The push-button has the following function:
ū not pressed: automatic mode;
ū pressed: test run = The pump runs as long as the button is pressed. If the water
level has not yet reached the switch-off point after the button is released, the pump
continues to run until the switch-off point is reached.
In case of malfunction, check if:
ū the power supply is correct,
ū the connected devices are operating properly,
ū the liquid has sufficient conductivity.
For further informations, see 7. Malfunctions, causes and troubleshooting.
6. MAINTENANCE
DANGER
Risk of death from electric shock!
Disconnect electrical power before working on the unit!
Clean the electrode tips regularly to avoid deposits that could lead to malfunctions.
7. MALFUNCTIONS, CAUSES AND TROUBLESHOOTING
Fault
The pump doesn't turn on.
Pump does not switch off.
Faulty switching logic.
Cause
Voltage too low, lack of voltage.
Wrong power connection.
Electric cable defective.
Motor protection system switched
off because of overheating, bloc-
king, voltage error.
Fuse blown in the connector
switching device.
Control error/electronics fault.
Dirty electrodes.
Pump defective.
Push-button pressed continuously.
Control error.
Deactivation electrode is too long.
Change cable on terminal 1.
17
Elimination
Check main supply.
Correction.
Replacement/Customer
service department.
Check/Customer service
department.
Replace the fuse (fuse 8 A).
Check, inform customer
service department.
Clean the electrodes.
Replacement/Customer
service department.
Do nit press the push-
button.
Contact the customer
service department.
Shorten the deactivation
electrode (Observe the mini-
mum possible deactivation
point of the pump).
Change cable from terminal
1 to terminal 3 (or inversely).
EN