service manual - nibe

Service manual

LEK

F1245

SEM GB 1220-1M11319

Table of Contents1 Important information 2

Document information 2

Safety information 2

2 The heat pump design 4General 4

Electrical cabinets 6

Cooling section 8

3 System description 9Principle of operation 9

System diagram 12

4 Component description 15Compressor (GQ10) 15

Other components 15

Sensors 18

5 Troubleshooting 19Alarm list 19

Troubleshooting guide 26

Function check, relays/components 37

6 Component replacement 40Basic 40

Main components 43

Circuit board and electronics 54

Sensors 58

7 Technical data 59Electrical circuit diagram 59

Dimensions and setting-out coordinates 87

Technical specifications 88

Item register 94

1Table of Contents |F1245

Document informationThis technical manual is a complement to the Installerhandbook for F1245, containing:

Description of functions and component description.

Information to facilitate fault-tracing.

Instructions for replacing components.

Supplementary technical information.

The document applies to heat pumps with software ver-sions from 1199 up to and including 1768.

The heat pump software version can be found in the infomenu (menu 3.1).

Safety informationThis manual describes installation and service proceduresfor implementation by specialists.

This appliance is not intended for use by persons (includ-ing children) with reduced physical, sensory or mentalcapabilities, or lack of experience and knowledge, unlessthey have been given supervision or instruction concern-ing use of the appliance by a person responsible for theirsafety.Children should be supervised to ensure that they do notplay with the appliance.Rights to make any design or technical modifications arereserved.©NIBE 2012.

Symbols

NOTE

This symbol indicates danger to machine orperson.

Caution

This symbol indicates important informationabout what you should observe when maintain-ing your installation.

TIP

This symbol indicates tips on how to facilitateusing the product.

Marking

F1245 is CE marked and fulfils IP21.

The CE marking means that NIBE ensures that the productmeets all regulations that are placed on it based on relev-ant EU directives. The CE mark is obligatory for mostproducts sold in the EU, regardless where they are made.

IP21 means that the product can be touched by hand,that objects with a diameter larger than or equivalent to12.5 mm cannot penetrate and cause damage and thatthe product is protected against vertically falling drops.

Serial number

The serial number can be found at the bottom right ofthe front cover and in the info menu (menu 3.1).

Caution

Always give the product's serial number (14 di-gits) when reporting a fault.

F1245Chapter 1 | Important information2

1 Important information

Contact informationKNV Energietechnik GmbH, Gahberggasse 11, 4861 SchörflingAT

Tel: +43 (0)7662 8963-0 Fax: +43 (0)7662 8963-44 E-mail: [email protected] www.knv.atNIBE Wärmetechnik AG, Winterthurerstrasse 710, CH-8247 FlurlingenCH

Tel: (52) 647 00 30 Fax: (52) 647 00 31 E-mail: [email protected] www.nibe.chDruzstevni zavody Drazice s.r.o, Drazice 69, CZ - 294 71 Benatky nad JizerouCZ

Tel: +420 326 373 801 Fax: +420 326 373 803 E-mail: [email protected] www.nibe.czNIBE Systemtechnik GmbH, Am Reiherpfahl 3, 29223 CelleDE

Tel: 05141/7546-0 Fax: 05141/7546-99 E-mail: [email protected] www.nibe.deVølund Varmeteknik A/S, Member of the Nibe Group, Brogårdsvej 7, 6920 VidebækDK

Tel: 97 17 20 33 Fax: 97 17 29 33 E-mail: [email protected] www.volundvt.dkNIBE Energy Systems OY, Juurakkotie 3, 01510 VantaaFI

Puh: 09-274 697 0 Fax: 09-274 697 40 E-mail: [email protected] www.nibe.fiAIT France, Parc d'activités économique "Les Couturiers",16 rue des couturières, 67240 BischwillerFR

Tel : 03 88 06 24 10 Fax : 03 88 06 24 11 E-mail: [email protected] www.nibe.frNIBE Energy Systems Ltd, 3C Broom Business Park, Bridge Way, Chesterfield S41 9QGGB

Tel: 0845 095 1200 Fax: 0845 095 1201 E-mail: [email protected] www.nibe.co.ukNIBE Energietechniek B.V., Postbus 2, NL-4797 ZG WILLEMSTAD (NB)NL

Tel: 0168 477722 Fax: 0168 476998 E-mail: [email protected] www.nibenl.nlABK AS, Brobekkveien 80, 0582 Oslo, Postadresse: Postboks 64 Vollebekk, 0516 OsloNO

Tel. sentralbord: +47 02320 E-mail: [email protected] www.nibeenergysystems.noNIBE-BIAWAR Sp. z o. o. Aleja Jana Pawła II 57, 15-703 BIAŁYSTOKPL

Tel: 085 662 84 90 Fax: 085 662 84 14 E-mail: [email protected] www.biawar.com.pl© "EVAN" 17, per. Boynovskiy, Nizhny NovgorodRU

Tel./fax +7 831 419 57 06 E-mail: [email protected] www.nibe-evan.ruNIBE AB Sweden, Box 14, Hannabadsvägen 5, SE-285 21 MarkarydSE

Tel: +46-(0)433-73 000 Fax: +46-(0)433-73 190 E-mail: [email protected] www.nibe.se

For countries not mention in this list, please contact NibeSweden or check www.nibe.eu for more information.

3Chapter 1 | Important informationF1245

General

View from above

View from behind

F1245Chapter 2 | The heat pump design4

2 The heat pump design

Pipe connectionsConnection, heating medium flowXL 1Connection, heating medium returnXL 2Connection, cold waterXL 3Connection, hot waterXL 4Connection, HWC*XL 5Connection, brine inXL 6Connection, brine outXL 7

* Only applies to enamelled or stainless steel vessels.

HVAC componentsVenting, coilQM 22Shut off valve, heating medium returnQM 32Shut off valve, brine outQM 33Shut-off valve, brine inQM 34Shuttle valve, climate system/water heaterQN 10Pipe connection, heating medium flowWP 4

Sensors etc.Flow meter (only for Germany, Switzerland andAustria)

BF 1

Outside sensorBT 1Temperature sensors, heating medium flowBT 2Temperature sensor, hot water chargingBT 6Temperature sensor, hot water topBT 7

Electrical componentsDisplay unitAA 4

AA4-XJ3 USB outlet (no function)

AA4-XJ4 Service outlet (No function)Immersion heaterEB 1Sacrificial anode*FR 1SwitchSF 1

* Only heat pump with enamelled vessel.

