in the Installer Reference Guide paragraph To access the most used commands Select Actuator test run A 7 4 Activate the brine pump A 7 4 1 Measure the electrical conductivity between pin 2 and 4 of the connector on the flow switch the value must be 0 Ohm zero If the conductance measurements are not correct the brine flow switch must be replaced refer to Replacing the brine flow switch on page 100 4 7 Brine pump M3P Technical specification Description The brine pump M3P is a 3 speed pump The brine pump M P circulates the brine in the brine circuit Location Piping diagram Switch box EXPANSION VESSEL PRESSURE SAFETY PG1 VALVE Fo e DA Z z _ na PHE1 PLATE EXCHANGER Evaporator Check procedure 13 01 14 Version 1 0 WDAIKIN Page 63 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 4 Component checklist Electrical check INFORMATION Highest speed brine pump speed 3 leds on should always be enabled 1 Switch off the Daikin Altherma GSHP via the
30. Effect Reset Room temperature thermistor of user Auto reset interface detects an abnormal value open or short circuit Unit will keep operating Possible cause Check Corrective action Faulty room thermistor of user interface Check room thermistor read out value via Replace user interface or replace hydro the user interface and compare with PCB A1P see page 91 actual room temperature 13 01 14 Version 1 0 WDAIKIN Page 21 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 2 Error code based troubleshooting 2 5 C0 Flow sensor error Trigger Effect Reset Flow sensor still detects a water flow after Unit will stop operating Via user interface 45 seconds when pump has stopped Possible cause Check Corrective action Water flow caused by external pump Check if another external pump is Correct hydraulic field circuit Refer to the installed on the same water circuit Installer Reference Guide Faulty flow sensor hydro PCB A1P Check flow sensor see page 76 Replace flow sensor see page 102 or replace hydro PCB A1P see page 91 If flow sensor failed due to contamination check for source of contamination and consider to install an additional water fil ter 2 6 C4 Refrigerant liquid thermistor R3T A1P abnormality Trigger Effect Reset Thermistor detects an abnormal value Unit will stop operating Auto reset when problem is solved open or short circuit
31. PCB 5 at the right side and unlatch the 11 pcb supports 6 one by one using a small pliers 7 Remove the A1P PCB 5 13 01 14 Version 1 0 DAIKIN Page 91 Ground source heat pump ESIE13 03 Part 3 Repair Figure 13 Replacing the A1P PCB 1 X33A 4 Fixation plate 2 X85A 5 A1P PCB 3 Screw 6 PCB support Installation 1 Proceed in reverse order 2 2 2 3 Procedure replacing the A4P PCB Removal 1 Unplug the connectors CN2 3 from the A4P PCB 2 Unit specific repair procedures 2 If required note the position of the wires connected to terminals X1 4 1 and YC Y1 4 2 on A4P PCB 4 3 Remove the field connected wiring on terminals X1 4 1 and YC Y1 4 2 on A4P PCB 4 Page 92 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures 4 Carefully pull the A4P PCB 4 at the right side and unlatch the 4 pcb supports 5 one by one using a small pliers 5 Remove the A4 PCB 4 6 Unplug the jumper wire from connector CN1 6 on the A4P PCB Figure 14 Replacing the A4P PCB 4 A4P PCB 5 PCB support 6 CN1 Installation 1 Proceed in reverse order 2 Install the jumper wire on connector CN1 on the A4P PCB 2 2 2 4 Procedure replacing the ASP PCB Removal 1 Unplug connector X80A 1 from the A8P PCB 4 2 If required note the position of the wires connected to terminals X800 3 and X801M 2 on PCB ASP 4 3 Re
32. Page 68 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 4 Component checklist 4 11 High pressure sensor B1PH Technical specification Description The high pressure sensor B1PH is an analog pressure sensor The high pressure sensor B1PH measures the pressure in the high pressure section of the refrig erant circuit Location Piping diagram Switch box KiM K2M F1B MUFFLER MU _ a PLATE HEAT EXCHANGER Condenser service port service port 4N MOTOR OPERATED outdoor VALVE indoor Check procedure Electrical check 1 Switch off the Daikin Altherma GSHP via the user interface 2 Remove the switch box cover refer to Removing the switch box cover on page 87 3 Open the Sound Insulation Front Side Only refer to Opening the sound insulation of the heat pump module front side only on page 87 4 Connect a pressure gauge to the high pressure service port and read the pressure 5 From the graph below determine the expected sensor output signal l l l l l H l l l l l l l l l l l l T l j l l Detected Pressure PH kg cm 0 5 0 05 1 15 2 2 5 3 35 4 Output Voltage Vx VL 13 01 14 Version 1 0 9 DAIKIN Page 69 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 4 Component checklist 6 Power the
33. R10T must be replaced refer to Replacing temperature sensor R10T on page 143 The tables below must be used to compare the measured resistance with the correct resistance for the measured temperature with a contact thermometer 1 Switch off the Daikin Altherma GSHP via the user interface 2 Remove the front panel refer to Removing the front panel on page 83 3 Remove the switch box cover refer to Removing the switch box cover on page 87 4 From the table below select the thermistor that must be checked 5 Measure the temperature of the thermistor using a contact thermometer 6 Unplug the connector from the appropriate PCB and measure the resistance between the pins listed in Table 2 1 on page 58 Compare the measured resistance with the range determined by the lower and higher temperature in Table 2 2 on page 59 7 If the measured resistance does not match the listed value the thermistor must be replaced refer to Replacing a thermistor except R10T on page 141 13 01 14 Version 1 0 9 DAIKIN Page 57 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 4 Component checklist INFORMATION All thermistors have a tolerance of 5 E g thermistor R4T AQP e Measured temperature with contact thermometer 23 1 C e Unplug the sensor and measure the resistance between X12A 5 6 21 3 kOhm e As defined in Table 2 1 on page 58 this is a type 1 thermistor the resistance values are defined by Table 2 2
34. SV2 Component failure Check safety valve see Replace safety valve see blocked page 60 page 108 Safety valve water side SV2 Component failure Check safety valve see Replace safety valve see leaking page 60 page 108 Leakage of drain valve water Component failure Check drain valve Replace drain valve side DR3 DR4 Domestic hot water tank leak Component failure Check tank visually for leak Repair leakages If not possi age ages ble complete unit has to be replaced Air Purge AP leakage Component failure Check air purge valve for leak Replace air purge valve ages Page 44 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 3 Symptom based troubleshooting 3 Brine leakage Possible failures Root cause Root cause category installation Drain connection of brine safety valve SV1 leaking Leakage of drain valve brine side DR1 DR2 Bad connection between unit drain pipe brine and field drain pipe Root cause category component mechanical Safety valve brine side SV1 blocked or leaking Leakage of drain valve brine side DR1 DR2 Broken bellow of brine side expansion vessel EXP1 Component failure 3 8 Power consumption too high Possible failures Root cause Root cause category end user Too high domestic hot water setpoint Too high leaving water temper ature setpoint Too high space heating set
35. air thermistor R1T abnormality eee ecee ce eeeeeeeeeeeeeeeeeeeeeseeeeeeeeseeeeeesssaeeeseeaeeseeessaeeees 26 2 19 J1 High pressure sensor abnormality cccesscccssscecsececessececeeceseesececsueeseeuseeseueceseuaeesseseessuseesssseesssaeess 26 2 20 J3 Discharge thermistor abnormality cccsccccsssceceesceceescesseceeceueeeeeesecssusecseeaeceseeeeseseessaseeesseeesssaeess 2 2 21 J Suction thermistor R3T abnormality eee ceeeeeeececeeeeeeeeeaeeeeeeeseeeeeeesaeeeeeseaeeeeeeseeeeeeeeesageeeeseaaeeees 27 2 22 J6 Heat exchanger refrigerant inlet thermistor R471 abnormality cccccseeeeeceseeeeeeeeeeeeeeeaeeeeeeseeeeeees 27 2 23 JT Brine inlet thermistor RST abnormality ee ccceccceceeeeeeeeeeeeeeeeseeeeeeeeeeeeeeesaaeseeeseaeeeeeessaeeeeeeseaaeeees 27 2 24 J8 Brine outlet thermistor ROT abnormality 2 0 cece eee eeeeeeeeeeeeeeeeeeeeeeeeseeeeeeeseeeeeeeaseeeeseaeeeeeessaeees 28 2 25 LC Transmission system abnormality c cece cece ceeeeeeeeeeeeeeeeseeeeeeesaeeeeeeseeeeeeseeeeeeseaeeeeeeseeseeeessegeeeessaeeees 28 13 01 14 Version 1 0 9 DAIKIN Page 3 ESIE13 03 Ground source heat pump 226 Convener atenton sssini eee tahoe nde at needle ian tenes Sure ode E Aaa ue EEES 28 2 27 L1 Refrigerant brine PCB abnormality 2 0 0 ccccceceeeeeeeceeeeeeeeseeeeeeeeaeeeeeeseeeeeeeeseeeeeeseeeeee
36. brine circuit to the refrigerant larger surface compared to conventional heat exchangers This facilitates the circuit transfer of heat increasing the speed of the temperature change The plate type heat exchanger PTH 2 transfers the heat from the refrigerant circuit to the water circuit Location Piping diagram Check procedure Page 66 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 4 Component checklist Obstruction check indication of possible blockage 1 Remove the front panel refer to Removing the front panel on page 83 2 Open the Sound Insulation Front Side Only refer to Opening the sound insulation of the heat pump module front side only on page 87 3 Power the Daikin Altherma GSHP and activate domestic hot water or space heating and wait 15 minutes 4 Activate Installer level on the user interface refer to Installer Level Settings on the user interface are available in the Installer Reference Guide paragraph 8 1 2 To access the most used commands 5 Check menu 6 1 D Brine outlet temp 6 Check the saturated low pressure value and its corresponding temperature on the manifold and compare it with the temperature displayed for R6T brine outlet temp on the user interface 6 1 D 7 Atemperature difference of 5 to 10 C is acceptable if the temperature difference exceeds 10 C the plate type heat exchanger PTH 2 efficiency is too low and cou
37. can cause incorrect activation of brine freeze up temper ature Page 42 e Component problem e Bad contact between sensor and piping Check thermistor RST A9P see page 57 DAIKIN Replace thermistor ROT see page 141 or PCB AQP see page 94 13 01 14 Version 1 0 Ground ESIE13 03 Part 2 Troubleshooting Possible failures Deviation of brine leaving R6T AYP thermistor can cause incorrect activation of brine freeze up temper ature Hydro PCB A1P not opera tional Refrigerant brine PCB A9P not operational Inverter PCB A10P not operational Inverter PCB A10P does not give correct output to compressor Reactor coil Root cause source heat pump 3 Symptom based troubleshooting Inverter circuit problem Component problem Bad contact between sensor and piping pag No power supply Faulty transformer TR1 PCB malfunction No power supply PCB malfunction No power towards INV PCB PCB malfunction Check thermistor R6T A9P see e 57 Confirm if a small green led is blinking in regular intervals Confirm power supply towards PCB A1P Check good operation of transformer TR1 Confirm if the HAP led is blinking in regular intervals Confirm power supply towards PCB AQP Confirm if the HAP led is blinking in regular intervals Check if power is supplied towards PCB follow wiring back to main power input and check all safeties and
38. case required how to repair The possible causes have been sorted to probability of occurrence and speed of execution 4 2 3 The repair chapter The chapter Repair on page 81 handles the removal and replacement of the major components in the product and discusses cleaning methods as well if applicable such as for filters Where applicable refrigerant handling precautions are mentioned for certain actions please consider these carefully for your own safety 4 2 4 The maintenance chapter The chapter Maintenance on page 147 of this manual describes the maintenance intervals and procedures to be performed on the product Remember that a well maintained product is a more reliable and efficient product 4 2 5 Appendices Finally the service manual provides in chapter Appendix on page 153 valuable reference data such as piping wiring diagrams field settings overview and a checklist to be filled in when you need to escalate an issue to your dealer 4 3 Contact information This manual has been made with much care and effort Use it in your daily jobs as it has been made for you Despite our efforts there is always a chance some cleric or other mistake has been made during the creation of this manual We kindly ask you to send the found mistakes or remarks for improvement to the no reply email address servicemanual daikineurope com Page 16 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshoo
39. component electrical Power cables U V W incor rectly connected to compres sor M1C Wrong assembly during repair 3 13 2 Compressor does not increase frequency Possible failures Root cause Root cause category software control In case the discharge temper ature is higher than 105 C the compressor frequency will be reduced When the discharge temperature is lower than 105 C the frequency can increase again Compressor M1C frequency limited high discharge tem perature protection function active In case high pressure is higher than 38 barg the compressor frequency will be reduced When the pressure drops below 36 barg the compressor frequency can increase again Compressor M1C frequency limited high pressure protec tion function active Inverter control active target water leaving temperature tar get sat high pressure reached Compressor M1C frequency limited 13 01 14 Version 1 0 Normal unit operation no specific countermeasure required Normal unit operation no specific countermeasure required Confirm that the U V W wiring is correctly connected Refer to wiring diagram for an indica tion how to connect correctly Activation of the protection function can be caused by var ious reasons therefore we recommend to check the fol lowing e Check refrigerant charge e Check expansion valve for correct operation see page 71 and check suction sensor R3
40. heater R W 0 No L Brine freezeup temperature 1 Yes A 6 9 A 04 R W 0 0 C A 8 4 08 Which power limitation mode is required on the system R W 0 No limitation 1 2 C 1 Continuous 2 4 C 2 Digital inputs 3 6 C A 8 4 09 Which power limitation type is required R W 0 Current 4 8 C 1 Power 5 10 C A 8 4 0B R W 1 6 12 C A 8 4 0D R W 3 7 14 C A 8 5 00 Is backup heater or boiler operation allowed above equilibrium R W 0 Allowed L_ Boiler efficiency temperature during space heating operation 1 Not allowed A 6 A 7 05 R W 0 Very high A 8 5 01 What is the equilibrium temperature for the building R W 15 35 C step 1 C 1 High 0 C 2 Medium A 8 5 02 R O 0 3 Low A 8 5 03 R W 0 4 Very low A 8 5 04 R W 10 A8 5 05 What is the requested limit for DIT RW 0 50A step TA A 8 0 00 Leaving water value for high ambient temp for LWT add zone heating WD curve R W 9 05 min 45 9 06 C step 1 C 50 A 25 C A 8 5 06 What is the requested limit for DI2 R W 0 50 A step 1A A 8 0 01 Leaving water value for low ambient temp for LWT add zone heating WD curve R W 9 05 9 06 C step 1 C 50A 60 C A 8 5 07 What is the requested limit for DI3 R W 0 50 A step 1A A 8 0 02 High ambient temp for LWT add zone heating WD curve R W 10 20 C step 1 C 50A 15 C A 8 5 08 What is the requested limit for D14 R W 0 50 A step 1A A 8 0 03 Low ambient temp for LWT add zone heatin
41. high pressure protec tion function active Page 36 In case the discharge temper ature is higher than 105 C the compressor frequency will be reduced When the discharge temperature is lower than 105 C the frequency can increase again In case high pressure is higher than 38 barg the compressor frequency will be reduced When the pressure drops below 36 barg the compressor frequency can increase again Activation of the protection function can be caused by var ious reasons therefore we recommend to check the fol lowing e Check refrigerant charge e Check expansion valve for correct operation see page 71 and check suction sensor R3T see page 57 Check discharge thermistor R2T see page 57 Activation of the protection function can be caused by var ious reasons therefore we recommend to check the fol lowing e Check high pressure sensor see page 69 Check high pressure side plate type heat exchanger see page 66 for good water flow and heat exchange Check the refrigerant charge DAIKIN Corrective action Based on the diagnosis exe cute one of the following actions e Correct the refrigerant charge total charge 1 8 kg Replace expansion valve see page 131 page 133 or suction sensor R3T see page 141 Replace discharge thermistor R2T see page 141 Based on the diagnosis exe cute one of the following actions e Replace high pressure sensor see page 135 Op
42. inverter PCB A10P see page 95 Refrigerant shortage incorrect charge Check for refrigerant shortage If required repair the leak and charge the leakage Perform leak test correct amount of refrigerant 1 8 kg 2 29 L5 Output overcurrent detection Trigger Effect Inverter PCB detects overcurrent to power Unit will stop operating Via user interface transistor Possible cause Corrective action valve Power supply is not OK voltage drop Check power supply for voltage dips Lr Faulty compressor Check compressor see page 68 Replace compressor see page 117 Faulty inverter PCB A10P Check inverter PCB see page 74 Replace inverter PCB see page 95 Refrigerant circuit is clogged Check for possible blockage blockages can be checked by measuring the refriger ant pipe temperature Sudden drop in temperature could indicate a blockage remark this is not valid for the expansion 13 01 14 Version 1 0 9 DAIKIN Page 29 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 2 Error code based troubleshooting 2 30 L8 Electronic thermal overload Trigger Effect Reset When compressor overload except dur Unit will stop operating Via user interface ing startup is detected Possible cause Corrective action Refrigerant circuit is clogged Check for possible blockage blockages can be checked by measuring the refriger ant pipe temperature Sudden dro
43. li l pi service port service port l l l l l E FIELD SUPPLIED E l TO MOTOR i 14 OPERATED V7 tod I x o SHUT i outdoor ee tain I EXPANSION a SN l l VALVE DR4 l VESSEL lj 1 l I po o i l l l l l I l l l E l L l l l l l l l l To ground loop 13 01 14 Version 1 0 WDAIKIN Page 161 ESIE13 03 Part 5 Appendix 4 Piping overview Page 162 5 10 1 Legend Expansion vessel water side Expansion vessel brine side Pressure gauge water Pressure gauge brine Low pressure refrigerant service port High pressure refrigerant service port Safety valve brine side Safety valve water side CONDO BP WNHY Drain valve brine DR1 Drain valve water DR3 Expansion valve Air purge valve Brine filter Water filter Cooling element inverter heat sink Flow sensor UULLELLEODLDLOCOLLe SS A Ground source heat pump Figure 76 Piping overview BRINE LEAVING DOMESTIC HOT WATER OUT WATER LEAVING space heating 28 Wr Ti Sar f 1 4 Y i 4 Fs A i j i J 1 he ith 1 a Ay 5 TLL 17 Flow switch 18 Brine pump 19 Water pump 20 Back up heater 21 Drain valve brine DR2 22 Plate type heat exchanger evaporator 23 Plate type heat exchanger condensor 24 Compressor j uf J J DAIKIN 4 BRINE ENTERING DOMESTIC COLD WATER IN WATER ENTERING space heating j Muffler Check val
44. o o Inverter discharge pipe stepping down 9 jejejojejo Inverter current stepping down Other stepping down 9 DAIKIN 1 Error codes When SET BS2 button is pressed the LED display for RETURN 2 turns ON When SET BS2 button is pressed the LED display for RETURN 3 turns ON Press the RETURN BS3 j button to return the system to the initial state of Monitor mode Pressing the MODE BS1 button will bring the system to the Setting mode 1 Page 19 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 2 Error code based troubleshooting 2 Error code based troubleshooting Overview of error codes AA Back up heater safety error LC Transmission system abnormality AH Disinfection operation error LH Converter attention A1 Hydro PCB abnormality L1 Refrigerant brine PCB abnormality CJ 02 User interface room temperature error L4 Radiation fin temperature abnormality CO Flow sensor error L5 Output overcurrent detection C4 Refrigerant liquid thermistor R3T A1P abnormality L8 Electronic thermal overload EC Domestic hot water temperature error L9 Stall prevention time lag E1 Refrigerant brine PCB abnormality P1 Open phase or power supply voltage imbalance E3 High pressure abnormality P4 Inverter radiation fin thermistor R10T erro
45. on page 59 Resistance at 20 C 25 0060 kOhm Resistance at 25 C 20 0000 kOhm e The measured value 21 3 kOhm is inside the range thermistor R4T AQP passes the check INFORMATION The user interface 6 1 Sensor Information allows to monitor most thermistors If the measured resistance of the thermistor matches the temperature measured with the contact thermometer but the temperature for the corresponding thermistor is not correct on the user interface display replace PCB AYP see page 94 or PCB10P see page 95 Table 2 1 Thermistors Thermistor Processed on PCB Connector pin Type User interface atmo age a K E rratieter6UH S ATPSS zACTS S dTSC d NA Lvingwater at ant es i RaT tergen m onra i 607 Regeren amsa i T roaa 1P RET suction R4T inlet water X8A 5 6 6 1 6 Inlet water temp RAT 2 phase Tx X12A 5 6 not available RST domestic hot water tank X9A 1 2 6 1 3 Tank temp R5T brine entering X12A 7 8 6 1 C Brine inlet temp R6T brine leaving X13A 1 2 6 1 D Brine outlet temp R10T inverter heat sink A10P X111A 1 2 not available Page 58 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 4 Component checklist Table 2 2 Thermistor resistance temperature characteristics Sensor type 1 Sensor type 2 Sensor type 3 T C kO T C kQ 196 9198 o 1827 883 65 6705 0 635 0834 31 4796 309 9511 25 0060 2
46. page is this your 1St encounter with this particular unit operation What do you need to do Repair Maintenance Installation How to retrieve Error Codes Refer to Installation Manual or Installer Reference Guide Error Code based troubleshooting Component checklist Is repair necessary 13 01 14 Version 1 0 WDAIKIN Page 15 Ground source heat pump ESIE13 03 Part 1 Introduction 4 How to use this book 4 2 Parts of the book This Daikin product Service Manual is intended for professional use only The actions described hereafter are only to be performed by qualified and certified persons taking into account the safety precautions mentioned in this manual and the local regulations as well As can be observed from the Table of Contents this manual is split up into several chapters 4 2 1 The introduction chapter The chapter Introduction on page 9 includes the safety precautions this topic and the general operation description of the product s this manual refers to 4 2 2 The troubleshooting chapter The chapter Troubleshooting on page 17 not only deals with the methods to recognize and resolve occurring error codes it also describes the methods how to solve a problem that does not immediately trigger an error code Such problems are referred to as symptom based Both the error code based and symptom based troubleshooting tables indicate possible causes the necessary checks and in
47. refrigerant liquid XTA 1 2 Access via front of heat pump module displace water RAT in water TT 5 6 expansion vessel refer to Replacing the water expansion eee ae on page 121 ROT in Lilian hot Soo e 1 2 Turn the pivoting power input section open domestic hot water tank water tank insulation R2T out X12A 1 2 These 4 thermistors must be replaced together R3T out suction X12A 3 4 Access via front of heat pump module for R3T R4T and RAT out 2 phase Tx X12A 5 6 R5T displace water Capan oD vessel refer to Replacing the water expansion vessel on page 121 RAOUN emer a Access via rear of heat pump module for R2T displace brine expansion vessel refer to Replacing the water expansion vessel on page 121 and open rear of heat pump module R6T out brine leaving 1 Access via front of heat pump module displace water expansion vessel refer to Opening the sound insulation of the heat pump module front side only on page 87 Removal The procedure below showing R2T in can be used for all thermistors except R10T 1 Cut the tie wraps 1 that fix the insulation 3 and the sensor wire 2 2 Slide the insulation 3 aside Figure 66 Replacing a temperature sensor 1 1 Tie wrap 4 Sensor holder 2 Sensor wire 5 Clip 3 Insulation 1 Press the clip 1 that fixes the sensor 2 2 Remove the sensor 2 from the sensor holder 3 Page 142 DAIKIN 13 01 14 Version 1 0 Ground
48. room temperature 13 01 14 Version 1 0 Bad location of thermostat sensor external influence in case of room thermostat con trol setting C 07 2 Check if setting C 07 leaving water control room thermostat control ext room thermostat control is in set according to the application Check if setting of user inter face location user menu A 2 1 B at unit in room is set correctly Confirm setting F O Check if user interface is mounted in the correct position to measure the correct room temperature 9 DAIKIN Corrective action Adapt setting F 0 if required Factory setting F O 1 Correct the position of the user interface for more accurate room temperature measure ment Page 43 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 3 Symptom based troubleshooting Possible failures Root cause Corrective action Root cause category component electrical Leaving water thermistor Deviation of thermistor Check thermistor R1Tin see Replace R1T or PCB A1P see R1Tin A1P deviation lower temperature page 5 7 page 91 Causes incorrect temperature measured than actual control Bad contact between sensor and pipe Deviation of domestic hot Deviation of thermistor Check thermistor R5Tin see Replace thermistor R5T see water tank thermistor R5Tin Bad contact between page 57 page 141 or PCB A1P see A1P Remark only valid for sensor and pipe page 91 inaccu
49. set too low ture 5 01 was set too low higher to more quickly allow backup heater operation Root cause category installation Brine circuit leakage Brine loop not pressure tested Pressure test brine loop Repair leakage if required Brine circuit partially blocked Obstruction in brine system Check brine circuit for block Remove possible blockages ages and check the brine quality Brine circuit partially frozen Glycol concentration not OK e Check brine concentration Check brine freeze up temperature Tf setting A 04 Pressure test brine loop to check for leaks Purge air out of unit and field supplied brine system Air in the brine system Not enough air purged Check if all air purge valves are open Check if air purge valves are installed on all highest points of the field installed brine system 13 01 14 Version 1 0 9 DAIKIN Page 37 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 3 Symptom based troubleshooting Possible failures Root cause Corrective action Brine filter F11 partially Dirty brine Check brine filter e Clean the brine filter see blocked page 96 e Check the brine quality Evaporator partially blocked Dirty brine Check the brine plate type Replace the brine plate type brine side heat exchanger see page 66 heat exchanger if blocked for blockage Evaporator partially frozen Brine concentration not OK Check brine concentration brin
