Nibe F2300 User manual

Brand: Nibe

Model: F2300

Type: User manual

Nibe F2300 is an air/water heat pump designed for domestic use. Its operation is based on extracting energy from the outside air and converting it into heat for your home's heating system and hot water. This energy-efficient solution can help reduce your energy bills and provide a comfortable indoor climate all year round.

Service manual

LEK

NIBE™ F2300

Air/water heat pump

SEM GB 1335-1

M11450

Table of Contents

1 Important information 2

Document information 2

Safety information 2

Contact information 3

2 The heat pump design 4

3 System description 7

Principle of operation 7

Sensor internal 8

System diagram 9

4 Compressor protection 10

Hot gas temperature 10

High pressure switch (BP10) 10

Low pressure switch (BP2) 10

High supply temperature 10

High return temperature 10

MP alarm (07) 10

Main contactor (QA51) 10

Motor circuit breaker (FC2) 10

Phase monitor (BA1) 10

Time conditions compressor 10

5 Component description 11

Compressor (GQ10) 11

Other components 11

Electronics 11

Sensors 12

Reference designation 14

6 Troubleshooting 15

Alarm list 15

Troubleshooting guide 17

Function check, relays/components 22

7 Component replacement 23

Basic 23

Main components 24

Circuit board and electronics 30

8 Technical data 31

Electrical circuit diagram 31

Dimensions and setting-out coordinates 35

Technical specifications 36

Item register 39

1Table of Contents |NIBE™ F2300

Document information

This technical manual is a complement to the Installer

handbook for F2300, containing:

႑Description of functions and component description.

႑Information to facilitate fault-tracing.

႑Instructions for replacing components.

႑Wiring diagram

႑Supplementary technical information.

Safety information

This manual describes installation and service proced-

ures for implementation by specialists.

This appliance is designed for use in domestic environ-

ments and not intended for use by persons with re-

duced physical, sensory or mental capabilities or lack

of experience and knowledge about the appliance,

unless they have been given supervision or instruction

concerning the use of the appliance by a person re-

sponsible for their safety. This is in accordance with the

applicable parts of the low voltage directive

2006/95/EG LVD. The product is also intended for use

by experts or trained users in businesses, hotels, light

industry, agriculture and similar environments. This is

in accordance with the applicable parts of the machine

directive 2006/42/EG.

Children must be instructed/supervised to ensure that

they do not play with the appliance.

This is an original handbook. It must not be translated

without approval from NIBE.

We reserve the right to make design modifications

without prior notice.

©NIBE 2011.

Symbols

NOTE

This symbol indicates danger to machine or

person.

Caution

This symbol indicates important information

about what you should observe when main-

taining your installation.

TIP

This symbol indicates tips on how to facilitate

using the product.

Marking

F2300 is CE marked and fulfils IP24.

The CE marking means that NIBE ensures that the

product meets all regulations that are placed on it

based on relevant EU directives. The CE mark is obligat-

ory for most products sold in the EU, regardless where

they are made.

IP24 means that the product is secure against penetra-

tion by objects with a diameter larger than or equival-

ent to 12.5 mm and that the product is protected

against drops from all directions.

Serial number

The serial number can be found at the top left of the

rear cover and on the foot of the product.

6HULDO QXPEHU

Caution

Always give the product's serial number when

reporting a fault.

NIBE™ F2300Chapter 1 | Important information2

1 Important information

Contact information

KNV Energietechnik GmbH, Gahberggasse 11, 4861 SchörflingAT

Tel: +43 (0)7662 8963-0 Fax: +43 (0)7662 8963-44 E-mail: mail@knv.at www.knv.at

NIBE Wärmetechnik AG, Winterthurerstrasse 710, CH-8247 FlurlingenCH

Tel: (52) 647 00 30 Fax: (52) 647 00 31 E-mail: [email protected] www.nibe.ch

Druzstevni 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.cz

NIBE Systemtechnik GmbH, Am Reiherpfahl 3, 29223 CelleDE

Tel: 05141/7546-0 Fax: 05141/7546-99 E-mail: [email protected] www.nibe.de

Vølund 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.dk

NIBE Energy Systems OY, Juurakkotie 3, 01510 VantaaFI

Puh: 09-274 697 0 Fax: 09-274 697 40 E-mail: inf[email protected] www.nibe.fi

AIT France, 10 rue des Moines, 67000 HaguenauFR

Tel : 03 88 06 24 10 Fax : 03 88 06 90 15 E-mail: [email protected] www.nibe.fr

NIBE Energy Systems Ltd, 3C Broom Business Park, Bridge Way, Chesterfield S41 9QGGB

