Operation
1. When Smart ATO RO is powered up, the LED indicator will fade up
blue and orange.
2. Smart ATO RO will perform a one-time lling automatically after
every power-up if the low level ATO sensor detects no water. If it
detects water after power-up, it will turn to standby mode.
3. Touching the button can start or pause lling manually.
*Please unplug the power cord and plug it back in to clear QST
memory.
**For small reservoirs, the High Level Failsafe Sensor may be triggered
after each re lling. This is normal and no action is required.
Blue
Alternating
&
Blue
Orange
*
Orange
Fading up with
a long beep
LED Color
Status
Description
Action
Solid
Circling
Flashing every
3 sec.
Flashing with
short beeps
Pump connection
failure
Standby Mode
Filling
Filling pauses
Low Level Failsafe
Sensor detects
no water
N.A.
Check the
connection of
the pump and
the controller.
Flashing with
short beeps
QST alarm:
abnormal lling
time
Check if the
RO/DI system
works
properly.
Flashing wit
h
short beeps
**
High Level
Failsafe Sensor
detects water
N.A.
N.A.
N.A.
N.A.
English
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