50. stop operating Auto reset between refrigerant brine PCB and hydro PCB or inverter PCB Possible cause Check Corrective action Faulty inverter PCB A10P Check if the correct spare part PCB was Replace PCB when required see installed page 95 Faulty refrigerant brine PCB A9P Check if the correct spare part PCB was Replace PCB when required see installed page 94 Faulty hydro PCB A1P Check if the correct spare part PCB was Replace PCB when required see installed page 91 13 01 14 Version 1 0 WDAIKIN Page 31 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 2 Error code based troubleshooting 2 36 U0 Refrigerant shortage Trigger Effect Refrigerant brine PCB detects Unit will stop operating Via user interface maximum opening expansion valve and discharge superheat gt 50 C for 5 minutes 4 times a secondary current drop for 5 minutes unit goes thermo off after every drop Possible cause Corrective action Refrigerant circuit is clogged Check for possible blockage blockages can be checked by measuring the refriger ant pipe temperature Sudden drop in temperature could indicate a blockage remark this is not valid for the expansion valve Refrigerant shortage incorrect charge Check for refrigerant shortage Perform If required repair the leak and charge the leakage leak test correct amount of refrigerant 1 8 kg Faulty expansion valve Check expansion valve see pag
51. that the water and brine circuit pressures remain stable INFORMATION Fluctuating water brine pressure can indicate a problem with the water brine expansion vessel the pre pressure should be checked Mechanical check 1 Switch off the Daikin Altherma GSHP via the user interface 2 Remove the front panel refer to the Daikin Altherma ground source heat pump Installer reference guide EGSQH10S18AA9W 3 Drain the water circuit refer to Draining the water circuit on page 85 4 Using a manometer measure the pressure at the Schrader valve of the expansion vessel EXP2 5 For the correct expansion vessel EXP2 pressure refer to Changing the pre pressure of the expansion vessel in the Daikin Altherma ground source heat pump Installer reference guide EGSQH10S18AA9W 6 Drain the brine circuit refer to Draining the brine circuit on page 84 7 Using a manometer measure the pressure at the Schrader valve of expansion vessel EXP1 8 For the correct expansion vessel EXP1 pressure refer to Changing the pre pressure of the expansion vessel in the Daikin Altherma ground source heat pump Installer reference guide EGSQH10S18AA9W 13 01 14 Version 1 0 DAIKIN Page 61 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 4 Component checklist 9 If itis not possible to pressurize the expansion vessel or when water brine leaks from the Schrader valve the internal bellow is leaking refer to Replacing the water
52. the brine pump 2 2 1 Preliminary actions 1 Switch off the Daikin Altherma GSHP via the user interface 2 Remove the front panel refer to Removing the front panel on page 83 3 Remove the switch box cover refer to Removing the switch box cover on page 87 4 Open the Sound Insulation of the heat pump module front side only Opening the sound insulation of the heat pump module front side only on page 87 5 Drain the brine circuit refer to Draining the brine circuit on page 84 2 2 7 2 Procedure Removal 1 Unplug the connector X77A 5 from the A9P PCB 2 2 Unplug the 2 Faston connectors from brine pump relay K6M terminals 3 4 4 3 Loosen and remove the screw 1 that fixes the brine pump ground wire 3 to the chassis 4 Guide the brine pump wire 6 through the grommet at the bottom of the switch box 5 Loosen the nuts 7 that fix the brine pump 6 Remove the brine pump 8 7 Remove the seals 9 from the nuts 7 13 01 14 Version 1 0 DAIKIN Page 103 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Figure 24 Replacing the brine pump 1 Screw 6 Brine pump wire 2 A9 PCB 7 Nut 3 Brine pump ground wire 8 Brine pump 4 K6M contacts 3 4 9 Seal 5 X77A Installation CAUTION Make sure to connect the brine pump ground wire and the AYP PCB ground wire to the chassis If damaged replace the seals 1 Proceed in reverse order 2
53. the water circuit to the backup heater to prevent the water circuit from overheating against overtemperature Location Wiring diagram Switch box Check procedure Page 72 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 4 Component checklist Mechanical check Visual check 1 If thermal protector backup heater Q1L has tripped press the red button to reset thermal protector backup heater Q1L Functional check 1 If required check the thermal protector backup heater Q1L trip temperature by submerging the sensor in water 2 Heat the water and measure the temperature of the water The thermal protector backup heater Q1L must trip at approximately 92 C Electrical check 1 Switch off the Daikin Altherma GSHP via the user interface 2 Remove the switch box cover refer to Removing the switch box cover on page 87 g Remove the 2 screws that fix the thermal protector backup heater Q1L A Disconnect the wiring from the thermal protector backup heater Q1L 5 Measure the resistance between Q1L terminals 31 32 and measure the resistance between Q1L terminals 11 12 both contacts must be closed 6 If one or more measurements fail replace the thermal protector backup heater Q1L refer to Replacing the thermal protector backup heater on page 107 13 01 14 Version 1 0 9 DAIKIN Page 73 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 4 Component
54. user interface User interface ee ee l A2P j A2P i i N RIT RIT j fii i i f iL lelea i i ae ee I ii Los i eee eee ee ee aN Omen Net eater a Switch a 1 rawrana E box 1 X5M 516 X5M OF aR eg a eee a i i Alarm output j Onor output j g e Switch BAMEBREJ xM oe Ox l i ee ee ee l il 7 i rage alo l l L N 03 A 250 V AC i l i A Ext heat Min load i LHJ LN LI Ld source 20 mA 5 V DC i V vy A X8B5A1 2 3456 l co ee Se a a ee ee F Options boiler output alarm output On OFF output a ss mee foc ee en teste eR ee eS ee ee Se ee Preferential kWh Electric pulse nly for digital 1 0 PCB option oe o a 16 V DC detection voltage supplied voltage supplied by PCB by PCB X80A 1 2 3 45 6 7 8 9 1011 12 DS1 OFF ELLIE j 1234 xom Le ee ee ee Mcgee O MN ines tape Sek E Demand PB TT i AAAA Power limitation 3 WINICI OY digital inputs l i UULU UVU 12 V DC 12 mA detection es i ain voltage supplied by PCB a a a a a a eet Only for demand PCB option Page 158 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 5 Appendix 2 Wiring diagrams 2 3 Wiring diagram 3 Figure 73 Wiring diagram 3 PCB A1P 1 F i Only for preferential kWh rate power supply outdoor j Only for normal power supply standard eet l orma rate o
55. via the user interface 2 Remove the switch box cover refer to the Daikin Altherma ground source heat pump Installer reference guide EGSQH10S18AA9W 3 Disconnect the connector X111A from PCB A10P 4 Recover the refrigerant 5 Pressurize the refrigerant circuit at 41 7 bar with nitrogen 6 Measure the switch contacts between X111A pin 1 and 2 the switch must be open 7 Replace the high pressure switch S1PH if the contact is not open refer to Replacing the refrigerant high pressure switch on page 138 8 Lower the refrigerant circuit pressure to 30 bar 9 Measure the switch contacts between X111A pin 1 and 2 the switch must be closed 10 Replace the high pressure switch S1PH if the contact is not closed refer to Replacing the refrigerant high pressure switch on page 138 4 13 Electronic expansion valve K1E Technical specification Description The expansion valve K1E has a hermetically sealed body with a slide on step ping motor drive coil 480 pulses from fully closed to fully open position Location Piping diagram Switch box MUFFLER MU i H Ral p z Ne ive m zZz z PHE1 XCHANGER Evaporator service port L Z z heat sink inverter PCB Check procedure Blockage check 1 Switch off the Daikin Altherma GSHP via the user interface 2 Open the Sound Insulation Front Side Only refer to Opening the sound insulation of the heat pump module front side only on page 87
56. water pump M1P is an inverter driven variable speed pump invertor signal The water pump M3P circulates the water in the from PCB A9P connector X25A water circuit Location Piping diagram Switch box PRESSURE SAFETY GAUGE SV2 gt x lt m EXPANSION VESSEL Check procedure Mechanical check Switch off the Daikin Altherma GSHP via the user interface 2 Drain the water circuit 3 Remove the 4 screws that fix the pump motor to the pump house 4 Separate the pump motor from the pump house 5 Inspect the rotor and check that it rotates smoothly 6 After water pump assembly and filling the water circuit check pump for leaks Replace the seal if the water pump leaks Electrical check Switch off the Daikin Altherma GSHP via the user interface 2 Remove the front panel refer to Removing the front panel on page 83 3 Open the Sound Insulation Front Side Only refer to Opening the sound insulation of the heat pump module front side only on page 87 4 Power the Daikin Altherma GSHP 5 Activate Installer level on the user interface refer to Installer Level Settings on the user interface are available in the Installer Reference Guide paragraph To access the most used commands 6 Select Actuator test run A 7 4 7 Activate the water pump A 7 4 6 8 Check the LED on the water pump it must light green 13 01 14 Version 1 0 DAIKIN Page 65 Ground source he
57. 1 Loosen the nut 2 and remove the manometer capillary 3 from the water pressure relief valve 2 Press the water manometer 1 out of the water manometer support 6 CAUTION The capillary 3 is held in position by 2 tie wraps 4 Press the insulation at the position of the tie wraps 4 to release the capillary the same tie wraps 4 will be used when installing the new water manometer 1 13 01 14 Version 1 0 WDAIKIN Page 127 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures 3 Through the opening in the rear of the switch box move the manometer capillary 3 towards the top of the Daikin Altherma GSHP while pressing the insulation where the manometer capillary 3 is attached with a tie wrap 4 to allow the nut 2 to pass 4 Guide the manometer capillary 3 through the opening in the water manometer support 6 Figure 50 Replacing the water manometer 1 7 16 __ 1 Water manometer 5 Switch box opening 2 Nut water manometer capillary 6 Water manometer support 3 Manometer capillary 7 Insulation 4 Tie wrap CAUTION The water manometer capillary is wrapped 1 with insulation 2 at the gauge Keep the insulation to insulate the new water manometer Page 128 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Figure 51 Replacing the water manometer 2 1 Water manometer 2 Insu
58. 3 Pull the water filter 3 to remove it from the filter housing 4 Clean the water filter 3 with water and a soft brush Page 98 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Figure 20 Cleaning the water filter 1 Cloth 3 Water filter 2 Clip Installation CAUTION Handle the water filter with care Do NOT use excessive force when you reinsert the water filter so as NOT to damage the mesh Figure 21 Water filter installation 1 Proceed in reverse order 2 Fill the water circuit refer to To fill the space heating circuit in the Daikin Altherma ground source heat pump Installer reference guide 3 Purge the water circuit refer to 9 3 Air purge function on the space heating circuit in the Daikin Altherma ground source heat pump Installer reference guide 13 01 14 Version 1 0 7 DAIKIN Page 99 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures 2 2 5 Replacing the brine flow switch 2 2 5 1 Preliminary actions 1 Switch off the Daikin Altherma GSHP via the user interface 2 Remove the front panel refer to Removing the front panel on page 83 3 Remove the switch box cover refer to Removing the switch box cover on page 87 4 Drain the brine circuit refer to Draining the brine circuit on page 84 2 2 5 2 Procedure INFORMATION The brine flow switch
59. 4 a tha SEE G L i tere 22522442 88 508 egoe oy iF 9 o E a 2 r Tia he i Cine ha Sanh 2 eee ese FD i es A ae Gos gt 60 00 0O oo EN 1 Screw 4 Frame 2 Screw 5 Latch 3 A10P PCB 6 X111A CAUTION Do not touch the heat sink Keep the heat sink compound clean to ensure good thermal contact after re installation 6 Cut the tie wrap 1 that fixes the RT10T 3 7 Loosen and remove the screw that fixes RT10T 3 to the heatsink 4 8 Remove RI10T 3 Page 144 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Figure 69 Replacing temperature sensor R10T 1 Tie wrap 3 R10T 2 Screw 4 Heat sink with heat conductive paste Installation CAUTION If required additional heat conductive paste can be applied to ensure good heat transfer between the heat sink and A10P PCB part number heat sink compound 9993008P 1 Proceed in reverse order 13 01 14 Version 1 0 7 DAIKIN Page 145 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Page 146 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 4 Maintenance 1 Yearly maintenance intervals and procedures Part 4 Maintenance 1 Yearly maintenance intervals and procedures Following items should be checked on the product at least once a year e Fluid pressure of Space Heati
60. 4 10 0 1 a 8 est o1 6 gk Ogee eee ee ee mee ee er ere ee ee Oe eee eee 68 4 11 High press re sensor BP FA ssirrisrkeirtiisrkodsiiissi kinaa aa laden adweicleveent Owen xa Gaiden Owen SEEE 69 4 12 High pressure switch S1PH ou eccccccceceeeeeceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeseeeeeeeseeeeeeesaeeeeeseeseeesseeaseeessaeeeeeeseneeeesaaees 70 Page 4 DAIKIN 13 01 14 Version 1 0 ESIE13 03 Ground source heat pump 4 13 Electronic Expansion valve K1E cccccccsecccsseeceeeeeceeeecaeecsaeessaeeeceeesaeessusessueeesaeeesaeeesaeessusesessueesseseseeeeseetess 71 4 14 Thermal protector backup heater QIL oo eccccceeseccceceeeeeeeceseeceeeeeeeceseaeeceeeceeeeeesseeeeceeeaeeeeeeeesaueeeeseaaeeees 72 4 15 Invener POB ATOP gecetese ccs uthecet oatcietce cence eceotancti bediee eas GaincicsecS E EE EEEE A E EOE Sr aED a eaa EE 74 4 16 Water ilow sensor BIL susaseccasenceddleteceeesauwe saletanecitoacandutelesettad ngeszenstauaee andinwbegsecisdeebavenetennduucdstoaeecadansedeeedeeebanccstears 76 AI WN VINEN a sa A A E E E 78 PE S REDI cr E E AE E E EE 81 Te General Repair Procedures sssini iiin nini ara anA AA NEEE EE OE DREE EREE ENENDENI 81 1 1 Refrigerant handling procedures cccccccssssceccseseccessnseececeuueeeccausececsceuseeecseneeeessuseeecssauseeeesseeeeeessuseeessaaaeeees 81 1 2 PIDE WOK MOCC OURS S a imanta n AREE RE ae A EAR R gas EErEE E beta AEREE 81 To le Sa ata e A E E A E E R au sa seceeiates 82 1 3
61. 7 Remove the brine pressure relief valve 2 with coupling 6 13 01 14 Version 1 0 DAIKIN Page 111 ESIE13 03 Part 3 Repair Ground source heat pump 2 Unit specific repair procedures Figure 31 Replacing the brine pressure relief valve 1 1 Insulation 2 Brine pressure relief valve 3 Upper nut 4 Lower nut 5 Nut 6 Coupling Page 112 DAIKIN 7 Nut brine expansion vessel 8 Nut drain hose 9 Seal 10 Brine expansion vessel hose 11 Brine drain 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Figure 32 Replacing the brine pressure relief valve 1 SN a m a 1 Coupling 4 Glue remainder 2 Nut 5 Seals 3 Pressure relief valve Installation CAUTION If damaged replace the seals 5 INFORMATION When gluing the water pressure relief valve 3 to the coupling 1 make sure it is in the same angle as in figure 31 on page 112 1 Proceed in reverse order 2 Fill the brine circuit refer to To fill the brine circuit in the Daikin Altherma ground source heat pump Installer reference guide 2 2 12 Replacing the water pump 2 2 12 1 Preliminary actions 1 Switch off the Daikin Altherma GSHP via the user interface 2 Remove the front panel refer to Removing the front panel on page 83 3 Remove the switch box cover refer to Removing the switch box cover on page 87 4 Unlock the power input
62. 98 83 EC of the heat exchanger may be required at certain intervals If the applicable legislation requires a chemical disinfection in specific situations involving the domestic hot water tank please be aware that the domestic hot water tank is a stainless steel cylinder containing an aluminium anode We recommend to use a non chloride based disinfectant approved for use with water intended for human consumption Page 150 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 4 Maintenance 2 Maintenance procedures 2 10 Checking the Switch box Actions Remarks Using an ohmmeter check for correct operation of contactors Refer to Backup heater E1H E2H on page 53 K1M K2M K3M and K5M All contacts of these contactors must be in open position when the power is turned OFF Carry out a thorough visual inspection of the switch box and look for obvious defects such as loose connections or defective wiring 13 01 14 Version 1 0 DAIKIN Page 151 Ground source heat pump ESIE13 03 Part 4 Maintenance 2 Maintenance procedures Page 152 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 5 Appendix 1 Field settings Part 5 Appendix 1 Field settings For more information refer to table on next pages 13 01 14 Version 1 0 DAIKIN Page 153 ESIE13 03 Part 5 Appendix Field settings table Breadcrumb Field code Setting name User settings L Preset value
63. AER DEA AOE DRA 86 PROMMOVINIG INGO HANE spisar a E T AE E AE TE EEE A 86 Removing the switch DOX COVED osiecccsesssecevincecashcadnewuntuainastdntanscandebeedepordinetilaqnnedvuedaseadahbuid qa hac danaa EAA AREE Ear dened aia 87 Opening the sound insulation of the heat pump module n a nnnnnnnnennannannnnnnnnnnnnrrrnnnsnnnnrnnrnrrrnrrsnrnnrnnrnnrrnrrnnrnnrnnreneene 88 Unlocking the pivoting power input section 2 0 0 ccc ccc eccccececeeeeeeee ce eeeee eee eeseeeeseeeeeeeeaeeeseeesa esse eesaeeseeeeseeeseeeseueeaeesaeeeses 89 Removing the lower rear panel ccccccceccsseccscecceceueceueecaeecsueceueceucecaeeceueceueesaeeceueceaeesaeesseessacessuesageesaeesaueseaeeneeess 91 pie 2 hel 06 BAT 2 all PE arene me ieee Dre ne AE E aa ee ee eee ee ee 92 BS ACI NS FR ee irna E oe ci essere wien als testator E EE base wsce ues 93 Replacngine ASP POB sesimin nan raar AR EREE A EAEE DEARER A AEE NEENA AERA EEE jeans A EEE 94 Bio 9 2 el g e Mia oay 200 ae ad aeniea E A E E E eee ee 95 PO IAC ING TS P COD aren are EAEE E EEA ENA AAR E AE EAA EE 96 cleanin Une MINS TIN OR sope A A EE E E EEA EE EA 97 Bine ikter NsStalatoi oc onncdectinamenacsentncaseeassee deesemaes ee a e ataa Ae AORE Reio EE eA A EAE DAE DAE E EAE 98 Gleaning De water er s sncccressccsancese dennaii eaa i EE EAEE EE seco AERE 99 Water ker installato ye nectar erate annA EAR AEE DEAE EAEE EA AAEE AAEE EEA EER AEAEE ENANTA 99 Replacing th brine TOW SWItCP ceccsscicerete
64. Correct brine field circuit Refer to the cuit Installer Reference Guide or to the Data Book for pump characteristics Brine field piping is blocked Check for possible blockage blockages can be checked by measuring the refriger ant pipe temperature Sudden drop in temperature could indicate a blockage remark this is not valid for the expansion valve Brine filter is blocked Check brine filter Clean brine filter see page 96 Check brine quality and possible source of dirt Faulty flow switch refrigerant brine PCB Check flow switch see page 62 Replace flow switch see page 100 or A9P replace PCB A9P see page 94 If flow switch failed due to contamination check for source of contamination and consider to install an additional filter Faulty brine pump refrigerant brine PCB Check brine pump see page 63 Replace brine pump see page 103 or AQP replace PCB AQP see page 94 If brine pump failed due to contamination check for source of contamination and consider to install an additional filter 2 12 E9 Expansion valve abnormality Trigger Effect Reset le Via user interface power reset might be necessary in case no common power sup ply was cause No continuity of expansion valve Minimum expansion valve opening and suction superheat lt 4 K and discharge superheat lt 5 K Unit will stop operating Possible cause Check Corrective action No common power suppl
65. D OB R O 2 A 8 D 0C R O 0 A 8 D OD R O 0 A 8 D 0E R O 0 A 8 E 00 Which type of unit is installed R O 5 Ground source A 8 E 01 R O 1 16 A 8 E 02 R O 1 Type 2 A 8 E 03 R O 2 A 8 E 04 Is the power saving function available on the outdoor unit R O 0 No A 8 E 05 R W 1 A 8 E 06 R O 1 A 8 E 07 R O 1 A 8 E 08 R O 0 A 8 E 09 R W 0 A 8 E 0A R O 0 A 8 F 00 Pump operation allowed outside range R W 0 Disabled 1 Enabled A 8 F 01 R W 20 A 8 F 02 R W 3 A 8 F 03 R O 5 A 8 F 04 R W 0 A 8 F 05 R W 0 A 8 F 06 R W 0 A 8 F 09 Pump operation during flow abnormality R W 0 Disabled 1 Enabled A 8 F 0A R W 0 A 8 F 0B Close shut off valve during thermo OFF R W 0 No 1 Yes A 8 F 0C R W 1 A 8 F OD What is the pump operation mode R W 0 Continuous 1 Sample C 07 0 2 Request C 07 0 i i This setting is not applicable for this unit Do not change the default value Page 156 Ground source heat pump DAIKIN 1 Field settings 13 01 14 Version 1 0 ESIE13 03 Part 5 Appendix 2 Wiring diagrams 2 1 Wiring diagram 1 13 01 14 Version 1 0 POSITION IN SWITCH BOX A lt Ground source heat pump Figure 71 Wiring diagram 1 switchbox layout LEGEND pescription main Pce hya user interfaces thermostat PC power circuit A A A A A A n A A10P main PCB inverte
66. E factor R W 0 6 step 0 1 A 8 2 01 Should the disinfection function be executed R W 0 No 2 5 1 Yes A 8 7 04 R W 0 A 8 2 02 When should the disinfection function start R W 0 23 hour step 1 hour A 8 7 05 Boiler efficiency R W 0 Very high 23 1 High A 8 2 03 What is the disinfection target temperature R W 60 C 2 Medium A 8 2 04 How long must the tank temperature be maintained R W 60 min 3 Low A 8 2 05 Room antifrost temperature R W 4 16 C step 1 C 4 Very low 12 C A 8 8 00 Minimum running time for domestic hot water operation R W 0 20 min step 1 min A 8 2 06 Room frost protection R W 0 Disabled 5 min 1 Enabled A 8 8 01 Maximum running time for domestic hot water operation R W 5 95 min step 5 min A 8 2 09 Adjust the offset on the measured room temperature R W 5 5 C step 0 5 C 30 min 0 C A 8 8 02 Anti recycling time R W 0 10 hour step 0 5 hour A 8 2 0A Adjust the offset on the measured room temperature R W 5 5 C step 0 5 C 0 5 hour 0 C A 8 8 03 R W 50 A 8 2 0B What is the required offset on the measured outdoor temp R W 5 5 C step 0 5 C A 8 8 04 Additional running time for the maximum running time R W 0 95 min step 5 min 0 C 95 min A 8 3 00 Is auto restart of the unit allowed R W 0 No A 8 8 05 Allow modulation of the LWT to control the room R W 0 No 1 Yes 1 Yes A 8 3 01 R W 0 A 8 8 06 Leaving water temperature maximum modulation R W 1 5 C step 1 C
67. EE E 15 4 1 Interactive information TOW c252 0 2 22cqcesascacaciacanbenseindsccenancedandacaeeabonnelacseaassusenaaacneedeeuenacadsieseadeddacaratecanencaiansaasaes 15 4 2 Parts of the DOOK eseese neiere iea E Ara ERS EA ARRA EES EARS EEEE ence r ERRIAN EE 16 4 2 1 The introduction chapter 2 0 cecccceceeceeeeeeeeeeeeeesaeeeeeeeeeeeeeeseeeeseeeesaeeeseeceseeeesseeeseaeeeseaeessaeeesaeeesaeeesaeeesanes 16 4 2 2 The troubleshooting chapter 5 sconcceadesasendanscnbedacedornscabedawnseehdsctessionsbec datsteeceasaedeeteucesadeehedemmcsnseatooedeaceneeuned 16 4 2 3 The repair chapter cece ceeccccecccsseecceeeecuuccceueecsececeucecsueessueeesaueesaueeseueessueesaueeseucessuseessaeessaeeeseueessusessaeesaaes 16 4 2 4 The maintenance chapter ccccccsccccececcseccceececeucecsucesueecsucessueeesaeeeseueesaeeesueeessueesaueeeseaeessaeeessusessueessaes 16 d An 48 8 gt 6 21g no e ED oan a aa 16 Ao SOWA IMMOMMANO MD asea sE EEE EEEa 16 Part 2 Troubleshooting s nsssnsnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nnmnnn nnne 17 Me MOP OCS cerra a E E A EEEE A A AE E AEE sae EAE sings deez ee 17 1 1 HOW to retrieve error codes ou cece cecccceccceeeecee cece cece cece eee eee eeeeseeeeseeeeseeeeseeeseaeeesaeeeseeeeseeaeeseeeessaeeseeeeseeeeseeeees 17 1 2 FOW WO SSC eV Ol COCs saisi ieai eieaa cece cers pet Se ti ete E sto ecient gti eat ctiecer eee 18 1 3 History Of err
68. Error code based troubleshooting 2 2 7 L1 Refrigerant brine PCB abnormality Trigger Effect Reset Refrigerant brine PCB detects current Unit will stop operating Via user interface power reset might be voltage errors required Possible cause Check Corrective action Power supply is not OK gt imbalance Check power supply for voltage fluctua Voltage fluctuations should be less than gt 10 tions gt 10 10 Compressor wiring is not OK Check connection of the compressor Correct the UVW wiring see page 117 UVW wiring see page 117 Faulty refrigerant brine PCB AQP Check if the alive led is blinking in regular If not blinking in regular intervals replace intervals the PCB see page 94 External factor e g electrical noise Check for source which could cause elec cause when error is reset after power trical interference reset and error happens again after awhile 2 28 L4 Radiation fin temperature abnormality Trigger Effect Reset Inverter PCB detects fin temperature Unit will stop operating Via user interface above 85 C Possible cause Check Corrective action Bad connection heat sink to inverter PCB Check connection between refrigerant Restore thermal connection between ther piping and heat sink of inverter PCB mistor and heat sink see page 143 Faulty thermistor R10T inverter PCB Check thermistor R10T see page 57 Replace thermistor R10T see page 143 A10P or
69. Fill the brine circuit refer to To fill the brine circuit in the Daikin Altherma ground source heat pump Installer reference guide 2 2 8 Replacing the backup heater 2 2 8 1 Preliminary actions 1 Switch off the Daikin Altherma GSHP via the user interface 2 Remove the front panel refer to Removing the front panel on page 83 3 Remove the switch box cover refer to Removing the switch box cover on page 87 4 Unlock the power input section refer to Unlocking the pivoting power input section on page 88 5 Drain the water circuit refer to Draining the water circuit on page 85 Page 104 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures 2 2 8 2 Procedure INFORMATION Note the position of the backup heater water pump pressure relief valve and the corrugated pipe After installation of the backup heater it must be possible to remove the thermal protector backup heater without removing the backup heater Removal 1 Turn the pivoting power input section 3 to the left refer to Unlocking the pivoting power input section on page 88 2 Loosen the lower nut 1 from the corrugated pipe 2 3 Remove the seal 3 from the corrugated pipe 2 4 Loosen the nut 4 that fixes the water manometer to the water pressure relief valve 5 5 Remove the clip 6 that fixes the backup heater 8 to the domestic hot water circuit CAUTION A The ba
70. K UP HEATER n pare ive 2 Check procedure Mechanical check 1 Check that the arrow on flow sensor B1L matches the flow direction arrow must point to the left Electrical check 1 Switch off the Daikin Altherma GSHP via the user interface 2 Remove the switch box cover refer to Removing the switch box cover on page 87 3 Power the Daikin Altherma GSHP 4 Activate Installer level on the user interface refer to Installer Level Settings on the user interface are available in the Installer Reference Guide paragraph To access the most used commands 5 On the user interface select Actuator test run A 7 4 6 On the user interface activate the water pump A 7 4 6 7 On the user interface select Flow Rate 6 1 8 8 The displayed flow rate must be between 10 and 40 minute INFORMATION The flow sensor B1L connector must be plugged into X4A on PCB A01P Page 76 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 4 Component checklist 9 If the measured voltage is outside the expected range replace water flow sensor B1L refer to Replacing the water flow sensor on page 102 if the measured voltage does not correspond with the displayed flow on the user interface replace PCB A1P refer to Procedure replacing the A1P PCB on page 91 divin Flow sensor B1L min 50 40 30 20 output voltage V 0 0
