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Daikin EBLA04E V Series, Service Manual, Page: 170 / 324

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Daikin EBLA04E V Series Service Manual Download Page 170

4

 | 

Components

Service manual

170

EBLA04~08E + EDLA04~08E

Daikin Altherma 3 M
ESIE22-09 – 2022.05

11

Again measure the resistance on the (disconnected) flow switch connector.

Result: 

The flow switch MUST be closed (0 Ω).

INFORMATION

When water flow is below flow switch trigger set point, switch MUST be open (OL).
When water flow is above flow switch trigger set point, switch MUST be closed (0 Ω).

Are flow switch measurements
correct?

Action

Yes

Flow switch is OK. Return to
troubleshooting of the specific error
and continue with the next procedure.

No

Replace the flow switch, see

"4.10.2 Repair procedures"

 [

4

 170].

4.10.2 Repair procedures

To remove the flow switch

Prerequisite: 

Stop the unit operation via the user interface.

Prerequisite: 

Turn OFF the respective circuit breaker.

Prerequisite: 

Remove the required plate work, see 

"4.16 Plate work"

 [

4

 202].

1

Drain the water circuit, see 

"5.3.2 Repair procedures"

 [

4

 269].

2

Unscrew the flow switch and remove it from the piping.

a

b

a

Flow switch

b

Piping

3

Disconnect the flow switch harness connector from the hydro PCB.

4

Cut all tie straps that fix the wiring harness.

5

Guide  the  flow  switch  harness  out  of  the  switch  box  and  remove  the  flow
switch.

6

To install the flow switch, see 

"4.10.2 Repair procedures"

 [

4

 170].

To install the flow switch

1

Install  (screw)  the  flow  switch  on  correct  location  on  the  piping  and  in  the
correct orientation (arrow pointing in the direction of the water flow). Ensure
that the O-ring is correctly installed and NOT damaged.

draft – 31/05/2022 15:53

Summary of Contents for EBLA04E V Series

Page 1: ...Service manual Daikin Altherma 3 M EBLA04E V EBLA06E V EBLA08E V EDLA04E V EDLA06E V EDLA08E V A B C Z 1 2 3 9 draft 31 05 2022 15 53...

Page 2: ...ts 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 Specific...

Page 3: ...Version log Service manual 3 EBLA04 08E EDLA04 08E Daikin Altherma 3 M ESIE22 09 2022 05 Version log Version code Description Date ESIE22 09 Document release May 2022 draft 31 05 2022 15 53...

Page 4: ...32 3 3 21 A1 00 Zero cross detection problem 32 3 3 22 A5 00 Outdoor unit High pressure peak cut freeze protection problem 33 3 3 23 AA 01 Backup heater overheated 34 3 3 24 AC 00 Booster heater overh...

Page 5: ...ted correctly 70 3 3 78 U4 00 Indoor outdoor unit communication problem 71 3 3 79 U5 00 User interface communication problem 72 3 3 80 U7 00 Outdoor unit Transmission malfunction between main microcom...

Page 6: ...4 15 1 Checking procedures 197 4 15 2 Repair procedures 199 4 16 Plate work 202 4 16 1 To remove the discharge grille 202 4 16 2 To open the outdoor unit 202 4 16 3 To remove the top plate 203 4 16 4...

Page 7: ...unit heat exchanger 275 6 2 To clean the integrated filter of the shut off valve 275 6 3 To check the pipe heaters 276 7 Technical data 280 7 1 Detailed information setting mode 280 7 1 1 Detailed inf...

Page 8: ...system in case of an emergency Name and address of fire department police and hospital Name address and day and night telephone numbers for obtaining service In Europe EN378 provides the necessary gu...

Page 9: ...main circuit capacitors or electrical components before servicing The voltage MUST be less than 50 V DC before you can touch electrical components For the location of the terminals see the wiring diag...

Page 10: ...or other substances Protect bystanders from injury and property from possible damage cause by service works WARNING If any work is to be conducted on the refrigerating equipment or any associated par...

Page 11: ...ent precautions in case of refrigerant leakage If refrigerant gas leaks ventilate the area immediately Possible risks Excessive refrigerant concentrations in a closed room can lead to oxygen deficienc...

Page 12: ...pipe surge absorber or telephone earth Incomplete earthing may cause electrical shock WARNING ONLY use copper wires Make sure the field wiring complies with the applicable legislation All field wiring...

Page 13: ...required prior to re use of recovered refrigerant It is essential that electrical power is available before the task is commenced Become familiar with the equipment and its operation Isolate system e...

Page 14: ...any associated electrical components are sealed to prevent ignition in the event of a refrigerant release Consult manufacturer if in doubt Do NOT overfill the refrigerant cylinder confirm with the su...

Page 15: ...ny objects or equipment on top of the unit Do NOT sit climb or stand on the unit 1 5 Notices NOTICE Make sure water quality complies with EU directive 2020 2184 Check the system for leaks after each r...

Page 16: ...nd optional domestic hot water preparation An air cooled heat exchanger with inverter controlled fan A refrigerant to water heat exchanger with PWM controlled pump Expansion valve 2 space heating conn...

Page 17: ...indoor installation ONLY Below list is only for reference for compatible units Always refer to the Engineering Databook for compatibility Stainless domestic hot water tank EKHWS U Polypropylene domes...

Page 18: ...ng description of the malfunction as follows 1 Press the left dial to open the main menu and go to Malfunctioning Result A short description of the error and the error code is displayed on the screen...

Page 19: ...See 5 3 Water circuit 4265 Possible cause Water flow is too low 4 Check the water pressure See 5 3 Water circuit 4265 Possible cause Water pressure is too low 5 Check if a by pass is installed in the...

Page 20: ...the water circuit 3 Check the water flow See 5 3 Water circuit 4265 Possible cause Water flow is too low 4 Check the water pressure See 5 3 Water circuit 4265 Possible cause Water pressure is too low...

Page 21: ...ircuit 3 Check the water flow See 5 3 Water circuit 4265 Possible cause Water flow is too low 4 Check the water pressure See 5 3 Water circuit 4265 Possible cause Water pressure is too low 5 Check if...

Page 22: ...it 4265 Possible cause Water flow is too low 4 Check the water pressure See 5 3 Water circuit 4265 Possible cause Water pressure is too low 5 Check if a by pass is installed in the water circuit See 5...

Page 23: ...N As long as the water pump de blocking routine is active the error code will be displayed on the user interface INFORMATION If all procedures listed above have been performed and the problem is still...

Page 24: ...ll present contact the helpdesk 3 3 8 81 00 Outlet water thermistor abnormality Trigger Effect Reset Outlet water thermistor input is out of range Unit will stop operating Automatic reset To solve the...

Page 25: ...ermistor input is out of range Unit will stop operating Automatic reset To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Perform a check of the outlet...

Page 26: ...Refrigerant circuit 4256 Possible cause Refrigerant overcharge 7 Check if the refrigerant circuit is clogged See 5 2 Refrigerant circuit 4256 Possible cause Clogged refrigerant circuit 8 Check for th...

Page 27: ...is recommended to perform the checks in the listed order 1 Perform a check of the outlet water after heat exchanger thermistor See 4 19 Thermistors 4217 Possible cause Faulty outlet water after heat...

Page 28: ...256 Possible cause Refrigerant overcharge or shortage 6 Check if the refrigerant circuit is clogged See 5 2 Refrigerant circuit 4256 Possible cause Clogged refrigerant circuit 7 Check for the presence...

Page 29: ...use Clogged refrigerant circuit 6 Check for the presence of non condensables and or humidity in the refrigerant circuit See 5 2 Refrigerant circuit 4256 Possible cause Non condensables and or humidity...

Page 30: ...too high temperature during space heating without electrical heater Unit will stop operating Manual reset via user interface To solve the error code INFORMATION It is recommended to perform the check...

Page 31: ...of the 3 way valve of the bizone kit See documentation of the bizone kit Possible cause Faulty 3 way valve 5 Perform a check of the bizone kit PCB See documentation of the bizone kit Possible cause Fa...

Page 32: ...4 Possible cause Faulty water temperature setting 3 Perform a check of the 3 way valve See 4 1 3 way valve 499 Possible cause Faulty 3 way valve 4 Perform a check of the operation of the Aquastat See...

Page 33: ...op valves of the water circuit are open See 5 3 Water circuit 4265 Possible cause Closed stop valve in the water circuit 4 Purge the water circuit See 5 3 Water circuit 4265 Possible cause Air in the...

