Flexit ECONORDIC Maintenance Manual
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Flexit ECONORDIC Maintenance Manual

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Heat pump - Maintenance Guide
IMPORTANT
Please keep this document
Thank you for choosing a FLEXIT product. This document is intended for FLEXIT's
technicians. It provides essential information to complete the required installation work, in
order to ensure the equipment's optimum and safe operation.
ECONORDIC
117181EN-04
2019-06

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Summary of Contents for Flexit ECONORDIC

  • Page 1 Heat pump - Maintenance Guide IMPORTANT Please keep this document Thank you for choosing a FLEXIT product. This document is intended for FLEXIT’s technicians. It provides essential information to complete the required installation work, in order to ensure the equipment’s optimum and safe operation.
  • Page 2 Revision History Date Designed Revision Content 16/08/2018 Q. Castel creation 8/03/2018 Q.Castel /J. Desno Overall revision 08/06/2018 J Desno >§8 & §9 PCB syst & INV cable colors rewieved >§1 list of spare parts : reference reviewed >§10 Thermistors : legend added 22/10/2018 J.Desno Management of the water pump reviewed:...

  • Page 3: Table Of Contents

    3.2 WATER PUMP REASSEMBLY ......................12 3.3 HOW TO CHANGE THE WATER PUMP CABLE ? ................15 4. HOW TO CHANGE THE FLEXIT’S DOOR? ..................16 4.1 REMOVE THE FLEXIT’S DOOR ...................... 16 4.2 REASSEMBLE THE FLEXIT’S DOOR ....................16 5.
  • Page 4 6. HOW TO CHANGE THE FAN ? ..................... 31 6.1 DISCONNECT THE FAN CABLES ....................32 6.2 REMOVE THE AERAULIC CIRCUIT 0030 ..................33 6.3 HOW TO REMOVE THE FAN? ....................... 33 6.4 FAN REASSEMBLY ........................35 6.5 AERAULIC CIRCUIT 0030 REASSEMBLY ..................37 6.6 CONNECT THE ELECTRIC FAN CABLES ..................

  • Page 5: List Of Spare Parts

    1. SPARE PARTS INFORMATION: For a complete list of spare parts please visit the Flexit Web site: www.flexit.com aintenance Guide – Econordic heat pump...

  • Page 6: How To Change The Complete Heat Pump Unit

    Pull the connector outward as shown on the picture hereafter. STEP 2 : Disconnect the water pump cable (§ 3.1) STEP 3 : Disconnect the Modbus cable from the electric terminal of the Econordic product. Modbus (grey) aintenance Guide – Econordic heat pump...

  • Page 7: Disconnect The Condensate Connection

    STEP 1 : To disconnect the condensation hose, pull down the drain hose (1) then turn to fitting to the left (2) as shown on the picture hereafter. CONDENSATION PIPE LOCATION HEAT PUMP VIEW FROM BELOW aintenance Guide – Econordic heat pump...

  • Page 8: Disconnect The Water Connections

    To disconnect the heat pump from the water supply, turn the two flexible hoses the left as shown in the picture hereafter. WATER PIPES LOCATION 2.4 DISCONNECT THE AIR CONNECTIONS Air duct STEP 1: Disconnect the air ducts. Heat pump aintenance Guide – Econordic heat pump...

  • Page 9: Remove The Heat Pump Unit

    RAILS OF THE G3 PRODUCT HEAT PUMP VIEW FROM BELOW Hooks STEP 1: Pull the heat pump unit toward you by sliding it. IMPORTANT: Two persons are required for this operation. Use protection gloves ! aintenance Guide – Econordic heat pump...

  • Page 10: How To Change The Water Pump

    WATER PUMP hot water tank. WATER PUMP OVERVIEW 1. Inlet water pipe 2. Quick fastener 3. Water pump body 4. Quick fastener 5. Outlet water pipe 6. Electrical connector 7. Fixation screws location aintenance Guide – Econordic heat pump...
  • Page 11 STEP 2: 1. Remove the inlet water pipe (1) 2. Remove the outlet water pipe (5) STEP 3: 1. Remove the two fixation screws. 2. Turn the pump in order to access the electrical connector. aintenance Guide – Econordic heat pump...

