This problem is caused by running eluent through the Dionex DRS 600, Dionex ERS 500e, or Dionex AERS 500 Carbonate with the power off while using the AutoSuppression Recycle Mode or the AutoSuppression External Water Mode.
It may also be caused by application to too little current to the suppressor for an extended period of time.
A regeneration protocol is needed to ensure good operation.
NOTE
The Dionex AERS 500 Carbonate suppressor has different electrical current requirements than the Dionex ADRS 600 and Dionex AERS 500e suppressors. If an AERS_Carbonate mode is not available, the current applied to a Dionex AERS 500 Carbonate should be adjusted by a factor of 1.30 compared to a standard ADRS 600 suppressor. Chromeleon 7.2 SR3 MUa and later versions have an option for selecting an AERS_Carbonate suppressor in the Instrument Method Wizard and Editor dialog box. Selecting this suppressor from the drop-down list will automatically apply the recommended current setting for Dionex AERS 500 Carbonate suppressors.
See the following topics for more information: