First thing to try is cover up the front of the unit with a piece of cardboard so that it cannot receive Infra red.
All sorts of kit can generate infra red including faulty low energy bulbs, even TV’s when you switch them on. I used to have a infra red repeater with a red led indicating a infra red source. It turned on every time I booted my Panasonic TV.
Have you recently fitted any new low energy lighting in the same room. Do the problems arise when these are on.