LEAK DEFENSE Dual LDS Fully Automated Leak Detection and Shutoff Valve User Guide

The control panel of the system provides information on device
communication, errors, notification quantity, water pressure &
temperature, water valve position, active scene, current water
flow, time to alarm setting, countdown trip rate timer, and
more.

Changing Scenes

The Scene button allows you to switch between Home, Away, and
Standby modes. Each mode adjusts the sensitivity and water flow
settings of the system based on your activity.

Anti-Scald Operational Features for Dual LDS

The system includes anti-scald features to prevent water from
reaching dangerously high temperatures.

Clearing the Alarm

If an alarm is triggered, follow the instructions on the control
panel to clear it.

Setting Up WiFi

Refer to the WiFi setup page in the manual to connect your
system to a WiFi network for remote notifications.

Setting Up Mobile Access

Refer to the Mobile Access setup page in the manual to enable
remote access to your system via a mobile device.

FAQ:

Q: How do I change the sensitivity settings of the Leak Defense
System?

A: You can adjust the sensitivity settings by changing the Time
to Alarm and Trip Rate parameters for each scene (Home, Away,
Standby) on the control panel.

Q: What should I do if I encounter an error with the
system?

A: If you encounter any errors or issues with the system,
contact our tech support line for assistance at 1-866-410-1134
during business hours.

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Quick Start Guide – Dual LDS
Fully Automated Leak Detection & Shutoff Valve (Dual)
Your system was set at the factory for the most common settings and should have been further calibrated by the installer. If you want remote notifications, you can refer to the WiFi and Mobile Access setup pages. Feel free to give our tech support line a quick call to double-check that your installer optimized your system for your unique living style. Need help?
Feel free to call us from 8am – 5pm Monday – Friday, Pacific Time: 1-866-410-1134, ext. 2 support@senthydro.com We are happy to work with you and your plumber or one of our 5000+ network of installers to ensure complete satisfaction with your Leak Defense System.
2025-04-23

Table of Contents
Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Changing Scenes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Anti-Scald Operational Features for Dual LDS . . . . . . . . . . 5 Clearing the Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Set Up WiFi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Set Up Mobile Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Applicable product versions:

· Control Panel 7.11

· LDS-3

3.16

· API-2

2.02

· POLD

4.00

Your Leak Defense System Control Panel

Device Communication
Errors
Notification Quantity
Water Pressure & Temperature
LDS1

Scene Override from API

High/Low Water Temperature

POLD Low Battery WiFi Signal Strength
Menu
Water Pressure & Temperature
LDS2

Water Valve Position & Turn Water On/Off

Identifies/ Changes Active Scene

Current Water Flow (%) LDS1

Time to Alarm Setting

Countdown Trip Rate Timer until Setting LDS Alarms LDS1 | LDS2

Current Water Flow (%) LDS2

Home (20-45 min recommended) The longest continuous flow in a home is typically a shower. Use this as a starting point for your Time to Alarm.
Away (2-5 min recommended) This is generally programmed to accommodate ice makers.
Standby Flow will be ignored while in Standby. Useful for when you know there will be water use for a long period of time.

MORE ABOUT SCENES
HOME, AWAY & STANDBY & when to use them!
The Scene button allows you to switch your Leak Defense System from Home to Away when you are leaving the house, or to Standby when extra water will be needed for an extended time.*
Turn Water On & Off The Water button will allow you to quickly shut the water off. Press this button and tap Yes when asked “Turn Water Off?”. The valve will close and the Water icon will turn GREY. When fully closed the Water icon will be YELLOW with a slash through it. To turn water back on, simply tap Water again and when asked “Turn Water On?” tap Yes.
Program the System The Time to Alarm and Trip Rate functions may need to be programmed (if they are not suited for the household) for both Home and Away when the Leak Defense System is first activated, but these settings may be changed or adjusted at any time.
While the Scene button shows Home , you can adjust the Home Scene’s Time to Alarm and Trip Rate. These will affect the overall sensitivity and time water can continuously flow when you are home.
While the Scene button shows Away , you can adjust the associated Time to Alarm and Trip Rate. These will affect the overall sensitivity and time water can continuously flow when the property is unoccupied.
While the Scene button shows Standby , flow will be ignored by the Leak Defense System for the time you specify. This will allow you to use water for an extended period of time without causing the system to alarm. Perfect for running a hose to fill up a pool!
*Can be triggered automatically with optional API (contact sales@senthydro.com to purchase) or adjusted with the Leak Defense System mobile app.
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ANTI-SCALD OPERATIONAL FEATURES FOR DUAL LDS

For Hardwired Control Panel: Control Panel is hardwired to LDS 1.
For Wireless Control Panel: Control Panel communicates wirelessly to LDS 1 & LDS 2.
For Both: LDS 1 is hardwired to LDS 2. LDS 1 controls both valves/ actuators, providing anti-scald.

