EPS 1001905, Operation And Maintenance Manual, Page: 20 / 28

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Troubleshooting
Problems Signals Possible causes Solutions
PRESFLO®(Multi)
will not turn on
POWER ON
PUMP ON
No power Check the electrical connections
The pump will
not start when a
tap is turned on
POWER ON
PUMP ON
PRESFLO® model with an inad-
equate start-up pressure (Pm)
for the chosen application
Relocate PRESFLO® to another
position
Install a model with a higher start-up
pressure (Pm)
POWER ON
PUMP ON
Faulty electrical connections
or pump out of service
Check the electrical connections and
that the pump is working
POWER ON
PUMP ON
PRESFLO® “STAND-BY”” Reset PRESFLO® (See Operation,
point 3).
POWER ON
PUMP ON
PRESFLO® in temporary shut
down due to “DRY RUNNING”
due to lack of water
Wait for the automatic restart or
press START to restart manually (See
Operation, point 4a)
Maximum pump pressure is
insuffi cient
Replace the pump with one with
more suitable characteristics
Install a model with a lower start-up
pressure (Pm)
POWER ON
PUMP ON
PRESFLO® in temporary shut
down due to “FREQUENT
START-UP”
Wait for the automatic restart or press
START to restart manually (See Oper-
ation, point 4b). Remove any cause
of leakage from system or install an
expansion tank
POWER ON
PUMP ON
PRESFLO® stops due to “OVER-
CURRENT”
Check if the setting of the maximum
current (Imax) is congruent with the
data of the pumps’ ratingplate. If after
manually restarting the pump after
correctly setting PRESFLO®, it again
signals an anomaly, check that the
motor has no mechanical or electrical
problems.
The pump
delivers no or
low pressure
POWER ON
PUMP ON
Filters or pipes may be partly
blocked
Check the water pipes
PRESFLO®’s valve will not open
completely
Check that the valve is not blocked
by any foreign objects and clean if
necessary
The pumps
stops and starts
repeatedly
POWER ON
PUMP ON
POWER ON
PUMP ON
Leaks within the system (less
than the shut-off fl ow rate Qa)
Check the hydraulic connections and
repair any leaks. If a leak cannot be
repaired, install an expansion tank
The pump will
not stop
POWER ON
PUMP ON
The fl ow rate is higher than
the shut-off fl ow rate (Qa)
Make sure that all taps are turned off
and that there are no leaks within
the system
PRESFLO®’s check valve will
not close or is damaged
Check that the valve is not blocked
by any foreign objects and clean if
necessary
On Flashing Off
Presfl o Multi Presfl o Vario