16
installation and operation manual
COMMON TROUBLES AND
REMEDIES
Trouble
Potential causes
Remedies
Pump is not
switched on at flow
rate of more than 2
l/min
Electrical cable
failure
Microcontroller failure
Check power supply
and wiring system
Contact service
center
Pump is not switched
on, LED flashes
Open circuit in cable
between the device and
the pump
Microcontroller failure
Replace cable
Contact service
center
Pump operates con-
tinuously and does
not switch off when
water consumption
stops
Microcontroller failure
Contact service
center
Pump is switched off Sealed contact failure
Contact service
center
Pump is not
switched on at the
system pressure
drop to Рmin and is
not switched off at
Pmax
Pressure sensor failure
Open circuit in pressure
sensor
No contact in pressure
sensor terminal
Microcontroller failure
Contact service
center
Pimp does not
build up the system
pressure
Improper installation
Pump failure
Check correctness
of pump installation
according to Pump
Installation and
Operation Manual
Contact pump service
center
