5. Possible Working Defects
Type of
defect
Possible cause related to unit
Possible cause not related to unit
The pump
does not start
1.
The controller is
damaged
2.
The restart bu
tt
on is
jammed
3.
Enter the parameter
adjustment screen
1.
The voltage is lower than 240V
2.
The pump is no longer working
3.
Electric cabled inverted
(Line/motor)
The pump
does not stop
1.
The controller is
damaged
2.
The check valve is
jammed open
3.
The water contains iron
oxide
Presence of leaks in the pipeline
The pump
works
intermi
tt
ently
1.
The controller is
damaged
2.
The pressure range is
not large enough
Presence of leaks in the pipeline
Status light
fl
ashing
1.
The controller is
damaged
2.
Damaged suc
ti
on pipe
1.
Water shortage
2.
Pump is broken
3.
Leakage of pump inlet
4.
Pump head lower than start
pr0.3 bar (mode 1)
5.
Pump head is lower than stop
pressure (mode 2)
Display – P--
1.
The controller is
damaged
2.
The pressure sensor is
damaged
The actual pressure in the pipe line is more
than 9.9 Bar for longer than 5 seconds
Display – A--
1.
The controller is
damaged
Pump has start pressure and stop pressure
in intervals less than 30 seconds for the last
15 starts
6. Opera
ti
ng Sugges
ti
on
When the device is used in ‘dE1’ mode, the stop pressure must be lower than
the max head of the pump. The stop pressure must be 0.3 -0.5 bar lower than the
maximum head that the pump can generate, i.e if the max head of the pump is
40m, the stop pressure should be set between 3.5 and 3.7 Bar.
