Alarm; Alarm Status - Grundfos CONTROL MPC Installation And Operating Instructions Manual

11.6 Alarm (3)

The Alarm menu gives an overview of alarms and warnings.
In this menu, it is possible to reset alarms and to see the alarm
log.

11.6.1 Alarm status (3)

Fig. 28 Alarm status
Description
A fault in the system or one of the components monitored can
cause an alarm or a warning
the alarm/warning signal relay and the red indicator light on the
CU 351, an alarm can also cause a change of operating mode,
for instance from Normal to Stop. A warning only causes a fault
indication.
The table shows the possible causes of fault together with an
alarm code number, and whether they result in an alarm or a
warning. It also shows to what operating mode the system
changes in case of alarm, and whether restart of the system and
reset of the alarm is manual or automatic.
The table also shows that the reaction to some of the fault causes
mentioned can be set in the Settings menu. See sections
11.7.24 Soft pressure build-up (4.3.3) and 11.7.41 Monitoring
functions (4.4) to 11.7.51 Pressure relief (4.4.8).
. Besides the fault signal via
Fault
Water shortage
Water shortage
Pressure high
Pressure low
Pressure relief
Alarm, all pumps
External fault
Dissimilar sensor
signals
Fault, primary sensor
Fault, sensor
Communication fault
Phase failure
Undervoltage, pump
Overvoltage, pump
Overload, pump
Motor temperature too
high
Other fault, pump
Internal fault, CU 351
Internal fault, IO 351
VFD not ready
Fault, Ethernet
Limit 1 exceeded
Limit 2 exceeded
Pressure build-up fault
Pumps outside duty
range
Pilot pump fault
Man/auto X 206
Stop Man/auto X 214
Stop Man/auto X 210
Man/auto
X 211
Stop Man/auto
Auto X 219
Stop Auto 203
Man/auto
X 3
Stop Man/auto
Auto 204
Stop Auto 89
Auto 88
Auto 10
Auto 2
7, 40,
Auto
42, 73
Auto 32
48, 50,
Auto
51, 54
64, 65,
Auto
67, 70
Auto 76, 83
83,
Auto
157
72, 83,
Stop Auto
157
Auto 213
231,
Auto
232
Man/auto X 190
Man/auto X 191
Man/auto X 215
Man/auto X 208
Auto 216
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