MiscellaneousRating platePF 1Type plate, cooling sectionPF 2Serial number platePF 3Cable gland, incoming electricityUB 1Cable glandUB 2Cable gland, rear side, sensorUB 3

Designations in component locations according tostandard IEC 81346-1 and 81346-2.

5Chapter 2 | The heat pump designF1245

Electrical cabinets

Electrical componentsImmersion heater cardAA 1Base cardAA 2Input circuit boardAA 3Sacrificial anode card*AA 8Miniature circuit-breakerFA 1Motor cut-out**FB 1Temperature limiter/Emergency mode thermostatFD 1

* Only heat pump with enamelled vessel.

** 1x230 V, 3x230 V 6-10 kW, 3x400V 5 kW has auxiliaryswitch for motor cut-out.



1x230 V 5-12 kW

3x400 V 5 kW

3x400 V 6-12 kW

3x230 V 6-8 kW

3x230 V 10 kW

3x230 V 12 kW

Electrical componentsSoft-start cardAA 10Phase sequence monitor (3-phase)BE 4CapacitorCA 1Motor cut-out**FB 1Contactor, compressorQA 10Soft-starterQA 30Suppression capacitorRF 1Terminal blockX 301Terminal blockX 302

** 1x230 V, 3x230 V 6-10 kW, 3x400V 5 kW has auxiliaryswitch for motor cut-out.


7Chapter 2 | The heat pump designF1245

Cooling section

Pipe connectionsService connection, high pressureXL 20Service connection, low pressureXL 21

HVAC componentsCirculation pumpGP 1Brine pumpGP 2Drainage, climate systemQM 1Draining, brine sideQM 2

Sensors etc.High pressure pressostatBP 1Low pressure pressostatBP 2Temperature sensors, heating medium returnBT 3Temperature sensor, brine inBT 10Temperature sensor, brine outBT 11Temperature sensor, condenser supply lineBT 12Temperature sensor, hot gasBT 14Temperature sensor, fluid pipeBT 15Temperature sensor, suction gasBT 17

Electrical componentsJoint cardAA 100Compressor heaterEB 10

Cooling componentsEvaporatorEP 1CondenserEP 2CompressorGQ 10Drying filterHS 1Expansion valveQN 1



Principle of operation

XL1 XL6 XL7XL4 XL3 XL2

BT2

BT6

BT10

BT7

BT3

BT12

BT14

BP2

BT17

GQ10

GP2

GP1

EB1

QN10

EP2

EP1

WP4

QM34QM33

QM32

BT11BT15 BP1 QN1

List of components

Pipe connectionsConnection, heating medium flowXL 1Connection, heating medium returnXL 2Connection, cold waterXL 3Connection, hot waterXL 4Connection, brine inXL 6Connection, brine outXL 7

Cooling componentsEvaporatorEP 1CondenserEP 2CompressorGQ 10Expansion valveQN 1

HVAC componentsCirculation pumpGP 1Brine pumpGP 2Shut off valve, heating medium returnQM 32Shut off valve, brine outQM 33Shut-off valve, brine inQM 34Shuttle valve, climate system/water heaterQN 10

Pipe connection, heating medium flowWP 4

9Chapter 3 | System descriptionF1245

3 System description

Sensors etc.

Internal

FunctionLocationName

Protects the compressor against pres-sures that are too high.

On the liquid line.High pressure pressostatBP1

Protects the compressor against pres-sures that are too low.

On suction gas line.Low pressure pressostatBP2

Set point values for heating and coolingdemand calculation. Operating modechange.

Outdoor, shaded location on north sideof the house.

Outside sensorBT1*

Calculation of DM. If BT25 is installed,only view.

On flow line after immersion heater(EB1).

Flow pipeBT2

Stopping the compressor at high temper-ature.

On return line between circulation pump(GP1) and condenser (EP2).

Return pipeBT3

Stop and start of hot water charging.On water heater lower section.Hot water, chargingBT6

View.At water heater peak.Hot water, topBT7

View.On incoming brine line before circulationpump (GP2).

Brine inBT10

Stopping the compressor at low temper-ature.

On outgoing brine line after evaporator(EP1).

Brine outBT11


On flow line between condenser (EP2)and immersion heater (EB1).

Condenser flow lineBT12


On hot gas line after compressor (GQ10).DischargeBT14

View.On the liquid line after the condenser(EP2).

Fluid pipeBT15

View.On suction gas line before the com-pressor (GQ10).

Suction gasBT17

Calculation of DM. Actual value for addi-tional heat mixing valve.

Externally on the flow line to the heatingsystem.

External flow lineBT25*

Correction of the indoor temperature.In suitable indoor location.Room sensorBT50*

* Externally mounted (not included in outline diagram).

External


Stop and start of pool charging.On pool water pipe in heat exchanger.Pool sensorCL11-BT51

In relation to BT54, stop and start ofsolar charging.

On the solar panelSolar panel sensorEP30-BT53

In relation to BT53, stop and start ofsolar charging.

On solar tank bottomSolar tank, bottomEP30-BT54

Closes additional heat mixing valve whenboiler is cold.

In additional heat boilerBoiler sensorEM1-BT52

F1245Chapter 3 | System description10


Actual value for mixing valve cooling(EQ1-QN18)

On flow line, coolingFlow line, coolingEQ1-BT64

ViewOn return line, coolingReturn line, coolingEQ1-BT65

Actual value for mixing valve, climatesystem 2.

On flow line to extra climate system 2.Flow line, extra climatesystem

EP21-BT2

View.On return line from extra climate system2.

