Electric Switch + Temperature Probe Missing Temperature

Owned by Simon Turner
Sept 16, 2024

This article is an excerpt from the Genius Hub Doctor, which is built into the App.

These instructions are provided so that the step-by-step information is available to users, but please note that these actions should generally be carried out whilst using the Doctor.

To access the Doctor, click here

Solution ID: 7161

Step 1

The Hot Water Time & Temperature addon is made up of two parts

1. The Electric Switch (which is wired into the mains, communicates with the Genius Hub and can switch an immersion heater of less than 13A.

2. The Tank Temperature Prove (which measures the temperature of the hot water tank

The Electric Switch is reporting that the Temperature Probe has become disconnected.


Step 2

To fix the connection of the Temperature Probe to the Electric Switch:

Do not do anything with electrical wiring, unless you are confident and competent to do so!

UK legislation says that:

" A competent person is someone who has sufficient training and experience or knowledge and other qualities that allow them to assist you properly. "

We may mention in these instructions to do checks on wiring - if you are not a competent person, then you should have an electrician carry out these checks.

Unfortunately, Genius Hub are unable to provide assistance with checking wiring. An 'electrically competent person' will be able to use the wiring diagrams that we provide to check or install a Genius Hub system. To see our map of registered Genius Hub Trained Installers, Click Here .

1. Turn off the power to the Electric Switch, this should be possible by turning off the switched fused spur near the Electric Switch.

2. Check the power is off by pressing the button on the front of the Electric Switch. If the power is off, no red lights will appear on the device.

3. Remove the cover from the Electric Switch.

4. Undo the 2 screws which attach the Electric Switch to the pattress box.

5. Wire the Temperature Probe back into its dedicated terminals near the bottom of the Electric Switch. Note: the Temperature Probe wires do not have a right way around. Each wire can be wired into either terminal.

6. Re-fasten the Electric Switch, re-attach the cover (starting at the top) and power on the Hot Water Time & Temperature addon.


Step 3

Now select the Electric Switch on the app. The ID of the Electric Switch may be printed on a sticker on the button of the Electric Switch.

The Doctor will ask you to select the relevant device


Step 4

Now the Electric Switch needs to be re-configured to ensure it can report the temperature.

The Doctor will communicate with the device


Step 5


To ensure that the new temperature gets through to the Genius Hub, we trigger the Electric Switch to communicate with the Genius Hub.

The Doctor will communicate with the device


Ensure the Electric Switch is communicating with the Genius Hub by removing the front cover from the Electric Switch and pressing the button underneath the cover.


Step 6

Now the temperature from the Probe can be checked.

The Doctor will check that the device is configured correctly