Page
18
of
28
Version 4.37 • CE • ALIS Tube Lamp
21 May 2019
5.2 Fault finding guide
1.
Firstly, ascertain what is or isn’t happening with the system. There are commonly two scenarios.
ALIS Tube(s) are completely extinguished.
ALIS Tube(s) are flashing or flickering.
2.
Once i or ii has been ascertained the next step is to find the reason.
3.
ALIS Tube (s) are completely extinguished. If there is just one or more, but not all, ALIS Tubes extinguished,
first check their through connection(s) to the associated ALIS Tube Coupler and ALIS Tube End Connector.
If these are OK open the associated ALIS Tube Coupler and remove it from the ALIS Bus at the same time
inspecting the cable for damage. Check the ALIS Tube Coupler is free of contaminates and if required clean with
a soft cloth. If the ALIS Bus is OK refit the ALIS Tube Coupler. If the problem has not been resolved replace the
ALIS Tube Coupler or problem ALIS Tube.
4.
If all ALIS Tube s are extinguished continue as follows.
i.
Check the ALIS Hub status LED as described on page 9 and attempt to resolve the problem by carrying
out the listed actions.
If the ALIS Hub status LED is showing a steady green light, and a competent person is present, bypass the ALIS
dimmer by first disconnecting the 230VAC supply to the ALIS Hub, disconnect the ALIS Dimmer from the ALIS Hub
and ALIS Bus and connect the ALIS Hub directly to the ALIS Bus, reconnect the 230VAC supply to the ALIS Hub.
This will confirm whether the ALIS Dimmer has a problem.
If the status LED is completely extinguished check there is an adequate mains supply present. Once the correct
supply voltage level is ascertained attempt a power up reset. If this does not resolve the fault replace the power
hub, firstly carrying out the check list on page 8.
5.
ALIS Tube(s) flashing or flickering. If this is the observed fault, then in all probability the ALIS hub is not the
problem. Firstly, ascertain whether it is a few ALIS Tubes or all the ALIS Tubes on the ALIS Bus, if it is
continuous or only occurs at certain times of day. Has it only just started to happen?
ii.
If there are only a few of the ALIS Tubes showing fault symptoms, then in all likelihood it is a local
problem to those ALIS Tubes and ALIS Tube Couplers. First check the through connection(s) to the
associated ALIS Tube Coupler and ALIS Tube End Connector. If these are OK open the ALIS Tube Coupler
and remove it from the ALIS Bus at the same time inspecting the cable for damage. Check the ALIS Tube
Coupler is free of contaminates and if required clean with a soft cloth. If the ALIS Bus is OK refit the ALIS
Tube Coupler. If the problem has not been resolved replace the ALIS Tube Coupler or problem ALIS Tube.
iii.
If it is all the ALIS Tubes on the ALIS Bus and the ALIS Hub shows no signs of fault, then it is most
probably an external issue such as electrical noise which can be very difficult to pin point. Firstly, try to
ascertain if there have been any changes in the immediate area such as new equipment installed or any
cable rerouting. As a process of elimination try to locate the problem item by switching off other
equipment. As this is a process of elimination a considerably amount of time may be required, but in the
end, it should be easily remedied.
If any problems or faults occur that are outside any of the above or you are having difficulties, please do not
hesitate to contact
further guidance.
