Electrical appliances don't trip fuses for no reason. They do it because the electricity is shorting out some where on the appliance. You can't fix something like this by pressing a button or cleaning the filters. You need test equipment & the knowledge how to fault find until you locate the problem. It could be anywhere, heater, motor, wiring etc. Suggest you call someone to come out and fix it. Continuing to use it can cause a danger to yourself and possibly more serious damage to the appliance as it may short one time and blow the main control board before the fuse shuts off the power.
Lincoln Appliance NZ, December 2012