Tel: 0845 095 1200 Fax: 0845 095 1201 E-mail: [email protected].uk www.nibe.co.uk

NIBE Energietechniek B.V., Postbus 2, NL-4797 ZG WILLEMSTAD (NB)NL

Tel: 0168 477722 Fax: 0168 476998 E-mail: [email protected] www.nibenl.nl

ABK AS, Brobekkveien 80, 0582 Oslo, Postadresse: Postboks 64 Vollebekk, 0516 OsloNO

Tel. sentralbord: +47 23 17 05 20 E-mail: [email protected] www.nibeenergysystems.no

NIBE-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: sekretariat@biawar.com.pl www.biawar.com.pl

Tel./fax +7 831 419 57 06 E-mail: [email protected] www.nibe-evan.ru

NIBE 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 Nibe Sweden or check www.nibe.eu for more information.

3Chapter 1 | Important informationNIBE™ F2300

General

LEK

*4

(%

41 ;/

+6

;/

(%

50 %7 %3

%7

;/

*4

(3

%7

%3

$$

41

(%

%3

41

41

41

:0

LEK

%7

(38%

;/

3)

;/

%7

;/

%7

$$

3)

%7

3)

NIBE™ F2300Chapter 2 | The heat pump design4

2 The heat pump design

Pipe connections

Connection, heating medium out of F2300, G1

1/4" (Ø35 mm)

XL1

Connection, heating medium in to F2300, G1

1/4" (Ø35 mm)

XL2

Service connection, high pressureXL20

Service connection, low pressureXL21

Connection, drip tray drain (Ø40 mm)XL40

Sensors etc.

High pressure switch (29 bar)BP1

Low pressure pressostatBP2

High pressure switch (32 bar)BP10

Temperature sensor, returnBT3

Temperature sensor, condenser supply lineBT12

Temperature sensor, hot gasBT14

Temperature sensor, fluid pipeBT15

Temperature sensor, evaporatorBT16

Temperature sensor, suction gasBT17

Temperature sensor, ambientBT28

Electrical components

Joint card, sensorAA100

Joint cardAA101

Compressor heaterEB10

Drip tray heaterEB11

Collar heaterEB13

FanGQ1

Cooling components

EvaporatorEP1

CondenserEP2

CompressorGQ10

Drying filterHS1

Expansion valveQN1

4-way valveQN2

Solenoid valve, fluid injectionQN30

Solenoid valve, subcoolingQN31

Expansion valve, subcoolingQN34

Non-return valveRM1

Miscellaneous

Type platePF1

Serial numberPF3

Cable gland, incoming supplyUB1

Condensation water troughWM5

Designations in component locations according to

standard IEC 81346-1 and 81346-2.

5Chapter 2 | The heat pump designNIBE™ F2300

Electrical cabinets

$$6 $$ $$6) ; ;

$$6

$$6

$$6

;

;

);$$

4$

4$

4$

4$

)%

LEK

)&

;

%$

$$

Electrical components

Relay card with power supply unitAA6

Soft-start relayAA10

Control card with displayAA21

Plus buttonS1

Minus buttonS2

Enter buttonS3

Reset buttonS4

Display contrastSF 3

Phase sequence monitor (3-phase)BA1

Fuse for external heating cable (250 mA)F3

Automatic protection (10 A/30 mA)FB1

Motor fuseFC2

Contactor, main contactorQA51

Contactor, low speed fanQA52

Contactor, high speed fanQA53

Terminal block, incoming supplyX1

Terminal block, external supplyX2

Terminal block, charge pump, external heaterX3

Terminal block, common alarmX4

Terminal block, thermostat, compressor blockingX5

Terminal blockX6

Designations in component locations according to

standard IEC 81346-1 and 81346-2.

