Error messages

Displays an error message on the display

The status display will be in red colour.
Error message, error code (E...), cause and remedy are described as text.

Error messages displayed on the LED display with seven segments

An error code (E...) is displayed.

The pump is not operational if an error has occurred. If the pump identifies as part of permanent monitoring that the cause of the error no longer applies, the error message is revoked and operation resumes.

If an error message is output, the display is permanently on and the green LED indicator is off.

Error messages
Code	Fault	Cause	Remedy
401	Unstable power supply	Unstable power supply.	Check power supply.
401	Additional information about causes and remedy: Power supply too unstable. Operation cannot be maintained.
402	Undervoltage	Power supply is too low.	Check power supply.
402	Additional information about causes and remedy: Operation cannot be maintained. Possible causes 1. Mains overloaded 2. Pump is connected to the wrong power supply 3. Three-phase power supply is unsymmetrically loaded by unevenly connected single-phase consumers.
403	Overvoltage	Power supply is too high.	Check power supply.
403	Additional information about causes and remedy: Operation cannot be maintained. Possible causes: 1. Pump is connected to the wrong power supply 2. Three-phase power supply is unsymmetrically loaded by unevenly connected single-phase consumers.
404	Pump blocked.	Mechanical influence is inhibiting the rotation of the pump shaft.	Check free movement of rotating parts in the pump head and motor. Remove deposits and foreign substances.
404	Additional information about causes and remedy: In addition to deposits and foreign bodies in the system, the pump shaft can also be tilted and blocked by heavy bearing wear.
405	Electronic module too hot.	Permissible temperature of the electronic module is exceeded.	Ensure permissible ambient temperature. Improve room ventilation.
405	Additional information about causes and remedy: Adhere to permissible installation position and minimum distance from insulation and system components to ensure sufficient ventilation.
406	Motor too hot.	Permissible motor temperature is exceeded.	Ensure permissible ambient and fluid temperature. Ensure motor cooling with unobstructed air circulation.
406	Additional information about causes and remedy: Adhere to permissible installation position and minimum distance from insulation and system components to ensure sufficient ventilation.
407	Connection between motor and module interrupted.	Electrical connection between motor and module faulty.	Check the motor module connection.
407	Additional information about causes and remedies: Dismantle the electronic module to check the contacts between module and motor.
408	There is flow through the pump in the opposite direction of flow.	External influences cause flow through against direction of flow of the pump.	Check power control of the pumps, install swing check valve if needed.
408	Additional information about causes and remedy: If flow passing through pump in the opposite direction is too strong, the motor can no longer start.
409	Incomplete software update.	The software update was not completed.	Software update with a new software bundle is required.
409	Additional information about causes and remedy: The pump can work only once the software update has been completed.
410	Analogue / digital input overloaded.	Voltage of analogue / digital input short-circuited or too heavily loaded.	Check cable and consumers connected to power supply of analogue / digital input for short-circuit.
410	Additional information about causes and remedy: The fault impairs the binary inputs. EXT. OFF is set. The pump is stationary. The power supply is the same for analogue and digital input. In case of overvoltage, both inputs are overloaded equally.
420	Motor or electronic module defective.	Motor or electronic module defective.	Replace motor and/or electronic module.
420	Additional information about causes and remedy: The pump cannot determine which of the two components is faulty. Contact service.
421	Electronic module is defective.	Electronic module is defective.	Replace electronic module.
421	Additional information about causes and remedy: Contact service.