Installation and operating manual
65
010-532_05
EN
Level fault
- Incorrect assignment or cabling of the probes (float switch,
pressure switch, level probe or airtightness of the pressure
system)
- Incorrect probe configuration (e. g. level sensor configured
but pressure switch connected)
Functional check, troubleshooting
Phase outage
Phase L2 or L3 no longer present
Check power supply cable and fuses.
Rotary field fault
Wrong rotary field for mains connection
Swap 2 phases of power cable.
Motor protect 1 and/
or 2
- Motor protection switch has triggered - Motor protection
switch set incorrectly.
- Pumping current too high due to faulty or blocked pump.
- Increased current due to phase failure
- Set current value according to pump.
- Remove blockage.
- Replace pump if faulty - Check power supply for phase failure.
Pressure loss
Hose on the screw fitting to the immersion pipe (or
submersible pressure switch) or control unit leaking.
Check airtightness of the pressure sensor system.
Relay switching
cycles
Maximum operating cycles exceeded
Can be acknowledged. Inform Customer Services. Fault
appears after a further 1000 operating cycles.
Max. run time
1 and/or 2
Pump runs for too long per pump procedure
Check station arrangement and inform Customer
Service, if necessary
Max. run occur
1 and/or 2
Pump runs too frequently in a short period of
time
Check station arrangement and inform Customer
Service, if necessary
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