NIBE™ F2300Chapter 2 | The heat pump design6

Principle of operation

BT16

BT28

BT17

BT14

BT15 BT13

BT12

BP1

BP2

BT10

MEP1

EP2

QN2

GQ10

QN30

QN31

QN34

QN1

Underkylare

Avfrostningsprocess

HS1

Kapillärrör

Partikellter

Fläkt

)DQ

3DUWLFOH ILOWHU

50

41

&DSLOODU\ SLSH ~

(3

%7

%3

%7

*4

%3

(3

41

+6

%7

%7 %7

%7

%7

6XEFRROHU

41

41

41

&DSLOODU\ SLSH

%7

Cooling circuit diagram

InformationDesigna-

tion

InformationDesigna-

tion

CondenserEP2High pressure switch (29 bar)BP1

CompressorGQ10Low pressure pressostatBP2

Drying filterHS1High pressure switch (32 bar)BP10

Fan motorMTemperature sensor, returnBT3

Expansion valveQN1Temperature sensor, condenser supply lineBT12

4-way valveQN2Temperature sensor, hot gasBT14

Solenoid valve fluid injectionQN30Temperature sensor, fluid pipeBT15

Solenoid valve subcoolingQN31Temperature sensor, evaporator inBT16

Expansion valve, subcoolerQN34Temperature sensor, suction gasBT17

Non-return valveRM1Temperature sensor, ambientBT28

EvaporatorEP1

7Chapter 3 | System descriptionNIBE™ F2300

3 System description

Sensor internal

Sensors etc.

FunctionLocationNameDesigna-

tion

Protects the compressor against pressures that are

too high during defrosting.

On hot gas line.High pressure switch

(29 bar)

BP1

Protects the compressor against pressures that are

too low.

On suction gas line.Low pressure

pressostat

BP2

Protects the compressor against pressures that are

too high during normal operation.

On hot gas line.High pressure switch

(32 bar)

BP10

Stopping the compressor at high temp.On return line at the condens-

er.

Return pipeBT3

Stopping the compressor at high temp.On supply line at the con-

denser.

Flow pipeBT12

Stopping the compressor at high temp.On hot gas pipe after the

compressor.

DischargeBT14

View.On the liquid line after the

condenser.

Fluid pipeBT15

Starting and stopping defrosting.On the lower part of the

nozzle pipe

EvaporatorBT16

View.On the suction pipe before

the compressor.

Suction gasBT17

Stops comp at high and low outdoor temperature.

Switches fan speed.

Permits/blocks defrosting.

On the side panel next to the

upper part of the evaporator

bend.

Surrounding areaBT28

NIBE™ F2300Chapter 3 | System description8

System diagram

F2300 docked to the electric/oil-fired/pellet boiler together with SMO 05 and water heater (floating condens-

ing)

-EB101

-CM1

-FL2

-FL10

-CP11

-AA25

-KA10

-AA25

-KA11

-CP10

-EB20

-AA25

-BT25

-QM40

-GP12

-QM1 -HQ1

-QN10

-RM1

-AA25-BT1 -AA25-BT50

-QM32

-QM31

-AA25 -AA25-AA4

-EB1

-RN11

-AA25

-BT6

-CP10

-GP10

-FL11

-RN10

-AA25

-BT7

-QN26

)

Function

SMO05 prioritises hot water charging. The circulation

pump GP12 operates at the fixed set speed. When the

heater is fully charged QN10 switches to the heating

system. The heat pump works to a calculated set point

value on the supply line. If the heat pump cannot sup-

ply the whole heating demand, additional heat EB1

and immersion heater EB20 are connected.

TIP

Several system principles available at

www.nibe.se/docking.

Refer to the Installer manual for description

of possible docking alternatives.

Installation requirements heating medium

20 kW14 kW

0.05/0.3MPaMin/Max system pressure heat-

ing medium 0.5/3 bar

0.480.35l/sNominal flow

4.54.5kPaInternal pressure drop at nomin-

al flow

See diagram°CMin/Max HMtemp continuous

operation

9Chapter 3 | System descriptionNIBE™ F2300

Hot gas temperature

Stop with automatic restart:

႑The compressor stops when the temperature (BT14)

exceeds 135 °C.

Stop with manual restart:

႑The above has occurred 3 times within 240 minutes.

Restart when (BT14) is below 60 °C.

High pressure switch (BP10)

႑The compressor stops when the pressure exceeds

32 °C. The alarm can be reset manually when the

pressure falls below 25 bar.

