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E6581371c
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4. Before making a service call
If a problem arises, please see the following trouble-shooting tables. If the problem can not be
solved, please contact a Toshiba distributor.
4.1. Display of service LED
Service LED indicates the condition of nodes.
1
2
3
4
5
6
1 3452
OFFON
Power
ON
Time (second)
Continues to be OFF
Continues to be ON
Momentarily OFF then continues to be ON
Repeats ON and OFF
Repeats ON and OFF
Continues to be OFF
No Phenomenon
Problem & Solutions
1
Although the inverter is turned
on, LED remains OFF.
2
LED continues to be ON after
the inverter is turned on.
Check the connection the inverter and the optional unit. If
abnormality is not found after checking, it needs to be repaired.
3
LED is ON then OFF when
the inverter is turned on, and
it continues to be ON.
Internal application program is abnormal.
It needs to be repaired.
4 LED blinks every 0.5 second.
A watch dog is suspected. If the same indication appears after
resetting the power, it needs to be repaired.
5 LED blinks every 1 second.
This is a normal action of the "Unconfigured" device. If the device
is not "Unconfigured", Internal application program is broken. It
needs to be repaired.
6
LED momentarily turns ON
then continues to be OFF.
When the program is in the condition of "Configured" status, LED
momentarily turns ON when the inverter is turned on. Then the
LED continues to be OFF for some seconds. The node indicates
"Configured" status that means the normal condition.
LED Flickers CPU is abnormal. It needs to be repaired.
LED is turned on while
pushing service pin.
Normal operation while pushing service pin.
4.2. Other problems
Phenomenon
Problem and Solutions
No replying from LONWORKS
communication option
Check proper termination resister is installed on the network.
(See section 3.5.)
After checking the service LED status, see the previous section.
Communication error
in network variable
Remove RS485 communication option from RJ45.
Check the inverter parameter setting (refer to section 3.2).
Check the network cables are not near the power cables.