The issue could be caused due to 

- Unstable power supply

- Hardware fault

Both the Window Unit and Coverage Unit have identical power supplies.

Try switching the power supplies to see if one of the following issues could be occurring:

1. If you switch the power supplies and the problem moves from one unit to the other unit, then you are experiencing a power supply issue.
Please let us know and we'll get a new power supply organised.

2. If, after switching power supplies, you still having the same issue on your Unit try another outlet or lamp/appliance in the same outlet.
If you continue to have problems with the Unit please let us know.

3. If, after switching power supplies both systems are functioning properly then your Cel-Fi RS2 / Cel-Fi Pro system simply needed a restart.
This is not something that should continue, but if it occurs frequently please let us know as well.