GX9 ASD Installation and Operation Manual 227
*POFF *Control Power Under-
Voltage
Under-voltage condition at the 5,
15, or the 24 VDC supply.
• Defective Control Board.
• Excessive load on power supply.
• Low input voltage.
Rtry Retry After a trip has occurred, for a
number of user-set times an
automatic system restart is
attempted for a qualified trip.
•The Retry function is active.
UC Low-Current Operation With the Low-Current Trip
(F610) parameter enabled, the
output current of the ASD is
below the level defined at F611
and remains there for a time
longer than the setting of F612.
• Output current too low.
NOFL Virtual Linear Pump
No Flow
A Low suction/No-flow cut off
condition has been active for a
duration longer than the setting
of F936.
• Pump prime required.
• Feed water loss.
• Output valve is closed.
• System may be set to Trip or Alarm for this
condition at F935.
* Reset ignored if active.
LED
Screen
LCD
Screen
Description
Possible Causes/
Troubleshooting
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