Our answer to your questions

Good advice should never be expensive. Our overview provides answers to the most frequently asked questions about Homematic IP products and the topic of smart homes. 

General information

Is eQ-3 able to see my data? Which parts of my data are being saved? Where is the server located? How secure is the data?

The Homematic IP Cloud operates exclusively on German servers. In addition, Homematic IP does not require any personal data to be entered. The devices’ technical data is stored anonymously, making it impossible for any conclusions to be drawn about the identity of the user or individual user behaviour.

Homematic IP is the first and only smart home system to have been certified by the VDE Association for Electrical, Electronic & Information Technologies for its protocol, IT and data security – multiple times, in fact. Homematic IP communication is cryptographically protected even during installation, and during operation all messages are encrypted and authenticated, and thus are as secure as online banking. For users, this means that all device data is protected against misuse by third parties in accordance with the highest security standards.

The smart home Central Control Unit CCU3 offers a purely local solution without an internet connection. This provides extensive configuration options beyond the possibilities of the app, and all data is stored locally, without a connection to the internet.

Will there be running costs? If so, how much and for what?

There are no running costs for the Homematic IP system. The app, too, is available to download free of charge for both iOS and Android from the relevant store.

Can I only use Homematic IP in new buildings or is it also suitable for retrofits?

As a wireless solution, Homematic IP is suitable for retrofitting flats and houses – whether owned or rented – as well as for new buildings. Homematic IP is particularly suitable for smart-home beginners. However, it can also be used to expand existing Homematic solutions.

What is the difference between a smart home central control unit and the cloud solution?

Homematic IP offers various possibilities for setting up a smart home. It has the ideal solution for everyone, whether you choose a cloud solution or local data management, and whether you are a beginner or an expert.

The Homematic IP Access Point (HmIP-HAP) or the WLAN Access Point (HmIP-WLAN-HAP) acts as a gateway to the Homematic IP cloud, where the system data is stored securely and completely anonymously. The Homematic IP smartphone app is available as an intuitive operating element and can be downloaded free of charge from the Google Play Store for Android or the App Store for iOS operating systems. The combination of cloud and app means smart home setup and operation is particularly swift, simple and secure. Our cloud service not only enables the integration of Amazon Alexa and Google Assistant voice control services but also provides system control while on the move – with no additional costs or extensive configurations.

The smart home Central Control Unit CCU3 offers extensive configuration options as well as the facility to flexibly combine all Homematic IP wireless and wired devices. It stores all data locally and operates your smart home without an internet connection. It is set up using the browser-based WebUI. For remote control or use of apps, freely selectable third-party solutions are available (mediola, EASY SmartHome).

Does Homematic IP support Matter?

As the smart home market leader, we share the vision of a smart home in which all the devices communicate seamlessly with each other. We therefore welcome the development of Matter. We are closely monitoring and continuously evaluating the process.

Since its market launch in 2015, our smart home system Homematic IP has communicated using the IPv6 protocol, in other words, the protocol on which Matter is also based. We are pleased to see that other companies have now identified the IP protocol as a forward-looking solution. In order to achieve the goal of a truly accessible smart home, there are still some open questions that need to be clarified. The safety and quality of our products and solutions is always our top priority. With Homematic IP, both we and our customers are perfectly placed on the path to a smart future.

Can Homematic IP be integrated into Apple HomeKit?

For full integration into Apple HomeKit, a special Apple-certified component is required that isn’t available in the Homematic IP Access Points or the CCU3. A compromise solution, such as integration at a purely local level, would cause considerable functional restrictions for the user and therefore does not meet our requirements for a connection of this type.

For these reasons, we cannot currently offer integration in Apple HomeKit. However, we take our customers' wishes very seriously and incorporate them into the further development of our products whenever possible.

System

Meine Installation mit Homematic IP Fußbodenheizungskomponenten erreicht immer wieder das Duty Cycle-Limit. Woran liegt das und was kann ich dagegen tun?

