GB
ENGLISH
Critical
overhea-
ting of
e32-e35
electronic
parts
Sensor
e43-e45;
signal
e54
absent
Protection
e39-e40
against
overcurrent
Voltage
e21-e30
Error
Twin com-
munication
e31
absent
Dry opera-
e42
tion
Motor
e56
excess tem-
perature
f < 100 Hz ;
e57 ; e58
f > 5 kHz
36
- Switch off system power.
- Wait for the warning lights on the control panel
to go off.
- Check that the system ventilation ducts are
not blocked and that the environment tempe-
rature of the premises is correct.
- Check sensor connection.
- If the sensor is faulty, replace it.
- 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 ne-
cessary reset it at the plate values.
- Check that the twin communication cable is
intact.
- Check that both circulators are powered.
- 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