Grundfos LC 231 - Replacing the CIM Module; 8 Fault Finding the Product; Overview of Alarm and Warning Codes; Code 2 (Power Phase Missing)

7.3 Replacing the CIM module
WARNING
Electric shock
Death or serious personal injury
‐ Switch off the power supply before
making any electrical connections.
‐ Make sure that the power supply
cannot be switched on accidentally.
1. Switch off the power supply to the product and
other components with external supply.
2. Write down the terminal connection of each wire
to ensure correct re-connection.
3. Disconnect all wires connected to the CIM
module.
4. Remove the screws that holds the module.
5. Remove the module from the control unit.
6. Fit the new module.
7. Connect all wires.
8. Fault finding the product
WARNING
Electric shock
Death or serious personal injury
‐ Switch off the power supply before
you start any work on the product.
‐ Make sure that the power supply
cannot be switched on accidentally.
Fault finding and fault correction must be carried out
by qualified persons.
8.1 Overview of alarm and warning codes
Code number
Description
Code 2
The power phase is
missing.
Code 4 Too many motor restarts.
Code 9
The power-phase
sequence is wrong.
Code 12 Service is needed.
Code 22
Moisture in motor of
pump.
Code 25 Wrong configuration.
Code 26 Contactor is shorted.
Code 48 The motor is overloaded.
Code number Description
Code 51 The pump is blocked.
Code 57
Missing water in the
application.
Code 69
The winding temperature
is too high.
Code 72 Internal fault.
Code 76 Internal fault.
Code 84
The memory-storage
media is faulty.
Code 85 Internal fault.
Code 117 The door is opened.
Code 159
Communication error
CIMxxx.
Code 163 Internal fault.
Code 165 Signal fault.
Code 191 High water level.
Code 205
Level-switch
inconsistency.
Code 220 Contactor wear out.
Code 229 Water on the floor.
8.2 Code 2 (Power phase missing)
• Alarm code 2 is shown on the display.
• The alarm symbol on the display turns red and
the pump stops.
• Alarm code Power phase missing is displayed
in Grundfos GO Remote.
Cause
One of the power supply phases
is not connected.
Remedy • Connect the phase.
Cause The fuse is blown somewhere on
the incoming power line.
Remedy • Replace the fuse.
Related information
2.3.3 Connecting the pump supply and power
supply
23
English (GB)