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Abnormal Pressure Detection Error Warning
When abnormal atmosphere pressure is detected during use on land, or
when ascending to high locations more than 3,000 m (10,000 ft) above
sea level, "ERR" (Error) flashes in the lower left corner of the display.
The watch does not switch to the dive mode even if the water sensor
gets wet while this warning function is activated.
If "ERR" does not disappear from the display even after a long period of time, there may
be a problem with the pressure sensor. When this happens, discontinue using the watch
and consult a Citizen Service Center.
Water Sensor Check Warning
If the preliminary dive display continues to be displayed for more than 1
hour after the water sensor has gotten wet and the watch has switched
to the preliminary dive display in the dive mode, "CHK" (Check) flashes
in the lower left corner of the display to inform the wearer that the water
sensor should be checked.
* "CHK" also flashes when the watch returns to the normal display from any of
the correction states, when the watch is returned to the time mode of the standard mode from the infrared
communication mode, and when the water sensor is operating during the all reset procedure.
The watch does not switch to the dive mode (water depth measurement display) when "CHK" is
flashing.
To check the sensor, remove any debris or moisture from the water sensor with a dry
cloth. The display returns to normal when the water sensor is canceled.
Ascent Rate Warning
When the ascent rate during scuba diving exceeds 18 m (60 ft)/min, the
ascent rate warning alarm sounds for 5 seconds and "SLOW" and an
illustration of a turtle are displayed at the bottom of the display.
The ascent rate warning alarm stops sounding when a proper
ascent rate is resumed.
* The ascent rate warning alarm does not sound during skin diving (continuous diving for less than 3 minutes
at a depth of 1 m (4 ft) or more).
Abnormal Depth Warning
When a sudden change in depth of more than 4 m (13 ft)/sec is
detected during diving, the watch assumes that the watch has reached
an abnormal depth. At this time, "ERR" and the diver mark are
alternately displayed in the lower left corner of the display.
Once "ERR" has been displayed during diving, it continues to be
displayed until the dive mode is terminated.
CAUTION
Avoid using this watch in environments subject to sudden changes in water
pressure such as when using ocean floor excavation or similar equipment.
The vibrations from such equipment may cause a change in water pressure of "4 m (13 ft) or
more per second" to be locally and momentarily applied to the pressure sensor of the watch,
causing "ERR" to be displayed and preventing water depth from being displayed correctly.
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