Nibe F1245 Service Manual
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Nibe F1245 Service Manual

Ground source heat pump
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Service manual
F1245
Ground source heat pump
SEM GB 1720-2
431504

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Summary of Contents for Nibe F1245

  • Page 1 Service manual F1245 Ground source heat pump SEM GB 1720-2 431504...

  • Page 3: Table Of Contents

    Function check, relays/components 7 Component replacement Basic Main components Circuit board and electronics Temperature sensor 8 Technical specifications Dimensions and setting-out coordinates 1x230V 3x230V 3x400 V Miscellaneous Working range heat pump, compressor opera- tion Item register F1245 Table of Contents |...

  • Page 4: Important Information

    Document information The CE mark is obligatory for most products sold This technical manual is a complement to the Installer handbook for F1245, containing: in the EU, regardless of where they are made. Description of functions and component description. ■...

  • Page 5: The Heat Pump Design

    2 The heat pump design The heat pump design View from behind General QM22 QN10 W130 F1245 AA4-XJ4 AA4-XJ3 QM34 QM31 QM32 QM33 View from above F1245 Chapter 2 | The heat pump design...
  • Page 6 Display unit AA4-XJ3 USB socket AA4-XJ4 Service outlet (No function) Immersion heater El. anode* Switch W130 Network cable for NIBE Uplink * Only heat pump with enamelled vessel. Miscellaneous Rating plate Type plate, cooling section Cable gland, incoming electricity Cable gland...
  • Page 7 Distribution boxes F1245 Electrical components Designations in component locations according to standard IEC 81346-1 and 81346-2. Immersion heater card Base card Input circuit board Electrical anode board* Miniature circuit-breaker Motor cut-out** Temperature limiter/Emergency mode thermostat * Only heat pump with enamelled vessel.
  • Page 8 3x400 V 6-12 kW AA10 3x230 V 6-10 kW AA10 X302 3x230 V 12 kW QA10 X302 Electrical components AA10 Soft-start card Phase sequence monitor (3-phase) Capacitor Motor cut-out** QA10 Contactor, compressor QA30 Soft-starter Chapter 2 | The heat pump design F1245...
  • Page 9 1x230 V 5 kW 3x400 V 5 kW BT14 GQ10 BT14 GQ10 BT17 BT17 BT15 XL21 BT15 XL21 EB10 XL20 Kyldel 15, 17 kW EB10 XL20 Växlare är tunnare i Light versioner F1245 Chapter 2 | The heat pump design...
  • Page 10 Temperature sensor, suction gas Electrical components AA100 Joint card EB 10 Compressor heater Cooling components Evaporator Condenser GQ10 Compressor Drying filter Expansion valve Designations in component locations according to standard IEC 81346-1 and 81346-2. Chapter 2 | The heat pump design F1245...

  • Page 11: System Description Principle Of Operation

    Shut-off valve, brine in XL 6 Connection, brine in QN 10 Shuttle valve, climate system/water heater XL 7 Connection, brine out Cooling components EP 1 Evaporator EP 2 Condenser GQ 10 Compressor QN 1 Expansion valve F1245 Chapter 3 | System description...
  • Page 12 Externally on the flow line to the heat- Calculation of DM. Actual value for ad- ing system. ditional shunt. BT50* Room sensor In suitable indoor location. Correction of the indoor temperature. * Externally mounted (not included in outline diagram). Chapter 3 | System description F1245...
  • Page 13 Actual value for shunt valve, climate system system 8. EP27-BT3 Return line, extra climate On return line from extra climate sys- View system tem 8. AZ1-BT20 Exhaust air In exhaust air in FLM. View. F1245 Chapter 3 | System description...
  • Page 14 Name Location Function AZ1-BT21 Extract air In extract air in FLM. Controls defrosting AZ1-BT26 Collector in On incoming collector line in FLM. View. AZ1-BT27 Collector out On outgoing collector line in FLM. View. Chapter 3 | System description F1245...

  • Page 15: System Diagram

    Lables according to IEC 61346-2 Function The heat pump prioritises hot water charging. The circulation pump GP1 runs at a set speed. More system principles are on www.nibe.eu. Refer to the Installer manual for description of possible docking alternatives. F1245...
  • Page 16 *** external circulation pump must be used when the pressure drop in the system is greater than the available ex- ternal pressure. In such cases, a bypass line with non-return valve must be installed. Chapter 3 | System description F1245...
  • Page 17 Max system pressure Min flow 0.19 0.25 0.33 0.40 0.47 Nominal flow 0.23 0.30 0.42 0.51 0.65 Max external available pressure at nom flow Max/min incoming temperature °C See diagram page 76. Min outgoing temperature °C F1245 Chapter 3 | System description...

