To Next PageTo Next PageWhy is pressure not ‘0’ after ZERO on VAT Control Unit?
If the pressure is not ‘0’ after performing ZERO on your VAT Control Unit, it could be due to: * Sensor voltage shifting. Wait until the sensor stabilizes before performing ZERO. * The system not being pumped to base pressure. OPEN VALVE and bring the chamber to base pressure before performing ZERO. * The sensor offset voltage exceeding ±1.4V. Replace the pressure gauge.
Why does the VAT Control Unit display show «E 22» (fatal error - rotation angle of valve plate limited during operation)?
The error «E 22» indicates that the rotation angle of the valve plate is limited during operation, possibly due to a heavily contaminated valve unit or a mechanical obstruction. Clean the valve unit or resolve the obstruction. You may also try resetting the control unit by cycling the power OFF and then ON, or by sending a reset command locally via the service port with CV/CPA/Service Box2.
Why does the VAT 64246-UEHC-0001 Control Unit display show «E 21» (fatal error - rotation angle of valve plate limited during power up)?
The error «E 21» means the rotation angle of the valve plate is limited during power up. This could be due to a valve plate that is not centric adjusted, a heavily contaminated valve unit, or a mechanically obstructed valve plate. Adjust the valve plate, clean the valve unit, or resolve any obstruction. Additionally, you can reset the control unit by cycling the power OFF and then ON, or send a reset command locally via service port with CV/CPA/Service Box2.
Why does VAT 64246-UEHC-0001 remote operation not work?
Remote operation of the VAT Control Unit might not work because local operation via the service port is active, or the safety mode is active (check for 'D' on the display). To resolve this, switch to remote operation and ensure the motor is powered. Refer to «Electrical connection» for details.
Why is my VAT 64246-UEHC-0001 Control Unit pressure reading wrong or negative?
A wrong or negative pressure reading can occur if the sensor(s) are not properly connected. Refer to «Electrical connection». It may also happen if you are using a 2 sensor version, so check the valve version and verify the configuration. Refer to «Setup procedure». Ensure that ZERO has been performed when base pressure is reached. Refer to «ZERO» for details. Verify the sensor supply voltage to ensure it provides enough power for the sensor(s).
Why is the pressure reading wrong or negative on my VAT Control Unit?
If the pressure reading on your VAT Control Unit is wrong or negative, check the sensor connections as described in «Electrical connection». Verify if a 2 sensor version is present at the valve controller and verify the configuration. Refer to «Setup procedure». Perform ZERO when base pressure is reached. Refer to «ZERO» for details. Also, verify the sensor supply voltage.
What to do if CLOSE VALVE does not work on VAT Control Unit?
If the CLOSE VALVE function is not working on your VAT Control Unit: * Check if safety mode is active (indicated by 'D' on the display) or if maintenance mode is active. Provide power to the motor to allow for operation. * Refer to «Electrical connection» for details. * Also, refer to the section for “Display shows «M C»” in this table.
What to do if OPEN VALVE does not work on VAT Control Unit?
If the OPEN VALVE function is not working on your VAT Control Unit: * Check if safety mode is active (indicated by 'D' on the display) or if maintenance mode is active. Provide power to the motor to allow for operation. * Refer to «Electrical connection» for details. * Refer to “Display shows «M100»” in this table.
Why VAT Control Unit OPEN VALVE does not work?
The VAT Control Unit OPEN VALVE function may not work if the safety mode is active (check for 'D' on the display) or if the maintenance mode is active. Provide power to the motor and refer to «Electrical connection» for details. Also, refer to “Display shows «M100»” in this table.
What does it mean when VAT Control Unit display shows «D 0» Motor Interlock is open?
If the display shows «D 0», it means the Motor Interlock is open. Ensure the motor is receiving power. Refer to «Electrical connection» for details.
General| Brand | VAT |
|---|---|
| Model | 64246-UEHC-0001 |
| Category | Control Unit |
| Language | English |