Page 34: ...ow is too low 3 Purge the water circuit See 5 3 Water circuit 4265 Possible cause Air in the water circuit 4 Check the water circuit for an external heat source See 5 3 Water circuit 4265 Possible cau...

Page 35: ...ontact the helpdesk 3 3 25 AH 00 Tank disinfection function not completed correctly Trigger Effect Reset Disinfection setpoint is NOT reached within 6 hours or NOT kept for the required time Unit will...

Page 36: ...ly MUST be within range of nominal operating voltage 4 Power drop Short circuit 3 Perform a check of the hydro PCB See 4 12 Hydro PCB 4175 Possible cause Faulty hydro PCB 4 Perform a check of the 3 wa...

Page 37: ...rnal pump See 5 3 Water circuit 4265 Possible cause The detected water flow is caused by an external pump 5 Perform an electrical check of the water flow sensor See 4 21 Water flow sensor 4237 Possibl...

Page 38: ...ch when pump is not running Unit will stop operating Manual reset via user interface To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Check the water p...

Page 39: ...ve been performed and the problem is still present contact the helpdesk 3 3 31 C5 00 Heat exchanger thermistor abnormality Trigger Effect Reset Refrigerant heat exchanger temperature is out of range U...

Page 40: ...the user interface remote controller See documentation of the user interface remote controller for more information Possible cause Faulty room thermistor 2 Check the communication wiring between the r...

Page 41: ...ION Confirm the rectifier voltage is below 10 V DC before proceeding see To prevent electrical hazards 4254 6 Check that the thermal interface grease is applied properly on the PCB or refrigerant pipi...

Page 42: ...valve in the refrigerant circuit 2 Perform a check of the refrigerant pressure sensor See 4 18 Refrigerant pressure sensor 4212 Possible cause Faulty refrigerant pressure sensor 3 Perform a check of...

Page 43: ...Faulty refrigerant pressure sensor 2 Perform a check of the high pressure switch See 4 11 High pressure switch 4171 Possible cause Faulty high pressure switch 3 Perform a check of the main PCB See 4 1...

Page 44: ...See 5 2 Refrigerant circuit 4256 Possible cause Refrigerant shortage 4 Check for the presence of humidity in the refrigerant circuit See 5 2 Refrigerant circuit 4256 Possible cause Humidity in the re...

Page 45: ...n motor 4 Perform a check of the compressor See 4 7 Compressor 4148 Possible cause Faulty compressor or miswiring of the compressor power supply cable 5 Perform a check of the expansion valve See 4 9...

Page 46: ...cuit is clogged See 5 2 Refrigerant circuit 4256 Possible cause Clogged refrigerant circuit 4 Check if the refrigerant circuit is correctly charged See 5 2 Refrigerant circuit 4256 Possible cause Refr...

Page 47: ...ause Faulty main PCB INFORMATION If all procedures listed above have been performed and the problem is still present contact the helpdesk 3 3 41 E8 00 Outdoor unit Power input overvoltage Trigger Effe...

Page 48: ...See 4 19 Thermistors 4217 Possible cause Faulty refrigerant side thermistor s 2 Perform a check of the expansion valve See 4 9 Expansion valve 4162 Possible cause Faulty expansion valve 3 Check that...

Page 49: ...ve 2 Perform a check of the main PCB See 4 14 Main PCB 4184 Possible cause Faulty main PCB 3 Perform a check of the room thermistor Measure the room temperature and compare to the room temperature sho...

Page 50: ...ended to perform the checks in the listed order 1 Check the water circuit for an external heat source See 5 3 Water circuit 4265 Possible cause Increased water temperature due to an external heat sour...

Page 51: ...igerant circuit is correctly charged See 5 2 Refrigerant circuit 4256 Possible cause Refrigerant overcharge or shortage 3 Check for the presence of non condensables and or humidity in the refrigerant...

Page 52: ...cause Faulty expansion valve 5 Perform a check of the main PCB See 4 14 Main PCB 4184 Possible cause Faulty main PCB 6 Check if the refrigerant circuit is correctly charged See 5 2 Refrigerant circui...

Page 53: ...rform a check of the expansion valve See 4 9 Expansion valve 4162 Possible cause Faulty expansion valve 7 Perform a check of the main PCB See 4 14 Main PCB 4184 Possible cause Faulty main PCB 8 Check...

Page 54: ...eding see To prevent electrical hazards 4254 4 Check that the thermal interface grease is applied properly on the PCB or refrigerant piping contact surface of the heat sink Adjust if needed Possible c...

Page 55: ...the power supply is compliant with the regulations See 5 1 Electrical circuit 4254 Possible cause Faulty or disturbance of the power supply power supply MUST be within range of nominal operating volt...

Page 56: ...PCB INFORMATION If all procedures listed above have been performed and the problem is still present contact the helpdesk 3 3 53 H6 00 Outdoor unit Malfunction of position detection sensor Trigger Effe...

Page 57: ...and the problem is still present contact the helpdesk 3 3 54 H8 00 Outdoor unit Malfunction of compressor input system Trigger Effect Reset DC voltage or current sensor abnormality based on the compr...

Page 58: ...nt contact the helpdesk 3 3 56 HC 00 Tank temperature sensor problem Trigger Effect Reset Domestic hot water tank thermistor input is out of range Unit will NOT stop operating Automatic reset when res...

Page 59: ...performed and the problem is still present contact the helpdesk 3 3 58 J3 00 Outdoor unit Malfunction of discharge pipe thermistor Trigger Effect Reset Discharge pipe thermistor input is out of range...

Page 60: ...cts an abnormal value open or short circuit Unit will stop operating Automatic reset To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Perform a check o...

Page 61: ...nsor input is out of range Unit will stop operating Manual reset via user interface To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Perform a check of...

Page 62: ...igh Unit will stop operating Manual reset via remote controller To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Perform a check of the main PCB See 4...

Page 63: ...Perform a check of the main PCB See 4 14 Main PCB 4184 Possible cause Faulty main PCB Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker 4...

Page 64: ...le cause Faulty main PCB 6 Perform a check of the compressor See 4 7 Compressor 4148 Possible cause Faulty compressor or miswiring of the compressor power supply cable 7 Check if the power supply is c...

Page 65: ...or shortage 4 Check for the presence of non condensables and or humidity in the refrigerant circuit See 5 2 Refrigerant circuit 4256 Possible cause Non condensables and or humidity in the refrigerant...

Page 66: ...Possible cause Refrigerant overcharge or shortage 7 Check for the presence of non condensables and or humidity in the refrigerant circuit See 5 2 Refrigerant circuit 4256 Possible cause Non condensab...

Page 67: ...supply MUST be within range of nominal operating voltage 4 Power drop Short circuit INFORMATION If all procedures listed above have been performed and the problem is still present contact the helpdesk...

Page 68: ...operating Manual reset via user interface Power supply reset To solve the error code 1 Perform a check of the main PCB See 4 14 Main PCB 4184 Possible cause Faulty main PCB INFORMATION If all procedur...

Page 69: ...the expansion valve See 4 9 Expansion valve 4162 Possible cause Faulty expansion valve 9 Check for leaks in the refrigerant circuit Look for oil traces on the unit s Check the brazing points on the fi...

Page 70: ...hin range of nominal operating voltage 4 Power drop Short circuit 2 Perform a check of the compressor See 4 7 Compressor 4148 Possible cause Faulty compressor or miswiring of the compressor power supp...

Page 71: ...m the checks in the listed order 1 Check if the power supply is compliant with the regulations See 5 1 Electrical circuit 4254 Possible cause Faulty or disturbance of the power supply power supply MUS...

Page 72: ...ng Automatic reset To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Perform a check of the hydro PCB See 4 12 Hydro PCB 4175 Possible cause Faulty hydr...

Page 73: ...resent contact the helpdesk 3 3 81 U8 02 Connection with room thermostat lost Trigger Effect Reset Communication abnormality between unit and room thermostat after connection was already made Unit wil...

Page 74: ...Automatic reset To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Check if the power supply is compliant with the regulations See 5 1 Electrical circuit...

Page 75: ...at MUST be FAT 32 CAUTION Always safely remove and eject media INFORMATION If all procedures listed above have been performed and the problem is still present contact the helpdesk 3 3 84 U8 05 File ma...

Page 76: ...ty wiring between the unit and the bizone kit box INFORMATION If all procedures listed above have been performed and the problem is still present contact the helpdesk 3 3 86 U8 07 P1 P2 communication...

Page 77: ...n the malfunction Update software of the user interface NO manual reset possible To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Check the software an...

