8 Trouble-shooting
WARNING
Improper work to remedy faults
Risk of injury!
▷
For any work to remedy faults observe the relevant information in this manual
or in the relevant accessory manufacturer's product literature.
If problems occur that are not described in the following table, consultation with the
KSB customer service is required.
Pump not running — no LED display
Pump starts up but stops again immediately
Pump not running — LED display flashes 1x - pauses - flashes 1x
Pump not running — LED display flashes 2x - pauses - flashes 2x
Pump not running — LED display flashes 3x - pauses - flashes 3x
Pump running irregularly — LED display flashes 4x - pauses - flashes 4x
Pump not running — LED display flashes 5x - pauses - flashes 5x
Pump not running — LED display flashes 6x - pauses - flashes 6x
Table 11: Trouble-shooting
A B C D E F G H Possible cause
Remedy
2)
✘
-
-
-
-
-
-
- Master switch OFF, defective fuse, earth
conductor not or incorrectly connected
Check master switch and fuse. Check the
pump connection.
-
✘
-
-
-
-
-
- Remote start/stop contact has been
removed
Fit connecting bridge for start/stop
function.
-
-
✘
-
-
-
-
- Temperature of electronics increased for a
short time
Verify that the water and ambient
temperature are within the indicated
temperature ranges.
-
-
-
✘
-
-
-
- Temperature of the motor increased for a
short time
Verify that the water and ambient
temperature are within the indicated
temperature ranges.
-
-
-
-
✘
-
-
- Pump overloaded for a short time
Check whether the impeller is polluted.
-
-
-
-
-
✘
-
- Pump overloaded
Check whether the impeller is polluted.
-
-
-
-
-
-
✘
- Internal control error
Contact KSB Service.
-
-
-
-
-
-
-
✘
Overvoltage of supply network (exceeding
the tolerance)
Check that the pump is connected properly
and verify the operating voltage against
the data on the name plate.
A
B
C
D
E
F
G
H
2)
Pump pressure must be released before attempting to remedy faults on parts which are subjected to pressure.
8 Trouble-shooting
32 of 36
Rio-Eco N / Rio-Eco Z N / Rio-Eco Therm N
