Wilo Helix VE Pumps
24 fault codes documented
E followed by 3 digits - Fault page displayed
When one or more faults occur, the display shows the fault page. This includes the letter 'E' followed by a three-digit code representing the specific fault.
E001 - Pump overload
The pump is experiencing an overload condition, likely due to the liquid being pumped being too thick or containing obstructions. The red LED will light up.
E004 (E032) - Low converter supply voltage
The voltage supplied to the converter has dropped too low (below 330V). The red LED will light up.
E005 (E033) - High converter supply voltage
The voltage supplied to the converter has risen too high (above 480V for 0.55-7.5 kW, or 506V for 11-22 kW). The red LED will light up.
E006 - Missing supply phase
One of the power supply phases to the converter is missing. The red LED will light up.
E007 - Generator mode warning
The converter is operating like a generator. This is a warning, and the pump is not stopped. Check the non-return valve for tightness.
E010 - Pump locked
The pump is locked and cannot operate. This may be due to a mechanical failure. The red LED will light up.
E011 - Pump not primed or running dry
The pump is not filled with liquid or is running dry. The red LED will light up. You may need to prime the pump.
E020 - Motor overheating
The motor is overheating. This could be due to blocked cooling ribs or high ambient temperature. The red LED will light up.
E023 - Motor short-circuit
A short-circuit has been detected in the motor. The red LED will light up.
E025 - Missing phase at the motor
A power phase is missing between the motor and the converter. The red LED will light up.
E026 - Defective or disconnected motor thermal sensor
The thermal sensor for the motor is defective or not connected properly. The red LED will light up.
E030 - Converter overheating
The converter is overheating. This could be due to blocked cooling ribs, fan cover obstruction, or high ambient temperature. The red LED will light up.
E031 - Converter overheating
The converter is overheating. This could be due to blocked cooling ribs, fan cover obstruction, or high ambient temperature. The red LED will light up.
E042 - Sensor cable (4–20 mA) interrupted
The sensor cable (4–20 mA) has an interruption. The red LED will light up.
E050 - BMS communication time-out
The connection to the Building Management System (BMS) has timed out. The red LED will light up.
E070 - Internal communication fault
An internal communication fault has occurred within the pump system. The red LED will light up.
E071 - EEPROM error
An error has been detected in the EEPROM, which stores configuration data. The red LED will light up.
E072 - Problem inside converter
There is an internal problem within the frequency converter. The red LED will light up.
E075 - Inrush-current relay defective
The inrush-current relay, which manages the initial power surge, is defective. The red LED will light up.
E076 - Current sensor defective
The sensor that measures the current is defective. The red LED will light up.
E099 - Unknown pump type
The system does not recognize the type of pump connected. The red LED will light up. Power cycling may resolve this.
Red LED solid - Fault detected
A solid red LED indicates that a fault has been detected by the pump system. The specific fault code will be displayed.
Timer countdown then ' - - - ' - Fault requires manual acknowledgement
If a fault has a resolution time that extends beyond the initial signal (e.g., 300 seconds), the auto-reset timer will be inactive, displaying '- - -'. This means the fault must be acknowledged manually after it's resolved.