Low pressure switch (BP2)

႑The compressor stops when the pressure has fallen

below 0.2 bar. The alarm can be reset manually when

the pressure exceeds 0.7 bar.

Working area

-20-25-30 -15-10-5 0 5 101520253035 4540

Water temperature

°C

Outdoor air temperature

Supply temperature

Return temp

During shorter time it is allowed to have lower working

temperatures on the water side, e.g. during start up.

High supply temperature

Blocks the compressor when the supply temperature

(BT12) is higher than maximum supply temperature.

Resets when supply temperature (BT12) is lower than

max supply temperature and the return temperature

is lower than maximum return temperature minus dif-

ference in menu A3.

High return temperature

Blocks the compressor when the return temperature

(BT3) is higher than maximum return temperature.

Resets when the return temperature (BT3) is lower than

maximum return temperature minus diff in menu A3.

MP alarm (07)

MP alarm (07) is obtained if main contactor (QA51,

motor circuit breaker (FC2), high pressure switch (BP10)

or phase monitor *BA1) have tripped.

Main contactor (QA51)

If any of the following conditions are met, the main

contactor breaks (QA51).

႑High pressure switch (BP10) has tripped

႑The fan's (GO1) klixon has tripped.

Motor circuit breaker (FC2)

Tripped motor circuit breaker is reset manually .

FuseF2300

13 A14 kW

16 A20 kW

Phase monitor (BA1)

Trips if:

႑a phase falls below ~160 V.

႑incorrect phase sequence

Time conditions compressor

႑Minimum time between stop and start is 5 min.

႑Minimum time from start to next start is 20 min.

႑Quick start occurs in menu S2.

NIBE™ F2300Chapter 4 | Compressor protection10

4 Compressor protection

Compressor (GQ10)

Locked rotor current.Max operating cur-

rent

Winding resistance*TypeSize

64 A10 A2.8 ΩScroll14 kW

101 A14 A1.8 ΩScroll20 kW

*at20°C+/-10%

Other components

DescriptionComponent

Breaking value: 29 barHigh pressure switch (BP1)

Reconnection differential: -7 bar

Breaking value: 32 barHigh pressure switch (BP10)

Reconnection differential: -7 bar

Breaking value: 0.2 barLow pressure switch (BP2)

Reconnection differential: 0.5 bar

VoltageOutputOhmComponent

230 V43 W1230 ΩCompressor heating (EB 10)

230 V284 W213.3 ΩDrip tray heater (EB 11)

230 V275 W192.4 ΩCollar heater (EB 13)

VoltageFuseOutputOhmComponent

230 VT100 mA15 W3527 ΩKVR 10 - 10

230 VT250 mA45 W1175 ΩKVR 10 - 30

230 VT500 mA90 W588 ΩKVR 10 - 60

Electronics

Control card with display (AA21)

Jumpers on the edge connector J9 on the control card

give the compressor size, which affects time between

defrostings, at which temperature the fan must change

speed and at which temperature the de-icing fan

function must run.

Compressor sizeBridge

14 kWJ9:5-6 and J9:7-8

20 kWJ9:3-4, J9:5-6, J9:7-8

11Chapter 5 | Component descriptionNIBE™ F2300

5 Component description

Sensors

Data for return line temperature sensor (BT3), con-

denser supply (BT12) and fluid pipe (BT15)

Voltage (VDC)Resistance

(kOhm)

Temperature

(°C)

3.256351.0-40

3.240251.6-35

3.218182.5-30

3.189133.8-25

3.15099.22-20

3.10574.32-15

3.04756.20-10

2.97642.89-5

2.88933.020

2.78925.615

2.67320.0210

2.54115.7715

2.39912.5120

2.24510.0025

2.0838.04530

1.9166.51435

1.7525.30640

1.5874.34845

1.4263.58350

1.2782.96855

1.1362.46760

1.0072.06865

0.8911.73970

0.7851.46975

0.6911.24680

0.6071.06185

0.5330.90890

0.4690.77995

0.4140.672100

Data for hot gas sensor (BT14)

Voltage (V)Resistance

(kOhm)

Temperature

(°C)