Page 78: ...hecks in the listed order 1 Check the wiring between the hydro PCB and the main PCB See 5 1 Electrical circuit 4254 Possible cause Faulty wiring between the hydro PCB and main PCB 2 Perform a check of...

Page 79: ...Effect Reset Reversed piping or bad communication wiring detection Unit will NOT start operating Manual reset via user interface To solve the error code INFORMATION It is recommended to perform the ch...

Page 80: ...heck if hydro PCB is replaced or reset Reset measurements of field supplied electrical meters and reset user interface and hydro PCB to factory settings Unit operates in emergency mode Backup heater i...

Page 81: ...ration Root cause category software control Possible failure Root cause Check Repair Unexpected water pump behaviour Water pump software control Water pump start stop conditions During space heating c...

Page 82: ...residue Water quality and composition of the water chlorides conductivity can lead to accelerated reduction of the anode in the tank and aluminiumhydroxides will be formed on the bottom of the tank R...

Page 83: ...too high or too low Adjust contrast Blocked screen Mismatch between software and EEPROM on user interface Power reset and user interface reset 3 4 5 Symptom Leak Root cause category installation Possi...

Page 84: ...sor does NOT start because water loop temperature is too low Special software control activated Water loop temperature is too low causing ONLY the backup heater to operate Compressor will start when w...

Page 85: ...pressure sensor Check high pressure side plate type heat exchanger for good water flow and heat exchange Check the refrigerant charge Based on the diagnosis execute one of the following actions Repla...

Page 86: ...mperature measured than actual Deviation of thermistor higher temperature measured than actual Check discharge pipe thermistor Replace discharge pipe thermistor or main PCB Heat sink inverter thermist...

Page 87: ...drain holes Snow on the outdoor unit Ice building up on the casing Ice is NOT in direct contact with fins Unclog drain holes or remove any scraps that can be used for ice to build up Remove ice Defro...

Page 88: ...t water operation mode 6 0D NOT set optimally Setting domestic hot water operation mode 6 0D is set to 2 scheduled ONLY Check setting 6 0D In case schedule is ONLY used assure that the programmed sche...

Page 89: ...ction function can be caused by various reasons therefore we recommend to check the following Check refrigerant pressure sensor Check high pressure side plate type heat exchanger for good water flow a...

Page 90: ...nterface Set schedule according to user reference guide Holiday setting active Holiday setting is activated in the user interface Check holiday settings Set holiday settings correctly Backup heater op...

Page 91: ...nsor higher pressure measured than actual Deviation of refrigerant pressure sensor higher value measured than actual Check refrigerant pressure sensor Replace refrigerant pressure sensor Discharge pip...

Page 92: ...heck if space heating cooling is activated Root cause category parameter setting Possible failure Root cause Check Repair External room thermostat used with setting C 07 on value 2 RT control Wrong se...

Page 93: ...teristics See check of water pump Decreased water flow will cause a drop in capacity Adapt system design 3 4 12 Symptom Inaccurate temperature control Root cause category parameter setting Possible fa...

Page 94: ...ble failure Root cause Check Repair Outlet water mixed zone thermistor deviation causes incorrect temperature control of the mixed zone low temperature Deviation of thermistor lower temperature measur...

Page 95: ...0D pump operation Check pump operation mode setting F 0D Change setting F 0D from continuous operation value 0 to Sample 1 or Request 2 See installer reference guide for applicable value Setting disin...

Page 96: ...apacity by heat load calculation See the capacity tables in the engineering data book to know max system capacity at indicated conditions Adapt system design 3 4 14 Symptom System does not start or op...

Page 97: ...e than 48 hours Set date time according to operation manual instructions Set date time according to operation manual instructions Displayed date time is wrong schedules NOT correctly executed Daylight...

Page 98: ...outdoor unit PCB in case power supply is OK but led is NOT blinking or in case of PCB not operating correctly Reactor coil broken Component problem Check continuity of the reactor coil Replace the re...

Page 99: ...mediate position put the 3 way valve switch in domestic hot water or space heating position Is the problem solved Action Yes No further actions required No Perform an electrical check of the 3 way val...

Page 100: ...and 5 Result The measured resistance MUST be 0 Is the resistance for both measurements on connector X20A correct Action Yes Relay KVR is switching correctly Correct the wiring between X20A X17A and X...

Page 101: ...e are correct Action Yes Component is OK Return to the troubleshooting of the specific error and continue with the next step No Perform a position check of the 3 way valve manual procedure see 4 1 1 C...

Page 102: ...ature Domestic hot water Much lower than the 3 way valve inlet Space heating Same as the 3 way valve inlet Both temperature checks performed above are correct Action Yes Install a new 3 way valve moto...

Page 103: ...lve motor see 4 1 2 Repair procedures 4102 To remove the 3 way valve body Prerequisite Remove the 3 way valve motor see 4 1 2 Repair procedures 4102 Prerequisite Drain water from the piping to which t...

Page 104: ...hange this position 1 The 3 way valve can be installed in accordance with one of the following four configurations 1 2 3 1 3 2 1 2 3 1 3 2 E3 E1 E2 E4 1 Water inlet 2 Domestic hot water exit 3 Space h...

Page 105: ...E1 and E2 Position of the jumper in case of installation according to configurations E3 and E4 4 Install the 3 way valve motor on the 3 way valve body 5 Tighten the screw to fix the 3 way valve motor...

Page 106: ...t if needed Is the problem solved Action Yes No further actions required No Return to the troubleshooting of the specific error and continue with the next procedure To install the 3 way valve motor CA...

Page 107: ...change the rotation direction of the valve DIR 2P Y N L Position of the jumper in case of installation according to configurations E1 and E2 Position of the jumper in case of installation according t...

Page 108: ...ing of the specific error and continue with the next procedure 4 2 4 way valve 4 2 1 Checking procedures INFORMATION It is recommended to perform the checks in the listed order To perform a mechanical...

Page 109: ...AND UNIT CAN SWITCH BETWEEN HEATING AND COOLING INFORMATION This procedure is ONLY possible when the outdoor temperature is within the temperature range for both Heating and Cooling operation mode See...

Page 110: ...g mode 0 V DC when operating in Heating mode INFORMATION Actual energize voltage is 310 V DC 12 V DC is used to keep the coil energized Is the measured voltage correct Action Yes Perform a position ch...

Page 111: ...e 7 3 Piping diagram 4297 INFORMATION The flow through the 4 way valve is correct if the water temperature after the heat exchanger rises drops when operating in Heating Cooling mode Is the flow corre...

Page 112: ...e corresponds with the flow shown in the flow diagram of the specific operation mode See 7 3 Piping diagram 4297 INFORMATION The flow through the 4 way valve is correct if the water temperature after...

Page 113: ...erating in Defrost mode Wait for the unit to switch to Heating service monitoring tool mode and again perform the electrical check and position check Heating mode There is a possibility to put the uni...

Page 114: ...261 1 Remove the 4 way valve coil from the 4 way valve body see 4 2 2 Repair procedures 4113 2 Remove and keep the putty if installed and the insulation if installed for re use 3 Supply nitrogen to th...

Page 115: ...ect location and correctly oriented Insert the pipe ends in the pipe expansions 4 Supply nitrogen to the refrigerant circuit The nitrogen pressure MUST NOT exceed 0 02 MPa 5 Wrap a wet rag around the...

Page 116: ...location and do NOT apply force as this may damage the connector or connector pins of the PCB 5 Fix the 4 way valve coil harness using new tie straps Is the problem solved Action Yes No further actio...

Page 117: ...eck continuity see 7 2 Wiring diagram 4281 Is the measured backup heater resistance correct Action Yes Return to Checking procedures 4116 of the backup heater and continue with the next procedure No R...

Page 118: ...the backup heater thermal protector functions correctly Reset if it has tripped See 4 4 Backup heater thermal protector 4134 1 Turn ON the power of the unit INFORMATION If the circuit breaker or the...

Page 119: ...the power supply source of the backup heater Is the power supply source of the backup heater correct Action Yes Correct the wiring and or components between the power supply source and the backup hea...

Page 120: ...C when the contacts should be closed 0 V AC when the contacts should be open Is the measured operating voltage of the backup heater contactor correct Action Yes Replace the specific backup heater cont...

Page 121: ...or sensor b Air purge valve c Clip upper backup heater pipe d Clip backup heater coupling e Upper backup heater coupling f Backup heater g Bracket 6 Remove the clip from the upper backup heater coupli...

Page 122: ...the backup heater 1 Install the backup heater in the correct location on the bracket Make sure the backup heater pipes are correctly installed in the bracket cutouts NOTICE Check the condition of the...

