Daikin ALTHERMA Service Manual Download Page 168

Page: 168 / 360

Components

Service manual

168

EBLA09~16DA + EDLA09~16DA

Daikin Altherma 3 M

ESIE20-06A – 2021.03

Measure again contacts between the pins 1‑2 of the low pressure switch
connector.

Result:

The switch MUST be open.

Fill the refrigerant circuit with nitrogen until pressurized just above reset
pressure of the low pressure switch.

Measure again contacts between the pins 1‑2 of the low pressure switch
connector.

Result:

The switch MUST be closed.

Low pressure switch connector
measurements are correct?

Then

Yes

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

Replace the low pressure switch, see

"3.13.2 Repair procedures"

[

168].

3.13.2 Repair procedures

To remove the low pressure switch

Prerequisite:

Stop the unit operation via the user interface.

Prerequisite:

Turn OFF the respective circuit breaker.

Prerequisite:

Remove the required plate work, see

"3.17 Plate work"

[

230].

Prerequisite:

Recuperate the refrigerant from the refrigerant circuit, see

"4.2.2 Repair procedures"

[

291].

If needed, remove any parts to create more space for the removal of the low
pressure switch.

Remove the screws and remove the brackets and clip from the low pressure
switch and pipe.

Screw

Bracket

Clip

Disconnect the low pressure switch connector from the appropriate PCB.

Cut all tie straps that fix the low pressure switch harness.

Summary of Contents for ALTHERMA

Page 1: ...Service manual Daikin Altherma 3 M EBLA09 16DAV3 EBLA09 16DAW1 EBLA09 16DA3V3 EBLA09 16DA3W1 EDLA09 16DAV3 EDLA09 16DAW1 EDLA09 16DA3V3 EDLA09 16DA3W1 ...

Page 2: ... 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 th...

Page 3: ... Version code Description Date ESIE20 06 Document release February 2021 ESIE20 06A See below March 2021 The following updates have been applied to the Service Manual Technical data Wiring diagram Electrical connection diagram updated Technical data Wiring diagram Wiring diagrams for Hydro module updated ...

Page 4: ... suction pressure 31 2 3 29 E5 00 Outdoor unit Overheat of inverter compressor motor 32 2 3 30 E6 00 Outdoor unit Compressor startup defect 33 2 3 31 E7 00 Outdoor unit Malfunction of outdoor unit fan motor 34 2 3 32 E8 00 Outdoor unit Power input overvoltage 34 2 3 33 E9 00 Malfunction of electronic expansion valve 35 2 3 34 EA 00 Outdoor unit Cool heat switchover problem 36 2 3 35 EC 00 Abnormal...

Page 5: ...2 3 82 UA 17 Tank type problem 65 2 3 83 UF 00 Reversed piping or bad communication wiring detection 66 2 4 Symptom based troubleshooting 67 2 4 1 Symptom Incorrect energy metering read out 67 2 4 2 Water pump related 67 2 4 3 Tap water related 69 2 4 4 Symptom User interface is failure or frozen screen 70 2 4 5 Symptom Leak 70 2 4 6 Symptom Water flow or volume too low 71 2 4 7 Compressor related...

Page 6: ...e the outdoor unit 241 3 17 7 To install the discharge grille 242 3 18 Reactor 242 3 18 1 Checking procedures 243 3 18 2 Repair procedures 244 3 19 Refrigerant pressure sensor 244 3 19 1 Checking procedures 244 3 19 2 Repair procedures 246 3 20 Thermistors 248 3 20 1 Refrigerant side thermistors 248 3 20 2 Water side thermistors 254 3 20 3 Other thermistors 261 3 21 User interface 266 3 21 1 Check...

Page 7: ... mode Remote controller 313 6 2 Wiring diagram 314 6 2 1 Wiring diagram Outdoor unit 314 6 3 Piping diagram 331 6 3 1 Piping diagram Outdoor unit 331 6 4 Component overview 333 6 4 1 Component overview Single phase with backup heater 333 6 4 2 Component overview Single phase without backup heater 335 6 4 3 Component overview Three phase with backup heater 337 6 4 4 Component overview Three phase w...

Page 8: ... and optional domestic hot water preparation An air cooled heat exchanger with inverter controlled fan A refrigerant to water heat exchanger with PWM controlled pump 2 expansion valves main and injection 2 space heating connections Water IN and Water Out System is controlled via MMI2 room interface Heating mode The compressor capacity step is defined by the condensing temperature which is calculat...

Page 9: ...MMI2 which is 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 domestic hot water tank EKHWP Floorstanding heat pump convector FWXV Wall mounted heat pump convector FWXT Concealed heat pump convector FWXM ...

Page 10: ...short and a long 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 2 Press in the error screen Result A long description of the error is displayed on the screen 2 2 To check the malfunction history Conditions The user permission level is set to advanced...

Page 11: ...he water flow See 4 3 Water circuit 4299 Possible cause Water flow is too low 4 Check the water pressure See 4 3 Water circuit 4299 Possible cause Water pressure is too low 5 Check if a by pass is installed in the water circuit See 4 3 Water circuit 4299 Possible cause No by pass installed in the water circuit 6 Clean the integrated filter of the shut off valve See 5 Maintenance 4309 Possible caus...

Page 12: ...e cause Air in the water circuit 3 Check the water flow See 4 3 Water circuit 4299 Possible cause Water flow is too low 4 Check the water pressure See 4 3 Water circuit 4299 Possible cause Water pressure is too low 5 Check if a by pass is installed in the water circuit See 4 3 Water circuit 4299 Possible cause No by pass installed in the water circuit 6 Perform an electrical check of the water flo...

Page 13: ...in the water circuit 3 Check the water flow See 4 3 Water circuit 4299 Possible cause Water flow is too low 4 Check the water pressure See 4 3 Water circuit 4299 Possible cause Water pressure is too low 5 Check if a by pass is installed in the water circuit See 4 3 Water circuit 4299 Possible cause No by pass installed in the water circuit 6 Perform an electrical check of the water flow sensor See...

Page 14: ... 3 Water circuit 4299 Possible cause Water flow is too low 4 Check the water pressure See 4 3 Water circuit 4299 Possible cause Water pressure is too low 5 Check if a by pass is installed in the water circuit See 4 3 Water circuit 4299 Possible cause No by pass installed in the water circuit 6 Perform an electrical check of the water flow sensor See 3 22 Water flow sensor 4268 Possible cause Fault...

Page 15: ...the hydro PCB See 3 12 Hydro PCB 4160 Possible cause Faulty hydro PCB INFORMATION If all procedures listed above have been performed and the problem is still present contact the helpdesk 2 3 6 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 error code INFORMATION It is recommended to ...

Page 16: ... Heat exchanger frozen Trigger Effect Reset Warning 89 02 or 89 03 occurred 3 times with less than 30 minutes between each warning 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 the inlet water thermistor See 3 20 Thermistors 4248 Possible cause Faulty inlet water thermist...

Page 17: ...w 10 Check the water pressure See 4 3 Water circuit 4299 Possible cause Water pressure is too low INFORMATION If all procedures listed above have been performed and the problem is still present contact the helpdesk 2 3 9 89 02 Heat exchanger frozen Trigger Effect Reset Condensing temperature 0 C during space heating Unit will stop operating Automatic reset Liquid refrigerant thermistor 0 C during ...

Page 18: ...he problem is still present contact the helpdesk 2 3 11 8F 00 Abnormal increase outlet water temperature domestic hot water Trigger Effect Reset Outlet water after backup heater thermistor detects a too high temperature during domestic hot water without electrical heater Unit will stop operating Manual reset via user interface To solve the error code INFORMATION It is recommended to perform the ch...

Page 19: ...e outlet water after backup heater thermistor See 3 20 Thermistors 4248 Possible cause Faulty outlet water after backup heater thermistor 3 Perform a check of the backup heater See 3 3 Backup heater 4104 Possible cause Faulty backup heater 4 Perform a check of the hydro PCB See 3 12 Hydro PCB 4160 Possible cause Faulty hydro PCB INFORMATION If all procedures listed above have been performed and th...

Page 20: ...Manual reset via user interface Power reset 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 3 14 Main PCB 4171 Possible cause Faulty main PCB 2 Perform a check of the noise filter PCB See 3 15 Noise filter PCB 4194 Possible cause Faulty noise filter PCB 3 Check if the power supply is conform with the regulations ...

Page 21: ... all stop valves of the refrigerant circuit are open See 4 2 Refrigerant circuit 4286 Possible cause Closed stop valve in the refrigerant circuit 8 Check if the refrigerant circuit is clogged See 4 2 Refrigerant circuit 4286 Possible cause Clogged refrigerant circuit 9 Check if the refrigerant circuit is correctly charged See 4 2 Refrigerant circuit 4286 Possible cause Refrigerant overcharge or sh...

Page 22: ...ulty outlet water after backup heater thermistor 7 Perform a check of the backup heater See 3 3 Backup heater 4104 Possible cause Faulty backup heater 8 Perform a check of the hydro PCB See 3 12 Hydro PCB 4160 Possible cause Faulty hydro PCB INFORMATION If all procedures listed above have been performed and the problem is still present contact the helpdesk 2 3 17 AA 02 External backup heater overh...

Page 23: ...ter heater does NOT have any feedback signal anymore Error will be triggered when bridge connection over booster heater contact is NOT made Manual reset via user interface when bridge connection is made To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Check the water flow See 4 3 Water circuit 4299 Possible cause Water flow is too low 2 Purge the wa...

Page 24: ...Disinfection setpoint is NOT reached within 6 hours or NOT kept for the required time Unit will NOT stop operating Automatic reset when disinfection is completed To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Check when the disinfection is scheduled Schedule it when there is little chance that water will be tapped so that the disinfection can fini...

Page 25: ...circuit 3 Perform a check of the hydro PCB See 3 12 Hydro PCB 4160 Possible cause Faulty hydro PCB 4 Perform a check of the 3 way valve See 3 1 3 way valve 486 Possible cause Faulty 3 way valve 5 Check the installation for a leaking field installed domestic hot water tap See 4 3 Water circuit 4299 Possible cause Leaking field installed domestic hot water tap 6 Check the settings of the backup heat...

Page 26: ...cuit for an external pump See 4 3 Water circuit 4299 Possible cause The detected water flow is caused by an external pump 5 Perform an electrical check of the water flow sensor See 3 22 Water flow sensor 4268 Possible cause Faulty water flow sensor 6 Perform a check of the hydro PCB See 3 12 Hydro PCB 4160 Possible cause Faulty hydro PCB INFORMATION If all procedures listed above have been perform...

Page 27: ...ossible cause Faulty inlet water thermistor 2 Perform a check of the outlet water after heat exchanger thermistor See 3 20 Thermistors 4248 Possible cause Faulty outlet water after heat exchanger thermistor 3 Perform a check of the refrigerant liquid thermistor See 3 20 Thermistors 4248 Possible cause Faulty refrigerant liquid thermistor 4 Perform a check of the hydro PCB See 3 12 Hydro PCB 4160 P...

Page 28: ...performed and the problem is still present contact the helpdesk 2 3 25 E1 00 Outdoor unit PCB defect Trigger Effect Reset Main PCB detects that EEPROM is abnormal Unit will stop operating Manual reset via user interface Power reset 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 3 14 Main PCB 4171 Possible cause ...

Page 29: ...sure switch Trigger Effect Reset High pressure switch opens due to measured pressure above high pressure switch operating point Unit will stop operating Manual reset via user interface High pressure control measured pressure just below high pressure switch operating point occurs 16 times within 300 minutes To solve the error code INFORMATION It is recommended to perform the checks in the listed or...

Page 30: ... still present contact the helpdesk 2 3 27 E3 24 High pressure switch abnormality Trigger Effect Reset High pressure switch opens due to measured pressure above high pressure switch operating point Unit will stop operating Manual reset via user interface High pressure control measured pressure just below high pressure switch operating point occurs 16 times within 300 minutes To solve the error cod...

Page 31: ... To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Perform a check of the suction pipe thermistor See 3 20 Thermistors 4248 Possible cause Faulty suction pipe thermistor or connector fault 2 Check that all stop valves of the refrigerant circuit are open See 4 2 Refrigerant circuit 4286 Possible cause Closed stop valve in the refrigerant circuit 3 Che...

Page 32: ...f the discharge pipe thermistor See 3 20 Thermistors 4248 Possible cause Faulty discharge pipe thermistor or connector fault 3 Perform a check of the outdoor unit fan motor See 3 16 Outdoor unit fan motor 4217 Possible cause Faulty outdoor unit fan motor 4 Perform a check of the compressor See 3 7 Compressor 4134 Possible cause Faulty compressor or miswiring of the compressor power supply cable 5 ...

Page 33: ... refrigerant circuit are open See 4 2 Refrigerant circuit 4286 Possible cause Closed stop valve in the refrigerant circuit 3 Check if the refrigerant circuit is clogged See 4 2 Refrigerant circuit 4286 Possible cause Clogged refrigerant circuit 4 Check if the refrigerant circuit is correctly charged See 4 2 Refrigerant circuit 4286 Possible cause Refrigerant overcharge or shortage 5 Check for the ...

Page 34: ...or unit fan motor 4217 Possible cause Faulty outdoor unit fan motor 2 Perform a check of the main PCB See 3 14 Main PCB 4171 Possible cause Faulty main PCB INFORMATION If all procedures listed above have been performed and the problem is still present contact the helpdesk 2 3 32 E8 00 Outdoor unit Power input overvoltage Trigger Effect Reset Compressor running current exceeds standard value for 2 ...

Page 35: ...rform a check of all refrigerant side thermistors See 3 20 Thermistors 4248 Possible cause Faulty refrigerant side thermistor s 2 Perform a check of all expansion valves See 3 9 Expansion valve 4149 Possible cause Faulty expansion valve 3 Check that all stop valves of the refrigerant circuit are open See 4 2 Refrigerant circuit 4286 Possible cause Closed stop valve in the refrigerant circuit 4 Che...

Page 36: ...a check of the main PCB See 3 14 Main PCB 4171 Possible cause Faulty main PCB 3 Perform a check of the room thermistor Measure the room temperature and compare to the room temperature shown on the user interface remote controller If temperature shown on the user interface differs from the measured temperature replace the user interface remote controller See documentation of the user interface remo...

Page 37: ...N It is recommended to perform the checks in the listed order 1 Check the water circuit for an external heat source See 4 3 Water circuit 4299 Possible cause Increased water temperature due to an external heat source 2 Perform a check of the domestic hot water tank thermistor See 3 20 Thermistors 4248 Possible cause Faulty domestic hot water tank thermistor 3 Perform a check of the hydro PCB See 3...

Page 38: ...ck if the refrigerant circuit is correctly charged See 4 2 Refrigerant circuit 4286 Possible cause Refrigerant overcharge or shortage 3 Check for the presence of non condensables and or humidity in the refrigerant circuit See 4 2 Refrigerant circuit 4286 Possible cause Non condensables and or humidity in the refrigerant circuit 4 Check if the refrigerant circuit is clogged See 4 2 Refrigerant circ...

Page 39: ... 4149 Possible cause Faulty expansion valve 5 Perform a check of the main PCB See 3 14 Main PCB 4171 Possible cause Faulty main PCB 6 Check if the refrigerant circuit is correctly charged See 4 2 Refrigerant circuit 4286 Possible cause Refrigerant overcharge 7 Check for the presence of non condensables and or humidity in the refrigerant circuit See 4 2 Refrigerant circuit 4286 Possible cause Non c...

