AutoAqua Smart ATO Duo G2 User manual

◆Siphon Break
2. Why there is water drops from the siphon break
when the pump is on?
3. What will happen if the siphon break is not set up
properly?
◆Installation
1. Can Smart ATO Duo G2 still work if the glass is not
transparent?
2. Can I fix the tube holder on a rimmed tank/sump?
3. Where should I place the sensor?
◆Accessory
1. How to use other pumps with Smart ATO Duo G2?
2. Can I use the solenoid valve with Smart ATO Duo G2?
How to install it?
3. How to extend the cable length of the pump/solenoid
valve/power supply?
4. How to purchase accessories?
1. How to set up the siphon break properly?

◆Trouble Shooting
1. Why does Smart ATO Duo G2 work constantly?
2. Why is the pump head not high enough?
3. Does Smart ATO Duo G2 have a failsafe mechanism
to prevent overfilling?
6. Is there an alert when the reservoir is empty?
4. Why is the water level always a little higher than the
sensor? Is the sensor broken?
7. Why does the controller flash blue and orange with
audible alert? I have checked the water reservoir and
the bubble but there was no problem.
5. Why isn’t work when water level is lower than sensor?

➢How to set up the siphon break properly?
First, make sure the siphon break is in the reservoir and
higher than the water level.
Therefore, the drops can go back to the reservoir and
break the siphon. The siphon break should be placed in
the area between the two red lines as the image below.
Second, the siphon break must be upright as the arrow
icon points up.

➢Why there is water drops from the siphon break
when the pump is on?
It is a normal phenomenon.
The small hole allows air in to cut the water flow when
the pump turns off.
If there is no water drops, please check if the hole is
clogged.

➢What will happen if the siphon break is not set
up properly?
⚫If the siphon break is not set inside the reservoir.
E.g., between the tank/sump and the reservoir or
inside the tank/sump, the water drops from the hole
of siphon break cannot flow back into the reservoir.
⚫If the siphon break is set in the wrong direction.
E.g., the arrow on the siphon break does not point
up, it cannot break siphon.

➢Can Smart ATO Duo G2 still work if the glass is
not transparent?
Yes.
Since the water level senor of Smart ATO Duo G2 is
inside the tank/sump, the glass color will not influence
its detection.

➢Can I fix the tube holder on a rimmed tank/sump?
Yes.
You can pull out the ring of the tube holder and install it
on another nail to fix it on a rimmed tank/sump.

➢Where should I place the sensor?
Place the sensor to the water level you desired.
*Please note : Set the sensor away from water outlet
and direct light to avoid bubble interference or
malfunctions.

➢How to use other pumps with Smart ATO Duo G2?
You can use a pump which meets your requirement with
our Smart AC Switch:
http://autoaqua.com.tw/en/accessories/SAC-10.html
Just connect Smart AC Switch with the controller, then
plug the pump's power adapter in it.

➢Can I use the solenoid valve with Smart ATO Duo
G2? How to install it?
Yes. The pump can be replaced to solenoid valve.
It is recommended using with filtered water instead of
tap water, or it will be clogged.
Please refer to the installation diagram below.

➢How to extend the cable length of the pump/solenoid
valve/power supply?
You can use the extension cable.
We have 6.7 ft (200 cm) and 16.7 ft (500 cm) available.
⚫Extension Cable of Power Adapter (200cm)
http://autoaqua.com.tw/en/accessories/DC-212.html
⚫Extension Cable of Power Adapter (500cm)
http://autoaqua.com.tw/en/accessories/DC-215.html
⚫Extension Cable of DC Refill Pump & Solenoid
Valve (200cm)
http://autoaqua.com.tw/en/accessories/DC-252.html
⚫Extension Cable of DC Refill Pump & Solenoid
Valve (500cm)
http://autoaqua.com.tw/en/accessories/DC-255.html

➢How to purchase accessories?
Please contact our local distributors :
http://autoaqua.com.tw/en/distributors.html

➢Why does Smart ATO Duo G2 work constantly?
If the water outlet is in the water and the water level of
the tank/sump is higher than level of the reservoir, the
water will flow back into the reservoir (back siphon), and
trigger the ATO constantly.
Please make sure the water outlet is always out of
water to prevent back siphon issue.

➢Why is the pump head not high enough?
⚫One of the possibilities is that the water inlet of the
pump is too close to the wall of the reservoir.
It is recommended to keep the pump away from the
wall of the reservoir at least 2 inches.
⚫The other one is that the pump should stay upright,
otherwise less water can go into the pump, which
makes the water pressure decrease.

➢Does Smart ATO Duo G2 have a failsafe mechanism
to prevent overfilling?
Yes.
Smart ATO Duo has a failsafe sensor (top sensor) and
Quick Security Technology (QST) to prevent overfilling.
Once the failsafe sensor detects water, it will stop the
pump and flash orange with 3 beeps as a reminder*.
Meanwhile, the controller will remember the length of
the first refilling time**.
When it detects the length of any other refilling time is
six times longer than the first time, it will stop refilling
and give an audible and visual alert.
For example, if the first filling time is 10 sec, it will alert
when any other refilling time is over 60 sec.
*For very small aquariums, the top sensor may be
triggered after each top off. This is normal and no
action is required.
**No security time control for the first filling.

➢Why is the water level always a little higher than
the sensor? Is the sensor broken?
There are several possibilities:
⚫The siphon break is not installed properly or clogged.
⚫The water inlet and the sensor are not in the same
reservoir.
⚫The tube is too long, so the water in the tube still fills
into the tank after the pump stops.
⚫The sensor is mounted in a small sump/tank.
It will stop the pump one second after it detects
water. However, the one-second filling is obvious in a
small sump/tank than in a big one.
You can follow the steps below to test if the sensor works
properly.
1. Cut off the power and mount the sensor above the
water line.
2. Move the outlet of the tubing to an empty container.
3. Connecting the power, waiting for the pump works.
4. Put the sensor in the water to see if the pump stops.
If the pump stops, it means the sensor works properly.
If it does not, please contact us. We will contact you as
soon as possible.

➢Why isn’t work when water level is lower than
sensor?
There are several possibilities:
⚫There is some algae on the sensor.
Please clean the sensor with soft brush.
⚫The sensor is too close to the water outlet.
Please set the sensor away from water outlet to
avoid bubble interference.
⚫The light shines directly to the sensor.
Please set the sensor away from direct light and
the sun to avoid malfunctions.
⚫If still not working after trying above 3 methods,
please contact us. We will contact you as soon as
possible.

➢Is there an alert when the reservoir is empty?
Yes.
When the reservoir is empty, no water is refilled in the
tank/sump which will cause the refilling time 6 times
longer than the first time.
Consequently, it will trigger an alarm and shut the pump
off.

➢Why does the controller flash blue and orange with
audible alert? I have checked the water reservoir
and the bubble but there was no problem.
The QST memory is not set correct.
Please unplug the power cable, mount the sensor at the
normal water level before connecting the power again
and do not move it afterwards.
If you want to move the sensor or change the water level,
you have to repeat the above steps.