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Aktor M
Troubleshooting
8. Troubleshooting
CAUTION
Risk of burns on hot surfaces or danger of
hypothermia on cold surfaces!
If there is a hardware or software error, an
unexpected positioning movement and opening of
the valve may occur. Severe burns or hypothermia
are possible when coming into contact with hot or
cold surfaces on valves and pipelines.
!
Before starting work, wait until the valve
has approximately reached the ambient
temperature.
!
Wear suitable protective clothing to avoid
unprotected contact with hot fittings or system
components.
8.1
Troubleshooting table
FAULT
The actuator does not move, the
LED is off
The actuator does not move, the
LED lights up green + the LED
flashes red
The actuator moves unstably
The actuator temporarily stops
The actuator does not move or
does not move correctly to the
valve position specified by the
input signal, the valve does not
close or open
115802384-V01.10.2022
CAUSE
Mains failure
The actuator is connected incorrectly
Short circuit due to incorrect
connection
The main board is defective
The actuator is in manual mode
Voltage failure due to too long
electrical connection cable and/or too
small a cross-section
The mains fluctuations are greater
than the permissible tolerance
The supply cable has a loose contact
The valve is stuck
The valve is stuck
The differential pressure is too high
The main board is defective
REMEDY
Restore the power supply.
Check and correct the cabling.
Check and correct the cabling.
Contact your specialist dealer.
Trigger an initialisation or set the jumper
between 0 and M
Measure the operating voltage. Recalculate
and replace electrical connection cables.
Improve the grid conditions.
Check and tighten the connections on the
terminal strip.
Ensure a smooth-running valve or replace
the valve.
Ensure a smooth-running valve or replace
the valve.
Set the differential pressure correctly.
Contact your specialist dealer.
19
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