71. M 4 6 and K1M 2 6 all voltages must be 400 VAC 10 If voltage are OK on pins 2 4 6 but not on pins 1 3 5 replace K1M Confirm correct operation of F1B Between F1B 1 3 F1B 3 5 and F1B 1 5 all voltages must be 400 VAC 10 Between F1B 2 4 F1B 4 6 and F1B 2 6 all voltages must be 400 VAC 10 If voltage are OK on pins 2 4 6 but not on pins 1 3 5 replace F1B Page 56 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 4 Component checklist 4 3 Thermistors R1T R2T R3T R4T R5T ROT R10T Technical specification Description 3 different types of thermistors are used the resistance vs temperature charac The thermistors are used to measure the temper teristic for the each type is shown in Table 2 2 on page 59 ature at multiple locations inside the Daikin Altherma GSHP The measured temperatures are processed by the A1P board Location Wiring diagram Switch box A1P X5 X6 X7 X8 X9 O Aw AA n Ui Ne u Z 22 Lvs gt x lt oa Check procedure Mechanical check 1 Switch off the Daikin Altherma GSHP via the user interface 2 Locate the thermistor and check if thermal contact with the piping or ambient is ensured Electrical check INFORMATION If a thermistor check fails replace the thermistor Thermistors R2T R3T R4T RST AP9 must be replaced together If
72. Name and address of fire department police and hospital e Name address and day and night telephone numbers for obtaining service In Europe EN378 provides the necessary guidance for this logbook 2 1 Meaning of symbols WARNING Indicates a situation that could result in death or serious injury WARNING RISK OF ELECTROCUTION Indicates a situation that could result in electrocution WARNING RISK OF BURNING Indicates a situation that could result in burning because of extreme hot or cold temperatures WARNING RISK OF EXPLOSION Indicates a situation that could result in explosion WARNING RISK OF POISONING Indicates a situation that could result in poisoning 13 01 14 Version 1 0 9 DAIKIN Page 9 Ground source heat pump ESIE13 03 Part 1 Introduction 2 Safety precautions CAUTION Indicates a situation that could result in equipment or property damage INFORMATION Indicates useful tips or additional information 2 2 Warnings gt WARNING A Improper installation or attachment of equipment or accessories could result in electric shock short circuit leaks fire or other damage to the equipment Only use accessories optional equipment and spare parts made or approved by Daikin gt WARNING A Make sure installation testing and applied materials comply with applicable legislation on top of the instructions described in the Daikin documentation gt WARNING A Make sure the wo
73. O d Q2DI power suppl z Q TE Bes bos x2 Sag y i ii AA X6YB i f i i X6YA gt X2M ij E ec ee le 7 g o d o H 7 3 P X803A 5 A9P X803A 3 AOP X803A 5 WwW j RIT RIH RIT RIH A Ea TT X2M 3 gt 7 PX2M 21 t H20 t H20 ee X2M 4 a l ee ee ee E E ee eed X2M 28 only for ext i ty baa only for ext a ae sensor On OFF thermostat sensor x floor or i floor or x2M 5 617 m Switch box ambient jj ambient E KIM K2M i ii pacer al NO Sai a i o ma eS mel eee i jji M2S M3S 2 A inrush 230 V AC L J 3 wire type M iP MS M2P 1 A continuous if 3 NO valve SPDT i l Il AIJ j ji if WATER DHW pump Heatpump convector Heatpump convector pg 1 aul Se a Al Y Main LWT zone Add LWT zone Zz l X I x lt Shut off valve 13 01 14 Version 1 0 DAIKIN Page 159 Ground source heat pump ESIE13 03 Part 5 Appendix 2 4 Wiring diagram 4 Figure 74 Wiring diagram 4 PCB A9P A10P L1 L2 L3 Nt or i 400 V AC ts estate eee ee J 2 mee fp Zo outdoor ambient 5 F 2 i PEENE e nn E i sensor A1P X19A 1 A1P X19A 3 A1P X19A 5 F1B 2 F1B 4 F1B 6 ima A10P X4A RENNI RED H1P H3P H5P H7P QBBHVHBOHLBH HAP H2P H4P H6P ISwith eS e RE ll E box a el 1 p fof alot
74. OFF 2 C H request A 8 C 06 What is the thermo request contact type for the add zone R W 1 Thermo ON OFF 2 C H request A 8 C 07 What is the unit control method in space operation R W 0 LWT control 1 Ext RT control 2 RT control A 8 C 08 Which type of external sensor is installed R W 0 No 1 Outdoor sensor 2 Room sensor A 8 C 09 What is the required alarm output contact type R W 0 Normally open 1 Normally closed A 8 C 0A R O 0 A 8 C 0C R O 0 A 8 C OD R O 0 A 8 C OE R O 0 A 8 D 00 Which heaters are permitted if prefer kWh rate PS is cut R O 0 None A 8 D 01 Contact type of preferential kWh rate PS installation R W 0 No 1 Active open 2 Active closed A 8 D 02 Which type of DHW pump is installed R W 0 No 1 Secondary rtrn E 06 1 2 Disinf Shunt E 06 1 A 8 D 03 Leaving water temperature compensation around 0 C R W 0 Disabled 1 Enabled shift 2 C from 2 to 2 C 2 Enabled shift 4 C from 2 to 2 C 3 Enabled shift 2 C from 4 to 4 C 4 Enabled shift 4 C from 4 to 4 C A 8 D 04 Is ademand PCB connected R W 0 No 1 Power consumption control A 8 D 05 Is the pump allowed to run if prefer kWh rate PS is cut R W 0 Forced off 1 As normal A 8 D 07 Is a solar kit connected R O 0 No A 8 D 08 Is an external kWh meter used for power measurement R W 0 No A 8 D 09 Is an external kWh meter used for power measurement R W 0 No A 8 D 0A R O 0 A 8
75. Removal 1 Loosen and remove the 4 screws 1 that fix the bracket 2 on the rear side 2 Remove the bracket 2 3 Open the sound insulation 3 at the rear of the heat pump module by pulling the velcro strips 4 4 From the rear side pull the velcro strip 5 of the compressor top insulation Figure 38 Replacing the compressor 1 1 Screw 4 Velcro strip 2 Bracket 5 Velcro strip compressor 3 Sound insulation 5 From the front side release the 3 velcro strips 1 on the compressor insulation 3 and open the compressor insulation 3 Page 118 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Figure 39 Replacing the compressor 2 1 Velcro strip 3 Compressor 2 Compressor insulation 6 From the rear side remove the compressor insulation 7 Remove the compressor wiring cover 1 8 Unplug the 3 wires 2 3 4 from the compressor Figure 40 Replacing the compressor 3 1 Compressor wiring cover 3 White wire V terminal 2 Red wire U terminal 4 Blue wire W terminal 13 01 14 Version 1 0 9 DAIKIN Page 119 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures CAUTION A e Use welding blankets and cooling clamps to protect the components that surround the compressor e Cutthe compressor refrigerant pipes as close to the compressor as possible to be able to re use
76. SIE13 03 Part 2 Troubleshooting 2 Error code based troubleshooting 2 2 AH Disinfection operation error Trigger Effect Reset Disinfection setpoint is not reached or not Unit will continue operating Auto reset when next disinfection is com kept for requested time pleted Possible cause Corrective action Large hot water quantity has been tapped Check when the disinfection is scheduled Adjust schedule timer and or related set during before disinfection schedule it when there is little chance tings Refer to the Installer Reference that water will be tapped so that the disin Guide fection can finish in time Backup heater is restricted during disin Check the backup heater settings 2 00 Adjust related settings Refer to the fection till 2 04 Refer to the Installer Reference Installer Reference Guide Guide Faulty water tank thermistor R5T hydro Check thermistor R5T see page 57 Replace thermistor R5T see page 141 or PCB A1P hydro PCB A1P see page 91 2 3 A1 Hydro PCB abnormality Trigger Effect Reset Hydrobox PCB A1P detects EEPROM is Unit will stop operating Via power reset via user interface abnormal Possible cause Check Corrective action Faulty hydro PCB A1P Check if the alive led is blinking in regular If not blinking in regular intervals replace intervals the PCB A1P see page 91 2 4 CJ 02 User interface room temperature error Trigger
77. T see page 57 Check discharge thermistor R2T see page 5 7 Activation of the protection function can be caused by var ious reasons therefore we recommend to check the fol lowing e Check high pressure sensor see page 69 Check high pressure side plate type heat exchanger for see page 66 good water flow and heat exchange Check the refrigerant charge Check if saturated high pres sure temperature is within range to heat up the water to the required temperature DAIKIN Corrective action Correct the UVW wiring see page 117 Corrective action Based on the diagnosis exe cute one of the following actions e Correct the refrigerant charge total charge 1 8 kg Replace expansion valve see page 131 page 133 or suction thermistor R3T see page 141 Replace discharge thermistor R2T see page 141 Based on the diagnosis exe cute one of the following actions e Replace high pressure sensor see page 135 Optimize the waterflow through the high pressure side plate type heat exchanger Correct the refrigerant charge total charge 1 8 kg Page 49 Ground source heat pump ESIE13 03 Part 2 Troubleshooting Possible failures Compressor M1C frequency limited suction pipe super heat protection function active Root cause This protection control acti vates when suction superheat is gt 10 C and expansion valve is fully open 480 pulse Unit returns to normal o
78. TION REPORT Key person info Your contact details Phone number E mail address Site address Your reference Date of visit Claim info Problem description Problem frequency Investigation steps done Current situation solved not solved Countermeasures taken Comments and proposals Part available for return if applicable Application info Application house apartment office New project or refurbishment Heat emitters radiators under floor heating fan coils Hydraulic layout simple schematic Unit Installation info Model name Serial number Installation commissioning date Software version hydro PCB Software version user interface Software version outdoor PCB Minimum water volume Maximum water volume Brine composition and mixture Brine freeze up temperature Space heating control leaving water temperature room thermostat ext room thermostat Space heating setpoint Domestic hot water control reheat only schedule only reheat schedule Domestic hot water setpoint Provide pictures of the field settings overview viewable on the user interface
79. Tie wrap 6 Screw 2 Thermal protector backup heater capillary 7 Backup heater 3 Thermal protector backup heater 8 Wire terminal 4 Screw 9 Grommet 5 Thermal protector backup heater bracket 13 01 14 Version 1 0 7 DAIKIN Page 107 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Installation 1 Proceed in reverse order 2 2 10 Replacing the water pressure relief valve 2 2 10 1 Preliminary actions 1 Switch off the Daikin Altherma GSHP via the user interface 2 Remove the front panel refer to Removing the front panel on page 83 3 Remove the switch box cover refer to Removing the switch box cover on page 87 4 Unlock the power input section refer to Unlocking the pivoting power input section on page 88 5 Drain the water circuit refer to Draining the water circuit on page 85 2 2 10 2 Procedure INFORMATION Note the position of the backup heater water pump water pressure relief valve and the corrugated pipe After installa tion of the backup heater it must be possible to remove the thermal protector backup heater without removing the backup heater Removal 1 Turn the pivoting power input section 3 to the left refer to Unlocking the pivoting power input section on page 88 2 Loosen the lower nut 1 from the corrugated pipe 2 3 Remove the seal 3 from the corrugated pipe 2 4 Loosen the nut 4 that fixes the water manometer capillary t
80. Y DAIKIN Service Manual Ground source heat pump EGSQH10818AA9W Ground source heat pump ESIE13 03 The present publication is drawn up by way of information only and does not constitute an offer binding upon Daikin Europe N V Daikin Europe N V has compiled the content of this publication to the best of its knowledge No express or implied warranty is given for the completeness accuracy reliability or fitness for particular purpose of its content and the products and services presented therein Specifications are subject to change without prior notice Daikin Europe N V explicitly rejects any liability for any direct or indirect damage in the broadest sense arising from or related to the use and or interpretation of this publication All content is copyrighted by Daikin Europe N V Page 2 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Table of contents PANE We IMLPOGUCTIOND srr E E anes ecuuewaiiewicuniueuers oc EE 9 Mh WOT SN ONNMOG eA EE E datos EEE E E 9 Dx E E E S S ase E E S E S E O A S E E O AEN TOE O T EET ET 9 Dive WEANING Ol S DOl se a a a a E a a ounsaebeeasae 9 22x NA a E S E E E E E E 10 Z AOE a E E E E E eee testis ecm 11 PAE Ean ea i E A EE E E E TETE ieee E EE EE A T E T E 12 3 General operation of ground source heat pump c cece ceccceeeceeeeeeeeseeeceeeceeeeeeeseueseeeseeeeseeeseeseeessneeaeeeees 13 A HOW O U e NIS DOOK aene A E EEEE A AEE dane EEE AEE EAE E
81. alve Replace air purge valve trapped in water system Root cause category component electrical High pressure sensor B1PH Deviation of pressure sensor Check high pressure sensor Replace high pressure sensor higher pressure measured higher value measured than see page 69 see page 135 than actual actual Discharge thermistor R2T Deviation of thermistor higher Check discharge thermistor Replace discharge thermistor AQP higher temperature temperature measured than see page 57 R2T see page 141 or replace measured than actual actual PCB AQP see page 94 Expansion valve K1E incor Faulty suction R3T Check thermistor R3T see Replace thermistor R3T see rect control superheat too thermistor page 57 page 141 or replace expan high Faulty expansion valve Check the expansion valve sion valve see page 131 control see page 71 page 133 Backup heater 3 6 kW not Component failure Check backup heater see Replace backup heater see working page 53 page 104 Deviation of backup heater Deviation of thermistor Check thermistor R2T see Replace thermistor R2T see outlet thermistor R2T in higher temperature page 5 7 page 141 or PCB A1P A1P will influence the backup measured than actual heater control Bad contact between sensor and pipe Flow sensor deviation flow Component failure Check the flow sensor Replace the flow sensor measured higher than actual 3 way valve blocked
82. at pump ESIE13 03 Part 2 Troubleshooting 4 Component checklist LED Status Meaning Diagnostic Cause Corrective action Lights green Pump in operation Pump runs according to its setting Blinks green fast PWM model Pump in Pump in stand by Pump in stand by Normal operation Normal operation Blinks red green Pump in operation Pump will restart after Undervoltage U lt 160 V a voltage supply but stopped fault is solved or 195 V lt U lt 253 V overvoltage U gt 230 V Module overheating Check water and ambi motor temperature too ent temperature high Blinks red Pump malfunction Pump stopped blocked Pump does not restart Replace pump automatically due to permanent failure No power supply No voltage present on Pump is not connected Check pump wiring electronics to power supply LED is broken Check if pump is run ning Pump electronics mal Replace pump functioning 9 Ifthe LED does not light Check fuse FU1 on A1P replace if blown Measure the voltage at X16A pin 3 5 on A1P PCB the voltage must be 230 VAC 10 if not replace A1P 10 Replace the water pump M1P refer to Replacing the water pump on page 113 4 9 Plate type heat exchanger PHE1 PHE2 Technical specification Description The plate type heat exchanger uses metal plates to transfer heat between two The plate type heat exchanger PTH 1 transfers fluids This improves the heat exchange as the fluids are exposed to a much the heat from the
83. ater operation mode 6 0D is set to 0 reheat only This will cause the system to work too fre quently in domestic hot water operation and less in space heating Root cause category component electrical Deviation of backup heater outlet thermistor R2Tin A1P will influence the backup heater control Deviation of thermistor lower temperature measured than actual Bad contact between sensor and pipe Root cause category system design Water circuit requested capacity too high causing the system always to run at full capacity Incorrect system selection 3 Symptom based troubleshooting Check setting 5 01 Check setting 6 0D in combi nation with the re heat setpoint 6 0C Check thermistor R2Tin see page 57 Check required capacity by heat load calculation Refer to the capacity tables in the engi neering databook to know max system capacity at indi cated conditions 3 9 Increased sound level brine pump Possible failures Root cause Root cause category installation Brine pressure too low Brine pressure not checked during filling Air was purged from the brine system after filling Check brine pressure Corrective action Change setting 5 01 to less quickly allow backup heater operation It is advisable to set to factory setting reheat schedule and program the schedule to heat the domestic hot water during periods of no space heating required If re
84. ater temperature When the domestic hot water function is activated the 3 way valve will switch over to the domestic hot water tank and space heating side is closed Domestic hot water and space heating cannot be active simultaneously The 3 way valve will switch back to space heating when domestic hot water setpoint is reached or when running timers are finished refer to the Installer Reference Guide for more details When the unit receives a thermo off signal e The compressor will stop its operation e The brine pump will operate for another 45 seconds pressure equalization and eventually stop e The water pump will operate for some minutes and eventually stop or start sampling Page 14 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 1 Introduction 4 How to use this book 4 How to use this book 4 1 Interactive information flow This Daikin product Service Manual is intended for professional use only The actions described hereafter are only to be performed by qualified and certified persons taking into account the safety precautions mentioned in this manual and the local regulations as well By following the diagram below the reader can find the relevant information related to his her task The digital pdf version of this book allows direct page access through all active links When Adobe Acrobat Reader is used the lt Alt gt lt Back Arrow gt keys can be used to return to the previously viewed
85. ater system and e Check if air purge valves backup heater are installed on all highest points of the field installed water circuit Water pressure too low Water pressure not Check water pressure Adjust water pressure if checked during filling required 1 2 barg Air was purged from the water system after filling e Leakage Water circuit partially blocked Obstruction in the water sys Check water circuit for block Remove possible blockages tem ages and check the water quality Root cause category component mechanical Water pump M1P mechani Internal pump friction Check water pump see Replace water pump see cal problem page 65 page 113 Air Purge AP blocked air Component failure Check air purge valve Replace air purge valve trapped in water system 3 11 Increased sound level compressor Possible failures Root cause Corrective action Root cause category parameter setting Capacity boost setting A 03 Capacity boost setting A 03 Check setting A 03 activated is set to 1 Compressor can run at 193 Hz instead of 148 Hz Unit will deliver 12 kW instead of 10 kW Due to the higher rotation frequency the compressor will make more noise Root cause category component mechanical Compressor M1C increased Bad lubrification of No checks possible Replace compressor bearing friction bearing failure compressor internal rotating parts Compressor at end of lifetime Root cau
86. bnormal value open or short circuit Possible cause Check Corrective action Faulty brine outlet thermistor R6T Check thermistor R6T see page 57 Replace thermistor R6T see page 141 or refrigerant brine PCB AQP PCB AQP see page 94 2 25 LC Transmission system abnormality Trigger Effect Reset No transmission between refrigerant brine Unit stops operating Auto reset PCB AQP and inverter PCB A10P Possible cause Corrective action Internal wiring is not OK A9P lt gt A10P Check if wiring between PCB A9P and Correct wiring inverter PCB A10P is correct refer to wir ing diagram Faulty refrigerant brine PCB AQP Check if the alive led is blinking in regular If not blinking in regular intervals replace intervals the PCB AQP see page 94 Faulty inverter PCB A10P Check inverter PCB A10P see page 74 If faulty replace inverter PCB A10P see page 95 External factor e g electrical noise Check for source which could cause elec cause when error is reset after power trical interference reset and error happens again after awhile 2 26 LH Converter attention Trigger Effect Reset Current sensor on refrigerant brine PCB Unit will continue operating Auto reset AQP is broken Possible cause Check Corrective action Faulty PCB A9P E Replace PCB AQP see page 94 Page 28 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 2
87. c ctsreisecrcieasticeneenataiecedosestjeaiiciecieane ddcsan tis aeae oneisdabannetlvcactiadespebeedencenbatecedeueedtaecntecene 86 2 1 9 Removing the switch box cover ccccccccssecccceeeeceeeeeceaseecceeeesseueeeceaesecsseceseasseeseseeeseaeeessasesessaseeesaeesees 87 2 1 10 Opening the sound insulation of the heat pump module front side only cecceeeseeeeeeeeeeeeeeeeeeeeeeeeens 87 2 1 11 Unlocking the pivoting power input section cccccccccceeeeeceeeeeeceeeeeeaaeeeeceeeecsaueeesseeeeseceeessceeeesaneeessneeees 88 2 2 Parts replacement procedures cc ccissscccatazdasdeucaciedsneocsazccndenesanndceendasiwencaneanne vaidensincntanevainsdactnacdentitepracdesnat trades 90 2 2 1 Removing the lower rear panel xcceccedssascessadsamacoucedasdecmandanedecaedbaebanseeydcaunsanpscsvacaudanbpneewseensaedaensedsonteaetecccaae 90 2 2 2 Replacing a PCB in the switch bOX i sccacsiccincosaniedansusdintenasuhoarsialienasasdasdneneucassads ardneusdddaelebonenotsdetacdecdeessabtarcionte 91 2 2 3 Cleaning the brine filter scseticesins si sackafepcondaantdeesiatnadessoedacntabiseccatendagoageniaiseds beoahesssdbwcedustyierddussdntaninrbeussccsenians 96 2 2 4 Cleaning the water filter sciccncassocewcensveesterecaaanculubictdanccesubactdmcadosatinbsatuiecinaen ccesudeononnhdesnenunacasuadeexeusdesaeutbensusde 98 2 2 5 Replacing the brine flow switch ccccccssecccceseeecececceeeeeceeseeecseeseecseeeecsusecesaaeeecsu
88. cal regulations e Make sure the correct amount factory additional where required of refrigerant is charged after repair e Make sure to use the appropriate equipment and tools according to the refrigerant and unit type e Charge non azeotropic refrigerant e g R 410A always in a liquid state e Make sure to use a digital scale no charging cylinder e Execute correct vacuum drying procedure after repair work 0 1 MPa 760 mmHg 750 Torr for at least 1 hour Use both gas and liquid pipe connection Use related field setting where necessary Refer to Refrigerant Handling on page 84 1 2 Pipe work procedures e Make sure to cover open pipe ends during work so no dust or moisture can enter e Make sure to re apply insulation removed during repair e Pipe expansion flare making Remove any burrs on the cut surface and use correct tool such as reamer or scraper note that excessive deburring can thin the pipe walls and cause cracking of the pipe Make sure the flare has the correct size use a flare gauge Make sure no particles remain in the piping Apply refrigerant oil on the inner surface of the flare Make sure the flare connection is tightened with the correct torque torque values refer to installation manual e Brazing Use correct brazing tool Use a phosphor copper filler metal silver composition of 0 to 2 Do not use flux material Use nitrogen replacement in order to p
89. cccscccsceceeeceucceucecueeceeceueesuecsuecseecuuecaueesaeesaeesseeseeesueesaeesseessueeseeesnans 122 Replacing the 3 way valve motor 1 cccceccseccececseeceeeceeeceucecaeccueeceeessaeececsueesaeecaueesaeesaeesaeeseeeesseesaeeeeeessueesaeesages 124 Replacing the 3 way valve motor 2 cccceccsecceseecececeeeceeceucececcueeseeeceeesuecsueesuesaueesaeesaeesauesueesaeesaeesseesseeeseeesaees 124 Replacing the 3 way valve motor 3 wecgecnctse ae csnccexcnstmnsleeed anscnneeesmicsnerenaveaseceasiecaite sehen snteannscesaesdeeiebsecteuseamadineveheameresee 125 Replacing the 3 way valve motor 3 0 ccceeccseccescecececeeeceueceucecaeccaeeceueeeaeesecsaeesauesaueesaeesaeeseecsueesseesaeeeeeessueeseensaes 125 Replacing the 3 way valve motor 4 0 ccceeccseccsscecececeecceueceucececcueeceuessaeececsueecaeesaueesaeesaeeseecueesseesaeeeeeeesaeeseensages 126 Replacing the 3 way valve body scencxtsencasoveseendaneveebecacdewendandsaned wantcnntalvosdindieeredaainald ser denectlnnen ndnband sence acing cindnc tense dentanuiednacies 127 Replacing the water manometer 1 ccccecceeccsseceeeceececacecececeueceueceueecseccauecaeesaeessueesauesauecseessueesueesaeeeseessueeseeesnans 128 Replacing the water manometer 2 ccccccccsecceeceesecaececececuceceueceuecsueecuuccaeecuesaueesueesaeesaeesaeecseeecseesaeeeeeessueesaeesnass 129 Replacing the brine manometer cccccccscccseccececenecaueceucesececsueceuecsaeesuecsuee
90. ceeesaueecaessaeesaeesaeeesaeesaeesaeeeeeessaeesaeesages 130 Replacing the electronic expansion valve K1E body 1 oo eccecccceecceeeceeeceeeeeeeeeeeese cess eesaeeeeeesseeeseeeseesseeeseeeeaees 132 Replacing the electronic expansion valve K1E body 2 oo eccccccccccceecceeeceeeeeeeceeeeee ees eeseeeseeeeseesseeeaeeeseeeseeeseeeenees 133 Replacing the electronic expansion valve K1E electromagnet ccccccceccseecceeeceeeeeeeseeeseeeeaeeeseeeseeesueeseeeseeeeaees 134 Replacing the electronic expansion valve K1E electromagnet ccccccceccseeeceeeceeeeeeeseeeseeeeseeeseeeseeesueeseeeseeeeaees 135 Replacing the refrigerant high pressure sensor 1 ou eee eccc seca eecee eee eeeeeeeeseeeeaeeceeeeseeeseeeseueseeeeseeeseeeseeeseeeseeeesees 136 Replacing the refrigerant high pressure sensor 2 ou ceecceecceeccseeceeeeceeeeeeeeseeeeeeeeaeecaeeeseeeseueseeeseueeseeeseeesueeseeeseeesaees 137 Replacing the refrigerant high pressure sensor 3 ou ceecc cece eeceeeceeeeeeeeeseeeseeeeeeeceueeseeeseeessueseueeseeeseeeesueeseeeseeeeaees 137 13 01 14 Version 1 0 9 DAIKIN Page 7 Ground source heat pump ESIE13 03 Replacing the refrigerant high pressure sensor 3 ou cece ceccseccseecceeeeeeeeseeeceeeseeeseeeeseeeaeeeseeesaeeeseeeseeeseeeseeeseeesseeeaaes 138 Replacing the refrigerant high pressure SWITCH 1 ou ee cecccceccceeeceeeceeeeeeeeeeeeeaeeeeeeeeeeeseeesaeeseeeeseeeseeesseeeaeeeseeeeaaes 139 Replacing the refrigerant hi
91. checklist 4 15 Inverter PCB A10P Technical specification Description The inverter PCB A10P is a 400 V 3 phase inverter The inverter PCB A10P drives the compressor Location Wiring diagram Switch box _ Check procedure Electrical check 1 Switch off the Daikin Altherma GSHP with the field supplied power circuit breaker 2 Remove the switch box cover refer to Removing the switch box cover on page 87 3 Disconnect X7Y and connect extension wire compressor SPP number 5008826 to X7Y and to the Inverter Analyzer SPP number 1368521 4 Power the Daikin Altherma GSHP WARNING Electrical shock hazard Do not touch life wires Page 74 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 5 Locate the LEDS on inverter PCB A10P press and hold BS1 for 5 seconds press BS2 twice press BS3 once press BS2 once press BS3 once press BS3 once PCB on page 95 Normal LED status entered monitor mode LED status after pressing BS2 twice LED status after pressing BS3 LED statu