Page 40: ...ermistor 6 Perform a check of all expansion valves See 3 9 Expansion valve 4149 Possible cause Faulty expansion valve 7 Perform a check of the main PCB See 3 14 Main PCB 4171 Possible cause Faulty main PCB 8 Check if the refrigerant circuit is correctly charged See 4 2 Refrigerant circuit 4286 Possible cause Refrigerant overcharge 9 Check for the presence of non condensables and or humidity in the...

Page 41: ...er DANGER RISK OF ELECTROCUTION Confirm the rectifier voltage is below 10 V DC before proceeding see To prevent electrical hazards 4285 5 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 cause Thermal interface grease NOT applied properly on the heat sink INFORMATION Make sure to use thermal inte...

Page 42: ... the error code INFORMATION It is recommended to perform the checks in the listed order 1 Perform a check of the high pressure switch See 3 11 High pressure switch 4157 Possible cause Faulty high pressure switch 2 Perform a check of the main PCB See 3 14 Main PCB 4171 Possible cause Faulty main PCB 3 Check if the power supply is conform with the regulations See 4 1 Electrical circuit 4284 Possible...

Page 43: ...gerant circuit 4286 Possible cause Closed stop valve in the refrigerant circuit 2 Check if the refrigerant circuit is clogged See 4 2 Refrigerant circuit 4286 Possible cause Clogged refrigerant circuit 3 Perform a check of the compressor See 3 7 Compressor 4134 Possible cause Faulty compressor or miswiring of the compressor power supply cable 4 Check liquid back issue Check expansion valve operati...

Page 44: ...y cable 2 Perform a check of the main PCB See 3 14 Main PCB 4171 Possible cause Faulty main PCB 3 Check that all stop valves of the refrigerant circuit are open See 4 2 Refrigerant circuit 4286 Possible cause Closed stop valve in the refrigerant circuit 4 Check if the refrigerant circuit is clogged See 4 2 Refrigerant circuit 4286 Possible cause Clogged refrigerant circuit 5 Check if the refrigera...

Page 45: ...ressor 4134 Possible cause Faulty compressor or miswiring of the compressor power supply cable 3 Perform a check of the reactor See 3 18 Reactor 4242 Possible cause Faulty reactor INFORMATION If all procedures listed above have been performed and the problem is still present contact the helpdesk 2 3 47 H9 00 Outdoor unit Malfunction of outdoor air thermistor Trigger Effect Reset Outdoor air thermi...

Page 46: ...ill present contact the helpdesk 2 3 49 HJ 10 Water pressure sensor abnormality Trigger Effect Reset Water pressure input is out of range Unit will NOT stop operating Automatic reset when water pressure is within range To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Check the main water supply and pressure of the installation See 4 3 Water circuit ...

Page 47: ...Faulty main PCB INFORMATION If all procedures listed above have been performed and the problem is still present contact the helpdesk 2 3 51 J5 00 Malfunction of suction pipe thermistor Trigger Effect Reset Suction pipe thermistor input is out of range 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 Per...

Page 48: ...the helpdesk 2 3 53 J6 07 Outdoor unit Malfunction of heat exchanger thermistor Trigger Effect Reset Heat exchanger thermistor 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 the heat exchanger middle thermistor See 3 20 Thermistors 4248 Possible cause...

Page 49: ...Refrigerant liquid thermistor detects 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 of the refrigerant liquid thermistor See 3 20 Thermistors 4248 Possible cause Faulty refrigerant liquid thermistor 2 Perform a check of the hydro PCB See 3 12 Hydro PC...

Page 50: ...ffect Reset Outdoor unit main PCB detects current voltage errors Unit will stop operating Manual reset via user interface Power 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 conform with the regulations See 4 1 Electrical circuit 4284 Possible cause Faulty or disturbance of the power supply imbalance 4 Power dro...

Page 51: ...ll procedures listed above have been performed and the problem is still present contact the helpdesk 2 3 59 L4 00 Outdoor unit Malfunction of inverter radiating fin temperature rise Trigger Effect Reset Radiating fin thermistor measures a too high temperature Unit will stop operating Manual reset via user interface To solve the error code INFORMATION It is recommended to perform the checks in the ...

Page 52: ...ing Manual reset via user interface To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Check that all stop valves of the refrigerant circuit are open See 4 2 Refrigerant circuit 4286 Possible cause Closed stop valve in the refrigerant circuit 2 Check if the refrigerant circuit is clogged See 4 2 Refrigerant circuit 4286 Possible cause Clogged refriger...

Page 53: ...blem is still present contact the helpdesk 2 3 61 L8 00 Malfunction triggered by a thermal protection in the main PCB Trigger Effect Reset When compressor overload except during start up is detected 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 that all stop valves of the refrigerant ...

Page 54: ...ply cable 2 Check if the power supply is conform with the regulations See 4 1 Electrical circuit 4284 Possible cause Faulty or disturbance of the power supply imbalance 4 Power drop Short circuit 3 Perform a check of the main PCB See 3 14 Main PCB 4171 Possible cause Faulty main PCB 4 Check that all stop valves of the refrigerant circuit are open See 4 2 Refrigerant circuit 4286 Possible cause Clo...

Page 55: ...e been performed and the problem is still present contact the helpdesk 2 3 64 P1 00 Open phase power supply imbalance Trigger Effect Reset Malfunction in transmission system inside the outdoor unit 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 main PCB See 3 14 Main PCB 4171 Possible...

Page 56: ...t 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 the radiation fin thermistor See 3 20 Thermistors 4248 Possible cause Faulty radiation fin thermistor 2 Perform a check of the main PCB See 3 14 Main PCB 4171 Possible cause Faulty main PCB INFORMATION If all...

Page 57: ...d stop valve in the refrigerant circuit 4 Check if the refrigerant circuit is clogged See 4 2 Refrigerant circuit 4286 Possible cause Clogged refrigerant circuit 5 Check if the refrigerant circuit is correctly charged See 4 2 Refrigerant circuit 4286 Possible cause Refrigerant shortage 6 Check for the presence of non condensables and or humidity in the refrigerant circuit See 4 2 Refrigerant circu...

Page 58: ...k of the main PCB See 3 14 Main PCB 4171 Possible cause Faulty main PCB INFORMATION If all procedures listed above have been performed and the problem is still present contact the helpdesk 2 3 70 U2 00 Outdoor unit Defect of power supply voltage Trigger Effect Reset Power supply abnormality or instant power failure is detected Unit will stop operating Power reset via outdoor unit To solve the erro...

Page 59: ...correctly Trigger Effect Reset Under floor heating screed dry out is interrupted Unit will stop operating Manual reset via user interface To solve the error code 1 Check if the power supply is conform with the regulations See 4 1 Electrical circuit 4284 Possible cause Faulty or disturbance of the power supply imbalance 4 Power drop Short circuit INFORMATION If all procedures listed above have been...

Page 60: ...ve circuit breaker DANGER RISK OF ELECTROCUTION Confirm the rectifier voltage is below 10 V DC before proceeding see To prevent electrical hazards 4285 7 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 cause Thermal interface grease NOT applied properly on the heat sink INFORMATION Make sure to ...

Page 61: ...s listed above have been performed and the problem is still present contact the helpdesk 2 3 74 U7 00 Outdoor unit Transmission malfunction between main microcomputer inverter microcomputer Trigger Effect Reset Communication abnormality between main and inverter microcomputer Unit will stop operating Manual reset via user interface To solve the error code INFORMATION It is recommended to perform t...

Page 62: ...ser interface differs from the measured temperature replace the user interface remote controller See documentation of the user interface remote controller for more information Possible cause Faulty room thermistor 4 Perform a check of the hydro PCB See 3 12 Hydro PCB 4160 Possible cause Faulty hydro PCB INFORMATION If all procedures listed above have been performed and the problem is still present...

Page 63: ...d and the problem is still present contact the helpdesk 2 3 77 U8 04 Unknown USB device Trigger Effect Reset Unknown USB device Unit will NOT stop operating Manual reset via the user interface To solve the error code 1 Remove the USB SDcard from the user interface Possible cause Connected USB SDcard to update the user interface or upload e configuration data is NOT USB mass storage device The USB ...

Page 64: ...e 3 21 User interface 4266 Possible cause Faulty wiring between the user interface and the unit PCB 2 Check if the unit user interface functions correctly See 3 21 User interface 4266 Possible cause Faulty user interface on unit 3 Perform a check of the hydro PCB See 3 12 Hydro PCB 4160 Possible cause Faulty hydro PCB 4 Check if the power supply is conform with the regulations See 4 1 Electrical c...

Page 65: ...mission between outdoor and indoor unit abnormality Improper combination of outdoor and indoor unit Unit will stop operating Power reset via outdoor unit To solve the error code INFORMATION It is recommended to perform the checks in the listed order 1 Check the wiring between the hydro PCB and the main PCB See 4 1 Electrical circuit 4284 Possible cause Faulty wiring between the hydro PCB and main ...

Page 66: ...and the problem is still present contact the helpdesk 2 3 83 UF 00 Reversed piping or bad communication wiring detection Trigger 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 checks in the listed order 1 Check that all stop valves of the refrigeran...

Page 67: ...ngs are lost Check 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 is allowed in emergency mode setting 4 00 Check setting If you do NOT want the backup heater to run automatically in emergency mode adjust setting 2 4 2 Water pump related Symptom Increas...

Page 68: ...water pump operation 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 cooling or domestic hot water off the pump is off During space heating cooling or domestic hot water on pump operation depends on setting F 0D continuous sample or request Remark in domes...

Page 69: ...ation of anode 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 Remark a NOT well controlled water softener can cause an increased amount of chlorides in the water Visual check for aluminiumhydroxide residue is ONLY possible with endoscope Drain and f...

Page 70: ...play contrast too high or too low Adjust contrast Blocked screen Mismatch between software and EEPROM on user interface Power reset and user interface reset 2 4 5 Symptom Leak Root cause category installation Possible failure Root cause Check Repair Drain connection of water safety valve leaking Bad connection between unit drain pipe and field drain pipe Check the drain connection of the water saf...

Page 71: ...Repair Compressor 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 water temperature is high enough for detailed water temperature values see the operation range in the databook Normal unit operation no specific countermeasure required Compressor guard t...

Page 72: ...ck refrigerant 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 Replace refrigerant pressure sensor Optimize the water flow through the high pressure side plate type heat exchanger Correct the refrigerant charge Compressor frequency limited Inverter contr...

Page 73: ...stor higher temperature 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 thermistor deviation Deviation of thermistor higher temperature measured than actual Check heat sink inverter thermistor Check PCB Replace heat sink inverter thermistor Replace PCB Expansion val...

Page 74: ...r unit Clogged 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 Defrost operation malfunction NOT enough defrost power shortage of refrigerant Check refrigerant charge Check for leaks Replace refrigerant Fix leaks Ice build up at entry spot of refrigerant...

Page 75: ...ng domestic hot 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 schedule is in line with the timings hot water is required Adapt the schedules if necessary Root cause category installation Possible failure Root cause Check Repair 3 way valve does NOT swi...

Page 76: ...n of the protection 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 and heat exchange Check the refrigerant charge Based on the diagnosis execute one of the following actions Replace refrigerant pressure sensor Optimize the water flow through the high pre...

Page 77: ... on the user interface 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 operation disabled Setting backup heater operation mode 4 00 is set to 0 disable Check setting 4 00 Change setting 4 00 to 1 Second step of the backup heater is NOT allowed Setting enable ...

Page 78: ...nt pressure sensor higher pressure measured than actual Deviation of refrigerant pressure sensor higher value measured than actual Check refrigerant pressure sensor Replace refrigerant pressure sensor Discharge pipe thermistor higher temperature measured than actual Deviation of thermistor higher temperature measured than actual Check discharge pipe thermistor Replace discharge pipe thermistor or ...

Page 79: ... setting Possible failure Root cause Check Repair External room thermostat used with setting C 07 on value 2 RT control Wrong setting of C 07 unit control method Check setting C 07 Adjust setting to match application see installer reference guide Backup heater operation disabled setting 4 00 is set to 0 Setting backup heater operation mode 4 00 is set to 2 ONLY domestic hot water Check setting 4 0...

Page 80: ...er pump characteristics See check of water pump Decreased water flow will cause a drop in capacity Adapt system design 2 4 12 Symptom Inaccurate temperature control Root cause category parameter setting Possible failure Root cause Check Repair Incorrect setting of unit control method setting C 07 Incorrect setting of unit control method setting C 07 leaving water control room thermostat control ex...

Page 81: ...t cause category end user Possible failure Root cause Check Repair Too high domestic hot water setpoint User set too high domestic hot water setpoint by schedule or manual operation Check domestic hot water tank set temperature avoid electric heater use Adapt domestic hot water setpoint e g 50 55 C Too high leaving water temperature setpoint User set too high leaving water temperature setpoint by ...

Page 82: ... 0D NOT set optimally Setting domestic hot water operation mode 6 0D is set to 0 reheat ONLY This will cause the system to work too frequently in domestic hot water operation and less in space heating Check setting 6 0D in combination with the re heat setpoint 6 0C It is advisable to set to factory setting reheat schedule and program the schedule to heat the domestic hot water during periods of no...

Page 83: ...outlet water temperature control Thermo on outlet water temperature setpoint Thermo off outlet water temperature 1 5 C Change setpoint if required Thermostat ON conditions for domestic hot water operation are NOT met Thermostat ON conditions for domestic hot water operation are NOT met Confirm thermostat on conditions depending on the selected domestic hot water control type setting 6 0D Change se...

Page 84: ...ck if setting space heating OFF temperature setting 4 02 is correct keep at 35 C Preferential kWh rate power supply settings and electrical connections do NOT match Preferential kWh rate power supply settings and electrical connections do NOT match Check preferential kWh rate power supply settings and electrical connections see installer reference guide Root cause category component electrical Pos...

Page 85: ... drying charge correct amount of refrigerant 2 4 15 Symptom The pump is blocked Possible causes Corrective action If the unit has been powered off for a long time lime might block the rotor of the pump Remove the screw of the stator housing and use a screwdriver to turn back and forth the ceramic shaft of the rotor until the rotor is deblocked a Note Do NOT use excessive force 2 2 1 3 a If you can...

Page 86: ...on If in intermediate 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 valve see 3 1 1 Checking procedures 486 To perform an electrical check of the 3 way valve Prerequisite First perform a mechanical check of the 3 way valve see 3 1 1 Checking procedures 486 ...

Page 87: ...user interface 11 Measure the resistance between X20A pin 3 and 5 Result The measured resistance MUST be 0 Ω 12 De activate DHW operation and activate Space operation via the user interface 13 Measure the resistance between X20A pin 1 and 5 Result The measured resistance MUST be 0 Ω Is the resistance for both measurements on connector X20A correct Action Yes Relay KVR is switching correctly Correc...

Page 88: ...n via the user interface 5 Use a contact thermometer to measure the temperature at the 3 way valve water inlet the domestic hot water exit and the space heating exit Exit Temperature 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 Component is OK Return to the troubleshooting of the ...

Page 89: ...way valve knob 4 Use a contact thermometer to measure the temperature at the 3 way valve water inlet the domestic hot water exit and the space heating exit Exit Temperature 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 motor see 3 1 2 Repair procedures 489...

