Related information
6.15.1 Overheat protection
9.11 Code 84 (Memory storage media faulty)
• Warning code 84 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 Memory storage media faulty is displayed in Grundfos GO Remote.
Cause An error in the internal memory has been detected.
Remedy • Replace the control unit.
• Contact Grundfos or an authorised service workshop.
9.12 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.
9.13 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.
9.14 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.
9.15 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.
9.16 Code 205 (Level switch inconsistency)
• Alarm code 205 is shown on the display.
• The alarm symbol on the display turns red and the pump stops.
• Alarm code Level switch inconsistency is displayed in Grundfos GO Remote.
Cause
A float switch could be defective or stuck.
Remedy • Check the functionality of each float switch.
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