Wilo
Variable differential
pressure - Δp-v
Constant differential
pressure - Δp-c
Constant speed
PUMP CURVE
I, II, III
CONTROL MODE
NORMAL
OPERATION
FAULT
NORMAL
OPERATION
FAULT
CONTROL MODE
Variable differential
pressure - Δp-v
Constant differential
pressure - Δp-c
Constant speed
PUMP CURVE
I, II, III
Wilo Display
LED display
Hold
Hold
Status
Locked
8 sec
Unlocked
Factory
setting
Venting
1 sec
1 sec
10 min
Manual
restart
Factory
setting
30sec
Hold
8 sec
Hold
3 sec
Hold
6 sec
Hold
+
1
.
4.
3.
2.
LED
Indicator
Meaning
Diagnostic
Cause
Remedy
lights green Pump in
operation
Pump runs
according its
setting
Normal operation
blinks red/
green
Pump in
function but
stopped
Pump restarts
by itself after
the fault is
disappeared
1.
Undervoltage U<160 V
or Overvoltage U>253 V
2.
Modul overheating:
temperatur inside motor
too high
1.
Check voltage supply
195 V < U < 253 V
2.
Check water and
ambient temperature
blinks red
Pump out of
function
Pump stopped
(blocked)
Pump does not restart by
itself due to a permanent
failure
Change pump
blinks
orange
Pump out of
function
Pump stopped
Pump is not starting
Change pump
LED off
No power
supply
No voltage on
electronics
1.
Pump is not connected
to power supply
2.
LED is damaged
3.
Electronics are damaged
1.
Check cable connection
2.
Check if pump is running
3.
Change pump
http://www.esbe.eu/global/en/
products/circulation units
WILO - Faults, Causes and
Remedies
LED display
click
Control mode
Pump curve
RecomendedAlt.
1
Constant speed
II
Constant speed
I
Variable differential
III
Variable differential
II
I
III
6
II
I
III
2
3
4
5
7
8
9
Click
Click
Recommended Alternative
LED display
Control mode
Pump curve
Constant speed
Constant speed
Variable differential
pressure Δp-v
Variable differential
pressure Δp-v
Variable differential
pressure Δp-v
Constant differential
pressure Δp-v
Constant differential
pressure Δp-v
Constant differential
pressure Δp-v
Constant speed
Settings navigations
Pump Settings
6
Application
information
Expose application info using leaflet
7