Page 90: ...ve motor 6 Loosen the screw a a Screw 7 Remove the 3 way valve motor from the 3 way valve body 8 To install the 3 way valve motor see 3 1 2 Repair procedures 489 To remove the 3 way valve body Prerequisite Remove the 3 way valve motor see 3 1 2 Repair procedures 489 1 Drain water from the water circuit see 4 3 2 Repair procedures 4302 2 Remove the insulation that covers the 3 way valve body 3 Remo...

Page 91: ... way valve body see 3 1 2 Repair procedures 489 To install the 3 way valve body CAUTION Make sure the 3 way valve body axle is aligned with the 3 way valve motor when installing the 3 way valve motor on the 3 way valve body The 3 way valve motor is shipped with the 3 way valve knob in the central position 1 Check the position of the notch in the 3 way valve body axle a e c d ...

Page 92: ...y valve body axle e 3 way valve knob 2 If needed manually adjust the position of the 3 way valve axle to align the notch with the 3 way valve motor 3 Install the 3 way valve motor on the 3 way valve body 4 Tighten the screw to fix the 3 way valve motor to the 3 way valve body b a a 3 way valve motor b Screw 5 Install the 3 way valve knob on the 3 way valve motor ...

Page 93: ...stall the 3 way valve body a b a a a Clip b 3 way valve body 7 Install the 3 clips to fix the 3 way valve body to the piping 8 Install the insulation around the 3 way valve body 9 Route the 3 way valve motor harness through the grommet in the switch box 10 Connect the 3 way valve motor wiring to the wire terminal X2M 11 Install new tie straps to fix the 3 way valve harness 12 Open the valve if equ...

Page 94: ...r procedures 4302 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 CAUTION Make sure the 3 way valve body axle is aligned with the 3 way valve motor when installing the 3 way valve motor on the 3 way valve body The 3 way valve motor is shipped with the 3 way valv...

Page 95: ...otch d 3 way valve body axle e 3 way valve knob 2 If needed manually adjust the position of the 3 way valve axle to align the notch with the 3 way valve motor 3 Install the 3 way valve motor on the 3 way valve body 4 Tighten the screw to fix the 3 way valve motor to the 3 way valve body a a Screw 5 Install the 3 way valve knob on the 3 way valve motor ...

Page 96: ...e troubleshooting of the specific error and continue with the next procedure 3 2 4 way valve 3 2 1 Checking procedures INFORMATION It is recommended to perform the checks in the listed order To perform a mechanical check of the 4 way valve Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker 1 Remove the required plate work see 3 17 Plate...

Page 97: ...p No Replace the 4 way valve coil see 3 2 2 Repair procedures 4101 When outdoor unit is combined with Heating Cooling indoor unit INFORMATION This procedure is ONLY possible when the outdoor temperature is within the temperature range for both Heating and Cooling operation mode See the databook on Business Portal for the temperature range of the operation modes 1 Connect the 4 way valve connector ...

Page 98: ...ing mode 4 With the 4 way valve connector connected to the PCB measure the voltage on the 4 way valve connection of the PCB Result The measured voltage MUST be Unit Voltage in Heating mode Voltage in Cooling mode 1 phase outdoor unit 230 V AC 0 V AC 3 phase outdoor unit 12 V DC 0 V DC Is the measured voltage correct Action Yes Perform a position check of the 4 way valve see 3 2 1 Checking procedur...

Page 99: ... Check with a contact thermometer or by touching if the flow through the 4 way valve corresponds with the flow shown in the flow diagram See 6 3 Piping diagram 4331 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 correct Action Yes Skip the next step of this procedure No Perform...

Page 100: ...he flow shown in the flow diagram of the specific operation mode See 6 3 Piping diagram 4331 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 correct Action Yes 4 way valve is OK Return to the troubleshooting of the specific error and continue with the next procedure No Perform t...

Page 101: ...th the unit operating 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 unit in Defrost operation via Forced defrost see installer reference guide for more information Again perform the electrical check and position check when the unit is operating in Defrost m...

Page 102: ... the refrigerant from the refrigerant circuit see 4 2 2 Repair procedures 4291 1 Remove the 4 way valve coil from the 4 way valve body see 3 2 2 Repair procedures 4101 2 Remove and keep the putty if installed and the insulation if installed for re use 3 Supply nitrogen to the refrigerant circuit The nitrogen pressure MUST NOT exceed 0 02 MPa 4 Wrap a wet rag around the components near the 4 way va...

Page 103: ...move the plugs or caps from the refrigerant piping and make sure they are clean 2 Remove the 4 way valve coil from the spare part 4 way valve body 3 Install the 4 way valve body in the correct 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 4 way valve...

Page 104: ...he 4 way valve coil harness towards the appropriate PCB 4 Connect the 4 way valve connector to the appropriate PCB 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 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 act...

Page 105: ...tailed information INFORMATION Make sure that the wiring between the backup heater contactors and the backup heater connector is properly connected and NOT damaged check continuity see 6 2 Wiring diagram 4314 Is the measured backup heater resistance correct Action Yes Return to Checking procedures 4104 of the backup heater and continue with the next procedure No Replace the backup heater see Repai...

Page 106: ... procedures 4104 Prerequisite Check the circuit breaker Reset if it has tripped Prerequisite Check that the backup heater thermal protector functions correctly Reset if it has tripped See 3 4 Backup heater thermal protector 4121 1 Turn ON the power of the unit INFORMATION If the circuit breaker or the backup heater thermal protector trips again determine the root cause of the problem Something is ...

Page 107: ...er contactor K1M 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 step 2 Check 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 heater contactor K1M see 6 ...

Page 108: ...en wiring faulty contact see 6 2 Wiring diagram 4314 Problem solved After all checking procedures listed above have been performed 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 Repair procedures To remove the backup heater Prerequisite Stop the unit operation via the user interface Prerequisi...

Page 109: ...ter coupling g Backup heater 5 Remove the clip from the upper backup heater coupling 6 Remove 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 clip from the lower backup heater coupling a b c a Clip b Lower backup heater coupling c Backup heater 9 Separate the l...

Page 110: ... the backup heater see Repair procedures 4108 To install the backup heater 1 Install the backup heater in the correct location CAUTION Check the condition of the O rings and replace if needed Apply water to the O rings before installation 2 Install the lower backup heater coupling and install the clip a b c a Clip b Lower backup heater coupling c Backup heater INFORMATION Make sure that the back u...

Page 111: ...Connect the ground wire to the switch box using the screw Tighten the screw 6 Connect the backup heater connector X12Y 7 Install and restore all insulation if needed 8 Re install the air purge valve on the backup heater INFORMATION The spare part backup heater already has the backup heater thermal protector installed 9 Route the backup heater thermal protector harness through the grommet inside th...

Page 112: ... backup heater contactor s from the switch box 3 To install the backup heater contactor s see Repair procedures 4108 To install the backup heater contactor s 1 Install the backup heater contactor s in the switch box and fix them using the screws 2 Connect the wiring to the correct backup heater contactor terminals Is the problem solved Action Yes No further actions required No Return to Checking p...

Page 113: ...6 Ω 106 Ω 106 Ω K1M 5 159 Ω 159 Ω 106 Ω 106 Ω K1M 3 K1M 5 53 Ω 53 Ω 106 Ω 106 Ω K2M 1 K5M 13 26 5 Ω 26 5 Ω OL OL K2M 3 OL OL 53 Ω 53 Ω K2M 5 OL OL 53 Ω 53 Ω K2M 3 K2M 5 53 Ω 53 Ω 53 Ω 53 Ω K1M 5 K2M 1 132 5 Ω 132 5 Ω OL OL INFORMATION See the 6 2 Wiring diagram 4314 for more detailed information Is the measured backup heater resistance correct Action Yes Return to Checking procedures 4112 of the b...

Page 114: ...eater insulation resistance correct Action Yes Return to Checking procedures 4112 of the backup heater and continue with the next procedure No Replace the backup heater see Repair procedures 4117 To perform an electrical check of the backup heater Prerequisite First perform an insulation check of the backup heater see Checking procedures 4112 Prerequisite Check the circuit breaker Reset if it has ...

Page 115: ...heater trip Action Yes Replace the backup heater see Repair procedures 4117 No Return to Checking procedures 4112 of the backup heater and continue with the next procedure To perform a check of the backup heater contactors 1 First perform an electrical check of the backup heater see Checking procedures 4112 a a a a Backup heater contactor For backup heater option with 1 230 V 3 kW or 6 kW backup h...

Page 116: ...K5M 2 6 1 5 4 6 3 5 2 14 1 13 All measured voltages MUST be 230 V AC 10 For backup heater option with 3 400 V 6 kW or 9 kW backup heater K1M 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 K5M 2 14 1 13 The measured voltage MUST be 230 V AC 10 5 Activate backup heater step 2 6 Measure the voltage between the following terminals of the backup heater con...

Page 117: ...roken wiring faulty contact see 6 2 Wiring diagram 4314 Problem solved After all checking procedures listed above have been performed 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 Repair procedures To remove the backup heater Prerequisite Stop the unit operation via the user interface Prerequ...

Page 118: ... coupling 6 Remove 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 heater thermal protector sensor from the backup heater 9 Remove the clip from the lower backup heater coupling c a b a Clip b Lower backup heater coupling c Backup heater 10 Separate the ...

Page 119: ... in the switch box 14 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 4117 To install the backup heater 1 Install the backup heater in the correct location CAUTION Check the condition of the O rings and replace if needed Apply water to the O rings before installation 2 Install the lower backup heat...

Page 120: ...amp c 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 the switch box 7 Connect the ground wire to the switch box using the screw Tighten the screw 8 Connect the backup heater wiring to the wire terminals in the switch box and tighten the screws 9 ...

Page 121: ...ckup heater contactor 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 4117 To install the backup heater contactors 1 Install the backup heater contactors in the switch box and fix them using the screws 2 Connect the wiring to the correct backup heater contactor terminals Is the problem solved ...

Page 122: ...ISK OF BURNING 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 4121 No Replace the backup heater thermal protector see Repair procedures 4123 To perform an electrical check of the backup heater thermal protector Prerequisite First perform a mechanical check of the bac...

Page 123: ... plate work see 3 17 Plate work 4230 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 backup heater protector harness 4 Loosen and remove the 2 screws b b c d a a Backup heater thermal protector harness b Screw c Backup heater thermal protector d Backup heater 5 Remove the...

Page 124: ...ness using new 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 3 4 2 Backup heater kit Checking procedures INFORMATION It is recommended to perform the checks in the listed order To perform a mechanical check of the backup heater thermal protector Prerequisite Stop the unit operation...

Page 125: ...rature of approximately 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 4124 No Replace the backup heater thermal protector see Repair procedures 4126 To perform an electrical check of the backup heater thermal protector Prerequisite First perform a mechanical check o...

Page 126: ... and 31 32 All 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 the backup heater thermal protector see Repair procedures 4126 Repair procedures To remove the backup heater thermal protector Prerequisite Stop the unit operation via the user interface P...

Page 127: ...hermal protector 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 thermal protector and sensor from the unit 8 To install the backup heater thermal protector see Repair procedures 4126 To install the backup heater thermal protector 1 Route the backup heat...

Page 128: ...rotector 3 Connect 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 backup heater thermal protector bracket on the switch box Install and tighten the 2 screws Is the problem solved Action Yes No further actions required No Return to the troubleshooting of th...

Page 129: ...mal protector 4133 1 Remove the required plate work see 3 17 Plate work 4230 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 Ω INFORMATION See the 6 2 Wiring diagram 4314 for more detailed information INFORMATION Make sure that the wiring between the booster heater contactor and the booster hea...

Page 130: ...rrect Action Yes Return to 3 5 1 Checking procedures 4129 of the booster heater and continue with the next procedure No Replace the booster heater see 3 5 2 Repair procedures 4132 To perform an electrical check of the booster heater Prerequisite First perform an insulation check of the booster heater see 3 5 1 Checking procedures 4129 Prerequisite Check the circuit breaker Reset if it has tripped ...

Page 131: ...age between the following 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 step 2 Check the power supply source of the booster heater Is the power supply source of the booster heater correct Action Yes Correct the wiring and or components between the power...

Page 132: ...ooster heater contactor s see 3 5 2 Repair procedures 4132 No Check for the reason of faulty operating voltage broken wiring faulty contact see 6 2 Wiring diagram 4314 Problem solved After all checking procedures listed above have been performed 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 3...

Page 133: ...epair procedures 4132 To install the booster heater contactor s 1 Install the booster heater contactor s in the switch box and fix them using the screws 2 Connect the wiring to the correct booster heater contactor terminals Is the problem solved Action Yes No further actions required No Return to Checking procedures 4104 of the backup heater and continue with the next procedure 3 6 Booster heater ...

Page 134: ...ocedures 4134 To install the booster heater thermal protector 1 For the correct procedure 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 procedure 3 7 Compressor 3 7 1 Checking procedures INFORMATION It is recommended to perform the checks in the listed orde...

Page 135: ...rigerant A mechanical lock is present on the compressor Action Yes Replace the compressor see 3 7 2 Repair procedures 4140 No Perform an mechanical check of the compressor see 3 7 1 Checking procedures 4134 To perform a mechanical check of the compressor Prerequisite First perform an auditive check of the compressor see 3 7 1 Checking procedures 4134 Prerequisite Stop the unit operation via the us...

Page 136: ...perform an electrical check of the compressor 1 First perform a mechanical check of the compressor see 3 7 1 Checking procedures 4134 DANGER RISK OF ELECTROCUTION Confirm the rectifier voltage is below 10 V DC before proceeding see To prevent electrical hazards 4285 2 Remove the cover of the compressor wire terminals a a Compressor wire terminals cover 3 Disconnect the Faston connectors from the c...

Page 137: ...sure the resistance between the compressor motor windings U V V W and U W Result All measurements MUST be approximately the same Unit Compressor Winding resistance value at temperature of 20 C Single phase unit M1C 0 343 Ω 5 Three phase unit M1C 1 16 Ω 5 Compressor motor winding measurements are correct Action Yes Continue with the next step No Replace the compressor see 3 7 2 Repair procedures 41...

Page 138: ... 3 Components 486 12 Measure the current in each phase U V and W while compressor is operating All measurements MUST be the same Compressor motor winding current measurements are correct Action Yes Perform an insulation check of the compressor see 3 7 1 Checking procedures 4134 No Preventively replace the compressor see 3 7 2 Repair procedures 4140 To perform an insulation check of the compressor ...

Page 139: ...correct connection during installation V W U c Wire terminal U V Wire terminal V W Wire terminal W 4 Set the Megger voltage to 500 V DC or 1000 V DC 5 Measure the insulation resistance between the following terminals The measured insulation resistance MUST be 3 MΩ U ground V ground W ground Compressor insulation measurements are correct Action Yes Compressor is OK Return to troubleshooting of the ...

Page 140: ...ace Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 3 17 Plate work 4230 1 Detach all the strips b a a c a Strip b Compressor insulation c Compressor 2 Remove the compressor insulation from the compressor 3 To install the compressor insulation see 3 7 2 Repair procedures 4140 To install the compressor insulation 1 Install the insulation around t...

Page 141: ...Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 3 17 Plate work 4230 Prerequisite Remove the compressor insulation Prerequisite Recuperate the refrigerant from the refrigerant circuit see 4 2 2 Repair procedures 4291 1 If needed remove any parts to create more space for the removal of the compressor...