  • Page 12: Water Pump Reassembly

    1/ Check that the connector is dry : check if water remains in the connector, on both sides : pin side and cable side IT’S HIGHLY RECOMMENDED to use an anti humidity spray to remove humidity (Spray dedicated electrical circuits connectors) aintenance Guide – Econordic heat pump...
  • Page 13 Caution : the cable connector is located behind the water pump, inside the tank unit (EcoNordic W4 product only). You may use a mirror or a picture from a mobile phone to complete that checking STEP 1:...
  • Page 14 2. Reinsert the outlet water pipe in the discharge side of the water pump. STEP 4: 1. Install the two quick fasteners 16 - 25 2. Open the water valve. aintenance Guide – Econordic heat pump...

  • Page 15: How To Change The Water Pump Cable

    Disassemble the front panel (§ 5.1.). STEP 5: Disassemble the cooling fan (§ 7.2). STEP 6: Disconnect the water pump cable from the system PCB by unclipping it. Water pump cable location in the system PCB aintenance Guide – Econordic heat pump...

  • Page 16: How To Change The Flexit's Door

    1. Place the door on its location as show on the picture hereafter. 2. Fasten the three screws located on the top cover as shown on the 3D view below. HEAT PUMP VIEW FROM THE TOP aintenance Guide – Econordic heat pump...

  • Page 17: How To Change The Panels

    Remove the right panel by unscrewing the two screws M4x10. • The screw on the front side is located in the bottom right corner. • The screw of the back side is located in the bottom left corner. FRONT SIDE BACK SIDE aintenance Guide – Econordic heat pump...
  • Page 18 Use the handle which is located at the top left of the part. STEP 4: Disconnect the two earth cables by hand or with a flat plier. Use a flat plier to remove the earth cables. aintenance Guide – Econordic heat pump...

  • Page 19: Front Panel Reassembly

    5.1.2 FRONT PANEL REASSEMBLY STEP 1: Pass the cables through the protection location. Continue with unfastening the bottom side of the front panel and the upper side. aintenance Guide – Econordic heat pump...
  • Page 20 PCB casing before you fasten the screws. STEP 3: Connect the two earth cables by hand or with a flat plier. Connect cables before inserting them into the cable path. aintenance Guide – Econordic heat pump...
  • Page 21 Make sure that all electrical cables (modbus + water pump harness + grounding cables) are inserted into their cable path. STEP 5: 1. Fasten the two plate brackets. (Torx T20 tip) 2. Connect power supply cable + Modbus cable + water pump cable harness. aintenance Guide – Econordic heat pump...
  • Page 22 STEP 7: 1. Fasten the screw on the front side of the metal casing. 2. Fasten the screw on the back side of the metal casing. aintenance Guide – Econordic heat pump...

  • Page 23: Right Panel

    Remove the right panel by sliding it toward the front of the unit. To facilitate the handling, push up the top panel slightly, pull the left corner towards you and then slide it gently out. aintenance Guide – Econordic heat pump...

  • Page 24: Right Panel Reassembly

    1. Push alternately the upper and lower corner of the panel into the unit. Place one hand on the front panel and the other on the rear panel and push the panel into the correct position. aintenance Guide – Econordic heat pump...

  • Page 25: Top Panel

    Push the two corners as shown on the picture hereafter. STEP 3: Then, finish to remove the top panel on the left side. Push the two corners as shown on the picture hereafter. aintenance Guide – Econordic heat pump...

  • Page 26: Top Panel Reassembly

    IMPORTANT : Ensure there is no space between the top panel and the side panels. Don’t hesitate to push strongly on the edge of the top panel. aintenance Guide – Econordic heat pump...

