Xylem Motor pump control unit GEN Series - Manual (Page 47)

47
Control unit failure
Incorrect programming of control unit, starting contact
reversed
Motor pump does not start in
either Automatic or Manual
mode
Battery discharged or with reduced capacity, power the
panel and charge the batteries. Disconnect the power
supply, read the voltage value and compare it one hour
later. The voltage should remain above 12V.
Motor pump does not start in
either Automatic or Manual
mode
Check the battery voltage during the start-up stage. Check
the battery charge.
It does not start in automatic
mode from the level switch
control
Check the level switch connection and remove any jumper.
It does not start in automatic
mode from the pressure switch
control
Check the pressure switch status, connection and contacts.
The start command is generated when the contact
between the terminals is open.
The motor pump does not start
from any of the controls or it
starts only from one of the two
batteries.
If the batteries are efficient and no attempt is made to
start, check the starting relays.
The motor pump does not stop
when the STOP button is pressed
KA1 relay faulty
Failure of the electric stop device located on the engine
Control unit failure
The engine pick-up is disconnected or damaged
When the engine is running, the
starting motor remains on
Control unit failure
The engine pick-up is disconnected or damaged
The control unit revolution counter is not properly
calibrated
The motor pump does not stop
from the key-operated control
The KA1 relay for electric stop device control is faulty:
request spare part
Electric stop device faulty : request spare part
If an emergency start was made, the motor pump must be
stopped by operating the stop lever, otherwise check the
operation of the electric stop device.
The control unit display shows
AUTO operation even when the
position of the selector switch is
changed
Control unit failure
Selector switch contact connections loose or disconnected:
check the connections (refer to enclosed wiring diagram)
The control unit display does not
show the engine revolutions
Control unit failure
The engine pick-up is disconnected or damaged
The heater does not work Check the electrical connection
Check the QU2 fuse in the control panel
7. DISPOSAL
The control unit and panel contain electrical components; observe the regulations locally in
force regarding sorted waste disposal.