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Some faults linked to the circulating pump are signalled by the LED located around the
speed selector (fig. 36 - fig. 37).
Table. 5 - Circulating pump LED indications
Off
Min
.
Circulating pump on STANDBY
1
I
4
II
7
III
Green ON
Circulating pump Working
Green Flashing
Air venting cycle
Green/Red alternating
Circulating pump blocked due to external causes:
- Overvoltage (>270V)
- Insufficient voltage (<160V)
- Motor overload
Red Flashing
Circulating pump blocked due to internal causes:
- Motor blocked
- Damaged electronics
Circulating pump diagnostics (model PARA)
Some faults linked to the circulating pump are signaled by the LED (fig. 37).
LED
Fault
Fault
On with red light
Contact/winding
Under/overvoltage
Flashing with red
Excessive module tem-
light
perature
Short circuit
Turbine operation
Dry running
Flashing with red/
green light
Overload
44
EN
fig. 36
fig. 37
Cause
Cure
Blocked rotor
Activate manual restart or
contact Customer Service
Faulty winding
Supply side voltage too low/
high
Check the mains voltage
and conditions of use.
Inside of module too hot
Request Customer Service
Motor current too high
The hydraulic system of
pumps is fed but the pump
does not have mains voltage
Air in pump
Check the mains voltage,
the water flow/pressure as
The motor turns with difficulty.
well as the environmental
Pump operation not in accord-
conditions
ance with specifications (e.g.
high module temperature).
The speed is lower than in nor-
mal operation.
cod. 3541Q544 - Rev. 02 - 05/2024
ATLAS D ECO SI UNIT
5. TECHNICAL DATA AND CHARACTERISTICS
5.1 Main components, dimensions and connections
95
194
38
74
32
fig. 38- Front view
65
14
210
fig. 39 - Rear view
500
36
246
278
295
Ø120-130
10
8
11
9
50
145
290
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