Bei Homematic IP Installationen, in denen Wired- und Funk-Komponenten verwendet werden, kommt es bei der Verbindung von Wired-Wandthermostaten (HmIPW-WTH/STH/STHD) mit Funk-Fußbodenheizungscontrollern (HmIP-FALMOT-C12, HmIP-FAL24-C6/10, HmIP-FAL230-C6/10) zu einem erhöhten Funk-Aufkommen und damit schnell zum Erreichen des Duty Cycle-Limits.

Damit die Wired-Wandthermostate die Fußbodenheizungscontroller erreichen können, müssen die Informationen der Wandthermostate vom Homematic IP Wired-Bus in Homematic IP Funk übertragen werden. Dies geschieht je nach System über die Zentrale CCU3 oder über einen Homematic IP Access Point. Durch den regelmäßigen Informationsfluss zwischen Wandthermostaten und Fußbodenheizungscontrollern kommt es schnell zum Erreichen des Duty Cycle-Limits.

Wir empfehlen beim Einsatz eines Wired-Wandthermostats auch einen Wired-Fußbodenheizungscontroller zu verwenden. Umgekehrt ist der Einsatz eines Funk-Wandthermostats mit einem Wired-Fußbodenheizungscontroller unkritisch.

Warum werde Anfragen zwischen meiner Drittsoftware und der Homematic IP Cloud teilweise nicht beantwortet?

Homematic IP basiert nicht nur auf dem IPv6 Standard, sondern ist ein offenes System, bei dem nicht nur die Software der Linux-basierte CCU Zentrale, sondern auch die REST API der Homematic IP Cloud öffentlich zur Verfügung steht. Inzwischen gibt es in der Community mehrere Bibliotheken und eine Reihe von Software-Lösungen auf Basis dieser Schnittstelle.

Auch die Homematic IP Smartphone Apps basieren ausschließlich auf der REST API, die für interaktive Nutzung optimiert ist. Im Sinne der Performance für alle Anwender und die Qualität der Homematic IP Cloud ist es natürlich wichtig, eine „vernünftige“ Nutzung durch alle sicherzustellen. In der Vergangenheit haben wir beispielsweise ein hochfrequentes, dauerhaften „Pollen“ über die REST API festgestellt. Es gab auch Situationen, wo „ungeschickt formulierte“ Regeln in einer angebundenen Software-Lösung permanent mehrere Anfragen pro Sekunden gesendet zu haben.

Daher ist in der Homematic IP Cloud ein mehrstufiges „Throttling“ implementiert, mit dem die Anzahl der Anfragen auf der Ebene von TCP/IP und auch der Applikationsschicht auf ein Maximum gedrosselt wird. Dabei können Anfragen beim Überschreiten der Grenzen zeitweilig blockiert werden. Das Throttling ist automatisch und bedarf keines Rücksetzens durch den eQ-3 Support. Sollten Sie bei der Nutzung einer Software vom Throttling betroffen sein, bitten wir sie, sich an den Hersteller bzw. Programmierer der Software zu wenden. Die Grenzen wurden so eingerichtet, dass eine interaktive Nutzung – beispielsweise mit den Homematic IP Smartphone Apps – nicht behindert wird.

How can I access the possibilities of Advanced Routing?

Homematic IP Advanced Routing is a free update of the entire system and is already included in firmware version 3.53.26 of the CCU3. Version 2.2.18 is required for the Homematic IP Access Points HmIP-HAP and version 2.2.16 for the HmIPW-DRAP. The new firmware will subsequently be sent to the access points automatically.

The Homematic IP app version 2.4.0 (iOS) or 2.4.3 (Android) can be updated via the respective app store if automatic update is not activated.

Which Homematic IP functions are available during active or inactive internet connection?

The Homematic IP system is set up and controlled via the free Homematic IP smartphone app together with the Homematic IP cloud service.

Compared to other systems, Homematic IP actuators offer the distinct advantage that, thanks to a built-in memory, cloud-independent functions, such as heating schedules and time profiles, and individual devices’ communication with each other, remain autonomous even without an active internet and cloud connection.

