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TROUBLESHOOTING - GENERAL
PROBLEM : Power ON/OFF switch does not illuminate when turned on.
PROBABLE CAUSE
No power in the AC outlet
AC side fuse inside the power
supply is blown
PROBLEM : AC side fuse blows as soon as power is turned on.
PROBABLE CAUSE
Unit is defective
PROBLEM : The output voltage is 0 V or very low
PROBABLE CAUSE
Input voltage is very low
The unit is in current limit condition
due to overload caused by large reactive
loading or by the output being
short circuited
Unit is shut down due to over
temp. (SEC-1223CE)
PROBLEM : Output voltage drops as soon as the load is switched on
PROBABLE CAUSE
The unit is going into current
limit protection mode
SUGGESTED REMEDY
Check there is power in the outlet.
Replace the fuse inside the unit. See
fuse ratings at page 8
SUGGESTED REMEDY
Call technical support.
SUGGESTED REMEDY
Check that the input voltage is 230 VAC
Check the output terminals are not
shorted. Remove the load. If the output
voltage gets restored, the load is shorted
or is offering large reactive impedance.
Check that the fan has not failed or
the vent openings are not blocked
SUGGESTED REMEDY
Reduce the load current to less than
the current limit value. Motors,
pumps, compressors, relays, incan-
descent 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. En-
sure that these inrush/starting cur-
rents are below the current limit value
of the power supply.
4.
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