LDS 1
Control Panel (hardwired)

LDS 2

Unique Operational Explanation:
1. If “LDS 1” alarms it will automatically shut both valves. The Control Panel will read back the alarm and go into an alarm state, putting “LDS 2” into alarm (valves already closed).
2. If “LDS 2” alarms, the panel will read back the alarm and go into an alarm state, putting “LDS 1” into alarm. This will trigger both valves to close.
Note 1: If Control Panel is not powered or connected to the Cat6 cable (or properly wirelessly paired & communicating), alarms sourced from “LDS 2” will not have a valve closure (until the panel is back online and/or connected to Cat6).
Note 2: Power is passed through “LDS 2” to “LDS 1”. Because “LDS 1” controls the actuators, it ensures that no valve can close unless both close (anti-scald).
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CLEARING THE ALARM
The alarm started sounding and I am home. What should I do? If you are unaware of any
normal appliance or fixture water flow…
And you don’t believe your water settings are set too conservatively, you will want to check for leaks. These can often be small leaks such as old toilet flappers, outdoor garden hose spigots, or small drips from tub or sink faucets.
If the water flow is due to a routine activity that normally occurs within your household…
You may want to adjust the Leak Defense System settings. If so, you will first select Clear Alarm and then select Turn Water On. You can then:
1. Increase the Time to Alarm setting or 2. For humidifiers and under-sink reverse osmosis (RO)
systems increase the Trip Rate setting.
*Increasing the Trip Rate will make your system less sensitive to smaller leaks.
If you are filling your swimming pool, using a hose bib for an extended time, or running water for some other reason…
Do the following after selecting Clear Alarm and then selecting Turn Water On:
1. Tap the Scene button and select Standby.
2.Tap the Time icon and enter the amount of time in minutes desired for the system to remain in Standby (Max is 48 hours or 2,880 minutes).
3. Tap the checkmark to confirm the time.
Let us help! Call 1-866-410-1134 ext. 2 Email support@senthydro.com
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SET UP WIFI
To connect to your 2.4 GHz WiFi access point: · Tap the Menu icon on the Leak Defense Panel · Tap WiFi · Tap View Networks and highlight your access point · Tap Select and enter your password · Tap twice and your panel will ask you to Save Changes · Tap Ok · The WiFi icon on the main screen will be GREY while it
attempts to connect. If successful the icon will turn GREEN. If unsuccessful it will turn RED. If the incorrect password or access point is entered into the
control panel you should go through the steps again and select the correct router and password. Router security/settings may restrict WiFi connection to the LDS. A separate access point may need to be purchased.
Let us help! Call 1-866-410-1134 ext. 2 Email support@senthydro.com
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SET UP MOBILE ACCESS
On your phone or laptop go to CatchALeak.com or download the Leak Defense App from the IOS or Android Store Click on REGISTER AS A NEW USER Fill out the form including the DEVICE ID that was supplied with
your system. Click on REGISTER. You should get a notice thanking you for registering. You will immediately receive an email with a link and/or a text to
which you will have to reply with a confirmation number. (Check your junk email) If on CatchALeak.com, close the page and reopen. Log in with your email address and password you created. You should see a screen showing a flow percentage arc with settings & controls next to it. Tap on the system tile if the settings aren’t shown. On this screen you can switch from Home to Away or Standby. You can also adjust the Trip Rate and the Time to Alarm. SETTINGS:
1. Manage alerts/notifications including selective disabling 2. Optionally add names for Point of Leak Detectors (POLDs) 3. Optionally schedule times for your system to automatically change scenes between Home and Away 4. Adjust your settings & more!
USA: T: 866-410-1134 · Support@senthydro.com · LeakDefense.com
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Documents / Resources

LEAK DEFENSE Dual LDS Fully Automated Leak Detection and Shutoff Valve [pdf] User Guide
Dual LDS Fully Automated Leak Detection and Shutoff Valve, LDS Fully Automated Leak Detection and Shutoff Valve, Fully Automated Leak Detection and Shutoff Valve, Leak Detection and Shutoff Valve, Detection and Shutoff Valve

References

User Manual