Bissel Proheat carpet cleaner keeps over-heating?

I have a Bissel Proheat cleaner, Model 25A3. It's maybe 2 years old. I have a super light carpet, and have used it approximately every 2 months or so. The last time I tried to clean my carpet, it was making a strange noise, started slowing down and then stopped completely. It smells like it's over-heating. Is there any way it can be fixed at home?