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Version 4.37 • CE • ALIS Tube Lamp
21 May 2019
5.
Fault finding
If the ALIS-Lamps flash ON and OFF, this means you have too much load on the system. Start unclipping the
ALIS-Tube Couplers one at a time until the flashing stops.
5.1 Led Status Indicator & Reset Button.
To facilitate fault diagnosis, the PH500/200 has a bi-colour (red & green) status indicator.
When the Power Hub is performing normally the status indicator is solid GREEN. If another indication is observed,
please see the chart below for an indication. To remove the fault, press the reset button as shown below by the
red arrow.
LED Status Indicator
Operating Mode
Description
Action
Steady Amber
Input voltage too low.
Automatic lockout
when input supply
drops below 160 Vac
The ALIS-Hub resets when supply
returns to normal.
Flashing amber, 1
Flash per second, 50%
Duty cycle
Input voltage too high.
Automatic lockout
when input supply
exceeds 270 Vac
The ALIS-Hub resets when supply
returns to normal.
Flashing alternate red
and green, 2 flashes
per second 50% duty
cycle.
Power required exceeds power
available.
Too much load fitted
to the ALIS-Bus
Remove excess load. The system
automatically resumes normal mode of
operation
Solid red
(with system OFF)
Output voltage too high.
ALIS-Bus is
open circuit.
Repair fault in the ALIS-Bus. Reset the
system by pressing the reset button.
Solid red
(with system OFF)
ALIS-Hub only. Ground fault
protection.
ALIS-Hub has detected
a power imbalance in
the output current
(residual current)
>80mA rms
Disconnect from AC supply until LED is
extinguished. Examine the ALIS-Bus for
possible earth leakage. Reset button will
not allow re-start.
Flashes red, 1 flash
per second, 50%
duty cycle
Temperature too high.
ALIS-Hub case
temperature exceeds
90˚C (+/
-
5˚C),
shutting itself down.
The ALIS-Hub resets when temperature
returns to normal. This may take
several minutes.
The reset button on the power hub can only be pressed 3 times. Thereafter the power
hub must be reset by disconnecting it from the AC mains supply, waiting until the status
indicator has extinguished and then reconnecting it.
