Frequently asked questions

Yes, you can. But you need to operate the thermostat box with the controller (36050) and then you can also use it with all other GROHE products (max 3 outlets). Each outlet delivers the same volume of water.

After testing various types of sensor, this was found to be the best, most intuitive and safest piezo technology which can be used with water. By pressing the buttons, you can be certain that the water temperature will not increase automatically (safety first).

The glass in this product range is hardened safety glass, so that a lot of force is required to break it. But if the glass should crack, it stays in its place.

No. All your personal settings are still available after the power cut

You can adjust the temperature (1 degree for the washbasin and 0.5 degree for the thermostat version) and the volume via the operating panel.

The water flow of the wash/bidet basin mixer starts immediately. All other digital products light up and when you have selected an outlet, the water starts running.

The GROHE Ondus® digital components which come in contact with water are supplied with 6 volts (low voltage), so there is no danger at all.

The GROHE Ondus® digital thermostat also has the “safe stop” safety feature. When pressing a temperature above 38 degrees, a plus sign appears which you have to press before a higher temperature can be reached.

The washbasin and bidet mixer have push-open waste set.

Power supply to the twin valve box or the thermostat box is via a plug power supply (220V/6V), which requires a socket. Additionally, you can order an inline transformer (36078).

You can order an additional inline transformer (36078).

Start at the bottom outlet (1) then 2 and then 3. So that no standing water remains in the box.

No. In the Aquafountain or the Freestander, each outlet is opened and closed electronically, so there is no need for a mechanical diverter.

In the box there is a template which can be used with a spirit level, so you can make sure it is absolutely vertical.

No. After installation of the mixer, the temperature has to be measured and calibrated, see set up menu. The displayed temperature is just an indication.

The pre set panel communicates via ordinary radio waves. The maximum distance between the puck and the twin valve can be 3 metres. The puck operates with a 6V Lithium battery.

Disconnect the power lead to the twin valve box for 10 seconds, then press the small point for 4 seconds. The operating panel shows a digit - the panel is connected.

Yes, the pipes should always be flushed without the end product.

The thermostat box outlet (mixed water) to the Aquafountain is ½”.

The twin valve box dimensions of 184 x 150 x 65 mm (7.2 x 5.9 x 2.5 inches). This excludes the connections to the box, so you should also calculate some space for that (incl. measurement drawing showing the location of the connections).

Cable number 4 is for a future application which is still under investigation.

No. You can only install it that way if you drill holes in the box so that the water can run out in case of leakage in the box.

Yes, you can. Both boxes operate using low voltage, 6 volts DC.

The maximum distance is 6 metres (3-metre length supplied in the box (65815)).

The shorter the better. The reason for that is that when the water temperature is being changed at the controller, the water will always need some time to flow through the pipe, so that you feel the new set water temperature a split second later.

Depending on local regulations, you can place the box under the bath, on the ceiling, behind the wall etc. The 6-metre cable gives the architect freedom of design. Please make the water connection as short as possible because of the response time. Please make sure that the box remains accessible for service purposes.

The thermostat box has dimensions of 420 x 177 x 68 mm (16.5 x 7 x 2.7 inches). This excludes the connections to the box, so you should also calculate some space for that (incl. measurement drawing showing the location of the connections).

The THM box has 3 outlets which can deliver around 55 litres per minute with a water pressure of 3 bar (dynamic pressure).

Every Grohe subsidiary has GROHE Ondus® specialists who can help you.

English is the universal language for leading technical products in the market.

All exposed electronic washbasin and bidet mixers have a battery backup to supply the mixer with power for about 4 days (depending on usage).

In the factory the thermostat is set to 38 degrees Celsius. Because of various parameters, it could be that the temperature is not exactly 38 degrees. It is always best to calibrate the unit after installation.

With the washbasin or bidet mixer with operating panel, you can:
A. Change the outlet connections via the menu
B. Change hot/cold water connections
With the TVM box (36065), you can:
A. Change the thermostatic cartridge in the box with a reversed thermostatic cartridge (47186)
B. Change the hot/cold connections to the box.

No. There is no need to update the software. It is tested before sending it out to the customer to provide maximum convenience.

You can change the outlet ports via the settings menu.

You can customise, Celsius/ Fahrenheit readings, 12/24 hour clock, back lighting contrast, blue /red vs. orange glow light feature etc.

All exposed electronic washbasin and bidet mixers have a backup battery to supply the mixer with power for about 4 days (depending on usage).

Please calibrate the unit via the menu (see Technical product information). The temperature at the washbasin outlet is purely an indication.

No. You have to replace the complete unit (45990).

A. Please check if the stop valves are open.
B. If this is the case, close the stop valves, unscrew the spout (small screw on the back of the spout). Inside the spout (thickest part) is a flow limiter. Flush out the dirt that has accumulated.

Recommended time is 10 years. If it is running low, the battery communicates this via the display.

No. Servicing the TVM box is not permissible, as otherwise the components inside may get damaged by the software.

The normal Grohe products functions smoothly under pressure from 1-5 bar. Pressure reducer installation is recommended so as to protect the water piping from leakage. In case water pressure is below 1bar, Grohe low pressure products are recommended.

Special products (shower panel, handshower, shower hoses…) are designed to create lower water resistance and higher flow rate, so as to work under low pressure situation as low as 0.1 bar.

Grohe products work smoothly with most storage as well as gas instantaneous heater, high power electricity instantaneous heater with low switch-on flow rate is also suitable. For details, please kindly consult our showroom staffs.

Grohe products are manufactured in a way to minimize daily maintenance; functional parts are designed to work under suitable situation (water pressure, water temperature…) for long life-span. To keep the surface always shiny, all you need to do is wipe with a warm towel. However if water supply is not completely clean, you are recommended to clean the in-built filter(s) regularly to ensure perfect water flow.

A thermostat maintains an exact water temperature of your choosing, even when water is drawn elsewhere in the home.

The thermostat mixer value mixes the hot and cold water and reacts instantly to any changes in the supply, ensuring the temperature is maintained to within + or –one degree.

Thermostatic values work by constantly mixing hot and cold water to a pre-selected temperature, so even if some one else in the house draws off water the thermostat reacts by rebalancing the quantities of hot and cold water to maintain the correct temperature. For convenience, peace of mind and economy all in one, a thermostat is a must.

If there is more than one person in your household, even though you may have already equipped with thermostatic water heater, a thermostat is still a must if you want a safe and comfortable shower.

The pre-set temperature is reached within a fraction of a second and remains constant so there is no risk of scalding.
GROHE thermostats also feature user friendly benefits such as GROHE Turbostat® and GROHE CoolTouch® . As well as a SafeStop button to prevent children from turning up the temperature and scalding themselves. An EcoButton is also available on certain models, which reduce water usage by 50%.
For ease of use, EasyLogic controls are intuitive to use and cater for the entire family, whatever their height.

Yes, GROHE offers many different models to suit every style of bathroom, including contemporary looks for concealed solutions or traditional exposed styles.
Whether you require a thermostatic mixer for your shower, bath or combined bath/shower mixer, GROHE thermostats will allow you to really Enjoy Water.