92. ckup heater is still connected to the Daikin Altherma GSHP 6 Remove the backup heater 8 water pump 7 pressure relief valve 5 and the corrugated pipe 2 from the Daikin Altherma GSHP and lay it on a support 9 Figure 25 Replacing the backup heater 1 1 Lower nut Clip 2 Corrugated pipe Water pump 3 Seal Backup heater 4 Nut Support 5 Pressure relief valve 0 Pivoting power input section 13 01 14 Version 1 0 7 DAIKIN Page 105 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Remove the thermal protector backup heater 1 from the backup heater 6 Remove the backup heater wiring from behind X1M 2 Unplug the connectors X1H and X2H 3 Guide the wire with connector X2H 3 through the pivoting power input section bottom grommet 8 Guide the wire with connector X1H 3 through the pivoting power input section side grommet 9 Loosen the nut 4 that fixes the domestic hot water pump 5 to the backup heater 6 Remove the seal 7 Figure 26 Replacing the backup heater 2 1 Thermal protector backup heater Q1L 6 Backup heater 2 X1M 7 Seal 3 X1H X2H 8 Bottom grommet 4 Nut 9 Side grommet 5 Water pump Installation INFORMATION After installation the backup heater positioning must allow to remove the thermal protector backup heater without removing the backup heater If damaged replace the seals Proceed in rever
93. connector X1H Measure the voltage on contactor K2M A1 A2 The voltage must be 230 VAC 10 if no voltage is present check K2M A1 A2 wiring or replace A1P Measure the voltage on contactor K5M A1 A2 The voltage must be 230 VAC 10 if no voltage is present check the electrical conductivity of Q1L pin 11 12 and replace Q1L if pini1 12 not conducting 13 01 14 Version 1 0 DAIKIN Page 55 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 4 Component checklist Confirm correct operation of K2M Between contactor K2M 1 3 K2M 3 5 and K2M 1 5 all voltages must be 400 VAC 10 Between contactor K2M 2 4 K2M 4 6 and K2M 2 6 all voltages must be 400 VAC 10 If voltage are OK on pins 2 4 6 but not on pins 1 3 5 replace K2M Confirm correct operation of K5M Between K5M 1 3 K5M 3 5 and K5M 1 5 all voltages must be 400 VAC 10 Between K5M 2 4 K5M 4 6 and K5M 2 6 all voltages must be 400 VAC 10 If voltage are OK on pins 2 4 6 but not on pins 1 3 5 replace K5M Measure the voltage between X1H 7 8 X1H 8 9 and X1H 7 9 All voltages must be 400 VAC 10 If no voltage is present measure the voltage on K1M A1 A2 The voltage must be 230 VAC 10 if no voltage is present check K1M A1 A2 wiring or replace A1P Confirm correct operation of K1M Between K1M 1 3 K1M 3 5 and K1M 1 5 all voltages must be 400 VAC 10 Between K1M 2 4 K1
94. cteinttenseanccensadtanclens deedeesiouesnceanceesweadan sesinaiene utebasnseeiciath ne aaa aAa EAEEREN 101 Replacing the water flow Sensor ccccccssccsseccececececeueceueceacesueesaeeceuecsuecsaecsaeesauesaueesaeesaeeseessueecueesaeeeseessaeeseessages 102 Replacing iNe DINE DUMI isos bated ctesttsncea cies de neienictaen danse ae cde AT a D E asset E E iea 104 Replacing the backup heater 1 saceser nave dneesenncadiacnen sucaauaund stnbsanduanetisenes ndetan mameeantidasnctabobald dinndnibanindimekioeist o auenctuneladeitanulat nene 105 Replacing the backup h ater 2 aac cp cecetict erage as cescte tence a ee ereise seb nie EEE cee EE EAEN EAE Ea EEAO RD Eai 106 Replacing the thermal protector backup heater eee cceccceecceeecee cece eeseeeceeeeseeeseeeeeueeseeeseueseueeeueeseeeeseeeseeeseeeesees 107 Replacing the water pressure relief valve 1 0 ccccccccceecccececeeeceeeceeeeceeceuecaueecauecaueceueeseeeseesuecsueeseeesseeeseeesaeesaass 109 Replacing the water pressure relief valve 2 cccccccccccseccceccceeeceeeceueeceecuecaueeseecauecaueesaeeaueesuessueesaeeseeeesueeseeesaess 110 Replacing the water pressure relief valve 3 oo ccccccccccceeccceccceeeceneceneecseeceueceueeceesauecaueesaeesueesgecueeseeesseeesueeseensaass 110 Replacing the brine pressure relief valve 1 oo cece ccccceeccceeeceeeceeeceeeeseeseeeceeeeseeeseueseueeseeeseeeseeessaeeseeeeseeeseeeseeeeaees 112 Replacing the brine pressure relief valve
95. de residue is only possi remove the aluminiumhy ductivity can lead to acceler ble with endoscope droxides ated reduction of the anode in Check correct setting of the tank and aluminiumhydrox field supplied water ides will be formed on the bot softener in case installed tom of the tank Remark a not well controlled water softener can cause an increased amount of chlorides in the water 3 12 3 Bad odour from tapping water Possible failures Root cause Corrective action Root cause category installation Water circuit bad odour of Bad quality contamination of Check the water quality Assure that quality of entering supply water supply water odour contamination at cold water is OK domestic water inlet Page 48 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 3 Symptom based troubleshooting 3 13 Compressor related 3 13 1 Compressor does not start Possible failures Root cause Root cause category software control Compressor M1C does not start because water loop tem perature is too low Special software control acti vated Water loop tempera ture is too low lt 24 C causing only the backup heater to operate Compressor will start when water tempera ture reaches 24 C or more Compressor guard timer active Once compressor has stopped it takes 180 seconds before it can restart Compressor M1C guard timer active Root cause category
96. dependent control is acti vated Adapt room thermostat set point Remark check the weather dependent settings relation outdoor temperature set point in case weather dependent control is acti vated Space heating not activated Check if space heating is acti vated Root cause category parameter setting External room thermostat used with setting A 2 1 7 on value 2 user interface thermostat control Backup heater operation disa bled setting 4 00 is set to 0 Setting domestic hot water operation mode 6 0D not set optimally Wrong setting of A 2 1 7 unit control method Setting backup heater opera tion mode 4 00 is set to 2 only domestic hot water Setting domestic hot water operation mode 6 0D is set to 0 reheat only This will cause the system to work too fre quently in domestic hot water operation and less in space heating Check setting A 2 1 7 Check setting 4 00 Check setting 6 OD Adjust setting to match appli cation refer to installers refer ence guide Change setting 4 00 to 1 It is advisable to set to factory setting reheat schedule and program the schedule to heat the domestic hot water during periods of no space heating required Root cause category installation 3 way valve does not switch correctly between space heat ing connection and domestic hot water connection 13 01 14 Version 1 0 3 way valve incorrec
97. e 3 Purge the water circuit refer to 9 3 Air purge function on the space heating circuit in the Daikin Altherma ground source heat pump Installer reference guide 2 2 11 Replacing the brine pressure relief valve 2 2 11 1 Preliminary actions 1 Switch off the Daikin Altherma GSHP via the user interface 2 Remove the front panel refer to Removing the front panel on page 83 3 Drain the brine circuit refer to Draining the brine circuit on page 84 2 2 11 2 Procedure Removal INFORMATION Note the position of the brine pressure relief valve It is important that the brine pressure relief valve is mounted in the same position to ensure access to the brine pressure relief valve knob 1 Carefully remove the insulation 1 from the brine pressure relief valve 2 the insulation will be re used during installation 2 Loosen the upper nut 3 that fixes the brine pressure relief valve 2 3 Loosen the lower nut 4 that fixes the brine pressure relief valve 3 4 Remove the seals 9 from the upper and lower nuts 3 4 5 Loosen the nut 7 that fixes the brine expansion vessel hose 10 to the brine pressure relief valve 2 CAUTION Do not twist the brine drain 11 The brine drain 11 is glued to the brine pressure relief valve 2 6 Screw the brine pressure relief valve 2 with coupling 6 from the brine drain 11 CAUTION The brine pressure relief valve 2 is glued to the coupling 6
98. e 2 A1P PCB 6 Grommet 3 X16A 7 Water pump wire 4 Screw 8 Cable guide 11 Turn the pivoting power input section 3 to the left refer to Unlocking the pivoting power input section on page 88 12 Loosen the lower nut 2 from the corrugated pipe 3 13 Remove the seal 4 from the corrugated pipe 3 14 Loosen the nut 5 that fixes the water manometer capillary to the water pressure relief valve 6 15 Remove the clip 7 that fixes the backup heater 9 to the domestic hot water circuit CAUTION The backup heater 9 is still connected to the Daikin Altherma GSHP 16 Remove the backup heater 9 water pump 8 water pressure relief valve 6 and the corrugated pipe 3 from the Daikin Altherma GSHP and lay it on a support 10 13 01 14 Version 1 0 7 DAIKIN Page 115 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Figure 35 Replacing the water pump 3 1 Pivoting power input section 6 Water pressure relief valve 2 Lower nut 7 Clip 3 Corrugated pipe 8 Water pump 4 Seal 9 Backup heater 5 Nut water manometer 10 Support 17 Loosen the nuts 1 that fix the water pump 3 to the pressure relief valve 18 Remove the water pump 3 19 Remove the seals 2 from the nuts 1 Page 116 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Figure 36 Replacing the water pump
99. e 71 Replace expansion valve see page 131 page 133 or PCB AQP see page 94 Faulty high pressure sensor refriger Check high pressure sensor see Replace the high pressure sensor see ant brine PCB AQP page 69 page 135 or PCB AQP see page 94 2 3 U1 Reverse phase or open phase Trigger Effect Reset Refrigerant brine PCB detects incorrect Unit will stop operating Via user interface power reset power supply Possible cause Check Corrective action Power supply is not OK gt open phase Check power supply a Power supply is not OK gt reverse phase Check power supply Change two phases with each other Faulty refrigerant brine PCB A9P Check if the correct spare part PCB A9P Replace PCB A9P when required see was installed page 94 2 38 U2 Power supply voltage abnormality Trigger Effect Reset Inverter PCB detects an abnormal power Unit will stop operating Via user interface supply drop or peak Possible cause Check Corrective action Power supply is not OK gt imbalance Check power supply for voltage fluctua Voltage fluctuations should be less than gt 10 rated power supply 400 V tions gt 10 10 Power supply is not OK gt reverse phase Check power supply Change two phases with each other Faulty inverter PCB A10P Check inverter PCB A10P see page 74 Replace inverter PCB A10P see page 95 Page 32 DAIKIN 13 01 14 Version 1 0 Ground so
100. e fluctua Voltage fluctuations should be less than gt 10 rated power supply 400 V tions gt 10 10 Faulty inverter PCB A10P Check inverter PCB see page 74 inverter PCB Check inverter PCB see page 74 page 74 Replace inverter PCB see page 95 Page 30 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 2 Error code based troubleshooting 2 33 P4 Inverter radiation fin thermistor R10T error Trigger Effect Reset Thermistor R10T detects an abnormal Unit will stop operating Auto reset when problem is solved value open or short circuit Possible cause Check Corrective action Faulty inverter heat sink thermistor R10T Check thermistor R10T see page 57 Replace thermistor R10T see page 143 inverter PCB A10P Check inverter PCB see page 74 or PCB A10P see page 95 2 34 PJ Defective capacity setting Trigger Effect Reset Refrigerant brine PCB detects a defective Unit will stop operating Via user interface capacity in EEPROM Possible cause Check Corrective action Positions of PCB dipswitches are not OK Check if dipswitches are set to default OFF position Faulty refrigerant brine PCB A9P Check if the alive led is blinking in regular If not blinking in regular intervals replace intervals the PCB AQP 2 35 UA PCB combination error Trigger Effect Reset System detects combination mismatch Unit will
101. e side Check brine freeze up temperature Tf setting A 04 PHE condensor water side Dirty water particles Check waterflow rate If required replace the partial blockage registered by flowsensor water plate type heat Check water side plate exchanger type heat exchanger see Check the water quality page 66 for blockage 3 way valve bypass between 3 way valve incorrectly Check the 3 way valve see Correct the position of the domestic hot water and space mounted page 78 3 way valve see page 123 heating and see page 126 Water filter F12 blocked Dirty water Check water filter e Clean the water filter see Check water quality page 98 e Check the water quality Air in the water circuit Not enough air purged Check if all air purge valves Purge air out of unit and field are open supplied water system and Check if air purge valves backup heater are installed on all highest points of the field installed water circuit Water circuit partially Dirty water Check water circuit unit Remove possible blockages blocked field for blockages and check the water quality Root cause category component mechanical Refrigerant shortage e Refrigerant leakage e Incorrectly charged e Check refrigerant charge If required repair the leak and e Pressure testthe system to charge the correct refrigerant check for leakage amount 1 8 kg Air Purge AP blocked air Component failure Check air purge v
102. e the bracket 2 3 Open the sound insulation 3 at the rear of the heat pump module by pulling the velcro strips 4 4 From the rear side pull the velcro strip 5 of the compressor top insulation Page 136 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Figure 58 Replacing the refrigerant high pressure sensor 2 1 Screw 4 Velcro strip 2 Bracket 5 Velcro strip compressor 3 Sound insulation 5 From the front side release the 3 velcro strips 1 on the compressor insulation 2 and open the compressor insulation 2 Figure 59 Replacing the refrigerant high pressure sensor 3 1 Velcro strip 3 Compressor 2 Compressor insulation 6 From the rear side remove the compressor insulation 7 Use a welding blanket 1 to protect the components that surround the refrigerant high pressure sensor 2 8 Place 2 wet cooling clamps 3 on the refrigerant high pressure sensor 2 body 9 Braze the refrigerant high pressure sensor piping 13 01 14 Version 1 0 7 DAIKIN Page 137 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures 10 Remove the refrigerant high pressure sensor 2 Figure 60 Replacing the refrigerant high pressure sensor 3 1 Welding blanket not illustrated 3 Cooling clamp not illustrated 2 Refrigerant high pressure sensor Installation CAUTION Use we
103. eater is composed of heater E1H 3 x 1 kW and E2H The backup heater is used to assist the heat 3 x 2 kW pump system to heat the water for space heating and domestic hot water operation Location Piping diagram Switch box PRESSURE SAFETY GAUGE PG2 VALVE BACK UP q HEATER j PANSION JESSEL Check procedure Mechanical check Not applicable 13 01 14 Version 1 0 WDAIKIN Page 53 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 4 Component checklist Preliminary check _ Switch off the Daikin Altherma GSHP via the user interface 2 Remove the front panel refer to Removing the front panel on page 83 3 Remove the switch box cover refer to Removing the switch box cover on page 87 4 Check circuit breaker F1B reset circuit breaker F1B if it has tripped 5 Check thermal protector backup heater Q1L reset thermal protector backup heater Q1L if it has tripped INFORMATION If F1B or Q1L trip again it is required to determine the root cause of the problem because something is overloading the electrical circuit or creating a short circuit INFORMATION If 1 or more checks fail replace the backup heater Resistance isolation check 1 Unplug the connector X1H 2 Measure the 3x1 kW heater resistance between X1H 1 2 X1H 1 3 and X1H 2 3 3 All values must be 108 Ohm 10 if not replace the backup heater refer to Replacing the backup heater on page 104 4 Measure t
104. eccceeecceeeeeeeeeeeeeeeeeeeeeeeesaeeeeeeeeseeeseaeeseeeeseeeeseaeesseeesseeeseneeseneesneees 47 3 12 Tapping water related 25 case cceakededesS ceseinteceanters ste Penelecenc ble deiiciebceesecees boca dendaseacee a cecbacheantuckcaddeanentuelendaetonsece selec 48 3 12 1 High water pressure at tapping point 2 0 ccc ccceece cece ceeeeeeeeeeseeeeseeeseeeeeseeeeseeeeseeeeaeseseaeeesaaeeeseeeeaeees 48 3 12 2 Tapping water has white colour c cc ecccccccccs sees eeeceeeeceeeeeeeeeeseeeeseeeeseeeeseeeeeaeesaeeesseeesaeeeeeseeesaneesseeesaaeees 48 3 12 3 Bad Odour from tapping water cccccccsseccceeeccenceceuseceueeceuceceeeesueessaeeesaueeseesseeeesueessuseessueesaeessueesaaeess 48 3 13 Compressor related cecccccecccceseccceeeeeeeeeeeeeeeeeeeee cesses cesses eeeseeeeesaeeeeseeeeeseeeeeseeeeeseeecessaeecesseecesseeeesseeeeseeeeas 49 3 13 1 Compressor does not Start 20 ccc ececceeeeceeececeeeeeeeeeeeeeeseeeeeeeeeseecesseeseeeeesaeesseeeesaeeeseseesseeesageesseeessaeees 49 3 13 2 Compressor does not increase frequency ccceccceecccceececeeeeceeeeeeeceeseeeeseeeeseseeseecesaeeesaeeessaeessageesseeeeaaeees 49 eed MIAO STS da pees eee ca teecep EEE EE EE E A R E EA 51 214s 1s Brine pump DEN AVIOR sccsossacccncinu vosensnctesaenieisaged AERES Era o EEE EE EE EA S EAE EOAR En rai 51 3 14 2 Water pump behavior c ccc cece ceeccceeecce cece eee ee eee ceeeesaeeeseeeeseeeeseaeeseeeeeseeseaeeeseeeeseeeeseeeee
105. eeeeeeeeeeeeeseeeeeeeeesseeeeseeeseeeeeseeeeseeeesueeeseaeeeseeeesaeeees 122 2 2 16 Replacing the 3 way valve Motor ccccseccccseceeceeeeeeceeeeeeesueeeeseueeeseaeeeesuaeeeseueeeeasaeeessueeeeeesueeeeeaueeeesaeees 123 2 2 17 Replacing the 3 Way valve body nceeccoscccsse2 ccssereessesecossnadaanesmoueasivatdasbacladsdeaswexbeclenucdpustaduuunedeh ednesseiseaneeciew s 126 2 2 18 Replacing the water manometer cccceccccceeececesscecseseceeuseccsesecesusececeuseeseuseeceeueeesseueeesseuseeesuseeesagees 127 2 2 19 Replacing the brine manometer cccceecccesseccceeeeecensceccesececeuscecsseeeceeeesseusecessesecseuseeeseesueeessuseessaees 129 2 2 20 Replacing the electronic expansion valve K1E body cccccccseeeeeeeeeeeeeeeeeeceeeeeeaeeeeeseaeeeesseeeesaaeesesaaaees 131 2 2 21 Replacing the electronic expansion valve K1E electromagnet cccceeccccceeeeeeeeeeeeceeeeeeseeeeeeaueeeseaneees 133 2 2 22 Replacing the refrigerant high pressure Sensor ccceecceceeeeeeceeeeeeeeeeeeeeeeeesaeeeeesaueeeceaeeeesseeeeeseeeessaees 135 2 2 23 Replacing the refrigerant high pressure switch cccccecccceeeeeeceeeeeeeeeeeeceeeeeeseeeeesaueeeeseeeeeesaeerecaueeeesaees 138 2 2 24 Replacing a thermistor except RIOT ceecccecccecseeeeeseeeeecaeeeeeseeeeesaueeesseceeesseeeeesaseeesaeeeeessceeessaeeeeesaees 141 2 2 25 Replacing temperature sensor RIOT ou cece eecccceeeeceeeeceeeeseeee
106. eeeeeseeeeeseeeeseeeeseeeseeeeseeeeseaeesseeeeseeeeegeeees 143 Par 4 MalNtON ANC eG assaseesacucanmnnsianaiacesescanawasiann E E ES 147 1 Yearly maintenance intervals and procedures ccccccceccceecceeceeeeseeecaeeseceseeeeeeeseeeseeeseeeeaeeeseeeseeesaeeeges 147 2 Maintenance procedures as voc sect stcesexbeecduscnensjesienedenee dienes teitcabeiandn dace dinbseaicieinmnedeneisia yennceleddauee Goendes sadecxbaenemeteb des 147 2 1 Checking fluid pressure of Space Heating and brine circuit ccc cecceececceeeeeeeeeseeeeeeseaeeeeeeeeaeeeesaeeeeeeeeseaaees 147 2 2 Checking for brine leakage ceeecccccseeeeceeeceeeeeeeeseeeeeeeaeeeeeeeeeeeeeeeseeeeeeeeeeeeeeseeeeeeeesaeeeeessaeaeeeeesaaeeeesseeeeeseaeees 148 2 3 Checking the pressure relief valve hose ccccceecccccsssececceeeececeeeceeeceuecececeueeeecseseeecsusecessensseeesessasseesssagess 148 13 01 14 Version 1 0 DAIKIN Page 5 Ground source heat pump ESIE13 03 2 4 Checking the pressure relief valves of Space Heating and brine circuit ccc ceecceeceeeeeeeeeaeeeeeeseeeeeeeeeeens 148 2 5 Checking the relief valve of the Domestic Hot Water tank field supply cece ce eecceeeeeeeeeeeeeeeeeeeeseaeeees 149 2 6 Checking the filters of Space Heating and brine circuit 2 0 0 eee ccce eee eeeeeeeeeeeeeeseaeeeeesaseeeeeesaeeeeeeeeseeeeeeeaas 149 2 Draining the Domestic Hot Water tank 00 0 ccccccccsecceeeeeeeeeeeeeeseeee
107. eessusecsueecsueeseuesauaesauaeseaeessueeesaeeseas 32 2 38 U2 Power supply voltage abnormality ee ccceecccceeeeeceeeeeeeeeeeeeaeeeeseeeesaeeeeeeaeeeseeeeeeaaeeesaageeessaeeeseaeeessaes 32 2 39 U3 00 Abnormal stop of underfloor heating dry out scheduled operation cccccseeeeeeeeeeeeeeeseeeeeeeees 33 2 40 U4 Defective indoor OUtdOOr transmission cccccseececceececeeeeeeceeceeceeececsueceeseeeseuceeseecesseeesseeeesseeeessaes 33 2 41 U5 00 Transmission error between user interface and hydro PCB ceecccecceeceeeceeeeeeeeeaeeeeeeeeneeeeeeeaeens 33 2 42 7H 01 Water flow abnormality cccccecceccceeeeeeeeceeeeeeeeaeeeeeeseeeeeeeeseeeeeeseeeeeeesseeeeeesseeeeeeeessaueeeesseeeeesaaees 34 2 43 8F Backup heater outlet water temperature error during domestic hot water operation 0c000 34 2 44 8H Backup heater outlet water temperature error ec cece cc cecccceececeeeceeeeeeeeeceeeeeaeeeeseeeesaeesaeeeeeeaeeeseeeeaes 35 2 45 80 R4T entering water thermistor abnormality c cee ccsseeceseeeeeeeeeeeeeeeeseeeeeseeeeeseeeeseeeeesseeeeseeeeeseeeeeeas 35 2 46 81 Leaving water thermistor R1T abnormality cece eceeececeeeeeeeeeeeeeeeeeeeeeeeeseeeeeseeeeeeseeeeseeeeesegeeesneeesas 35 3 Symptom based IROUDICSMOOWUNG scscesesecetcesacetesaetecucdnedacesadcccsacedeuusnanedcavsesnsecannsseadeesacna
108. efault value This setting is not applicable for this unit Do not change the default value 13 01 14 Version 1 0 DAIKIN Page 155 ESIE13 03 Part 5 Appendix Field settings table Installer setting at variance with Breadcrumb Field code Setting name Range step Default value A8 9 08 R W 22 A 8 9 09 What is the desired delta T in heating R W 3 10 C step 1 C 8 C A 8 9 0A R W 5 A 8 9 0B What emitter type is connected to the main LWT zone R W 0 Quick 1 Slow A 8 9 0C Room temperature hysteresis R W 1 6 C step 0 5 C 1 C A 8 A 00 R W 1 A 8 A 01 R W 0 A 8 A 02 0 A 8 A 03 Maximum heating frequency R W 0 148Hz 1 193Hz A 8 A 04 Brine freezup temperature R W 0 0 C 1 2 C 2 4 C 3 6 C 4 8 C 5 10 C 6 12 C 7 14 C A 8 B 00 0 A 8 B 01 0 A 8 B 02 0 A 8 B 03 0 A 8 B 04 0 A 8 C 00 R O 1 A 8 C 01 R W 0 A 8 C 02 Is an external backup heat source connected R W 0 No 1 Bivalent A 8 C 03 Bivalent activation temperature R W 25 25 C step 1 C 0 C A 8 C 04 Bivalent hysteresis temperature R W 2 10 C step 1 C 3 C A 8 C 05 What is the thermo request contact type for the main zone R W 1 Thermo ON
109. efer gauge PG2 to the Installer Reference Guide Check for possible water leak Air in water circuit unit Check if all air purge valves are open Purge air out of unit and field supplied Check if air purge valves are installed on water system and BUH Refer to the all highest points of the field installed Installer Reference Guide water circuit Static pressure of water circuit is too high Check the system design and determine Correct hydraulic field circuit e g use of static pressure of the water circuit for balancing bottle Refer to the Installer each loop Reference Guide or to the Data Book for pump characteristics Water filter is blocked Check water filter Clean water filter see page 98 Check water quality and possible source of dirt Faulty 3 way valve Check 3 way valve see page 78 Replace 3 way valve see page 123 and see page 126 Faulty flow sensor hydro PCB A1P Check flow sensor see page 76 Replace flow sensor see page 102 or replace hydro PCB A1P see page 91 If flow sensor failed due to contamination check for source of contamination and consider to install an additional water fil ter Faulty water pump hydro PCB A1P Check water pump see page 65 Replace water pump see page 113 or replace hydro PCB A1P If flow sensor failed due to contamination check for source of contamination and consider to install an additional water fil ter TIP Check if problem also ha
110. elief valve hose is positioned appropriately to drain the water 2 4 Checking the pressure relief valves of Space Heating and brine circuit Actions Remarks Open the valve and check the correct operation A magnetic cyclone filter is to be preferred e If the fluid flow is high no blockage is suspected Refer to Safety valve SV1 SV2 pressure relief valve on e If the fluid flow is low or contains debris or dirt page 60 e Open the valve until fluid is without dirt e Flush the system and install an additional water filter Make sure to check the water brine pressure again after this Do not add to over 2 bar check as it might have dropped When below 1 bar add fluid WARNING Discharged fluid may be very hot Page 148 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 4 Maintenance 2 Maintenance procedures 2 5 Checking the relief valve of the Domestic Hot Water tank field supply Actions Remarks Open the valve and check the correct operation Make sure that all taps and air vent are open otherwise the tank e If the fluid flow is high no blockage is suspected might be sucked vacuum and the water will not move e Ifthe fluid flow is low or contains debris or dirt e Open the valve until fluid is without dirt e Flush and clean the tank and piping between relief valve and cold water inlet WARNING Discharged fluid may be very hot 2 6 Checking the filters of Space Heating and b
111. emove it from the filter housing 6 Clean the brine filter 5 with water and a soft brush Figure 18 Cleaning the brine filter 1 Velcro strip 4 Clip 2 Brine filter insulation 5 Brine filter 3 Recipient Installation CAUTION Handle the brine filter with care Do NOT use excessive force when reinserting the brine filter so as NOT to damage the mesh 13 01 14 Version 1 0 7 DAIKIN Page 97 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Figure 19 Brine filter installation 1 Proceed in reverse order 2 Fill the brine circuit refer to To fill the brine circuit in the Daikin Altherma ground source heat pump Installer reference guide 3 Check the brine concentration 2 2 4 Cleaning the water filter 2 2 4 1 Preliminary actions 1 Switch off the Daikin Altherma GSHP via the user interface 2 Remove the front panel refer to Removing the front panel on page 83 3 Remove the top panel refer to Removing the top panel on page 86 4 Partially drain the water circuit refer to Draining the water circuit on page 85 2 2 4 2 Procedure Removal CAUTION A Although the water circuit is partially drained some water may be spilled when removing the water filter Always wipe off spilled water 1 Place a cloth 1 under the water filter 3 2 Remove the clip 2 that fixes the water filter 3
112. emperature at the 3 way valve Domestic Hot Water exit and at the Space Heating exit the Domestic Hot Water exit must have the same temperature as the 3 way valve input the Space Heating exit must have a much lower temperature If one or both checks above are not OK the 3 way valve body must be replaced refer to Replacing the 3 way valve body on page 126 If both checks above are OK the 3 way valve motor must be replaced refer to Replacing the 3 way valve motor on page 123 13 01 14 Version 1 0 9 DAIKIN Page 79 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 4 Component checklist lt a lt SPACE HEATING DOMESTIC HOT WATER Page 80 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 1 General Repair procedures Part 3 Repair Refrigerant handling procedures Air purge of the space heating circuit Pipe work procedures Draining the domestic hot water tank Removing the front panel Removing the top panel Refrigerant Handling Removing the switch box cover Draining the brine circuit Opening the sound insulation of the heat pump module front side Air purge of the brine circuit Draining the water circuit Unlocking the pivoting power input section 1 General Repair procedures 1 1 Refrigerant handling procedures e Make sure the applied pressure is never higher than the unit design pressure as indicated on the nameplate e Work according the F gas regulation and or lo