Cloud-dependent functions are all rules created with the “Automation” function, shutter configurations such as lockout protection, storm protection, heat protection or escape function, and the integration of voice control. They are verified in the cloud and require an active internet and cloud connection at all times. We recommend connecting Homematic IP devices via group functions, such as light and shutter groups, for example. Not only does this reduce wireless traffic but the connections created via groups remain functional even when not connected to the internet.

When using voice command services such as Amazon Alexa or Google, we recommend using Homematic IP remote controls or push-buttons to control your devices, too, so that the components can also be switched without active voice control.

The following file gives an overview of available functions with or without active internet connection: 
Function overview for active and inactive internet connection

Wie viele Geräte kann ich in einem System anlernen?

Smart Home Zentrale CCU3:
In einem Homematic IP System gibt es in Verbindung mit der Smart Home Zentrale CCU3 eine Begrenzung auf 250 Geräte.

Access Point HmIP-HAP:
An einem HmIP-HAP können bis zu 80 Geräte angeschlossen werden. Dank Advanced Routing können mehrere Access Points kombiniert werden, wodurch zusätzliche Geräte in das System eingebunden werden können. Ein weiterer Access Point ermöglicht die Integration von 40 zusätzlichen Geräten.*

Wired Access Point HmIPW-DRAP:
An einem HmIPW-DRAP können bis zu 80 Geräte angeschlossen werden. Dank Advanced Routing können mehrere Access Points kombiniert werden, wodurch zusätzliche Geräte in das System eingebunden werden können. Ein weiterer HmIP-HAP ermöglicht die Integration von 40 zusätzlichen Geräten.*

WLAN Access Point HmIP-WLAN-HAP:
An einem HmIP-WLAN-HAP können bis zu 40 Geräte angeschlossen werden.

Homematic IP App:
Die App ist optimiert für die Verwaltung von bis zu 20 Räumen und 15 Smartphones. Eine Übersicht zur maximalen Anzahl von Räumen und Geräten innerhalb des Systems finden Sie auch im Homematic IP Anwenderhandbuch.

* Die initiale Vertriebsfreigabe gilt zunächst für zwei HmIP-HAPs, zwei HmIPW-DRAPs oder einen HmIP-HAP und einen HmIPW-DRAP in einer Installation mit App + Cloud oder CCU3.

Can the system’s wireless range be increased?

The Homematic IP wireless components’ open-air range of about 200 to 300 meters means they can generally communicate without interference even over considerable distances within buildings. However, where there are unfavourable structural conditions or a less than ideal component placement, the reception of individual components may not be optimal.

To optimise the wireless range in these cases, Homematic IP basically offers two options. You can find details of these in the User Guide under the section “Range extension”.

With Advanced Routing, the smart home system’s wireless range can be extended to accommodate buildings of practically any size. Concrete ceilings, basements or large properties are no longer a problem. To achieve this, several Homematic IP Access Points (HmIP-HAP) are simply connected via Ethernet, Powerline or a WLAN repeater with LAN connection.

Alternatively, the following products also offer the possibility of extending the range, although the use of an additional HmIP-HAP is preferable.

The Homematic IP system is based on the same particularly powerful and robust wireless technology that has already proved itself in millions of devices at Homematic, MAX! and also RWE Smart Home (innogy).

Can the Homematic IP products be directly linked to each other?

Some of the devices can communicate directly with each other. This means that links – for instance between window contacts and heating controllers or between wall thermostats and underfloor heating actuators – are available even if the internet connection is disrupted. The Homematic IP cloud service automatically determines all necessary links between the devices and then creates them independently.

Can I control Homematic IP devices without an access point, using Amazon Alexa or Google Home?

Homematic IP always connects to Amazon Alexa or Google Home through the Homematic IP cloud. The connection to the cloud is established via an access-point (HmIP-HAP or HmIPW-DRAP).

As a result, a direct connection between a Homematic IP device and a voice assistant is only possible via an access point.

Wie aktualisiert sich die Firmware meiner Homematic IP Geräte?

