Xylem TEKNOSPEED User Manual
Page 29
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8.2 Troubleshooting Guide
PROBLEM
PROBABLE CAUSE
POSSIBLE REMEDY
The electric pump does not start
No power supply
Restore the power supply
Main switch on
Green light off
Triggering of magneto-thermal
Reset the switch
switch
The electric pump does not start or
it stops if it is already running
*** = 2 flashes
The main switch is on
Motor overload
Check the working conditions
Green light on
of the electric pump
Red light on (*** flashes)
Damaged motor stator
Check the motor
*** = 3 flashes
Converter overtemperature
Check to see if anything is
preventing the proper cooling
of the converter
*** = 4 flashes
Motor overtemperature (if the
Check the working conditions
terminal board is equipped with
of the electric pump
the PTC protection)
*** = 5 flashes
Triggering of dry running
Check the water level
Check the external device and
the related connection cables
*** = 6 flashes
Problems with the pressure
Check the transmitter and
transmitter
the related connection cable
*** = 7 flashes
The supply voltage is too low
Users closed
Water leaks through the non-return
Check the system in order to
Electric pump running with
valve or in the system
locate the leaks.Repair or replace
speed increasing and
any faulty components.
decreasing cyclically
Undersized surge tank
Check the working conditions
Green light on
of the electric pump
Yellow light on
Ruptured surge tank diaphragm
Replace the diaphragm
Red light off
Setting of work point not suitable
Modify the system settings
for the system (the value is higher
than the pressure that the pump
is able to deliver)
Users open
Setting of work point not suitable
Modify the system settings
The electric pump does not start
for the system (the value is equal
Green light on
to zero)
Yellow light off
Red light off
The electric pump is running.
Setting of work point not suitable
Modify the system settings
There are vibrations in the pump
for the system (the value is lower
or near the pump
than the minimum pressure
that the pump can deliver)
Frequent starts and stops
There may be problems with the
Check the float switch and the
float switch in the suction tank
tank
The electric pump is running
There may be problems with the
Check the hydraulic connection
always at maximum speed
pressure transmitter
between the transmitter and the
system