Return line, extra climatesystem

EP21-BT3



EP22-BT2



EP22-BT3



EP23-BT2



EP23-BT3

View.In exhaust air in FLM.Exhaust airAZ1-BT20

Controls defrostingIn extract air in FLM.Extract airAZ1-BT21

View.On incoming collector line in FLM.Collector inAZ1-BT26

View.On outgoing collector line in FLM.Collector outAZ1-BT27


System diagramHeating

-FL3

-QM42

-QM12

-CM2

-QM34

-XL15

-BT1

-QM31

-QM32-HQ1

F1245

-EP100

-FL2

-CM1

-EP12

Function

The heat pump prioritises hot water charging. The circulation pump GP1 operates at the fixed set speed. When theheater is fully charged QN10 switches to the heating system. The heat pump works to a calculated set point value onthe flow line. If the compressor cannot meet the whole heating requirement, additional heat is shunted in as necessary.

TIP

More system principles are on www.nibe.eu.

Refer to the Installer manual for description ofpossible docking alternatives.


Installation requirements

Heating medium side1x230 V

12 kW8 kW5 kW

4BarMax system pressure

18012075lMin recommended volume heating system*

0.190.130.08l/sMin flow**

0.270.180.10l/sNominal flow

0.350.230.13l/sMax recommended flow

586468kPaMax external available pressure at nom flow***

See diagram page 93.°CMin/max temperature

3x230 V

12 kW10 kW8 kW6 kW



0.190.160.130.10l/sMin flow**

0.270.220.180.13l/sNominal flow

0.350.290.230.17l/sMax recommended flow



3x400 V

12 kW10 kW8 kW6 kW5 kW



0.190.160.130.100.08l/sMin flow**

0.270.220.180.130.10l/sNominal flow

0.350.290.230.170.13l/sMax recommended flow



* min volume refers to circulating flow

** overflow valve must be used if min flow cannot be guaranteed

*** external circulation pump must be used when the pressure drop in the system is greater than the available externalpressure. In such cases, a bypass line with non-return valve must be installed.


Brine side1x230 V

12 kW8 kW5 kW


0.470.330.19l/sMin flow

0.650.420.23l/sNominal flow

694862kPaMax external available pressure at nom flow

See diagram page 93.°CMax/min incoming temperature

-10°CMin outgoing temperature

3x230 V

12 kW10 kW8 kW6 kW


0.470.400.330.25l/sMin flow

0.650.510.420.30l/sNominal flow




3x400 V

12 kW10 kW8 kW6 kW5 kW


0.470.400.330.250.19l/sMin flow

0.650.510.420.300.23l/sNominal flow





Compressor (GQ10)1 x 230 V

Resistance range ( at 20 °C +/- 10 %)TypeSize

T2-T3[S-R]T1-T2[C-S]T1-T3[C-R]

5.884.181.7Piston5

3.012.070.94Piston8

2.501.900.60Scroll12

3 x 230 VResistance range ( at 20 °C +/- 10 %)TypeSize


5.884.181.7Piston5

1.361.361.36Piston6

1.131.131.13Piston8

0.930.930.93Piston10

1.121.121.12Scroll12

3 x 400 VResistance range ( at 20 °C +/- 10 %)TypeSize


5.884.181.7Piston5

5.195.195.19Piston6

3.563.563.56Piston8

3.593.593.59Piston10

3.643.643.64Scroll12

Other componentsDescriptionComponent

1x230 V and 3x400 VImmersion heater(EB1) White coil (1/3 kW), internal resistance: 55 ohm

Brown coils (3 x 2 kW), internal resistance: 27 ohm

3x230 V

White coil (3 kW), internal resistance 18 ohm

Red coil (2 kW), internal resistance 27 ohm

Brown coil (2 kW), internal resistance 27 ohm

Black coil (2 kW), internal resistance 27 ohm

15Chapter 4 | Component descriptionF1245

4 Component description

DescriptionComponent

Actuator motor: 7 VA, 230/24 VAC, 50 Hz, IP 40. Running time approx 8 secondsReversing valve(QN10) Max. operating pressure: 1.0 MPa

Operating temperature: 5 - 80 °C (90 °C briefly)

56 56Ø28

30

54106

142

Ø28

Max flow: 3.5 m3/hHeating mediumpump (GP1) Max lift height: 7.5 m

Control signal: PWM 0-10 V DC (max-min speed)

18

0

26 11048 85

Ø28

F1245Chapter 4 | Component description16

DescriptionComponent

5 - 8 kWBrine pump (GP2)

Max flow: 5 m3/h

Max lift height: 8.5 m


94138

19

13

2

61

80

0

106

143

18

0

G1 1/2

10 - 12 kW

Max flow: 12 m3/h

Max lift height: 10 m


Max. 20

84 ±6

61

54207

G1 1/2

87

17

31

80

Breaking value: 29 barHigh pressure switch(BP1) Reconnection differential: -7 bar

Breaking value: 1.5 barLow pressure switch(BP2) Reconnection differential: 1.5 bar

Output (5-10): 30 WCompressor heater

Output (12-17): 40 W

17Chapter 4 | Component descriptionF1245

SensorsTemperature sensor data

Voltage (VDC)Resistance(kOhm)

Temperature(°C)

3.256351.0-403.240251.6-353.218182.5-303.189133.8-253.15099.22-203.10574.32-153.04756.20-102.97642.89-52.88933.0202.78925.6152.67320.02102.54115.77152.39912.51202.24510.00252.0838.045301.9166.514351.7525.306401.5874.348451.4263.583501.2782.968551.1362.467601.0072.068650.8911.739700.7851.469750.6911.246800.6071.061850.5330.908900.4690.779950.4140.6721000.2500.3801200.1200.180150

F1245Chapter 4 | Component description18

Alarm listA-alarm

In event of an A alarm the red lamp on the front lightsand an alarm icon is displayed. First go through the sug-gested actions shown in the display.

Repairers actionHeat pump action.CauseAlarm text onthe display

Alarmno.

See fault-tracing schedule page26.

Calculated supply temp is set tomin supply.

Sensor not connected/defective

(outdoor sensor).

Sensor fault BT11


Additional heat is blocked. DMcalculated using the condenserout sensor. If condenser outsensor is also missing heating isblocked


(heating medium supply).

Sensor fault BT22


Compressor blocked during hotwater charging.


(heating medium return).

Sensor fault BT33


Compressor blocked.Sensor not connected/defective

(brine out).

Sensor faultBT11

11


Flow line sensor (BT2) is used forcontrolling max condenser outfor the compressor. If the flowline sensor is also missing heat-ing operation is blocked and thecompressor is blocked in hotwater mode.


