21
1-27
1-29
1-28
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
1.28 SOLAR CIRCUIT CIRCULATION
PUMP.
The units are supplied with circulating pumps
fitted with speed regulator.
These settings are suitable for most systems.
In fact, the pump is equipped with electronic
control to set advanced functions. For proper op-
eration one must select the most suitable type of
operation for the system and select a speed in the
available range, with a focus on energy savings.
Display of operation status.
During normal
operation the status LED (2) is on green (flashing
(FL) when it is in stand-by), the four yellow LEDs
(3) indicate circulator absorption according to
the following table:
Circulating pump LED
Absorption
G Y
Y
Y
Y
FL Off Off Off Off
C i r c u l a t o r i n
stand-by
G Y
Y
Y
Y
On On Off Off Off
0 ÷ 25 %
G Y
Y
Y
Y
On On On Off Off
25 ÷ 50 %
G Y
Y
Y
Y
On On On On Off
50 ÷ 75 %
G Y
Y
Y
Y
On On On On On
75 ÷ 100 %
Selection of operating mode.
To see the current
operation mode it is sufficient to press button
(1) once.
To change operation mode press the button
for between 2 to 10 seconds until the current
configuration flashing, each time the button is
pressed all possible functions are scrolled cycli-
cally according to the table (Fig. 1-28). After a
few seconds without doing any operation the
circulator memorises the selected mode and goes
back to operation display.
- Constant curve: the circulator works main-
taining system head constant. The circulator
working point will move up or down according
to the system's demand.
- PWM Profile:
do not use this operation mode.
Selection button lock.
The button has a feature
that locks its operation to prevent accidental
modifications, to lock the control panel it is
necessary to press button (1) longer than 10
seconds (during which the current configuration
flashes), the active lock is signalled by all LEDs of
the control panel flashing. To unlock the button
press again longer than 10 seconds.
Real time diagnostics:
in the event of mal-
function the LEDs provide information on the
circulator operation status, see table (Fig. 1-29):
Circulating pump LED
Description
G Y
Y
Y
Y
On On On Off Off
Constant curve
speed 1
G Y
Y
Y
Y
On On On On Off
Constant curve
speed 2
G Y
Y
Y
Y
On On On On On
Constant curve
speed 3
G Y
Y
Y
Y
On On On Off On
Constant curve
speed 4
(de-
fault)
DO NOT USE
Circulating pump LED
Description
R Y
Y
Y
Y
On Off On Off Off
PWM Profile
speed 1
R Y
Y
Y
Y
On Off On On Off
PWM Profile
speed 2
R Y
Y
Y
Y
On Off On On On
PWM Profile
speed 3
R Y
Y
Y
Y
On Off On Off On
PWM Profile
speed 4
Key:
1 - Function selection button
2 - Green (G) / red (R) LED
3 - 4 yellow LEDs (Y)
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
