Toto USWN900 Series Instruction Manual And Warranty page 25

Detection LED lights up or flashes
In the AC type and dry type, the sensor detection LED may light up or
flash. When the LED lights up or flashes, it means the following.
<Indicating the urinal is being used>
・AC type: Lights up
・Dry type: Does not light up
<Indicating interval discharge pipe flush
or intermittent spray flush is operating>
・AC type: Flashes
・Dry type: Flashes
<Indicating "ewater+" cleaning is operating>
・Super water saving type: Flashes
<Indicating part replacement for "ewater+">
・Super water saving type: Flashes quickly
* If you see quick flashing, contact the installer
or seller to repair it.
* The water volume may be increased temporarily
to reduce dirt adhesion on the trap.
Water flushes on its own
This product has the following automatic flushing functions.
<Interval discharge pipe flush>
In addition to flushing after every use, discharge pipe flushing is performed every 2 hours.
pipe flushing is performed efficiently using 2 flushes, reducing urine accumulation and
urolith adhesion inside the discharge pipe.
<Intermittent spray flush>
To prevent damage due to sudden winter cold in normally temperate regions, the ambient temperature
is detected and intermittent flushing is performed to minimize the risk of freezing.
< "ewater+" cleaning > * Super water saving type only
Time periods when the urinal is not used for a long time, such as at night, are judged automatically and
the trap is filled periodically with "ewater+". Because the occurrence of dirt inside the trap is reduced,
the flush volume after use can be reduced.
* "ewater+" is water created by electrolyzing chloride ions contained in tap water, and includes sanitizing
components (hypochlorous acid).
CAUTION
The above effects cannot be obtained while the power supply is off.
* If the frequency of the water flushing on its own does not match the cases
described above, contact the installer or seller to repair it.
<Indicating backup battery is discharged>
・Dry type: Flashes
(Flashes in 4-second cycles)
<Indicating the power is turned on
(10 minutes only)>
・AC type: Lights up
・Dry type: Flashes
* Cannot be used for 5 minutes after
connecting the backup battery.
* For 5 to 10 minutes after connecting the
backup battery, the detection LED flashes
during photoelectric sensor detection to
enable the detection status to be confirmed.
After this, the detection LED does not flash
even during detection.
Discharge
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