Xylem IM131R01 AQUAVAR AV II - Manual (Page 71)

External Device Error
This indicates that there is an electrical problem with the input line, drive or pump motor.
To determine the exact problem, open the front panel door and read the error message on
the internal display.
Active Fault/Warning and Fault History Mode
When a fault or warning occurs, the Operate mode automatically changes to the Active Fault
mode. The drive stores up to three active faults or warnings and provides a separate display for
each. Diagram 20 provides a sample display for an active fault.
Once the active fault display is shown, you must correct the condition causing the fault and then
reset the drive to return to the Operate mode. However, if all three active fault displays only show
warnings, you may return to the Operate mode by pressing SHIFT + ENTER.
In addition to the active faults, the drive maintains a history of faults. The three most-recent faults
are kept in the fault history log. The log is accessed by pressing SHIFT + ENTER. As shown in
Diagram 20, the display is the same as for active faults, except that an H is shown in the upper left
corner. (See Table 13 for a description of fault codes.)
After viewing the fault history log, return to the Operate mode by pressing PROG twice.
Table 13: AQUAVAR II Electrical Fault Codes
Fault Code Fault Name Possible Cause(s) How to Recover
01 Watch Dog Trip Consult Factory Consult Factory
02 Power Bridge ID • Ribbon cable not correctly • Ensure that the ribbon cable is
seated between the power correctly seated.
and control boards. • Determine the source of the
• Electrical noise. noise and eliminate it.
03 Current Calibr Current sensors have an Consult factory.
offset problem.
70
Repair of Faults and Errors
A1 FAULT #12
GROUND FAULT
Name of fault or warning
Indicates which display is shown
(1 denotes the first, most-recent fault or warning)
H3 FAULT #12
GROUND FAULT
Name of fault or warning
Indicates which display is shown
(3 denotes the oldest fault)
Display for Active Faults and Warnings Display for Fault History
Diagram 20