Underfloor Heating controller beeping all night

[Flybytheseat]

My underfloor heating system controller is beeping and keeping me awake at night. I do not know the manufacturer (doesn't seem to be marked on it) but the apartment manual states it's a COSY unit. I cant find a manual either in the apartment or online. The unit displays error code trF u206. The apartment complex was built in 2006. An LED marked Kit/LR (presumably kitchen / Living room) is lit up too. Any ideas what it could be ? Maybe a battery issue with the wireless thermostat in the Kitchen / Living Room though the display on the thermostat looks fine ?

 

[Sue Ellen]

Do you have the unit serviced regularly and possibly contact that company? Perhaps contacting someone in the Management Company who might be able to give you some advice.