17
VII.
PROTECTIONS AND ALARMS
Alarm type
Possible cause
How to fix it
Sensor damaged (room sen-
sor, floor sensor)
Sensor short circuit or damage
– Check the connection with the
sensor
– Replace the sensor with a new one;
if necessary contact the service staff.
No communication with the
sensor / wireless room
regulator
- Out of range
- No battery
- Battery consumption
- Put the sensor/regulator in a
different place
- Insert batteries into the
sensor/regulator
After the communication is
reestablished, the alarm is deleted
automatically
Alarm: no communication
with module/ wireless con-
tact
No range
- Put the device in a different place or
use a repeater to extend the range.
- The alarm deactivates automatically
when communication is established.
Alarm actuator STT-868
ERROR #0
Flat battery in the actuator
- Replace the batteries
ERROR #1
- Some parts have been damaged
- Call the service staff
ERROR #2
- No piston controlling the valve
- Too big stroke (movement) of the
valve
- The actuator has been incorrectly
mounted on the radiator
- Inappropriate valve on the radiator
- Install a piston controlling the
actuator
- Check the valve stroke
- Install the actuator correctly
- Replace the valve on the radiator
ERROR#3
- The valve got stuck
- Inappropriate valve on the radiator
- Too little stroke (movement) of the
valve
- Inspect the valve operation
- Replace the valve on the radiator
- Check the valve stroke
ERROR #4
- Out of range
- No batteries
- The actuator is too far from the
controller
- Insert batteries into the actuator
After the communication is re-
established,
the alarm is deactivated
automatically.