  • Page 27: Assembly Of The Gaskets Of Top Panel

    5.3.4 ASSEMBLY OF THE TOP PANEL DUCT FITTINGS STEP 1 : Insert the two ducts fitting in the air inlet and air outlet of the top panel. Place the positioning marker in the track of the top panel. aintenance Guide – Econordic heat pump...

  • Page 28: Rear Panel

    Remove the top panel (§ 5.3.1). STEP 3 : Pull the rear panel slightly by the two upper corners. Avoid too angle the rear panel to much since there is a risk of breaking the lower part. aintenance Guide – Econordic heat pump...

  • Page 29: Rear Panel Reassembly

    RIGHT PANEL VIEW STEP 2 : Press strongly on the front and rear panel at the same time to avoid a gap between the parts. Make sure there is no gap remaining between the parts. aintenance Guide – Econordic heat pump...

  • Page 30: Left Panel

    Remove the top panel (§ 5.3.1). STEP 3: Remove the left panel by pulling slightly on the left side to disassemble the exhaust air duct. Then, pull gently at the left panel upper side. aintenance Guide – Econordic heat pump...

  • Page 31: Left Panel Reassembly

    Disconnect the electric supply to the product before you change the fan. FAN OVERVIEW 1. Fan 2. Spacer 3. Fan bracket 4. Screws M 4 x 16 5. Aeraulic circuit 0020 6. Aeraulic circuit 0030 7. Fan cable aintenance Guide – Econordic heat pump...

  • Page 32: Disconnect The Fan Cables

    Disconnect the fan cables by pressing the two clamps shown hereafter. Hold the connectors in a firm grip during operation, order avoid damages to the cables. FAN CABLES Press the 2 clamps to disconnect the fan cable aintenance Guide – Econordic heat pump...

  • Page 33: Remove The Aeraulic Circuit 0030

    (1) below. Secondly, pull the lower part toward you (2). Third, pull down the fan housing (3). IMPORTANT: Check that the other part of the housing is not separated from the remaining parts. aintenance Guide – Econordic heat pump...
  • Page 34 Hold the fan during removal of the screws. 2. Remove the spacer by unclipping the two clamps as shown in picture 1 and 2. IMPORTANT: Keep the fan in the left hand when unclipping the clamps. aintenance Guide – Econordic heat pump...

  • Page 35: Fan Reassembly

    6.4 FAN REASSEMBLY STEP 1: Pass the two fan cables slightly through the fan bracket. IMPORTANT: Find the correct angle to push the connector through the bracket. Do not force. aintenance Guide – Econordic heat pump...
  • Page 36 Clip the spacer on the fan bracket by introducing the two clamps in the corresponding holes bracket as shown in the view below. IMPORTANT: Handle the parts with care, since the two clamps are fragile. aintenance Guide – Econordic heat pump...

  • Page 37: Aeraulic Circuit 0030 Reassembly

    3D view hereafter. To reinsert the fan housing, insert the upper side first, as shown in picture(1). Push the lower part into the right position(2). Finally, push the left side into its housing (3). aintenance Guide – Econordic heat pump...

  • Page 38: Connect The Electric Fan Cables

    Connect the fan cable by pressing the clamps. STEP 2 : Reassemble the right panel (§ 5.2.2) STEP 3 : Reassemble the front panel (§ 5.1.2) STEP 4 : Reassemble the door (§ 4.2) aintenance Guide – Econordic heat pump...

  • Page 39: How To Change Fan Cooling

    Position the cooling fan on the fan bracket. STEP 3: COOLING FAN REAR VIEW 1. Insert the two rivets in their location as shown on the image hereafter. 2. Finalize assembly pressing the locking pins into position. aintenance Guide – Econordic heat pump...

  • Page 40: Fan Cooling Disassembly

    CONNECTOR Disconnect the cooling fan cable harness. STEP 4: Remove the three screws. Use a magnetized screwdriver to avoid losing screws inside the PCB casing. Start by removing the two screws on the top aintenance Guide – Econordic heat pump...

