Remedy • Replace the control unit.
• Contact Grundfos or an
authorised service workshop.
8.16 Code 85 (Internal fault)
• Alarm code 85 is shown on the display.
• The alarm symbol on the display turns red and
the pump stops.
• Alarm code Drive unit memory fault is
displayed in Grundfos GO Remote.
Cause Internal memory fault.
Remedy • Contact Grundfos or an
authorised service workshop.
8.17 Code 117 (Door opened)
• Warning code 117 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 Door opened is displayed in
Grundfos GO Remote.
Cause The door to the control-unit
room has been opened.
Remedy • Check the room with the
control unit.
8.18 Code 159 (Communication error
CIMxxx)
• Warning code 159 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 Communication error CIMxxx is
displayed in Grundfos GO Remote.
• The CIM module is unable to communicate with
the product.
Cause
The CIM module is installed
incorrectly.
Remedy • Ensure that the module,
including cables, is fitted
correctly.
Cause The CIM module is defective.
Remedy • Contact Grundfos.
Related information
2.2.4 Installing a communication interface module
8.19 Code 163 (Drive unit configuration
fault)
• Alarm code 163 is shown on the display.
• The alarm symbol on the display turns red, but
the pump's operating mode is unchanged.
• Alarm code Drive unit configuration fault is
displayed in Grundfos GO Remote.
Cause The configuration of the motor-
drive unit is incorrect.
Remedy • Reconfigure the phase setting
on the unit using Grundfos GO
Remote.
8.20 Code 165 (Signal fault)
• Alarm code 165 is shown on the display.
• The alarm symbol on the display turns red and
the pump stops.
• Alarm code Signal fault is displayed in Grundfos
GO Remote.
Cause The signal from the sensor is
out of the configured range.
Remedy • Go to Settings > Level
Control in Grundfos GO
Remote and ensure that the
configured range corresponds
to the physical application
type.
• Change the sensor, if needed.
8.21 Code 191 (High water level)
• Alarm code 191 is shown on the display.
• The alarm symbol on the display turns red, but
the pump's operating mode is unchanged.
• Alarm code High water level is displayed in
Grundfos GO Remote.
Cause
The defined start level did not
start the pump.
Remedy • Check and configure the
sensor for start level.
Cause The pump is not big enough to
remove the water.
Remedy • Contact Grundfos or an
authorised service workshop.
Cause The level sensor is defective and
not reacting on level changes.
Remedy • Check the functionality of the
level sensor.
26
English (GB)
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