4.81118.740

4.7796.1345

4.7278.3050

4.6664.1155

4.5952.7660

4.5143.6465

4.4336.2670

4.3330.2775

4.2225.3880

4.1021.3785

3.9718.0790

3.8315.3395

3.6813.06100

3.5211.17105

3.369.59110

3.198.26115

3.017.13120

2.846.18125

2.675.37130

2.504.69135

2.334.10140

NIBE™ F2300Chapter 5 | Component description12

Data for evaporator sensor (BT16), ambient temper-

ature sensor (BT28) and suction gas sensor (BT17)

Voltage (VDC)Resistance

(kOhm)

Temperature

(°C)

4.7177.58-50

4.6257.69-45

4.5143.34-40

4.3732.87-35

4.2125.17-30

4.0319.43-25

3.8215.13-20

3.5811.88-15

3.339.392-10

3.077.481-5

2.806.0000

2.544.8445

2.283.93510

2.033.21715

1.802.64420

1.592.18625

1.391.81730

1.221.51835

1.071.27440

0.931.07545

0.810.91150

0.710.77555

0.620.66260

0.540.56865

0.470.49070

0.410.423375

0.360.36780

0.320.32085

0.280.28090

0.250.24595

0.220.216100

13Chapter 5 | Component descriptionNIBE™ F2300

Reference designation

Sensor typeDescriptionName

Pressure switch with break value of

29 bar

High pressure pressostatBP1 (HP)

Pressure switch with break value of

0.2 bar

Low pressure pressostatBP2 (LP)

Pressure switch with break value of

32 bar

High pressure pressostatBP10 (HP)

”EMMY standard sensor”Temperature sensor, returnBT3 (Treturn)

”EMMY standard sensor”Temperature sensor, condenser supply

line

BT12 (Tsupply)

”EMMY hot sensor”Temperature sensor, hot gasBT14 (Thot g)

”EMMY standard sensor”Temperature sensor, fluid pipeBT15 (Tliquid)

”EMMY cold sensor”Temperature sensor, evaporator inBT16 (Tevap)

”EMMY cold sensor”Temperature sensor, suction gasBT17 (Tsuc)

”EMMY cold sensor”Temperature sensor, ambientBT28 (Toutdoor)

Goes via fuse that breaks all three

phases and via phase monitor and the

fan's internal motor protection.

Compressor protectionFC2

NIBE™ F2300Chapter 5 | Component description14

Alarm list

A alarm - Constant alarm

Actions that all alarms cause:

႑Fan and compressor are blocked.

႑Relay output ”common alarm” is activated.

႑Stationary function is activated.

႑Addition function is activated.

Alarms are reset by restart of the heat pump.

May be due toDetects byAlarm type

Incorrectly connected or non-functioning pres-

sure switch. Defective fan or cooling system.

LP sensor (BP2) being cut for at least 2 seconds.LP alarm05

Phase failure.Compressor protection (FC2) has deployed.Compressor pro-

tection (FC2).

Deployed motor circuit breaker.

Incorrect phase sequence.Phase monitor (BA1) has deployed.Phase monitor

(BA1). Compressor protection (FC2) has deployed.

Phase failure.

Poorly bled system.High pressure switch (BP10) has tripped.High pressure

switch (BP10). Clogged particle filter.

The fan blades have jammed.The fan's internal motor protection has ex-

ceeded 150 ºC (resets automatically when the

temperature has dropped below 115 ºC)

Motor protec-

tion fan

Sensor not connected or defective.Sensor not con-

nected or defect-

ive.

Incorrect sensor value displayed as ”- -” in its

menu as long as measured value is outside the

permitted range.

Faulty wiring between the units or connections.If communication has been interrupted for five

minutes a Communication alarm is given.

Communication

alarm

Heating medium circulates through the condens-

er in wrong direction.

The supply temperature sensor (BT12) is lower

than the return line sensor (BT3) two minutes

after compressor start.

Incorrectly in-

stalled sensor

(supply and re-

turn line sensors

mixed up)

The value for the longest permitted defrosting

time in channel A11 may be set too low. Check

sensor.

Defrosting failed three times in a row.Defrosting

alarm

Check the connection difference for the thermo-

stat. Check the start temperature hot water in

any NIBE Indoor module. Check the charge flow

and the particle filter which may be partially

clogged.

The operating time (compressor start until

compressor stop) has been shorter than 120

seconds during all three of the latest compressor

operations.