(condenser flow).

Sensor faultBT12

12


Circulation pump (AZ1-GP2) inFLM is blocked.


(exhaust air).

Sensor fault AZ1-BT20

20




(extract air).


21


When docking with mixing valvecontrolled external addition themixing valve is closed and degreeminutes calculated on BT2.


(heating medium flow, extern-al).

Sensor faultBT25

25




(brine, collector in).


26


Solar accessory is blocked.Sensor not connected/defective

(solar panels).

Sensor faultEP30-BT53

33


Solar accessory is blocked.Sensor not connected/defective

(solar coil)

Sensor faultEP30-BT54

34


Shunt closes. Burner stops.Sensor not connected/defective

(boiler).

Sensor faultEM1-BT52

35


Controls the return sensor (EP21-BT3).


(flow line sensor, heating sys-tem 2)

Sensor faultEP21_BT2

36

19Chapter 5 | TroubleshootingF1245

5 Troubleshooting


Alarmno.






37






38


Cooling blocked. Cooling shuntcloses.


(cooling, flow line).

Sensor fault EQ1-BT64

39

- Reset the phases.Compressor blocked.The compressor phase men-tioned has been below 160 Vfor 30 min.

Compressorphase 1 missing

40


41


42

- Reconnect the phase order ofthe incoming electricity.

Compressor blocked.The phases are connected inthe wrong order.

Incorrect phasesequence

43


Compressor blocked.The high pressure switch hasdeployed 2 times within 150minutes or has been deployedfor 300 minutes continuously.

High pressurealarm

50


Compressor blocked.Low pressure switch hastripped. The alarm is blockedfor 1 minute at each switchbetween operating modes.

Low pressurealarm

51


Internal electrical addition isblocked.

Temperature limiter has trippedTemperature lim-iter

52

Fill up and seal off any leakagein the collector circuit

Compressor and brine pumpblocked.

Brine level switch/ pressureswitch has tripped.

Level monitor53


Compressor blocked.The motor protection breakerhas tripped.

Motor protection54

- Call qualified refrigerationtechnician.

Compressor blocked.The compressor has beenstopped 3 times in 240 minbecause the hot gas has ex-ceeded 135°C for 20 mins ortemporarily exceeded 150°°C.

Hot gas alarm55

Bad circulation in the brine cir-cuit.- Check the brine pump.- Check that the brine is bled.- Check the brine’s freezingpoint.

Compressor blocked.The temperature of the outgo-ing brine goes below the setmin-temperature and the alarmis selected to be permanent.

Low HTFout60


Calculated flow is set to minflow.

Communication with the inputcard missing for 60 secs.

Perm. Com. errorinput card

70

F1245Chapter 5 | Troubleshooting20


Alarmno.


Compressor blocked.Communication with the basecard missing for 15 secs.

Perm. Com. errorbase card

71


Compressor blocked.Communication with the soft-start card missing for 15 secs.

Perm. com. faultsoft-start card

72

- Check the communicationcables.

Accessory is blocked.Communication with the access-ory card missing for 15 secs.

Perm. com. fault"accessory"

73-95

- Check the setting of thedipswitch.

- Check the communicationcables.

Room unit is blocked.Communication with the roomunit missing for 15 secs.

Perm. com."room unit"

96-99


B alarm

In the event of a B alarm the green light shows on thefront and a symbol with a service technician is displayed

in the information window until the alarm is reset. Allalarms are automatically reset if the cause is rectified.These alarms are so called information alarms and arenot registered in the alarm log.

Repairer actionHeat pump action.CauseAlarm text onthe display

Alarmno.

Check any sensors and connec-tions.

Only informationSensor temporarily missingSensor fault BT1101

See also the fault tracing sched-ule for alarm 1




















Only informationSensor temporarily missingSensor faultBT10

110



111




112




113



114



Alarmno.



115



116



117



118



119



120


Any check ofOnly informationCompressor phase 1 has beenbriefly missing.


140

- phase fuse

- Cable connections

Any check ofOnly informationCompressor phase 2 has beenbriefly missing.


141

- phase fuse

- Cable connections

Any check ofCompressor phase 3 has beenbriefly missing.


142

- phase fuse

- Cable connections

Any check ofTemporary problem with thecommunication from the basecard to the motor protection

Temporary gener-al phase fault

145

- Communications cables.

No action necessaryHigh pressure switch hastripped once

Temporary HPalarm

150

Any check of settingsReset automatically when thetemp has the power step xC

Brine out has reached set mintemperature

Low HTFout160

Any check of settingsResets automatically when thetemp has fallen xC

Brine in has reached set maxtemperature.

High HTFin161


Condenser out has reachedmax permitted temperature

High condenserout

162


Condenser in has reached maxpermitted temperature

High condenserin

163

Exhaust air temperature hasreached permitted min temper-ature

Low exhaust airtemperature

164

Fault in the electrical anodeElectrical anodeincorrect

166



Alarmno.

Check anyOnly informationCommunication with the inputcard is temporarily missing.

Com. error inputcard

170

- Communication cables andconnections

Check anyOnly informationCommunication with the basecard is temporarily missing.

Com. error basecard

171


Check anyOnly informationCommunication with the soft-start card is temporarily miss-ing.

Com. error soft-start card

172


Check anyOnly informationCommunication with accessorycard for climate system 2 tem-porarily missing

Com. error heat-ing system2

173




174


Check anyOnly informationThe soft-start card is started up.Takes approx 20secs

Start-up of soft-start card

175




176


Check anyOnly informationCommunication with accessorycard for mixing valve controlledadditional heat temporarilymissing

Com. error addi-tion with mixingvalve

177


Check anyOnly informationCommunication with accessorycard for pool temporarily miss-ing

Com. error pool178


Check anyOnly informationCommunication with the access-ory FLM is temporarily missing.

Com. error FLM179


Check operating settingsPermits room heatingFreeze protection active. Occursif the outdoor temperature isbelow 3 degrees and no heat-ing is permitted

Freeze prot180

Check any operating settingsOnly informationPeriodic increase did not reachthe stop temperature in 5hours.

Unsuccessfulperiodic increase

181

Check the phase load. It may re-quire a larger main fuse

Only informationOne or more power steps can-not be activated because thecurrent in at least one phase istoo high

Load monitor ac-tivated

182



Alarmno.

