Mitsubishi Electric FR-D720-008 Instruction Manual page 247

(2) Clearing procedure
POINT
Set "1" in Er.CL Fault history clear to clear the faults history. (Parameters are not cleared when "1" is set in Pr. 77
Parameter write selection.)
Operation
1.
Screen at powering on
The monitor display appears.
2.
Press to choose the parameter setting mode.
3.
Turn until
appears.
4.
Press to read the present set value. "
value) appears.
5.
Turn to change it to the set value "
6.
Press to set.
Turn
Press
Press
Parameters referred to
Pr. 77 Parameter write selection
(faults history clear)
" (initial
".
to read another parameter.
to show the setting again.
twice to show the next parameter.
Refer to page 159
Check and clear of the faults history
PRM indication is lit.
(The parameter number read previously
appears.)
Flicker...Faults history clear complete!!
Display
243
4