113. epair procedures ESIE13 03 Part 3 Repair Figure 54 Replacing the electronic expansion valve K1E body 2 1 mey 1 Pa A A f 7 SOY AWE ET AMAL AI SEURE TINNY ACA N SMU MU oF 1 Welding blanket 3 Expansion valve body 2 Cooling clamp Installation CAUTION Use welding blankets to protect the components that surround the expansion valve body Use 2 cooling clamps to protect the expansion valve during brazing 1 Proceed in reverse order 2 2 21 Replacing the electronic expansion valve K1E electromagnet 2 2 21 1 Preliminary actions 1 Remove the front panel refer to Removing the front panel on page 83 2 Remove the switch box cover refer to Removing the switch box cover on page 87 Open the Sound Insulation of the heat pump module front side only Opening the sound insulation of the heat pump module front side only on page 87 13 01 14 Version 1 0 7 DAIKIN Page 133 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures 2 2 21 2 Procedure Removal INFORMATION The electronic expansion valve electromagnet is replaced together with the electronic expansion valve electromagnet wire To facilitate the installation of the new electronic expansion valve electromagnet a pull line must be attached to the electronic expansion valve electromagnet wire before removal 1 Unplug connector X21A 1 from the A9P PCB 2
114. ering 6 2 Energy metering Error handling a User permission level onsumea elec Produced energy Actuators Operation modes RUNNING none 6 3 Error information Version Error history Contact helpdesk number 1 4 Content of retry Through the outdoor PCB the content of retry can be determined Here you can find the errors which are being created before they are being displayed on the user interface Content of retry goes back up to 3 retries Take the following steps to check contents of retry and error Page 18 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting To enter Monitor mode press the MODE BS1 lt Display of RETURN 2 gt button when in Setting mode 1 a a ian i a n a a 13 01 14 Version 1 0 Press the SET BS2 button to set the LED display to retry or error item lt Display of RETURN 1 gt When the RETURN BS3 button is pressed the LED display for RETURN 1 turns ON lt Selection of retry or error item gt lt Display of RETURN 3 gt Data display 1 Display contents PPJ er Far HBP HOP ATP In normal operation Ol l loleleole finoilretun operation _ s Ss f fe le lelelo Data display 2 sini FP ese foe elelalolo Data display 3 Display contents Normal not in stepping down operation o Low pressure stepping down 8 e ale High pressure stepping down
115. ervice cover is opened WARNING Only use copper wires All field wiring must be performed in accordance with the wiring diagram and installation manual supplied with the product lf the power cable and lead wires have scratches or deteriorated be sure to replace them Damaged cable and wires may cause an electrical shock excessive heat generation or fire Secure all terminal connections and provide proper routing for cables both inside and outside the switchbox 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 Make sure to check the earth wiring Do NOT earth the unit to a utility pipe surge absorber or telephone earth Improper earth wiring may cause electrical shock Make sure to use a dedicated power circuit NEVER use a power supply shared by another appliance Make sure to check the required fuses and or circuit breakers before starting works WARNING e After finishing the electrical work confirm that each electrical component and terminal inside the electrical components box is connected securely e Make sure all covers are closed before starting the unit again 2 3 Cautions CAUTION 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 malfunctions smoke or fire CAUTION Make sure water
116. erview of parts replacement procedures Removing the lower rear panel Replacing the water expansion vessel Replacing a PCB in the switch box Replacing the brine expansion vessel Cleaning the brine filter Replacing the 3 way valve motor Cleaning the water filter Replacing the 3 way valve body Replacing the brine flow switch Replacing the water manometer Replacing the water flow sensor Replacing the brine manometer Replacing the brine pump Replacing the electronic expansion valve K1E body Replacing the backup heater Replacing the electronic expansion valve K1E electromagnet Replacing the thermal protector backup heater Replacing the refrigerant high pressure sensor Replacing the water pressure relief valve Replacing the refrigerant high pressure switch Replacing the brine pressure relief valve Replacing a thermistor except R10T Replacing the water pump Replacing temperature sensor R10T Replacing the compressor 2 2 1 Removing the lower rear panel 2 2 1 1 Preliminary actions 1 Switch off the Daikin Altherma GSHP via the user interface 2 Shut off and disconnect the brine piping 3 Shut off and disconnect the space heating piping 4 Shut off and disconnect the domestic hot water piping 5 Remove the front panel refer to Removing the front panel on page 83 6 Drain the domestic hot water tank refer to Draining the domestic hot water tank on page 86 7 Drain the brine circuit refer to Draining the brine circuit on page 84
117. es Figure 7 Draining the water circuit 1 Water circuit drain 2 Water circuit drain valve DR4 2 1 6 Air purge of the space heating circuit To perform an air purge refer to 9 3 Air purge function on the space heating circuit in the Daikin Altherma ground source heat pump Installer reference guide 2 1 7 Draining the domestic hot water tank 2 1 7 1 Procedure To drain the domestic hot water tank refer to To drain the domestic hot water tank in the Daikin Altherma ground source heat pump Installer reference guide 2 1 8 Removing the top panel 1 Switch off the Daikin Altherma GSHP via the user interface 2 Loosen and remove the 4 screws 1 that fix the top panel 3 Remove the top panel 2 from the Daikin Altherma GSHP Figure 8 Removing the top panel 1 Screw 2 Top panel Page 86 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures 2 1 9 Removing the switch box cover WARNING Electrical shock hazard Remove power from the Daikin Altherma GSHP before removing the switch box cover Do not touch terminals 1 Switch off the Daikin Altherma GSHP via the user interface 2 Loosen and remove the 7 screws 1 that fix the switch box cover 2 3 Remove the switch box cover 2 from the Daikin Altherma GSHP Figure 9 Removing the switch box cover 2 1 10 Opening the sound insulation of the heat pump module front side onl
118. eseasaeeeeesaaeeeeesaaees 29 2 28 L4 Radiation fin temperature abnormality ccccccccccseeeeeeeceeeeeeeseeeeeeecaeeeeeeeseeeeeeeeseeeeesseaaeeeesseeeeeesaaaes 29 2 29 L5 Output Overcurrent detection 2 0 ccecccecccccesececeeeeecceneeceeueeceeuceeseaeeecsueeessaeeeseaeeessaeeeseeaeessageessaeeessaes 29 2 30 L8 Electronic thermal overload ccccccccccsececeeeeceeeeceueeceueeceueecsueecsueessueecsueessueesseessuesessaueeeeessueessaeessas 30 2 31 L9 Stall Prevention time lag ceccccccseeeececeeeeeeeeeeeeeeeaeeeeeeeseseeeeeeaeeeeeesseeeeeeeseeeeeeseeeseeeeeeesaeeeeeesaeeeeesaaaes 30 2 32 P1 Open phase or power supply voltage imbalance 00 cece cc ceeccceeeeceeaeececaeeeeeaaeeceeaeeeeeaueeeeaeeeesaeeeessees 30 2 33 P Inverter radiation fin thermistor R107 error cccccceccceeeeeeeeeeeeeeeeeeeaeeeeeeseeeeeeseeeeeeessaaeeeeeeeaeeeeeesaaees 31 2 34 PJ Defective Capacity setting cccccseecccccssseceecceseececeeesececceuseecesseseecessusecesseeseeeesseaseeeessaaeeeesssseesssnaes 31 239 UA CB combmation SOT tagcceacedeastge cae teste cacant ATEA AEAEE AATA EErEE EE AERE EAE EREA ARARE 31 2 36 UO Refrigerant shortage 2 0 ce eccccecccceceeeeeeeeeeeeeeeseeeeeeeaaeeeeeeseeeeeeeseeeeeeseaeeeeeeeseaeeeesseasseeeeessaeeeeeaeeseeesaaees 32 2 37 U1 Reverse phase or open phase ccceccccesccceececeeeceueeeceeceeecsusess
119. eseeeeseeeeeeeeeeeeeeaeeeseaeeeseaeeeeaaeeeesaneeesaneeesaaeees 150 ONO OS anh AE EEE E AE A E E EE TEA A E E A E E EE E E EE EE E NS 150 2 9 Descaling and chemical disinfection 2 0 ceceecceeceeeeeeeeeeeeeeeeaeeeeeesseeeeeeseeseeeeeeeeeeeesaaeeeeesaeeeeeesaeeeeesaeeeeesaas 150 2 10 Checking the SWIC OOK sssini i EE a E re a EE 151 AG ie AOI a E A gan snetaseaeanseaneanaeaiwvane 153 Mell MS EE UNO Ss EAE E ccesta ane decease sno E EE A E E E NE P aeutesducdsasaecer ET 153 2 V a AS ea E wesc E E EE E E A EE 157 APON aeiee a EEE AE EENE EEA EEE A E EAE 161 de PIDINGOVOTVIOW posiirereer sees EEEE ENE EEN ENE V EEEE EEEE EE EEEE EEES EENE 162 ENOS O ae E E E E sete aeesoesstnueeccees 163 Page 6 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 List of figures Required tools TOF component check sesicndsacasins soewaadunidumdioanndicennancnstenaweicebine decieewsiecied exes ealend an neawateewed vanced lt avsddesieanetecseas neteens 53 PRE CUNT CO EOC CUS aE ae nee abies seek eases ees soe ye ctae asa eats maces sein eaiee TE E AOA 82 PE CIT CO TOONS aeaniino E E E EE EEE T E AR EEA A EE EES E AAEE 82 Removing Me Tont panal ssrin i EE A EE E A EA A E EEAS 83 Remgerant Service POIS sessrrsiuineniankinne ninan AAEE EEEE EAE AAAA EEEa E TEAR EE ARAR ARETE AEON EAR 84 PMI VS DINE COUT sear EE E E E AAE EEEN 85 Draining the water CIFCUN scnessoncncensaceruagstennetendseadedetoeemesseredaliesdecididsicnenadued EEE aiae ai ea EAE E
120. eseeeesseeeeeaaes 158 Wino dag aimo GB ATE arar ceteris erence cence E T a sates utuseuaeae nea E S 159 Wiring diagram 4 PCB AQP F ATOPY srcsrecincentewaiueddaausibusiten ng sieseiseausddiedamociesietedechansivennendeadmentdaenduntdedeaiodmbieendueasSinendaertes 160 F HOI AGU ANNA oa E aca cemtteaunsanne rash T iauacecuebadene E E E E E E E 161 PDINO OVOTVICW giremedi ae ee EEEN E E E E r T A T ei enen 162 EATI SONS aai A E E E 163 Page 8 WDAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 1 Introduction 1 Version log Part 1 Introduction 1 Version log Version history Version code Description Date Draft 0 1 Preliminary release 20 12 2013 Addition of hyperlinks from troubleshooting tables towards check and replacement pro 13 01 2014 cedures 2 Safety precautions The precautions described in this document cover very important topics follow them carefully All activities described in the service manual must be performed by an authorized person If you are not sure how to install operate or service the unit contact your dealer 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 e Instructions for shutting down the system in case of an emergency e
121. ety error Trigger Effect Thermal protector Q1L is activated temp Unit will stop operating Power reset reset via user interface gt 92 C pressing the button on the Q1L if activated Possible cause Corrective action Air in water circuit backup heater Check if all air purge valves are open Purge air out of unit and field supplied Check if air purge valves are installed on water system and BUH Refer to the all highest points of the field installed Installer Reference Guide water circuit Increased water temperature by external Check if another heat source is installed Correct hydraulic field circuit Refer to the heat source on the same water circuit Installer Reference Guide Faulty thermal protector Q1L hydro PCB Check thermal protector backup heater Replace thermal protector backup heater A1P Q1L see page 72 aa see page 107 or hydro PCB A1P see page 91 Faulty thermistor R2T after backup Check thermistor R2T see page 57 Replace thermistor R2T see page 141 heater hydro PCB A1P hydro PCB A1P see page 91 Faulty thermistor R1T leaving water Check thermistor R1T See page 57 Replace thermistor R1T see page 141 hydro PCB A1P hydro PCB A1P see page 91 Faulty backup heater assy hydro PCB Check backup heater See page 53 Replace the faulty components backup A1P heater see page 104 or hydro PCB A1P see page 91 Page 20 DAIKIN 13 01 14 Version 1 0 Ground source heat pump E
122. ew 2 3 way valve motor 12 Remove the 3 way valve motor 1 from the 3 way valve body 2 13 Remove the 3 way valve body 2 Figure 47 Replacing the 3 way valve motor 3 2 3 way valve body CAUTION When mounting the 3 way valve motor on the 3 way valve body the 3 way valve axle must be aligned with the 3 way valve motor The 3 way valve motor is shipped with the control knob in the centre position 1 Check the position of the notch 3 in the 3 way valve axle 2 2 If required manually adjust the 3 way valve axle 2 to align the notch with the 3 way valve motor 13 01 14 Version 1 0 9 DAIKIN Page 125 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures 3 Proceed in reverse order 4 Fill the domestic hot water circuit Figure 48 Replacing the 3 way valve motor 4 SPACE HEATING DOMESTIC HOT WATER 1 3 way valve knob 3 Notch 2 3 way valve axle 2 2 17 Replacing the 3 way valve body 2 2 17 1 Preliminary actions 1 Switch off the Daikin Altherma GSHP via the user interface 2 Remove the front panel refer to Removing the front panel on page 83 3 Remove the top panel refer to Removing the top panel on page 86 4 Drain the water circuit refer to Draining the water circuit on page 85 5 Separate the 3 way valve motor from the 3 way valve refer to Replacing the 3 way valve motor on page 123 2 2 17 2 Procedure Removal 1 Remove the
123. expansion vessel on page 121 or Replacing the brine expansion vessel on page 122 4 6 Brine flow switch S1L Technical specification Description The brine flow switch has a normally open contact The brine flow switch contact The brine flow switch is a mechanical switch that closes when the brine flow equals or exceeds 25 I m is switched on or off in response to the flow or non flow of the brine in the brine circuit The brine flow switch operates through the use of a paddle which gets displaced due to the force of brine moving past it Location Piping diagram Switch box PRESSURE SAFETY SV1 VALVE KiM K2M n jas ive mn z EXPANSION VESSEL Check procedure Mechanical check 1 Switch off the Daikin Altherma GSHP via the user interface 2 Drain the brine circuit refer to Draining the brine circuit on page 84 3 Loosen the brine flow switch nut 4 Remove the brine flow switch and check that the paddle can move without applying force 5 Ifthe paddle is obstructed the brine flow switch must be replaced Page 62 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 4 Component checklist Electrical check 1 2 10 11 Switch off the Daikin Altherma GSHP via the user interface Remove the front panel refer to the Daikin Altherma ground source heat pump Installer reference guide EGSQH10S18AA9W Remove the switch box cover refer to the
124. g WD curve R W 20 5 C step 1 C Ks E T J ott ZW LA W Ses 05 RW 20 C at is the requested limit for 7 step 0 A 8 0 04 R W 8 20 kW A 8 0 05 R W 12 A 8 5 0A What is the requested limit for DI2 R W 0 20 kW step 0 5 kW A 8 0 06 R W 35 20 kw A 8 0 07 R W 20 A 8 5 0B What is the requested limit for D13 R W 0 20 kW step 0 5 kW A 8 0 0B Leaving water value for high ambient temp for DHW WD curve R W 35 6 0E C step 1 C 20 kW 45 C A 8 5 0C What is the requested limit for D14 R W 0 20 kW step 0 5 kW A 8 0 0C Leaving water value for low ambient temp for DHW WD curve R W 45 6 0E C step 1 C 20 kW 60 C A 8 5 0D What type of backup heater installation is used R O 4 3PN 1 2 A 8 0 0D High ambient temp for DHW WD curve R W 10 20 C step 1 C A 8 5 0E R W 1 15 C A 8 6 00 The temperature difference determining the heat pump ON temperature R W 2 20 C step 1 C A 8 0 0E Low ambient temp for DHW WD curve R W 20 5 C step 1 C 2 C 20 C A 8 6 01 The temperature difference determining the heat pump OFF temperature R W 0 10 C step 1 C A 8 1 00 Low ambient temp for LWT main zone heating WD curve R W 20 5 C step 1 C 2 C 20 C A 8 6 02 R W 0 A 8 1 01 High ambient temp for LWT main zone heating WD curve R W 10 20 C step 1 C A 8 6 03 What is the capacity of the backup heater step 1 R W 0 10kW step 0 2kW 15 C 3kW A 8 1 02 Leaving water value for l
125. ge 123 and see page 126 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 3 Symptom based troubleshooting Possible failures Root cause Corrective action Root cause category component electrical 3 way valve blocked Component failure Check the 3 way valve see Replace the 3 way valve see page 78 page 123 and see page 126 Deviation of tank thermistor Tank thermistor measures a Check tank thermistor R5T Replace thermistor ROT RST higher temperature than actual see page 57 see Replacing a thermistor component failure except R10T on page 141 3 4 The system does not start operate Possible failures Root cause Corrective action Root cause category software control Thermostat ON conditions Thermostat ON conditions Confirm thermostat on conditions depend Change setpoint if for space heating are not for space heating are not ing on the unit control method setting required met met C 07 e Setting 1 External room thermostat indicates by contact when to start stop Setting 2 Room thermostat control gt compare setpoint with room thermistor value Thermo on room temperature setpoint hysteresis 2 Thermo off room temperature hysteresis 2 For setting of hysteresis refer to setting 9 0C Setting 3 Leaving water temperature control gt Thermo on leaving water temperature setpoint Thermo off leaving water temperature 1 5
126. gh pressure switch 2 ou cee ceccccececeeeceeeceeeeseeeae cece eeeaeeeeeeeseeesaeeseeeeseeeseeesseeeseeseeeeaaes 139 Replacing the refrigerant high pressure switch 3 ccceccccecccscecececeneecueceuceceucceueceuecsaeecauecueessueesseessuessueeseeesaaes 140 Replacing the refrigerant Nigh pressure sensor 3 ou eeecceeceseecceeeceeeeceeece cece eeeeeeeseeeseeeseeeseeeeseeeseeeseeeseeeseeesaneeaaes 140 TSTMS OR IOC AN OM asco atet cnet tra menechen E S iutccand sean susdeaussiehine stealer anse E E ates 141 Replacing a temperature sensor 1 ccc cecccecccssccescecececececeeceeecaeecaeeeeaeeseesseesaueesaessaeesaeessaesaeeesueesaeeeeaeseueeseeesaass 142 Replacing a temperature sensor 2 ccc cecccecccsecceececececeeeceueceaeecaeesaeeceaeeeaeesauesaueeseeesueesueesesaeeesaeesueessuessaeesaeesaass 143 Replacing temperature sensor RIOT ec ceccceccscccsscceececeeeceueceueeceeceueceaeesaeesaeeeseesaeeseeeseessaeeseeessueesaeeseuessaeeseeesaass 144 Replacing temperature sensor RIOT ec ccccceccscccsseceececseeceueceseecaeeceueceaeesaeeseeesaessaeesaeeseeeesaeeseesaeeesaeessueseueesaeesnass 145 FM SUNS ADIO ste arise age E ets aru E tunel eed EEE heres ee EEE E E E 154 Wiring diagrami 1 switehbox layout scoc2scencseces seasevesesscans edocs acswweteet eda ssecs dened esas ee eens Aa A A e NO a a 157 Wiring diagram 2 PCB A1P A2P A4P A amp P 00 cccceccccceccceeceeeeeeeeeeeeeeeeeeeeeeesaeeeeeseeeeesseeeessaeeeeseeeeee
127. he 3x2 kW heater resistance between X1H 7 8 X1H 8 9 and X1H 7 9 5 All values must be 54 Ohm 10 if not replace the backup heater refer to Replacing the backup heater on page 104 6 Perform a Megger test 500 V on the X1H 5 GND and X1H 1 7 The isolation resistance must exceed 3 MOhm 8 Perform amegger test 500 V on the X1H 5 GND and X1H 7 9 The isolation resistance must exceed 3 MOhm if not replace the backup heater refer to Replacing the backup heater on page 104 Page 54 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 4 Component checklist Overall power circuit check 1 2 Unplug the connector X1H Power the Daikin Altherma GSHP Activate Installer level on the user interface refer to Installer Level Settings on the user interface are available in the Installer Reference Guide paragraph To access the most used commands Select Actuator test run A 7 4 Activate BUH step 1 Activate BUH step 2 Check the status of Back Up Heater step 1 2 in Menu 6 5 actuators status must be 6 5 3 BUH step 1 ON 6 5 4 BUH step 2 ON Measure the voltage between connector X1H 1 2 X1H 1 3 and X1H 2 3 All voltages must be 400 VAC 10 Measure the voltage between connector X1H 7 8 X1H 8 9 and X1H 7 9 All voltages must be 400 VAC 10 Circuit breakers thermal protector backup heater check 1 If not all voltages are present on
128. inking in regular Replace PCB A1P see PCB malfunction intervals page 91 in case power Confirm power supply supply and transformer towards PCB A1P TR1 are OK but led is not Check good operation of blinking transformer TR Reactor coil L1R L2R L3R Component problem Check continuity of the reactor Replace the reactor coil in broken coil case faulty P1P2 transmission cable bro Check P1P2 cable 16 VDC Repair P1 P2 cable if required ken short circuit on BRC terminals ie cable continuity Page 52 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 4 Component checklist 4 Component checklist Overview of component checklists Required tools for component check Compressor M1C Backup heater E1H E2H High pressure sensor B1PH Thermistors R1T R2T R3T R4T RST R6T R10T High pressure switch S1PH Safety valve SV1 SV2 pressure relief valve Electronic expansion valve K1E Expansion vessel EXP1 EXP2 Thermal protector backup heater Q1L Brine flow switch S1L Inverter PCB A10P Brine pump M3P Water flow sensor B1L Water pump M1P 3 way valve M3S Plate type heat exchanger PHE1 PHE2 4 1 Required tools for component check Figure 1 Required tools for component check 1 Magnet tool part N 9950038 3 Inverter analyzer tool part N 1368521 2 Extension cable tool part N 5011856 4 2 Backup heater E1H E2H Technical specification Description The 2 stage backup h
129. ion Refrigerant shortage incorrect charge Check for refrigerant shortage Repair the leak and charge the correct leakage Perform leak test amount of refrigerant 1 8 kg Faulty thermistor R2T refrigerant brine Check thermistor R2T see page 57 Replace thermistor R2T see page 141 or PCB AQP PCB AQP see page 94 Faulty compressor Check compressor see page 68 Replace compressor and also investigate reason of breakdown Check expansion valve operation liquid back issue Check refrigerant shortage overheated issue gt check for leak 2 14 HC Domestic hot water temperature error Trigger Effect Reset R5T A1P detects abnormal value open Unit will keep operating Auto reset when problem is solved or short circuit Possible cause Check Corrective action Faulty water tank thermistor R5T hydro Check thermistor R5T see page 57 Replace thermistor R5T see page 141 or PCB A1P hydro PCB A1P see page 91 2 15 H0 01 Brine flow switch error Trigger Effect Reset Brine flow switch detects flow after 45 Unit will stop operating Via user interface seconds pump has stopped Possible cause Corrective action Brine flow caused by external pump Check if another external pump is Correct brine field circuit to assure that the installed within the brine circuit field supplied brine pump does not influ ence the units internal brine flow or that it is stopped when the unit brine pu
130. is closed Fill brine if required If no brine exits while turning the brine pressure relief valve knob the brine pressure relief valve must be replaced refer to Replacing the water pressure relief valve on page 108 Turn the water pressure relief valve knob and listen if water exits for a short moment Check the water pressure it should be between 1 and 2 bar and stable when the pressure relief valve is closed Fill water if required If no water exits while turning the water pressure relief valve knob the water pressure relief valve must be replaced refer to Replacing the water pressure relief valve on page 108 Page 60 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 4 Component checklist 4 5 Expansion vessel EXP1 EXP2 Technical specification Description The expansion vessel EXP1 has a capacity of 10 liter and is pre pressurised at The expansion vessel is a small tank used to pro 1 bar tect the closed water and brine circuits from The expansion vessel EXP2 has a capacity of 10 liter and is pre pressurised at XCessive pressure The tank is partially filled with 1 bar air whose compressibility absorbs excess water brine pressure caused by thermal expan sion Location Piping diagram Check procedure Functional check 1 Power the Daikin Altherma GSHP 2 Enable space heating or domestic hot water 3 Check that the water temperature increases but
131. isos s Geos Erne Dj 29 ife walo o siflo we x Bie i l gt 1 X32A 4 Pull line not illustrated 2 A10 PCB 5 Tie wraps not illustrated 3 Refrigerant high pressure switch wire 1 Loosen and remove the 4 screws 1 that fix the bracket 2 on the rear side 2 Remove the bracket 2 3 Open the sound insulation 3 at the rear of the heat pump module by pulling the velcro strips 4 4 From the rear side pull the velcro strip 5 of the compressor top insulation Figure 62 Replacing the refrigerant high pressure switch 2 1 Screw 4 Velcro strip 2 Bracket 5 Velcro strip compressor 3 Sound insulation 5 From the front side release the 3 velcro strips 1 on the compressor insulation 2 and open the compressor insulation 2 13 01 14 Version 1 0 DAIKIN Page 139 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Figure 63 Replacing the refrigerant high pressure switch 3 1 Velcro strip 3 Compressor 2 Compressor insulation 6 From the rear side remove the compressor insulation 7 Use a welding blanket 1 to protect the components that surround the refrigerant high pressure sensor 2 8 Place 2 wet cooling clamps 3 on the refrigerant high pressure sensor 2 body 9 Braze the refrigerant high pressure sensor piping 10 Remove the refrigerant high pressure sensor 2 Figure 64 Replacing the refrige
132. klist 4 10 Compressor M1C Technical specification Description Compressor name 2YC63PXD C The compressor M1C compresses the refrigerant Type inverter driven double swing in the refrigerant circuit Location Piping diagram INSIDE OF UNIT FACTORY INSTALLED PRESSURE i it PRESSURE pam SAFETY GAUGE PG1 to ut SV2 Valve SAFETY svi VALVE B1PH S1PH igh high ssure pressure or switch E1H E2H BACK UP HEATER MUFFLER MU EXPANSION EXPANSION PHE1 PHE2 PLATE PLATE HEAT HEAT EXCHANGER EXCHANGER EXP1 Condenser EXP2 FILTER FI2 Manintad ia avamnla Check procedure Electrical check 1 2 Switch off the Daikin Altherma GSHP via the user interface Remove the switch box cover refer to Removing the switch box cover on page 87 Disconnect the connectors U V and W from PCB A10P Measure the compressor motor windings U V V W and U W all measurements must read 1 7 Ohm Megger the compressor using 500 or 1000 V DC the insulation must be higher than 3 MOhm Replace the compressor if the windings and or insulation measurements fail Run the compressor and measure the current in each phase the current for each phase should be identical and between 4 and 7 A When the current exceeds 10 A during normal operation it could indicate internal wear of the compressor In that case it can be decided to preventively replace the compressor refer to Replacing the compressor on page 117
133. lation Installation CAUTION The capillary of the water manometer must be wrapped with insulation behind the gauge 1 Stick the recuperated insulation at the rear of the water manometer 2 Proceed in reverse order 3 Fill the water circuit refer to To fill the space heating circuit in the Daikin Altherma ground source heat pump Installer reference guide 4 Purge the water circuit refer to 9 3 Air purge function on the space heating circuit in the Daikin Altherma ground source heat pump Installer reference guide 2 2 19 Replacing the brine manometer 2 2 19 1 Preliminary actions 1 Remove the front panel refer to Removing the front panel on page 83 2 Remove the top panel refer to Removing the top panel on page 86 3 Remove the switch box cover refer to Removing the switch box cover on page 87 4 Drain the water circuit refer to Draining the water circuit on page 85 5 Remove PCB A1OP refer to Procedure replacing the A10P PCB on page 95 2 2 19 2 Procedure Removal INFORMATION The capillary connection is sealed by a copper seal when removing the brine manometer capillary from the pressure relieve valve make sure not to lose the copper seal 1 Partially remove the insulation from the brine pressure relief valve to gain access to the nut 2 that fixes the capillary 2 Loosen the nut 2 and remove the manometer capillary 3 from the brine pressure relief valve 3 Press the brine mano