Page 123: ...p upper backup heater pipe d Clip backup heater coupling e Upper backup heater coupling f Backup heater g Bracket INFORMATION Make sure that the back up heater pipe is fully inserted in the back up he...

Page 124: ...269 Is the problem solved Action Yes No further actions required No Return to Checking procedures 4116 of the backup heater and continue with the next procedure To remove the backup heater contactor s...

Page 125: ...ce Prerequisite Turn OFF the respective circuit breaker 1 Remove the required plate work see 4 16 Plate work 4202 a a a a Backup heater contactor 2 Measure the backup heater resistance as shown in the...

Page 126: ...egger 2 Set the Megger voltage to 500 V AC 3 Connect the Megger ground test lead directly to the backup heater ground wire CAUTION Do NOT connect the Megger ground test lead to any other ground wire 4...

Page 127: ...ct procedure 3 Go to Actuator test run via the user interface 4 Activate backup heater step 1 5 Activate backup heater step 2 6 Check the status in the Actuators menu of the user interface This MUST b...

Page 128: ...230 V AC 10 Is the measured power supply voltage correct Action Yes Skip the next step No Continue with the next step 2 Check the power supply source of the backup heater Is the power supply source o...

Page 129: ...backup heater K2M 2 4 1 3 4 6 3 5 2 6 1 5 K5M 2 4 1 3 4 6 3 5 2 6 1 5 All measured voltages MUST be 400 V AC 10 contact closed K5M 2 14 1 13 The measured voltage MUST be 230 V AC 10 contact closed IN...

Page 130: ...4130 No Check for the reason of faulty operating voltage broken wiring faulty contact see 7 2 Wiring diagram 4281 Problem solved After all checking procedures listed above have been performed Is the p...

Page 131: ...move the pipe from the pipe clamp to improve manoeuvrability of the backup heater 7 Separate the upper backup heater coupling INFORMATION Make sure that the O ring stays in place 8 Remove the backup h...

Page 132: ...Cut all tie straps that fix the backup heater wiring 15 Remove the backup heater from the unit 16 To install the backup heater see Repair procedures 4130 To install the backup heater 1 Install the bac...

Page 133: ...Clip d Upper backup heater coupling e Backup heater 5 Install and tighten the screw on the pipe clamp 6 Route the backup heater wiring and ground wire towards the switch box and through the grommet in...

Page 134: ...ntactor terminals 2 Remove the screws and remove the backup heater contactors from the switch box 3 To install the backup heater contactors see Repair procedures 4130 To install the backup heater cont...

Page 135: ...G SCALDING Does the backup heater thermal protector trip at correct temperature Action Yes Perform an electrical check of the backup heater thermal protector see Checking procedures 4134 No Replace th...

Page 136: ...e 4 16 Plate work 4202 1 Disconnect the backup heater thermal protector wires from the wire terminal X7M 5 6 2 Guide the wires through the grommet in the switch box 3 Cut all tie straps that fix the b...

Page 137: ...tie straps Is the problem solved Action Yes No further actions required No Return to the troubleshooting of the specific error and continue with the next procedure 4 4 2 Backup heater kit Checking pr...

Page 138: ...oximately 90 C Does the backup heater thermal protector trip at the correct temperature Action Yes Perform an electrical check of the backup heater thermal protector see Checking procedures 4137 No Re...

Page 139: ...contacts MUST be closed Are all contacts closed Action Yes Backup heater thermal protector is OK Return to the troubleshooting of the specific error and continue with the next procedure No Replace th...

Page 140: ...or 5 Loosen and remove the 2 screws that fix the backup heater thermal protector to the bracket 6 Disconnect the wires from the backup heater thermal protector terminals 7 Remove the backup heater the...

Page 141: ...nect the wires to the wire terminals at the back of the backup heater thermal protector 4 Install the backup heater thermal protector on the bracket Install and tighten the 2 screws 5 Install the back...

Page 142: ...rk see 4 16 Plate work 4202 a a Booster heater contactor K3M 2 Measure the booster heater resistance between K3M 1 and K3M 3 Result The measured resistance MUST be approximately 18 INFORMATION See the...

Page 143: ...es Return to 4 5 1 Checking procedures 4142 of the booster heater and continue with the next procedure No Replace the booster heater see 4 5 2 Repair procedures 4146 To perform an electrical check of...

Page 144: ...ing terminals of the booster heater contactor K3M 2 4 The measured voltages MUST be 230 V AC 10 Is the measured power supply voltage correct Action Yes Skip the next step No Continue with the next ste...

Page 145: ...K3M 1 3 The measured voltages MUST be 0 V AC contacts open Are the measured voltages of the booster heater contactor correct contacts open Action Yes Return to 4 5 1 Checking procedures 4142 of the b...

Page 146: ...edure see the installation manual of the water tank Is the problem solved Action Yes No further actions required No Return to the troubleshooting of the specific error and continue with the next proce...

Page 147: ...rocedure see the installation manual of the water tank Does the booster heater thermal protector trip at 80 90 C Action Yes Perform an electrical check of the booster heater thermal protector see 4 6...

Page 148: ...or insulation 2 Turn ON the power using the respective circuit breaker 3 Start the unit operation via the user interface 4 Wait for or create condition to operate the compressor 5 Listen to the compre...

Page 149: ...ent electrical hazards 4254 2 Visually check For oil drops around the compressor Locate and fix as needed Pipes for signs of damage Replace pipes as needed 3 Check that the compressor bolts are correc...

Page 150: ...ifier voltage is below 10 V DC before proceeding see To prevent electrical hazards 4254 2 Remove the cover of the compressor wire terminals a a Compressor wire terminals cover 3 Disconnect the Faston...

Page 151: ...7 2 Repair procedures 4153 5 Measure the continuity of the U V and W wires between the compressor and the PCB If no continuity correct as needed see 7 2 Wiring diagram 4281 6 Connect the Faston connec...

Page 152: ...see 4 7 2 Repair procedures 4153 To perform an insulation check of the compressor Prerequisite First perform an electrical check of the compressor see 4 7 1 Checking procedures 4148 Prerequisite Stop...

Page 153: ...e compressor see 4 7 2 Repair procedures 4153 4 7 2 Repair procedures To remove the compressor Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit...

Page 154: ...nnection during installation V U W U Wire terminal U V Wire terminal V W Wire terminal W 4 Remove the compressor thermal protector see To remove the compressor thermal protector 4160 5 Supply nitrogen...

Page 155: ...brazing point s of the component pipe s using an oxygen acetylene torch 8 Remove the nuts and bolts and remove the compressor from the unit a a a b c c c a Nut b Compressor c Damper 9 Remove the 3 dam...

Page 156: ...remove the caps from the compressor pipes as late as possible 5 Install the compressor on the correct location on the dampers Properly insert the refrigerant pipes in the pipe expansions of the compr...

Page 157: ...oy the compressor 9 After soldering is done stop the nitrogen supply after the component has cooled down 10 Install the compressor thermal protector see To install the compressor thermal protector 416...

Page 158: ...Action Yes No further actions required No Return to the troubleshooting of the specific error and continue with the next procedure 4 8 Compressor thermal protector 4 8 1 Checking procedures To perfor...

Page 159: ...nnectors from the compressor thermal protection INFORMATION Make sure that the wiring between the compressor thermal protector and the connector on the PCB is properly connected and NOT damaged check...

Page 160: ...the next procedure No Replace the compressor thermal protector see 4 8 2 Repair procedures 4160 4 8 2 Repair procedures To remove the compressor thermal protector Prerequisite Stop the unit operation...

Page 161: ...ressor thermal protector and the compressor thermal protector bracket a b a Compressor thermal protector b Compressor thermal protector bracket 5 To install the compressor thermal protector see 4 7 2...

Page 162: ...l protector in the compressor housing 4 Install the wire terminals cover on the compressor a a Compressor wire terminals cover 5 Install the compressor insulation Is the problem solved Action Yes No f...

Page 163: ...close open the expansion valve Listen to check if the valve is closing opening and manually close the valve when check is done INFORMATION After the check remove the magnet from the expansion valve b...

Page 164: ...the measurements should be short circuit WARNING When reconnecting a connector to the PCB make sure to connect it on the correct location and do NOT apply force as this may damage the connector or con...

Page 165: ...form a check of the appropriate thermistors and pressure sensors as their measurements control the operation of the expansion valve s 7 While in opening or closing sequence each expansion valve windin...

Page 166: ...Pull up the expansion valve coil to remove it from the expansion valve body INFORMATION It may be needed to turn the expansion valve coil 1 8 turn counter clockwise to unlock it Make sure to note the...

