ENGLISH
GB
14
e39-e40
Protection
against
overcurrent
-Check that the circulator turns freely.
-Check that any antifreeze added does
not exceed the maximum percentage
of 30%.
e21-e30
Voltage Error
-Switch off system power.
-Wait for the warning lights on the control
panel to go off, then power the system
again.
-
Check that the mains voltage is correct,
if necessary reset it at the plate values.
e31
Twin
communication
absent
-Check that the twin communication ca-
ble is intact.
-Check that both circulators are pow-
ered.
e42
Dry operation
-Put the system under pressure.
e56
Motor excess
temperature
-Switch off system power.
-Wait for the motor to cool down
-Power the system again
e57 ; e58
f < 100 Hz
f > 5 kHz
Check that the PWM external signal is
operating and connected as specified.
Energy Efficiency Index - EEI
The benchmark for the most efficient circulators is EEI ≤ 0,20.