Nibe F1245 Manuel utilisateur

Service manual

LEK

F1245

Ground source heat pump

SEM GB 1720-2

431504

Table of Contents

41 Important information

4Document information

4Safety information

52 The heat pump design

5The heat pump design

113 System description

11Principle of operation

15System diagram

184 Cooling circuit

18Outline diagram

18Compressor control

19Expansion valve

205 Component description

20Compressor (GQ10)

21Other components

24Sensors

24Electronics

276 Troubleshooting

27Alarm list

37Troubleshooting guide

48Function check, relays/components

517 Component replacement

51Basic

54Main components

65Circuit board and electronics

69Temperature sensor

708 Technical specifications

70Dimensions and setting-out coordinates

711x230V

723x230V

743x400 V

75Miscellaneous

Working range heat pump, compressor opera-

tion

77Item register

3Table of Contents |F1245

Document information

This technical manual is a complement to the Installer

handbook 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

version 7968R2.

The heat pump software version can be found in the info

menu (menu 3.1).

Safety information

This manual describes installation and service procedures

for implementation by specialists.

This appliance can be used by children

aged from 8 years and above and per-

sons with reduced physical, sensory or

mental capabilities or lack of experience

and knowledge if they have been given

supervision or instruction concerning use

of the appliance in a safe way and under-

stand the hazards involved. Children shall

not play with the appliance. Cleaning

and user maintenance shall not be made

by children without supervision.

Rights to make any design or technical

modifications are reserved.

©NIBE 2017.

Symbols

NOTE

This symbol indicates danger to person or ma-

chine .

Caution

This symbol indicates important information

about what you should observe when maintain-

ing your installation.

TIP

This symbol indicates tips on how to facilitate

using the product.

Marking

The CE mark is obligatory for most products sold

in the EU, regardless of where they are made.

Classification of enclosure of electro-technical

equipment.

IP21

Danger to person or machine.

Read the User Manual.

Serial number

The serial number can be found at the bottom right of

the front cover and in the info menu (menu 3.1).

Caution

You need the product's (14 digit) serial number

for servicing and support.

F1245Chapter 1 | Important information4

1 Important information

The heat pump design

General

F1245

BT7

QN10

BT2

EB1

PF1

UB1

QM34

QM31

XL1

XL6

XL4

FR1

XL3

XL7

XL2

QM22

UB3

AA4

W130

SF1

AA4-XJ4

AA4-XJ3

BT6

UB2

QM32

QM33

PF2

View from above

XL5 BT7

View from behind

BF1

5Chapter 2 | The heat pump designF1245

2 The heat pump design

Pipe connections

Connection, heating medium flowXL1

Connection, heating medium returnXL2

Connection, cold waterXL3

Connection, hot waterXL4

Connection, HWC*XL5

Connection, brine inXL6

Connection, brine outXL7

* Only heat pumps with enamelled or stainless steel vessel.

HVAC components

Venting, coilQM22

Shut-off valve, heating medium flowQM31

Shut off valve, heating medium returnQM32

Shut off valve, brine outQM33

Shut-off valve, brine inQM34

Shuttle valve, climate system/water heaterQN10

Sensors etc.

Flow meter**BF1

Outdoor temperature sensor*BT1

Temperature sensors, heating medium flowBT2

Temperature sensor, hot water chargingBT6

Temperature sensor, hot water topBT7

**Only heat pumps with energy meter

* Not illustrated

Electrical components

Display unitAA4

AA4-XJ3 USB socket

AA4-XJ4 Service outlet (No function)

Immersion heaterEB1

El. anode*FR1

SwitchSF1

Network cable for NIBE UplinkW130

* Only heat pump with enamelled vessel.

Miscellaneous

Rating platePF1

Type plate, cooling sectionPF2

Cable gland, incoming electricityUB1

Cable glandUB2

Cable gland, rear side, sensorUB3

Designations in component locations according to

standard IEC 81346-1 and 81346-2.

F1245Chapter 2 | The heat pump design6

Distribution boxes

F1245

AA1

FD1

AA8

FA1

FB1

AA3

AA2

Electrical components

Immersion heater cardAA1

Base cardAA2

Input circuit boardAA3

Electrical anode board*AA8

Miniature circuit-breakerFA1

Motor cut-out**FB1

Temperature limiter/Emergency mode thermostatFD1

* Only heat pump with enamelled vessel.

** 1x230 V, 3x230 V 6-10 kW, 3x400V 5 kW has auxiliary switch

for motor cut-out.

Designations in component locations according to

standard IEC 81346-1 and 81346-2.

7Chapter 2 | The heat pump designF1245

1x230 V 5-12 kW

3x400 V 5 kW

FB1

X302 CA1

X301 QA30

3x400 V 6-12 kW

FB1 AA10

3x230 V 6-10 kW

X302

AA10

FB1

3x230 V 12 kW

BE4

X302 RF1

QA10

FB1

Electrical components

Soft-start cardAA10

Phase sequence monitor (3-phase)BE4

CapacitorCA1

Motor cut-out**FB1

Contactor, compressorQA10

Soft-starterQA30

Suppression capacitorRF1

Terminal blockX301

Terminal blockX302

** 1x230 V, 3x230 V 6-10 kW, 3x400V 5 kW has auxiliary switch

for motor cut-out.

Designations in component locations according to

standard IEC 81346-1 and 81346-2.

F1245Chapter 2 | The heat pump design8

Cooling section

5-8kW

BT11

QM2

GP2

BT10

AA100

QM1

BT3

GP1

BT12

10 & 12 kW

BT12

GP2

GP1

BT3

QM1

BT10

AA100

BT11

QM2

1x230 V 5 kW

3x400 V 5 kW

EP2

BT14

BT17

BP2

BT15

BP1

EP1

GQ10

HS1

XL21

QN1

XL20

EB10

3x230 V 6-10 kW

3x400 V 6-10 kW

EP2

BT17

BT14

BP2

BT15

BP1

XL20

EP1

GQ10

HS1

XL21

QN1

EB10

1x230 V 8-12 kW

3x400 V 12 kW

EP2

BT14

BT17

BP2

BT15

BP1

EB10

EP1

GQ10

HS1

XL21

QN1

XL20

3x230 V 12 kW

Växlare är tunnare i Light

versioner

Kyldel 15, 17 kW

BT14

BT17

BP2

BT15

BP1

EB10

EP1

GQ10

HS1

XL21

QN1

XL20

EP2

9Chapter 2 | The heat pump designF1245

Pipe connections

Service connection, high pressureXL20

Service connection, low pressureXL21

HVAC components

Circulation pumpGP1

Brine pumpGP2

Drainage, climate systemQM1

Draining, brine sideQM2

Sensors etc.

High pressure pressostatBP1

Low pressure pressostatBP2

Temperature sensors, heating medium returnBT3

Temperature sensor, brine inBT10

Temperature sensor, brine outBT11

Temperature sensor, condenser supply lineBT12

Temperature sensor, hot gasBT14

Temperature sensor, fluid pipeBT15

Temperature sensor, suction gasBT17

Electrical components

Joint cardAA100

Compressor heaterEB 10

Cooling components

EvaporatorEP1

CondenserEP2

CompressorGQ10

Drying filterHS1

Expansion valveQN1

Designations in component locations according to

standard IEC 81346-1 and 81346-2.

F1245Chapter 2 | The heat pump design10

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