  • Page 18: Cooling Circuit

    The function is blocked for 1 minutes after switching between charging type HW and heatingand pool Motor protection Tripped motor protection is reset manually on the motor protection breaker. F1245 Setting 1 x Setting 3 x Setting 3 x 230 V...

  • Page 19: Expansion Valve

    Overheating is shown in the table below and must be checked when the temperature of the heating medium flow is 30 - 55 °C and the brine in is -5 - +15 °C. F1245 superheat 5 kW 4 - 6 °C 6 kW 4 - 6 °C...

  • Page 20: Component Description

    Size (kW) Type Resistance range (Ω at 20 °C +/- 10 %) W-V[C-R] W-U[C-S] U-V[S-R] Piston 4.18 5.88 Piston 5.19 5.19 5.19 Piston 3.56 3.56 3.56 Piston 3.59 3.59 3.59 Scroll 3.64 3.64 3.64 Chapter 5 | Component description F1245...

  • Page 21: Other Components

    Actuator motor: 7 VA, 230/24 VAC, 50 Hz, IP 40. Running time approx 8 seconds Max. operating pressure: 1.0 MPa Operating temperature: 5 - 80 °C (90 °C briefly) From September 2012 Ø28 Ø28 Before September 2012 Ø28 Ø28 F1245 Chapter 5 | Component description...
  • Page 22 Component Description Heating medium pump Grundfos UPM (GP1) Max lift height: 7.5 m Control signal: PWM 0-10 V DC (max-min speed) Ø28 Chapter 5 | Component description F1245...
  • Page 23 High pressure switch (BP1) Breaking value: 29 bar Reconnection differential: -7 bar Low pressure switch (BP2) Breaking value: 1.5 bar Reconnection differential: 1.5 bar Compressor heater Output (5-10): 30 W Output (12-17): 40 W F1245 Chapter 5 | Component description...

  • Page 24: Sensors

    0.891 1.469 0.785 1.246 0.691 1.061 0.607 0.908 0.533 0.779 0.469 0.672 0.414 Electronics Immersion heater card (AA1) Indication K1 - K10: Or- A steady light means that the relevant relay ange is engaged. Chapter 5 | Component description F1245...
  • Page 25 2 flash: Phase L2 missing 3 flash: Phase L3 missing 4 flash: Motor protection deployed Continuous light: Incorrect phase sequence Compr. on: Steady light when the compressor is active. Orange Bypass: Or- Bypass bridge installed (alarm ignored). ange F1245 Chapter 5 | Component description...
  • Page 26 40 and "external control". ange SYNC No function. K1 - K4: Or- A steady light means that the relevant relay ange is engaged. A steady light means that supply voltage is OK. Output Function See relevant accessory. Chapter 5 | Component description F1245...

  • Page 27: Troubleshooting

    AZ30-BT22 Sup- fective fans and opens QN40 ply air sensor (Supply air) Sensor fault AZ1- Sensor not connected/de- Circulation pump (AZ1-GP2) in See fault-tracing schedule BT26 fective FLM is blocked. page 40. (brine, collector in). F1245 Chapter 6 | Troubleshooting...
  • Page 28 Phase fault Incorrect phase sequence or Compressor blocked. The heat The motor protection on missing phase has been de- pump switches to alarm opera- single phase machines may tected. tion. have tripped. Chapter 6 | Troubleshooting F1245...
  • Page 29 46. ing for 15 seconds. Perm. com. fault Communication with the Compressor blocked. See fault-tracing schedule soft-start card soft-start board has been page 46. missing for 15 seconds. F1245 Chapter 6 | Troubleshooting...
  • Page 30 2 seconds. Sensor fault AZ2- Sensor not connected/de- Accessory blocked. BT26 - FLM3 fective The input for the sensor receives (collector in) unreasonably high or low value for longer than 2 seconds. Chapter 6 | Troubleshooting F1245...
  • Page 31 (Alarm at slave level facilitates logging) 311–318 Slave alarm from Alarm from the slave has Compressor blocked at relevant slave 1-8 been detected. slave, manual resetting of relev- ant slave. (Alarm at slave level facilitates logging) F1245 Chapter 6 | Troubleshooting...
  • Page 32 At no BT3, the accessory seconds. is blocked. Com. fault OPT Communication with the None accessory board OPT has been missing for 60 seconds. Internal OPT Alarm generated by the gas None fault boiler. Chapter 6 | Troubleshooting F1245...
  • Page 33 Resets automatically when Settings out temperature max permitted temperature condenser in has fallen two degrees ■ High condenser Condenser in has reached max Resets automatically when Settings in temperature permitted temperature condenser in has fallen two degrees F1245 Chapter 6 | Troubleshooting...
  • Page 34 Permits room heating Operating settings the outdoor temperature is below 3 °C and no heating is permitted ■ Unsuccessful Periodic increase did not reach Only information Operating settings periodic in- the stop temperature in five crease hours. Chapter 6 | Troubleshooting F1245...
  • Page 35 SPA not up- Electricity spot price cannot An average value of the most dated be obtained. recently obtained prices is used. Sensor fault Sensor fault BT50 room sensor Only information The sensor and its connections BT50 F1245 Chapter 6 | Troubleshooting...
  • Page 36 Additional heat is externally Additional heat is blocked Check any external connec- blocked via AUX input. tion functions. ■ Blocked Additional heat is externally Compressor is blocked Check any external connec- blocked via AUX input. tion functions. Chapter 6 | Troubleshooting F1245...

