I never thought I'd post on here about something as boring as a fabric conditioner problem!
I have a commercial washing machine (not sure if that is relevant) and when I use fabric conditioner in the drawer of the machine it clogs up after every load.
I keep the drawer clean and remove it and rinse it out after every load, well I have to now. Surely I shouldn't need to do this.
I use powder in the middle section of the drawer and fabric conditioner in the right hand section. Left bit is for prewash and I don't use that. I've tried reducing the amount of powder I use, in case it was swishing over into the conditioner section therefore causing a block, but it doesn't seem to be that.
In most machines the fabric conditioner goes in the middle and the powder on the left - are you sure you're using yours correctly? What make/model do you have? The fabric conditioner compartment usually has a little flower on it.