1063   Error: ADS 2 Switching valve (Valve A or B ) error.

The ADS 2 switching valves (Valve A or B) has reported and error.

The following causes are inferred:

• The instrument operation has become unstable, Power Cycle and Initialize the ADS 2.
• The valve (A or B) is not installed.
• The valve (A or B) is not secured correctly.
• The valve (A or B) drive coupling is not installed.
• The valve (A or B) has seized or is obstructed in it's rotation.  Check and clean the valve rotor and stator
• The incorrect valve type has been fitted.
• The valve drive motor has failed.

Once corrected Power Cycle and Initialize the ADS 2 and Initialize.