  • Page 37: Troubleshooting Guide

    (AA3)?JSH (See "Data for temperature sensor" section.) Is the output voltage from the card correct? (See "Data for Check wiring and switches. temperature sensor" section.) Defective input circuit board (AA3). Replace. F1245 Chapter 6 | Troubleshooting...
  • Page 38 Check wiring and switches. (AA2)? (See section “Electrical wiring diagram in IHB”.) Is the output voltage from the card Check wiring and switches. correct? (See "Data for temperature sensor" section.) Defective base card (AA2). Replace. Chapter 6 | Troubleshooting F1245...
  • Page 39 Defective joint card (AA100). base board (AA2)? Replace. (See Electrical wiring diagram in IHB) Is the output voltage from the card correct? (See "Data for Check wiring and switches. temperature sensor" section.) Defective base card (AA2). Replace. F1245 Chapter 6 | Troubleshooting...
  • Page 40 Alarm 20, 21, 26 – sensor fault Fault-tracing in NIBE FLM Is the actual sensor correctly Action. connected? Is the wiring connector (W4) on the joint card (AA100) correctly Action. connected? Is the wiring connector (W4) on the accessory card (AA5) correctly Action.
  • Page 41 Check wiring and switches. (AA5)? (See "Temperature sensor" section.) Is the output voltage from the card correct? (See "Data for Check wiring and switches. temperature sensor" section.) Defective accessory card (AA5). Replace. F1245 Chapter 6 | Troubleshooting...
  • Page 42 -QA40-X4? Does the pressure switch break at the Action. correct pressure? Are the supply temperature sensor (BT2 ) and return line sensor (BT3 ) Action. showing the correct readings? Check cooling circuit. Chapter 6 | Troubleshooting F1245...
  • Page 43 Is the pressure switch Action. correctly connected? Does the pressure switch Action. break at the correct pressure? Action. Is the refrigerant circuit intact? Lack of heating medium or other fault in the cooling circuit. Check cooling circuit. F1245 Chapter 6 | Troubleshooting...
  • Page 44 Can the overheat protection be reset when the temperature is Replace overheating protection. below 80 °C? Is the heating medium flow across Action. the heat pump correct? Check the relay function for the immersion heater. Chapter 6 | Troubleshooting F1245...
  • Page 45 Is the wiring connector (W105) correctly connected on input circuit Action. board (AA3-X2) and on the display card (AA4-X8)? Replace the input circuit board (AA3). Has the fault been corrected? Replace the display card (AA4). F1245 Chapter 6 | Troubleshooting...
  • Page 46 Action. (AA10-X5) and on the input card (AA2-X9)? Check the soft start card: Is power lit green? Replace the base card (AA2). Does com flash once/sec? Replace the soft start card (AA10). Chapter 6 | Troubleshooting F1245...
  • Page 47 (AA5-XJ6) (does not apply to alarm 79)? Replace the accessory card (AA5). Has the fault been corrected? Replace the input circuit board (AA3). Has the fault been corrected? Replace the display card (AA4). F1245 Chapter 6 | Troubleshooting...

  • Page 48: Function Check, Relays/Components

    Climate system 2 (ECS 40/41) Output Function EP21-AA5-K2 Mixing valve, close EP21-AA5-K3 Mixing valve, open EP21-AA5-K4 External circulation pump Climate system 3 (ECS 40/41) Output Function EP22-AA5-K2 Mixing valve, close EP22-AA5-K3 Mixing valve, open EP22-AA5-K4 External circulation pump Chapter 6 | Troubleshooting F1245...
  • Page 49 Step 2 EB1-AA5-K3 Step 3 Exhaust air module (FLM) Output Function Solar control (SOLAR40) EP16-AA5-K3 Fan (relay) Output Function EP16-AA5-K4 Brine pump FLM EP8-AA5-K1 Circulation pump solar coil (GP4) EP8-AA5-K2 Cooling EP8-AA5-K3 Reversing valve HW/heating F1245 Chapter 6 | Troubleshooting...
  • Page 50 0 V DC Not lit I DETTA LÄGE 0.8 Nm SKRUVEN DRAS MED 0,8Nm 50 % approx 5 V DC Half lit approx 10 V DC Install the valve in this MONTERA VENTILEN position. I DETTA LÄGE Chapter 6 | Troubleshooting F1245...

  • Page 51: Component Replacement

    Cut the current with the circuit breaker before carrying out any servicing. F1245 can contain liquids at high temperature and under high pressure. When replacing components on F1245 only re- placement parts from NIBE may be used.
  • Page 52 NOTE At reinstallation, the supplied O-rings must re- place the existing ones at the connections to the heat pump (see image). QM33 F1245 QM34 QM32 Disconnect the connectors (A) and (B) from the un- derside of the base card cabinet.
  • Page 53 2. Insert the screwdriver (A) and pry the catch carefully downwards (B). 3. Angle out the cover and remove it. 1. Insert the screwdriver (A) and pry the catch carefully downwards (B). 2. Angle out the cover and remove it. F1245 Chapter 7 | Component replacement...

  • Page 54: Main Components

    3 Slacken off 10 screws. 4 Remove the cover on the cooling module. 5 Slacken off 6 screws. 6 Remove the right/rear side panel on the cooling mod- ule. Chapter 7 | Component replacement F1245...
  • Page 55 8 Remove the left/rear side panel on the cooling mod- ule. 9 Unscrew the ground cable. 10 Disconnect the com- Ground cable pressor cables. 11 Remove the 4 locking plates holding the com- pressor. Securing plate F1245 Chapter 7 | Component replacement...
  • Page 56 12 Drain the cooling circuit Suction gas and ensure that no refriger- ant remains before you con- tinue. 13 Disconnect the pipes for suction gas and hot gas. 14 Remove the compressor. Discharge Chapter 7 | Component replacement F1245...
  • Page 57 3 Slacken off 10 screws. 4 Remove the cover on the cooling module. 5 Slacken off 6 screws. 6 Remove the right/rear side panel on the cooling mod- ule. F1245 Chapter 7 | Component replacement...
  • Page 58 7 Drain the cooling circuit and ensure that no refriger- ant remains before you con- Bulb tinue. 8 Slacken off the bulb for the expansion valve. 9 Disconnect the pipes and remove the valve. Expansion valve (QN1) Chapter 7 | Component replacement F1245...
  • Page 59 Immersion heater (EB1) 1 Drain the heating medium system. 2 Remove the plastic cap over (AA1) using a screw- driver. 3 Remove the insulation in front of the immersion heat- F1245 Chapter 7 | Component replacement...
  • Page 60 6 Pull out the two bulbs from the immersion heater. Cables 7 Disconnect the immersion heater at the marked coup- lings. 8 Remove the box for the immersion heater circuit board (AA1). 9 Remove the immersion heater. Connections Chapter 7 | Component replacement F1245...
  • Page 61 Reversing valve (QN10) 1 Drain the heating medium system. 2 Remove the plastic cap over (AA1) using a screw- driver. 3 Remove the insulation. F1245 Chapter 7 | Component replacement...
  • Page 62 4 Remove the switch on the actuator. Contact 5 Remove the pin and re- move the actuator. 6 Disconnect and remove the three way valve. Connections Chapter 7 | Component replacement F1245...
  • Page 63 6 Disconnect the electrical connector for the control cable on the circulation pump. 7 Release the pressure by carefully opening the connec- tions to the circulation Connections pump. 8 Disconnect and remove the circulation pump. Electrical connections F1245 Chapter 7 | Component replacement...
  • Page 64 3 Close the shut-off valves (QM33) and (QM34). 4 Drain the brine system. 5 Remove the switch on the circulation pump. 6 Disconnect and remove the circulation pump. Connections Electrical switch Chapter 7 | Component replacement F1245...