Page 142: ...low correct connection during installation V W U c Wire terminal U V Wire terminal V W Wire terminal W 4 Remove the compressor thermal protector see To remove the compressor thermal protector 4147 5 Supply nitrogen to the refrigerant circuit The nitrogen pressure MUST NOT exceed 0 02 MPa 6 Wrap a wet rag around the components near the compressor pipes Heat the brazing points of the compressor pipe...

Page 143: ... an oxygen acetylene torch 8 Remove the nuts and bolts and remove the compressor from the unit b a c a c a Nut b Compressor c Damper 9 Remove the 3 dampers from the compressor INFORMATION The compressor dampers may look different 10 Remove the bushings and keep them for re use 11 Install plugs or caps on the open pipe ends of the refrigerant piping to avoid dirt or impurities from entering the pip...

Page 144: ...all the compressor on the correct location on the dampers Properly insert the refrigerant pipes in the pipe expansions of the compressor pipes 6 Install and tighten the bolts and nuts to fix the compressor to the dampers b a c a c a Nut b Compressor c Damper INFORMATION The compressor dampers may look different 7 Supply nitrogen to the refrigerant circuit The nitrogen pressure MUST NOT exceed 0 02...

Page 145: ...4148 11 Connect the Faston connectors to the compressor wire terminals U V and W V W U c Wire terminal U V Wire terminal V W Wire terminal W 12 Install the cover of the compressor wire terminals a a Compressor wire terminals cover 13 Install the compressor insulation see 3 7 2 Repair procedures 4140 14 Perform a pressure test see 4 2 1 Checking procedures 4286 15 Add refrigerant to the refrigerant...

Page 146: ...y heat the compressor thermal protection to slightly above 132 C compressor thermal protection trips at 126 132 C INFORMATION Make sure that the wiring between the compressor thermal protector connector and the connector on the PCB is properly connected and NOT damaged check continuity see 6 2 Wiring diagram 4314 For single phase units ONLY Make sure that the high pressure switch which is wired in...

Page 147: ...tector Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 3 17 Plate work 4230 Prerequisite Remove the compressor insulation 1 Disconnect the intermediate connector from the compressor thermal protector 2 Cut all tie straps that fix the compressor thermal protector wiring harness 3 Remove ...

Page 148: ...r thermal protector 1 Install the compressor thermal protector on the compressor thermal protector bracket b a a Compressor thermal protector b Bracket 2 Install the compressor thermal protector and bracket on the compressor housing a b c a Compressor thermal protector b Bracket c Compressor 3 Connect the compressor thermal protector to the intermediate connector 4 Install new tie straps to fix th...

Page 149: ...erequisite Remove the required plate work see 3 17 Plate work 4230 1 Remove the expansion valve insulation and visually check For oil drops around the expansion valve Locate and fix as necessary Pipes for signs of damage Replace pipes as needed Coil wires for signs of damage Replace expansion valve coil as needed See 3 9 2 Repair procedures 4152 2 Remove the expansion valve coil from the expansion...

Page 150: ...me Symbol Location PCB Connector Winding resistance Main expansion valve Y1E Main X21A 46 3 Ω Injection expansion valve Y3E Main X22A 46 3 Ω INFORMATION Below is an example of the resistance measurements in which the common wire is connected to pin 6 of the expansion valve coil connector Connections may differ according to the type of expansion valve Connector pin 1 6 Connector pin 2 6 Connector p...

Page 151: ...with a contact thermometer or use an expansion valve stethoscope to see if refrigerant flows through the expansion valve Result Refrigerant MUST flow through the expansion valve 6 Wait for the PCB to command the expansion valve to open when closed or to close when open pulse output to expansion valve visible on service monitoring tool INFORMATION If the PCB does NOT command the expansion valve to ...

Page 152: ...en performed 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 3 9 2 Repair procedures To remove the expansion valve coil Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 3 17 Plate wor...

Page 153: ...refrigerant circuit The nitrogen pressure MUST NOT exceed 0 02 MPa 4 Wrap a wet rag around the components near the expansion valve pipes Heat the brazing points of the expansion valve pipes using an oxygen acetylene torch and remove the expansion valve pipes from the refrigerant pipes using pliers b a a Expansion valve body b Expansion valve pipe 5 Stop the nitrogen supply when the piping has cool...

Page 154: ...he refrigerant pipes CAUTION Overheating the valve will damage or destroy it 7 After soldering is done stop the nitrogen supply after the component has cooled down b a a Expansion valve body b Expansion valve pipe 8 To install the expansion valve coil see 3 9 2 Repair procedures 4152 9 Perform a pressure test see 4 2 1 Checking procedures 4286 10 Add refrigerant to the refrigerant circuit see 4 2 ...

Page 155: ... the expansion valve coil if applicable Is the problem solved Action Yes No further actions required No Return to 3 9 1 Checking procedures 4149 of the expansion valve and continue with the next procedure 3 10 Flow switch 3 10 1 Checking procedures To perform an electrical check of the flow switch Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circ...

Page 156: ...t procedure No Replace the flow switch see 3 10 2 Repair procedures 4156 3 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 3 17 Plate work 4230 1 Drain the water circuit see 4 3 2 Repair procedures 4302 2 Unscrew the flow switch and remov...

Page 157: ...Repair procedures 4302 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 3 11 High pressure switch 3 11 1 Checking procedures To perform an electrical check of the high pressure switch Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker...

Page 158: ...ssure switch Result The switch MUST be open INFORMATION If the high pressure switch was triggered open it will stay open until the refrigerant pressure drops below the reset pressure of the high pressure switch 7 Lower the pressure of the nitrogen in the refrigerant circuit just above reset pressure of the high pressure switch 8 Measure the resistance between the Faston connections of the high pre...

Page 159: ...sure switch Heat the brazing point of the high pressure switch pipe using an oxygen acetylene torch and remove the high pressure switch pipe from the refrigerant pipe using pliers b c b a a High pressure switch b Faston connector c High pressure switch pipe 5 Stop the nitrogen supply when the piping has cooled down 6 Remove the high pressure switch INFORMATION It is ALSO possible to cut the compon...

Page 160: ...fter soldering is done stop the nitrogen supply after the component has cooled down 6 Connect the Faston connectors to the high pressure switch 7 Perform a pressure test see 4 2 1 Checking procedures 4286 8 Add refrigerant to the refrigerant circuit see 4 2 2 Repair procedures 4291 Is the problem solved Action Yes No further actions required No Return to the troubleshooting of the specific error a...

Page 161: ...procedure No Continue with the next step Single phase units 1 Measure the output voltage on connector X803A 1 3 on the noise filter PCB Result The measured voltage MUST be 230 V AC Is the measured output voltage on the noise filter PCB correct Action Yes Correct the wiring between the noise filter PCB and the hydro PCB see 6 2 Wiring diagram 4314 No Perform a check of the noise filter PCB see Chec...

Page 162: ...rrect software is available on the PCB If NOT update using the updater tool Does the HAP LED blink in regular intervals 1 second ON 1 second OFF Action Yes Return to 3 12 1 Checking procedures 4160 of the hydro PCB and continue with the next procedure No Replace the hydro PCB see 3 12 2 Repair procedures 4164 To check if the correct spare part is installed Prerequisite First perform all earlier hy...

Page 163: ...rface Prerequisite Turn OFF the respective circuit breaker 1 Check that all wires are properly connected and that all connectors are fully plugged in 2 Check that no connectors or wires are damaged 3 Check that the wiring corresponds with the wiring diagram see 6 2 Wiring diagram 4314 INFORMATION Correct the wiring as needed Is the problem solved Action Yes No further actions required No Return to...

Page 164: ...roblem solved Action Yes No further actions required No Return to the troubleshooting of the specific error and continue with the next procedure 3 12 2 Repair procedures To remove the hydro PCB Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 3 17 Plate work 4230 1 Disconnect all connect...

Page 165: ...or correct installation of the connectors see 6 2 Wiring diagram 4314 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 connector pins of the PCB Is the problem solved Action Yes No further actions required No Return to 3 12 1 Checking procedures 4160 of the hydro PCB and continue with the nex...

Page 166: ...ir procedures 4164 To install a fuse on the hydro PCB WARNING For continued protection against risk of fire replace only with same type and rating of fuse 1 Install the fuse on the correct location on the PCB CAUTION Make sure the fuse is plugged in correctly contact with the fuse holder a a Fuse Is the problem solved Action Yes No further actions required ...

Page 167: ...tch a b e f d c a Low pressure switch protection control b Pressure c Low pressure switch closed d Low pressure switch open e Low pressure switch reset pressure f Low pressure switch operating pressure Low pressure switch Operating pressure MPa Reset pressure MPa S1PL 0 05 0 01 0 02 0 08 3 Disconnect the low pressure switch connector from the appropriate PCB 4 Measure contacts between the pins 1 2...

Page 168: ...inue with the next procedure No Replace the low pressure switch see 3 13 2 Repair procedures 4168 3 13 2 Repair procedures To remove the low pressure switch Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 3 17 Plate work 4230 Prerequisite Recuperate the refrigerant from the refrigerant ...

Page 169: ...ut the component pipe s using a pipe cutter Make 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 9 Install a plug or cap on the refrigerant piping to avoid dirt or impurities from entering the piping 10 To install the low pressure switch see 3 13 2 Repair procedures 4168 To install t...

Page 170: ...tall the brackets and clip on the low pressure switch and pipe 7 Install and tighten the screws a a b c b a Screw b Bracket c Clip 8 Route the low pressure switch harness towards the appropriate PCB 9 Fix the harness using new tie straps 10 Connect the low pressure switch connector to the appropriate PCB 11 Perform a pressure test see 4 2 1 Checking procedures 4286 12 Add refrigerant to the refrig...

Page 171: ...form the checks in the listed order To perform a power check of the main PCB Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 3 17 Plate work 4230 1 Turn ON the power of the unit 2 Measure the voltage between the wires LC NC on the main PCB Result The measured voltage MUST be 230 V AC 3 ...

Page 172: ...oltage MUST be 230 V AC 5 Measure the output voltage on connector X98A on the noise filter PCB Result The measured voltage MUST be 230 V AC c a b a LB b NB c Connector X98A Output voltage on noise filter PCB correct Action Yes Correct the wiring between the main PCB and the noise filter PCB see 4 1 2 Repair procedures 4286 No Perform a check of the noise filter PCB see Checking procedures 4194 To ...

Page 173: ... procedures 4178 To check if the correct spare part is installed Prerequisite First perform all earlier main PCB checks see Checking procedures 4171 1 Visit your local spare parts webbank 2 Enter the model name of your unit and check if the installed spare part number corresponds with the spare part number indicated in the webbank NOTICE Also check that the correct spare part is installed for the ...

Page 174: ... that no connectors or wires are damaged 4 Check that the wiring corresponds with the wiring diagram see 6 2 Wiring diagram 4314 INFORMATION Correct the wiring as needed Is the problem solved Action Yes No further actions required No Return to Checking procedures 4171 of the PCB and continue with the next procedure To check the fuse of the main PCB Prerequisite First perform all earlier main PCB c...

Page 175: ...T running and 350 365 V DC if compressor is running a b a terminal b terminal INFORMATION When measuring on the front of the main PCB make sure to locally remove the protective varnish with the test leads of the multi meter Is the measured rectifier voltage correct Action Yes Perform a check of the power modules see Checking procedures 4171 No Replace the main PCB see Repair procedures 4178 To per...

Page 176: ...with the image and the table below a d c b a V DC out b V AC in L803 coil leads c V AC in NC d V DC out INFORMATION When measuring on the front of the main PCB make sure to locally remove the protective varnish with the test leads of the multi meter VDC Com Ref VDC Com Ref d b 0 47 V b d O L b a 0 82 V a b O L d c 0 47 V c d O L c a 0 82 V a c O L 6 If the diode module is NOT OK replace the main P...

Page 177: ...cal hazards 4285 Power module V1R for compressor 2 Disconnect the compressor wires screw connections from the main PCB 3 Check the power module V1R in reference with the image and the table below d e c b a a U b V c W d C e C INFORMATION When measuring on the front of the main PCB make sure to locally remove the protective varnish with the test leads of the multi meter VDC Com Ref VDC Com Ref U C ...

Page 178: ...uired No Return to the troubleshooting of the specific error and continue with the next procedure Repair procedures To remove the main PCB Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 3 17 Plate work 4230 1 Remove the 3 bolts from the main PCB heat sink cover 2 Lift and pull the cove...

Page 179: ... the refrigerant pipe contact surface of the heat sink on the main PCB 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 insufficient cooling 4 Carefully pull the refrigerant pipe forward and install the main PCB on its mounting plate in the correct location Install and tighten the fixation screws INFORMAT...

Page 180: ...next procedure To remove a fuse of the main PCB Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 3 17 Plate work 4230 1 Remove the fuse from the PCB a a Fuse 2 To install a fuse on the main PCB see Repair procedures 4178 To install a fuse on the main PCB WARNING For continued protection ...

Page 181: ...t is recommended to perform the checks in the listed order To perform a power check of the main PCB Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker 1 Remove the required plate work see 3 17 Plate work 4230 2 Turn ON the power of the unit 3 Measure the voltage between the phases L1C L2C L3C on the main PCB Result All measurements MUST...

Page 182: ...CB correct Action Yes Return to Checking procedures 4181 of the PCB and continue with the next procedure No Continue with the next step 5 Measure the output voltage between the phases L1B L2B L3B on the noise filter PCB Result All measurements MUST be 400 V AC 10 6 Measure the output voltage on connectors X601 and X602 on the noise filter PCB Result The measured voltages MUST be 230 V AC 10 ...

Page 183: ...age on the noise filter PCB correct Action Yes Correct the wiring between the main PCB and the noise filter PCB see 4 1 2 Repair procedures 4286 No Perform a check of the noise filter PCB see Checking procedures 4204 To check the HAP LED of the main PCB Prerequisite First check the power supply to the main PCB see Checking procedures 4181 1 Locate the HAP LED on the main PCB ...

Page 184: ...m all earlier main PCB checks see Checking procedures 4181 1 Visit your local spare parts webbank 2 Enter the model name of your unit and check if the installed spare part number corresponds with the spare part number indicated in the webbank NOTICE Also check that the correct spare part is installed for the capacity adapter Is the correct spare part for the PCB installed Action Yes Return to Chec...

Page 185: ... actions required No Return to Checking procedures 4181 of the PCB and continue with the next procedure To check the fuse of the main PCB Prerequisite First perform all earlier main PCB checks see Checking procedures 4181 1 Measure the continuity of the fuse If no continuity is measured the fuse has blown a a Fuse F7U Blown fuse on the main PCB Action Yes Replace the blown fuse see Repair procedur...

Page 186: ...inal of fan circuit c terminal of compressor circuit d terminal of cmopressor circuit INFORMATION When measuring on the front of the main PCB make sure to locally remove the protective varnish with the test leads of the multi meter Is the measured rectifier voltage correct Action Yes Perform a check of the power modules of the main PCB see Checking procedures 4181 No Replace the main PCB see Repai...

Page 187: ...and the table below d e b a c a V AC in current sensor CT601 b V AC in L2C c V AC in current sensor CT602 d V DC out e V DC out INFORMATION When measuring on the front of the main PCB make sure to locally remove the protective varnish with the test leads of the multi meter VDC Com Ref VDC Com Ref a d 0 477 V d a O L b d 0 477 V d b O L c d 0 477 V d c O L e a 0 477 V a e O L e b 0 477 V b e O L e ...

