My rooms stat does not seem to talk to my reciever and the only way I can get the heating to work is to press the override button on the reciever. The recieve alarm light is also perminantely lit. I have changed the batteries in the room stat but it makes no difference. Somebody said I have to reset the recieve????? How do I do that. HELP!!!!!!!!!! I run a BnB and the guests want the heating on.