  • Page 65: Circuit Board And Electronics

    Immersion heater card (AA1) 1 Remove the plastic cap over (AA1) using a screw- driver. 2 Disconnect the cables and screws holding the card in position. Screw 3 Remove the immersion heater card (.AA1). F1245 Chapter 7 | Component replacement...
  • Page 66 2 Disconnect the two cables through the cover in front of (AA2). Cables 3 Remove the plastic cover over (AA2). 4 Disconnect the cables and screws holding the card in position. Screw 5 Remove the base card (AA2). Chapter 7 | Component replacement F1245...
  • Page 67 Input circuit board (AA3) 1 Remove the plastic cover over (AA3. See page 53. 2 Disconnect the cables and screws holding the card in position. 3 Remove the input card (AA3). Screw F1245 Chapter 7 | Component replacement...
  • Page 68 4 Remove the display unit. Network socket Electrical switch Soft-start card (AA10)/Soft-start card (AA5) 1 Remove the two screws in the motor module. 2 Open the motor module. 3 Disconnect all cables. 4 Replace the card Screws Chapter 7 | Component replacement F1245...

  • Page 69: Temperature Sensor

    2 Open the motor module. 3 Disconnect all cables. 4 Remove the soft-starter. Screws Temperature sensor Mounting Install the temperature sensor with cable ties with the heat conducting paste and aluminium tape. Then insulate with supplied insulation tape. F1245 Chapter 7 | Component replacement...

  • Page 70: Technical Specifications

    Dimensions and setting-out coordinates * This dimension applies at 90° angle on the brine pipes (side connection). The dimension can vary approx. ±100 mm in height as the brine pipes partially consist of flexible pipes. Chapter 8 | Technical specifications F1245...

  • Page 71: 1X230V

    1,774 Volume equivalent 2.13 3.02 3.73 3.55 Cut-out value pressure switch HP / LP 2.9 (29 bar) / 0.15 (1.5 bar) Difference pressure switch HP / LP 0.7 (-7 bar) / 0.15 (1.5 bar) F1245 Chapter 8 | Technical specifications...

  • Page 72: 3X230V

    Space heating efficiency class of the system 35 °C / 55 °C A+++ / A+++ / A+++ / A+++ / Efficiency class hot water / charging profile A / XL A / XL A / XL A / XL Chapter 8 | Technical specifications F1245...
  • Page 73 If the impedance in the mains connection point is higher than that stated it is possible that interference will occur. If the impedance in the mains connection point is higher than that stated check with the power supplier before purchasing the equipment. F1245 Chapter 8 | Technical specifications...

  • Page 74: 3X400 V

    30 – 87 30 – 87 35 – 185 35 – 185 Output, Heating medium pump 7 – 67 7 – 67 7 – 67 7 – 67 7 – 67 Enclosure class IP21 Chapter 8 | Technical specifications F1245...

  • Page 75: Miscellaneous

    1.0 (10 bar) heater Capacity hot water heating (comfort mode Normal) According to EN16147 Amount of hot water (40 °C) (load profile XL), 1x230V (load profile XL), 3x230V (load profile XL), 3x400V Dimensions and weight F1245 Chapter 8 | Technical specifications...

  • Page 76: Working Range Heat Pump, Compressor Operation

    Incoming brine temp, °C Incoming brine temp, °C Köldbärare in, temperatur Köldbärare in, temperatur Köldbärare in, temperatur Köldbärare in, temperatur Framledning Framledning Flow pipe Framledning Framledning Flow pipe Return pipe Returledning Returledning Return pipe Returledning Returledning Chapter 8 | Technical specifications F1245...

  • Page 77: Item Register

    Safety information Removing the covers, 51 Marking, 4 Top panel, 51 Serial number, 4 Compressor heater, 19 Symbols on F1245, 4 Compressor protection, 18 Serial number, 4 Compressor heater, 19 Service actions High pressure switch, 18 Drawing out the cooling module, 51...
  • Page 80 WS name: -Gemensamt WS version: a376 WS release date: 2017-05-17 08:20 Publish date: 2017-05-31 10:00 NIBE AB Sweden Hannabadsvägen 5 Box 14 SE-285 21 Markaryd info@nibe.se www.nibe.eu...

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