134. ld indicate partial blockage 8 Check Leaving water PHE temperature on the user interface 6 1 5 9 Check the saturated high pressure value and its corresponding temperature on the manifold and compare it with the temperature displayed for R1T Leaving water PHE on the user interface 6 1 5 10 A temperature difference of 5 to 10 C is acceptable if the temperature difference exceeds 10 C the type heat exchanger PTH 2 efficiency is too low and could indicate partial blockage Leak test Check 1 1 Check the brine manometer raised brine pressure indicates a refrigerant leak in PHE1 2 Check the water manometer raised water pressure indicates a refrigerant leak in PHE2 Check 2 1 Visually check the plate type heat exchangers PHE1 2 for water or brine leakage 2 In case there is an indication of a possible leakage of PHE1 2 perform a leak test Check 3 1 Connect a manifold to the low and high pressure service ports 2 Recover the refrigerant 3 Perform a pressure test if less than 1 8 kg refrigerant is recovered 4 Pressurize the refrigerant circuit with Nitrogen at 40 bar 5 Check the pressure after 30 minutes 6 Decrease of nitrogen pressure and increase of brine pressure indicates a leakage of PHE1 7 Decrease of nitrogen pressure and increase of water pressure indicates a leak of PHE2 13 01 14 Version 1 0 9 DAIKIN Page 67 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 4 Component chec
135. lding blankets to protect the components that surround the refrigerant high pressure sensor Use 2 cooling clamps to protect the refrigerant high pressure sensor during brazing 1 Proceed in reverse order 2 2 23 Replacing the refrigerant high pressure switch 2 2 23 1 Preliminary actions 1 Remove the front panel refer to Removing the front panel on page 83 2 Remove the switch box cover refer to Removing the switch box cover on page 87 3 Open the Sound Insulation of the heat pump module front side only Opening the sound insulation of the heat pump module front side only on page 87 2 2 23 2 Procedure Removal INFORMATION The refrigerant high pressure switch wire is replaced with the refrigerant high pressure switch A pull line must be attached to the refrigerant high pressure sensor switch before removing the wire 1 Unplug connector X32A 1 from the A10P PCB 2 2 Attach a pull line 4 of approximately 2 meter to the refrigerant high pressure switch wire 3 3 Cut the tie wraps 5 4 While guiding the pull line 4 pull the refrigerant high pressure switch wire 3 until the pull line 4 surfaces at the heat pump module Page 138 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures 5 Detach the pull line 4 from the refrigerant high pressure switch wire 3 Figure 61 Replacing the refrigerant high pressure switch 1
136. ly on page 87 3 Connect a hose to the brine circuit drain 1 Page 84 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures 4 Put the other end of the hose in a recipient with a capacity of 10 liter 5 Open the brine circuit drain valve DR1 2 and wait until brine no longer exits the drain hose 6 Close the brine circuit drain valve DR1 2 and remove the hose from the brine circuit drain 1 Figure 6 Draining the brine circuit 1 Brine circuit drain 2 Brine circuit drain valve DR1 2 1 4 Air purge of the brine circuit To perform an air purge or the brine circuit refer to the instructions of the field supplied brine filling equipment 2 1 5 Draining the water circuit 2 1 5 1 Procedure 1 Switch off the Daikin Altherma GSHP via the user interface 2 Close the field supplied water shut off valves 3 Open the sound insulation of the heat pump module refer to Opening the sound insulation of the heat pump module front side only on page 87 4 Connect a hose to the water circuit drain 1 5 Depressurize the water circuit by opening the water circuit pressure relief valve 6 Open the water circuit drain valve DR4 2 7 Keep the water circuit pressure relief valve open to allow air to enter into the water circuit 13 01 14 Version 1 0 7 DAIKIN Page 85 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedur
137. meter 7 out of its support 13 01 14 Version 1 0 9 DAIKIN Page 129 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures INFORMATION The manometer capillary 3 is held in position by 2 tie wraps 4 5 one tie wrap 5 will be cut Press the insulation at the position of the tie wrap 4 to release the capillary the same tie wrap 4 will be used when installing the new water manometer 4 Through the opening in the rear of the switch box 6 cut the tie wrap 5 5 Through the opening in the rear of the switch box move the manometer capillary 3 towards the top of the Daikin Altherma GSHP while pressing the insulation where the manometer capillary 3 is attached with a tie wrap 4 to allow the capillary nut to pass 6 Guide the manometer capillary 3 through the opening in the brine manometer support 7 Figure 52 Replacing the brine manometer 1 Brine manometer 5 Tie wrap 2 Nut water manometer capillary 6 Switch box opening 3 Manometer capillary 7 Brine manometer support 4 Tie wrap Page 130 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Installation INFORMATION When installing the brine manometer use a tie wrap to fix the capillary against the insulated pipe to ensure strain relief 1 Proceed in reverse order 2 Fill the brine circuit refer to To fill the brine ci
138. move the field connected wiring on terminals X800 3 and X801M 2 on PCB ASP 4 4 Carefully pull the PCB A8P 4 at the right side and unlatch the 4 PCB supports 5 one by one using a small pliers 5 Remove the PCB A8P 4 13 01 14 Version 1 0 7 DAIKIN Page 93 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Figure 15 Replacing the A8P PCB 4 A8P PCB 2 X801 M 5 PCB support 3 X800 Installation 1 Proceed in reverse order 2 2 2 5 Procedure replacing the A9P PCB Removal 1 Unplug all connectors from the A9P PCB 1 2 Loosen and remove the screw 2 that fixes the A9P PCB frame 3 at the bottom 3 Move the A9P PCB frame 3 upwards to unlatch it 4 Remove the A9 PCB frame 3 Page 94 DAIKIN 13 01 14 Version 1 0 ESIE13 03 Part 3 Repair Ground source heat pump Figure 16 Replacing the A9P PCB 1 AQP PCB 3 Frame 2 Screw 4 Catch Installation 1 CAUTION Before fixing the A9 PCB check the PCB frame is locked by the catch Proceed in reverse order 2 2 2 6 Procedure replacing the A10P PCB Removal 1 2 Unplug all connectors from the A10P PCB 1 Loosen and remove the screw 2 that fixes the A10P PCB frame 4 at the bottom Loosen and remove the 2 hex coupling nuts 3 that fix the A10P PCB 1 to the heat sink 5 Move the A10P PCB frame 4 upwards to unlatch it Flip the A10P PCB frame 4 to access the tie wrap
139. mp is stopped Faulty flow switch refrigerant brine PCB Check flow switch see page 62 Replace flow switch see page 100 or A9P replace PCB AQP see page 94 If flow switch failed due to contamination check for source of contamination and consider to install an additional filter 13 01 14 Version 1 0 WDAIKIN Page 25 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 2 Error code based troubleshooting 2 16 H1 Optional temperature sensor error indoor ambient Trigger Effect Reset Optional thermistor detects an abnormal Unit will keep operating Auto reset when problem is solved value open or short circuit Possible cause Check Corrective action Faulty option thermistor R6T hydro PCB Check thermistor R6T see page 57 Replace thermistor R6T see page 141 or A1P hydro PCB A1P see page 91 2 17 H3 High pressure switch system abnormality Trigger Effect Reset High pressure switch is activated when Unit stops operating Via user interface compressor is off Possible cause Corrective action Faulty high pressure switch inverter PCB Check high pressure switch see Replace the high pressure switch see A10P page 69 page 138 or the inverter PCB A10P see page 95 2 18 H9 Outdoor air thermistor R1T abnormality Trigger Effect Reset Thermistor detects an abnormal value Unit stops operating Auto reset when problem is solved open or short circuit
140. n 12 CAUTION The water pressure relief valve 9 is glued to the coupling 11 15 Remove the water pressure relief valve 9 with coupling 11 13 01 14 Version 1 0 DAIKIN Page 109 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Figure 29 Replacing the water pressure relief valve 2 1 Thermal protector backup heater 7 Nut water expansion vessel 2 Backup heater 8 Water pressure relief valve corrugated pipe 3 Water pump 9 Water pressure relief valve 4 Nut 10 Corrugated pipe 5 Seal 11 Coupling 6 Nut corrugated pipe 12 Water drain 16 Unscrew the water pressure relief valve 3 from the coupling 1 17 Remove the glue remainder 4 from the threads of the coupling with a scraper and a brush Figure 30 Replacing the water pressure relief valve 3 vi hola hi eae 1 Coupling 4 Glue remainder 2 Nut 5 Seals 3 Water pressure relief valve Page 110 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Installation CAUTION If damaged replace the seals 5 INFORMATION When gluing the water pressure relief valve 3 to the coupling 1 make sure it is in the same angle 45 as shown above 1 Proceed in reverse order 2 Fill the water circuit refer to To fill the space heating circuit in the Daikin Altherma ground source heat pump Installer reference guid
141. n persons 2 persons R W 0 20 C step 1 C 6 C A 4 3 2 3 Conversion persons 3 persons R W 0 20 C step 1 C 15 C A 4 3 2 4 Conversion persons 4 persons R W 0 20 C step 1 C 17 C A 4 3 2 5 Conversion persons 5 persons R W 0 20 C step 1 C 1 C A 4 3 2 6 Conversion persons 6 persons R W 0 20 C step 1 C 1 C A 4 4 1 2 01 Disinfection R W 0 No 1 Yes A 4 4 2 2 00 Operation day R W 0 Each day 1 Monday 2 Tuesday 3 Wednesday 4 Thursday 5 Friday 6 Saturday 7 Sunday A 4 4 3 2 02 Start time R W 0 23 hour step 1 hour 23 A 4 4 4 2 03 Temperature target R W 60 C A 4 4 5 Duration R W 60 min 60 C 0 Absolute 1 Weather dep A 6 2 1 D 00 L Preferential kWh rate Allowed heaters R O A 4 7 0 0B Weather dependent curve DHW setpoint for high ambient temp for DHW R W 35 6 0E C step 1 C WD curve 45 C A 4 7 0 0C Weather dependent curve DHW setpoint for low ambient temp for DHW R W 45 6 0E C step 1 C WD curve 60 C A 4 7 0 OD Weather dependent curve High ambient temp for DHW WD curve R W 10 20 C step 1 C 15 C A 4 7 0 0E Weather dependent curve Low ambient temp for DHW WD curve R W 20 5 C step 1 C 20 C L Heat sources L Backup heater A 5 1 1 4 00 Operation mode R W 0 Limit 1 Enable 2 Only DHW A 5 1 2 Auto emergency operation R W 0 Manual 1 Automatic A 5 1 3 4 07 Enable BUH step 2 R W 0 No 1 Yes A 5 1 4 5 01 Eq
142. ncrease the temperature of the refrigerant before it s being exchanged with water Operation range can be found back in the engineering databook The requested water temperatures are delivered by heat pump Operation and were necessary by assistance of the backup heater When the GSHP unit is starting operation following behaviour occurs GROUND SOURCE HEAT PUMP START STOP CONTROL Decide thermo Thermo Remocon ON ON t 7 ON Sampling Inverter control Sampling OFF delta T 3 minutes H20 pump 45s Brine pump A 1 min Time lag OFF ON Compressor Inverter control OFF setpoint Pressure equalisation EV 480 pls H20 pump sampling operation only in case of leaving water temperature control not in case of room temperature control 13 01 14 Version 1 0 DAIKIN Page 13 Ground source heat pump ESIE13 03 Part 1 Introduction 3 General operation of ground source heat pump When space heating thermo on is decided e The brine pump will start operating with a continuous speed e The inverter water pump will gradually adjust its speed to reach and maintain the required delta T this is the water temperature difference between the leaving water and entering water refer to field setting 9 09 in Field settings on page 153 e The inverter compressor after pressure equalisation will gradually adjust its speed to reach and maintain the required w
143. ng and brine circuit e Brine leakage e Relief valve hoses e Pressure relief valves of Space Heating and brine circuit e Pressure relief valve of Domestic Hot Water tank e Filters e Draining of the Domestic Hot Water tank e Anode e Descaling and chemical disinfection e Switch box 2 Maintenance procedures WARNING Before performing any maintenance power off the unit INFORMATION After all checks are made make sure the water and brine circuits are filled properly again and fluid pressures are okay 1 2 bar The following procedures describe how to perform the maintenance on each items 2 1 Checking fluid pressure of Space Heating and brine circuit Actions Remarks Check if fluid pressure between 1 and 2 bar Manometers are located under grey flap on front panel If pressure lt 1 bar add fluid Do not add to over 2 bar 13 01 14 Version 1 0 WDAIKIN Page 147 Ground source heat pump ESIE13 03 Part 4 Maintenance 2 Maintenance procedures 2 2 Checking for brine leakage Actions Remarks Carefully check if brine leakage is noticeable around the inside of Because the brine piping might sweat in the compressor depart the unit mainly in the compressor department ment a small drain pan is mounted Open the sound insulation jacket and check if brine leakage is noticeable inside this enclosed volume 2 3 Checking the pressure relief valve hose Actions Remarks Check whether the pressure r
144. nstallation of new 3 way valve motor a pull line must be attached to the 3 way valve motor wire before removal 1 Unplug connectors X33A 1 and X85A 2 from the A1P PCB 3 2 Loosen and remove the 2 screws 4 that fix the fixation plate 5 3 Detach the right side of the fixation plate 5 4 Flip the fixation plate 5 13 01 14 Version 1 0 DAIKIN Page 123 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Figure 44 Replacing the 3 way valve motor 1 1 X33A 4 Screw 2 X85A 5 Fixation plate 3 A1 PCB 5 Unplug connectors X20A 1 and X28A 2 from the A1P PCB 3 6 Attach a pull line 5 of approximately 2 meter to the 3 way valve motor wire 4 7 While pulling the 3 way valve motor wire 4 guide the connectors on the 3 way valve motor wire 4 through the grommet 8 Pull the 3 way valve motor wire 4 until the pull line 5 appears at the 3 way valve 9 Detach the pull line 5 from the 3 way valve motor wire 4 Figure 45 Replacing the 3 way valve motor 2 Ras A 1 X20A 4 3 way valve motor wire 2 X28A 5 Pull line 3 A1P PCB Page 124 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures 10 Pull the 3 way valve knob 1 to remove it from the 3 way valve motor 3 11 Loosen the screw 3 Figure 46 Replacing the 3 way valve motor 3 Se 1 3 way valve knob 3 Scr
145. ntrol Brine pump start stop condi behavior tions e Brine pump starts space heating or domestic hot water thermostat on condition reached Brine pump stops 45 seconds after space heating or domestic hot water thermostat off condition reached 3 14 2 Water pump behavior Possible failures Root cause Corrective action Root cause category software control Unexpected water pump Water pump software control Water pump start stop condi behavior tions e During space heating or domestic hot water off the pump is off During space heating or domestic hot water on pump operation depends on setting F 0D continuous sample or request Remark in domestic hot water operation the pump starts later than the compressor to avoid that the tank is cooled down by the cold water loop Root cause category parameter setting Incorrect setting of pump oper Incorrect setting Confirm setting F 0 Adapt setting F 0 if required ation mode continuous sam factory setting F 0 1 ple request setting F 0D 13 01 14 Version 1 0 WDAIKIN Page 51 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 3 Symptom based troubleshooting 3 15 User interface no or strange display Possible failures Root cause Corrective action Root cause category component electrical Hydro PCB A1P not opera No power supply Confirm if a small green led Re establish power to PCB tional Faulty transformer TR1 is bl
146. o 247 2696 20 0000 oe 198 4674 16 1008 3000 160 2244 13 0426 ES 130 0697 10 6281 106 1517 5 9407 EE 59 4735 2 9349 N 29 3499 95 1 5575 85 15 4487 13 01 14 Version 1 0 DAIKIN Page 59 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 4 Component checklist 4 4 Safety valve SV1 SV2 pressure relief valve Technical specification Description The pressure valve SV1 will open if the brine circuit pressure exceeds 3 bar A pressure relief valve is a safety component that The pressure valve SV2 will open if the water circuit pressure exceeds 3 bar is designed to open at a predetermined set pres sure to protect the brine and water circuit The brine pressure relief valve SV1 is used to limit the pressure in the brine circuit The water pressure relief valve SV2 is used to limit the pressure in the water circuit Location Piping diagram B1PH S1PH high high pressure pressure R3T door COMPRESSOR R T si ensor switch Care CI RZ E1H E2H 7 Check procedure Mechanical check T 2 10 Switch off the Daikin Altherma GSHP via the user interface Remove the front panel refer to the Daikin Altherma ground source heat pump Installer reference guide EGSQH10S18AA9W Turn the brine pressure relief valve knob 1 turn and listen if brine exits for a short moment Check the brine pressure it should be between 1 and 2 bar and stable when the pressure relief valve
147. o the water pressure relief valve 5 5 Remove the seal 5 from the water manometer connection 6 Remove the clip 6 that fixes the backup heater 8 to the domestic hot water circuit CAUTION The backup heater is still connected to the Daikin Altherma GSHP 7 Remove the backup heater 8 water pump 7 water pressure relief valve 5 and the corrugated pipe 2 from the Daikin Altherma GSHP and lay the assembly on a support 9 Page 108 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Figure 28 Replacing the water pressure relief valve 1 1 Lower nut 6 Clip 2 Corrugated pipe 7 Water pump 3 Seal 8 Backup heater 4 Nut 9 Support 5 Water pressure relief valve 8 Remove the thermal protector backup heater 1 from the backup heater 2 9 Loosen the nut 4 that fixes the water pressure relief valve 8 to the water pump 3 10 Put the backup heater 2 with water pump 2 aside 11 Loosen the nut 4 that fixes the water pressure relief valve 2 to the corrugated pipe 10 12 Remove the seal 5 from the nut 6 13 Loosen the nut 7 that fixes the water expansion vessel hose 12 to the water pressure relief valve 9 CAUTION Do not twist the water drain hose 12 The water drain 12 is glued to the water pressure relief valve 9 14 Screw the water pressure relief valve 9 with coupling 11 from the water drai
148. or CODSS cticschsacensensanustescatectest lt aaddgecanecacceoces ene hiatecctonsiastacusnteetescergau ee wei uded beset acccudcomiebarescenaneneseeeele 18 MA COICO UG OF ae a ses nc ce ce ee en cs eee ese eee eee 18 2 Error code based troubleshooting ccccccsccsseecsecceeecceeccaecceeesaeeecueeaueesaeesneceuecsueecseesseesseessuessueesaeessaseaaes 20 2 1 AA Back up heater Safety error cccccceecccccsesceecceceececceuseeeecsueeeceseueccesseuseeesseaueeeessuseeecsseeeeessuseeesssaaeees 20 2 2 AH Disinfection operation error ccccccccccecccceeeceeceeceeceeceeceeeceeseeceeseeeeeseuseeseeeeesseueeeseueeeesesaeeesseeesseeessaees 21 2 3 A1 Hydro PCB abnormality ccecccccceeccceceeeeeeeeeeeeeeeeseeeeeeeeeeseeeeseeeeeeeesseeeeeessaeeeessaeeeeeeesasaeeeeessegeeeessaeeees 21 2 4 CJ 02 User interface room temperature error cccccceeeccceeececeeececseececaeeeessuaeeseuaeeeseaeeseeaeeesauseeesseeessneees 21 2 5 C0 Flow sensor error cnaseces cacao esacancenesassnecepoeseencce see be eater eccrses6s ke nese neaene ase eo ocGoras sea csieg see einse sec pecte em annern neen 22 2 6 C4 Refrigerant liquid thermistor R3T A1P abnormality ee ccccceseeeeeeeeeeeeeeseaeeeeeeseeeeeesseaseeeeeessaaeeees 22 2 7 EC Domestic hot water temperature erfor ccccceccccceecccceeececeeeeceeeeceeeceeseeseeseeeeeseaeeeseuecesseaaeeesaneeesaaeees 22 2 8
149. oting 2 Error code based troubleshooting 2 9 E3 High pressure abnormality Trigger Effect 1 High pressure switch opens due to Unit will stop operating Via user interface pressure gt 41 7 bar 2 High pressure control HP gt 38 bar occurs 16 times within 300 minutes Possible cause Check Corrective action Refrigerant overcharge Check for refrigerant overcharge Charge the correct refrigerant amount 1 8 kg Humidity in refrigerant ice formation in Check for humidity in the refrigerant In case of suspicion of humidity recover expansion valve vacuum and recharge with virgin refriger ant Non condensables in refrigerant Check for non condensables in refriger In case of suspicion of non condensables ant recover vacuum and recharge with virgin refrigerant Refrigerant circuit is clogged Check for possible blockage blockages can be checked by measuring the refriger ant pipe temperature Sudden drop in temperature could indicate a blockage remark this is not valid for the expansion valve Faulty high pressure sensor refriger Check high pressure sensor see Replace the high pressure sensor see ant brine PCB AQP page 69 page 135 or PCB AQP see page 94 Faulty high pressure switch inverter PCB Check high pressure switch see Replace the high pressure switch see A10P page 70 page 138 or the inverter PCB A10P see page 95 2 10 E5 Compressor motor lock Trigger Effec
150. ow ambient temp for LWT main zone heating WD curve R W 9 00 9 01 step 1 C A 8 6 04 What is the capacity of the backup heater step 2 R W 0 10kW step 0 2kW 60 C 3kW A 8 1 03 Leaving water value for high ambient temp for LWT main zone heating WD curve R W 9 00 min 45 9 01 step 1 C A 8 6 05 R W 0 25 C A 8 6 06 R W 0 A 8 1 04 R W 0 A 8 6 07 R W 0 A 8 1 05 R W 0 A 8 6 08 Reheat hysteresis R W 2 20 C step 1 C A 8 1 06 R W 20 10 C A 8 1 07 R W 35 A 8 6 09 R W 0 A 8 1 08 R W 22 A 8 6 0A What is the desired comfort storage temperature R W 30 6 0E C step 1 C A 8 1 09 R W 18 60 C A 8 1 0A What is the averaging time for the outdoor temp R W 0 No averaging A 8 6 0B What is the desired eco storage temperature R W 30 min 50 6 0E C step 1 C 1 12 hours 45 C 2 24 hours A 8 6 0C What is the desired reheat temperature R W 30 min 50 6 0E C step 1 C 3 48 hours 45 C 4 72 hours A 8 6 0D What is the desired setpoint mode in DHW R W 0 Reheat only A 8 2 00 When should the disinfection function be executed R W 0 Each day 1 Reheat sched 1 Monday 2 Scheduled only 2 Tuesday A 8 6 0E What is the maximum tank temperature setpoint R W 60 C 3 Wednesday A 8 7 00 R W 0 4 Thursday A 8 7 01 R W 2 5 Friday A 8 7 02 How many leaving water temperature zones are there R W 0 1 LWT zone 6 Saturday 1 2 LWT zones 7 Sunday A 8 7 03 P
151. p in temperature could indicate a blockage remark this is not valid for the expansion valve Refrigerant overcharge Check for refrigerant overcharge Charge the system with 1 8 kg refrigerant Faulty compressor Check compressor see page 68 Replace compressor see page 117 Faulty inverter PCB A10P Check inverter PCB see page 74 Replace inverter PCB see page 95 2 31 L9 Stall prevention time lag Trigger Effect Reset Inverter PCB detects compressor over Unit will stop operating Via user interface load at start up Possible cause Corrective action Refrigerant circuit is clogged Check for possible blockage blockages can be checked by measuring the refriger ant pipe temperature Sudden drop in temperature could indicate a blockage remark this is not valid for the expansion valve Refrigerant condition is not OK HP LP Check refrigerant condition gt 0 2 MPa at start up Faulty compressor Check compressor see page 68 Replace compressor see page 117 Faulty inverter PCB A10P Check inverter PCB see page 74 Replace inverter PCB see page 95 2 32 P1 Open phase or power supply voltage imbalance Trigger Effect Reset Inverter PCB detects incorrect power sup Unit will stop operating ply Possible cause Check Corrective action Power supply is not OK gt open phase Check the power supply a Power supply is not OK gt imbalance Check power supply for voltag
152. peration when suction superheat is lt 4 C Remark check the suction superheat by measuring the suction temperature with con tact thermometer before the compressor and comparing with the saturated evaporation temperature Root cause category installation 3 Symptom based troubleshooting Activation of the protection function can be caused by var ious reasons therefore we recommend to check the fol lowing e Check refrigerant charge e Check expansion valve for correct operation see page 71 and check suction sensor R3T see page 57 Check the refrigerant circuit for blockages Corrective action Based on the diagnosis exe cute one of the following actions e Correct the refrigerant charge total charge 1 8 kg Replace expansion valve see Replacing the electronic expansion valve K1E body on page 131 Replacing the electronic expansion valve K1E electromagnet on page 133 or suction sensor R3T Remove detected blockages from the refrigerant circuit PHE condensor water side partial blockage Dirty water particles Check waterflow rate registered by flowsensor Check water side plate type heat exchanger for blockage see page 66 e If required replace the water plate type heat exchanger e Check the water quality Root cause category component mechanical Limited heat exchange between refrigerant loop and heat sink inverter could result in high inverte
153. point on room thermostat User set too high domestic hot water setpoint by schedule or manual operation User set too high leaving water temperature setpoint by schedule or manual operation User set too high room set point by schedule or manual operation Root cause category parameter setting Too high leaving water temper ature LWT weather depend ent User interface thermostat used with setting A 2 1 7 on value 1 external thermostat con trol Pump keeps running all the time during space heating operation Setting disinfection operation day 2 00 was set to 0 each day Unit is running in emergency operation and is using backup heater only 4 06 is set to 1 13 01 14 Version 1 0 Incorrect weather dependent setting gt too high LWT limit set A 3 1 1 3 A 3 1 2 3 Wrong setting of A 2 1 7 unit control method Wrong setting of A 2 1 9 pump operation Setting disinfection operation day 2 00 was set to 0 each day Unit is running in emergency operation and is using backup heater only 4 06 is set to 1 Check the drain connection of the brine safety valve e Check safety valve see page 60 e Check water brine quality Check domestic hot water tank set temperature avoid electric heater use Check leaving water setpoint Check room thermostat set point Check LWT high limit in weather dependent setting 1 03 Check setting A 2
154. ppens in short water circuit for example domestic hot water circuit 2 43 8F Backup heater outlet water temperature error during domestic hot water operation Trigger Effect Reset R2T A1P detects temperature above Unit will stop operating Via user interface 75 C during domestic hot water operation Possible cause Check Corrective action Increased water temp by external heat Check if another heat source is installed Correct hydraulic field circuit Refer to the source on the same water circuit Installer Reference Guide Faulty thermistor R2T hydro PCB A1P Check thermistor R2T see page 57 Replace thermistor R2T see page 141 hydro PCB A1P see page 91 Faulty backup heater contactors sticking Check backup heater control contactors Replace the contactor s K1M K2M K1M K2M or hydro PCB A1P K1M K2M see page 53 Page 34 WDAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 2 Error code based troubleshooting 2 44 8H Backup heater outlet water temperature error Trigger Effect Reset R2T A1P thermistor after backup Unit will stop operating Via user interface heater detects temperature above 75 C Possible cause Check Corrective action Increased water temp by external heat Check if another heat source is installed Correct hydraulic field circuit Refer to the source on the same water circuit Installer Reference Guide Faulty thermistor R2T
