27
Riotec / Riotec Z
Code
Fault/error
Error-
Manual
Switch off
Cause
Solutions
No.
LED *)
Reset
at x
errors/
24 hrs
E52
Communication error
O
W**
IF-modules not plugged in
After 5 minutes the modules
master/slave
properly, cable defect
switch over to single pump mode.
Creel modules again,
Check cable
MA
Master/slave not set
O
W
Set master and slave
Pump makes noises
O
Cavitation as a result of insufficient
Increase system-admission
admission pressure
pressure (remaining within the
permissible range)
Check pump lift settings, reduce
pump lift if necessary
*)
P
→
P
ermanent light,
O
→
LED is
o
ff
**)
Pump moves from regulator mode to fixed characteristic (depends on the fixed set value, see Fig. 8).
W
→
only a
W
arning – not error removal (can appear an infinite number of times)
In the event of high temperatures and high
system pressure, the pumps should be
allowed to cool down.
Danger of liquid boiling over!
If the fault cannot be remedied, please contact
your local plumbing and heating specialist or KSB
customer services.
Subject to technical alterations!
