A B C D E F G H I
J
K L M Possible cause
Remedy
The pump pressure must be
released before attempting to
remedy faults on pressure-retaining
parts. Disconnect the pump from
the power supply!
X
X
X Incorrect pre-charge pressure of
accumulator.
Set correct pre-charge pressure;
replace membrane.
X
X X
X X
Inlet-side pressure switch defective
or set incorrectly.
Check/correct the value set at the
pressure switch.
X
X X X Defective time-lag relay or time set
incorrectly.
Check time-lag relay/correct
minimum operating time.
X
System leaking.
Restore system integrity.
X
X X
X X
Discharge-side pressure switch
defective or set incorrectly.
Check/correct the value set at the
pressure switch.
X
X
Temporary voltage fluctuations.
Press reset/fault acknowledgement
key.
X
X X
X Defective check valve in the
pressure booster system.
Check; fit new valve, if required.
X X X
X
X
Pump running in the wrong
direction of rotation.
Interchange two phases of the
power cable.
X
X
X X
Inlet pressure lower than stated in
the purchase order.
Connect inlet tank, contact KSB.
X
X
X X
Water consumption higher than
stated in the purchase order.
Contact KSB.
10.2
PumpDrive
NOTE
Before performing any work on the pump's internal parts during the warranty period
please always consult the manufacturer. Our after-sales service will be at your disposal.
Non-compliance will lead to forfeiture of any and all rights to claims for damages.
Repeated failure of mains fuse.
Motor does not start.
Motor running unevenly.
Max. speed not reached.
Drive running at minimum speed only.
Drive running at maximum speed only.
No 24 V supply.
Fault message/protective tripping.
Table 30: Trouble-shooting
A B C D E F G H Possible cause
Remedy
The pump pressure must be released before
attempting to remedy faults on pressure-
retaining parts. Disconnect the pump from
the power supply!
X
X
No voltage.
Check the mains voltage; check the mains
fuses.
X
No enable.
Insert jumper/enable via field bus.
X X
Mains cables connected incorrectly/Fault in
power cable.
Check the wiring.
X
Mains fuse rating too small for PumpDrive
input current.
Observe the instructions given in section 10.
X X
No setpoint signal (internal/external).
Check the setpoint signal (internal/external).
A
B
C
D
E
F
G
H
10 Trouble-shooting
Hya®-Solo DV
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