  • Page 41: Fan Cooling Reassembly

    3D view hereafter. IMPORTANT: The left fixation part of the fan bracket must be placed between water pump cable (1) and the fan cable (2) as shown in the picture hereafter. aintenance Guide – Econordic heat pump...
  • Page 42 Start fastening the screw in the bottom. STEP 3: Connect the cooling fan cable harness. COOLING FAN CONNECTOR STEP 4: Reassemble the FRONT PANEL (§ 5.1.2) STEP 5: Reassemble the FLEXIT’s door (§ 4.2) aintenance Guide – Econordic heat pump...

  • Page 43: How To Change System Pcb

    POWER SUPPLY CABLE 0000 CN112 CN003 F0702- CN001 40010 F0703-10000 F0710-40010 TERMINAL BLOCK ASSY 0000 COMMUNICATION CABLE 0010 CN301 CN302 F0702-40020 WIRE 0020 CN004 INV PCB ASSEMBLY 40105-11510T CN006 F0711-40020 COMPRESSOR CABLE 0020 CN100 CN005 F4501-40000 REACTOR aintenance Guide – Econordic heat pump...
  • Page 44 HEATER CORD 0000 F3106-40010 SYSTEM PCB ASSEMBLY EXPANSION VALVE COIL 40105-11521T F0702- F0714-40000 40000 PRESSURE SWITCH CABLE 91101-45400T HEAT PUMP THERMISTOR F0710-40010 POWER SUPPLYCABLE 0010 F0710-40000 POWER SUPPLY CABLE 0000 F2815- 40010 F0710-40010 COMMUNICATION CABLE aintenance Guide – Econordic heat pump...

  • Page 45: System Pcb Reassembly

    8.2 SYSTEM PCB REASSEMBLY STEP 1: Place the SYSTEM PCB in the right position. To install the SYSTEM PCB, insert slightly the left side first. Use the pins to center the PCB. aintenance Guide – Econordic heat pump...
  • Page 46 HEATER CORD 0000 F3106-40010 SYSTEM PCB ASSEMBLY EXPANSION VALVE COIL 40105-11521T F0702- F0714-40000 40000 PRESSURE SWITCH CABLE 91101-45400T HEAT PUMP THERMISTOR F0710-40010 POWER SUPPLYCABLE 0010 F0710-40000 POWER SUPPLY CABLE 0000 F2815- 40010 F0710-40010 COMMUNICATION CABLE aintenance Guide – Econordic heat pump...
  • Page 47 STEP 4: Reassemble the fan cooling (§ 7.3). STEP 5: Reassemble the front panel (§ 5.1.2). STEP 6: Reassemble the door (§ 4.2). aintenance Guide – Econordic heat pump...

  • Page 48: How To Change Inverter Pcb

    F0710-40010 force to be removed. POWER SUPPLYCABLE 0010 F0710-40000 POWER SUPPLY CABLE 0000 F0702- 40010 F0710-40010 F0703-10000 COMMUNICATION CABLE TERMINAL BLOCK ASSY 0000 F0702- 40020 INV PCB ASSEMBLY 40105-11510T F0711-40020 COMPRESSOR CABLE F4501-40000 REACTOR aintenance Guide – Econordic heat pump...

  • Page 49: Inverter Pcb Reassembly

    . 9.2 INVERTER PCB REASSEMBLY STEP 1: Place the INVERTER PCB in the correct position. install INVERTER PCB, insert slightly the left side first. Use the pins to center the PCB. aintenance Guide – Econordic heat pump...
  • Page 50 Connect all cables from N°1 to N°7. F0702- 40000 F0710-40010 POWER SUPPLYCABLE 0010 F0710-40000 POWER SUPPLY CABLE 0000 F0702- 40010 F0710-40010 F0703-10000 COMMUNICATION CABLE TERMINAL BLOCK ASSY 0000 F0702- 40020 INV PCB ASSEMBLY 40105-11510T F0711-40020 COMPRESSOR CABLE F4501-40000 REACTOR aintenance Guide – Econordic heat pump...
  • Page 51 STEP 4: Reassemble the PCB protection (§ 5.1.1 step 4) STEP 5: Reassemble the door (§ 4.2) aintenance Guide – Econordic heat pump...

