Protections And Alarms - Tech Controllers EU-WiFi 8S p User Manual

XII. PROTECTIONS AND ALARMS
The device supports the following cases within a zone:
Alarm
No communication with the
sensor/wireless regulator
Actuator alarm – ERROR #0 – low
battery
Actuator alarm - ERROR #1 –
possible damage of mechanical or
electronic parts
Actuator alarm - ERROR#2 – the
maximum actuator stroke has
been exceeded
Actuator alarm - ERROR#3 – too
little piston movement
Actuator alarm - ERROR #4 – no
return communication (to the
actuator)
Error #1 - Calibration error 1 –
Moving the screw to the mounting
position took too much time
Error #2 - Calibration error 2 – The
screw is maximally pulled out. No
resistance while pulling out
Possible cause
- No range
- No batteries
- The batteries are flat
STT-868 actuator alarms
- The actuator battery is flat.
Some parts have been damaged
- 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
- The valve got stuck
- Inappropriate valve on the
radiator
- Too little stroke (movement) of
the valve
- Out of range
- No batteries
STT-869 actuator alarms
- The limit switch sensor is damaged
- The actuator has not been
screwed to the valve or has not
been screwed completely
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How to fix it
- Place the sensor/regulator in a
different place
- Insert batteries to the sensor/regulator
The alarm is deactivated automatically
when the communication is established.
- Replace the batteries
Call the service staff
- Install a piston controlling the actuator
- Check the valve stroke
- Install the actuator correctly
- Replace the valve on the radiator
- Inspect the valve operation
- Replace the valve on the radiator
- Check the valve stroke
- The actuator is too far from the
controller
- Insert batteries into the actuator
After the communication is re-
established, the alarm is deactivated
automatically.
- Calibrate actuator again by holding the
communication button until the third
flash of green light
- Call the service staff
- Check if the controller has been
installed properly
- Replace the batteries