Faults, Causes, And Remedies - Lowara ecocirc XL Montage-, Betriebs- Und Wartungshandbuch

en - Original instructions
Error Cause
code
E01 Internal communication
lost
E02 High motor current
E03 DC Bus overvoltage
E04 Motor stall
E05 Data memory corrupt-
ed
E06 Voltage supply out of
operating range
E07 Motor thermal protec-
tion trip
E08 Inverter thermal protec-
tion trip
E09 Hardware error
E10 Dry run
8.3 Alarm codes
Alarm Cause
code
A01 Fluid sensor anom-
aly
28
Switch off the pump for 5 minutes and then power on. If the problem persists, contact service.
28
Solution
Restart the
28
pump
Restart the
28
pump
Other sources
force too high
flow through the
pump. Check
the system set-
up, correct posi-
tion of non re-
turn valves and
its integrity.
Restart the
28
pump
Restart the
28
pump
Check the elec-
trical system
voltage and
connection.
Check the pres-
ence of impuri-
ties around im-
peller and rotor
that cause over-
load on the mo-
tor. Check in-
stallation condi-
tions and tem-
perature of the
water and air.
Wait until the
motor is cooled.
If the error per-
sist try to restart
28
the pump .
Check installa-
tion conditions
and air temper-
ature.
Restart the
28
pump .
Check presence
of system leak-
age or fill the
system.
Solution
Switch off the pump
for 5 minutes and
then power on. If
the problem per-
sists, contact serv-
ice
Alarm Cause
code
A02 High temperature of
the fluid
A05 Data memory cor-
rupted
A06 External tempera-
ture probe anomaly
A07 External pressure
sensor anomaly
A08 Cooling fan failure
(Only on ecocirc
XL /ecocirc XLplus
80-120F, 100-120F,
D 80-120F models)
A12 Twin pump commu-
nication lost
A20 Internal alarm

8.4 Faults, causes, and remedies

The pump does not start
Cause
No power.
Triggered ground-fault
protection device or cir-
cuit breaker.
Bridged or wrong start
signal on the start/stop
contacts.
Solution
Check the correct
status of the sys-
tem
Switch off the pump
for 5 minutes and
then power on. If
the problem per-
sists, contact serv-
ice
Check the probe
and the connection
to the pump
Check the sensor
and the connection
to the pump
Check for the pres-
ence of external
bodies which could
lock the fan rota-
tion. Switch off the
pump for 5 minutes
and then power on.
If the problem per-
sists, contact serv-
ice.
If both pumps show
the A12 alarm,
check the connec-
tion between the
pumps. If one of the
pump is switched
off or shows anoth-
er error code,
check the section
8.1 and 8.2 to find
the problem
Switch off the pump
for 5 minutes and
then power on. If
the problem per-
sists, contact serv-
ice
Remedy
Check the power supply
and ensure connection to
the main is intact.
Reset and replace blown
fuses.
Unbridge and correct the
signal.