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