Page 188: ...d O L 2 If a diode module is NOT OK replace the main PCB see Repair procedures 4190 To perform a power module check Prerequisite First check the rectifier voltage of the main PCB see Checking procedures 4181 Prerequisite Stop the unit operation via the user interface 1 Turn OFF the respective circuit breaker DANGER RISK OF ELECTROCUTION Confirm the rectifier voltage is below 10 V DC before proceed...

Page 189: ...m Ref VDC Com Ref U C 0 446 V C U O L V C 0 446 V C V O L W C 0 446 V C W O L C U 0 446 V U C O L C V 0 446 V V C O L C W 0 446 V W C O L Power module V4R for fan motor 1 Disconnect the fan motor connector from the main PCB 2 Check the power module V4R in reference with the image and the table below d e a b c a U b V c W d CB e CB INFORMATION When measuring on the front of the main PCB make sure t...

Page 190: ...e have been performed 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 Repair procedures To remove the main PCB Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker 1 Remove the required plate work see 3 17 Plate work 4230 DANGER RISK O...

Page 191: ... 9 Lift and pull the cover to remove it from the heat sink 10 Remove the main PCB fixation screws 11 Carefully pull the refrigerant pipe forward to separate it from the heat sink on the main PCB 12 Pull the refrigerant pipe forward and move the main PCB out upwards 13 Remove the bottom screw on the back of the main PCB to disconnect the ground wire 14 To install the main PCB see Repair procedures ...

Page 192: ...onnectors b L1C c L2C d L3C e Bridge connector f Connector g Screw ground wire h Bolt heat sink cover i Heat sink cover j PCB fixation screw 6 Correctly install the refrigerant pipe on the heat sink proper contact with the thermal interface grease on the heat sink of the switch box Install the heat sink cover 7 Install the 2 bolts on the heat sink cover and tighten the bolts INFORMATION Make sure ...

Page 193: ...tions required No Return to Checking procedures 4181 of the PCB and continue with the next procedure To remove a fuse of the main PCB Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 3 17 Plate work 4230 1 Remove the fuse from the PCB a a Fuse F7U 2 To install a fuse on the main PCB see ...

Page 194: ...ionality check of the noise filter PCB INFORMATION The noise filter PCB is mounted on the back side of the PCB mounting plate and therefore NOT easily accessible Therefore first perform the functionality check described below without dismounting the PCB mounting plate Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker 1 Remove the requi...

Page 195: ... the noise filter PCB Return to the troubleshooting of the specific error and continue with the next procedure No Continue with the next step 4 Measure the power supply voltage to the noise filter PCB on the terminal X1M L N Result The measured voltages MUST be 230 V AC Is the measured voltage correct Action Yes Return to Checking procedures 4194 of the PCB and continue with the next procedure No ...

Page 196: ... voltage is below 10 V DC before proceeding see To prevent electrical hazards 4285 2 Remove the 3 screws from the main PCB heat sink cover 3 Lift and pull the cover to remove it from the heat sink a a a b c f f d f e f a Heat sink cover screw b Heat sink cover c Wires U V and W d Ground wire screw e Main PCB mounting plate f Main PCB mounting plate fixation screw 4 Disconnect all connectors from t...

Page 197: ...oltage on the PCB correct Action Yes Return to Checking procedures 4194 procedures of the PCB and continue with the next procedure No Continue with the next step 12 Check the power supply to the unit see 4 1 1 Checking procedures 4284 Does the unit receive power Action Yes Correct the wiring from the main power supply terminal to the noise filter PCB see Repair procedures 4200 No Adjust the power ...

Page 198: ...h the next procedure No Replace the noise filter PCB see Repair procedures 4200 To check if the correct spare part is installed Prerequisite First perform all earlier checks of the noise filter PCB see Checking procedures 4194 1 Visit your local spare parts webbank 2 Enter the model name of your unit and check if the installed spare part number corresponds with the spare part number indicated in t...

Page 199: ...ly plugged in 2 Check that no connectors or wires are damaged 3 Check that the wiring corresponds with the wiring diagram see 6 2 Wiring diagram 4314 INFORMATION Correct the wiring as needed Is the problem solved Action Yes No further actions required No Return to Checking procedures 4194 of the noise filter PCB and continue with the next procedure To check the fuses of the noise filter PCB Prereq...

Page 200: ...ce Prerequisite Turn OFF the respective circuit breaker 1 Remove the required plate work see 3 17 Plate work 4230 2 Make sure that all wires are firmly and correctly connected see 6 2 Wiring diagram 4314 3 Check the continuity of all wires 4 Replace any damaged or broken wires Is the problem solved Action Yes No further actions required No Return to Checking procedures 4194 of the noise filter PCB...

Page 201: ...ct the ground wires from the main PCB mounting plate 8 Remove all main PCB mounting plate fixation screws 9 Pull the refrigerant pipe forward and slide the main PCB mounting plate upwards so that the noise filter PCB on the back side is easily accessible CAUTION The noise filter PCB is still connected Do NOT completely remove the main PCB mounting plate 10 Disconnect all connectors and FASTON conn...

Page 202: ...stall the noise filter PCB on its correct location a a a a a a a a a a b a PCB support b Noise filter PCB 2 Connect all connectors and FASTON connectors to the noise filter PCB 3 Connect the LA LB NA and NB wires to the noise filter PCB and tighten the screws 4 Remove the grease and apply new grease to the heat sink on the main PCB CAUTION ALWAYS apply new grease on the PCB heat sink NOT doing so ...

Page 203: ...ooks 7 Install and tighten the 3 screws so that the heat sink cover presses the refrigerant pipe a a a b c f f d f e f a Heat sink cover screw b Heat sink cover c Wires U V and W d Ground wire screw e Main PCB mounting plate f Main PCB mounting plate fixation screw 8 Connect the ground wires to the main PCB mounting plate and tighten the screw 9 Connect the U V and W wires to the main PCB and tigh...

Page 204: ...herefore NOT easily accessible Therefore first perform the functionality check described below without dismounting the PCB mounting plate Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker 1 Remove the required plate work see 3 17 Plate work 4230 2 Turn ON the power of the unit 3 Measure the output voltage of the noise filter PCB betwee...

Page 205: ...e to the noise filter PCB between each phase and N on the terminal X1M Result All measured voltages MUST be 230 V AC 10 Are the measured voltages correct Action Yes Return to Checking procedures 4204 of the PCB and continue with the next procedure No Adjust the power supply to the unit see 4 1 2 Repair procedures 4286 To perform a power check of the noise filter PCB Prerequisite First perform a fu...

Page 206: ... mounting plate fixation screws 7 Pull the refrigerant pipe forward and slide the main PCB mounting plate upwards so that the noise filter PCB on the back side is easily accessible CAUTION The noise filter PCB is still connected Do NOT completely remove the main PCB mounting plate 8 Turn ON the power of the unit 9 Measure the voltage between the phases L1A L2A L3A on the noise filter PCB Result Al...

Page 207: ...unit see 4 1 1 Checking procedures 4284 Does the unit receive power Action Yes Correct the wiring from the main power supply terminal to the noise filter PCB see Repair procedures 4211 No Adjust the power supply to the unit see 4 1 2 Repair procedures 4286 To perform an electrical check of the noise filter PCB Prerequisite First check the power supply to the noise filter PCB see Checking procedure...

Page 208: ...CB and continue with the next procedure No Replace the noise filter PCB see Repair procedures 4211 To check if the correct spare part is installed Prerequisite First perform all earlier checks of the noise filter PCB see Checking procedures 4204 1 Visit your local spare parts webbank 2 Enter the model name of your unit and check if the installed spare part number corresponds with the spare part nu...

Page 209: ...cuit breaker 1 Check that all wires are properly connected and that all connectors are fully plugged in 2 Check that no connectors or wires are damaged 3 Check that the wiring corresponds with the wiring diagram see 6 2 Wiring diagram 4314 INFORMATION Correct the wiring as needed Is the problem solved Action Yes No further actions required No Return to Checking procedures 4204 of the noise filter ...

Page 210: ...res 4211 No Return to Checking procedures 4204 of the noise filter PCB and continue with the next procedure For fuses F1U and F3U Blown fuse on the noise filter PCB Action Yes Replace the blown fuse see Repair procedures 4211 No Return to Checking procedures 4204 of the noise filter PCB and continue with the next procedure Problem solved After all checking procedures listed above have been perform...

Page 211: ...correctly connected see 6 2 Wiring diagram 4314 3 Check the continuity of all wires 4 Replace any damaged or broken wires Is the problem solved Action Yes No further actions required No Return to Checking procedures 4204 of the noise filter PCB and continue with the next procedure To remove the noise filter PCB Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the r...

Page 212: ...from the main PCB 5 Cut all cable ties that fix cables to the main PCB mounting plate 6 Remove all main PCB mounting plate fixation screws 7 Pull the refrigerant pipe forward and slide the main PCB mounting plate upwards so that the noise filter PCB on the back side is easily accessible CAUTION The noise filter PCB is still connected Do NOT completely remove the main PCB mounting plate 8 Disconnec...

Page 213: ... connectors from the noise filter PCB 10 Remove the bridge connector X605 from the noise filter PCB and keep it for reuse 11 Carefully pull the PCB at the side and unlatch the PCB supports one by one using a small pair of pliers 12 Remove the noise filter PCB from the main PCB mounting plate 13 To install the new noise filter PCB see Repair procedures 4211 To install the noise filter PCB 1 Install...

Page 214: ... the heat sink on the main PCB CAUTION ALWAYS apply new grease on the PCB heat sink NOT doing so may cause the PCB to fail due to insufficient cooling 6 Pull the refrigerant pipe forward and install the main PCB mounting plate on its correct location Install and tighten the fixation screws INFORMATION Make sure that the refrigerant pipe is correctly installed on the main PCB heat sink Do NOT touch...

Page 215: ... cables to the main PCB mounting plate using new tie straps Is the problem solved Action Yes No further actions required No Return to Checking procedures 4204 of the noise filter PCB and continue with the next procedure To remove a fuse of the noise filter PCB Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the re...

Page 216: ... a fuse on the noise filter PCB see Repair procedures 4211 To install a fuse on the noise filter PCB WARNING For continued protection against risk of fire replace only with same type and rating of fuse 1 Install the fuse on the correct location on the PCB CAUTION Make sure the fuse is plugged in correctly contact with the fuse holder ...

Page 217: ... procedures INFORMATION It is recommended to perform the checks in the listed order To perform a mechanical check of the propeller fan blade assembly Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 3 17 Plate work 4230 1 If propeller fan blade touches the bellmounth check if the fan mot...

Page 218: ...DC fan motor shaft friction normal Action Yes Perform an electrical check of the DC fan motor assembly see Checking procedures 4217 No Replace the DC fan motor assembly see Repair procedures 4220 To perform an electrical check of the DC fan motor assembly 1 First perform a mechanical check of the DC fan motor assembly see Checking procedures 4217 INFORMATION Check the DC fan motor power supply vol...

Page 219: ...in PCB Result The voltage MUST be 15 10 V DC Are both measured voltages correct Action Yes Continue with the next step No Perform a check of the main PCB see Checking procedures 4171 12 Measure the voltage on the DC fan motor connector X106A pins 4 2 rotation command on the main PCB Result The measured voltage should be 0 7 V DC It should NOT be 0 V DC Is the measured voltage 0 V DC Action Yes Per...

Page 220: ... OL 0 800 V OL OL 3 OL 0 475 V OL OL 2 OL 1 125 V 1 470 V OL 1 OL 1 700 V 1 875 V OL INFORMATION The measured values may deviate from the listed values If you measure significantly less or close to 0 where a value is shown in the table an internal short circuit is present When OL is expected NO voltage MUST be measured Are the measured voltages correct Action Yes Perform a check of the main PCB se...

Page 221: ...ION Use a pulley remover if the propeller cannot be removed manually 4 To install the propeller fan blade assembly see Repair procedures 4220 To remove the DC fan motor assembly 1 Remove the propeller fan blade assembly from the DC fan motor assembly see Repair procedures 4220 DANGER RISK OF ELECTROCUTION Confirm the rectifier voltage is below 10 V DC before proceeding see To prevent electrical ha...

Page 222: ...h the opening in the partition plate 7 Remove the 4 screws that fix the DC fan motor assembly 8 Remove the DC fan motor assembly from the unit 9 To install the DC fan motor assembly see Repair procedures 4220 To install the DC fan motor assembly 1 Install the DC fan motor assembly in the correct location 2 Fix the DC fan motor assembly to the unit by tightening the screws a b b c b e d d a DC fan ...

Page 223: ...in PCB a b c a DC fan motor connector X106A b DC fan motor harness c Wire clamp 6 Connect the DC fan motor connector to the connector X106A on the main PCB 7 Install the propeller fan blade assembly see Repair procedures 4220 To install the propeller fan blade assembly 1 Install the propeller fan blade assembly on the DC fan motor assembly CAUTION Do NOT install a damaged propeller fan blade assem...

Page 224: ...e state of the propeller fan blade assembly for damage deformations and cracks Is the propeller fan blade assembly damaged Action Yes Replace the propeller fan blade assembly see Repair procedures 4226 No Perform a mechanical check of the DC fan motor assembly see Checking procedures 4224 To perform a mechanical check of the DC fan motor assembly Prerequisite First perform a mechanical check of th...

Page 225: ...er voltage is below 10 V DC before proceeding see To prevent electrical hazards 4285 7 Check that the DC fan motor connector is properly connected to the PCB 8 Unplug the DC fan motor connector and measure the resistance between the pins 1 2 1 3 and 2 3 of the DC fan motor connector Result All measurements MUST be 7 6 Ω 10 at 20 C INFORMATION Winding resistance values above are given for reference...

Page 226: ... the nut that fixes the propeller fan blade assembly a b a Nut b Propeller fan blade assembly 3 Pull and remove the propeller fan blade assembly from the DC fan motor assembly INFORMATION Use a pulley remover if the propeller cannot be removed manually 4 To install the propeller fan blade assembly see Repair procedures 4226 To remove the DC fan motor assembly 1 Remove the propeller fan blade assem...

Page 227: ...otor harness 4 Cut the 2 tie straps that fix the DC fan motor harness to the stop valves fixation plate 5 Unlock the ferrite core to remove the DC fan motor harness from the core 6 If applicable cut the tie strap s that tie up the excessive DC fan motor harness 7 Slightly bend the harness retainers to detach the DC fan motor harness a b b c b e d d a DC fan motor harness b Harness retainer c Openi...

Page 228: ...tor assembly to the unit by tightening the screws a b b c b e d d a DC fan motor harness b Harness retainer c Opening in partition plate d Screw e DC fan motor assy 3 Route the DC fan motor harness through the opening in the partition plate 4 Route the DC fan motor harness through the harness retainers and bend the harness retainers to attach the DC fan motor harness CAUTION Tie up the excessive D...

Page 229: ...the main PCB 7 On the left side of the main PCB install new tie straps to fix the DC fan motor harness 8 Install 2 new tie straps to fix the DC fan motor harness to the stop valves fixation plate 9 Install the propeller fan blade assembly see Repair procedures 4226 To install the propeller fan blade assembly 1 Install the propeller fan blade assembly on the DC fan motor assembly CAUTION Do NOT ins...

