Related information
2.3.3 Connecting the pump supply and power supply
8.3 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 Remedy
The pump has been blocked or
partly blocked causing overload
in the motor.
• Remove the blockage from
the pump.
Related information
6.12 Setting the maximum number of restarts with Grundfos GO
Remote
8.4 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 Remedy
The power supply phase is set
incorrectly.
• Interchange two phases.
Related information
2.3.3 Connecting the pump supply and power supply
8.5 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
Remedy
The pump requires service
based on time to next service
countdown.
• 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
8.6 Code 22 (Moisture in motor of pump)
• Alarm code 22 is shown on the display.
• The alarm symbol on the display turns red and the pump stops.
• Alarm code Moisture in motor of pump is displayed in
Grundfos GO Remote.
Cause
Remedy
Moisture is detected in the
motor of the pump.
• Service is needed on the
pump. Contact Grundfos.
8.7 Code 25 (Wrong configuration)
• Alarm code 25 is shown on the display.
• The alarm symbol on the display turns red and the pump stops.
• Alarm code Wrong configuration is displayed in Grundfos GO
Remote.
Cause
Remedy
The level control is not
configured correctly.
• Check and adjust the level
control configuration with
Grundfos GO Remote.
Cause Remedy
The IO terminal is not
configured correctly.
• Select which IO terminal to
change in Grundfos GO
Remote and adjust the
configuration.
Related information
3.6 Configuring the IO terminals using Grundfos GO Remote
8.8 Code 26 (Contactor shorted)
• Alarm code 26 is shown on the display.
• The alarm symbol on the display turns red but the pump's
operating mode is unchanged.
• Alarm code Contactor shorted is displayed in Grundfos GO
Remote.
Cause Remedy
The contactor melts due to
motor overload and the pump is
unable to stop.
• Replace the control unit.
8.9 Code 48 (Motor is overloaded)
• Alarm code 48 is shown on the display.
• The alarm symbol on the display turns red and the pump stops.
• Alarm code Motor is overloaded is displayed in Grundfos GO
Remote.
Cause
Remedy
The pump is clogged.
The blockage causes the motor
current to rise, which could
damage the pump.
• Remove the blockage.
• Check the pit conditions to
ensure blockage is not
possible again.
Related information
6.15.2 Overload protection
8.10 Code 51 (Blocked)
• Alarm code 51 is shown on the display.
• The alarm symbol on the display turns red and the pump stops.
• Alarm code Blocked is displayed in Grundfos GO Remote.
Cause
Remedy
The pump is blocked.
The pump cannot rotate due to
a blockage.
• Dismantle the pump by
removing the pump head, and
remove any blockage or
impurities preventing the
pump from rotating.
• Check the water quality to
eliminate the risk of lime
precipitation.
Before dismantling the pump,
drain the system or close the
isolating valves on either side
of the pump. The pumped
liquid may be scalding hot and
under high pressure.
Related information
6.15.4 Setting the motor protection with Grundfos GO Remote
8.11
Code 56 (Underload, current sensor measures a
value too low)
• Alarm code 56 is shown on the display.
• The alarm symbol on the display turns red and the pump stops.
• Alarm code Underload, current sensor measures a value too
low is displayed in Grundfos GO Remote.
Cause
Remedy
The measured current is too
low.
• Make sure that the nominal
pump current is configured
correctly in Grundfos GO
Remote.
20
English (GB)
To Next Page
Loading...
Need help?
General
