Wilo Stratos Betriebsanleitung Seite 96

English
Code Symbol
no. flashing
E50
E51
E52
E53
E54
MA
*) Only for pumps with P1 800W
Table 10.2: Warning signals
If the operating fault cannot be remedied, please consult skilled craft firms
or the nearest Wilo customer service point or representative.
90
Fault Cause
Bus commu- Interface, core defective,
nication IF Modules not connected
fault properly, cable defective
Invalid Different pumps
master/slave
combination
Master/slave IF Modules not correctly
communica- plugged in, cable defec-
tion error tive
Invalid bus Same bus address
address assigned twice
I/O module I/O module connection
connection interrupted
Master/slave
not set
Remedy
The control system is
switched to local control
mode via the interface
after 5 minutes
Single pumps:Use the
same pump types.
Double pump: Request
customer service or read
the pump type at MA and
SL using an IR device. If the
module types deviate,
request the corresponding
replacement module
The modules switch over
to single pump operation
after 5 s. Plug modules
back in, check cables
Carry out addressing on
the module once again
Check connection
Define the master and
slave
WILO SE 12/2012