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.

The pump has detected an internal fault where different circuit boards inside the pump have lost connection to each other. This is a critical internal error.

The pump has detected that its rotor is blocked, causing it to stop operation. It will automatically attempt to restart. This can happen if the pump has been inactive for a long time.

The pump has detected an internal fault, causing it to stop operation and display a red light. It will automatically attempt to restart. This can be caused by unusual flow patterns or power issues.

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.

The Grundfos Eye status indicator light is showing an alarm. This signifies a critical fault that may have caused the pump to stop or prevent it from running. Immediate action is usually required.

The Grundfos Eye status indicator light is showing a warning. This means the pump is operating outside optimal parameters or an issue requires attention, but the pump may still be running.

When you try to connect your Grundfos MAGNA3 pump to the Grundfos GO Remote app, the center LED of the Grundfos Eye flashes. This means the pump is looking for a Bluetooth connection. If the LED keeps flashing and doesn't become solid, it indicates a problem establishing the connection.

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 pump's external signal relay (Relay 1, if configured as Alarm) has activated, indicating that the pump has registered a fault. This signal is typically sent to an external building management system (BMS) or alarm panel.

The pump's external signal relay (Relay 2, if configured as Ready) is not activated, indicating that the pump has registered a fault and is unable to run. This signal is typically sent to an external building management system (BMS) or control panel.

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 two pumps in a multi-pump system have lost their radio connection with each other. Both pumps will continue to operate based on their own local settings.

The pump is detecting an issue with its internal sensor. It will continue to operate, but a yellow light will indicate this warning. The sensor might be blocked or faulty.

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.