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ACQUITY CM-A Error: Column active preheater over-temp fuse h/w fault - WKB4114

Article number: 4114

SYMPTOMS

Error: Column active preheater over-temp switch h/w fault

Error: Column active preheater over-temp fuse h/w fault

Error: Column {x} active preheater sensor h/w fault

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ENVIRONMENT

  • ACQUITY UPLC
  • ACQUITY UPLC I-Class
  • ACQUITY UPLC H-Class
  • ACQUITY UPLC M-Class
  • Column Manager
  • CH-A

CAUSE

Faulty active preheater (APH)

FIX or WORKAROUND

Replace active preheater

ADDITIONAL INFORMATION

Use the correct APH for your model: What is the part number for the ACQUITY Active Preheater (APH)? - WKB7232

In certain cases the observed issue might be due to worn contact surfaces on the active preheater itself. Try to clean the contact surfaces before replacing the active preheater.

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