Page 167: ...sure to remove the remaining component pipe end s from the refrigerant pipes by heating the brazing point s of the component pipe s using an oxygen acetylene torch 8 Install plugs or caps on the open...

Page 168: ...a pressure test see 5 2 1 Checking procedures 4256 11 Add refrigerant to the refrigerant circuit see 5 2 2 Repair procedures 4261 To install the expansion valve coil with bracket 1 Install the expans...

Page 169: ...e Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 4 16 Plate work 4202 1 Check that the flow switch is correctly installed The arrow MUST point in the direction...

Page 170: ...erequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 4 16 Plate work 4202 1 Drain the water ci...

Page 171: ...e if equipped of the water circuit towards the expansion vessel CAUTION Make sure to open the valve if equipped towards the expansion vessel otherwise the overpressure will be generated 6 Open the sto...

Page 172: ...diagram 4281 4 Measure the resistance between the Faston connections of the high pressure switch Result The switch MUST be closed 5 Fill the refrigerant circuit with nitrogen until pressurized just a...

Page 173: ...gerant from the refrigerant circuit see 5 2 2 Repair procedures 4261 1 If needed remove any parts to create more space for the removal of the high pressure switch 2 Remove the compressor insulation se...

Page 174: ...e refrigerant circuit The nitrogen pressure MUST NOT exceed 0 02 MPa 4 Wrap a wet rag around the high pressure switch and any other components near the high pressure switch and solder the high pressur...

Page 175: ...ure the voltage on the connectors X1A 1 3 and X19A 1 3 on the hydro PCB Result The measured voltage MUST be 230 V AC a b a Connector X1A b Connector X19A Is the measured voltage on the hydro PCB corre...

Page 176: ...dures 4175 of the hydro PCB and continue with the next procedure No Replace the hydro PCB see 4 12 2 Repair procedures 4178 To check if the correct spare part is installed Prerequisite First perform a...

Page 177: ...responds with the wiring diagram see 7 2 Wiring diagram 4281 INFORMATION Correct the wiring as needed Is the problem solved Action Yes No further actions required No Return to 4 12 1 Checking procedur...

Page 178: ...e required plate work see 4 16 Plate work 4202 2 Make sure that all wires are firmly and correctly connected see 7 2 Wiring diagram 4281 3 Check the continuity of all wires 4 Replace any damaged or br...

Page 179: ...dro PCB 4 Remove the hydro PCB from the switch box 5 To install the hydro PCB see 4 12 2 Repair procedures 4178 To install the hydro PCB 1 Install the hydro PCB in the correct location in the switch b...

Page 180: ...ecking procedures 4175 of the hydro PCB and continue with the next procedure To remove a fuse of the hydro PCB Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the res...

Page 181: ...the listed order To perform a functionality check of the LAN adapter PCB Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite...

Page 182: ...rced OFF Smart Grid operation mode LED OFF system running in the Normal operation Smart Grid operation mode or operating in normal operation conditions space heating cooling production of domestic hot...

Page 183: ...the wiring diagram see 7 2 Wiring diagram 4281 4 Check the continuity of the P1 P2 communication wires between the LAN adapter PCB and the unit or user interface PCB see 7 2 Wiring diagram 4281 INFOR...

Page 184: ...s required No Return to 4 13 1 Checking procedures 4181 of the LAN adapter PCB and continue with the next procedure 4 14 Main PCB 4 14 1 Checking procedures INFORMATION It is recommended to perform th...

Page 185: ...and remove the 3 screws that fix the switch box to the unit INFORMATION The 2 screws at the hydro box side are reachable using a small ratchet inch and socket nr 8 or wrench inch with a cardan joint...

Page 186: ...l see 7 2 Wiring diagram 4281 No Adjust the power supply to the unit see 5 1 2 Repair procedures 4256 To check the HAP LED of the main PCB Prerequisite First check the power supply to the main PCB see...

Page 187: ...ocedures 4193 To check the wiring of the main PCB Prerequisite First perform all earlier main PCB checks see 4 14 1 Checking procedures 4184 Prerequisite Stop the unit operation via the user interface...

Page 188: ...eturn to 4 14 1 Checking procedures 4184 of the main PCB and continue with the next procedure To check the rectifier voltage of the main PCB Prerequisite First perform all earlier main PCB checks see...

Page 189: ...es 4193 To perform a diode module check 1 First check the rectifier voltage of the main PCB see 4 14 1 Checking procedures 4184 INFORMATION If the rectifier voltage is OK the diode module is OK If rec...

Page 190: ...5 If the diode module is NOT OK replace the main PCB see 4 14 2 Repair procedures 4193 To perform a power module check Prerequisite First check the rectifier voltage of the main PCB see 4 14 1 Checkin...

Page 191: ...remove the protective varnish with the test leads of the multi meter VDC Com Ref VDC Com Ref U DC 0 4 V DC U O L V DC 0 4 V DC V O L W DC 0 4 V DC W O L DC U 0 4 V U DC O L DC V 0 4 V V DC O L DC W 0...

Page 192: ...0 45 V DC W O L DC U 0 45 V U DC O L DC V 0 45 V V DC O L DC W 0 45 V W DC O L Are the test results OK Action Yes Power modules are OK Return to 4 14 1 Checking procedures 4184 of the main PCB and con...

Page 193: ...fix the switch box to the unit INFORMATION The 2 screws at the hydro box side are reachable using a small ratchet inch and socket nr 8 or wrench inch with a cardan joint a a a b a Screw b Switch box...

Page 194: ...for power supply wiring from the switch box unplug fixation plug 8 Remove the screw and remove the ground wiring from the switch box 9 Remove the 2 screws and separate the main PCB mounting plate from...

Page 195: ...5037158 to the PCB contact surface of the heat sink Distribute the grease as evenly as possible CAUTION ALWAYS apply new grease on the PCB heat sink NOT doing so may cause the PCB to fail due to insu...

Page 196: ...y wiring to the main power supply terminal X1M 7 Connect the red wire to the terminal X2M 8 Fix the ferrite core s for power supply wiring to the switch box fixation plug 9 Connect all other connector...

Page 197: ...embly Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 4 16 Plate work 4202 1 If propell...

Page 198: ...bly 1 First perform a mechanical check of the DC fan motor assembly see 4 15 1 Checking procedures 4197 INFORMATION Check the DC fan motor power supply voltage circuit on the PCB 2 Turn ON the power o...

Page 199: ...ain PCB see 4 14 1 Checking procedures 4184 No Replace the DC fan motor see 4 15 2 Repair procedures 4199 Problem solved After all checking procedures listed above have been performed Is the problem s...

Page 200: ...Disconnect the DC fan motor connector from the main PCB a f e e b b c d a DC fan motor connector b DC fan motor harness c Tie strap d Switch box e Screw f DC fan motor assy 3 Unlock the ferrite bead i...

Page 201: ...itch box 5 Install a new tie strap to fix the DC fan motor harness to the switch box 6 Connect the DC fan motor connector to the connector on the main PCB 7 Lock the ferrite bead if applicable 8 Insta...

Page 202: ...e grille Prerequisite Stop the unit operation via the user interface 1 Turn OFF the respective circuit breaker DANGER RISK OF ELECTROCUTION Wait for at least 10 minutes after the circuit breaker has b...

Page 203: ...SK OF ELECTROCUTION Wait for at least 10 minutes after the circuit breaker has been turned OFF to be sure the rectifier voltage is below 10 V DC before proceeding 2 Loosen and remove the screws that f...

Page 204: ...the screws that fix the front plate a a a a a a a a a b a Screw b Front plate 4 Remove the front plate 4 16 5 To rotate the switch box During the installation you will need access to the inside of th...

Page 205: ...sound insulation INFORMATION This procedure is just an example and may differ on some details for your actual unit Prerequisite Remove the front plate see 4 16 Plate work 4202 1 Untwist the cord and r...

Page 206: ...equisite Remove the required plate work see 4 16 Plate work 4202 1 Loosen and remove the 3 screws that fix the switch box to the unit INFORMATION The 2 screws at the hydro box side are reachable using...

Page 207: ...le clamp thermistor harness d Cable clamp 4 way valve harness e Fan motor assembly harness f Main PCB g Compressor harness connector 6 Remove the cable clamps tie straps from the expansion valve harne...

Page 208: ...und wire 4 Connect the compressor harness connector a b c c d e f g a Drip proof cover b Cable clamp expansion valve harness c Cable clamp thermistor harness d Cable clamp 4 way valve harness e Fan mo...