Page 230: ...em solved Action Yes No further actions required No Return to Checking procedures 4224 of the outdoor unit fan motor and continue with the next procedure 3 17 Plate work INFORMATION If required also remove the hydrobox for easier access 3 17 1 To remove the discharge grille 1 Remove the screws 4x 2 Unhook the discharge grille from the outdoor unit ...

Page 231: ...herma 3 M ESIE20 06A 2021 03 2 1 1 2 3 17 2 To open the outdoor unit DANGER RISK OF ELECTROCUTION DANGER RISK OF BURNING SCALDING 1 1 1 2 4 3 17 3 To remove the top plate INFORMATION This procedure is just an example and may differ on some details for your actual unit ...

Page 232: ...he screws that fix the top plate a a a b a a a a a a a a Screw b Top plate 4 Remove the top plate 3 17 4 To remove the switch box Single phase unit Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker 1 Remove the required plate work see 3 17 Plate work 4230 DANGER RISK OF ELECTROCUTION Confirm the rectifier voltage is below 10 V DC befor...

Page 233: ... and disconnect the ground wire from the switch box lower right corner 8 Cut the tie straps that fix the wiring to the switch box 9 Remove the DC fan motor harness from the wire clip and leave it aside 10 Remove the screws and disconnect the compressor wiring from the main PCB 11 Disconnect the compressor thermal protector connector 12 Route all wiring on the upper right side of the switch box thr...

Page 234: ...nect the connector X803A from the noise filter PCB on the back side of the switch box 17 Remove the 3 bolts from the main PCB heat sink cover 18 Lift and pull the cover to remove it from the heat sink d c d d d a a b a a Bolt heat sink cover b Heat sink cover c Refrigerant pipe d Fixation bolt switch box 19 Carefully pull the refrigerant pipe forward to separate it from the heat sink on the switch...

Page 235: ...ltage is below 10 V DC before proceeding see To prevent electrical hazards 4285 2 Remove the protective cover sheet 3 Disconnect the electrical power supply wiring from the wire terminal 4 Disconnect the Faston connectors power supply towards hydro box from the wire terminal 5 Disconnect the intermediate connectors of the power supply wiring 6 Remove the screw and disconnect the ground wire from t...

Page 236: ...ector 12 Route all wiring on the upper left side of the switch box through the hole towards the back side of the switch box 13 Remove all wiring from the wire clips on the back side of the switch box 14 Remove the 2 bolts from the main PCB heat sink cover 15 Lift and pull the cover to remove it from the heat sink 16 Carefully pull the refrigerant pipe forward to separate it from the heat sink on t...

Page 237: ... tilt the refrigerant pipe forward 10 and avoid that the thermal interface grease gets smeared everywhere Hook the switch box mounting plate in the support plate on the right hand side 4 Install and tighten the 4 switch box fixation bolts d c d d d a a b a a Bolt heat sink cover b Heat sink cover c Refrigerant pipe d Fixation bolt switch box 5 Correctly install the refrigerant pipe on the heat sin...

Page 238: ...ve wiring harness through the wire clip and through the hole towards the front of the switch box 10 Install a new tie strap to fix the 4 way valve wiring harness 11 Route the high pressure switch compressor thermal protector wiring harness through the hole towards the front of the switch box 12 Connect the compressor thermal protector connector 13 Connect the compressor wiring to the main PCB usin...

Page 239: ...CB 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 connector pins of the PCB 17 Install new tie straps to fix the wiring to the switch box 18 Install the service port to the switch box Install and tighten the bolt 19 Connect the electrical power supply wiring to the wire terminal 20 Connect ...

Page 240: ...te to correctly install and avoid pipe bending Slightly tilt the refrigerant pipe forward 10 and avoid that the thermal interface grease gets smeared everywhere Hook the switch box mounting plate in the support plate on the right hand side 4 Install and tighten the 4 switch box fixation bolts f f g i i a h i e c c c d b b b a Service port b Connector c Tie strap d Faston connector compressor e Con...

Page 241: ...onnect it on the correct location and do NOT apply force as this may damage the connector or connector pins of the PCB 11 Install new tie straps to fix the wiring to the switch box 12 Install the service port to the switch box Install and tighten the bolt 13 Connect the electrical power supply wiring to the wire terminal a b d c a Electrical power supply wiring b Faston connectors power supply tow...

Page 242: ...ischarge grille 1 Insert the hooks To prevent breaking the hooks First insert the bottom hooks 2 Then insert the top hooks 2 2 Insert and fix the screws 4 delivered as accessory 1 2 2 1 4 N m 4 T25 3 18 Reactor INFORMATION Procedures are ONLY for reactors of the single phase outdoor unit NO procedures available for reactors of the 3 phase outdoor unit ...

Page 243: ...efore proceeding see To prevent electrical hazards 4285 2 Visually check the reactor for any damage or burnt out components If any damage is found replace the reactor see 3 18 2 Repair procedures 4244 3 Check that the reactors are firmly installed on the main PCB 4 Measure the resistance of the reactor using a low ohm multi meter Result The resistance MUST be as follows Measuring points Resistance...

Page 244: ...part of the main PCB replace the complete main PCB See 3 14 Main PCB 4171 3 19 Refrigerant pressure sensor 3 19 1 Checking procedures To perform an electrical check of the refrigerant pressure sensor Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 3 17 Plate work 4230 1 Turn ON the powe...

Page 245: ... 1 0 84 1 2 0 98 1 3 1 11 1 4 1 25 1 5 1 39 1 6 1 53 1 7 1 67 1 8 1 80 1 9 1 94 2 0 2 08 2 1 2 22 2 2 2 36 2 3 2 49 2 4 2 63 2 5 2 77 2 6 2 91 2 7 3 05 2 8 3 18 2 9 3 32 3 0 3 46 3 1 3 60 3 2 3 74 3 3 3 87 3 4 4 01 3 5 4 15 3 6 4 29 4 Measure the voltage on X17A pins 1 3 refrigerant pressure sensor output signal 5 Check that the measured voltage is in line with the expected voltage through the rea...

Page 246: ... see 3 19 2 Repair procedures 4246 No Perform a check of the main PCB see 3 14 Main PCB 4171 3 19 2 Repair procedures To remove the refrigerant pressure sensor Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 3 17 Plate work 4230 Prerequisite Recuperate the refrigerant from the refrigera...

Page 247: ...ipe s using an oxygen acetylene torch 7 Install a plug or cap on the refrigerant piping to avoid dirt or impurities from entering the piping 8 To install the refrigerant pressure sensor see 3 19 2 Repair procedures 4246 To install the refrigerant pressure sensor 1 Remove the plug or cap from the refrigerant piping and make sure it is clean 2 Install the refrigerant pressure sensor in the correct l...

Page 248: ... harness using new tie straps 9 Perform a pressure test see 4 2 1 Checking procedures 4286 10 Add refrigerant to the refrigerant circuit see 4 2 2 Repair procedures 4291 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 3 20 Thermistors 3 20 1 Refrigerant side thermistors Checking procedures INFO...

Page 249: ...rical check of the specific thermistor 1 First perform a mechanical check of the thermistor see Checking procedures 4248 2 Locate the thermistor INFORMATION Remove the thermistor from its holder if not reachable with a contact thermometer 3 Measure the temperature using a contact thermometer Name Symbol Location PCB Connector pins Reference table Air thermistor R1T Main X11A 1 3 A Discharge pipe t...

Page 250: ... 69 32 21 22 23 24 25 26 27 28 29 23 91 22 85 21 85 20 90 20 00 19 14 18 32 17 54 16 80 51 52 53 54 55 56 57 58 59 6 91 6 65 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 01 11 52 11 06 61 62 63 64 65 66 67 68 69 4 70 4 54 4 38 4 23 4 08 3 94 3 81 ...

Page 251: ...value matches the resistance determined through the measured temperature but the temperature for the corresponding thermistor is NOT correct on the user interface display replace the applicable PCB Does the measured resistance of the thermistor match with the temperature determined resistance Action Yes Thermistor is OK Return to the troubleshooting of the specific error and continue with the next...

Page 252: ... thermistors are wired to the same connector See connector and pin information of the thermistors at the start of the electrical check procedure and 6 2 Wiring diagram 4314 ALWAYS replace the complete set of thermistors wired to the same connector 5 When removing the complete set of thermistors wired to the same connector Remove all other thermistors wired to the connector from their thermistor ho...

Page 253: ...r in the holder and close the thermistor holder For refrigerant piping thermistors Pull the clip and install the thermistor in the specific thermistor holder Make sure the clip is in the correct position blocking the thermistor c a b e d f f a Clip b Thermistor c Thermistor holder d Insulation e Thermistor wire f Tie strap 2 Route the thermistor harness towards the appropriate PCB 3 Connect the th...

Page 254: ... using new tie straps 6 Install the insulation around the thermistor 7 Fix the insulation and the thermistor wire using new 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 3 20 2 Water side thermistors Checking procedures INFORMATION It is recommended to perform the checks in the lis...

Page 255: ...ct thermometer Name Symbol Location PCB Connector pins Inter mediate terminal wires Referen ce table Outlet water after plate type heat exchanger thermistor R1T Hydro X5A 1 2 A Outlet water after backup heater thermistor R2T Hydro X6A 1 2 For units with built in backup heater A For units with backup heater kit X5M 1 2 X15M 1 2 A Inlet water thermistor R4T Hydro X8A 1 2 A Domestic hot water tank th...

Page 256: ...46 47 48 49 10 21 9 81 9 42 9 06 8 71 8 37 8 05 7 75 7 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 26 27 28 29 23 91 22 85 21 85 20 90 20 00 19 14 18 32 17 54 16 80 51 52 53 54 55 56 57 58 59 6 91 6 65 6 41 6 65 6 41 6 18 5 95 5 74 5 14 0 65 84 ...

Page 257: ...1 85 kΩ Resistance at 24 C 20 90 kΩ Disconnect connector and measure resistance between X5A pin 1 2 Measured resistance 21 86 kΩ Measured resistance value is inside the range R1T thermistor passes the check INFORMATION All thermistors have a resistance tolerance of 3 INFORMATION In most cases the user interface allows to monitor the thermistors If the measured resistance value matches the resistan...

Page 258: ...thermistor from the intermediate connector and measure the resistance of the thermistor between the appropriate pins of the connector Does the measured resistance of the thermistor match with the temperature determined resistance Action Yes Correct the wiring between the thermistor connector on the PCB and the intermediate connector see 6 2 Wiring diagram 4314 No Replace the specific thermistor se...

Page 259: ...e and the 6 2 Wiring diagram 4314 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 disconnect the thermistor connector from the intermediate connector If directly connected to the PCB disconnect the thermistor connector from the PCB 7 To install the thermi...

Page 260: ...ng new tie straps INFORMATION See the overview of the thermistors at the start of the electrical check procedure and the 6 2 Wiring diagram 4314 to determine if the specific thermistor is either Directly connected to the PCB Connected to an intermediate connector which is connected to the PCB 4 If connected to an intermediate connector connect the thermistor connector to the intermediate connector...

Page 261: ...ate the thermistor 2 Remove the insulation if needed Check that the thermistor is correctly installed and that there is thermal contact between the thermistor and the piping or ambient Is the thermistor correctly installed thermal contact between the thermistor and the piping or ambient Action Yes Perform an electrical check of the specific thermistor see Checking procedures 4261 No Correctly inst...

Page 262: ...1 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 26 27 28 29 23 91 22 85 21 85 20 90 20 00 19 14 18 32 17 54 16 80 51 52 53 54 55 56 57 58 59 6 91 6 65 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 1...

Page 263: ...e thermistor match with the temperature determined resistance Action Yes Thermistor is OK Return to the troubleshooting of the specific error and continue with the next procedure No Continue with the next step INFORMATION Make sure that the wiring between the wiring terminal on the unit and the thermistor is properly connected and NOT damaged check continuity see 6 2 Wiring diagram 4314 7 Disconne...

Page 264: ...interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 3 17 Plate work 4230 1 Locate the thermistor on the appropriate PCB 2 Measure the temperature using a contact thermometer Name Symbol Location PCB Connector pins Reference table Radiation fin thermistor R11T Main O U X111A 1 2 A INFORMATION The thermistors may vary according to the specif...

Page 265: ...connection points of the thermistor 5 Check that the measured resistance value matches the resistance determined through the measured temperature earlier step in the procedure E g R11T thermistor Measured temperature with contact thermometer 23 1 C Resistance value determined through temperature using the thermistor table A Resistance at 20 C 24 3 kΩ Resistance at 25 C 19 4 kΩ Measure resistance b...

Page 266: ...user interface 1 Check that information is shown and can be navigated through on the display of the remote controller user interface 2 Check the display for the following items Pinhole bright spot black spot white spot black line white line foreign particle bubble The color of a small area is different from the remainder The phenomenon does NOT change with voltage Contrast variation The color of a...

Page 267: ... and the PCB with the ones provided in the Updater Tool Re install the software with the Updater Tool if versions do NOT match Is the installed software and EEPROM version correct Action Yes Return to the troubleshooting of the specific error and continue with the next procedure No Re install the software with the Updater Tool see 3 21 2 Repair procedures 4268 To check the communication wiring bet...

Page 268: ...em 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 software 1 Install the software using the Updater Tool See the Business Portal http www 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...

Page 269: ...to monitor the water flow If the calculated water flow matches the measured water flow but the water flow is NOT correct on the user interface display replace the applicable PCB Do the measured and calculated water flow match Action Yes Water flow sensor is OK Return to the troubleshooting of the specific error and continue with the next procedure No Continue with the next step 10 Unplug the water...

Page 270: ...l the water flow sensor wiring harness 1 Connect the wiring harness to the connector X4A on the hydro PCB 2 Route the wiring harness towards the water flow sensor and connect the wiring harness to the water flow sensor 3 Fix the wiring harness using new tie straps Is the problem solved Action Yes No further actions required No Return to the troubleshooting of the specific error and continue with t...

Page 271: ...Slide the clip over the connection until it snaps into place c a b b a Water flow sensor connector nut b Clip c Water flow sensor 4 Install the water flow sensor on the outlet 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 flow sensor connector nut I...

Page 272: ...e unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 3 17 Plate work 4230 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 Using the graphic below determine the expected sensor output voltage based on the measured pressure 0...

Page 273: ...ins 2 3 water pressure sensor output on the hydro PCB 5 Check that the measured voltage is in line with the expected voltage through the measured 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 pressure but the water pressure is NOT correct on the user int...

Page 274: ... on hydro PCB Is the measured voltage 5 V DC Action Yes Correct the wiring between the hydro PCB and the connector X7Y see 6 2 Wiring diagram 4314 No Perform a check of the hydro PCB see 3 12 1 Checking procedures 4160 10 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 ...

Page 275: ... procedure To remove the water pressure sensor Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 3 17 Plate work 4230 1 Drain water from the water circuit see 4 3 2 Repair procedures 4302 2 Disconnect the water pressure sensor connector from the water pressure sensor a b A B a b A Unit wi...

Page 276: ...vessel otherwise the overpressure will be generated 5 Open the stop valves and add water to the water circuit if needed see 4 3 2 Repair procedures 4302 6 Purge the water circuit see 4 3 2 Repair procedure 4302 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 3 24 Water pump 3 24 1 Checking proc...

