Tech Controllers EU-T-5z WiFi User Manual page 26

Head alarm ERROR #3 – piston offset too
small
Head alarm ERROR #4 – no return
communication (to the head)
Error #1 – Calibration error 1 – Screw
retraction to mounting position took too
long
Error #2 – Calibration error 2 – Screw is
fully extended – no resistance during
extension
Error #3 – Calibration error 3 – screw
extension too short – screw resistance
encountered too early
Error #4 – Lack of feedback
communication
Error #5 – Low battery
Error #6 – Locked encoder
Error #7 – Current too high
Error #8 – Limit switch error
ERROR #1 - Calibration error 1
ERROR #2 - Calibration error 2
radiator
- Wrong valve on the radiator
- Valve jam
- Wrong valve on the radiator
- Valve stroke (offset) too small
- No signal
- No battery
STT-869 actuator alarms
- Limit sensor defective
- The actuator was not screwed on the
valve or it is not fully screwed on
- The valve stroke is too large or the valve
has non-standard dimensions
- Damaged actuator current measurement
system
- The valve stroke is too small or the valve
has non-standard dimensions
- Damaged actuator current measurement
system
- Battery weak
- Master controller disabled
- Poor signal or no signal to master
controller
- Defective RF module in actuator
- Battery low
- Damage to the encoder
- Unevenness, e.g. on the screw, thread,
causing high movement resistance
- High transmission or motor resistance
- Faulty current measurement system
- Faulty limit switch system
EU-G-X actuator alarms
Bolt retraction to mounting position took
too long.
Bolt maximally extended as it did not meet
any resistance during extension.
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- Replace the valve on the radiator
- Check the operation of the valve in the
radiator
- Replace the valve on the radiator
- Check valve stroke
- The controller is not able to operate the
head located at too great a distance.
- Insert the batteries into the head
The alarm is cleared automatically after
successful communication is established.
- Re-calibrate by holding down the
registration button until the LED flashes 3
times.
- Call service
- Check the correctness of the actuator
installation
- Replace the batteries
- Re-calibrate by holding down the
registration button until the LED flashes 3
times.
- Call service
- Replace the batteries
- Re-calibrate by holding down the
registration button until the LED flashes 3
times.
- Call service
- Check if the master controller is
operating
- Reduce the distance from the master
controller
- Call service
Replace the batteries
- Re-calibrate by holding down the
registration button until the LED flashes 3
times.
- Call service
Locked/damaged actuator piston. Check
the assembly and recalibrate the actuator.
- actuator was not screwed properly onto
the valve
- the actuator was not fully tightened onto
the valve
- actuator movement was excessive, or
non-standard valve
encountered
- motor load measurement
occurred
Check the assembly and recalibrate the
actuator.
failure