Mitsubishi FREQROL-SFJ - Over Heat am

(13) OVER HEAT AM?.
C‘
c
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This alarm appears if thermal protector of FR-SFj
trips (installed on cooling fan).
Cause
Checkup
Remedy
Overload
1. Check motor for load condi- 1. Lighten load.
tion.
2. Check motor start/stop fre- 2. Decrease
quency. start/stop
frequency.
High ambient temp-
Measure the ambient tempera- If the ambient
erature
ture. temperature is
higher than 55'C,
appropriate pro-
vision shouid be
made to cool.
Trouble with cool- Check if the FR-SFJ cooling Replace the cool-
ing fan fan does not work properly.
ing fan.
Heat radiating fins Check if heat radiating fins
Clean the fins.
fouled on the back of FR-SFJ are
fouled heavily.
Fuse blown out Check if fuse is blown out.
Replace the fuse.
If new fuse is blown out
Refer to "Alarm
again . . . .
46".
c
-103-