Wilo Stratos-D, Installation And Operating Instructions Manual

Page: 34 / 98

English
34 Subject to technical alterations! WILO AG 05/2007
Table I
10.3 Error messages: Error LED “permanent light“
Problem cause remedies
Pump does not run
with switched on
power Electric fuse faulty, Check fuse
Pump has no power Rectify interruption to power
Noisy pump operation Cavitation due to insufficient
admission pressure Increase system admission
pressure within permissible
range
Code
No. Symbol
flashing Problem cause remedies
E04 Supply
terminal Mains undervoltage Mains overloaded Check electrical
installation
E05 Supply
terminal Mains overvoltage Check electrical
installation
E10 Motor Pump blocked e.g. sedimentation De-blocking routine
starts automatically.
Should this not remove
the blockage, the
pump switches off
after 10 sec.
Call customer services
E20 Motor winding overheated Motor overloaded Let motor cool down,
check the settings
Ambient
temperature to high Reduce water
temperature
E21 Motor Motor overload Sediment in the
pump Call customer services
E23 Motor Short circuit/contact
fault Motor defect Call customer services
E25 Motor Contact error Module not correctly
installed Reinstall module
E30 Module Excess temperature
module Air intake to module
heat sink is blocked Free air intake
E31 Module Excess temperature
power component Ambient
temperature to high Improve ventilation in
room
E36 Module Module faulty Electronic
components faulty Call customer service /
swap module