Agilent TwisTorr 305-IC Manuel De L'utilisateur page 196

Instructions for Use
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NOTE
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In case a Malfunction (Red LED, ON Solid light) is detected, the pump cannot
spin upon receiving the start command. The user can troubleshoot the reason
for the malfunction by checking the error messages via serial communication
and also referring to the list of suggested actions. While a malfunction is
detected, the electronic unit enters in the FAIL status; once the reason for the
fail has been trouble shooted, the units needs to receive a new start command
in order to reset the FAIL status. As a consequence, if the reason for the
malfunction has been solved, upon the receiving of the new START command,
the red led light status will be immediately turned off and the
TwisTorr 305-IC will operate properly, showing the status (on the serial comm.
and by the green led indications) which is appropriate to the current work
condition (RAMP, NORMAL, etc.).
In case a Warning (Yellow LED, ON Solid light) is detected, the pump can spin
properly upon receiving the start command. The user can troubleshoot the
reason for the warning by checking the error messages via serial
communication and also referring to the list of suggested actions. Upon the
detection of a warning condition, the unit continues to work with no
interruptions and showing the status (on the serial comm. and by the green
led indications) which is appropriate to the current work condition (RAMP,
NORMAL, etc..).
This because, warnings are not related to any blocking conditions for the
pump functionality. Once the reason for the warning has been solved, the
yellow led light will be immediately turned off, and in the majority
of the cases, the user do not need to perform any further action on the
TwisTorr 305-IC. Only in a very few cases, in order to properly reset the
warning signal, the user has to power off the unit.
In case of improper operations on the USB port, such as trying to operate the
electronics via the USB port and with the 24vdc power supply turned off, the
YELLOW and GREEN Leds will flash together, while the RED LED will show the
solid light. In such conditions, disconnect the USB cable from the electronics,
wait for all Leds to be turned off, turn on 24vdc power, connect the USB cable
and operate on the electronics. For more details on USB port operations, see
the chapter "Connection through USB port".
Agilent TwisTorr 305-IC User Manual