155. quality complies with EU directive 98 83 EC Check the system for leaks after each repair modification of the water side Check drainage system s after repairs Be careful when tilting units as water may leak 13 01 14 Version 1 0 DAIKIN Page 11 Ground source heat pump ESIE13 03 Part 1 Introduction 2 Safety precautions 2 4 Information INFORMATION Make sure refrigerant piping installation complies with applicable legislation In Europe EN378 is the applicable stand ard INFORMATION Make sure the field piping and connections are not subjected to stress Page 12 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 1 Introduction 3 General operation of ground source heat pump 3 General operation of ground source heat pump The total ground source heat pump system consists out of 3 loops brine refrigerant and water 2 plate heat exchangers transmit the heat from the brine to the refrigerant and from refrigerant to water which is then used for space heating or domestic hot water House Heat pump Heat pump Compressor Electrical backup hot heater water ce NE _ Evaporator Expansion Condenser valve Space heating radiator underfloor heating Water pump fan coil A brine pump and a water pump ensure flow in the brine and water circuit In the refrigerant circuit there is a compressor which will increase the pressure and thus i
156. quired replace thermistor R2Tin see page 141 or PCB A1P see page 91 Adapt system design Corrective action Adjust brine pressure if required 1 2 barg Brine circuit partially blocked Obstruction in brine system Check brine circuit for block Remove possible blockages ages and check the brine quality Air in the brine system Brine filter F11 partially blocked Not enough air purged Dirty brine Root cause category component mechanical Internal pump friction Brine pump M3P mechani cal problem Page 46 Check if all air purge valves are open Check if air purge valves are installed on all highest points of the field installed brine system Check brine filter Check brine pump see page 63 DAIKIN Purge air out of unit and field supplied brine system e Clean the brine filter See page 96 e Check the brine quality If required replace brine pump see page 103 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 3 Symptom based troubleshooting 3 10 Increased sound level water pump Possible failures Root cause Corrective action Root cause category installation Water filter F12 blocked Dirty water e Check water filter Clean the water filter see e Check water quality page 98 Air in the water circuit Not enough air purged e Check ifallairpurge valves Purge air out of unit and field are open supplied w
157. r digital I O PCB receiver PCB wireless On OFF A p p P P P P P P a i a eua rows Bm high pressure sensor esimes Pushbutton eama faor c 1 2 DR3 4 H B 1 o D drain BRINE D drain BRINE drain WATER D drain hot water tank DS1 A8P B DS1 A8P dipswitch dipswitch DS1 A10P dipswitch E backup heater element 1 kW E b F a a EH ackup heater element 2 kW por feraren vese mne E a DS1 AQP EXP2 expansion vessel WATER FiB o overcurrent fuse backup heater FLU F2U A4P F2U A4P fuse 5 A 250 V F1U F2U A9P 1 Z 3 3 4 4 8 9 P 1 V R R R R 1 2 1 fuse 35 5 A 500 V fuse T 6 3 A 250 V filter BRINE SIDE filter WATER SIDE fuse T 6 3 A 250 V LED F3U F6U A9P FI FI2 FU1 A1P a E HiP H P I Hap te KIE __ electronic expansion valve Kim K2M _ contactor backup heater M T z E J 2 H K safety contactor BUH K6 M relay K R LIR L3R relay on PCB reactor reactor transmission line motor compressor main water supply pump domestic hot water pump a brine supply pump Shut off valve 7 DAIKIN 3 way valve for floorheating domestic hot water M3 MU PS PG PG muffler switching power supply ressure gauge BRINE ressure gauge WATER E p aE plate type heat exchanger BRINE REFRIGERANT p a a E x S 1 2
158. r ES Compressor motor lock PJ Defective capacity setting E7 Brine flow error UA PCB combination error E9 Expansion valve abnormality UO Refrigerant shortage F3 Discharge pipe temperature control U1 Reverse phase or open phase HC Domestic hot water temperature error U2 Power supply voltage abnormality HO 01 Brine flow switch error U3 00 Abnormal stop of underfloor heating dry out scheduled H1 Optional temperature sensor error indoor ambient operation H3 High pressure switch system abnormality U4 Defective indoor outdoor transmission H9 Outdoor air thermistor R1T abnormality U5 00 Transmission error between user interface and hydro PCB J1 High pressure sensor abnormality J3 Discharge thermistor abnormality 7H 01 Water flow abnormality J5 Suction thermistor R3T abnormality 8F Backup heater outlet water temperature error during domestic J6 Heat exchanger refrigerant inlet thermistor R4T abnormality hot water operation 8H Backup heater outlet water temperature error JT Brine inlet thermistor R5T abnormality 80 R4T entering water thermistor abnormality J8 Brine outlet thermistor R6T abnormality 81 Leaving water thermistor R1T abnormality 2 1 AA Back up heater saf
159. r temperatures and limited compressor fre quency Bad contact between refrigerant loop and inverter heat sink Lack of refrigerant Check contact between refrig erant loop and inverter PCB heat sink Root cause category component electrical Discharge thermistor R2T AYP higher temperature measured than actual Heat sink inverter thermistor R10T A10P deviation Expansion valve K1E incor rect control superheat too high Page 50 Deviation of thermistor higher temperature measured than actual Deviation of thermistor higher temperature measured than actual Faulty suction R3T thermistor Faulty low pressure liquid R4T A9P thermistor Faulty expansion valve control Check discharge thermistor R2T see page 57 Check thermistor R10T see page 57 e Check thermistor R3T see page 5 7 e Check the expansion valve see page 71 DAIKIN Replace discharge thermistor R2T see page 141 or PCB AQP see page 94 Replace R10T see page 143 or PCB A10P see page 95 Replace thermistor R3T see page 141 or replace expan sion valve see page 131 page 133 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 3 Symptom based troubleshooting 3 14 Pump related 3 14 1 Brine pump behavior Possible failures Root cause Corrective action Root cause category software control Unexpected brine pump Brine pump software co
160. rant high pressure sensor 3 1 Welding blanket not illustrated 3 Cooling clamp not illustrated 2 Refrigerant high pressure sensor Installation 1 Proceed in reverse order Page 140 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures 2 2 24 Replacing a thermistor except R10T 2 2 24 1 Preliminary actions 1 Remove the front panel refer to Removing the front panel on page 83 2 Remove the switch box cover refer to Removing the switch box cover on page 87 2 2 24 2 Procedure The position of all thermistors except R1T out and R107 is illustrated in Thermistor location on page 141 Figure 65 Thermistor location BRINE BRINE LEAVING ENTERING DOMESTIC DOMESTIC HOT WATER COLD WATER OUT IN WATER WATER LEAVING ENTERING space heating space heating DIU p me F 4 be a 1 R1T in 6 R4T in 2 R2T in 7 R4T out 3 R2T out 8 RST in 4 R8T in 9 RST out 5 R3T out 10 R6T out 13 01 14 Version 1 0 7 DAIKIN Page 141 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Thermistor Processed on PCB Connector pin Access Information R1T in outlet water A1P X5A 1 2 Access via front of heat pump module displace water expansion vessel refer to Replacing the water expansion vessel on page 121 R2T in after BUH X6A 1 2 Access via front of heat pump module R3T in
161. rate domestic hot water temperature control User interface A2P thermo Deviation of user interface Compare temperature meas In case of deviation the room stat sensor has incorrect read room temperature sensor ured by user interface with temperature offset can be ing of room temperature actual room temperature adjusted through setting 2 0A 3 6 Water leakage or water release via the water pressure relieve valve Possible failures Root cause Corrective action Root cause category installation Drain connection of water Bad connection between unit Check the drain connection of Correct the drain connection if safety valve SV2 leaking drain pipe and field drain pipe the water safety valve required Drain of bottom drain plate not Bad connection of bottom Check the drain connection Correct the drain connection if well connected drain plate and field drain con between the bottom drain required nection plate and the field drain Leakage of drain valve water Valve not completely closed Check if drain valve is closed Close the drain valve side DR3 DR4 Root cause category component mechanical Broken bellow of brine side Component failure Check expansion vessel see Replace expansion vessel expansion vessel EXP1 page 61 see page 122 Expansion vessel EXP1 not Component failure Check expansion vessel see Replace expansion vessel pressurized page 61 see page 122 Safety valve water side
162. rcuit in the Daikin Altherma ground source heat pump Installer reference guide 2 2 20 Replacing the electronic expansion valve K1E body 2 2 20 1 Preliminary actions 1 Remove the front panel refer to Removing the front panel on page 83 2 Remove the switch box cover refer to Removing the switch box cover on page 87 3 Open the Sound Insulation of the heat pump module front side only Opening the sound insulation of the heat pump module front side only on page 87 2 2 20 2 Procedure Removal CAUTION Use welding blankets and cooling clamps to protect the components that surround the expansion valve 1 Remove the motor 1 from the expansion valve 2 Cutthe 2 tie wraps 2 3 Slide the insulation 3 downwards 4 Remove temperature sensor R4T 4 from its support refer to Replacing a thermistor except R10T on page 141 13 01 14 Version 1 0 DAIKIN Page 131 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Figure 53 Replacing the electronic expansion valve K1E body 1 1 Expansion valve electromagnet 3 Insulation 2 Tie wraps 4 R4T 5 Use a welding blanket 1 to protect the components that surround the expansion valve body 6 Place 2 wet cooling clamps 2 on the expansion valve body 3 7 Braze the expansion valve body piping and remove the expansion valve Page 132 DAIKIN 13 01 14 Version 1 0 Ground source heat pump 2 Unit specific r
163. remove the 2 screws 1 that fix the upper brine expansion vessel support 2 2 Remove the brine expansion vessel 4 from the lower brine expansion vessel support 3 and put it aside 3 Loosen the nut 5 that fixes the flexible hose 4 Remove the brine expansion vessel 4 5 Remove the seal 6 form the nut 5 Figure 43 Replacing the brine expansion vessel 1 Screw 4 Brine expansion vessel 2 Upper brine expansion vessel support 5 Nut 3 Lower brine expansion vessel support 6 Seal Page 122 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Installation CAUTION If damaged replace the seal 6 CAUTION If required adjust the pressure of the brine expansion vessel 4 1 Proceed in reverse order 2 Fill the brine circuit refer to To fill the brine circuit in the Daikin Altherma ground source heat pump Installer reference guide 2 2 16 Replacing the 3 way valve motor 2 2 16 1 Preliminary actions 1 Switch off the Daikin Altherma GSHP via the user interface 2 Remove the front panel refer to Removing the front panel on page 83 3 Remove the top panel refer to Removing the top panel on page 86 4 Remove the switch box cover refer to Removing the switch box cover on page 87 2 2 16 2 Procedure Removal INFORMATION The 3 way valve wire is replaced together with the 3 way valve motor To facilitate the i
164. revent oxide film from forming nitrogen purity 2 99 99 Do not stop the nitrogen gas until the refrigerant piping has completely cooled down 13 01 14 Version 1 0 9 DAIKIN Page 81 Ground source heat pump ESIE13 03 Part 3 Repair 1 General Repair procedures 1 3 Products 1 3 1 Required products when servicing the Daikin Altherma GSHP Some Daikin Altherma GSHP parts are sealed and must be sealed again after replacement Only use the same thread sealant 1 whenever required When replacing R10T it might be necessary to apply some heat sink compound 2 Figure 2 Required products fil HEAT SINK COMPOUND Sigillalile nch ite Raccords l tning Gevindi tit a ES 5 Aa vG Q 4S w y S v S G 9 Eta ar0Scas 1 Thread sealant Permabond A131 local supply 2 Heat sink compound Part number 999300P 1 4 Tools 1 4 1 Required special tooling when servicing the Daikin Altherma GSHP Daikin strongly recommends to use special tools to avoid damage to the equipment or to facilitate the replacement of certain spare parts Figure 3 Required tools 1 Cooling clamp 3 Pliers wrench Knipex 87 05 300 or equivalent 2 Pliers wrench Knipex 86 03 300 or equivalent 4 Welding blanket Page 82 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures 2 Unit specific repair procedures 2 1 Unit specific ref
165. rigerant brine and water procedures 2 1 1 Removing the front panel 1 Switch off the Daikin Altherma GSHP via the user interface WARNING The front panel is heavy Be careful not to jam your fingers when opening the unit 2 Loosen and remove the 2 screws 1 at the bottom of the unit that fix the front panel 2 3 Slide the front panel of the unit downwards and remove it from the unit Figure 4 Removing the front panel 1 Screw 2 Front panel 13 01 14 Version 1 0 DAIKIN Page 83 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures 2 1 2 Refrigerant Handling Refrigerant Action High Pressure Service Port Low Pressure Service Port C E A 2 1 2 1 Procedure 1 Switch off the Daikin Altherma GSHP via the user interface 2 Remove the front panel Removing the front panel on page 83 3 Open the sound insulation of the heat pump module front side refer to Opening the sound insulation of the heat pump module front side only on page 87 Figure 5 Refrigerant service ports 1 Low pressure service port 2 High pressure service port WARNING All hazardous waste shall be managed in accordance with federal state and local regulations 2 1 3 1 Procedure 1 Switch off the Daikin Altherma GSHP via the user interface 2 Open the sound insulation of the heat pump module front side refer to Opening the sound insulation of the heat pump module front side on
166. rine circuit Actions Remarks Follow the actions in below picture The filters are located on top of the unit They are horizontally installed so there is a possibility that some fluid comes out when removing the filter cartridges Use a small container to collect the fluids Handle the filter with care Do NOT use excessive force when you reinsert the filter so as NOT to damage the water filter mesh Make sure the snap ring is correctly located or leakage might occur Refer to Cleaning the brine filter on page 96 and Cleaning the water filter on page 98 13 01 14 Version 1 0 DAIKIN Page 149 Ground source heat pump ESIE13 03 Part 4 Maintenance 2 Maintenance procedures 2 Draining the Domestic Hot Water tank Actions Remarks e Open the front panel e Make sure that all taps and air vent are open otherwise the e The drain hose is located at the right side of the unit Cut the tank might be sucked vacuum and the water will not be fully tie wraps or tape and bring the flexible drain hose forward drained 2 8 Anode Actions Remarks 2 9 Descaling and chemical disinfection Actions Remarks Depending on water quality and set temperature scale can When using means for descaling or chemical disinfection it must deposit on the heat exchanger inside the domestic hot water be ensured that the water quality remains compliant with EU tank and can restrict heat transfer For this reason descaling directive
167. rk site environment is clean and safe to work in Beware of spilled fluids like water oil or other sub stances Protect bystanders from injury and property from possible damage cause by service works WARNING 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 children can play with them Possible risk suffocation WARNING Do NOT touch the air inlet or aluminium fins of the unit WARNING e Do NOT place any objects or equipment on top of the unit e Do NOT sit climb or stand on the unit WARNING During tests NEVER pressurize the product with a pressure higher than the maximum allowable pressure as indi cated on the nameplate of the unit WARNING e Never mix different refrigerants or allow air to enter the refrigerant system e Never charge recovered refrigerant from another unit Use recovered refrigerant only on the same unit where it was recovered from or have it recycled at a certified facility WARNING RISK OF BURNING e 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 e Do NOT touch any accidental leaking refrigerant Page 10 DAIKIN 13 01 14 Version 1 0
168. rror is reset after power trical interference reset and error happens again after awhile 2 41 U5 00 Transmission error between user interface and hydro PCB Trigger Effect Reset Hydro PCB detects abnormal transmis Unit will stop operation Auto reset sion to user interface for a certain time Possible cause Corrective action Both user interfaces are set to the same Check setting A 2 1 B on both user inter Correct user interface location via setting user interface location in room at unit faces A 2 1 B only applicable when 2 user interfaces are connected to 1 unit Faulty user interface Replace user interface Faulty hydro PCB A1P Replace PCB A1P see page 91 External factor e g electrical noise Check for source which could cause elec cause when error is reset after power trical interference reset and error happens again after awhile 13 01 14 Version 1 0 WDAIKIN Page 33 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 2 Error code based troubleshooting 2 42 7H 01 Water flow abnormality Trigger Effect Reset Flow sensor detects a water flow below Unit will stop operating Via user interface 7 l min for 15 seconds Possible cause Check Corrective action Closed valve in water circuit Check if all valves are open Adjust open valve Water pressure is too low Check the water pressure on the pressure Increase water pressure till 2 bar R
169. s L Room temperature Range step Default value Installer setting at variance with default value Date Value 7 4 1 1 Comfort heating R W 3 07 3 06 step A 3 2 4 21 C 7 4 1 2 Eco heating R W 3 07 3 06 step A 3 2 4 19 C 7 4 2 1 8 09 Comfort heating R W 9 01 9 00 step 1 C 7 4 2 2 8 0A Eco heating R W A step 1 C 7 4 2 5 Comfort heating R W ae 0 C step 1 C 7 4 2 6 Eco heating R W z TA step 1 C 2 C L Tank temperature 7 4 4 Installer settings L System layout L Standard R W 7 4 3 1 6 0A Storage comfort R W 30 6 0E C step 1 C 60 C 7 4 3 2 6 0B Storage eco R W 30 min 50 6 0E C step 1 C 45 C 7 4 3 3 6 0C Reheat R W 30 min 50 6 0E C step 1 C 45 C L Quiet level 0 Level 1 1 Level 2 2 Level 3 A 2 1 1 E 00 Unit type R O 5 Ground source A 2 1 2 E 01 Compressor type R O 1 16 A 2 1 3 E 02 Indoor software type R O 1 Type 2 A 2 1 5 5 0D BUH type R O 4 3PN 1 2 A 2 1 6 D 01 Preferential kWh rate R W 0 No 1 Active open 2 Active closed A 2 1 7 C 07 Unit control method R W 0 LWT control 1 Ext RT control 2 RT control A 2 1 8 7 02 Number of LWT zones R W 0 1 LWT zone 1 2 LWT zones A 2 1 9 F OD Pump operation mode R W 0 Continuous 1 Sample C 07 0 2 Request C 07 0 A 2 1 A E 04 Power saving possible R O 0 No A 2 1
170. s after pressing BS2 LED status after pressing BS3 LED status after pressing BS3 4 Component checklist LED status OFF O ON Blink HiP H2P H3P H4P H1P H2P H3P H4P O H1P H2P H3P H4P O H1P H2P H3P H4P O H1P H2P H3P H4P O H1P H2P H3P H4P O H1P H2P H3P H4P H5P H5 5 2L O1 a O1 W me O1 5 e O1 v H5P H6P H7P H6P H7P H6P H7P O H6P H7P H6P H7P O H6P H7P O H6P H7P O 000o oo Check that all leds on the Inverter Analyzer are lit if not replace the inverter board refer to Procedure replacing the A10P Repeat step 7 to disable the inverter analyzer mode by disabling the setting mode 2 item 2 from binary 2 to binary 1 on PCB A10P 13 01 14 Version 1 0 Switch off the main power to the unit Disconnect the inverter analyzer from the U V W wiring Re connect the U V W leads to the compressor 9 DAIKIN Confirm that LED s on the inverter analyzer stopped blinking and wait for 10 seconds Page 75 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 4 Component checklist 4 16 Water flow sensor B1L Technical specification Description The water flow sensor output signal versus flow is shown in the graph below The water flow sensor measures the flow in the water circuit Location Piping diagram Switch box Fo G Es rs z z E1H E2H BAC
171. saeeesseeesaneesseeeeseees 51 3 15 User interface no or Strange display ccceccccseecccccssececceeseeecceeseeeccceuceeeceuseeeeseuseeeessssesesesseseeessnageesenas 52 A SOM IONE MI CMO CIN GE eats et ceterpe ten seecetadesteneeieadivuctoscesanceeacestoseussatonecededcdansestec ioc EEE 53 4 1 Required tools for component check cccccceccccesecccceeceeeeeceeseeeeeceeceeseeeceseueeeseeeceseeeesseeeessueeessaeeesseeessaeeessaes 53 A 2 Backup heater ETH EZH epeceqetanneesucetancBennsatenadiicaattnenne avbesaslsisussatinstosataeanins penal set asetoaseabiinasiciessseeaniravactseaeaseregeene 53 4 3 Thermistors R1T R2T R3T R4T RST ROT RIOT aaannnannnnnnnnnnnnnnnnnnnnnnennnnnnnnenrnnnrrrnnrreenrrnnnrnnrrrnnrrrreenreeenne 57 4 4 Safety valve SV1 SV2 pressure relief valve 0 0 ceeccccceseeececceeeeeeeaeeeeeeseeeeeeesseeeeeesseseeeessaeeeeeesaaeeeeeesageeeesaaees 60 4 5 Expansion vessel EXP 1 EXP2 shchosirnivenccncenresdcesahasencoaaadaatasieasepeannsewntavacyinesbinaennas uke daassuaavienguyed eronetaaiisowseescieart 61 AO Brine TOW SWVIEC IO TL gets ce celiac oecectene gece N Suse Pmeuesecsaacathe sos aetoeae enya aceon 62 4 7 BINE PUMO MSP sinasina reiner eire eti ini iaie kai Hence h aaar ni e erinin enaena tieira 63 AG WAGT PUMO MIP eee eee eee nee ee ee E eee eee EE 65 4 9 Plate type heat exchanger PHE1 PHE2 sisciissecaciesideseieaestnescanensvacay carson vacanvasandlenacahdestaVenabboiiaiisadwaiablacaniesanaauss 66
172. screws 1 that fix the water expansion vessel upper support 2 2 Lift the water expansion vessel 2 and tilt it to the left 3 Remove the water expansion vessel 2 from the water expansion vessel lower support 4 and put it aside 4 Loosen the nut 5 that fixes the flexible hose 5 Remove the water expansion vessel 3 6 Remove the seal 6 form the nut 5 Figure 42 Replacing the water expansion vessel 1 Screw 4 Water expansion vessel lower support 2 Water expansion vessel upper support 5 Nut 3 Water expansion vessel 6 Seal Installation CAUTION If damaged replace the seal 6 CAUTION If required adjust the pressure of the water expansion vessel 13 01 14 Version 1 0 9 DAIKIN Page 121 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures 1 Proceed in reverse order 2 Fill the water circuit refer to To fill the space heating circuit in the Daikin Altherma ground source heat pump Installer reference guide 3 Purge the water circuit refer to 9 3 Air purge function on the space heating circuit in the Daikin Altherma ground source heat pump Installer reference guide 2 2 15 Replacing the brine expansion vessel 2 2 15 1 Preliminary actions 1 Switch off the Daikin Altherma GSHP via the user interface 2 Remove the lower rear panel refer to Removing the lower rear panel on page 90 2 2 15 2 Procedure Removal 1 Loosen but do not
173. se category component electrical Expansion valve K1E incor Faulty suction R3T A9P e Check thermistors R3T If required replace thermistors rect control superheat too thermistor and R4T see page 57 R3T and R4T see page 141 low Faulty low pressure liquid e Check the expansion valve or replace expansion valve R4T A9P thermistor see page 71 see page 131 page 133 Faulty expansion valve control 13 01 14 Version 1 0 WDAIKIN Page 47 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 3 Symptom based troubleshooting 3 12 Tapping water related 3 12 1 High water pressure at tapping point Possible failures Root cause Corrective action Root cause category component mechanical Safety valve water side SV2 Component failure Check safety valve see If required replace safety blocked page 60 valve see page 108 Field installed pressure reduc Pressure reducing valve Check water system pressure Install or replace water pres ing valve problem to reduce pressure of the before and after the water sure reducing valve main water supply not pressure reducing valve installed Pressure reducing valve problem 3 12 2 Tapping water has white colour Possible failures Root cause Corrective action Root cause category installation Extreme formation of anode Water quality and composition Visual check for aluminiumhy Drain and flush the tank to residue of the water chlorides con droxi
174. se order Fill the water circuit refer to To fill the space heating circuit in the Daikin Altherma ground source heat pump Installer reference guide Purge the water circuit refer to 9 3 Air purge function on the space heating circuit in the Daikin Altherma ground source heat pump Installer reference guide Page 106 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures 2 2 9 Replacing the thermal protector backup heater 2 2 9 1 Preliminary actions 1 Switch off the Daikin Altherma GSHP via the user interface 2 Remove the front panel refer to Removing the front panel on page 83 3 Remove the switch box cover refer to Removing the switch box cover on page 87 2 2 9 2 Procedure Removal 1 Cut the tie wrap 1 that fixes the thermal protector backup heater capillary 2 to the chassis 2 Pull the thermal protector backup heater 3 out of the backup heater 7 3 Loosen and remove the 2 screws 4 that fix the thermal protector backup heater bracket 5 4 Loosen and remove the 2 screws 6 that fix the thermal protector backup heater 3 5 Remove the wiring from the wire terminals 8 of the thermal protector backup heater 3 6 Remove the thermal protector backup heater 3 while guiding the capillary 2 through the grommet 9 at the bottom of the pivoting power input section Figure 27 Replacing the thermal protector backup heater 1
175. section refer to Unlocking the pivoting power input section on page 88 5 Drain the water circuit refer to Draining the water circuit on page 85 13 01 14 Version 1 0 7 DAIKIN Page 113 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures 2 2 12 2 Procedure INFORMATION Note the position of the backup heater water pump pressure relief valve and the corrugated pipe After installation of the backup heater it must be possible to remove the thermal protector backup heater without removing the backup heater Removal 1 Unplug connectors X33A 1 and X85A 2 from the A1P PCB 3 2 Loosen and remove the 2 screws 4 that fix the fixation plate 5 3 Detach the right side of the fixation plate 5 4 Flip the fixation plate 5 Figure 33 Replacing the water pump 1 4 Screw 2 X85A 5 Fixation plate 3 A1 PCB 5 Unplug connector X25A 1 from the A1P PCB 2 6 Unplug connector X16A 3 from the A1P PCB 2 7 Loosen and remove the screw 4 that fixes the water pump ground wire 5 to the chassis 8 Guide the connectors through the grommet 6 9 Release the water pump wires 7 from the cable guide 8 10 Remove the water pump wires 7 from behind the switch box Page 114 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Figure 34 Replacing the water pump 2 5 Water pump ground wir
