Wilo Stratos 1.25x3-20 Notice De Montage Et De Mise En Service page 36

English
Code Symbol
No. flashing
E03
E04
E05
E07
E09
E11
E38 Motor
E50
E51
E52
E53
E54
MA
Table 10.2: Warning messages
If the fault cannot be remedied, please contact your local heating specialist
or Wilo customer services.
32
Problem
Water temperature
> 110°C
Mains undervoltage
Mains overvoltage
Generator operation
Turbine operation
Pump idling
Temp. sensor
medium faulty
PLR/LON/CAN
communication fault
non-permissible
combination
Master/slave
communication
error
Nonauthorised CAN
address
Connection I/O -
module
Master/slave not set
Subject to technical alterations!
cause
Heating control
incorrectly set
Mains overloaded
Faulty supply by the
electricity supply
company
Driven by admission
pressure pump
The pump is driven
backwards (pump
perfusion from the
pressure to the
suction side)
Air in the pump
Motor faulty
Interface, core
defective, IF
modules not
connected properly,
cable defective
Different pumps
Stratos IF module
not correctly
positioned, cable
faulty
Same CAN address
assigned twice
Connection I/O -
module interrupted
remedies
Set to lower
temperature
Check electrical
installation
Check electrical
installation
Balance pump capacity
regulation
Check circulation
direction. Fit a check
valve at the pressure
side
Vent pump and unit
Call customer services
The control system is
switched to local mode
control via the
interface after 5
minutes.
After 5 min. the
modules switch to
single-pump mode.
Reinstall modules,
check cable
Carry out addressing
on the module once
again
Check connection
Specify master and
slave
WILO SE 02/2011