Grundfos MAGNA3 Pump

There is a communication problem between different electronic components inside the pump. The pump may automatically reset and restart once the fault is cleared.

Other pumps or external sources are forcing water flow through the MAGNA3 pump, even when the pump is stopped and switched off. This indicates an issue with the system's hydraulics.

The electrical supply voltage to the pump is below the specified operating range, which can prevent the pump from functioning correctly. The pump may automatically reset and restart once the fault is cleared.

The pump's internal components, such as the impeller, are physically blocked by foreign matter or impurities, preventing it from rotating. This fault does not reset automatically.

There is insufficient water at the pump inlet or too much air mixed with the water, causing the pump to run dry. This fault does not reset automatically.

The temperature inside the motor's stator windings has become excessively high, indicating that the motor is overheating. This fault does not reset automatically.

There is an internal fault within the pump's electronics system. The pump may automatically reset and restart once the fault is cleared.

The electrical supply voltage to the pump is above the specified operating range, which can potentially damage the pump's electronics. The pump may automatically reset and restart once the fault is cleared.

Communication between the two pump heads in a twin-head pump system is disturbed or broken. The pump may automatically reset and restart once the fault is cleared.

The pump's internal sensor is sending a signal that falls outside its normal operating range, indicating a potential sensor issue. The pump may automatically reset and restart once the fault is cleared.

The pump is receiving a signal from an external sensor that is outside the normal operating range. This could also mean the sensor has been removed but the analog input is still active.

This indicates that the pump's impeller or moving parts are physically blocked, preventing the pump from operating correctly. This can lead to reduced performance or complete stoppage.

This warning indicates that the pump is running without sufficient liquid in the system. Dry running can cause serious damage to the pump, including overheating and mechanical wear.

This fault indicates an issue with an external sensor connected to the pump, such as a temperature, pressure, or flow sensor. The pump relies on this sensor for specific control modes.

This indicates that the pump has been manually overridden to operate regardless of normal control signals or fault conditions. This mode is typically used for testing or specific maintenance.

This general fault indicates an issue within the pump's internal electronics or software that prevents it from functioning correctly. It requires attention to diagnose the specific problem.

This fault indicates that one of the pump's internal sensors (e.g., for temperature, pressure, or flow) is not providing valid readings or has failed. This can affect the pump's control and protective functions.

The Grundfos Eye indicator lights are off. This means the pump is either not receiving power or is not currently operating.

This fault indicates that the electrical supply voltage to the pump has risen above the acceptable operating range. Excessive voltage can damage the pump's electronics and motor.

This error means the pump is unable to communicate with its control system, a remote device, or other pumps in a multi-pump setup. This can prevent proper monitoring and control.

The Grundfos Eye shows two red lights flashing at the same time. This indicates that the pump has stopped because a critical alarm condition has been detected.

This fault indicates that the electrical supply voltage to the pump has dropped below the acceptable operating range. Insufficient voltage can lead to motor damage or unreliable operation.

The Grundfos Eye displays a single yellow light moving in the direction of pump rotation. This indicates that the pump is currently running but an operational warning has been detected.

The Grundfos Eye displays a single yellow light that is continuously on. This indicates that the pump has stopped operating due to a warning condition.