Wilo Stratos Notice De Montage Et De Mise En Service page 35

10.4 Warning messages: Error LED "off"
Code Symbol
No. flashing
E03
E04
E05
E07
E09
E11
E38 Motor
E51
E52
MA
If the fault cannot be remedied, please contact your local heating specialist
or Wilo customer services.
Installation and operating instructions Wilo-Stratos
Problem
Water temperature
> 110°C
Mains undervoltage
Mains overvoltage
Generator operation
Generator operation
Pump idling
Temp. sensor
medium faulty
non-permissible
combination
Master/slave
communication
error
Pump switches from
standard mode to
fixed characteristic
(depending on
chosen set value,
see fig. 9)
Master/slave not set
cause
Heating control
incorrectly set
Mains overloaded
Driven by admission
pressure pump
Driven by
reverse
flow through "off"
pump
Air in the pump
Motor faulty
(automatic night
setback)
Different pumps
Stratos IF module
not correctly
positioned, cable
faulty
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
After 5 min. the
modules switch to
single-pump mode.
Reinstall modules,
check cable
Specify master and
slave
English
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