10
6
7
8
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
Circulating pump LED
(first red LED)
Description
Diagnostics
Remedy
R Y
Y
Y
Y
On Off Off Off On
Circulator pump blocked
The circulator pump cannot restart
automatically due to an anomaly
Wait for the circulator to make auto-
matic release attempts or manually
release the motor shaft acting on the
screw in the centre of the head.
If the anomaly persists replace the
circulator.
R Y
Y
Y
Y
On Off Off On Off
Abnormal situation (the circulator
continues operating).
low power supply voltage
Voltage off range
Check power supply
R Y
Y
Y
Y
On Off On Off Off
Electrical fault
(Circulator pump blocked)
The circulator is locked due to power
supply too low or serious malfunction
Check the power supply, if the anomaly
persists replace the circulator
Key:
1 - Function selection button
2 - Green (G) / red (R) LED
3 - 4 yellow LEDs (Y)
Head available to the system.
Key:
Vn = Available head
An = Pump absorbed power
Ci
rcu
la
to
r p
um
p a
bs
or
be
d p
ow
er (
W
)
Ci
rcu
la
to
r p
um
p a
bs
or
be
d p
ow
er (
W
)
Flow rate (l/h)
Flow rate (l/h)
H
ea
d (kP
a)
H
ea
d (kP
a)
V4
V4
V3
V3
V2
V2
A4
A4
A3
A3
A2
A2
Head and output with the by-pass closed
Head and output with the by-pass open
