LLS 4000 4+

Control liquid level switches

Danfoss A/S

Designed for iPad

    • Free



Connect to and setup of any Danfoss LLS 4000/4000U liquid level switch with the LLS 4000 app. Commissioning, setup, and monitoring can all be performed quickly and conveniently with just a few taps on your smartphone.

The LLS 4000 app connects remotely to any LLS 4000/4000U liquid level switch via Bluetooth. Once they are paired up, you can select between essential functions.

For the non-SIL2 variant of the LLS 4000, the app enables you to select between several media1 and select switch function as normally open (NO) or normally closed (NC).
You can also monitor performance, including temperature and frequencies.

If you connect to a SIL2 variant, you do exactly the same as for the non-SIL2 variant except: A SIL2 variant is locked to a normally closed (NC) function and cannot be changed

The app has two modes: Service mode for commissioning and monitoring. If you’re a contractor, you can remain in Service mode to streamline the setup process. If you’re a system owner, the monitoring mode is your best friend—enabling you to quickly check your LLS 4000’s performance while walking by.

The app also limits the amount of code numbers you need to track, since the four variants2 of the LLS 4000 can be used in almost any refrigeration application.

R717 (Ammonia),R22,R507A,R134a,R404A,R407A,R410A,R513A,R1234ze(E),PAO (Oil),POE (Oil),Mineral (Oil)

LLS 4000 liquid level switch G 3/4”
LLS 4000 SIL2 liquid level switch G 3/4”
LLS 4000U liquid level switch NPT 3/4”
LLS 4000U SIL2 liquid level switch NPT 3/4”

What’s New

Version 2.1.4

The LLS 4000 app has been updated to support LLS 4000/4000U, PV03. The new version of the app is also backwards compatible with LLS 4000/4000U, PV02.
In the event your LLS device is running firmware PV01, please contact Danfoss before updating your app.

Minor improvements and bug fixes

We hope you will enjoy the update

App Privacy

The developer, Danfoss A/S, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Location
  • Usage Data
  • Diagnostics

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Location
  • Identifiers
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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