Damit Ihre Homematic IP Geräte immer auf dem neuesten Stand bleiben, bietet Homematic IP die Möglichkeit, die Gerätesoftware (Firmware) der Komponenten zu aktualisieren. Die Gerätesoftware steuert alle Funktionen Ihres Homematic IP Gerätes.

In der Regel kommt bei den Homematic IP Geräten das Background Update zum Einsatz. Dabei wird die Firmware des Geräts im Hintergrund per Funkverbindung aktualisiert. Einige andere Geräte werden über ein Live Update, welches direkt in der Homematic IP App durchgeführt werden muss, auf den aktuellen Stand gebracht.

Weitere Details hierzu finden Sie im Anwenderhandbuch im Kapitel "Geräteupdates".

Was muss ich bei der Installation des Firmware-Updates 3.53.30 (oder höher) meiner CCU3 beachten?

Wenn Sie die Version 3.53.30 (oder höher) für Ihre CCU3 einrichten möchten, beachten Sie die nachfolgenden Installationshinweise und folgen Sie den Anweisungen.

Installationshinweise für die CCU3 Firmware-Version 3.53.30 (oder höher)

What ports are required to operate the access point?

As a rule, the Homematic IP Access Point can be put into operation without changing the router settings.
However, when used in a VLAN or a guest network with limited options, for example, certain ports may have to be enabled for communication with the Homematic IP cloud.

If the access point cannot establish a connection to the Homematic IP cloud during commissioning (indicated by the system button flashing blue), this may be due to the individual settings on your router. Please also deactivate the energy-saving mode for the router port to which you have connected the Homematic IP Access.

For smooth operation of the Homematic IP system, the following TCP ports must be enabled:

  • Communication between HmIP-HAP, HmIP-WLAN-HAP or HmIPW-DRAP and the cloud: 80, 9292 and 43439
  • Communication between the smartphone app and the cloud: 6969, 8888 and 48335

If you still can't establish a connection to the cloud, check whether you have blocked BitTorrent in your router’s access profiles.

Homematic IP App

How do I add another access point in the Homematic IP app?

Pairing an additional access point (HmIP-HAP) or wired access point (HmIPW-DRAP) is just as easy as adding any other device. After the power supply of the (wired) access point has been established and the “Add device” function has been called up in the main menu of the Homematic IP app, the new device automatically appears in the app. Then you simply need to scan the QR code enclosed with the device, and it is ready for use.

More details can be found in the Advanced Routing tutorials.

Can I use the Homematic IP app with the CCU3?

The CCU3 offers extensive individual configuration options through the web interface, while the app is much simpler. Since the CCU3 is a purely local control of the Homematic IP smart home system, there is no connection to the cloud. Operation via the Homematic IP app is therefore not possible.

The CCU3 comes with a free licence for our partner solution from mediola. You can use this to create your own personalised app based on the modular principle.

In which languages is the Homematic IP app available?

Currently, the Homematic IP app is available in Danish, Dutch, English, Finnish, French, German, Italian, Norwegian, Polish, Russian, Spanish and Swedish.

Sind Homematic Geräte nun auch mit der App bzw. Cloud kompatibel?

Nein, die Homematic Geräte (nicht Homematic IP) werden von der Homematic IP App-Lösung nicht unterstützt.

Heating and climate

Meine Installation mit Homematic IP Fußbodenheizungskomponenten erreicht immer wieder das Duty Cycle-Limit. Woran liegt das und was kann ich dagegen tun?

Bei Homematic IP Installationen, in denen Wired- und Funk-Komponenten verwendet werden, kommt es bei der Verbindung von Wired-Wandthermostaten (HmIPW-WTH/STH/STHD) mit Funk-Fußbodenheizungscontrollern (HmIP-FALMOT-C12, HmIP-FAL24-C6/10, HmIP-FAL230-C6/10) zu einem erhöhten Funk-Aufkommen und damit schnell zum Erreichen des Duty Cycle-Limits.

