10. Alarms
When an alarm occurs, the device starts emitting an acoustic signal (if available) and an intermittent warning ap-
pears on the STATUS screen indicating the corresponding alarm. By pressing the STOP key (only and exclusively
in correspondence with the STATUS screen) it is possible to attempt to reset the machine. If the cause of the alarm
has not been resolved, the device displays the alarm again and emits an acoustic signal.
WARNING
Immediate remedies must be implemented in case of alarms to safeguard the integrity of the device
itself and of the system in which it is installed.
Alarm Description Possible solutions
AL. AMP. MAX The current absorbed by
the motor exceeds the
value set in the parame-
ter Amp. max.
• Verify that the value set for the parameter Amp. max exceeds by 10% the rated
current of the motor according to the data on the plate.
WARNING
Check with the motor manufacturer the tolerability to withstand a
current greater than its rated current.
• Check that all the motor phases are correctly connected and that the connection is
suitably configured in Star or Delta.
• Check that the pump is turning in the correct direction.
• Make sure the motor is not running on two phases.
• Make sure that the motor is free to rotate and check for any mechanical issues.
PHASE FAILURE Null current in the COM-
MON phase of the sin-
gle-phase motor or on
the T1 phase of the
three-phase motor.
• Check that the load is correctly connected.
• Check the load and the connection.
WATER MISSING The warning DRY RUN
PF appeared 5 consec-
utive times following
the automatic reset at-
tempts.
WARNING
When the warning DRY RUN PF appears, the device will automat-
ically restart the load after a time equal to the value set in the
parameter Restarts delay multiplied by the number of attempts
made. At the end of the fifth attempt, the device will definitively stop
the load producing the alarm WATER MISSING. The alarm must be
reset manually.
KEYBOARD FAULT One of the keys of
the keyboard was held
down for more than 30
seconds.
Check that the keys are mechanically free.
MAX RESTARTS The maximum number
of motor restarts per
hour has been excee-
ded.
Check the possible causes (pressure switch, floater, pre-charge pressure of the auto-
clave, etc ..)
11. Warnings
Warning Description Possible solutions
DIGITAL INPUT1 Digital input 1 has been
activated.
• Check the configuration and connections to digital input 1.
DIGITAL INPUT2 Digital input 2 has been
activated.
• Check the configuration and connections to digital input 2.
DRY RUN PF The power factor (Dry
run PF cosphi) of the
motor read by the de-
vice is permanently be-
low the value set in the
parameter.
• Check that the pump is properly primed.
• Check that the pump is turning in the correct direction.
• Check that the parameter Dry run PF is set correctly.
PILOT
23
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