Product Manual

Troubleshooting

If the red OVERTEMP LED and the audible alarm come on, the unit has overheated, and it

will shut down until it cools off sufciently. You may not have allowed sufcient space

around the unit for cooling, or there may be too many devices connected to the output of the

unit. Either reduce the number of devices connected to the unit, or reposition the unit for

better cooling. If necessary, direct a stream of moving air over the unit.

If the red LOW INPUT LED and the audible alarm comes on, the input voltage has dropped to

below a usable level.

If the red LOW OUTPUT LED and the audible alarm comes on, and the green OUTPUT ON LED

is still on, but it is dimmer than normal, the unit is overloaded. Refer to the manufacturers

specications and add up the current ratings for each device connected to the unit. Make

sure that the total load does not exceed the continuous rating of the unit. Remove loads as

necessary to prevent the LOW OUTPUT LED from coming on.

If the LOW OUTPUT LED and the audible alarm come on, and the green OUTPUT ON LED is

completely off, the output of the unit has been shorted out, or there has been an internal

failure. Turn the unit off, disconnect all the loads connected to it, and turn it back on again.

If it comes on normally, turn it off again, reconnect one load, and turn it back on. Continue

reconnecting loads until the short circuit condition returns. Turn the unit off, disconnect the

faulty load, and reconnect it only after the fault is found and rectied. If the condition still

exists even after all the loads have been disconnected, the unit is defective, and must be

returned to the factory or an authorized service centre for repair.

If the unit will not turn on at all, check the input fuse. To do this, rst turn off the unit and

disconnect the I/P power. Remove the fuse and check it with an ohmmeter. If it is blown,

replace it with a new one. If that fuse blows as well or the unit still will not turn on, it is

defective, and must be returned to the factory or an authorized service centre for repair.