No actionOnly informationDefrosting in progressDefrosting183

Air filter needs cleaningFilter alarm184

Check anyOnly informationTemporary communicationfault with accessory card withstep controlled additional heat

Com. error stepcontrolled addi-tional heat

187


Check anyOnly informationTemporary communicationfault with accessory card withsolar

Com.fault solar188


Check anyOnly informationTemporary communicationfault with accessory card withHPAC

Com. error HPAC189


Check anyOnly informationTemporary communicationfault with accessory card withground water pump

Com. errorground waterpump

190


Check anyOnly informationTemporary communicationfault with accessory card withhot water circulation

Com. errorWWC

191


Check anyOnly informationTemporary communicationfault with accessory card with2 pipe cooling

Com. error 2pipe cooling

192


Check anyOnly informationTemporary communicationfault with accessory card with4 pipe cooling

Com. error PCD4194


Check anyOnly informationTemporary communicationfault with room unit zone 1

Comm. roomunit, zone 1

196




197




198




199



Troubleshooting guideAlarm 1, 25 – sensor fault


Alarm 2 – sensor fault


Alarm 3, 11, 12 – sensor fault


Alarm 20, 21, 26 – sensor fault

Fault-tracing in NIBE FLM


Alarm 33-39 – sensor fault

Fault-tracing in accessory card.


Alarm 50 – high pressure alarm


Alarm 51 – low pressure alarm

Alarm 52 – temperature limiter


Alarm 54 – motor protection

Alarm 70 - perm. com.error input card


Alarm 71 - perm. com.error input card


Alarm 72 - perm. com.error soft-start card


Alarm 73–95 - perm. com.error accessory card


Function check, relays/compon-entsRelay test - forced control

The heat pumps relay outputs can be force controlledfrom menu 5.6.

1. Tick "activated". Forced control is then activated for10 minutes.

2. Tick the outputs that you want to activate.

3. Check the relay/component function.

! WARNING!Forced control must only be used by users familiarwith the system. When forced control is activated,

the alarm functions are disabled.

Internal outputs

FunctionOutput

Compressor (GQ10)AA10

Reversing valve (QN10)AA2-K1

Brine pump (GP1)AA2-K2

Heating medium pump (GP2)AA2-K3

Compressor relayAA2-K4

Immersion heater 2 kWAA1-K4

No functionAA1-K5


Immersion heater 3 kW on K9AA1-K7


Immersion heater 1/3 kWAA1-K9

Climate system 2 (ECS 40)

FunctionOutput

Mixing valve, closeEP21-AA5-K2

Mixing valve, openEP21-AA5-K3

External circulation pumpEP21-AA5-K4


FunctionOutput





FunctionOutput




Mixing valve controlled additional heat (AXC 40)

FunctionOutput

External addition (burner) permittedEM1-AA5-K1

Mixing valve, closeEM1-AA5-K2

Mixing valve, openEM1-AA5-K3

External circulation pumpEM1-AA5-K4

Pool (POOL 40)

FunctionOutput

External circulation pumpCL11-A5-K1

Pool reversing valveCL11-A5-K3

Pool pumpCL11-A5-K4

Exhaust air module (FLM)

FunctionOutput

Fan (relay)EP16-AA5-K3

HTF pump FLMEP16-AA5-K4

Groundwater pump (AXC 40)

FunctionOutput

Groundwater pumpEP12-AA5-K4

Hot water circulation (AXC 40)

FunctionOutput

HWC pumpGP11-AA5-K4


Passive cooling 2-pipe (PCM40/PCM42)

FunctionOutput

Circulation pumpEQ1-AA5-K1

Mixing valve, closeEQ1-AA5-K2

Mixing valve, openEQ1-AA5-K3

Shuttle valveEQ1-AA5-K4

Passive cooling 4-pipe (PCS44)

FunctionOutput

Circulation pump cooling (GP13)EQ1-AA5-K1

Mixing valve (QN18), closeEQ1-AA5-K2

Mixing valve (QN18), openEQ1-AA5-K3

Passive/active cooling (HPAC)

FunctionOutput

ACEQ1-AA5-K1

PCEQ1-AA5-K2

External circulation pumpEQ1-AA5-K4

Step controlled additional heat (AXC 40)

FunctionOutput

Step 1EB1-AA5-K1

Step 2EB1-AA5-K2

Step 3EB1-AA5-K3

Solar control (SOLAR 40)

FunctionOutput

Circulation pump, solar coil (GP4)EP8-AA5-K1

CoolingEP8-AA5-K2

Reversing valve HW/heatingEP8-AA5-K3

Function check, circulation pumps

With forced control of the heating medium pump (GP1)or the brine pump (GP2) it can be necessary to check thesupply (230 V AC) and the control signal (0-10 V DC) tothe circulation pump.

Heating medium pump (GP1) Grundfos

LED PWM1 onCard AA2

PVM1, X2:1-2Pump speedGP1

Not litapprox 0 V DC100 %

Half litapprox 5 V DC50 %

Litapprox 10 V DC0 %

Brine pump (GP2) Grundfos

LED PWM2 onCard AA2

PVM2, X2:3-4Pump speedGP2

Not litapprox 0 V DC100 %

Half litapprox 5 V DC50 %

Litapprox 10 V DC0 %


Test for reversing valve cooling (onlyF1X45PC)1. Select manual mode, cooling in menu 4.2. (Untick

the addition and heating)

2. Reduce the time between cooling and heating to 0in menu 1.9.5.

3. Check that the flow temperature in menu 3.1, tab2 falls during cooling operation after approx 1minute, the mixing valve is open in cooling mode.

4. Cooling medium temperature out in menu 3.1, tab1 must rise during cooling operation.

5. If points 3 and 4 correspond, remove the mixing valvemotor to see if the spindle is as illustrated below.

6. Select manual mode, cooling in menu 4.2, untickcooling and tick addition and heating.

7. Check that the flow temperature in menu 3.1, tab2 rises during heating operation after a few minutes.Cooling medium temperature in menu 3.1, tab 1must not rise during heating operation. The mixingvalve is open to heating mode.

