Error Code and Error Message List
Error Code
Error Message
Required Action
1001, 1009
Normal charging is
not possible for
some reason. If this
message keeps
appearing, request
servicing.
Remove the charger cable from the watch, turn off
the watch, and then try charging again. Be sure to
use the charger cable that comes with the watch to
charge it as described under “STEP 1: Charge the
watch”.
If this message/error code keeps appearing, it
could mean that the chargeable battery has
deteriorated. Request servicing by your original
retailer or an authorized CASIO Service Center.
1003
Too cold to charge.
Charge the watch in an area where the ambient
temperature is between 10°C and 35°C (50°F and
95°F).
1004, 1007
Too hot to charge.
1021
Data acquisition
from the sensor may
have failed. Use the
Settings screen to
perform a System
Restart operation.
Data acquisition from one of the following sensors
may have failed for some reason: pressure sensor,
accelerometer, gyrometer, magnetic sensor,
optical sensor (PPG Heart Rate). Restart the watch
by performing the following steps: To restart, swipe
the watch face from top to bottom. On the screen
that appears, tap D, “System”, and then “Restart”.
If this message/error code keeps appearing after
restart, request servicing by your original retailer or
an authorized CASIO Service Center.
EN-104