Page 277: ...purities or any objects 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 3 24 2 Repair procedures 4279 No Replace the water pump housing see 3 24 2 Repair procedures 4279 To perform an electrical check of the water pump 1 First perform a mechanical check of the water pump see 3 24 1 Checking procedures 4276 ...

Page 278: ...measured voltage correct Action Yes Replace the power supply wiring harness between the water pump and the hydro PCB see 3 24 2 Repair procedures 4279 No Perform a check of the hydro PCB see 3 12 1 Checking procedures 4160 12 Connect the power supply connector to the water pump 13 Unplug the PWM signal connector from the water pump 14 Remove the cap from the PWM signal connector and measure the PW...

Page 279: ...ures 4279 No Perform a check of the hydro PCB see 3 12 1 Checking procedures 4160 3 24 2 Repair procedures To remove impurities from the water pump housing Prerequisite Remove the water pump housing see 3 24 2 Repair procedures 4279 1 Remove any impurities or objects that may block the water pump 2 Install the water pump housing see 3 24 2 Repair procedures 4279 Is the problem solved Action Yes No...

Page 280: ...ter pump motor from the pump housing 4 Remove the water pump motor 5 To install the water pump motor see 3 24 2 Repair procedures 4279 To install the water pump motor 1 Install the motor on the water pump housing b b d c a a a Connector b Bolt c Water pump motor d Pump housing CAUTION Make sure to correctly install the water pump motor and the seal Fix the water pump motor by tightening the 4 bolt...

Page 281: ...Remove the required plate work see 3 17 Plate work 4230 1 Drain water from the water circuit see 4 3 2 Repair procedures 4302 2 Disconnect the connectors from the water pump motor b c a a a Connector b Nut c Water pump housing 3 Unscrew the upper and lower nuts that fix the water pump housing to the water circuit pipes CAUTION Use a counterforce when unscrewing or tightening the nuts to make sure ...

Page 282: ...l be generated 5 Open the stop valves and add water to the water circuit if needed see 4 3 2 Repair procedures 4302 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 pump wiring harness Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respe...

Page 283: ...ss 1 Connect the wiring harness to the appropriate connector X16A on hydro PCB for power supply wiring harness X25A on hydro PCB for PWM signal wiring harness 2 Route the wiring harness towards the water pump and connect the wiring harness to the appropriate connector power supply and or PWM signal of the water pump 3 Fix the wiring harness using new tie straps Is the problem solved Action Yes No ...

Page 284: ... single phase units 4 Measure the voltage between L and N on the power supply terminal X1M The voltage MUST be 230 V AC 10 For three phase units 5 Measure the voltage between the phases L1 L2 L3 on the power supply terminal X1M The voltage MUST be 400 V AC 10 6 Measure the voltage between L1 and N on the power supply terminal X1M The voltage MUST be 230 V AC 10 7 Unbalance between the phases MUST ...

Page 285: ...at the power supply is shut off In addition measure points as shown in the figure with a tester and confirm that the voltage of the capacitor in the main circuit is less than 10 V DC C C C C A B A 3 phase unit B 1 phase unit DANGER 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 ...

Page 286: ...ation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 3 17 Plate work 4230 1 Make sure that all wires are firmly and correctly connected see 6 2 Wiring diagram 4314 2 Check the continuity of all wires 3 Replace any damaged or broken wires Is the problem solved Action Yes No further actions required No Return to the trouble...

Page 287: ...ace 3 Wait for 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 thermometer measure the temperature before and after every restricting device If a big temperature difference is measured 2 5 4K an internal pipe obstruction may be present at this location INFOR...

Page 288: ...rload control 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 over current relay trips 3 The subcooling degree of refriferant in liquid form rises values 4 5K are NOT normal Cooling Proper amount Further overcharge Degree of overcharge To maintain...

Page 289: ...ee of suction 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 capacity Cooling Proper amount Higher degree of shortage Degree of shortage To maintain low pressure operating frequency decreases on the capacity control Low pressure is maintained at a...

Page 290: ...erate refrigerant until correctly charged see 4 2 2 Repair procedures 4291 To check for non condensables in the refrigerant circuit Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker 1 Wait for the refrigerant to reach the outdoor temperature 2 Connect a manometer to the service port 3 Measure the pressure of the refrigerant The measure...

Page 291: ...e regulations Adjust as needed See installation manual for field piping specifications 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 2 2 Repair procedures To open the stop valves of the refrigerant circuit Prerequisite Remove the required plate work see 3 17 Plate work 4230 1 Remove the cap...

Page 292: ... 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 recuperate the refrigerant Prerequisite Stop the unit operation via the user interface 1 Necessary tools Service tool Remark Refrigerant recovery unit Compatible with the refrigerant to be recovered Scale Read out 10 grams Manifold Compatible wit...

Page 293: ...ery bottle Without this additional setup the discharge line from the recovery device to the refrigerant cylinder would not have been vacuumed 3 Connect the vacuum pump manifold recovery unit and refrigerant recovery cylinder to the service ports of the refrigerant circuit as shown below Make sure the stop valves are open a c d b e f c c g h i j a Liquid service port b Gas service port c Flexible h...

Page 294: ...and continue with the next procedure Recovery mode In case of 1N models 7 LEDs display Before recovering refrigerant make sure the electronic expansion valves are open When power is ON this has to be done by using the recovery mode Components To activate deactivate the recovery mode you need the following components 1N BS2 SET BS1 MODE BS3 RETURN BS4 PUMP DOWN H1P H2P H3P H4P H5P H6P H7P DEMAND L ...

Page 295: ...r recovering refrigerant deactivate the recovery mode as follows Procedure 7 LEDs display a H1P H2P H3P H4P H5P H6P H7P 1 Press and hold BS1 for 5 seconds 2 Press BS2 9 times 3 Press BS3 once 4 Press BS2 once 5 Press BS3 once 6 Press BS3 once 7 Press BS1 once to return to the default situation a OFF ON and flashing Result The recovery mode is deactivated The unit returns the electronic expansion v...

Page 296: ... get confused in the middle of the process press BS1 to return to the default situation Before recovering refrigerant activate the recovery mode as follows Action 7 segments display a 1 Start from the default situation 2 Select mode 2 Press and hold BS1 for 5 seconds 3 Select setting 9 Press BS2 9 times 4 Select value 2 a Display the current value Press BS3 once b Change the value to 2 Press BS2 o...

Page 297: ...2 a Display the current value Press BS3 once b Change the value to 2 Press BS2 once c Enter the value in the system Press BS3 once d Confirm Press BS3 once 5 Return to the default situation Press BS1 once a OFF ON and flashing Result The recovery mode is deactivated The unit returns the electronic expansion valves to their initial state INFORMATION Power OFF When power is turned OFF and turned ON ...

Page 298: ...door unit To protect the environment make sure to perform the following pump down operation when relocating the unit DANGER RISK OF EXPLOSION Pump down Refrigerant leakage If you want to pump down the system and there is a leak in the refrigerant circuit Do NOT use the unit s automatic pump down function with which you can collect all refrigerant from the system into the outdoor unit Possible cons...

Page 299: ...flux material Flush the piping before brazing with nitrogen to avoid oxidation of the inside of the copper tubes nitrogen purity 99 99 4 3 Water circuit 4 3 1 Checking procedures To check for an external pump 1 Inspect the installation outside the unit and check for the presence of an external pump This may have an impact on the water flow inside the unit An external pump was found in the installa...

Page 300: ...red flow rate is Cooling 20 l min Heating defrost when outdoor temperature is above 5 C Heating defrost when outdoor temperature is below 5 C 22 l min Domestic hot water production 28 l min Is the water flow correct Action Yes Return to the troubleshooting of the specific error and continue with the next procedure No Continue with the next step 4 Check the water pressure see 4 3 1 Checking procedu...

Page 301: ...lled on the correct locations 1 Check the installation outside the unit All highest points of the installation MUST have air purge valves installed The air purge valves MUST NOT be installed on other locations All air purge valves are installed on the correct locations Action Yes Return to the troubleshooting of the specific error and continue with the next procedure No Install the specific air pu...

Page 302: ... Inspect the installation outside the unit and check for leaks A leak was found in the installation Action Yes Repair the leak in the installation see 4 3 2 Repair procedures 4302 No Return to the troubleshooting of the specific error and continue with the next procedure To check the main water supply and pressure 1 Check that the main water supply and pressure of the installation is within the ex...

Page 303: ...ocedure To remove drain water from the water circuit INFORMATION This procedure partially drains the water circuit sufficient for component replacement Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker Prerequisite Remove the required plate work see 3 17 Plate work 4230 1 Close the stop valves of the water circuit 2 Open the air purge ...

Page 304: ... Yes No further actions required No Return to the troubleshooting of the specific error and continue with the next procedure To open the stop valves of the water circuit 1 The stop valves are located outside the unit Open the valves by placing them in line with the piping Is the problem solved Action Yes No further actions required No Return to the troubleshooting of the specific error and continu...

Page 305: ...isite Turn OFF the respective circuit breaker 1 Install field installed air purge valves on all highest points of the installation outside the unit 2 Purge the water circuit see 4 3 2 Repair procedures 4302 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 purge the water circuit 1 Check that ...

Page 306: ...b c a d e a By pass b Underfloor heating cooling circuit c Radiators circuit d Indoor or outdoor unit e Space heating cooling water circuit 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 replace the leaking domestic hot water tap in the water circuit 1 Replace the leaking domestic hot water...

Page 307: ... component Does the component function correctly Action Yes Return to the troubleshooting of the specific error and continue with the next procedure No Adjust the specific component see 4 4 2 Repair procedures 4307 4 4 2 Repair procedures To adjust the manufacturer component 1 See the specific dealer manual to adjust your component Is the problem solved Action Yes No further actions required No Re...

Page 308: ...cedure No Wait for the outdoor temperature to return within the operating range To check the required space around the outdoor unit heat exchanger 1 Check if the space around the outdoor unit heat exchanger is sufficient See the installation manual for the required space specifications Adjust as needed Is the problem solved Action Yes No further actions required No Return to the troubleshooting of...

Page 309: ...heat exchanger during the cleaning process 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 2 To clean the integrated filter of the shut off valve Prerequisite Stop the unit operation via the user interface Prerequisite Turn OFF the respective circuit breaker 1 Close the shut off valve 2 Unscr...

Page 310: ...lter with care Do NOT use excessive force when you reinsert the water filter so as NOT to damage the water filter mesh 6 Screw the bottom cap back on 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 error and continue with the next procedure ...

Page 311: ...unit contains several pipe heaters to avoid freezing of the water circuit Yearly check the correct functioning of these pipe heaters and repair as needed Below is an overview of the different pipe heaters and technical data Also check the 6 2 Wiring diagram 4314 for more information b c a c d e d e a E6H b E9H c E10H d E11H e E12H ...

Page 312: ...Y 1 2 Own bimetal thermostat ON T 4 C OFF T 9 C E10H Expansion vessel flex Tape heater Hydro A1P X24A X7M 1 2 X14Y 1 2 Own bimetal thermostat ON T 4 C OFF T 9 C E11H Water inlet Tape heater Hydro A1P X2A X28A X7M 3 4 Contact KCR on PCB ON outdoor T 5 C and inlet water T 6 C OFF outdoor T 10 C or inlet water T 11 C E12H Water outlet after heat exchanger Tape heater Hydro A1P X2A X28A X7M 3 4 Contac...

Page 313: ...nical data 6 1 Detailed information setting mode 6 1 1 Detailed information setting mode Outdoor unit See the installer reference guide on business portal for more information 6 1 2 Detailed information setting mode Remote controller See the installer reference guide on business portal for more information ...

Page 314: ...mpressor switch box layout Front Front Rear Rear 3 Legend 3 Legend Optional Field supply A1P Printed circuit board main A2P Printed circuit board noise filter A3P only for 1N models Printed circuit board flash Q1DI Earth leakage circuit breaker X1M Terminal strip 4 Notes 4 Notes X1M Main terminal Earth wiring Field supply 1 Several wiring possibilities Option Wiring depending on model Switch box P...

Page 315: ...Outdoor SWB1 Hydro switch box 1 front side SWB2 Hydro switch box 2 right side Use normal kWh rate power supply for hydro SWB Use normal kWh rate power supply for hydro switch box 2 Hydro SWB layout 2 Hydro switch box layout For external BUH option For external backup heater kit For internal BUH option For models with integrated backup heater SWB1 Hydro switch box 1 front side SWB2 Hydro switch box...

Page 316: ...nector DS1 A8P DIP switch E P A9P Indication LED F1B Overcurrent fuse backup 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 Safety contactor backup heater K3M Contactor booster heater K R A4P Relay on PCB M2P Domestic hot water pump M2S 2 way valve for cooling mode M3S 3 way valve for floorheating domestic hot wat...

Page 317: ... supply transformer X4M Terminal strip booster heater power supply X8M Terminal strip power supply at client side X9M Terminal strip integrated backup heater power supply X10M Terminal strip Smart Grid power supply X X A X Y Connector X M Terminal strip 5 Option PCBs 5 Option PCBs Alarm output Alarm output Changeover to ext heat source Changeover to external heat source Max load Maximum load Min l...

Page 318: ...nrush Inrush current Max load Maximum load MMI Standalone user interface delivered as accessory NO valve Normal open valve Only for Only for Preferential 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 Dedicated Human Comfort Interface BRC1HHDA used as room thermostat ...

Page 319: ...1 Connection diagram For internal BUH option For models with integrated backup heater Hydro Hydro module Outdoor Outdoor SWB2 Hydro switch box 2 right side 2 Notes 2 Notes X1M Terminal main X2M Terminal field wiring for AC X4M Terminal booster heater power supply X5M Terminal field wiring for DC X9M Terminal integrated backup heater power supply X10M Terminal Smart Grid Earth wiring Field supply 1...

Page 320: ...tage Smart Grid relay K1M Safety contactor backup heater K3M Contactor booster heater Q1DI Earth leakage circuit breaker TR1 Power supply transformer X4M Terminal strip booster heater power supply X6M Terminal strip power supply at client side X9M Terminal strip integrated backup heater power supply X10M Terminal high voltage Smart Grid X A Connector X M Terminal strip ...

Page 321: ...or normal power supply installation Alarm indication signal 2 core signal 2 core signal 2 core signal 2 core Flow switch signal 2 core 2 core 2 core 2 core 2 core 5 core R2T External sensor floor or ambient Only for KRTETS WLAN cartridge signal 2 core 3m included A14P P1 P2 user interface Only for Human Comfort Interface Only for KRTR wireless room thermostat Only for KRTW wired room thermostat 5 ...

Page 322: ...R X803A 1 3 5 TC RC 10 3 4 5 X802A 1 7 8 9 6 LC NC V2R W V U M1C MS 3 V1R M1F MS 3 1 X106A 2 3 4 5 X111A 1 2 X11A 1 2 2 X12A 1 3 4 5 6 7 8 1 X22A 2 3 4 5 6 Y1S S1PL P 1 X31A 2 1 X25A 2 K1R Y3E Injection M 1 X21A 2 3 4 5 6 Y1E Main M 1 X17A 2 3 4 DS1 1 OFF ON 2 BS1 BS2 BS3 BS4 F6U R11T t R1T t R2T t R3T t R4T t R5T t S1PH P 1 X32A 2 X6A 1 2 3 4 5 6 7 8 9 10 11 12 X41A 1 2 3 4 5 K11M K10R R1 Z6F L2R...

