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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
Code 2
Code 3
Code 4
Code 9
Code 12
Code 17
Code 22
Code 25
Code 46
Code 48
Code 57
Code 69
Code 84
Code 94
Code 95
Code 117
Code 130
Code 157
Code 159
Code 165
Code 181
Code 191
Code 205
Code 225
Code 226
Code 229
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
The product is configured for 2
or 3 phases but only 1 phase is
connected.
One of the power supply
phases is not connected.
Description
The power phase is missing.
External alarm via digital input.
Too many motor restarts.
The power-phase sequence is
wrong.
Service is needed.
Low performance.
Moisture in pump motor.
Wrong configuration.
External warning via digital in-
put.
The motor is overloaded.
Missing water in the application.
The winding temperature is too
high.
The memory-storage media is
faulty.
Limit exceeded 1.
Limit exceeded 2.
The door is opened.
Cable theft.
Real-time clock monitoring.
Communication error, CIM xxx.
Signal fault.
Signal fault, PTC input.
High water level.
Level-switch inconsistency.
Communication error, pump
module.
Communication error, IO mod-
ule.
Water on the floor.
Remedy
•
Make sure that the Mains
Power connection setting is
correct according to the
number of phases connected
(1, 2 or 3 phases).
•
Connect the phase.
Cause
The fuse is blown somewhere
on the incoming power line.
Related information
2.3.3 Connecting the pump supply and power supply
8.3 Code 3 (External alarm via DI)
•
Alarm code 3 is shown on the display.
•
The alarm symbol on the display turns red and the pump stops.
•
Alarm code External alarm from DI is displayed in Grundfos
GO Remote.
Cause
An external alarm is activated
via the digital input.
8.4 Code 4 (Too many motor restarts)
•
Alarm code 4 is shown on the display.
•
The alarm symbol on the display turns red and the pump stops.
•
Alarm code Too many motor restarts is displayed in Grundfos
GO Remote.
Cause
The pump has been blocked or
partly blocked causing overload
in the motor.
Related information
6.14 Setting the maximum number of restarts with Grundfos GO
Remote
8.5 Code 9 (Power phase sequence wrong)
•
Alarm code 9 is shown on the display.
•
The alarm symbol on the display turns red and the pump stops.
•
Alarm code Power phase sequence wrong is displayed in
Grundfos GO Remote.
Cause
The power supply phase is set
incorrectly.
Related information
2.3.3 Connecting the pump supply and power supply
8.6 Code 12 (Service needed)
•
Warning code 12 is shown on the display if you press
the Up or Down button.
•
The warning symbol on the display turns yellow and the pump's
operating mode is unchanged.
•
Warning code Service needed is displayed in Grundfos GO
Remote.
Cause
The pump requires service
based on time to next service
countdown.
8.7 Code 17 (Low system performance)
•
Warning code 17 is shown on the display if you press
the Up or Down button.
•
The warning symbol on the display turns yellow, and the pump's
operating mode is unchanged.
•
Warning code Performance requirement cannot be met is
displayed in Grundfos GO Remote.
Remedy
•
Replace the fuse.
Remedy
•
Check the device connected
to the external digital input.
Remedy
•
Remove the blockage from
the pump.
Remedy
•
Interchange two phases.
Remedy
•
Contact Grundfos or an
authorised service workshop.
•
In order for the product to
determine the service time,
you must have enabled the
service countdown with
Grundfos GO
Remote: Settings > Service
21
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