Really don't know this model but some thoughts occured to me..
1) Maybe the programme timer menu full, needs clearing?!
2) Maybe it's due to a faulty erase prevention switch?!
3) Another long shot..(has it been in a storage or a cold place?), maybe it's a dew/condensation warning?!
Then again... i'm just making educated guesses ;)
It could even be part of the units fault self-diagnostics.
Cobweb, October 2005