Warning Messages - Wilo Stratos Notice De Montage Et De Mise En Service

10.3 Warning messages

• The fault (warning only) is displayed.
• The fault signal LED and the FC relay do not respond.
• The pump continues to run. The fault may occur any amount of times.
• The indicated faulty operating state must not occur for a long period of time. The
cause should be eliminated.
EXCEPTION: If the "E04" and "E05" in HV operation warnings apply for longer
than 5 minutes, they are transmitted as fault signals (see Section 10.1).
Code Symbol
No. flashing
E03
E04
E05
E07
*)
E09
E11
E38 Motor
E50
E51
Installation and operating instructions Wilo-Stratos/-D/-Z
Problem
Water temperature
> 110°C
Mains undervoltage
Mains overvoltage
1. Generator
operation
2. Turbine
operation
Turbine operation
Pump idling
Temp. sensor
medium faulty
Bus communication
fault
Invalid
master/slave
combination
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)
The pump is driven
backwards
Air in the pump
Motor faulty
Interface, core
defective, IF
modules not
connected properly,
cable defective
Different pumps
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
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.
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
English
39