Page 209: ...s 8 Install and tighten the 3 screws to fix the switch box to the unit INFORMATION The 2 screws at the hydro box side are reachable using a small ratchet inch and socket nr 8 or wrench inch with a car...

Page 210: ...To prevent electrical hazards 4254 2 Visually check the reactor for any damage or burnt out components If any damage is found replace the reactor see 4 17 2 Repair procedures 4212 3 Check that the re...

Page 211: ...ng point f Measuring point g Measuring point h Measuring point i Measuring point Is the resistance measurement correct Action Yes Proceed with the next step No Replace the reactor see 4 17 2 Repair pr...

Page 212: ...the main PCB replace the complete main PCB See 4 14 Main PCB 4184 4 18 Refrigerant pressure sensor 4 18 1 Checking procedures To perform an electrical check of the refrigerant pressure sensor Prerequ...

Page 213: ...0 0 5 1 1 5 2 2 5 3 3 5 4 4 5 5 a b a Detected pressure MPa b Output voltage V V DC Detected pressure MPa 0 5 0 01 0 6 0 15 0 7 0 29 0 8 0 42 0 9 0 56 1 0 0 70 1 1 0 84 1 2 0 98 1 3 1 11 1 4 1 25 1 5...

Page 214: ...and the connector on the PCB is properly connected and NOT damaged check continuity see 7 2 Wiring diagram 4281 The measured voltage is inside the expected range Action Yes Refrigerant pressure sensor...

Page 215: ...the removal 1 Cut all tie straps that fix the refrigerant pressure sensor harness 2 Disconnect the refrigerant pressure sensor connector from the connector X6Y 3 Supply nitrogen to the refrigerant cir...

Page 216: ...ensor and any other components near the pressure sensor and solder the refrigerant pressure sensor pipe to the refrigerant pipe b a a Refrigerant pressure sensor b Refrigerant pressure sensor pipe CAU...

Page 217: ...the thermistor correctly installed thermal contact between the thermistor and the piping Action Yes Perform an electrical check of the specific thermistor see Checking procedures 4217 No Correctly in...

Page 218: ...46 71 72 73 74 75 76 77 78 79 3 32 3 21 3 11 3 01 2 91 2 82 2 72 2 64 2 55 10 111 99 20 25 01 50 7 18 80 2 47 9 8 7 6 5 4 3 2 1 106 03 100 41 95 14 90 17 85 49 81 08 76 93 73 01 69 32 21 22 23 24 25...

Page 219: ...ure using the thermistor table A Resistance at 23 C 21 85 k Resistance at 24 C 20 90 k Disconnect connector and measure resistance between S90 pin 1 2 Measured resistance 21 80 k Measured resistance v...

Page 220: ...unit air ambient thermistor Remove the thermistor from the heat exchanger grille recess Remove the protection tube For refrigerant piping thermistors Cut the tie straps that fix the insulation and th...

Page 221: ...nnector Remove all other thermistors wired to the connector from their thermistor holder Disconnect the thermistor connector Remove the complete set of thermistors 5 To install the thermistor see Repa...

Page 222: ...stall all other thermistors wired to the connector in their thermistor holder Route the thermistor harness of all thermistors towards the appropriate PCB or intermediate connector Connect the thermist...

Page 223: ...mistor correctly installed Action Yes Perform an electrical check of the specific thermistor see Checking procedures 4223 No Correctly install the thermistor see Repair procedures 4227 To perform an e...

Page 224: ...domestic hot water tank B Outlet water thermistor Bizone R1T Bizone Bizone kit C 4 Determine the thermistor resistance that matches the measured temperature Thermistor Table A T C k T C k T C k T C k...

Page 225: ...23 4 08 3 94 3 81 3 68 3 56 Thermistor Table B T C k T C k T C k T C k 0 5 10 15 20 25 30 35 806 5 618 9 478 8 373 1 292 9 231 4 184 1 147 4 40 45 50 55 60 65 70 75 118 7 96 13 78 29 64 1 52 76 43 63...

Page 226: ...ct on the user interface display replace the applicable PCB INFORMATION See the overview of the thermistors at the start of the procedure and the 7 2 Wiring diagram 4281 to determine if the specific t...

Page 227: ...ee 7 2 Wiring diagram 4281 No Replace the specific thermistor see Repair procedures 4227 Repair procedures To remove the thermistor Prerequisite Stop the unit operation via the user interface Prerequi...

Page 228: ...to determine if the specific thermistor is either Directly connected to the PCB Connected to an intermediate connector which is connected to the PCB 6 If connected to an intermediate connector discon...

Page 229: ...B 4 If connected to an intermediate connector connect the thermistor connector to the intermediate connector If directly connected to the PCB connect the thermistor connector to the appropriate PCB WA...

Page 230: ...l check of the thermistor see Checking procedures 4229 1 Locate the thermistor INFORMATION Remove the thermistor from its holder if not reachable with a contact thermometer 2 Measure the temperature u...

Page 231: ...e thermistor 6 Check that the measured resistance value matches the resistance determined through the measured temperature earlier step in the procedure E g R6T thermistor Measured temperature with co...

Page 232: ...measured resistance of the thermistor match with the temperature determined resistance Action Yes Correct the wiring between the wiring terminal on the unit and the thermistor connector on the PCB se...

Page 233: ...5 6 41 6 65 6 41 6 18 5 95 5 74 5 14 0 65 84 30 16 10 60 4 87 1 2 3 4 5 6 7 8 9 62 54 59 43 56 49 53 71 51 09 48 61 46 26 44 05 41 95 31 32 33 34 35 36 37 38 39 15 43 14 79 14 18 13 59 13 04 12 51 12...

Page 234: ...eded for more details Is the problem solved Action Yes No further actions required No Return to the troubleshooting of the specific error and continue with the next procedure 4 20 User interface 4 20...

Page 235: ...on changes with voltage Polarizer defect Scratch dirt particle bubble on polarizer or between polarizer and glass Dot defect The pixel appears bright or dark abnormally Functional defect No display ab...

Page 236: ...es Return to the troubleshooting of the specific error and continue with the next procedure No Re install the software with the Updater Tool see 4 20 2 Repair procedures 4236 To check the communicatio...

Page 237: ...mydaikin eu for more information about the Updater Tool Is the problem solved Action Yes No further actions required No Return to the troubleshooting of the specific error and continue with the next p...

Page 238: ...he specific error and continue with the next procedure No Continue with the next step 10 Unplug the water flow sensor connector X34A and measure the voltage power supply between pins 1 2 on hydro PCB...

Page 239: ...traps Is the problem solved Action Yes No further actions required No Return to the troubleshooting of the specific error and continue with the next procedure To remove the water flow sensor Prerequis...

Page 240: ...et pipe Ensure that the O ring does NOT get damaged 5 Slide the clip over the connection until it snaps into place 6 Connect the water flow sensor harness to the water flow sensor 7 Tighten the water...

Page 241: ...rk see 4 16 Plate work 4202 1 Turn ON the power of the unit 2 Read the water pressure on the home screen of the user interface Result The pressure MUST be 1 2 bar 3 Measure the water pressure using a...

Page 242: ...ed water pressure INFORMATION In most cases the user interface allows to monitor the water pressure If the measured output voltage value matches the voltage determined through the measured water press...

Page 243: ...11 Disconnect the connector from the water pressure sensor and the connector X7Y and measure the continuity of the wiring harness Is continuity of the wiring harness correct Action Yes Replace the wat...

Page 244: ...ration via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 4 16 Plate work 4202 1 Drain water from the water circuit see 5 3 2 R...

Page 245: ...rated 5 Open the stop valves and add water to the water circuit if needed see 5 3 2 Repair procedures 4269 6 Purge the water circuit see 5 3 2 Repair procedure 4269 Is the problem solved Action Yes No...

Page 246: ...cts that may block the water pump Any impurities or objects found Action Yes Remove the impurities or objects that may block the water pump see 4 23 2 Repair procedures 4248 No Replace the water pump...

Page 247: ...next step s and continue with the measurement of the PWM signal No Continue with the next step 11 Unplug the water pump connector X16A and measure the voltage between pins 3 5 on the hydro PCB The me...

Page 248: ...gnal duty cycle Is the measured PWM signal correct Action Yes Replace the water pump see 4 23 2 Repair procedures 4248 No Continue with the next step 15 Unplug the water pump connector X25A and measur...

Page 249: ...te Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 4 16 Plate work 4202 1 Disconnect the connectors from the water pump motor a d a b b c a Connector b Bolt c W...

