In order to establish your Dual Channel Receiver is faulty please follow the steps below:

Step 1. Checking if the Dual Channel Receiver is switching OFF.

• Turn OFF from the app the heating and the Hot Water. 
• Wait 2 minutes
• Walk to the Dual Channel Receiver
• Open the door of the DCR and check the label on the door to what are the 2 white buttons controlling.
• Press and Hold the top button (normally the heating). The light should turn red because the heating has been switched off from the app.
• Press and Hold the bottom button (normally the hot water) The light should turn red because the hot water has been switched off from the app.
• Go to the Device list on the app and check if the traffic lights on the Dual Channel Receiver is red.
  

Step 2. Checking if the Dual Channel Receiver is switching ON

• Turn ON from the app the heating and the hot water
• Wait 2 minutes
• Walk to the Dual Channel Receiver
• Press and Hold the top button (normally the heating) the light should turn green because now you switched on the heating. 
• Press and Hold the top button (normally the hot water) the light should turn green because now you switched on the hot water. 
• Go to the Device list on the app and check if the traffic lights on the Dual Channel Receiver is green.

Step 3. Check the wiring 

• The interface between the Genius system and the boiler is a relay, which is only on / off for each of hot water / central heating. This would not directly cause the boiler to go into a fault mode. The steps above proved that the Dual Channel Receiver is not faulty and is doing what it told to switch off and on the boiler. Sometimes because the DCR is not wired properly there is a loose wire. You will know this is the case if the light turns off. The normal status of the DCR is the amber light which blinks every 2 minutes because is communicating with the system not because is disconnected! In a case of loose wire, we suggest to check the wiring or to seek advice from an Electrician.
  
  

Here is a video to help you to check the state of the Genius system.