MONTERA VENTILENI DETTA LÄGE

MONTERA MOTORNI DETTA LÄGE

SKRUVEN DRAS MED 0,8Nm


NOTE

Servicing should only be carried out by personswith the necessary expertise.

Cut the current with the circuit breaker beforecarrying out any servicing.

F1245 can contain liquids at high temperatureand under high pressure.

When replacing components on F1245 only re-placement parts from NIBE may be used.

An ESD bracelet must be worn when replacingthe card.

BasicRemoving the covers

Front cover

1

2

LE

K

LE

K

1. Remove the screws from the lower edge of the frontcover.

2. Lift the cover out at the bottom edge and up.

Side covers

LE

K

LE

K

LE

K

The side covers can be removed to facilitate the installa-tion.

1. Remove the screws from the upper and lower edges.

2. Twist the cover slightly outward.

3. Move the cover backwards and slightly to the side.

4. Pull the cover to one side.

5. Pull the cover forwards.

Pulling out the cooling moduleThe cooling module can be pulled out for service andtransport.

Caution

Drain the cooling module according to IHB tofacilitate lifting.

Weight of the cooling module

Weight (kg)Type (kW)

1105115612581301013512

NOTE

Shut off the heat pump and turn off the currenton the safety breaker.

Caution

Remove the front cover according to the descrip-tion on page 40.

Close the shut-off valves (QM32), (QM33) and(QM34).

1

Drain the cooling module according to IHB.

Pull off the lock catches.2

LEK

F1245Chapter 6 | Component replacement40

6 Component replacement

Disconnect the pipe connection at the pipe coupling(WP4).

3

Remove the two screws.4

LEK

Remove the connections from the base card (AA2)using a screwdriver.

5

LEK

Disconnect the connectors (A) and (B) from the un-derside of the base card cabinet.

6

Disconnect the connector (C) from the immersionheater circuit board (AA1) using a screwdriver.

7

Disconnect the connector (D) from the joint circuitboard (AA100).

8

Carefully pull out the cooling module.9

LEK

TIP

The cooling module is installed in reverse order.

NOTE

At reinstallation, the supplied O-rings must re-place the existing ones at the connections to theheat pump (see image).

41Chapter 6 | Component replacementF1245

Accessibility, electrical connectionThe plastic cap of the electrical boxes is opened using ascrewdriver.

NOTE

The cover for the input card is opened withouta tool.

Removing the cover, input circuit board

LEK

1

2

1. Push the catch down.

2. Angle out the cover and remove it.

Removing the cover, immersion heater circuitboard

LEK

1

2

A

B

1. Insert the screwdriver (A) and pry the catch carefullydownwards (B).


Removing the cover, base board

Caution

To remove the cover for the base board, thecover for the input circuit board must first beremoved.

LEK

LEK

1

A

B

2

1. Disconnect the switches using a screwdriver.

2. Insert the screwdriver (A) and pry the catch carefullydownwards (B).



Main componentsCompressor (GQ10)1 Remove the cooling moduleaccording to the instructionon page 40.

2 Remove the motor moduleby inserting a screwdriver andcarefully lifting the catch as il-lustrated.

3 Slacken off 10 screws.

4 Remove the cover on thecooling module.


6 Remove the right/rear sidepanel on the cooling module.



8 Remove the left/rear sidepanel on the cooling module.

9 Unscrew the ground cable.

10 Disconnect the compressorcables.

11 Remove the 4 lockingplates holding the com-pressor.


12 Drain the cooling circuitand ensure that no refrigerantremains before you continue.

13 Disconnect the pipes forsuction gas and hot gas.

14 Remove the compressor.


Expansion valve (QN1)1 Remove the cooling moduleaccording to the instructionon page 40.

2 Remove the motor moduleby inserting a screwdriver andcarefully lifting the catch as il-lustrated.


4 Remove the cover on thecooling module.


6 Remove the right/rear sidepanel on the cooling module.


7 Drain the cooling circuit andensure that no refrigerant re-mains before you continue.

8 Slacken off the bulb for theexpansion valve.

9 Disconnect the pipes andremove the valve.


Immersion heater (EB11 Drain the heating mediumsystem.

2 Remove the plastic cap over(AA1) using a screwdriver.

3 Remove the insulation infront of the immersion heater.


4 Ensure that the heatpump is unpowered beforecontinuing.

5 Disconnect the 2 bluecables, the 2 white and the 3brown cables from the termin-al block X3 and X7 on (AA1).

6 Pull out the two bulbs fromthe immersion heater.

7 Disconnect the immersionheater at the marked coup-lings.

8 Remove the box for the im-mersion heater circuit board(AA1).

9 Remove the immersionheater.


Reversing valve (QN10)1 Drain the heating mediumsystem.

2 Remove the plastic cap over(AA1) using a screwdriver.

3 Remove the insulation.


4 Remove the switch on theactuator.

5 Remove the pin and removethe actuator.

6 Disconnect and remove thethree way valve.


Heating medium pump (GP1)1 Drain the heating mediumsystem.

2 Slacken off 2 x screws.

3 Remove the front hatch onthe cooling module.

4 Remove the switch on thecirculation pump.

5 Remove the switch for thecontrol cable on the circula-tion pump.

6 Disconnect and remove thecirculation pump.


Brine pump (GP2)1 Slacken off 2 x screws.

2 Remove the front hatch onthe cooling module.

3 Close the shut-off valves(QM33) and (QM34).

4 Drain the brine system.

5 Remove the switch on thecirculation pump.

6 Disconnect and remove thecirculation pump.


Circuit board and electronicsImmersion heater card (AA1)1 Remove the plastic cap over(AA1) using a screwdriver.

2 Disconnect the cables andscrews holding the card inposition.

3 Remove the immersionheater card (.AA1).


Base card (AA2)1 Remove the plastic coverover (AA3. See page 42.

2 Disconnect the two cablesthrough the cover in front of(AA2).

3 Remove the plastic coverover (AA2).


5 Remove the base card(AA2).


Input circuit board (AA3)1 Remove the plastic coverover (AA3. See page 42.


3 Remove the input card(AA3).


Display unit (AA4)1 Detach the cable from thelower edge of the display unit.

2 Press the catch on the upperrear side of the display unittowards you.

3 Remove the display unit.

Soft-start card (AA10)/Soft-start card (AA5)1 Remove the two screws inthe motor module.