  • Page 52: How To Change The Heat Pump Thermistors

    10. TEMPERATURE SENSOR REPLACEMENT TEMPERATURE SENSOR OVERVIEW 1. Air inlet sensor 2. CO₂ Discharge sensor (the shorter) 3. Defrost sensor (the longer) 4. Water outlet sensor (red mark) 5. Water inlet sensor (white mark) Sensor holder aintenance Guide – Econordic heat pump...
  • Page 53 STEP 1 : Remove the door (§ 4.1) STEP 2: Remove the heat pump from the Econordic product (§ 2.5) STEP 3 : Remove the right metal casing by removing the two screws located at the bottom of the heat pump as shown on the picture below.
  • Page 54 STEP 7 : Remove the left panel (§ 5.5.1) STEP 8 : Remove the five sensors from their location (see § 10. Temperature sensor overview) IMPORTANT: Make sure not to lose thermistor fixing bracket. aintenance Guide – Econordic heat pump...
  • Page 55 STEP 9 : Disconnect the connector from the SYSTEM PCB. SYSTEM PCB ASSEMBLY 40105-11521T STEP 10: Remove the sensor cable harnesses from the sensor holder. Sensor holder aintenance Guide – Econordic heat pump...

  • Page 56: Thermistors Curves

    10.1 THEMPERATURE SENSOR CURVES Air sensor R (kΩ) Temperatures °C Discharge sensor R (KΩ) Temperatures °C aintenance Guide – Econordic heat pump...
  • Page 57 Gas Cooler sensor R (kΩ) Temperatures °C Defrost sensor R (kΩ) Temperatures °C aintenance Guide – Econordic heat pump...

  • Page 58: How To Check The Expansion Valve Coil Position

    Remove the door (§ 4.1) STEP 2: Remove the front panel (§ 5.1.1) STEP 3: Check the position of the expansion valve coil as shown in the pictures below. The clip must be fixed properly to the pipe aintenance Guide – Econordic heat pump...

  • Page 59: How To Check The Pressure Switch Connection

    Remove the door (§ 4.1) STEP 2: Remove the front panel (§ 5.1.1) STEP 3: Check that the connectors are properly attached to the pressure switch as shown in the pictures below. Check that connectors are properly attached aintenance Guide – Econordic heat pump...

  • Page 60: How To Clean The Gas Cooler

    Check that the height of the foam does not exceed the maximum fill line The descaling process can be considered complete when no more bubbles is forming in the return hose and the liquid is still acidic (pH to be checked) aintenance Guide – Econordic heat pump...

  • Page 61: How To Change The Packaging

    STEP 3: Remove the top cover. Remove vertically the top cover by using one hand on the left side and one hand on the right side. STEP 4: Remove the belt by pulling it Belt aintenance Guide – Econordic heat pump...
  • Page 62 Remove the two internal wedges 30 located on the left and right side of heat pump. Internal wedges 30 Remove cover vertically by using one hand on the left side and one hand on the right side. aintenance Guide – Econordic heat pump...

  • Page 63: Annexes

    2 Thermistor 45400 code 3 code 4 Thermistor 91101- CN105 see sensor table code 5 resistance 45400 code 11 Drain pan heater code TBC System PCB/ F4503- CN102 AC230V±10% trouble Drain pan heater 40000 aintenance Guide – Econordic heat pump...
  • Page 64 Modbus System PCB/ F0717- CN110 Bus RS485 Communications G3 product 40000 DC12V±5% error Fan Power supply cable at terminal blocks PCB INV Power supply aintenance Guide – Econordic heat pump...
  • Page 65 15.2 LED information The green & red LED:s are located on the SYSTEM PCB The green LED is located on the INVERTER PCB SYSTEM PCB LED Green LED Red Power off Initialisation phase after power on (30s) Standby mode Operating mode Blinking Error mode Blinking...

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