Page 250: ...mp motor Is the problem solved Action Yes No further actions required No Return to 4 23 1 Checking procedures 4245 of the water pump and continue with the next procedure To remove the water pump Prere...

Page 251: ...uts that fix the water pump to the water circuit pipes CAUTION Use a counterforce when unscrewing or tightening the nuts to make sure NOT to damage the piping 4 Remove the water pump 5 To install the...

Page 252: ...ser interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 4 16 Plate work 4202 1 Disconnect the appropriate connector power supply connector an...

Page 253: ...ce manual 253 EBLA04 08E EDLA04 08E Daikin Altherma 3 M ESIE22 09 2022 05 Is the problem solved Action No Return to the troubleshooting of the specific error and continue with the next procedure draft...

Page 254: ...ween L and N on the power supply terminal X1M Result The voltage MUST be 230 V AC 10 5 Unbalance between the phases MUST NOT exceed 2 Is the measured voltage power supply correct Action Yes Return to...

Page 255: ...RISK OF ELECTROCUTION Confirm the rectifier voltage is below 10 V DC before proceeding To check the wiring between the outdoor unit and domestic hot water tank 1 Check that all wires are properly conn...

Page 256: ...user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 4 16 Plate work 4202 1 Make sure that all wires are firmly and correctly connected s...

Page 257: ...the system to run at a more or less stable condition 4 On the refrigerant liquid piping between the refrigerant water heat exchanger and the outdoor unit heat exchanger coil using a contact thermomet...

Page 258: ...is conducted to cause insufficient cooling capacity 2 The superheated degree of suction gas lowers or the wet operation is performed Consequently the compressor consumes more power and is noisy before...

Page 259: ...gas rises Consequently the electronic expansion valve turns open more than normal or completely open for average output 3 Low pressure drops to cause the unit not to reach cooling capacity or heating...

Page 260: ...ant until correctly charged see 5 2 2 Repair procedures 4261 To check for non condensables in the refrigerant circuit Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF...

Page 261: ...late work 4202 1 Remove the caps a b a Liquid stop valve b Gas stop valve 2 Completely open the stop valves by screwing the stop valve screw counterclockwise Is the problem solved Action Yes No furthe...

Page 262: ...cuum pump b Connect flexible hose to service port c To recovery pump L Low pressure H High pressure V Vacuum R Refrigerant 3 To add refrigerant see 5 2 2 Repair procedures 4261 Is the problem solved A...

Page 263: ...ding to the available service ports Use related field setting where necessary to open expansion valve solenoid valve To perform refrigerant pump down operation The unit is equipped with an automatic p...

Page 264: ...t that is well maintained the ambient conditions at which the vacuum is done MUST be considered If there is moisture in the refrigerant and the ambient temperature is lower the vacuum pressure that MU...

Page 265: ...the specific error and continue with the next procedure To check the water pressure 1 Turn ON the power of the unit INFORMATION Make sure that the water pressure sensor is functioning correctly 2 Read...

Page 266: ...tep 6 Check the water pressure see 5 3 1 Checking procedures 4265 Is the water pressure correct Action Yes Return to the troubleshooting of the specific error and continue with the next procedure No A...

Page 267: ...next procedure No Install the specific air purge valve s on the correct location s in the water circuit see 5 3 2 Repair procedures 4269 To check if a by pass is installed in the water circuit 1 A by...

Page 268: ...that all field piping is done according to the good practice and installer reference guide Correct piping diameters Piping distance limits are followed NO pipes are squeezed NO short radius bends 2 Tu...

Page 269: ...the water pump of the unit is off See the specific dealer manual of the external pump for this procedure a a b c d a External pump b By pass c Underfloor heating circuit e Radiators circuit 2 If impos...

Page 270: ...ctive circuit breaker Prerequisite Remove the required plate work see 4 16 Plate work 4202 1 To fill the water circuit use a field supply filling kit Make sure you comply with the applicable legislati...

Page 271: ...No further actions required No Return to the troubleshooting of the specific error and continue with the next procedure To install the field installed air purge valves on the highest points of the wa...

Page 272: ...he unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker 1 Install a by pass in the water circuit outside the installation as shown below b c a d e a By pass b Und...

Page 273: ...n to be within the expected range 1 bar Is the problem solved Action Yes No further actions required No Return to the troubleshooting of the specific error and continue with the next procedure 5 4 Man...

Page 274: ...n the unit may NOT operate or may NOT deliver the required capacity Is the outdoor temperature within the operating range Action Yes Return to the troubleshooting of the specific error and continue wi...

Page 275: ...raighten the hair fins 2 Clear the outdoor unit heat exchanger from dust leaves using a fin comb or compressed air N2 CAUTION Avoid bending or damaging the hair fins of the outdoor unit heat exchanger...

Page 276: ...7 Open the shut off valve 8 Make sure that the air purge valves are in the open position Is the problem solved Action Yes No further actions required No Return to the troubleshooting of the specific e...

Page 277: ...Maintenance Service manual 277 EBLA04 08E EDLA04 08E Daikin Altherma 3 M ESIE22 09 2022 05 c a c d e d e b A A EBLA04 08E2V3 EDLA04 08E2V3 units a E6H b E9H c E10H d E11H e E12H draft 31 05 2022 15 5...

Page 278: ...Maintenance Service manual 278 EBLA04 08E EDLA04 08E Daikin Altherma 3 M ESIE22 09 2022 05 c a c d e d e b A A EBLA04 08E23V3 EDLA04 08E23V3 units a E6H b E9H c E10H d E11H e E12H draft 31 05 2022 15...

Page 279: ...bimetal thermostat ON T 4 C OFF T 9 C E10H Expansion vessel flex Tape heater Hydro A1P X24A 5 6 X7M 1 2 Own bimetal thermostat ON T 4 C OFF T 9 C E11H Water inlet Tape heater Hydro A1P X2A X28A X7M 3...

Page 280: ...Detailed information setting mode 7 1 1 Detailed information setting mode Outdoor unit See the installer reference guide on business portal for more information 7 1 2 Detailed information setting mod...

Page 281: ...on 1 Connection diagram 1 Connection diagram Outdoor Outdoor Hydro Hydro module 2 Notes 2 Notes Connection X1M Main terminal Earth wiring Field supply Option Wiring depending on model Switch box PCB P...

Page 282: ...switch S2 80 Connector SA1 Surge arrestor SHM Terminal strip fixed plate U V W Connector V3 V4 V401 Varistor X A Connector X M Terminal strip Y1E Electronic expansion valve Y1S Solenoid valve 4 way va...

Page 283: ...ro SWB power supplied from compressor SWB Hydro switch box power supplied from compressor switch box Normal kWh rate power supply Normal kWh rate power supply SWB Switch box Use normal kWh rate power...

Page 284: ...p heater F2B Overcurrent fuse booster heater F1U F2U A4P Fuse 5 A 250 V for digital I O PCB K1A K2A High voltage Smart Grid relay K1M Contactor backup heater K3M Contactor booster heater K R A4P Relay...

Page 285: ...strip Smart Grid power supply X X A X Y Connector X M Terminal strip Z C Noise filter ferrite core 5 Option PCBs 5 Option PCBs Alarm output Alarm output Changeover to ext heat source Changeover to ext...

Page 286: ...al kWh rate power supply contact 16 V DC detection voltage supplied by PCB Preferential kWh rate power supply contact 16 V DC detection voltage supplied by PCB Remote user interface Remote user interf...

Page 287: ...ter power supply X5M Terminal field wiring for DC X9M Terminal integrated backup heater power supply X10M Terminal Smart Grid Earth wiring Field supply 1 Several wiring possibilities Option Wiring dep...

Page 288: ...Daikin Altherma 3 M ESIE22 09 2022 05 English Translation X6M Terminal strip power supply at client side X9M Terminal strip integrated backup heater power supply X10M Terminal high voltage Smart Grid...

Page 289: ...al 2 core Flow switch signal 2 core 2 core 2 core 2 core 2 core 3 core R2T External sensor oor or ambient Only for KRTETS WLAN cartridge Optional part for EWA EWYA signal 2 core 3m included A14P P1 P2...

Page 290: ...herma 3 M ESIE22 09 2022 05 Compressor module INFORMATION The diagrams shown in this manual may be incorrect due to changes updates to the unit Correct diagrams are supplied with the unit and can also...

Page 291: ...ltherma 3 M ESIE22 09 2022 05 Hydro module INFORMATION The diagrams shown in this manual may be incorrect due to changes updates to the unit Correct diagrams are supplied with the unit and can also be...