Short operating

time alarm

Poor air flow through the evaporator due to

blockage by snow or leaves. Check sensor.

The hot gas temperature (BT14) exceeds 135

degrees three times within 240 minutes.

Hot gas alarm17

Program version in control card is older than

v69.

Defrosting starts 10 times in a row with the

safety function.

Low evapora-

tion temperat-

ure

15Chapter 6 | TroubleshootingNIBE™ F2300

6 Troubleshooting

B alarm - Automatic resettable alarm

ExplanationHeat pump action.Detects byAlarm

type

BT28 is greater than the stop

temperature (in menu A7)+2°C

for 60 min. in succession. All

electrical additional heat is

switched off after 45 min. in suc-

cession, after another 15 min. the

compressor can restart. If the

ambient temperature at any

point drops below the stop tem-

perature (in menu A7)+2°Cthe

counter restarts from 0.

Compressor blocked.

Additional heat and stationary

functions activated.

The ambient temperature (BT28)

is less than the stop temperature

(menu A7).

Cold ambi-

ent tem-

perature

The compressor starts when (BT3)

is lower than maximum return

line - difference in menu A3.

Compressor blocked.

The charge pump runs one

minute after the compressor has

stopped.

The return temperature(BT3) is

greater than maximum return

line.

Does not apply during defrosting.

High re-

turn tem-

perature

Restarts when the pressure

switch is reset.

Compressor blocked.HP sensor (BP1) interrupted be-

low or within 2 minutes after de-

frosting.

Defrost-

ing HP

alarm

Resets when the ambient temper-

ature (BT28) is less than 38 C.

Compressor blocked.

Stationary relay is activated. Addi-

tional heat relay not activated.

The ambient temperature (BT28

) is greater than 40 °C.

Hot ambi-

ent tem-

perature

Restarts when (BT12) is less than

max supply temperature and the

return temperature (BT13) is less

than max return temperature -

diff in menu A3.

Compressor blocked.When the supply temperature

(BT12) is greater than max supply

line.

High sup-

ply tem-

perature

Restarts automatically when BT14

is less than 60 °C.

Compressor blocked.The hot gas temperature (BT14 )

is greater than 135 °C.

Hot gas

stop

Repeated hot gas stop can give

constant hot gas alarm.

NIBE™ F2300Chapter 6 | Troubleshooting16

Troubleshooting guide

Alarm 05 – low pressure alarm

<(6

'RHV WKH SUHVVXUH VZLWFK EUHDN DW

WKH FRUUHFW SUHVVXUH"

,V WKH SUHVVXUH VZLWFK FRUUHFWO\

FRQQHFWHG"

$FWLRQ

,V WKH IDQ FRUUHFW" $FWLRQ

<(6

,V WKH UHIULJHUDQW FLUFXLW LQWDFW" $FWLRQ

/DFN RI KHDWLQJ PHGLXP RU RWKHU

IDXOW LQ WKH FRROLQJ FLUFXLW &RQWDFW

DQ DXWKRULVHG UHIULJHUDWLRQ

WHFKQLFLDQ

<(6

17Chapter 6 | TroubleshootingNIBE™ F2300

Alarm 07 - motor circuit breaker alarm

Does the LED on the phase

monitor flash (BA1)?

Is the LED on the phase monitor

(BA1) off?

Change phase sequence /

Replace phase monitor (BA1).

YES

Reset motor circuit breaker (FC2 ).

Is the heating medium flow

correct?

YES

Does the pressure switch break at

the correct pressure?

Is the pressure switch correctly

connected?

Action.

- Check the heating medium

pump.

- Open any radiator thermostats.

- Check the particle filter.

Fault in cooling circuit. Contact an

authorised refrigeration technician.

Reset the alarm.

Has the alarm been

acknowledged?

YES High pressure switch (BP10 ) or the fan's

(GQ10) internal Klixon has tripped, remedy.

High pressure switch (BP10 ) Klixon

YES

Does closing occur between pins

7 and 8 on contact XJ1?

Does the fan rotate easily?

Klixon tripped

Action.

NIBE™ F2300Chapter 6 | Troubleshooting18

Page is loading ...

Nibe F2300 User manual

Nibe F2300 User manual

Related papers

Other documents