Error on ACQUITY SQD2: Source Pressure Exhaust Warning/Trip - WKB29632

SYMPTOMS

• Error message on the console "Source Pressure Exhaust Warning / Trip"
• The MS will not go into Operate mode
• Tune page readbacks show a positive value, even with desolvation gas flow set to zero and API nitrogen gas switched off

ENVIRONMENT

• SQ Detector 2
• Xevo TQD
• Xevo TQ-S cronos
• Xevo TQ-S micro
• Xevo TQ MS
• Xevo TQ-S
• Xevo TQ-XS
• Xevo TQ Absolute
• Xevo TQ Absolute XR 

CAUSE

Faulty source pressure sensor

FIX or WORKAROUND

Replace the source pressure sensor (700004196 - PRESSURE SENSOR PCB ASSY).   

ADDITIONAL INFORMATION