Kessel Aqualift F Guide D'installation Et De Maintenance page 68

8. Malfunctions and troubleshooting
= lit = off l == flashing slowly
Malfunction messages / remedial measures (from model year 01/10)
Battery fault
Power failure (battery operation)
Motor fault
Duo Pump 1
Duo Pump 2
Running time limit fault/ running frequency limit fault
Duo Pump 1
Duo Pump 2
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❍ = flashing quickly
- Acknowledge alarm and alarm key
- Check if batteries are connected
- Replace discharged batteries
- After acknowledging the signal tone, press the alarm key again
--> Switch unit continues to work without batteries
--> No protection function during power failure
- Check whether power has failed in the whole room / building
- Check fuses / check fault-current circuit breaker
- Check mains cable for fault
- Check microfuse in the switch unit
(only use fuses with the same nominal capacity and triggering characteristics).
Cause: TF1, TF2, MSS
Remedy: --> Check motor protection switch 1/2
--> Lower winding temperature switch has triggered
--> Automatic reset when motor has cooled must be acknowledged
using the alarm key.
--> In the case of lifting stations jumper TF2 faulty/not installed
Replace/install jumper
- Running frequency limit fault: one pump starts up more often than 20 times in 3 minutes
--> Check air hose between submersible pipe/plunger and switch unit
for water inclusions
--> Check submersible pipe/plunger for blockage
--> Check supply pipe, check pumping capacity
--> Check backwater flap
- Running time limit fault: Pump has been running for longer than 240 minutes at a time
--> Check air hose between submersible pipe/plunger and switch unit for water inclusions
--> Check submersible pipe/plunger for blockage
--> Check supply pipe, check pumping capacity
--> Check backwater flap
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