rfiwireless.com.au
4
rfiwireless.com.au
5
PROBLEM: Power ON/OFF switch does not illuminate when turned on.
PROBABLE CAUSE
SUGGESTED REMEDY
No power in the AC outlet.
Check there is power in the outlet.
Internal Fuse Blown
Return the unit for Service
PROBLEM: AC side fuse blows as soon as power is turned on.
PROBABLE CAUSE
SUGGESTED REMEDY
Unit is defective.
Return the unit for Service
PROBLEM: The output voltage is 0 V or very low.
PROBABLE CAUSE
SUGGESTED REMEDY
Input voltage is very low.
Check that the input voltage is 120-240VAC
The unit is in current limit condition not due to
overload caused by large reactive loading or by
the output being short circuited
Check the output terminals are not shorted.
Remove the load. If the output loading or by
the output being voltage gets restored, the load
is shorted short circuited or is offering large
reactive impedance.
Unit is shut down due to over temp. (PSU-
1225G/1235G only)
Check that the fan has not failed or the vent
openings for obstructions.
PROBLEM: Output voltage drops as soon as the load is switched on.
PROBABLE CAUSE
SUGGESTED REMEDY
The unit is going into current limit protection
mode.
Reduce the load current to less than limit
protection mode the current limit value. Motors,
pumps, compressors, relays, incandescent
and halogen lamps and large capacitors in the
input section of the DC devices draw very high
inrush or starting currents of up to 10 times their
normal operating currents.
Ensure that these inrush/starting currents are
below the current limit value of the power supply
Troubleshooting
