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TABLE I
(See Section 8 - Failures, causes and remedies).
First, allow the pump to cool if the temperature of the water
conveyed and the pressure in the system are high.
RISK OF BURNS
CODE
FAULT
No.
The pump does not operate
when the power supply input is
connected up.
E02
Water temperature < 20°C.
E03
Water temperature > 110°C.
Undervoltage on power system.
E04
Overvoltage on power system.
E05
E10
Pump blocked.
E11
Pump operates in no-load mode.
E20
Overheating of winding.
E21
Motor overloaded.
E23
Short circuit / contact with. earth.
Faulty contact.
E25
Break in winding.
Break on temp. probe.
E26
Faulty rotation speed sensor.
E27
E30
Overheating of module
E31
Overheating of power element
E36
Faulty module
Faulty liquid temperature sensor
E38
Unauthorized combination
E51
Master/slave communication
E52
problem
MA
Master/slave not adjusted
Pump is noisy
*
: A --> illuminated in continuous mode, E --> LED extinguished
**
: The pump switches from standard mode to the fixed characteristic curve (according to the adjusted set-point value).
W
: --> Simple warning without shutdown. (The fault may reoccur at any frequency).
First of all, allow the pump to cool if the temperature of the liquid conveyed and the pressure in the system are high.
RISK OF BURNS.
Fault
Manual
Shutdown for
LED*
reset
x errors/24 h
E
W
W
E
W
E
W
A
< 5 min.: W
•
> 5 min.: x = 6
A
< 5 min.: W
•
> 5 min.: x =
•
A
x = 1
E
W
•
A
x = 6
•
A
x = 6
•
A
x = 6
•
A
x = 6
•
A
x = 6
•
A
x = 6
E
W
•
A
x = 6
•
A
x = 6
A
x = 1
E
W
E
W
E
W **
E
W
E
CAUSES
Faulty fuses:
No voltage on pump:
Heat regulator is incorrectly adjusted:
Heat regulator is incorrectly adjusted:
Power system overloaded:
For example, clogging:
Air present in pump:
Motor overloaded:
Water temperature too high:
Deposit in pump:
Failure of motor:
Module incorrectly fitted:
Failure of motor:
Failure of motor:
Pump turns in standby conditions (fixed
characteristic curve) according to the
adjusted set-point value. When the com-
mand signal returns, the pump switches to
standard mode after 5 minutes:
Reduced air supply to module cooler:
Ambient temperature too high:
Faulty electronic components for pumps
with P1 ≥ 500 W
Faulty module (reduction function)
Faulty motor for pumps with P1 ≤ 500 W:
Different pumps:
IF modules incorrectly fitted or faulty
cable:
Cavitation due to insufficient pressure:
15
SOLUTIONS
Check the fuses.
Rectify the break in supply:
Set to a lower temperature.
Set to a higher temperature.
Check the electric installation.
The unblocking procedure is engaged
automatically.
If the blockage is not cleared after 10
seconds, the pump is switched off.
Call customer support.
Bleed the installation.
Allow the motor to cool. Adjust.
Decrease the water temperature.
Call customer support.
Call customer support.
Reinstall the module.
Call customer support.
Call customer support.
Call customer support.
Restore the air supply.
Improve ventilation in the premises.
Call customer support / replace the
module.
Call customer support.
After 5 minutes, the modules switch to
single pump mode. Reconnect the
modules. Check the cable.
Determine master and slave.
Increase the system inlet pressure within
the authorized limits. Check the adjust-
ment of the discharge head and, where
applicable, define a lower head.
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