2 Open the motor module.

3 Disconnect all cables.

4 Replace the card


Soft-start card (QA30)1 Remove the two screws inthe motor module.

2 Open the motor module.

3 Disconnect all cables.

4 Remove the soft-starter.

SensorsMounting

K

Install the temperature sensor with cable ties with theheat conducting paste and aluminium tape.

Then insulate with supplied insulation tape.

Location

See section Sensors etc. on page 10 and The heat pumpdesign on page 4 for sensor location.


Electrical circuit diagram1x230V 5-12 kW

59Chapter 7 | Technical dataF1245

7 Technical data

F1245Chapter 7 | Technical data60

3x230V 6-10 kW


3x230V 12 kW


3x400V 5 kW (F1245)


3x400V 6-12 kW (F1145/F1245)


Dimensions and setting-out coordinates

62

0

600

560 440

70

17

75

65

0*

25

-50

25

50

130

210

390

470

525

65

0*

* This dimension applies at 90° angle on the brine pipes (side connection). The dimension can vary approx. ±100 mm inheight as the brine pipes partially consist of flexible pipes.


Technical specificationsIP 21

1x230V12851x230V

Output data at nom flow Refers to performance of heat pump excl. circulation pumps

0/3511.888.334.83kWRated output9.306.603.74kWCooling output2.581.731.09kWElectrical output4.604.824.44-COP

0/5011.257.803.85kWRated output7.905.542.62kWCooling output3.352.261.23kWElectrical output3.363.453.13-COP

Output data according to EN 145110/35

11.608.154.65kWRated output2.721.841.13kWElectrical output4.274.444.12-COPEN14511

0/4510.997.753.98kWRated output3.202.181.21kWElectrical output3.443.553.29-COPEN14511

1/2/3/4/5/6/7kWAdditional powerElectrical data

230V 50 HzRated voltage22.5159.5ArmsMax operating current, compressor

(Including Control system and Circulation pumps)403223ArmsStarting current

---ohmMax permitted impedance at connection point 1)

31(32)24(25)18(20)ArmsMax operating current heat pump incl. 1 – 2 kW immersion heater

(Recommended fuse rating)40(40)32(32)27(32)ArmsMax operating current heat pump incl. 3 – 4 kW immersion heater

(Recommended fuse rating)49(50)41(50)36(40)ArmsMax operating current heat pump incl. 5 – 6 kW immersion heater

(Recommended fuse rating)53(63)46(50)40(40)ArmsMax operating current heat pump including 7 kW immersion heater

(Recommended fuse rating)35 – 18530 – 8730 – 87WOutput, Brine pump

7 – 677 – 677 – 67WOutput, Heating medium pumpIP 21IP class

Refrigerant circuitR407CType of refrigerant

2.22.31.4kgVolume2.9 (29 bar)MPaCut-out value pressostat HP-0.7 (-7 bar)MPaDifference pressostat HP

0.15 (1.5 bar)MPaCut-out value pressostat LP0.15 (1.5 bar)MPaDifference pressostat LP


12851x230V

Brine circuitlow energyEnergy class Brine pump0.3 (3 bar)MPaMax system pressure brine

0.470.330.19l/sMin flow0.650.420.23l/sNominal flow694862kPaMax external avail. press at nom flow

see diagram°CMax/Min incoming Brine temp-10°CMin. outgoing brine temp.

Heating medium circuitlow energyEnergy class circ-pump0.4 (4 bar)MPaMax system pressure heating medium

0.190.130.08l/sMin flow0.270.180.10l/sNominal flow586468kPaMax external avail. press at nom flow

see diagram°CMax/Min heating medium temp434342dB(A)Noise output (LWA) according to EN 12102 at 0/35

282827dB(A)Sound pressure level (LPA) calculated values according to EN ISO 11203 at 0/35 and a distance of

1 m

Pipe connections28mmBrine ext diam. CU pipe

2822mmHeating medium ext diam. CU pipes22mmHot water connection external diam22mmCold water connection external diam

3x230V1210863x230V


0/3511.879.818.186.30kWRated output9.307.836.524.98kWCooling output2.571.981.661.32kWElectrical output4.624.954.924.77-COP

0/5011.378.266.785.03kWRated output7.955.894.833.52kWCooling output3.422.371.951.51kWElectrical output3.313.493.483.34-COP


11.749.467.866.05kWRated output2.772.151.751.38kWElectrical output4.244.404.504.39-COPEN14511

0/4511.278.476.995.14kWRated output3.332.341.921.49kWElectrical output3.393.623.633.45-COPEN14511

2/4/6/9kWAdditional powerElectrical data

230V 3NAC 50 HzRated voltage


1210863x230V

14.413.010.48.0ArmsMax operating current, compressor

(Including Control system and Circulation pumps)73.565.5(23)57(20.8)52(20.3)ArmsStarting current (with soft start)

----ohmMax permitted impedance at connection point 1)

24(25)22(25)20(20)17.5(20)ArmsMax operating current heat pump including 2 kW immersion heater

(Recommended fuse rating)30(32)28(32)26(32)24(25)ArmsMax operating current heat pump including 4 kW immersion heater



(Recommended fuse rating)35 – 18535 – 18530 – 8730 – 87WOutput, Brine pump

7 – 677 – 677 – 677 – 67WOutput, Heating medium pumpIP 21IP class

Refrigerant circuitR407CType of refrigerant

2.22.52.31.8kgVolume2.9 (29 bar)MPaCut-out value pressostat HP-0.7 (-7 bar)MPaDifference pressostat HP

0.15 (1.5 bar)MPaCut-out value pressostat LP0.15 (1.5 bar)MPaDifference pressostat LP


0.470.390.330.25l/sMin flow0.650.510.420.30l/sNominal flow69854858kPaMax external avail. press at nom flow



0.190.160.130.10l/sMin flow0.270.220.180.13l/sNominal flow58646467kPaMax external avail. press at nom flow


28282827dB(A)Sound pressure level (LPA) calculated values according to EN ISO 11203 at 0/35 and

a distance of 1 m




3x400V12108653x400V


0/3511.829.958.306.314.83kWRated output9.357.976.645.033.74kWCooling output2.471.981.661.281.09kWElectrical output4.795.035.014.934.44-COP

