We have a Coachman Pastiche 535/4 2008 model. Love the van, it has been in our possesion for 18months now and the problems are starting to appear.Nothing really major except for the ceiling fan not working. Fuses checked, wiring checked. Checked power to motor via independent means, no joy. So it looks like we need to get a new motor but from where? Any suggestions would be apprieciated.