Hello, I recently purchased the above model and having a lot of trouble getting it to start. It blows out cold air one minute, will not come on in the warm mode, than just when I give up and lay the remote down it can decide to switch on , I have it now set at 27 degrees and it is not that temperature, that is not the reason why it would not come on, I am very disappointed!! Surely an a.c. Should not be this difficult to work out!!?