Page 292: ...aikin Altherma 3 M ESIE22 09 2022 05 INFORMATION The diagrams shown in this manual may be incorrect due to changes updates to the unit Correct diagrams are supplied with the unit and can also be found...

Page 293: ...aikin Altherma 3 M ESIE22 09 2022 05 INFORMATION The diagrams shown in this manual may be incorrect due to changes updates to the unit Correct diagrams are supplied with the unit and can also be found...

Page 294: ...e technical data book 4D139355 Remote controller INFORMATION The diagrams shown in this manual may be incorrect due to changes updates to the unit Correct diagrams are supplied with the unit and can a...

Page 295: ...UHCB6W1 Hydro SWB 1 Connection diagram 1N 230V 3kW or 6kW 3N 400V 6kW or 9kW K5M K1M K2M 12 12 2 3 4 5 1 X3M 2 3 4 3 2 1 F1T F1T F1T E1H E1H E1H F1T F1T F1T E2H E2H E2H PE Q3DI 4 3 6 5 2 1 4 3 6 5 2 1...

Page 296: ...IE22 09 2022 05 INFORMATION The diagrams shown in this manual may be incorrect due to changes updates to the unit Correct diagrams are supplied with the unit and can also be found in the technical dat...

Page 297: ...s hydro module b Drain valve water circuit R1T Outlet water heat exchanger c Expansion vessel R3T Refrigerant liquid side d Flow sensor R4T Inlet water e Plate heat exchanger f Backup heater Thermisto...

Page 298: ...valve water circuit R1T Outlet water heat exchanger c Expansion vessel R3T Refrigerant liquid side d Flow sensor R4T Inlet water e Plate heat exchanger f Automatic air purge valve Thermistors compress...

Page 299: ...backup heater thermistor R2T d Main PCB A1P r Backup heater e Booster heater contactor K3M s Outlet water after plate type heat exchanger thermistor R1T f Hydro module t Refrigerant liquid thermistor...

Page 300: ...Air thermistor R1T i Main PCB A1P b Heat exchanger j High pressure switch S1PH c Expansion valve Y1E k Discharge pipe thermistor R3T d Heat exchanger thermistor R2T l Liquid receiver e Accumulator m C...

Page 301: ...sor module o Outlet water after plate type heat exchanger thermistor R1T d Main PCB A1P p Refrigerant liquid thermistor R3T e Booster heater contactor K3M q Water pump f Hydro module r Water outlet g...

Page 302: ...Air thermistor R1T i Main PCB A1P b Heat exchanger j High pressure switch S1PH c Expansion valve Y1E k Discharge pipe thermistor R3T d Heat exchanger thermistor R2T l Liquid receiver e Accumulator m C...

Page 303: ...a b c d h j e f g a Backup heater contactor K2M g Backup heater thermal protector Q1L b Terminal strip X14M h Automatic air purge valve c Backup heater contactor K1M i Switch box d Backup heater conta...

Page 304: ...7 Technical data Service manual 304 EBLA04 08E EDLA04 08E Daikin Altherma 3 M ESIE22 09 2022 05 7 5 Field information report See next page draft 31 05 2022 15 53...

Page 305: ...onal information is required Please fill out the following form before contacting your distributor FIELD INFORMATION REPORT Key person information Name Company name Your contact details Phone number E...

Page 306: ...sion hydro PCB A1P Software version hydro PCB A5P Software version user interface Software version outdoor PCB Minimum water volume Maximum water volume Brine composition and mixture Brine freeze up t...

Page 307: ...e Daikin Business Portal authentication required 2 Go to the tab After sales support on the left navigation pane and select Technical support 3 Click the button Service tools An overview of the availa...

Page 308: ...7 Technical data Service manual 308 EBLA04 08E EDLA04 08E Daikin Altherma 3 M ESIE22 09 2022 05 7 7 Field settings See next page draft 31 05 2022 15 53...

Page 309: ...table Applicable indoor units EBLA04E23V3 EDLA04E23V3 EBLA06E23V3 EDLA06E23V3 EBLA08E23V3 EDLA08E23V3 EBLA04E2V3 EDLA04E2V3 EBLA06E2V3 EDLA06E2V3 EBLA08E2V3 EDLA08E2V3 Notes 1 EBLA 2 EDLA 3 23V3 4 2V3...

Page 310: ...R O 2 0C 2 2 0C 2 37 70 step 1 C 65 C 2 0C 2 37 55 step 1 C 55 C 2 8 3 9 03 R W 5 18 C step 1 C 5 C 2 8 4 9 02 R W 18 22 C step 1 C 22 C Main zone 2 9 C 07 R W 0 Leaving water 1 External room thermost...

Page 311: ...2 2 contacts Delta T 3 B 1 1 0C 2 0D 2 R W 2 0D 2 R O 2 0D 2 Radiator 3 10 C step 1 C 5 C 2 0D 2 Radiator 10 C 3 B 2 1 0E R W 3 10 C step 1 C 5 C Additional zone 3 C R O 0 2 points 1 Slope Offset Spa...

Page 312: ...C 80 C E 07 7 40 60 C step 1 C 60 C E 07 8 40 75 C step 1 C 75 C 5 9 6 00 R W 2 40 C step 1 C 8 C 5 A 6 08 R W 2 20 C step 1 C 10 C 5 B R W 0 Fixed 1 Weather dependent WD curve 5 C 0 0B R W 35 6 0E C...

Page 313: ...her dependent 9 1 5 4 R W 0 No 1 Yes 9 1 5 5 R W 0 2 points 1 Slope Offset 9 1 6 1 00 R W 40 5 C step 1 C 10 C 9 1 6 1 01 R W 10 25 C step 1 C 15 C 9 1 6 1 02 R W 9 01 9 00 step 1 C 2 0C 0 35 C 2 0C 1...

Page 314: ...ump 1 Instant hot water 2 Disinfection 3 Circulation 4 Circulation and disinfection 9 2 4 D 07 R W 0 No 1 Yes DHW Back up heater 9 3 1 E 03 R O 3 R W 4 0 No heater 4 1 External heater 2 3V 3 9 3 2 5 0...

Page 315: ...nsumption control 9 9 1 4 08 R W 0 No 1 Continuous 2 Inputs 3 Current Sensor 9 9 2 4 09 R W 0 Amp 1 kW 9 9 3 5 05 R W 0 50 A step 1 A 50 A 9 9 4 5 05 R W 0 50 A step 1 A 50 A 9 9 5 5 06 R W 0 50 A ste...

Page 316: ...C 55 C 9 I 0 0C R W Min 45 6 0E 6 0E C step 1 C 60 C 9 I 0 0D R W 10 25 C step 1 C 15 C 9 I 0 0E R W 40 5 C step 1 C 10 C 9 I 1 00 R W 40 5 C step 1 C 10 C 9 I 1 01 R W 10 25 C step 1 C 15 C 9 I 1 02...

Page 317: ...C 9 I 3 09 R W 15 25 C step 0 5 1 C 15 C Leaving water value for high ambient temp for LWT main zone heating WD curve Weather dependent cooling of the main leaving water temperature zone Weather depe...

Page 318: ...9 I 6 09 0 9 I 6 0A R W 30 6 0E C step 1 C 60 C 9 I 6 0B R W 30 min 50 6 0E C step 1 C 45 C 9 I 6 0C R W 30 min 50 6 0E C step 1 C 45 C 9 I 6 0D R W 0 Reheat only 1 Schedule reheat 2 Schedule only Wha...

Page 319: ...C step 0 5 C 23 C Booster heater delay timer Additional running time for the maximum running time Domestic hot water booster heater hysteresis How many leaving water temperature zones are there Boiler...

Page 320: ...kWh 6 100 pulse kWh PV meter 7 1000 pulse kWh PV meter 9 I D 0A 2 9 I D 0B 2 9 I D 0C 0 9 I D 0D 0 9 I D 0E 0 9 I E 00 R O 0 5 2 Monobloc 9 I E 01 R O 0 9 I E 02 R W 1 R O 2 0 Reversible 1 1 Heating o...

Page 321: ...W 0 Disabled 1 Enabled 9 I F 0A 0 9 I F 0B R W 0 9 I F 0C R W 1 9 I F 0D R W 0 Continuous 1 Sample 2 Request Bi zone kit settings 9 P 1 E 0B R W 0 not installed 1 2 Bizone kit installed 9 P 2 E 0C R...

Page 322: ...14 14...

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Page 324: ...draft 31 05 2022 15 53 ESIE22 09 2022 05 Copyright 2022 Daikin Verantwortung f r Energie und Umwelt...

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