Warning Signals - Wilo Stratos Betriebsanleitung

10.3 Warning signals

• The fault (warning only) is indicated.
• The fault signal LED and the SSM relay do not respond.
• The pump continues to run. The fault may occur any number of times.
• The indicated faulty operating status must not occur for a prolonged period.
The cause must be eliminated.
EXCEPTION: If the "E04" and "E05" warnings apply in HV operating mode for
longer than 5 minutes, they are transmitted as fault signals (see Chapter 10.1).
• The transmission of the fault via the serial digital interface depends on the type
of IF Module.
For details, see the documentation (Installation and operating instructions of
the IF Module).
Code Symbol Fault
no. flashing
E03 Water
temperature
>110 °C
E04 Mains
undervoltage
E05 Mains
overvoltage
E07 1.Generator
2.Turbine
*)
E09 Turbine
operation
E11 Pump idling
E38 Motor Fluid
temperature
sensor
defective
Installation and operating instructions Wilo-Stratos/-D/-Z/-ZD
Cause
Heating control set
incorrectly
Mains overloaded
Faulty supply by the elec-
tricity supply company
Driven by the admission
operation pressure pump (the pump
is flowed through from
the suction to the
pressure side)
The pump is driven back-
operation wards (the pump is flowed
through from the pressure
to the suction side)
The pump is driven back-
wards (the pump is flowed
through from the pressure
to the suction side)
Air in the pump
Motor defective
Remedy
Set to lower temperature
Check electrical
installation
Check electrical
installation
Synchronise power control
of pumps
Check flow, install non-
return valves if necessary
Check flow, install non-
return valves if necessary
Vent the pump and unit
Request customer service
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