0/5011.158.466.945.103.85kWRated output7.866.084.983.632.62kWCooling output3.292.381.961.481.23kWElectrical output3.393.393.543.463.13-COP


11.429.648.016.104.65kWRated output2.662.131.741.351.13kWElectrical output4.304.524.594.514.12-COPEN14511

0/4510.868.557.075.213.98kWRated output3.202.361.931.461.21kWElectrical output3.393.633.663.583.29-COPEN14511

1/2/3/4/5/6/7 (switchable to 2/4/6/9)kWAdditional powerElectrical data

400V 3NAC 50 HzRated voltage96.96.64.69.5(1-phase)ArmsMax operating current, compressor

(Including Control system and Circulation pumps)2923231823ArmsStarting current

-----ohmMax permitted impedance at connection point 1)

18(20)15(16)15(16)13(16)18(20)ArmsMax operating current heat pump incl. 1 – 2 kW immersionheater

(Recommended fuse rating)18(20)15(16)15(16)13(16)18(20)ArmsMax operating current heat pump incl. 3 – 4 kW immersion

heater

(Recommended fuse rating)18(20)15(16)15(16)13(16)18(20)ArmsMax operating current heat pump incl. 5 – 6 kW immersion

heater

(Recommended fuse rating)23(25)21(25)21(25)19(20)18(20)ArmsMax operating current heat pump including 7 kW immersion

heater, connected upon delivery

(Recommended fuse rating)24(25)22(25)22(25)19(20)24(25)ArmsMax operating current heat pump including 9 kW immersion

heater, requires switching

(Recommended fuse rating)35 – 18535 – 18530 – 8730 – 8730 – 87WOutput, Brine pump7 – 677 – 677 – 677 – 677 – 67WOutput, Heating medium pump

IP 21IP classRefrigerant circuit

R407CType of refrigerant2.22.52.31.81.4kgVolume

2.9 (29 bar)MPaCut-out value pressostat HP


12108653x400V

-0.7 (-7 bar)MPaDifference pressostat HP0.15 (1.5 bar)MPaCut-out value pressostat LP0.15 (1.5 bar)MPaDifference pressostat LP


0.470.400.330.250.19l/sMin flow0.650.510.420.300.23l/sNominal flow6985485862kPaMax external avail. press at nom flow



0.190.160.130.100.08l/sMin flow0.270.220.180.130.10l/sNominal flow5864646768kPaMax external avail. press at nom flow


2828282727dB(A)Sound pressure level (LPA) calculated values according to EN ISO 11203

at 0/35 and a distance of 1 m



Miscellaneous1210865Miscellaneous

Water heater180lVolume water heater

1.0 (10 bar)MPaMax pressure in water heaterCapacity hot water heating According to EN 255-3

185189192196197lTap volume 40 °C at Eco- comfort3.23.33.43.53.5COP at Eco comfort3030303030WIdle loss Eco comfort

210214218222224lTap volume 40 °C at Normal comfort3.03.13.13.23.2COP at Normal comfort3232323232WIdle loss Normal comfort

243248252257259lTap volume 40 °C at Lux comfort2.93.03.13.23.2COP at Lux comfort3434343434WIdle loss Lux comfort

Dimensions and weight600mmWidth620mmDepth

1800mmHeight1950mmRequired ceiling height 2)

335330325310305kgWeight complete heat pump135130125115110kgWeight only cooling module


1210865Miscellaneous

665 365-665 363-665 361Part no. 1x230V, Stainless steel665 345665 344665 343665 342-Part no. 3x230V, Stainless steel665 335665 334665 333665 332665 331Part number, 3x400V, Enamel (for Germany, Switzerland and

Austria only)665 305665 304665 303665 302-Part no., 3x400V, Enamel665 325665 324665 323665 322665 321Part no. 3x400V, Stainless steel665 285665 284665 283665 282665 281Part no. 3x400V, Copper

1)Max. permitted impedance in the mains connected point in accord-ance with EN 61000-3-11. Start currents can cause short voltagedips that could affect other equipment in unfavourable conditions.If the impedance in the mains connection point is higher than thatstated it is possible that interference will occur. If the impedance inthe mains connection point is higher than that stated check withthe power supplier before purchasing the equipment.2)With feet dismantled the height is approx. 1930 mm.

Working range heat pump, compressor oper-ationThe compressor provides a flow temperature up to 65°C, the remainder (up to 70 °C) is obtained using theadditional heat.

12 kW 3x400V, 8-12 kW 1x230V

0

10

20

30

40

50

60

70

-15 -10 -5 0 5 10 15 20 25 30 35

°Cp

°C

Other

0

10

20

30

40

50

60

70

-15 -10 -5 0 5 10 15 20 25 30 35

°Cp

°C


Item registerAAccessibility, electrical connection, 42

CContact information, 3Cooling section, 8

DDelivery and handling

Removing the covers, 40Dimensions and setting-out coordinates, 87Drawing out the cooling module, 40

EElectrical cabinets, 6Electrical connections

Accessibility, electrical connection, 42Removing the cover, base board, 42Removing the cover, immersion heater circuit board, 42Removing the hatch, input circuit board, 42

IImportant information

Safety information, 2

MMarking, 2

RRemoving the cover, base board, 42Removing the cover, immersion heater circuit board, 42Removing the covers, 40Removing the hatch, input circuit board, 42

SSafety information, 2

Contact information, 3Marking, 2Serial number, 2Symbols, 2

Serial number, 2Service actions

Drawing out the cooling module, 40Temperature sensor data, 18

Symbols, 2

TTechnical data, 87

Dimensions and setting-out coordinates, 87Technical Data, 88

Technical Data, 88Working range heat pump, 93

Temperature sensor data, 18The heat pump design, 4

Component list cooling section, 8Component list electrical cabinets, 6Component location cooling section, 8Component location electrical cabinets, 6Component locations, 4List of components, 4

WWorking range heat pump, 93

F1245Chapter 8 | Item register94

8 Item register

95Chapter 8 |F1245

F1245Chapter 8 |96

NIBE AB Sweden Hannabadsvägen 5Box 14 SE-285 21 [email protected]

service manual - nibe

Documents