Wilo Stratos-D Series User Manual

English
88 WILO SE 10/2013
Table 10.1: Fault signals
Code
no.
Symbol
flashing
Fault Cause Remedy
E04 Line
terminal
Mains
undervoltage
Power supply too low on
mains side
Check mains voltage
E05 Line
terminal
Mains
overvoltage
Power supply too high on
mains side
Check mains voltage
E10 Motor Pump
blockage
e.g. due to deposits Unblocking routine starts
automatically.If the block-
age is not removed after a
maximum of 40 seconds,
the pump goes off.
Request customer service
E20 Motor Excess
winding
temperature
Motor overloaded Allow motor to cool down,
check setting
Water temperature too
high
Reduce water temperature
E21 Motor Motor
overload
Deposits in the pump Request customer service
E23 Motor Short circuit/
earth leak-
age
Motor/module defective Request customer service
E25 Motor Faulty
contact
Module not connected
properly
Re-connect module
E30 Module Excess
module
temperature
Limited air supply to
module heat sink
Improve room ventilation,
check operating condi-
tions, request customer
service, if necessary
E31 Module Excess
power sec-
tion temper-
ature
Ambient temperature too
high
Improve room ventilation,
check operating condi-
tions, request customer
service, if necessary
E36 Module Module
defective
Electronic components
defective
Request customer service/
replace module

Wilo Stratos-D Series Specifications

General

Application	Heating
Connection Type	Flange connection
Fluid Temperature Range	-10 °C to +120 °C
EEI	≤ 0.20
Display	LCD
Power Consumption	Varies depending on model
Housing Material	Cast iron
Motor Type	EC motor
Energy Efficiency Class	A