10-3
IM CW500-01EN
10.2 Error Messages and Corrective
Actions
Messages may appear on the screen during operation.
This section describes the error messages and how to respond to them.
Message
Description and Corrective Action
No SD card.
• Check that an SD memory card is inserted properly.
For details, see “Inserting and Removing the SD
Memory Card” in the Getting Started Guide.
Check the amount of
free space in the SD
card.
Check the amount of
free space in the SD
card.
• Check the free space on the SD memory card.
If there is not enough free space, delete files
or format the SD memory card, or use another
SD memory card that has been formatted on
the CW500. For details, see “Recorded Data
Operation” in section 5.6.
Failed to detect
sensors. Check the
connection of the
sensor(s).
• Check that current probes are securely connected to
the CW500.
• If you suspect a malfunction, check with the following
procedure.
Connect the current clamp-on probe that failed
to a channel that detection was successful, and
test again. If the same channel fails again, the
instrument may be malfunctioning. If detection fails
on the channel connected to the current clamp-on
probe that failed to be detected the last time, the
current clamp-on probe may be malfunctioning. If
a malfunction is found, stop using the CW500 or
probe immediately.
Battery level is low.
Powering off…
• Use AC power, or replace the AA alkaline batteries
(LR6) with new ones or the AA nickel-metal hydride
(Ni-MH) batteries with recharged ones. For details,
see “Installing Batteries” in the Getting Started
Guide.
Not having free
space on the internal
memory. Format the
memory or delete
unnecessary files.
• Check the free space in the internal memory and the
number of saved files. Up to three measured data
files and eight other files can be saved to the internal
memory. If there is not enough free space, delete files
or format the memory. For details, see “Recorded
Data Operation” in section 5.6.