176. seeeseneeeeesuseeeseueeessaees 100 2 2 6 Replacing the water flow Sensor cccccsseccceeceeceeseecceeeeeceeseeessseecceececeuseeesauseeseuseeeseaseeeeeseeeessueeeesaaees 102 2 2 1 Replacing the brine pump ic niecsiscrccieonndindanecdacnantetnihatedadaudedadadsidsOdenadietietelsngeduenndaiatied sdmesiebadaiiaeseaderegucsalcteddodeeuanees 103 2 2 8 Replacing the backup heater cceccecccssccccsececeeeecseecceucecsueeesacesseeeesueesseeeseueesueessueessaeeessueeseusessueessaeees 104 2 2 9 Replacing the thermal protector backup heater 2 2 00 eeccceecccseeeceeeeeseeeeeeceseeeeeseeeeseeesseeeeseeeeeeeeeseeeeeaeeees 107 2 2 10 Replacing the water pressure relief valve 2 0 cccccccccceeccceeeeeeeeeceeeeseeeeeeeeeseeeeeseeeseeeeseeeeseeeseeeesseeeseaeees 108 2 2 11 Replacing the brine pressure relief valve cece cccccceececeeeeceeeeeeeeeeeeeeeseeeeeeeeeseeeesseeeseeeeseeeeeseeeeseeeesaeeess 111 2 2 12 Replacing the water PUMP ccccccececcceeececeeeeeeeeeeeeeeeseeeeeeeeesaeeeseeeeeaeeeseeeeeseeesseeeeseeeeseeeeeseeeeseeeseeeesaeeees 113 2 2 13 Replacing the compressor cccccccssecccsseccceeecsecceuscecueecseueesueeesueecsaeesseeesueessaeeesueeesaesessueeesauseseasesaneess 117 2 2 14 Replacing the water expansion vessel cccccecccceeccaeeeeceeeeeseeeeeeeeseeeeeseeeeseeeeseeeeseeeesaeeeseeeeeseeeeseeeesaeeess 121 2 2 15 Replacing the brine expansion vessel ccc ceecccceeeceee
177. sion 1 0 7 DAIKIN Page 101 Ground source heat pump ESIE13 03 Part 3 Repair 2 2 6 Replacing the water flow sensor 2 2 6 1 Preliminary actions 1 Switch off the Daikin Altherma GSHP via the user interface 2 Remove the front panel refer to Removing the front panel on page 83 3 Partially drain the water circuit refer to Draining the water circuit on page 85 2 2 6 2 Procedure Removal 1 Loosen the water flow sensor connector nut 2 2 Unplug the water flow sensor connector 3 3 Loosen the 2 nuts 4 that fix the water flow sensor 1 4 Remove the water flow sensor 1 5 Wipe off any spilled water Figure 23 Replacing the water flow sensor 1 Water flow sensor 4 Nut 2 Unit specific repair procedures 2 Water flow sensor connector nut 5 Arrow flow direction 3 Water flow sensor connector Installation INFORMATION The arrow 5 indicating the water flow direction must point to the LEFT 1 Proceed in reverse order 2 Fill the water circuit refer to To fill the space heating circuit in the Daikin Altherma ground source heat pump Installer reference guide 3 Purge the water circuit refer to 9 3 Air purge function on the space heating circuit in the Daikin Altherma ground source heat pump Installer reference guide Page 102 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures 2 2 Replacing
178. source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Figure 67 Replacing a temperature sensor 2 3 Sensor holder 2 Sensor Installation 1 Proceed in reverse order 2 2 25 Replacing temperature sensor R10T 2 2 25 1 Preliminary actions 1 Remove the front panel refer to Removing the front panel on page 83 2 Remove the switch box cover refer to Removing the switch box cover on page 87 3 Remove the inverter PCB refer to Procedure replacing the A10P PCB on page 95 2 2 25 2 Procedure Removal 1 Loosen and remove the 5 screws 1 that fix PCB A10P 3 to the frame 4 2 Loosen and remove the 2 screws 2 that fix the heatsink to the frame 4 3 Unplug connector X111A 6 on the A10P PCB 3 CAUTION A Removing the PCB A10P 3 from the frame 4 will expose the heat sink surface to which heat sink compound is applied Do not touch the heat sink Keep the heat sink compound clean to ensure good thermal contact after re installation 4 Press the latch 5 and remove the A10P PCB 3 from the frame 4 5 Put the PCB A10P 3 upside down on a clean surface 13 01 14 Version 1 0 7 DAIKIN Page 143 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Figure 68 Replacing temperature sensor R10T m PC09013 Bf No 007261 EST Sim eres Or nte iera re ad ogi ATE fxn a SORTS lt mK yore es SR x ret i TA a Ne Ca Giir N
179. step 1 C LWT add zone heating WD curve 25 C A 3 1 2 3 0 01 Set weather dependent heating Leaving water value for low ambient temp for R W 9 05 9 06 C step 1 C LWT add zone heating WD curve 60 C A 3 1 2 3 0 02 Set weather dependent heating High ambient temp for LWT add zone heating R W 10 20 C step 1 C WD curve 15 C A 3 1 2 3 0 03 Set weather dependent heating Low ambient temp for LWT add zone heating R W 20 5 C step 1 C WD curve 20 C L Operation range A 3 1 3 1 9 09 Delta T emitter Heating R W 3 10 C step 1 C 8 C L Room thermostat A 3 2 1 1 3 07 Room temp range Minimum temp heating R W 12 18 C step A 3 2 4 12 C A 3 2 1 2 3 06 Room temp range Maximum temp heating R W 18 30 C step A 3 2 4 30 C A 3 2 2 2 0A Room temp offset R W 5 5 C step 0 5 C 0 C A 3 2 3 2 09 Ext room sensor offset R W 5 5 C step 0 5 C 0 C A 3 2 4 Room temp step R W 0 1 C 1 0 5 C Maximum setpoint SP mode SP mode Weather dependant curve R W R W A 3 3 1 4 02 Space heating OFF temp R W 14 35 C step 1 C 35 C L Domestic hot water DHW _ Type A 4 1 6 0D R W 0 Reheat only 1 Reheat sched 2 Scheduled only L Setpoint readout A 4 3 1 Setpoint readout type R W 0 Temperature 1 Graphical A 4 3 2 1 Conversion persons 1 person R W 30 80 C step 1 C 42 C A 4 3 2 2 Conversio
180. t Reset The motor rotor does not rotate when the Unit will stop operating Via user interface compressor is energized Possible cause Corrective action Refrigerant circuit is clogged HP LP Check for possible blockage blockages gt 0 26 MPa can be checked by measuring the refriger ant pipe temperature Sudden drop in temperature could indicate a blockage remark this is not valid for the expansion valve Faulty compressor Check compressor See page 68 Replace compressor and also investigate reason of breakdown Check expansion valve operation liquid back issue Check refrigerant shortage overheated issue gt check for leak 2 11 E7 Brine flow error Trigger Brine flow is below 25 l min for 15 sec Unit will stop operating Via user interface onds when having low brine temp lt 0 C at start up the trigger timer can increase up to 60 seconds 13 01 14 Version 1 0 9 DAIKIN Page 23 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 2 Error code based troubleshooting Possible cause Check Corrective action Closed valve in brine circuit Check if all valves are open Adjust open valve Brine pressure is too low Check the brine pressure on the pressure Increase brine pressure till 2 bar Refer gauge PG1 to the Installer Reference Guide Check for possible brine leak Static pressure of brine circuit is too high Check the static pressure of the brine cir
181. tadepeautatousacesesacseumsees 36 3 1 Capacity shortage General cccccccccssseccccceeceecceeuececcceuceeecsueucececseaeeeessegeeeeceuucecessaseeeeesseausesessaeesessuageeeeeas 36 3 2 Capacity shortage Space heating cecccccsesccecccessececceeseececaeeecececeusececsueeeeecsuaececsseaueceessegseseeesseseeessseneeeenas 39 3 3 Capacity shortage Domestic hot water operation cccecccccceseeeeeeeeeeeeeeaeeeeeeeeaeeeeeeseeeeeseseeeeesseeeeeesaaeeeees 40 3 4 The system does not Start OPerate 20 ceccccccsececeeeseeeeeeeseeeeeeeaeeeeeeseeeeeeeeeeeeeeeseeeeeeesseeeeeessaeeesesaeseeeessaneeeeeas 41 3 5 Inaccurate temperature control for both domestic hot water and space heating operation cce 43 3 6 Water leakage or water release via the water pressure relieve valve ecccccccccecceeeeeeeeeeeeeeesaeeesaeeesaeeesseeeeas 44 SBIN NARA sitet eer econ E A E E EEA mun EE E net O E E taaheasanae 45 3 6 Power CONSUMPTION too NOM ssssaccnisnescsccaisneaiasiaiaecoagusanandataacuieeetianeacuasannnGaddan bagesdaagsandasansiuaiacseuasnanaianuaisonaianeness 45 3 9 Increased sound level brine PUMP 2 0 cece eeccccecccceeeeeeeeeneeeeceeeesaeeeeaeeeeae cease eeseeeeseeeeeaeeesaeeesseeeesseeeseeesneeseeeess 46 3 10 Increased sound level water PUMP ccccecccceccceeeeeeeeeeaeeeeseeeceeeeseeeeseeeeseeeeseeeeseeesseeeeseeeeseeeeseaeesseeesegeeseneess 47 3 11 Increased sound level COMPFESSON cccce
182. the existing copper piping when brazing the new compressor 9 Cut the compressor input pipe 1 from the front of the Daikin Altherma GSHP 10 Cut the compressor output pipe 2 from the rear of the Daikin Altherma GSHP 11 Loosen and remove the 3 screws 4 that fix the compressor 3 12 Remove the compressor 3 13 Braze the remains of the compressor piping Figure 41 Replacing the compressor 4 1 Compressor input pipe 3 Compressor 2 Compressor output pipe 4 Screw Installation CAUTION A When brazing the compressor use welding blankets and cooling clamps to protect the components that surround the compressor CAUTION A Observe the correct wiring of the compressor e U terminal RED e V terminal WHITE e W terminal BLUE Page 120 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures 1 Proceed in reverse order 2 Charge the refrigerant circuit refer to Refrigerant Handling on page 84 2 2 14 Replacing the water expansion vessel 2 2 14 1 Preliminary actions 1 Switch off the Daikin Altherma GSHP via the user interface 2 Open the sound insulation of the heat pump module front side refer to Opening the sound insulation of the heat pump module front side only on page 87 3 Drain the water circuit refer to Draining the water circuit on page 85 2 2 14 2 Procedure Removal 1 Loosen but do not remove the 2
183. the related root cause categories for each symptom are ranked The following ranking is used software control functions end user related parameter settings installation related component mechanical or electrical issues and system design related This ranking was obtained by a combination of checking speed and the probability of occurrence Overview of symptom based error situations Power consumption too high Increased sound level brine pump Increased sound level water pump Increased sound level compressor Tapping water related Compressor related Pump related User interface no or strange display Capacity shortage General Capacity shortage Space heating Capacity shortage Domestic hot water operation The system does not start operate Inaccurate temperature control for both domestic hot water and space heating operation Water leakage or water release via the water pressure relieve valve 3 1 Capacity shortage General Valid for both space heating and domestic hot water capacity shortage INFORMATION In case of unit capacity shortage a special capacity boost setting A 03 can be activated to increase the maximum compressor frequency from 148 Hz to 193 Hz unit capacity increase from 10 to 12 kW Possible failures Root cause Root cause category software control Compressor M1C frequency limited high discharge tem perature protection function active Compressor M1C frequency limited
184. the voltage on connector X28A pin 1 3 on PCB A1P if no 230 VAC is present check fuse FU1 on PCB A1P replace if blown replace PCB A1P Measure the voltage on connector X28A pin 2 and X20A pin 1 on PCB A1P if no 230 VAC is present replace PCBA1P Using a contact thermometer measure the temperature at the 3 way valve Domestic Hot Water exit and at the Space Heating exit the Domestic Hot Water exit must have the same temperature as the 3 way valve input the Space Heating exit must have a much lower temperature Activate Space Heating Measure the voltage on connector X28A pin 2 and X20A pin 5 on PCB A1P if no 230 VAC is present replace PCBA1P Using a contact thermometer measure the temperature at the 3 way valve Domestic Hot Water exit and at the Space Heating exit the Space Heating exit must have the same temperature as the 3 way valve input the Domestic Hot Water exit must have a much lower temperature If one or both checks above are not OK remove the 3 way valve motor from the 3 way valve Set the 3 way valve manually in the Domestic Hot Water position Using a contact thermometer measure the temperature at the 3 way valve Domestic Hot Water exit and at the Space Heating exit the Domestic Hot Water exit must have the same temperature as the 3 way valve input the Space Heating exit must have a much lower temperature Set the 3 way valve manually in the Space Heating position Using a contact thermometer measure the t
185. timize the waterflow through the high pressure side plate type heat exchanger Correct the refrigerant charge total charge 1 8 kg 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 3 Symptom based troubleshooting Possible failures Root cause Corrective action Compressor M1C frequency This protection control acti Activation of the protection Based on the diagnosis exe limited suction pipe super vates when suction superheat function can be caused by var cute one of the following heat protection function active is gt 10 C and expansion valve ious reasons therefore we actions is fully open 480 pulse Unit recommend to check the fol Correct the refrigerant returns to normal operation lowing charge total charge when suction superheat is e Check refrigerant charge 1 8 kg lt 4C e Check expansion valve for Replace expansion valve Remark check the suction correct operation see see page 131 page 133 superheat by measuring the page 71 and check or suction sensor R3T suction temperature with con suction sensor R3T see Remove detected tact thermometer before the page 57 blockages from the compressor and comparing Check the refrigerant refrigerant circuit with the saturated evaporation circuit for blockages temperature Root cause category end user Space heating or domestic hot water operation is not acti vated on the user interface
186. ting 1 Error codes Part 2 Troubleshooting This part contains the following chapters 1 Error codes 3 Symptom based troubleshooting 2 Error code based troubleshooting 4 Component checklist 1 Error codes 1 1 How to retrieve error codes When a 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 If an error is present it will immediately be displayed on the user interface screen In case of a warning the i symbol information will be blinking You can see the error code by pressing the i button Now you can read the error code and a short indication about the problem For more information about troubleshooting refer to Error code based troubleshooting on page 20 13 01 14 Version 1 0 DAIKIN Page 17 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 1 Error codes 1 2 How to reset error codes When the problem is solved you can reset the error by pushing the OK button unless otherwise mentioned on the screen INFORMATION For U3 error for example you need to be in installer mode to reset Error ol OO Leaving water temperature sensor problem Please contact your dealer Reset 1 3 History of error codes The user interface can remember up to 20 error codes They can be found on the following location 6 Information Sensor information Energy met
187. tly mounted Check the 3 way valve see page 78 9 DAIKIN Correct the position of the 3 way valve see page 123 and see page 126 Page 39 Ground source heat pump ESIE13 03 Part 2 Troubleshooting Possible failures Root cause Root cause category component electrical 3 way valve blocked Component failure Root cause category system design Water circuit requested capacity too high Incorrect system selection Water circuit water volume too big Long water piping Too small water piping Too long water piping Water circuit pressure drop too big Too many heating emitters Too many heating emitters 3 Symptom based troubleshooting Check the 3 way valve see page 78 Check required capacity by heat load calculation Refer to the capacity tables in the engi neering databook to know max system capacity at indi cated conditions Check required capacity by heat load calculation Refer to the capacity tables in the engi neering databook to know max system capacity at indi cated conditions Compare the pressure drop of the total system with the water pump characteristics refer to check of water pump Decreased water flow will cause a drop in capacity 3 3 Capacity shortage Domestic hot water operation INFORMATION domestic hot water which can lead to capacity shortage Possible failures Root cause Root cause category end user User set too lo
188. uilibrium temp R W 15 35 C step 1 C 0 C L System operation L Auto restart A 6 1 3 00 Is auto restart of the unit allowed R W 0 No 1 Yes 0 None A 6 2 2 A 6 4 A 6 5 D 05 1 0A 2 0B Forced pump OFF L Averaging time L Ext amb sensor offset L Forced defrost R W R W R W 0 Forced off 1 As normal 0 No averaging 1 12 hours 2 24 hours 3 48 hours 4 72 hours 5 5 C step 0 5 C 0 C This setting is not applicable for this unit Do not change the default value 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 5 Appendix 1 Field settings Field settings table Installer setting at variance with Field settings table Installer setting at variance with default value default value Breadcrumb Field code Setting name Range step Date Value Breadcrumb Field code Setting name Range step Date Value Default value Default value A 6 6 Are you sure you want to activate the forced defrost function R W A 8 4 07 Enable the second step of the backup
189. urce heat pump ESIE13 03 Part 2 Troubleshooting 2 Error code based troubleshooting 2 39 U3 00 Abnormal stop of underfloor heating dry out scheduled operation Trigger Effect Reset Screed dry out program was interrupted Unit will stop UFH dry out schedule Via user interface gt only possible in installer level Possible cause Check Corrective action User interface has been turned off Check user interface Restart screed dry out program Refer to the Installer Reference Guide Power failure Check power supply Restart screed dry out program Refer to the Installer Reference Guide 2 40 U4 Defective indoor outdoor transmission Trigger Effect Reset Hydro PCB detects abnormal transmis Unit will stop operation Auto reset sion to refrigerant brine PCB for a certain time Possible cause Check Corrective action Power supply is not OK gt imbalance Check power supply for voltage fluctua Voltage fluctuations should be less than gt 10 rated power supply 400 V tions gt 10 10 Wiring between refrigerant brine PCB Check the wiring refer to the wiring dia Correct the wiring A9P and hydro PCB A1P is not OK lt lt Faulty Faulty refrigerant brine PCB ASP Faulty refrigerant brine PCB ASP AQP pT Replace PCB AQP see page 94 Faulty hydro PCB A1P SS Replace PCB A1P see page 91 External factor e g electrical noise Check for source which could cause elec cause when e
190. user interface 2 Remove the front panel refer to Removing the front panel on page 83 3 Open the Sound Insulation Front Side Only refer to Opening the sound insulation of the heat pump module front side only on page 87 4 Power the Daikin Altherma GSHP 5 Activate Installer level on the user interface refer to Installer Level Settings on the user interface are available in the Installer Reference Guide paragraph To access the most used commands 6 Select Actuator test run A 7 4 in the user interface menu 7 Activate the brine pump A 7 4 1 8 Feel the pump body vibration to check pump functioning 9 The 3 speed indicators on the pump must be lit adjust the brine pump speed if required 10 If no pump vibrations can be observed 11 Check fuse F5U on A9P PCB replace if blown 12 Measure the voltage at X77A pin 1 3 on A9P PCB the voltage must be 230 VAC 10 if not replace A9P PCB 13 Measure the voltage at X28A pin 1 3 the voltage must be 230 VAC 10 if not replace A9P PCB 14 Check relay K6M When energized 230 VAC between pin 1 5 K6M pin 3 4 must be shorted 15 If no vibration can be felt and all checks above are OK replace the brine pump M3P refer to Replacing the brine pump on page 103 Page 64 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 4 Component checklist 4 8 Water pump M1P Technical specification Description The
191. vation of the brine freeze up protection con trol Root cause Ambient temperature higher than 35 C Several conditions possi ble to have brine freeze up protection control active in function of Tf setting A 04 Brine out temp R6T out lt Tf 3 5 K Brine in temp R5T out lt Tf 6 5 K Te lt Tf 3 5 K Te lt Tf 2 5 K for 30 seconds Te lt Tf 1 5 K for 2 minutes Te lowest value meas ured comparing following sensor R4Tout R3Tout R6 Tout Root cause category end user Space heating or domes tic hot water operation is not activated on the user interface Root cause category parameter setting Displayed date time is wrong schedules not cor rectly executed Displayed date time is wrong schedules not cor rectly executed Incorrect setting of unit control method setting C 07 Incorrect setting of user interface location user menu A 2 1 B Incorrect setting of space heating OFF temperature setting 4 02 Preferential kWh rate power supply settings and electrical connections do not match e Not set date time after initial startup e No power supply for more than 48 hours Daylight Saving Time not set correctly Incorrect setting of unit control method setting C 07 leaving water con trol room thermostat con trol ext room thermostat control Incorrect setting of user interface location user menu A 2 1 B at unit in room
192. ve Refrigerant filter 3 Way valve Drain valve tank DR4 High pressure sensor High pressure switch 4 Piping overview 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 5 Appendix 5 Thermistors 5 Thermistors Figure 77 Thermistors BRINE BRINE LEAVING ENTERING DOMESTIC DOMESTIC HOT WATER COLD WATER OUT IN WATER WATER LEAVING ENTERING space heating space heating Gee SA er won i l J h j reat na E g LO L Af p B j AAAI Legend 1 R4T IN Outlet water temperature sensor 6 R4T IN Inlet water temperature sensor 2 R2T IN BUH Temperature sensor 7 R4T OUT Two phase sensor 3 R2T OUT Discharge sensor 8 ROT IN DHW Tank temperature sensor 4 R3T IN Refrigerant liquid temperature sensor 9 ROT OUT Brine entering water 5 R3T OUT Suction sensor 10 R6T OUT Brine leaving water 13 01 14 Version 1 0 DAIKIN Page 163 Ground source heat pump ESIE13 03 Part 5 Appendix 5 Thermistors Page 164 DAIKIN 13 01 14 Version 1 0 In case a problem occurred on the unit which could not be resolved by using the content of this service manual or in case you have a problem which could be resolved but of which the manufacturer should be notified we advise you to contact your distributor To facilitate the investigation additional information is required Please fill out the following form before contacting your distributor Y DAIKIN FIELD INFORMA
193. w domestic hot water setpoint by schedule or manual operation Too low domestic hot water setpoint Domestic hot water not acti vated Root cause category parameter setting Setting domestic hot water operation mode 6 0D not set optimally Setting domestic hot water operation mode 6 0D is set to 2 scheduled only Root cause category installation 3 way valve does not switch correctly between space heat ing connection and domestic hot water connection 3 way valve incorrectly mounted Page 40 Check domestic hot water tank set temperature in combina tion with boiler volume and hot water usage Check setting 6 0D Check the 3 way valve see page 78 WDAIKIN Corrective action Replace the 3 way valve see page 123 and see page 126 Adapt system design Adapt system design Adapt system design Refer to Capacity shortage General on page 36 for an overview of the general causes both for space heating and Corrective action Adapt domestic hot water set point e g 50 55 C Remark check the weather dependent settings relation outdoor temperature set point in case weather dependent control is acti vated Check if domestic hot water heating is activated In case schedule only is used assure that the programmed schedule is inline with the tim ings hot water is required Adapt the schedules when necessary Correct the position of the 3 way valve see pa
194. wire is replaced together with the brine flow switch To facilitate the installation of new brine flow switch a pull line must be attached to the brine flow switch wire before removal Removal 1 Unplug connector X18A 1 from the A10P PCB 2 2 Attach a pull line 3 of approximately 2 meter to the brine flow switch wire 4 3 Loosen the nut 5 that fixes the brine flow switch 6 4 While guiding the pull line 3 through the grommet 7 pull the brine flow switch wire 4 until the pull line 3 surfaces at the bottom of the Daikin Altherma GSHP 5 Detach the pull line 3 from the brine flow switch wire 4 6 Remove the brine flow switch 6 Page 100 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Figure 22 Replacing the brine flow switch 1 Connector X18A 5 Nut 2 A10P PCB 6 Brine flow switch 3 Pull line 7 Grommet 4 Brine flow switch wire Installation CAUTION The brine flow switch paddle must be mounted vertically with the wire exiting at the bottom INFORMATION Use the pull line 3 to guide the brine flow switch wire 4 from the bottom of the Daikin Altherma GSHP through the grommet 7 next to connector X18A 1 on A10P PCB 2 1 Proceed in reverse order 2 Fill the brine circuit refer to To fill the brine circuit in the Daikin Altherma ground source heat pump Installer reference guide 13 01 14 Ver
195. y 2 1 10 1 Procedure 1 Switch off the Daikin Altherma GSHP via the user interface 2 Remove the front panel refer to Removing the front panel on page 83 3 Loosen and remove the 4 screws 1 that fix the bracket 2 4 Remove the bracket 2 5 Open the sound insulation 3 of the heat pump module by pulling the velcro strips 13 01 14 Version 1 0 7 DAIKIN Page 87 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Figure 10 Opening the sound insulation of the heat pump module 1 Screw 3 Sound insulation 2 Bracket 2 1 11 Unlocking the pivoting power input section 2 1 11 1 Procedure 1 Switch off the Daikin Altherma GSHP via the user interface 2 Remove the front panel refer to Removing the front panel on page 83 3 Loosen and remove the screw 1 that fixes the pivoting power input section 3 at the top 4 Loosen and remove the screw 2 that fixes the pivoting power input section 3 at the side Page 88 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures Figure 11 Unlocking the pivoting power input section a Oo J i m 5 so EEE 1 Screw 3 Pivoting power input section 2 Screw 13 01 14 Version 1 0 WDAIKIN Page 89 Ground source heat pump ESIE13 03 Part 3 Repair 2 Unit specific repair procedures 2 2 Parts replacement procedures Ov
196. y after power on Check power supply a Faulty expansion valve Check expansion valve see page 71 Replace expansion valve see page 131 page 133 Faulty thermistor R2T R3T R4T refriger Check thermistors R2T R3T R4T see Replace thermistors R2T R3T R4T see ant brine PCB A9P page 57 page 141 or PCB AQP see page 94 Faulty high pressure sensor refriger Check high pressure sensor see Replace the high pressure sensor see ant brine PCB AQP page 69 page 138 or PCB AQP see page 94 Wet operation Check for wet operation Wet operation In case wet operation was detected con can be detected by checking the suction firm the cause superheat If the suction superheat is 0 C Refrigerant overcharge then liquid refrigerant is returning to the compressor e Restricted brine flow e Faulty expansion valve External factor e g electrical noise Check for source which could cause elec cause when error is reset after power trical interference reset and error happens again after awhile Page 24 DAIKIN 13 01 14 Version 1 0 Ground source heat pump ESIE13 03 Part 2 Troubleshooting 2 Error code based troubleshooting 2 13 F3 Discharge pipe temperature control Trigger Effect 1 Discharge temperature gt 110 C for 15 Unit will stop operating Via user interface gt only possible when minutes below 95 C 2 Discharge temperature gt 125 C Possible cause Check Corrective act

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