September 2021
Installation, Operation and Maintenance Manual
VCIOM-01249-EN Rev. 0
103
Troubleshooting
Section 12: Troubleshooting
Table 17.
Alarm Table
Available controls
Display
message
Condition for alarm
Action
Local
Remote
ESD
Alarm reset
High torque
in closing
Measured torque greater
than the relevant value
configured in torque set-up
or stroke limits routine
Operate the actuator
in open direction.
Check the torque
needed to operate
the valve
Only
open
Only open
Configuration
dependent
Close control
High torque
in opening
Measured torque greater
than the relevant value
configured in torque set-up
or stroke limits routine
Operate the actuator
in close direction.
Check the torque
needed to operate
the valve
Only
close
Only close
Configuration
dependent
Open control
Jammed valve
in closing
No position change after
receiving a CLOSE control
and motor speed is 0 RPM
Check status of
actuator and valve
mechanical parts
Only
open
Only open
Only open
Open control
Jammed valve
in opening
No position change after
receiving an OPEN control
and motor speed is 0 RPM
Check status of
actuator and valve
mechanical parts
Only
close
Only close
Only close
Close control
Motor
thermostat
Motor thermostat open for
high temperature in the
motor windings
Wait until the motor
cools down
Not
available
Not available
Configuration
dependent
When thermostat
close
Internal
temperature
Temperature inside the
actuator enclosure higher
than 90 °C or lower than
-40 °C
Ambient temperature
too high or too low.
Verify insulation
among actuator and
heat source
Not
available
Not available
Not available Control
temperature <90
°C or >-40 °C
Position
sensor
Value of the actuator
position not valid
Replace position
sensor or re-calibrate
both stroke limits
Not
available
Not available
Not available Position signal
correct
Speed sensor
Measure of motor speed
not valid
Replace speed sensor
Not
available
Not available
Not available Speed signal
correct
Mid travel
alarm in OP
The valve does not move
in presence of an open
control and motor speed
is 0 RPM
Check status of
actuator and valve
mechanical parts.
Recalibrate both
stroke limits.
Only
close
Only close
Only close
Close control
Mid travel
alarm in CL
The valve does not move in
presence of a close control
and motor speed is 0 RPM
Check status of
actuator and valve
mechanical parts.
Recalibrate both
stroke limits.
Only
open
Only open
Only open
Open control
Main voltage
Main voltage lower than
-20% or higher than+20%
of the value stated in the
nameplate menu or wrong
frequency
Check main
voltage supply
and frequency on
terminals L1, L2, L3.
Check that wires
section is correct
Not
available
Not available
Not available Main voltage
correct
K1 contactor
The test routine reports
a failure of K1 (coil or
auxiliary contact)
Check the contactor
Opposite
direction
Opposite
direction
Not available
if esd use k1
contactor
Control in
opposite
direction
K2 contactor
The test routine reports
a failure of K2 (coil or
auxiliary contact)
Check the contactor
Opposite
direction
Opposite
direction
Not available
if esd use k2
contactor
Control in
opposite
direction
Configuration
error
The checksum of the
EEPROM memory that
contains the configuration
data is wrong
Re-configure all
parameters
Not
available
Not available
Not available Memory OK