Warning/Alarm Description Cause Remedy
15 — Hardware mismatch A fitted option is not operational
with the present control board
hardware or software.
Record the value of the following
parameters and contact your
Xylem supplier:
• [15–40] FC Type
• [15–41] Power Section
• [15–42] Voltage
• [15–43] Software Version
• [15–45] Actual Typecode
String
• [15–49] SW ID Control Card
• [15–50] SW ID Power Card
• [15–60] Option Mounted
• [15–61] Option SW Version
16 — Short circuit There is a short circuit in the motor
or motor wiring.
Remove power to the frequency
converter and repair the short
circuit.
17 — Control word timeout There is no communication to the
frequency converter.
The warning will only be active
when [8–04] Control Timeout
Function is NOT set to [0] OFF.
If [8–04] Control Timeout Function
is set to Stop and Trip, a warning
appears and the frequency
converter ramps down until it
stops then displays an alarm.
Check connections on the series
communication cable.
Increase [8–03] Control Timeout
Time
Check operation of the
communication equipment
Verify proper installation based on
EMC requirements.
18 — Start failed The speed has not been able to
exceed [1–77] Compressor Start
Max Speed [RPM] during start
within the allowed time. (set in [1–
79] Compressor Start Max Time to
Trip.
This may be caused by a blocked
motor.
23 — Internal fan fault The fan warning function checks if
the fan is running. The fan
warning can be disabled on [14–
53] Fan Monitor.
Check for proper fan operation.
Cycle power to the frequency
converter and check that the fan
operates briefly at startup.
Check the sensors on the heatsink
and control card.
24 — External fan fault The fan warning function checks if
the fan is running. The fan
warning can be disabled on [14–
53] Fan Monitor.
Check for proper fan operation.
Cycle power to the frequency
converter and check that the fan
operates briefly at startup.
Check the sensors on the heatsink
and control card.
25 — Brake resistor short circuit The brake resistor is monitored
during operation. If a short circuit
occurs, the brake function is
disabled and the warning appears.
The frequency converter is still
operational but without the brake
function.
Remove power to the frequency
converter and replace the brake
resistor (see [2–15] Brake Check).
7 Warnings and alarms
Aquavar
®
Intelligent Pump Controller - 150 HP to 600 HP INSTRUCTION MANUAL 141
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