8
9
STARTING
When the unit is connected to the electrical supply, the green led “Power On”
lights up and the yellow led “On” (Pump in operation) indicates that the pump has
been started.
The pump continues to operate for 8-10 seconds enabling the pipes in the
system to fill and reach the required pressure.
FUNCTIONING
The starting operation is now achieved and the unit is programmed to perform
all the pump control operations automatically.
MP PLUS Automatic restart and anti-jamming function
In case of stopping due to a water shortage, the device will automatically make
10 double attempts to rearm over the 24 hours following the failure, each lasting
approximately 5 seconds to allow the pump and the system to reload if possible.
In the event of water shortage, after the last failed rearming attempt the device
will stop to automatically rearm and will sit in stand-by and signal failure.
After 24 hours it will make a single rearming attempt of 5 seconds, and if in this
case it finds water it will reset and repressurise the system but if it will not find
water it will return in failure and will try to rearm again after 24 hours.
This process can always be bypassed by manual reset. The anti-jamming
function, is always active even in case of failure due to water shortage.
TROUBLESHOOTING GUIDE
PROBLEM
POSSIBLE CAUSE
SOLUTION
The pump does
not start
System is already under pressure
• Closed Tap
• The column of water
over the device is higher
than the restart pressure
of the device.
Faulty pump capacitor
Check pump capacitor.
Pump is jammed
Remove the object
mechanically
jamming the pump.
Front pannel led lights are off
• Check power supply.
• Check wiring.
• Electronic card may be
broken.
The pump does
not stop
Device installed in horizontal
position
Install the device in vertical
position.
Presence of flow
Check if any tap is open
and in that case close it.
Tap closed and presence of a big
expansion tank
In this case, the pump will
stop the pump in a longer
time; that depends on the
pressure tank size and its
pressure.
System leaks higher than the
minimum flow
Check if there are leaks in
the system.
Flow valve blocked in the upper
position
Check the presence of
foreign bodies in the
device.
Intermittent
pump working
Presence of system leaks lower
than the minimum flow of 1 L/min
Check if there are leaks in
the system.
Pressure generated from the
pump is too low
• The pump is not
compatible with the
restart pressure of the
device.
• The pump is old and
has lost efficiency
compared to the pumps
specifications.
Pump is discharged
• Check the correct
priming of the pump.
• Presence of air in the
system.