Page 323: ... 1 2 2 X12A 1 3 4 5 6 7 8 1 X22A 2 3 4 5 6 Y3E Injection M 1 X21A 2 3 4 5 6 Y1E Main M 1 X17A 2 3 4 DS1 1 OFF ON 2 BS1 BS2 BS3 F7U R11T t R1T t R2T t R3T t R4T t R5T t X6A 1 2 3 4 5 6 7 8 9 10 11 12 X41A 1 2 3 4 5 K1M L2R C2 2 X802A 1 Z3F L1A NA PE F4U Q1DI X1M L1 L2 L3 N L2A L3A F5U Z4F L2B L3B F3U L1R C3 R2 R3 R1 V2D R4 C1 K2M t K3M L2C L3C V1D Z5F L4R SEG1 SEG2 SEG3 1 X601 2 X803A 1 3 5 M1F MS ...

Page 324: ...ection voltage supplied by PCB SWB1 for HV smartgrid for HP tarrif Smartgrid contacts Electric pulse meter input 12 V DC pulse detection voltage supplied by PCB 1 3 for smartgrid Smartgrid PV power pulse meter for safety thermostat Safety thermostat contact 16 V DC detection voltage supplied by PCB 2 2 4 4 Only for domestic hot water option SWB1 1 for LV smartgrid 230V AC Control Device R3T t X5A ...

Page 325: ...3 For external BUH option Only for EB DLA DA and EWA Y DA H Only for EB DLA DA and EWA Y DA H only for heat pump convector Main LWT zone only for heat pump convector Add LWT zone 6 7 Z1C N 2 Only for DAV3 DAW1 5 5 SWB2 6 5 4 3 2 1 X25A X16A 5 1 3 X17A 1 3 5 7 1 X24A 3 5 7 1 3 X1A 2 X11YA X11Y 1 FU1 3 1 X3A X20A 1 3 X2A 5 1 X21A 1 3 M2P M 1 X15A 1 3 X14A 1 3 K4R KPR 3 X11A 1 X12A 3 1 3 X13A 1 K1R K...

Page 326: ...the unit Correct diagrams are supplied with the unit and can also be found in the technical data book 4D124072A domestic hot water tank SWB 1 SWB1 SWB2 SWB1 1N 50 Hz 230 V AC Internal BUH SWB 2 SWB 1 SWB2 SWB2 SWB1 SWB2 1N or 3 50 Hz 230 V AC E5H Q1DI 3 4 1 2 K3M 1 2 3 4 F2B I I 2 1 Q2L 3 4 F2T X8M X4M F1T E3H X9M L N PE 1 2 K1M 3 4 Q1DI 1 2 3 4 F1B I I L N X6M X12Y X12YA 1 2 3 L L1 N L2 ...

Page 327: ...rams 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 data book 4D124072A X3M K1M X7M A4P X2M SWB1 A1P X5M X10M K1A K2A A8P K3M X4M TR1 SWB2 X9M X2M X4M SWB2 SWB3 0 0 For external BUH option For internal BUH model ...

Page 328: ... 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 data book 4D124072A P1P2 PSU SW2 SW1 X4 30 USB X3A CAN SD CARD X10 WLAN UART Interface Debug UART Interface 2 X1B 4 SW3 SW4 SW5 P1M A11P 1 3 X22 WLAN Cartridge 3 X9 1 4 2 5 3 X5 1 4 2 5 X5M 12 X5M 11 X5M 15 X5M 16 ...

Page 329: ...UH Option EKLBUHCB6W1 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 6 5 14 13 2 1 4 3 6 5 8 7 F1B I I I I L1 L2 L3 N 5 6 X14M 1 2 3 4 F1T F1T F1T E1H E1H E1H F1T F1T F1T E2H E2H E2H 5 6 4 1 X14M 4 3 2 1 PE Q3DI 4 3 6 5 2 1 4 3 6 5 2 1 6 5 14 13 2 1 4 3 ...

Page 330: ...herma 3 M ESIE20 06A 2021 03 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 data book 4D124072A X14M K1M F1B K2M K5M Q1L X15M EKLBUHCB6W1 ...

Page 331: ...ronic expansion valve main d Plate heat exchanger Y3E Electronic expansion valve injection e Flow sensor Y1S Solenoid valve 4 way valve f Expansion vessel g Backup heater Thermistors hydro module h Automatic air purge valve R1T Outlet water heat exchanger i Safety valve R2T Outlet water backup heater j Pump R3T Refrigerant liquid side k Connection for optional flow switch R4T Inlet water l Liquid ...

Page 332: ...xpansion valve main d Plate heat exchanger Y3E Electronic expansion valve injection e Flow sensor Y1S Solenoid valve 4 way valve f Expansion vessel g Safety valve Thermistors hydro module h Manual air purge valve R1T Outlet water heat exchanger i Pump R3T Refrigerant liquid side j Connection for optional flow switch R4T Inlet water k Liquid stop valve with service port l Gas stop valve with servic...

Page 333: ...tlet water after backup heater thermistor R2T q Fan d Safety valve r Fan motor M1F e Backup heater thermal protector s Switch box with noise filter PCB A2P on back side f Automatic air purge valve t Main PCB A1P g Heat exchanger middle thermistor R5T u Hydro box h Heat exchanger v Hydro PCB A1P i Air thermistor R1T w Water pump j Backup heater x Water flow sensor B1L k Heat exchanger thermistor R4...

Page 334: ...h i n a Discharge pipe thermistor R2T h Accumulator b High pressure switch S1PH i Filter c Muffler j Expansion valve injection Y3E d 4 way valve Y1S k Compressor M1C e Suction thermistor R3T l Expansion valve main Y1E f Low pressure switch S1PL m Compressor thermal protector g Refrigerant pressure sensor S1NPH n Service port ...

Page 335: ...e filter PCB A2P on back side d Heat exchanger middle thermistor R5T q Main PCB A1P e Heat exchanger r Hydro box f Air thermistor R1T s Hydro PCB A1P g Water pressure sensor B1PW t Water pump h Heat exchanger thermistor R4T u Water flow sensor B1L i Water outlet v Drain valve j Water inlet w Plate type heat exchanger k Refrigerant liquid thermistor R3T x Gas stop valve with service port l Inlet wa...

Page 336: ...h i n a Discharge pipe thermistor R2T h Accumulator b High pressure switch S1PH i Filter c Muffler j Expansion valve injection Y3E d 4 way valve Y1S k Compressor M1C e Suction thermistor R3T l Expansion valve main Y1E f Low pressure switch S1PL m Compressor thermal protector g Refrigerant pressure sensor S1NPH n Service port ...

Page 337: ...fter backup heater thermistor R2T q Fan d Safety valve r Fan motor M1F e Backup heater thermal protector s Switch box with noise filter PCB A2P on back side f Automatic air purge valve t Main PCB A1P g Heat exchanger middle thermistor R5T u Hydro box h Heat exchanger v Hydro PCB A1P i Air thermistor R1T w Water pump j Backup heater x Water flow sensor B1L k Heat exchanger thermistor R4T y Drain va...

Page 338: ...h i n a Discharge pipe thermistor R2T h Accumulator b High pressure switch S1PH i Filter c Muffler j Expansion valve injection Y3E d 4 way valve Y1S k Compressor M1C e Suction thermistor R3T l Expansion valve main Y1E f Low pressure switch S1PL m Compressor thermal protector g Refrigerant pressure sensor S1NPH n Service port ...

Page 339: ... filter PCB A2P on back side d Heat exchanger middle thermistor R5T q Main PCB A1P e Heat exchanger r Hydro box f Air thermistor R1T s Hydro PCB A1P g Water pressure sensor B1PW t Water pump h Heat exchanger thermistor R4T u Water flow sensor B1L i Water outlet v Drain valve j Water inlet w Plate type heat exchanger k Refrigerant liquid thermistor R3T x Gas stop valve with service port l Inlet wat...

Page 340: ...h i n a Discharge pipe thermistor R2T h Accumulator b High pressure switch S1PH i Filter c Muffler j Expansion valve injection Y3E d 4 way valve Y1S k Compressor M1C e Suction thermistor R3T l Expansion valve main Y1E f Low pressure switch S1PL m Compressor thermal protector g Refrigerant pressure sensor S1NPH n Service port ...

Page 341: ...eater kit i k 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 contactor K5M j Outlet water after backup heater thermistor R2T e Overcurrent fuse F1B k Backup heater f Terminal strip X15M ...

Page 342: ...6 Technical data Service manual 342 EBLA09 16DA EDLA09 16DA Daikin Altherma 3 M ESIE20 06A 2021 03 6 5 Field information report See next page ...

Page 343: ...ation 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 mail address Site address Your reference Date of visit Claim information Title Problem description Error code Trouble date Problem frequency Investigation steps done Insert picture of the trouble Current situat...

Page 344: ...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 temperature Space heating control leaving water temperature room thermostat external room thermostat Space heating setpoint Domestic hot water control reheat only schedule only reheat schedule Domestic hot water ...

Page 345: ...vice tools check the Business Portal http www mydaikin eu 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 available service tools for the different products is shown Also additional information on the service tools instruction latest software can be found here ...

Page 346: ...6 Technical data Service manual 346 EBLA09 16DA EDLA09 16DA Daikin Altherma 3 M ESIE20 06A 2021 03 6 7 Field settings See next page ...

Page 347: ...EBLA16DA3V3 EDLA09DAV3 EDLA11DAV3 EDLA14DAV3 EDLA16DAV3 EBLA09DAV3 EBLA11DAV3 EBLA14DAV3 EBLA16DAV3 EDLA09DA3W1 EDLA11DA3W1 EDLA14DA3W1 EDLA16DA3W1 EBLA09DA3W1 EBLA11DA3W1 EBLA14DA3W1 EBLA16DA3W1 EDLA09DAW1 EDLA11DAW1 EDLA14DAW1 EDLA16DAW1 EBLA09DAW1 EBLA11DAW1 EBLA14DAW1 EBLA16DAW1 Notes 1 V3 W1 2 3V3 3W1 3 EDLA 4 EBLA 4P627273 1 2020 09 ...

Page 348: ...nt Heating WD curve 3 5 0 00 R W 9 05 min 45 9 06 C step 1 C 25 C 3 5 0 01 R W 9 05 9 06 C step 1 C 35 C 3 5 0 02 R W 10 25 C step 1 C 15 C 3 5 0 03 R W 40 5 C step 1 C 10 C Cooling WD curve 3 6 0 04 R W 9 07 9 08 C step 1 C 18 C 3 6 0 05 R W 9 07 9 08 C step 1 C 22 C Field settings table Installer setting at variance with default value Room frost protection Room antifrost temperature Heating mini...

Page 349: ...4 C 2 increase 4 C span 4 C 3 increase 2 C span 8 C 4 increase 4 C span 8 C 4 B 9 04 R W 1 4 C step 1 C 4 C 4 C 2 06 R W 0 Disabled 1 Enabled Tank 5 2 6 0A R W 30 6 0E C step 1 C 50 C 5 3 6 0B R W 30 min 50 6 0E C step 1 C 45 C 5 4 6 0C R W 30 min 50 6 0E C step 1 C 45 C 5 6 6 0D R W 0 Reheat only 1 Reheat sched 2 Scheduled only Disinfection 5 7 1 2 01 R W 0 No 1 Yes 5 7 2 2 00 R W 0 Each day 1 Mo...

Page 350: ... 1 03 R W 9 01 min 45 9 00 C step 1 C 25 C 9 1 1 06 R W 10 25 C step 1 C 20 C 9 1 1 07 R W 25 43 C step 1 C 35 C 9 1 1 08 R W 9 03 9 02 C step 1 C 22 C 9 1 1 09 R W 9 03 9 02 C step 1 C 18 C Additional zone 9 1 2 0D R W 0 Underfloor heating 1 Fancoil unit 2 Radiator 9 1 R W 0 Fixed 1 WD heating fixed cooling 2 Weather dependent 9 1 R W 0 No 1 Yes 9 1 0 00 R W 9 05 min 45 9 06 C step 1 C 25 C 9 1 0...

Page 351: ...6 R W 0 Manual 1 Automatic normal SH DHW ON 2 Auto red SH DHW ON 3 Auto red SH DHW OFF 4 SH ON DHW OFF 9 5 2 7 06 R W 0 Disabled 1 Enabled Balancing 9 6 1 5 02 R W 0 Disabled 1 Enabled 9 6 2 5 03 R W 15 35 C step 1 C 0 C 9 6 3 5 04 R W 0 20 C step 1 C 10 C 9 6 4 8 02 R W 0 10 hour step 0 5 hour 3 hour 9 6 5 8 00 R W 0 20 min step 1 min 1 min 9 6 6 8 01 R W 5 95 min step 5 min 30 min 9 6 7 8 04 R W...

Page 352: ... Very low 9 C 3 C 03 R W 25 25 C step 1 C 0 C 9 C 4 C 04 R W 2 10 C step 1 C 3 C Installer settings 9 D C 09 R W 0 Normally open 1 Normally closed 9 E 3 00 R W 0 No 1 Yes 9 F E 08 R W 0 Disabled 1 Enabled 9 G R W 0 No 1 Yes Overview field settings 9 I 0 00 R W 9 05 min 45 9 06 C step 1 C 25 C 9 I 0 01 R W 9 05 9 06 C step 1 C 35 C 9 I 0 02 R W 10 25 C step 1 C 15 C 9 I 0 03 R W 40 5 C step 1 C 10 ...

Page 353: ...ow ambient temp for DHW WD curve High ambient temp for DHW WD curve Low ambient temp for DHW WD curve Low ambient temp for LWT main zone heating WD curve High ambient temp for LWT main zone heating WD curve Leaving water value for low ambient temp for LWT main zone heating WD curve Leaving water value for high ambient temp for LWT main zone heating WD curve Weather dependent cooling of the main le...

Page 354: ...1 C 60 C E 07 0 40 80 C step 1 C 60 C E 07 5 9 I 7 00 R W 0 4 C step 1 C 0 C 9 I 7 01 R W 2 40 C step 1 C 2 C 9 I 7 02 R W 0 1 LWT zone 1 2 LWT zones 9 I 7 03 2 5 9 I 7 04 0 Below which outdoor temperature is heating allowed Operation permission of the booster heater Water pipe freeze prevention Emergency Which power limitation mode is required on the system Which power limitation type is required...

Page 355: ...tdoor sensor 2 Room sensor 9 I C 09 R W 0 Normally open 1 Normally closed 9 I C 0A 0 9 I C 0B 0 9 I C 0C 0 9 I C 0D 0 9 I C 0E 0 Boiler efficiency HP Forced OFF BBR16 activation Minimum running time for domestic hot water operation Maximum running time for domestic hot water operation Anti recycling time Booster heater delay timer Additional running time for the maximum running time Allow modulati...

Page 356: ... 0 9 I F 00 R W 0 Disabled 1 Enabled 9 I F 01 R W 10 35 C step 1 C 20 C 9 I F 02 R W 3 10 C step 1 C 3 C 9 I F 03 R W 2 5 C step 1 C 5 C 9 I F 04 R O 0 9 I F 05 0 9 I F 09 R W 0 Disabled 1 Enabled 9 I F 0A 0 9 I F 0B 0 9 I F 0C 1 9 I F 0D R W 0 Continuous 1 Sample 2 Request Which heaters are permitted if prefer kWh rate PS is cut Contact type of preferential kWh rate PS installation Which type of ...

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