Damit die Wired-Wandthermostate die Fußbodenheizungscontroller erreichen können, müssen die Informationen der Wandthermostate vom Homematic IP Wired-Bus in Homematic IP Funk übertragen werden. Dies geschieht je nach System über die Zentrale CCU3 oder über einen Homematic IP Access Point. Durch den regelmäßigen Informationsfluss zwischen Wandthermostaten und Fußbodenheizungscontrollern kommt es schnell zum Erreichen des Duty Cycle-Limits.

Wir empfehlen beim Einsatz eines Wired-Wandthermostats auch einen Wired-Fußbodenheizungscontroller zu verwenden. Umgekehrt ist der Einsatz eines Funk-Wandthermostats mit einem Wired-Fußbodenheizungscontroller unkritisch.

What is the temperature offset for radiator thermostats?

If the radiator is installed in an awkward location (e.g. behind a curtain or cupboard), the temperature measured by the sensor may deviate slightly from that in the room. If the thermostat is unable to compensate
for the difference, a general adjustment must be made using the temperature offset. The temperature offset can be set individually for every thermostat in each room in a range of +/- 3.5 °C.

If, for example, 18 °C is measured in the room when a temperature of 20 °C has been set, an offset of -2.0 °C must be set. An offset temperature of 0.0 °C is set in the factory.

What do the climate control operating modes do?

Your Homematic IP climate control solution offers five operating modes:

  • In automatic mode, the system controls the temperature according to the heating schedules you have defined and selected.
  • In manual mode, you can manually regulate the room temperature independently of the heating schedules.
  • In eco mode, which can be activated via the home screen on the app or via the Homematic IP Wall-Mount Remote Control, all or any rooms equipped with radiators or electric heaters are automatically lowered to a predefined eco temperature (reduction temperature), for example after pressing the wall-mount remote control when leaving the house.
  • In party mode, you can maintain the room temperature at a certain temperature value for a precisely defined period of time.
  • In holiday mode, you can lower the room temperature to a freely selectable temperature value until a time you define if you are going to be away for any length of time. In holiday mode, the temperature of the floor heating system is also lowered.
What do I do with my radiator thermostats in the summer?

The valve protection function ensures the radiator thermostat actuators are periodically activated during periods without temperature regulation, e.g. in summer, to prevent the valves from sticking. You can define the time interval (off, 1–28 days) as well as the activation duration (0–10 minutes).

Can I use a window contact for both climate control and security?

A window contact can be operated across several areas on a Homematic IP Access Point or a CCU3. It is not necessary to have multiple window contacts on a window.

Shutters, blinds and awnings

Can I control my shutter and blind actuators using voice assistants?

Linking Amazon Alexa or Google accounts with your Homematic IP smart home system offers you the option of controlling numerous Homematic IP devices and functions via voice commands in conjunction with one or more compatible speakers with integrated voice assistance.

In addition, you can use smartphone apps such as Google Assistant to control your Homematic IP smart home system with voice commands – even without using the Google Home speaker.

The many voice control options include controlling shutter and blind actuators – with both Amazon Alexa and Google Home.

You can find a detailed overview of the control options in our user manual in the chapter “Voice control and additional services”.

What must I consider when using shutter or blind actuators in conjunction with an isolating relay?

The Homematic IP shutter (HmIP-BROLL) and blind actuators (HmIP-BBL) for brand switches have a measuring function that detects, based on the load applied, whether the shutter is moving or has reached an end position. The measuring function anticipates a minimum load of 5 watts at the actuator output when the movement begins. If this load is not reached, as happens under certain conditions, the actuator immediately stops the movement.

When an isolating relay is used, we recommend deactivating the “automatic detection of end position” option in the app’s “device overview”. Then carry out a manual calibration drive in the device configuration under the item "movement times".

If a manual calibration was already carried out during set-up, the measuring function is deactivated from the start.

Always here for you and your queries.

Whether you have a question about a product, something isn’t working as you wanted, you’re looking for a specialist partner, or you simply want to give us feedback: we are always here to help.

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