Mitsubishi Electric A173UHCPU User Manual page 125

5. INSPECTION AND MAINTENANCE
(6) Flowchart when ERROR indicator is flashing
Follow the flowchart below if the ERROR indicator flashes during operation.
ERROR indicator flashing
Does
special register D9124
contain 0?
Reset the coil of the
annunciator which is ON
using the RST F
YES (0)
NO (not 0)
instruction.
End
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Contact your nearest
Mitsubishi representative with
details.