Page 1 of Philips DVDR Model 1000

I have had nothing but trouble with my DVD recorder. After 2 months it stopped playing DVD`s. It went back to Philips and 8 weeks later I got it back! Now, when I set the timer instead of recording a programme it actually erases the whole disc (DVD+RW). However, when I simply press record I have no problem. I don`t want to send it back to Philips or I may never see it again. Anyone know what the problem might be and how to fix it? Has anyone else had problems with the Philips recorders?
Many thanks
Jim K