1135   Error: Malfunction on Gate valve open. Valve closed again.

The gate valve closes when the instrument is changing from Standby mode to Analysis Mode.

This could happen when the plasma goes off unexpectedly and the interlock system automatically closes the gate valve. If the gate valve closes while the plasma is ON, check the gate valve operation. The following are the probable causes.

• The optical cable of the plasma sensor came off.
• The optical cable of the plasma sensor is defective.
• The gate valve connector came off.
• There is a fault in the Connection PCA or solenoid valve on the gate valve.